Nano-structured optical fibers made of glass-ceramics, and phase separated and metallic particle-containing glasses

For years, scientists have been looking for different techniques to make glasses perfect: fully amorphous and ideally homogeneous. Meanwhile, recent advances in the development of particle-containing glasses (PCG), defined in this paper as glass-ceramics, glasses doped with metallic nanoparticles, and phase-separated glasses show that these "imperfect" glasses can result in better optical materials if particles of desired chemistry, size, and shape are present in the glass. It has been shown that PCGs can be used for the fabrication of nanostructured fibers-a novel class of media for fiber optics. These unique optical fibers are able to outperform their traditional glass counterparts in terms of available emission spectral range, quantum effciency, non-linear properties, fabricated sensors sensitivity, and other parameters. Being rather special, nanostructured fibers require new, unconventional solutions on the materials used, fabrication, and characterization techniques, limiting the use of these novel materials. This work overviews practical aspects and progress in the fabrication and characterization methods of the particle-containing glasses with particular attention to nanostructured fibers made of these materials. A review of the recent achievements shows that current technologies allow producing high-optical quality PCG-fibers of different types, and the unique optical properties of these nanostructured fibers make them prospective for applications in lasers, optical communications, medicine, lighting, and other areas of science and industry.

General information

Publication status: Published
MoE publication type: A2 Review article in a scientific journal
Organisations: Physics, Research group: Photonics Glasses, Université Côte d'Azur, Ecole Centrale de Nantes, PSL Research University
Contributors: Veber, A., Lu, Z., Vermillac, M., Pigeonneau, F., Blanc, W., Petit, L.
Number of pages: 29
Publication date: 2019
Peer-reviewed: Yes

Publication information

Journal: Fibers
Volume: 7
Issue number: 12
ISSN (Print): 2079-6439
Original language: English
ASJC Scopus subject areas: Ceramics and Composites, Civil and Structural Engineering, Biomaterials, Mechanics of Materials
Keywords: Fabrication, Glass, Glass-ceramics, Metallic nanoparticles, Optical fibers, Optical properties, Phase-separation
Electronic versions: 
Source: Scopus
Source ID: 85076893292

Research output: Contribution to journalReview ArticleScientificpeer-review

Principles of designing for situation awareness

High level of situation awareness is a key factor in many domains to ensure correct decision making and actions. Situation awareness has been studied extensively in the aviation and military domains but the research also applies to other domains e.g. power grid operations and managing disturbances of electricity supply. Based on the research design principles have been created in order to help system designers to create better user interfaces for systems used in operational activities. These principles have been applied when designing the situation awareness system concept for managing disturbances of electricity supply.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Electrical Engineering, Research area: Power engineering
Contributors: Haapanen, J.
Pages: 29-46
Publication date: 2015

Publication information

Place of publication: Tampere
Publisher: Maanpuolustuskorkeakoulu Sotatekniikan laitos
ISBN (Print): 978-951-25-2720-5
ISBN (Electronic): 978-951-25-2721-2

Publication series

Name: Situational awareness for critical infrastructure protection
Volume: 3
No.: 1

Research output: Working paperProfessional

Abstracting Application Development for Resource Constrained Wireless Sensor Networks

Ubiquitous computing is a concept whereby computing is distributed across smart objects surrounding users, creating ambient intelligence. Ubiquitous applications use technologies such as the Internet, sensors, actuators, embedded computers, wireless communication, and new user interfaces. The Internet-of-Things (IoT) is one of the key concepts in the realization of ubiquitous computing, whereby smart objects communicate with each other and the Internet. Further, Wireless Sensor Networks (WSNs) are a sub-group of IoT technologies that consist of geographically distributed devices or nodes, capable of sensing and actuating the environment.

WSNs typically contain tens to thousands of nodes that organize and operate autonomously to perform application-dependent sensing and sensor data processing tasks. The projected applications require nodes to be small in physical size and low-cost, and have a long lifetime with limited energy resources, while performing complex computing and communications tasks. As a result, WSNs are complex distributed systems that are constrained by communications, computing and energy resources. WSN functionality is dynamic according to the environment and application requirements. Dynamic multitasking, task distribution, task injection, and software updates are required in field experiments for possibly thousands of nodes functioning in harsh environments.

The development of WSN application software requires the abstraction of computing, communication, data access, and heterogeneous sensor data sources to reduce the complexities. Abstractions enable the faster development of new applications with a better reuse of existing software, as applications are composed of high-level tasks that use the services provided by the devices to execute the application logic.

The main research question of this thesis is: What abstractions are needed for application development for resource constrained WSNs? This thesis models WSN abstractions with three levels that build on top of each other: 1) node abstraction, 2) network abstraction, and 3) infrastructure abstraction. The node abstraction hides the details in the use of the sensing, communication, and processing hardware. The network abstraction specifies methods of discovering and accessing services, and distributing processing in the network. The infrastructure abstraction unifies different sensing technologies and infrastructure computing platforms.

As a contribution, this thesis presents the abstraction model with a review of each abstraction level. Several designs for each of the levels are tested and verified with proofs of concept and analyses of field experiments. The resulting designs consist of an operating system kernel, a software update method, a data unification interface, and all abstraction levels combining abstraction called an embedded cloud.

The presented operating system kernel has a scalable overhead and provides a programming approach similar to a desktop computer operating system with threads and processes. An over-the-air update method combines low overhead and robust software updating with application task dissemination. The data unification interface homogenizes the access to the data of heterogeneous sensor networks. A unification model is used for various use cases by mapping everything as measurements. The embedded cloud allows resource constrained WSNs to share services and data, and expand resources with other technologies. The embedded cloud allows the distributed processing of applications according to the available services. The applications are implemented as processes using a hardware independent description language that can be executed on resource constrained WSNs. The lessons of practical field experimenting are analyzed to study the importance of the abstractions. Software complexities encountered in the field experiments highlight the need for suitable abstractions.

The results of this thesis are tested using proof of concept implementations on real WSN hardware which is constrained by computing power in the order of a few MIPS, memory sizes of a few kilobytes, and small sized batteries. The results will remain usable in the future, as the vast amount, tight integration, and low-cost of future IoT devices require the combination of complex computation with resource constrained platforms.

General information

Publication status: Published
MoE publication type: G5 Doctoral dissertation (article)
Organisations: Department of Pervasive Computing, Research area: Computer engineering
Contributors: Laukkarinen, T.
Number of pages: 104
Publication date: 4 Sep 2015

Publication information

Place of publication: Tampere
Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3542-0
ISBN (Electronic): 978-952-15-3567-3
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1306
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 16.12.2015

Research output: Book/ReportDoctoral thesisCollection of Articles

Boundary Integral Operators in Linear and Second-order Nonlinear Nano-optics

Recent advances in the fabrication of nanoscale structures have enabled the production of almost arbitrarily shaped nanoparticles and so-called optical metamaterials. Such materials can be designed to have optical properties not found in nature, such as negative index of refraction. Noble metal nanostructures can enhance the local electric field, which is beneficial for nonlinear optical effects. The study of nonlinear optical properties of nanostructures and metamaterials is becoming increasingly important due to their possible uses in nanoscale optical switches, frequency converters and many other devices.

The responses of nanostructures depend heavily on their geometry, which calls for versatile modeling methods. In this work, we develop a boundary element method for the modeling of surface second-harmonic generation from isolated nanoparticles of very general shape. The method is also capable of modeling spatially periodic structures by the use of appropriate Green’s function. We further show how to utilize geometrical symmetries to lower the computational time and memory requirements in the boundary element method even in cases where the incident field is not symmetrical.

We validate the boundary element approach by the calculation of second-harmonic scattering from gold spheres of different radii. Comparison to analytical solution reveals that under one percent relative error is easily achieved. The method is then applied to model second-harmonic microscopy of single gold nanodots and second-harmonic generation from arrays of L- and T-shaped gold particles. The agreement between the calculations and measurements is shown to be excellent.

To provide a more intuitive understanding of the optical response of nanostructures, we develop a full-wave spectral approach, which is based on boundary integral operators. We present a theory which proves that the resonances of a smooth scatterer are isolated poles that occur at complex frequencies. Other types of singularities, such as branch-cuts, may occur only via the fundamental Green function or material dispersion. We propose a definition of an eigenvalue problem at fixed real frequencies which gives rise to modes defined over the surface of the scatterer. We illustrate that these modes accurately describe the optical responses that are usually seen for certain particle shapes when using plane-wave excitations. With the spectral approach, the resonance frequencies and the modal responses of a scatterer can be found as intrinsic properties independent of any incident field. We show that the spectral theory is compatible with the Mie theory for pherical particles and with a previously studied quasi-static theory in the limit of zero frequency.

General information

Publication status: Published
MoE publication type: G5 Doctoral dissertation (article)
Organisations: Department of Physics, Research area: Optics
Contributors: Mäkitalo, J.
Number of pages: 73
Publication date: 29 May 2015

Publication information

Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3522-2
ISBN (Electronic): 978-952-15-3539-0
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1297
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 16.12.2015

Research output: Book/ReportDoctoral thesisCollection of Articles

Comparison of Sintering Methods and Conductive Adhesives for Interconnections in Inkjet-Printed Flexible Electronics

Increasing demands for flexibility and stretchability for electronic devices are driving the research for novel fabrication technologies. Inkjet-printing is one of these novel electronics fabrication techniques studied and developed globally in recent years and it has some interesting benefits over traditional lithography-based techniques, mainly its additive and digital nature. Traditional manufacturing methods are mature techniques and the processes are well defined and optimized for large scale manufacturing and inkjet-printing is not going to replace the lithography as such for large scale manufacturing. Inkjet-printing does, however, enable whole new ways of electronics fabrication, such as high part-to-part customization and 3D processability, which have previously been either very challenging or even impossible.

So far research has focused mainly on inkjet-printing itself and the jetting process is understood fairly well. However, at the moment printed semiconductor materials are far inferior to traditional semiconductor components and can not enable the same level of functionality or connectivity. Hybrid systems, combining the high performance of traditional semiconductor components and benefits of inkjet-printing, are studied as a solution for fabricating high performance devices with novel fabrication techniques. Hybrid systems require the ability to attach external components to the printed structures and this integration was chosen as one of the main topic for this thesis work as it had not been studied previously and the knowledge was required for developing inkjet-printing.

This thesis analyzes inkjet-printed hybrid systems and focuses on system level integration. The work is done on interconnections including both the sintering of metallic nanoparticles as well as external component interconnections and circuit board to circuit board connections. Sintering research is focused on alternative sintering methods to traditional thermal sintering and evaluation of their usability in electronics fabrication. Electrically conductive adhesives are studied as the main method of forming external connection to components and to other circuit boards.

In the research related to this thesis alternative sintering methods were found to be suitable replacements for traditional thermal sintering with the advantages and disadvantages varying between different technologies. Laser and intense pulsed lighting were generally found to be the most promising techniques for inkjet-printed structures. External connections to traditional surface mounted components as well as other printed circuit boards were also successfully demonstrated in the related publications using electrically conductive adhesive materials. Both the electrical performance and long term reliability of the conductive adhesives were found to be inferior to solder-based interconnections but observations show that the difference is caused by the adhesive material itself, not by the use of inkjet-printing. Thus adhesives can be considered as a viable method for forming external interconnections on inkjet-printed structures.

General information

Publication status: Published
MoE publication type: G5 Doctoral dissertation (article)
Organisations: Department of Electronics and Communications Engineering, Research group: Laboratory for Future Electronics
Contributors: Niittynen, J.
Number of pages: 62
Publication date: 24 Apr 2015

Publication information

Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3505-5
ISBN (Electronic): 978-952-15-3515-4
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1291
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 16.12.2015

Research output: Book/ReportDoctoral thesisCollection of Articles

Detection and Assessment of Sleep-Disordered Breathing with Special Interest of Prolonged Partial Obstruction

Sleep-disordered breathing (SDB) has become more common and puts more strain on public health services than ever before. Obstructive sleep apnea (OSA) and its health consequences such as different cardiovascular diseases are nowadays well recognized. In addition to OSA, attention has recently been paid to another SDB; prolonged partial obstruction. However, it is often undiagnosed and easily left untreated because of the low number of respiratory events during polysomnography recording. This patient group has found to present with more atypical subjective symptoms than OSA patients.

Polysomnography (PSG) is considered to be the gold standard in reference methods in SDB diagnostics. PSG is a demanding and laborious multichannel recording method and often requires subjects to spend one night in a sleep laboratory. There is long tradition in Finland to use mattress sensors in SDB diagnostics. Recently, smaller electromechanical film transducer (Emfit) mattresses have replaced the old Static Charge-Sensitive Bed (SCSB) mattresses. However, a proper clinical validation of Emfit mattresses in SDB diagnostics has not been carried out.

In this work, the use of Emfit recording in the detection of sleep apneas, hypopneas, and prolonged partial obstruction with increased respiratory effort was evaluated. The general aim of the thesis is to develop and improve the diagnostic methods for sleep-related breathing disorders.

Comparisons with both PSG with nasal pressure recording and transesophageal pressure were made. Special attention was paid to the existence of the spiking phenomenon in the Emfit mattress in relation to changes in negative intrathoracic pressure in estimating increased respiratory effort. This entails monitoring the esophageal pressure as a part of nocturnal polysomnography. The recording method is demanding and uncomfortable and is usually not used with ordinary sleep laboratory patients. Thus, reliable and easy indirect quantification methods for respiratory effort are needed in clinical work. According to the results presented in this work, the Emfit signal reveals increased respiratory effort as well as apneas/hypopneas.

To find out the prevalence and consequences of prolonged partial obstruction among sleep laboratory patients was another aim of this thesis. This was done by retrospective analyses of sleep laboratory patients from one year. The prevalence of patients with prolonged partial obstruction was 11%. They were as sleepy as OSA patients, but their life quality was worse, as assessed by a survey. These results, along with the findings of the heart rate variation evaluation carried out in this thesis, suggest that prolonged partial obstruction and OSA should be considered as different entities of SDB.

With the Emfit mattress sensor, the SDB types can be differentiated, which is expected to enhance the accuracy of diagnostics. However, there is increasing need for easy and cheap screening methods to evaluate nocturnal breathing. In this respect, the usability of compressed tracheal sound signal scoring in SDB screening was estimated. The method reveals apneas and hypopneas but, according to the present findings, it can also be used in the detection of prolonged partial obstruction. The findings encourage the use of compressed tracheal sound analysis in screening different SDB.

The analysis of sleep recordings is still based on a doctor’s subjective and visual estimation. To date, no generally accepted and sufficiently reliable automatic analysis method exists. Robust, automatic quantification methods with easier techniques for non-invasive sleep recording would enable the analysis methods to be also used for screening purposes. In this technology-orientated world, people could take much more responsibility and take care of themselves better by following their own biosignals and by changing their health habits earlier. The need for good sleep as a necessity for good life and health is widely recognized.

General information

Publication status: Published
MoE publication type: G5 Doctoral dissertation (article)
Organisations: Department of Electronics and Communications Engineering
Contributors: Tenhunen, M.
Number of pages: 77
Publication date: 4 Sep 2015

Publication information

Place of publication: Tampere
Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3531-4
ISBN (Electronic): 978-952-15-3556-7
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1304
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 16.12.2015

Research output: Book/ReportDoctoral thesisCollection of Articles

Model-Driven Development of Control Applications: On Modeling Tools, Simulations and Safety

Control systems are required in various industrial applications varying from individual machines to manufacturing plants and enterprises. Software applications have an important role as an implementation technology in such systems, which can be based on Distributed Control System (DCS) or Programmable Control System (PLC) platforms, for example. Control applications are computer programs that, with control system hardware, perform control tasks. Control applications are efficient and flexible by nature; however, their development is a complex task that requires the collaboration of experts and information from various domains of expertise.

This thesis studies the use of Model-Driven Development (MDD) techniques in control application development. MDD is a software development methodology in which models are used as primary engineering artefacts and processed with both manual work and automated model transformations. The objective of the thesis is to explore whether or not control application development can benefit from MDD and selected technologies enabled by it. The research methodology followed in the thesis is the constructive approach of design science.

To answer the research questions, tools are developed for modeling and developing control applications using UML Automation Profile (UML AP) in a model-driven development process. The modeling approach is developed based on open source tools on Eclipse platform. In the approach, modeling concepts are kept extendable. Models can be processed with model transformation techniques that plug in to the tool. The approach takes into account domain requirements related to, for example, re-use of design. According to assessment of industrial applicability of the approach and tools as part of it, they could be used for developing industrial DCS based control applications.

Simulation approaches that can be used in conjunction to model-driven development of control applications are presented and compared. Development of a model-in-the-loop simulation support is rationalized to enable the use of simulations early while taking into account the special characteristics of the domain. A simulator integration is developed that transforms UML AP control application models to Modelica Modeling Language (ModelicaML) models, thus enabling closed-loop simulations with ModelicaML models of plants to be controlled. The simulation approach is applied successfully in simulations of machinery applications and process industry processes.

Model-driven development of safety applications, which are parts of safety systems, would require taking into account safety standard requirements related to modeling techniques and documentation, for example. Related to this aspect, the thesis focuses on extending the information content of models with aspects that are required for safety applications. The modeling of hazards and their associated risks is supported with fault tree notation. The risk and hazard information is integrated into the development process in order to improve traceability. Automated functions enable generating documentation and performing consistency checks related to the use of standard solutions, for example. When applicable, techniques and notations, such as logic diagrams, have been chosen so that they are intuitive to developers but also comply with recommendations of safety standards.

General information

Publication status: Published
MoE publication type: G5 Doctoral dissertation (article)
Organisations: Department of Automation Science and Engineering, Research area: Information Systems in Automation
Contributors: Vepsäläinen, T.
Number of pages: 115
Publication date: 5 Jun 2015

Publication information

Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3528-4
ISBN (Electronic): 978-952-15-3536-9
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1303
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 16.12.2015

Research output: Book/ReportDoctoral thesisCollection of Articles

On the Socio-Technical Dependencies in Free/Libre/Open Source Software Projects

During the course of the past two decades, Open Source Software (OSS) development model has lead to a number of projects which have produced software that rivals and in some cases even exceeds the scale and quality of the traditional software projects. Among others, Eclipse, Apache, Linux, and BSD operating system are representative examples of such success stories.

However, OSS project like traditional in-house projects, often pose the potential for enormous problems, whose effects run the gamut from immense cumulative delay through complete breakdown and failure. This situation is evident, as OSS development is a socio-technical endeavor and is non-trivial. Such development occurs within an intensively collaborative process, in which technical prowess must go hand in hand with the efficient coordination and management of a large number of social, inter-personal interactions across the development organization. Furthermore, those social and technical dimensions are not orthogonal. It has been recognized that the structure of a software product and the layout of the development organization working on that product correlate.

Therefore this thesis argue that a comprehensive understanding on the sustainable evolution of OSS projects can be gained through the examination of the mutual influence of social and technical dimensions in OSS development. Thus, the goal of this thesis is the verification and reasoning of the following proposition,

“The evolution of the Open Source Software (OSS) project is constrained by the non-orthogonal evolution of Social and Technical dimensions (often termed as Socio-Technical dependency) of such projects”.

In concrete terms, this thesis investigates and measures empirically the extent to which the two dimensions of OSS projects, social and technical, approximate and influence each other during the evolution of the projects. Perceived insight is then used to build proposals that would provide empirical basis to frame theory around the affirmed proposition.

Moving towards this goal, this thesis proposes models, methods, frameworks and tool supports to measure, assess, and reason the socio-technical dependency within OSS project context. The starting point is to propose a data model to mimic the social and technical dimensions and their inter-relationships. This model is instantiated through the repository data of OSS projects that represent each of these dimensions. Then, methods and a mathematical model are proposed to derive dependency between the two dimensions, and to utilize them in measuring socio-technical dependency quantitatively. These proposals are then put into practice within distinct OSS project contexts to empirically measure and investigate socio-technical dependency. Along the process, frameworks, architectural design and corresponding tool implementations are provided to automate the analysis and visualization of such dependency.

Reported results suggest that high degree of socio-technical congruence can be considered as the implicit underlying principle for building team collaboration and coordination within the developer community of long lived OSS projects. Even being highly distributed community of developers, and mostly using passive communication channels, OSS communities are tied together by maintaining task dependent communication. Such communication is often ad-hoc, adaptive and situated as it cope with rapid and continuous changes in the underlying software.

Additionally, collaboration among projects are significantly influenced by the resembling properties among the projects. Resembling properties (e.g., project domain, size, and programming language) often form a favorable ground, thus creating a stimuli for developers to participate in those projects.

General information

Publication status: Published
MoE publication type: G5 Doctoral dissertation (article)
Organisations: Department of Pervasive Computing, Research area: Software engineering
Contributors: Syeed, M. M. M.
Publication date: 29 May 2015

Publication information

Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3525-3
ISBN (Electronic): 978-952-15-3533-8
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1300
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 16.12.2015

Research output: Book/ReportDoctoral thesisCollection of Articles

Organic Chromophores in Self-Assembled Monolayers and Supramolecular Arrays

Large aromatic chromophores, e.g. phthalocyanines or perylene derivatives are widely used in modern photonic applications. For these systems, well-organized films of the chromophores are very important. One of the ways to ensure the order on molecular level is to bind the organic dyes covalently to a solid substrate with a suitable anchor group. Expanding the concept, multilayered supramolecular assemblies can be built on surfaces as well.

In the present Thesis various chromophores with a capability to anchor onto a solid surface were prepared. Synthesized molecules were porphyrins, phthalocyanines, and perylene mono- and diimides with different substituents. The anchor-surface pairs were of several types, and the chromophores were attached to a surface by one- or two-step methods.

Two of the perylene monoimide derivatives were found to be a perfect basement for construction of multilayered films. Using a metal-ligand interaction it was possible to prepare stable double layers, as well ten molecules thick stable deeply colored multilayer films. The developed approach is versatile and will allow in future to expand the capabilities of molecular film architecture.

General information

Publication status: Published
MoE publication type: G5 Doctoral dissertation (article)
Organisations: Department of Chemistry and Bioengineering, Research group: Supramolecular photochemistry
Contributors: Sariola-Leikas, E.
Number of pages: 58
Publication date: 20 Nov 2015

Publication information

Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3600-7
ISBN (Electronic): 978-952-15-3623-6
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1334
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 16.12.2015

Research output: Book/ReportDoctoral thesisCollection of Articles

Protective Spinel Coatings for Solid Oxide Fuel Cell Interconnectors by Thermal Spray Processes: From Conventional Dry Powder to Novel Solution Precursor Thermal Spraying

Protective coatings are used on ferritic stainless steel interconnectors to prevent the transport of the harmful CrO3(g) and CrO2(OH)2(g) compounds in solid oxide fuel cells. These compounds are transported on the triple-phase boundary of the cathode, and electrically reduce back to Cr2O3 causing degradation of the cell. The most promising materials to be used as protective coatings are (Mn,Co)3O4 spinels. However, in order to provide good protectiveness in long-term use (5 years or more), these coatings should have a dense microstructure, good adhesion with the substrate and good chemical stability at high temperature in an oxidizing atmosphere. Several deposition techniques have been studied, for example various wet-ceramic processes and thin film techniques. However, the studies have shown that the coatings produced with these methods are not dense, and therefore their long-term protectiveness is questionable.

In this study, protective (Mn,Co)3O4 and (Mn,Co,Fe)3O4 spinel coatings were manufactured with conventional atmospheric plasma spraying (APS) and novel high velocity solution precursor flame spraying (HVSPFS). The aim was to obtain a dense microstructure. Since the HVSPFS process is a novel deposition method, the coating build-up mechanism and materials synthesis were studied more closely. The as-sprayed coatings were oxidized in order to obtain more detailed information about the Cr barrier and electrical properties during the oxidation cycles.

The spinel coatings with a dense microstructure were sprayed using the APS and the HVSPFS processes. The deposition methods caused the as-sprayed coatings to sinter during the oxidation cycles. The sintering was a consequence of the metastable phase structure and the small particle and crystallite size. Due to the dense microstructure and fully recovered spinel phases, the coatings provided a good Cr barrier and electrical properties, even in a relatively harsh environment. It can be stated that Mn1.5Co1.5O4 and MnCo1.9Fe0.1O4 spinel coatings, manufactured either by conventional thermal spraying using agglomerated cermet powder, or by solution precursor thermal spraying, are good candidates for use as protective coatings on metallic interconnectors.

General information

Publication status: Published
MoE publication type: G5 Doctoral dissertation (article)
Organisations: Department of Materials Science, Research group: Surface Engineering
Contributors: Puranen, J.
Number of pages: 81
Publication date: 18 Sep 2015

Publication information

Place of publication: Tampere
Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3569-7
ISBN (Electronic): 978-952-15-3587-1
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1322
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 16.12.2015

Research output: Book/ReportDoctoral thesisCollection of Articles

Social Media in Business-to-Business Companies' Innovation

Regarding the increasingly important paradigm of open innovation, it is recognized that valuable innovation-related knowledge is distributed ever more widely to various actors outside the company borders, such as users, customers, and communities. Various types of novel collaborative web tools and approaches, such as social media, can enable and significantly increase the use of distributed knowledge both within and outside company borders.

It is a common assumption that it is much more difficult to utilize social media in business-to-business (B2B) innovation and the customer interface because of the significant differences in B2B markets, B2B products, and product development, for example. Despite the growing number of company experiments and academic studies, social media are still new to many businesses. The opportunities and benefits of social media are not well understood in business, especially in B2B context. Despite the recent increasing interest in the use of social media in B2B marketing, it has received little attention from the innovation perspective.

The general purpose of this thesis is to study and help to understand the use of social media in B2B companies’ innovation. The thesis focuses on the innovation process, customer interface and the related perspective of the creation and sharing of customer knowledge. The main objectives of the dissertation are to understand the challenges, new opportunities, use and benefits, as well as, functions and roles of social media in B2B innovation. The choice of carrying out the dissertation as an article thesis has offered the researcher the opportunity to study from multiple perspectives a phenomenon that has been little researched or understood. The thesis combines quantitative and qualitative research. Quantitative research approach was used to determine the current use and perceived potential of social media tools in innovation, as well as to identify challenges of social media use in B2B company innovation. Qualitative research was used to gain a deep understanding of the challenges and benefits, and roles and functions of social media in B2B innovation.

The thesis contributes to the increasing understanding on the rather little understood topic of social media and its potential in B2B companies’ innovation. Based on the research, new understanding was gained on the challenges that B2B companies face in using social media in innovation, on the new possibilities and benefits that social media provide for innovation, as well as on the applications and the roles of social media in B2B innovation.

In addition, models and theories were developed for enhancing social media use: based on the qualitative research, for example, a Social Customer Learning model was built, which aims to help researchers and managers to identify and evaluate different social media approaches in business-to-business customer interface and innovation; modifications and improvements were proposed for media richness theory and channel expansion theory for the better consideration of the social media and the innovation contexts.

General information

Publication status: Published
MoE publication type: G5 Doctoral dissertation (article)
Organisations: Department of Information Management and Logistics, Research group: Novi, Managing digital industrial transformation (mDIT)
Contributors: Jussila, J.
Number of pages: 70
Publication date: 6 Nov 2015

Publication information

Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3599-4
ISBN (Electronic): 978-952-15-3621-2
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1333
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 14.12.2015

Research output: Book/ReportDoctoral thesisCollection of Articles

Studies of Physical Phase State of Aerosol Nanoparticles

Aerosol particles produced in the atmosphere have major effects on the life on Earth: cloud formation starts on seed particles, often formed by photochemical oxidation of biogenic volatile organic compounds; visibility, corrosion, and health problems are caused by anthropogenic hydrocarbon and sulfur emission processed into particles by the atmosphere and the sun.

Naturally occurring secondary organic aerosol (SOA) particles can produce up to a half of the non-refractory mass of aerosol particles of less than micrometer in size. This makes SOA a large contributing factor to the climate system of the Earth. The actual effect that these particles have is, however, not well known, compared to the other effects affecting the climate. The research effort to increase the understanding and reduce the uncertainties around the climate effects of SOA encompasses an interdisciplinary research community.

The recent advance made by the observation of a solid phase of SOA by Virtanen et al. (2010) was the starting point for this thesis. The solid phase of SOA particles means that a long-held assumption of a partition equilibrium between the condensed phase and the gas phase of the semivolatile species may be wrong and produce too low a timescale for the particle chemical reaction rates and uptake coefficients.

This work consists of new developments in the instrumentation of particle properties as well as new observations of laboratory-generated secondary organic aerosol. The method development has two branches, one concentrates on finding more information from the measurement signal of an electrical low pressure impactor (ELPI) used in a somewhat unconventional way, whereas the other consists of a new detection method for particle bounce and response to different humidity and phase hysteresis induced by a carefully controlled humidity history.

The methods and observations made during this work are by no means the final word on the subject, but they are being used and further developed by the scientific community. Study of the particle phase and bounce as well as SOA mechanical properties and kinetics is well underway, and its results will be used to further refine the understanding of both aerosol fundamentals as well as the climate system.

General information

Publication status: Published
MoE publication type: G5 Doctoral dissertation (article)
Organisations: Department of Physics, Research area: Aerosol Physics
Contributors: Saukko, E.
Number of pages: 51
Publication date: 26 Jun 2015

Publication information

Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3544-4
ISBN (Electronic): 978-952-15-3608-3
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1308
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 16.12.2015

Research output: Book/ReportDoctoral thesisCollection of Articles

Brownfield Process: A Method for the Rationalisation of Existing Product Variety towards a Modular Product Family

The purpose of the research is to define what kind of design information is needed when existing non-modular product elements are designed towards a modular product family that enables product configuration — and what kinds of steps facilitate this kind of design. Thus this thesis poses two research questions: RQ1. How to structure the design information needed in the designing of modular product families? RQ2. How to create the design information needed in the rationalisation of existing product variety towards a modular product family? The research approach includes application of Design Research Methodology (DRM) as originated by Blessing & Chakrabarti (2009). This research includes four main stages (Research Clarification, Descriptive Study I, Prescriptive Study and Descriptive Study II), all focusing on the defining of influencing factors and their impacts, as DRM suggests. This thesis considers that design reuse, product variety, standardisation, modularisation, product platforms, product families and product configuration are all main product structuring topics when an existing product assortment should be rationalised. Consideration of these topics makes up an effective tactic for the enabling of product variants to be provided for customers, without forgetting the benefits of design reuse and commonality in an industrial environment. The contribution of the research suggests that there are five key factors from a design information perspective that are essential in modular product family development aimed at product configuration. These elements are also the answer to RQ1: - Partitioning logic defines viewpoints that affect product structuring decisions from both a business and customer perspective. - A set of modules includes building blocks of product variants of a product family. - Interfaces (standardised) enable efficient defining of product variants in the order/sales-delivery process. - Architecture describes how modules and their interfaces are related to each other. Architecture also considers layout issues such as space reservations. - Configuration knowledge describes the relations between product family elements and customer needs that create a need for variety. Configuration knowledge can also present compatibilities of product elements or customer needs. The thesis also suggests a design process known as the Brownfield Process (the BfP), and includes ten steps in which design information related to the above key factors is defined. This is the suggested answer to RQ2. - Step 1: Target setting based on business environment - Step 2: Generic element model of the Module System - Step 3: Architecture: generic elements and interfaces - Step 4: Target setting based on customer environment - Step 5: Preliminary product family description - Step 6: Configuration knowledge: generic elements and customer needs - Step 7: Modular architecture: modules and interfaces - Step 8: Configuration knowledge: module variants and customer needs - Step 9: Product family documentation - Step 10: Business impact analysis The role of the BfP within the context of design research is discussed. From an academic viewpoint, there is a lack of these kinds of modularisation methods that aim at configurable products, although single aspects and key factors of the proposed method have been often discussed and their benefits and importance are emphasised separately in the literature. From an industrial viewpoint, the steps of the method can be applied in a real life environment based on the case studies. Thus contribution of the thesis can be considered worthwhile and an important addition in this research field.

General information

Publication status: Published
MoE publication type: G4 Doctoral dissertation (monograph)
Organisations: Department of Mechanical Engineering and Industrial Systems, Research area: Design, Development and LCM
Contributors: Pakkanen, J.
Number of pages: 283
Publication date: 29 May 2015

Publication information

Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3524-6
ISBN (Electronic): 978-952-15-3537-6
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1299
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 16.12.2015

Research output: Book/ReportDoctoral thesisMonograph

Environment Interpretation for Business Continuity in a Project Supplier’s Networks – Critical Factors in International Industrial Upgrades

Project suppliers operate in temporary networks of stakeholders with limited visibility outside of the project’s dyadic relationships. Environment interpretation can reveal opportunities but also fatal risks in complex networks. Therefore, a wider view is needed for the project supplier to develop their business continuity in networks.

Environment interpretation and business continuity of project suppliers have been given limited attention in project business and industrial networks literature, especially from business opportunity and risk recognition perspectives. This research pursues an increased understanding and introduces the concept and process of network picture alignment in a temporary project’s business as a possible tool for environment interpretation and a source of business continuity in networks. The goal is to construct a framework for a project supplier’s network picture alignment in a value system. A qualitative, constructivist research design was selected to study a real life problem, and to advance the scientific knowledge in management both in international project business and in industrial marketing in networks.

The market research collects and analyses data to comprehend the significance of a business environment change in the paper industry and its influence on the paper machinery business. Thereafter, as a special case, six similar paper machinery upgrade projects from Finland to Italy are empirically studied to perceive critical factors in temporary projects. The critical factors are deductively established for the development of network picture alignment framework. The developed framework on network picture alignment is evaluated with three industrial change cases as post mortem analysis.

The market research revealed that the competitive situation among three dominant paper machinery project suppliers changed significantly between 2008 and 2012. The Austrian Andritz suffered the most from the economic downturn but they were capable of interpreting the business environment and rapidly reached the two market dominators, the Finnish Metso and the German Voith. Andritz concentrated successfully on uncertain upgrade projects and managed to change the situation in competition.

The empirical contribution was the map of the critical factors and steps to construct the framework of market-driven network picture alignment. The theoretical contribution is that a project supplier needs to critically interpret the environment and broaden their temporary projects’ and project business boundaries outside of the focal project networks for business opportunity recognition and risk reveal. Moreover, a supplier or other focal stakeholder in the value system is suggested to align its situated network picture to other stakeholders’ network pictures in dyadic, triadic and extended networked collaboration and relationships for continuous cooperation, with the constructed market-driven network picture alignment framework. In addition, network pictures are conceptually suggested to become flexible and dynamic, with market-driven mindsets and consecutive successful network picture alignments in the context specific value system.

The business opportunity identification for a machinery upgrade requires tight interactive technical collaboration in a customer’s production process. Continuous cooperation can be reached with harmonious relationships and repetitive network picture alignments between stakeholders. However, cultural distance matters in the reach of business objectives. A project supplier’s organization and persons have to follow a market-driven mindset in context specific network picture alignment. A market-driven mindset attached to collectivistic, and entrepreneurial activities advances the business performance. Thus, a supplier can create their own path for continuous business utilizing market-driven network picture alignment framework as the core of the strategic market management in networks.

Forthcoming research should study the question “why” salience is caused in global level environment interpretation in addition to “what” and “who” cause stakeholder salience. Moreover, network picture alignments should be studied in other social interaction processes, for example in business acquisition integrations. When the situated network picture version is the focus of this research, the representationalist and mentalist alignment versions would need further understanding. As the dissertation reveals network picture dynamization and consecutive network picture alignments as features of evolving project businesses, they are suggested as topics of future research.

General information

Publication status: Published
MoE publication type: G4 Doctoral dissertation (monograph)
Organisations: Department of Industrial Management
Contributors: Halinoja, M.
Number of pages: 237
Publication date: 4 Sep 2015

Publication information

Place of publication: Tampere
Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3557-4
ISBN (Electronic): 978-952-15-3566-6
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1313
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 14.12.2015

Research output: Book/ReportDoctoral thesisMonograph

Fractional Ornstein-Uhlenbeck Processes

In this monograph, we are mainly studying Gaussian processes, in particularly three different types of fractional Ornstein – Uhlenbeck processes. Pioneers in this field may bementioned, e.g. Kolmogorov (1903-1987) and Mandelbrot (1924-2010).The Ornstein – Uhlenbeck diffusion can be constructed from Brownian motion via a Doobtransformation and also from a solution of the Langevin stochastic differential equation. Both of these processes have the same finite dimensional distributions. However the solution of the Langevin stochastic differential equation, which driving process is fractionalBrownian motion and a Doob transformation of fractional Brownian motion do not havesame finite dimensional distributions. Indeed we verify, that the covariance of the fractionalOrnstein – Uhlenbeck process of the first kind (which we call the solution of the Langevin stochastic differential equation in which the driving process is fractional Brownian motion) behaves at infinity like a power function and the covariance of the fractional Ornstein –Uhlenbeck process (constructed by a Doob transformation of fractional Brownian motion) behaves at infinity like an exponential function. Moreover we study the behaviour of the covariances of these fractional Ornstein – Uhlenbeck processes. We also calculate the spectral density function for the Doob transformation of fractional Brownian motion using a Bochner theorem.We present the Doob transformation of fractional Brownian motion via solution of the Langevin stochastic differential equation. One of the main aims of our research is to analyse its driving process. This driving process is Y^((α))=e^(-tα) x_(τ_t ), where τ_t=(He^(αt/H))/α and {Z_t:t≥0 } is fractional Brownian motion. We find out that the process Y^((α)) := {Y_t^((α)): t ≥0}, if scaled properly, has the same finite dimensional distributions as the process Y^((1)) := {Y_t^((1)): t ≥0}. The main result in this monograph is that we define a stationary fractional Ornstein – Uhlenbeck process of the second kind as a process with a two-sided driving process {Y ̂_t^((1)): t∈R} and create a new family of fractional Ornstein-Uhlenbeck processes. We study many properties of the fractional Ornstein – Uhlenbeck process of the second kind. For example, we show that the fractional Ornstein – Uhlenbeck process of the second kind is Hölder continuous of any order β < H and find the kernel representation of its covariance.We research many properties of the processes Y^((α)) and Y^((1)) since they are quite interesting themselves. We represent these processes as stochastic integrals with respect to Brownian motion and prove that the sample paths of the process Y^((α)) are Hölder continuous of any order β < H. In the case H ∈(1/2,1), we find out the covariance kernel of increment process of Y^((α)), and using that we investicate the covariance of Y^((α)) and the variance of Y^((α)), when t tends to infinity. One of our main results is that the increment process of Y^((α)) is short-range dependent. We also study weak convergence and tightness and then finally prove that 1/√α Y_αt^((α)) converges weakly to scaled Brownian motion.In the case H ∈(1/2,1), fractional Brownian motion and the fractional Ornstein – Uhlenbeck process of the first kind both exhibit a long-range dependence, but the fractional Ornstein– Uhlenbeck process of the second kind exhibits a short-range dependence. This offers more opportunities to model network traffic or economic time series via tractable fractional processes. The fractional Ornstein – Uhlenbeck process of the first kind and the fractional Ornstein – Uhlenbeck process of the second kind are quite similar to simulate, since they can both be represented via stochastic differential equations.

General information

Publication status: Published
MoE publication type: G4 Doctoral dissertation (monograph)
Organisations: Department of Mathematics
Contributors: Kaarakka, T.
Number of pages: 102
Publication date: 6 Nov 2015

Publication information

Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3604-5
ISBN (Electronic): 978-952-15-3620-5
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1338
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 14.12.2015

Research output: Book/ReportDoctoral thesisMonograph

Markov Chain Monte Carlo Estimation of Stochastic Volatility Models with Finite and Infinite Activity Lévy Jumps: Evidence for Efficient Models and Algorithms

A financial model plays a key role in the valuation and risk management of financial derivatives, and it serves as an important tool for investors to measure the risk exposure of their portfolios and make predictions and decisions. However, the popular affine stochastic volatility models without jumps, such as the Heston model, have been questioned in the finance literature in terms of their appropriateness for modelling stock prices and pricing derivatives. Many alternative model specifications have been proposed in recent decades, including the specification of non-affine variance dynamics and the inclusion of Lévy jumps. However, the complexity introduced by further model specifications leads to poor probabilistic properties, and hence most popular estimation methods are not applicable. The Bayesian estimation method is among the few that work. In this thesis, I discuss the role of new model specifications and investigate the performance of Bayesian estimation methods. First, I use an extensive empirical data set to study how the use of infinite-activity Lévy jumps in stock returns and variance improves model performance. The stock returns and variance are driven by diffusions and different Lévy jumps, including the finite-activity compound Poisson jump and infinite-activity Variance Gamma and Normal Inverse Gaussian (NIG) jumps. Moreover, the non-affine linear variance process is compared to the affine square-root stochastic process. With the conventional Markov Chain Monte Carlo (MCMC) algorithms, including the Gibbs sampler and Metropolis-Hastings (MH) methods, and the Damien-Wakefield-Walker method to cope with complicated posteriors, eighteen different model specifications are estimated using the joint information of the S&P 500 index and the VIX index for 1996 – 2009. There is clear evidence that in terms of the goodness of fit and option pricing performance, a relatively parsimonious model with infinite-activity NIG jumps in returns and non-affine variance dynamics is particularly competitive. In the second part of the thesis, I examine the performance of advanced MCMC algorithms. The efficiency of the MH algorithm has been questioned because of its slow mixing speed, especially in the presence of high dimensions and a strong dependence between model parameters and state variables. Generally, a class of algorithms seeks to improve the MH by constructing more effective proposals, and another combines the MCMC with the Sequential Monte Carlo algorithms. To investigate, I first conduct simulation studies to compare the estimation performance of seven advanced Bayesian estimation methods against the MH. Specifically, I use the affine Heston model, the affine Bates model, and an affine model with NIG return jumps, and examine whether the different jump structures affect the estimation results. Second, I estimate the non-a ffine model with NIG return jumps using the joint information of the S&P 500 index and the VIX for 2002–2005 with selected algorithms that perform well in the simulation studies. The results of the simulation and empirical studies are mixed about the performance of the algorithms. The Fast Universal Self-tuned Sampler algorithms are particularly competitive in generating virtually independent samples and achieving the fastest mixing with a fixed number of MCMC runs, and their performance is stable regardless of the model specifications. However, they are computationally expensive. The computational costs of the Particle Markov Chain Monte Carlo (PMCMC) methods are much cheaper and also efficient in mixing, and they perform best when estimating the models without jumps/with NIG jumps in the simulation studies, as well as in the fit to the VIX in the empirical studies. However, the PMCMC methods are more vulnerable to model specifications than the other algorithms; in particular, the rare large compound Poisson jumps in the Bates model significantly reduce the acceptance rate and worsen the estimation performance of the PMCMC methods.

General information

Publication status: Published
MoE publication type: G4 Doctoral dissertation (monograph)
Organisations: Department of Industrial Management, Research group: Financial Engineering
Contributors: Yang, H.
Number of pages: 107
Publication date: 13 Nov 2015

Publication information

Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3597-0
ISBN (Electronic): 978-952-15-3617-5
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1331
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 16.12.2015

Research output: Book/ReportDoctoral thesisMonograph

Microrobotic platform with integrated force sensing microgrippers for characterization of fibrous materials: Case study on individual paper fibers

Mechanical characterization of micro-scale fibrous materials determines the key parameters which affect the quality of products such as composites, textile and paper. The current laboratory tests are mainly based on bulk measurements. This thesis introduces a microrobotic platform to handle and to characterize micro-scale fibers (MF), with the dimensions of few micrometers to hundreds of micrometers, at individual fiber level. The platform facilitates handling and specimen preparation of micro-scale fibrous material. A major challenge in mechanical characterization of MF is lack of proper force sensing microgrippers in the market. MF do not need a lot of force to manipulate, but their ultimate tensile strength is high and relatively large forces are required to perform a micro-tensile test. In this thesis, three force sensing microgrippers are developed and they are integrated into the mentioned microrobotic platform. Two of them are developed to measure the bonding forces between individual pulp fibers, normal to the bonded area (Z-direction) and parallel to the bonded area (shear-mode). Their force sensing solution is based on bending polyvinylidene fluoride (PVDF) films and their force range is up to 10mN. The third one, with the force range of 20mN, is developed to perform micro-tensile tests on MF. It uses a microspring and a magnetic encoder to measure the force. The force range of this force sensing microgripper can easily be increased by changing its microspring to a stiffer one. This feature makes the proposed force sensing approach adaptable to a wide range of MF. Even though pulp and paper fibers are used as a case study in this thesis, the applications of microrobotic solutions presented here are not limited to pulp and paper fibers for the following reason: pulp and paper fibers are natural fibers with random morphology, therefore if a microrobotic solution is capable of handling these morphologically challenging fibers, it is easily adaptable to synthetic fibers which have uniform morphology. The prototypes of all three force sensing microgrippers are calibrated and their performance are validated.

General information

Publication status: Published
MoE publication type: G4 Doctoral dissertation (monograph)
Organisations: Department of Automation Science and Engineering, Research area: Information Systems in Automation, Research area: Microsystems, Research area: Measurement Technology and Process Control
Contributors: Saketi, P.
Number of pages: 116
Publication date: 21 Jul 2015

Publication information

Place of publication: Tampere
Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3545-1
ISBN (Electronic): 978-952-15-3550-5
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1309
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 16.12.2015

Research output: Book/ReportDoctoral thesisMonograph

Oppivan organisaation kehittäminen osaavaksi organisaatioksi. Tapaustutkimus suomalaisessa teollisuusyrityksessä

General information

Publication status: Published
MoE publication type: G4 Doctoral dissertation (monograph)
Organisations: Department of Information Management and Logistics
Contributors: Hagman, S.
Number of pages: 209
Publication date: 22 May 2015

Publication information

Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3516-1
ISBN (Electronic): 978-952-15-3521-5
Original language: Finnish

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1296
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio 16.12.2015

Research output: Book/ReportDoctoral thesisMonograph

Value Creation in Private Equity: A Case Study of Outperforming Buyouts in the Nordic Countries

A number of studies have reported that the returns from acquisitions made by private equity (PE) firms have exceeded those of the public markets, e.g. the S&P 500. The outperformance displayed in the buyouts made by private equity firms is perplexing, particularly given the underperformance and high failure rate typically reported in studies of traditional corporate mergers and acquisitions (M&A). This dissertation strives to shed a light on the dichotomy by examining the activities in a select sample of buyouts during the pre-buyout phase, holding period, and the exit transaction. The study makes a number of significant contributions. It contributes to the theoretical and conceptual understanding of private equity buyouts by materially extending previous models of value creation into a novel taxonomy and cohesive structure. It contributes empirically by filling an important research gap concerning the subset of buyouts that exhibited exceptional outperformance compared to peer firms in PE portfolios. The inductive multiple–case study approach in combination with access to proprietary interview data permitted an in-depth analysis of the factors conducive to buyout value creation. The analysis indicates the key factors resulting in the outperformance were timing the entry and exit transaction to the business and industry cycles, identifying and executing the apposite business strategy, utilizing alternative modes of debt financing, discerning the pre-buyout target firm characteristics, implementing a pervasive array of operational improvements, and lastly, achieving high-levels of employee motivation and commitment across the organization.

General information

Publication status: Published
MoE publication type: G4 Doctoral dissertation (monograph)
Organisations: Department of Industrial Management
Contributors: Hannus, S.
Number of pages: 180
Publication date: 24 Oct 2015

Publication information

Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3589-5
ISBN (Electronic): 978-952-15-3614-4
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1328
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology
Versio ok 14.12.2015

Research output: Book/ReportDoctoral thesisMonograph

What Engineering Scientists Know and How They Know It: Towards Understanding the Philosophy of Engineering Science in Finland

Knowledge, research and science are all concepts into which every member of the scientific community must have some kind of insight. Although nowadays there appears to be a general consensus that engineering science is a scientific enterprise in and of its own, this has not been the case for very long. As a scientific discipline, engineering science has been somewhat neglected from the standpoint of epistemology and philosophy.

This study aims at understanding the prevailing philosophy of engineering science in Finland. It strives to comprehend the essence and challenges of knowledge and knowledge-creation processes in the field. It is hoped that the resulting comprehension will improve the research community's possibilities 1) to reflect critically upon its procedures, 2) to discuss what should be studied and how, and 3) to determine on what bases the processes and results should be evaluated. It is also expected to assist in developing doctoral education and to result in better supervision by providing a framework and vocabulary for philosophical and methodological discussion.

The cognitive interest in this study is practical, and the orientation hermeneutic. The process follows the general lines of qualitative research and applies the method of qualitative content analysis. As an empirical inquiry, this study belongs to the realm of science and technology studies. The phenomenon was studied in the context of Finland in the guise of a single-case study, with Tampere University of Technology as the case.

The final results support the view that engineering science certainly is a scientific discipline in and of its own, characterised by its own technical matrix. Most engineering science research can be classified as design science. Scientific inquiry in engineering science often requires building conceptual—but also material—constructs, as well as developing new methods for different purposes (analyses, design, implementation, evaluation). Consequently, the contributions recognised in research are of many types (artefacts, methods, declarative knowledge, proposals), but they are not always the kind of knowledge adhering to technical norms. Arriving at new theories or linking knowledge to existing theories seems to be even rarer than arriving at technical norms.

Engineering science is a discipline of considerable diversity. The objectives, methods, empirical processes and results pertaining to one type of inquiry can be very different from those found in other types of investigation. This study uncovered five distinct research profiles, but there may well be more to discover.

At the moment, the philosophy of engineering science has not raised significant interest, as it appears not to have many direct consequences; yet, there are challenges that engineering scientists face that may well be rooted in the lack of common understanding about the epistemic, ontological and methodological issues of the topic.

General information

Publication status: Published
MoE publication type: G4 Doctoral dissertation (monograph)
Organisations: Department of Information Management and Logistics
Contributors: Naukkarinen, J.
Number of pages: 205
Publication date: 20 Nov 2015

Publication information

Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3619-9
ISBN (Electronic): 978-952-15-3641-0
Original language: English

Publication series

Name: Tampere University of Technology. Publication
Publisher: Tampere University of Technology
Volume: 1344
ISSN (Print): 1459-2045

Bibliographical note

Awarding institution:Tampere University of Technology

Research output: Book/ReportDoctoral thesisMonograph

Älykäs kaupunkilogistiikka – CityLog

During the spring of 2014 Transport Research Centre Verne from the Tampere University of
Technology carried out an urban logistics study, where the current challenges and future
development needs of city logistics was studied. In the study, this problem is approached from
the perspective of shops and services located into the city centre. A part of the inner city
centre of Tampere was chosen as a case area of the study. The main research methods were
survey and expert interviews.
According to the results, the biggest challenges in the city logistics from the perspective of shop
and service office owners are narrow loading and unloading areas, problems related on
delivery time schedules and minor possibilities to affect logistics actions. In general, lack of
communication and the sharing of information are seen be poorly used in the city logistics.
However, retailers and service carries do not see logistics as their weakness nor their main
business area. According to the findings, in future the development of city logistics should be
done more with a close relationship with transportation companies and the public sector.
The future research and development needs should focus on communication between
transport companies and their customers, optimization of loading and unloading areas and the
impacts of rapidly increasing e-commerce. Highly automated and real-time communication
solutions could offer significant benefits for unconsciousness in delivery times for example.
Also the potential of underground logistics connections should be studied together with
loading and unloading optimization.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Information Management and Logistics
Contributors: Nykänen, L., Kallionpää, E., Liimatainen, H.
Number of pages: 20
Publication date: Sep 2015

Publication information

Publisher: Tampereen teknillinen yliopisto. Liikenteen tutkimuskeskus Verne.
ISBN (Electronic): 978-952-15-3588-8
Original language: Finnish

Publication series

Name: Tampereen teknillinen yliopisto. Liikenteen tutkimuskeskus Verne. Tutkimusraportti
ISSN (Print): 2242-3486
ASJC Scopus subject areas: Engineering(all)
Keywords: city logistics, urban logistics, intelligent transport system, e-commerce, future transport system

Bibliographical note

Lupa ja versio kunnossa 12.1.2016 /KK

Research output: Book/ReportCommissioned reportProfessional

CEO 2015: Proceedings of the 8th Nordic Conference on Construction Economics and Organization

Nordic conferences on Construction Economics and Organization (CEO conferences) have been biennial events for academics and industry people. These events are bringing together experts globally and those particularly from Nordic countries for sharing and learning new knowledge, to meet colleagues, get new connection and to visit/see interesting construction case projects or companies. For academics these conferences are important publishing channels. The accepted double-blind reviewed papers are published using widely recognised academic media.
We are very pleased to introduce 8th CEO conference 28th – 29th May 2015, Tampere Finland. The overall theme of this CEO2015 conference is Leadership for targeted change and proven advancements. The following titles represent key areas for which the conference was planned to contribute.

• Gaining desirable changes in real estate and construction sector

• Change towards sustainable built environment and environmental friendly behaviour

• Processes and methods for realizing change initiatives

• Principles, methods and tools for the management of change in processes and projects

• Learning from change: challenges in change processes

• Change behaviour – methods and models to affect change processes

• Business and operations management under unceasing change

• Built environment, companies and projects as systems.

The CEO2015 conference comprises 79 accepted papers and their presentations. The special issue of Elsevier Procedia Economics and Finance (Volume 21, 8th Nordic Conference on Construction Economics and Organization) includes 76 papers. This publication includes three papers. The editors are grateful to all authors for their valuable efforts.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Civil Engineering, Research group: Digitalization in the real estate and construction sector, Research group: Capacity Development of Water and Environmental Services CADWES, Research group: Real estate development
Contributors: Kähkönen, K. (ed.), Huovinen, P. (ed.), Keinänen, M. (ed.)
Number of pages: 40
Publication date: 2015

Publication information

Publisher: Tampere University of Technology. Department of Civil Engineering
ISBN (Electronic): 978-952-15-3534-5
Original language: English

Publication series

Name: Tampere University of Technology. Department of Civil Engineering. Construction Management and Economics. Report
Publisher: Tampere University of Technology
Volume: 16
ISSN (Print): 1797-8904

Bibliographical note

Versio ok 14.12.2015

Research output: Book/ReportCommissioned reportProfessional

Hiekkatekonurmipintaisten pesäpallokenttien ominaisuuksien muuttuminen ja elinkaari

Tässä tutkimuksessa selvitettiin hiekkatekonurmipintaisten pesäpallokenttien ominai-suuksia (jousto ja pinnan laatu) ja niiden muuttumista verrattuna aikaisempiin vuosina 1993–1997 tehtyihin tutkimuksiin. Tehtävällä tutkimuksella saatu numeerinen tieto hiekkatekonurmen ominaisuuksista on käyttökelpoinen työväline kenttien luokittelussa, käyttöhyväksynnässä ja peruskorjaustarpeen määrittelyssä.

Kentän pinnan jousto-ominaisuudet koostuvat rakennekerrosten joustosta ja hiekkate-konurmipinnoitteen joustosta. Pinnan joustoon vaikuttaa hiekan rakeisuus sekä nukan laatu (nukkatiheys, nukan pituus) ja kunto. Kenttärakenteen jousto-ominaisuuksia mitattiin kannettavalla pudotuspainolaitteella, Loadman II. Laitteen ”tehollinen” mittaussyvyys on n. 200 mm. Vuosina 2013–2014 mitattujen 30 hiekkatekonurmipintaisen pesäpallokentän joustomoduulien (E2) keskiarvo kenttäalueelta Loadmanilla (10 kg paino, ø 132 mm kuormituslevy) mitattuna oli 100,8 MPa. Aikaisemmassa tutkimuksessa pesäpallokentiltä vuosina 1994–1995 mitattujen kymmenen uuden kentän joustomoduulien (E2) keskiarvo kenttäalueelta oli 85,9 MPa ja vuosina 2013–2014 tehdyissä mittauksissa samojen kenttien keskiarvo oli 110,2 MPa. Vuonna 1996 mitattujen 26 kentän joustomoduulien (E2) keskiarvo kenttäalueelta oli 97,3 MPa. Tällöin kentät olivat mittaushetkellä uusia tai kes-kimäärin 1…3 vuoden ikäisiä poikkeuksena Ikaalisten, Oulun vanha ja Seinäjoen kentät, jotka silloin mitattiin 5…8 vuoden ikäisinä. Uuden kentän joustomoduuli on pienempi kuin vuoden käytössä olleen kentän, koska rakenteet ja etenkin nukan lomassa oleva täyttöhiekka tiivistyy sään ja kuormituksen vaikutuksesta. Myöhemmin kentän jousto-ominaisuudet eivät merkittävästi muutu. Uusi kenttä koetaan myös pelaajien mielestä usein pehmeäksi.

Pesäpallossa kovasta kentästä (korkea joustomoduuliarvo) on hyötyä pelillisesti pallon pomppaamisen ja vierinnän kannalta. Toisaalta kova kenttä lisää lihaksille ja nivelille tulevia kuormituksia. Joukkueiden lääkäreille tehdyn, pelaajien jalkoihin kohdistuvia vammoja koskevan kyselyn katsottiin antavan suuntaa pesäpallokentällä tapahtuvista vammoista. Pienimuotoisen kyselytutkimuksen mukaan pelaajalla esiintyviin jalka-vammoihin kentän ominaisuudet eivät juuri vaikuta. Yksi joukkueen lääkäri arvioi, että nilkan nyrjähdyksiin kentän ominaisuuksilla saattaa olla oma vaikutuksensa.

Pelaajayhdistyksen kautta tehtyyn kyselyyn kenttien pelillisistä ominaisuuksista saatiin pelaajilta ainoastaan 12 vastausta. Yleisvaikutelmana oli, että kentät koettiin pääsääntöisesti joustoltaan sopiviksi. Uutta kenttää pidettiin kuitenkin pehmeänä. Kentät olivat pidoltaan vähintään tyydyttäviä. Pelaajat katsoivat kentän tasaisuuden ja oikean hiekkamäärän olevan tärkeitä tekijöitä pallon liikkeen ennakoitavuuden kannalta. Sopiva tekonurmen hiekan täyttöaste on sellainen, että nukkaa näkyy noin 1…3 mm.

Pelialueella (etukenttä, takakenttä) nukan kuluminen on mittaustulosten mukaan keskimäärin 0,1…0,4 mm/vuosi. Kentän käytetyimmillä alueilla (pesät) nukan kulumisen voidaan mittausten mukaan arvioida olevan enintään 0,7 mm/vuosi. Muualla kovan kulutuksen alueella, kuten lyöjän pelipaikalla, nukka voi kuitenkin kulua puhki jo yhden pelikauden aikana. Riittävä nukan hiekkatäyttö pitää nukan pystyssä. Vajaatäyttöisessä tekonurmessa nukka taittuu. Taittunut, laossa oleva nukka hiertyy ja menee poikki herkemmin kuin pystyssä oleva nukka. Kentällä on huolehdittava tarpeellisesta hiekan lisäyksestä (oikea hiekkamäärä) ja hoidosta.

Hoitamalla hiekkatekonurmea harjauksella ja tarvittaessa imulaitteella pidetään te-konurmen täyttöhiekka ilmavana (irtonaisena) ja nukka pystyssä, jolloin maksimoidaan sen hoitomahdollisuudet ja käyttöikä. Hyvällä hoidolla hiekkatekonurmipintainen pesäpallokenttä on tämän tutkimuksen mukaan käyttökelpoinen yli 20 vuotta. Tämän jälkeenkin vanhaa hiekkatekonurmea voidaan käyttää erilaisissa liikuntapaikoissa, kuten esimerkiksi erilaisilla pienpelikentillä.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Civil Engineering, Research group: Earth Constructions
Contributors: Jäniskangas, T.
Number of pages: 45
Publication date: 2015

Publication information

Publisher: Tampereen teknillinen yliopisto. Rakennustekniikan laitos
ISBN (Print): 978-952-15-3512-3
ISBN (Electronic): 978-952-15-3513-0
Original language: Finnish

Publication series

Name: Tampereen teknillinen yliopisto. Rakennustekniikan laitos. Maa- ja pohjarakenteet. Tutkimusraportti
Publisher: Tampereen teknillinen yliopisto
Volume: 80
ISSN (Print): 1799-1684

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Versio ok 14.12.2015

Research output: Book/ReportCommissioned reportProfessional

HKPro3 - Valtion tukemien homekorjaushankkeiden arviointi: Jatkotutkimus

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Civil Engineering, Research group: Service Life Engineering of Structures
Contributors: Marttila, T., Annila, P., Kero, P., Suonketo, J., Heino, S., Pentti, M.
Number of pages: 68
Publication date: 2015

Publication information

Publisher: Tampereen teknillinen yliopisto, rakennustekniikan laitos, rakennustekniikka
ISBN (Electronic): 978-952-15-3659-5
Original language: Finnish

Publication series

Name: Tampereen teknillinen yliopisto. Rakennustekniikan laitos. Rakennetekniikka;Tutkimusraportti
Publisher: Tampereen teknillinen yliopisto, rakennustekniikan laitos, rakennustekniikka
Volume: 163
ISSN (Print): 1797-9161

Bibliographical note

pdf ok 11.1.2016 KK

Research output: Book/ReportCommissioned reportProfessional

Ideoita kaavoituksen sisällön uudistamiseen: Kaavojen merkintöjen ja määräysten kehittäminen (KAMMI-hanke)

The project concerning the designations used in the plans and regulations on the plans (KAMMI) was based on the need to develop the content of the plans at different levels to take the changes in the environment and future needs better into account. As an outcome recommendations are given to develop the spatial planning system in relation to the key steering needs that were identified and the European objectives relating to the harmonisation of the management of planning data (INSPIRE Directive).
The various subsections of the report provide the reasoning for the conclusions at the end. The report starts with a description of the history and current situation of the Finnish spatial planning system. A key part of the project were the so-called stimulus themes through which the main needs for change were to be identified and the core future tasks of spatial planning were to be specified. The reflections on the stimulus themes were mirrored against the development of the spatial planning system as a whole and its contents. In the project it was also considered necessary to construct a view and ideas to renew spatial planning from the perspective of designations and regulations. At the end, various types of designations were developed for the steering of land use by municipalities both on the more general and on quite detailed level.
The work is closely linked to the process of amending the Land Use and Building Act that has been started. It provides a particular perspective to the discussion on the reform of the regional and land use planning system.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Architecture
Contributors: Jama, T., Lehtovuori, P., Rajaniemi, J., Siikonen, M., Mäntynen, J., Rantanen, A., Joutsiniemi, A., Koskela, K., Kärkinen, T., Saarikoski, P., Saarniaho, K.
Number of pages: 74
Publication date: 26 Jan 2018

Publication information

Place of publication: Helsinki
Publisher: Ympäristöministeriö
Volume: 4/2018
ISBN (Print): 978-952-11-4779-1
ISBN (Electronic): 978-952-11-4780-7
Original language: Finnish
Keywords: kaavoitus, alueidenkäyttö, alueidenkäytön suunnittelu, kaavamerkinnät, kaavamääräykset

Research output: Book/ReportCommissioned reportProfessional

Industrialization of hybrid and additive manufacturing-Implementation to Finnish industry (HYBRAM)

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Automation Technology and Mechanical Engineering, Research area: Manufacturing and Automation, VTT
Contributors: Riipinen, T., Kujanpää, V., Komi, E., Kilpeläinen, P., Savolainen, M., Puukko, P., Vihinen, J., Coatanea, E., Mokhtarian, H.
Number of pages: 66
Publication date: 26 Nov 2018

Publication information

Publisher: VTT Technical Research Centre of Finland
Original language: English

Publication series

Name: Research Reports
Publisher: VTT Technical Research Centre of Finland

Research output: Book/ReportCommissioned reportProfessional

International Workshop on MicroFactories (IWMF 2012): 17th-20th June 2012 Tampere Hall Tampere, Finland

This Workshop provides a forum for researchers and practitioners in industry working on the diverse issues of micro and desktop factories, as well as technologies and processes applicable for micro and desktop factories. Micro and desktop factories decrease the need of factory floor space, and reduce energy consumption and improve material and resource utilization thus strongly supporting the new sustainable manufacturing paradigm. They can be seen also as a proper solution to point-of-need manufacturing of customized and personalized products near the point of need.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Mechanical Engineering and Industrial Systems
Contributors: Tuokko, R. (ed.), Lanz, M. (ed.), Luostarinen, P. (ed.)
Number of pages: 186
Publication date: 2012

Publication information

Publisher: Tampere University of Technology. Department of Production Engineering
ISBN (Electronic): 978-952-15-2936-8
Original language: English

Bibliographical note

Versio ok 16.12.2015

Research output: Book/ReportCommissioned reportProfessional

Kangasalan Lamminrahka. Yhdyskuntasuunnittelun ammattikurssi 1 2015

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: School of Architecture, Research group: Urban Planning
Contributors: Rajaniemi, J. (ed.), Thureson, J. (ed.), Chudoba, M. (ed.)
Number of pages: 92
Publication date: Jun 2015

Publication information

Place of publication: Tampere
Publisher: Tampere University of Technology, School of Architecture
ISBN (Print): 978-952-15-3540-6
ISBN (Electronic): 978-952-15-3541-3
Original language: Finnish

Research output: Book/ReportCommissioned reportProfessional

Kävelystä elinvoimaa

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Information Management and Logistics
Contributors: Rantala, T., Luukkonen, T., Karhula, K., Vaismaa, K., Mäntynen, J., Metsäpuro, P.
Number of pages: 142
Publication date: 2014

Publication information

Place of publication: Tampere
Publisher: Tampereen teknillinen yliopisto. Liikenteen tutkimuskeskus Verne.
ISBN (Print): 978-952-15-3231-3
ISBN (Electronic): 978-952-15-3232-0
Original language: Finnish

Research output: Book/ReportCommissioned reportProfessional

Kiviaines- ja luonnonkiviteollisuuden kehitysnäkymät

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Civil Engineering, Research group: Track Structures, Työ- ja elinkeinoministeriö, Infra ry, Suomen ympäristökeskus SYKE - Finnish Environment Institute, Kiviteollisuusliitto ry, Geologian tutkimuskeskus, Aalto University, Geological Survey of Finland
Contributors: Loukola-Ruskeeniemi, K. (ed.), Lonka, H. (ed.), Ehrukainen, E., Gustafsson, J., Honkanen, M., Härmä, P., Jauhiainen, P., Kuula, P., Nenonen, K., Pellinen, T., Rintala, J., Selonen, O., Martikainen, M., Aalto, M.
Number of pages: 72
Publication date: 2015

Publication information

Place of publication: Helsinki
Publisher: Työ- ja elinkeinoministeriö
Volume: 2015
ISBN (Print): 978-952-327-047-3
ISBN (Electronic): 978-952-327-048-0
Original language: Finnish

Publication series

Name: Työ- ja elinkeinoministeriön julkaisuja
Publisher: Työ- ja elinkeinoministeriö
Volume: 2015
No.: 54
ISSN (Print): 1797-3554
ISSN (Electronic): 1797-3562

Research output: Book/ReportCommissioned reportProfessional

Kohti kestävää Skanssia

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: School of Architecture
Contributors: Laak, M. (ed.), Del Barrio Batista, J. (ed.)
Number of pages: 87
Publication date: 2014

Publication information

Publisher: Tampereen teknillinen yliopisto. Arkkitehtuurin laitos
ISBN (Print): 978-952-15-3248-1
ISBN (Electronic): 978-952-15-3249-8
Original language: Finnish

Bibliographical note

Versio ok 14.12.2015

Research output: Book/ReportCommissioned reportProfessional

Life Beyond the Binary Code: Select Prose and Poetry

This is a collection of fourteen short stories and five poems from the first-ever creative writing course offered at the Language Center at Tampere University of Technology. Thematically varied, the writings range in humor, irony, wit, and compassion from high adventure to human oddity to drama, conflict and their resolution. Imaginative and well crafted, the collection testifies to the writers’ enthusiasm, creativity, and commitment to learning the necessary expressive skills.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Language Centre
Contributors: Lepistö, T. (ed.)
Number of pages: 79
Publication date: 2014

Publication information

Publisher: Tampere University of Technology, Language Center
ISBN (Print): 978-952-15-3290-0
ISBN (Electronic): 978-952-15-3291-7
Original language: English

Bibliographical note

Versio ok 16.12.2015

Research output: Book/ReportCommissioned reportProfessional

Liikuntapalveluiden ulkoistaminen ja palveluiden turvallisuus. Nykytilanne ja kuntien kokemukset – Loppuraportti

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Industrial Management, Research group: Safety Management and Engineering
Contributors: Hyytinen, T., Kivistö-Rahnasto, J.
Number of pages: 27
Publication date: 2015

Publication information

Place of publication: Helsinki
Publisher: OPETUS- JA KULTTUURIMINISTERIÖ
ISBN (Electronic): 978-952-263-342-2
Original language: Finnish

Publication series

Name: Opetus- ja kulttuuriministeriön julkaisuja
ISSN (Electronic): 1799-0351

Research output: Book/ReportCommissioned reportProfessional

Moduulirakentaminen: Teräskennoteknologian mahdollisuudet

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Civil Engineering, Research group: Capacity Development of Water and Environmental Services CADWES
Contributors: Sorri, J. (ed.)
Number of pages: 114
Publication date: 2013

Publication information

Publisher: Tampereen teknillinen yliopisto. Rakennustekniikan laitos
ISBN (Print): 978-952-15-3035-7
ISBN (Electronic): 978-952-15-3036-4
Original language: Finnish

Publication series

Name: Tampereen teknillinen yliopisto. Rakennustekniikan laitos. Rakennustuotanto ja -talous. Raportti
Publisher: Tampereen teknillinen yliopisto
Volume: 14
ISSN (Print): 1797-8904

Bibliographical note

Versio ok 16.12.2015

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Orimattilan Henna

Kurssijulkaisu. Vuoden 2014 yhdyskuntasuunnittelun ammattikurssi 1 opiskelijoiden harjoitustyöt. Kurssin harjoitustöiden teemana oli uuden kaupunginosan suunnittelu Lahti-Kerava -oikoradan varteen. Kurssi ja julkaisu toteutettiin yhteistyössä Orimattilan kaupungin kanssa.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: School of Architecture
Contributors: Laak, M. (ed.)
Number of pages: 89
Publication date: 2014

Publication information

Publisher: Tampereen teknillinen yliopisto. Arkkitehtuurin laitos
ISBN (Print): 978-952-15-3321-1
ISBN (Electronic): 978-952-15-3322-8
Original language: Finnish

Bibliographical note

Versio ok 16.12.2015

Research output: Book/ReportCommissioned reportProfessional

Proceedings of VikingPLoP 2012 Conference

The papers in this proceedings are updated versions of the papers workshopped in the conference. Participants submitted their papers for shepherding process. In shepherding process, experienced pattern writer gave ideas and feedback for the author, colloquially known as a sheep. The sheep incorporated this feedback in to her paper. After three iterations of shepherding the paper was discussed at the conference in writer's workshop. Workshop group gave comments, criticism and praise. After the conference sheep updated their papers according to the workshop feedback. This process of giving feedback was made possible by having community of trust. Mutual trust was built by playing non-competitive games and by having social activities.

VikingPLoP 2012 focused on patterns and their usage in various fields of expertise. These fields included a wide range of topics from language teaching to embedded system's software architecture. Bringing people together from various fields of expertise, stimulates creativity and new ideas might emerge. These innovations are reflected in the papers in these proceedings. VikingPLoP 2012 was especially a conference for newcomers and over half of the participants were first time PLoP participants.

These proceedings contain 10 papers and description of one focus group. In addition, a shepherding workshop was arranged and updated version of the demo pattern used in this workshop is also presented in the proceedings. The conference had two writer's workshop groups. Papers are organized as follows: in the first part of the proceedings patterns for embedded systems are presented and the second part contains general software related patterns. Finally in the third part, interdisciplinary patterns are included.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Pervasive Computing, Research area: Software engineering
Contributors: Eloranta, V. (ed.), Koskinen, J. (ed.), Leppänen, M. (ed.)
Number of pages: 142
Publication date: 2012

Publication information

Publisher: Tampere University of Technology. Department of Software Systems
ISBN (Print): 978-952-15-2943-6
ISBN (Electronic): 978-952-15-2944-3
Original language: English

Publication series

Name: Tampere University of Technology. Department of Software Systems. Report
Publisher: Tampere University of Technology
Volume: 22
ISSN (Print): 1797-836X

Bibliographical note

Versio ok 14.12.2015

Research output: Book/ReportCommissioned reportProfessional

Proceedings of VikingPLoP 2013 Conference

This is the proceedings of VikingPLoP 2013 – a record of all papers workshopped during the conference. VikingPLoP is a Nordic conference of pattern languages of programs which took place this year in Horse Inn of Luomajärvi, Ikaalinen, Finland in March 2013. VikingPLoP was organized jointly by Tampere University of Technology and Hillside Europe. VikingPLoP 2013 was also sponsored by Wiley which provided books for the focus group reading session. The conference was organized in Finland for the second time in a row. Previous location in 2012 was in Saariselkä Lapland. In 2013 vikings were moving towards south and chose the Horse Inn in Ikaalinen as the venue as it offered a luxurious opportunity for participants to experience rustic romance, good food, horseback riding, traditional Finnish sauna, the nature, and wilderness tracks. In March the landscape was still covered in snow making the landscape ruggedly beautiful.

The papers in this proceedings book are updated versions of the papers workshopped in the conference. In the beginning, participants submitted their papers for shepherding process. In the shepherding process, the shepherd, an experienced pattern writer, gave ideas and feedback for the author, colloquially known as a sheep. The sheep incorporated this feedback in to her paper. After three iterations of shepherding the paper was discussed at the conference in a writer's workshop. The workshop group gave comments, criticism and praise. After the conference the authors updated their papers according to the workshop feedback.

This process of giving feedback was made possible by having a community of trust. Mutual trust was built by playing non-competitive games and by having social activities. VikingPLoP 2013 focused on patterns and their usage in various fields of expertise. These fields included a wide range of topics from educational patterns to safety patterns and embedded system's software architecture patterns. Bringing people together from various fields of expertise stimulates creativity and new ideas might emerge. These innovations are reflected in the papers in these proceedings. VikingPLoP 2013 was especially a conference for newcomers and over half of the participants were first time PLoP participants.

These proceedings contain 9 papers. In addition, a book reading workshop was arranged with Bob Hanmer who presented his new title Pattern-Oriented Software Architecture for Dummies and discussed it with the participants using video conferencing tools.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Pervasive Computing, Research area: Software engineering
Contributors: Eloranta, V. (ed.), Koskinen, J., Leppänen, M. K.
Number of pages: 125
Publication date: 2013

Publication information

Publisher: Tampere University of Technology. Department of Pervasive Computing
ISBN (Print): 978-952-15-3166-8
ISBN (Electronic): 978-952-15-3167-5
Original language: English

Publication series

Name: Tampere University of Technology. Department of Pervasive Computing. Report
Publisher: Tampere University of Technology, Department of Pervasive Computing
Volume: 2
ISSN (Print): 2323-9174

Bibliographical note

Versio ok 14.12.2015

Research output: Book/ReportCommissioned reportProfessional

Puu-Hubi: Perinteestä uusiin innovaatioihin

Maailmalla on menossa puurakentamisen buumi, jolle ennakoidaan pitkää ikää ja valoisaa tulevaisuutta. Kehityksen etulinjassa on saksankielinen Keski-Eurooppa, Ruotsi ja Norja. Myös Kanadassa ja Yhdysvalloissa puurakentamisella on pitkät perinteet ja laajat markkinat. Vahvin muutosajuri puun käytön lisäämiselle on ilmastonmuutos. Suomi on mukana kansainvälisissä sopimuksissa, jotka sitovat meidät hiilidioksidipäästöjen runsaaseen pienentämiseen lähitulevaisuudessa. Mutta vaikka ympäristösopimukset asettavat kovia velvoitteita, ne tarjoavat myös uusia taloudellisia mahdollisuuksia.


Seinäjoen Ammattikorkeakoulun ja Tampereen teknillisen yliopiston yhteistyössä käynnistämä Puu-Hubi–projekti pyrki edistämään eteläpohjalaista puurakentamista. Tavoitteena oli puukerrostalon rakentamisessa vaadittava osaaminen ja tuotetarjonta, sekä näiden myötä kasvava liiketoiminta. Tässä kirjassa esitellään teemoja, joita hankkeen kuluessa kohdattiin, ja jotka tuntuivat tuoreilta. Kirjan tekstit eivät ole ”yhdestä puusta”, vaan ne rönsyävät omia uomiaan kohti yhteistä aihettamme, suomalaisen puurakentamisen uutta tulemista.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: School of Architecture, Research group: Urban Laboratory
Contributors: Hynynen, A. (ed.), Panu, A. (ed.), Taanila, T. (ed.)
Number of pages: 107
Publication date: 2015

Publication information

Publisher: Tampereen teknillinen yliopisto. Arkkitehtuurin laitos
ISBN (Print): 978-952-15-3497-3
ISBN (Electronic): 978-952-15-3498-0
Original language: Finnish

Bibliographical note

Versio ok 14.12.2015

Research output: Book/ReportCommissioned reportProfessional

Raitiotien seisakkeet: Yhdyskuntasuunnittelun jatkokurssi A ja B

Vuoden 2014 Yhdyskuntasuunnittelun jatkokurssin aiheena oli Tampereelle toteutettava kaupunkiraitiotie, joka tulee helpottamaan huomattavasti kulkemista Tampereella tulevaisuudessa.

Kurssi oli sisällöltään ja osallistujiltaan epätavanomainen. Osallistujia kurssilla oli useammasta eri tiedekunnasta: Tampereen teknillisen yliopiston arkkitehtiopiskelijoita ja liikennesuunnittelun opiskelijoita, Tampereen yliopistolta psykologian sekä sosiologian opiskelijoita.

Kolmiosaisen kurssin painopiste oli urban design-osuudella, muiden ollessa vapaavalintaisia. Suunnittelukohteina poikkitieteellisesti muodostetuilla ryhmillä oli kolme Tampereen raitiotien yleissuunnitelmassa esitettyä seisaketta: Hakametsä, Turtola ja Hallila. Useat osallistujat olivat valinneet myös planning-osuuden, johon koottiin jäsenistö kunkin seisakkeen design-osuuden ryhmistä.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: School of Architecture, Research group: Urban Planning
Contributors: Chudoba, M. (ed.), Rajaniemi, J. (ed.), Virkkala, J. (ed.)
Number of pages: 74
Publication date: 2015

Publication information

Publisher: Tampere University of Technology, School of Architecture
ISBN (Print): 978-952-15-3456-0
ISBN (Electronic): 978-952-15-3457-7
Original language: Finnish

Bibliographical note

Versio ok 14.12.2015

Research output: Book/ReportCommissioned reportProfessional

Rakennuksen ääniolosuhteiden suunnittelu ja toteutus

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Civil Engineering, Research group: Building Acoustics, Turku University of Applied Sciences
Contributors: Kylliäinen, M., Hongisto, V.
Number of pages: 50
Publication date: Dec 2019

Publication information

Place of publication: Helsinki
Publisher: Ympäristöministeriö
ISBN (Electronic): 978-952-361-035-4
Original language: Finnish

Publication series

Name: Ympäristöministeriön julkaisuja
Publisher: Ympäristöministeriö
No.: 28
ASJC Scopus subject areas: Acoustics and Ultrasonics
Keywords: akustiikka, huoneakustiikka, puheenerotettavuus, avoin oppimisympäristö, avotoimisto, opetustila

Research output: Book/ReportCommissioned reportProfessional

Seinäjoen ydinkeskustan olennaiset kehitysvaiheet ja sen 1950 - 70-lukujen rakennusperinnön arvottamisperiaatteita

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: School of Architecture, Research group: Urban Laboratory
Contributors: Hirvonen, T.
Number of pages: 121
Publication date: 2015

Publication information

Place of publication: Tampere
Publisher: Tampereen teknillinen yliopisto. Arkkitehtuurin laitos
ISBN (Electronic): 978-952-15-3549-9
Original language: Finnish

Bibliographical note

Versio ok 14.12.2015

Research output: Book/ReportCommissioned reportProfessional

Sustainable Design Studio 2014

The City of Tampere is experiencing a great regeneration boom. Several central areas are under redevelopment. The Hakametsä area is one of them. The ice hockey hall of Hakametsä and the surrounding commercial areas will be redeveloped in the near future. The identity and integrated sustainable urban solutions unifying the entire Hakametsä area is becoming a key issue.

The Sustainable Design Studio 2014 looked at the opportunities related to sustainable redevelopment of the new city district. In particular, the focus was in the intersection of Hervannan valtaväylä and Sammon valtatie. Currently this intersection divides the area in separate and isolated sections with very scattered street scape and difficult accessibility for light-traffic. The restructuring of the entire city structure could offer several opportunities for more sustainable city district in connection to the new tram line.

The task for the students had to two parts with different objectives and urban scales. The first part included a group work analysis on the Hakametsä area and designing a new urban strategy for a sustainable city district. The lack of overall scheme for the area motivated the students to look at the intersection area as the point for connecting the four sectors divided by Hervannan valtaväylä and Sammon valtatie.

The second individual part of the assignment consisted of designing additional floors to an existing residential building next to the Hakametsä ice hockey rink. The work aimed at creating appealing typological solutions for attractive in-fill architecture thus increasing the opportunities for densification of the 70s residential areas at large. The starting point for the design was the structural system developed in KORKO research project of the Tampere University of Technology. The research project delivered a concept for a prefabricated steel structure allowing fast and affordable assembly of prefabricated wooden housing modules. The objective of the course was to connect university education and research in a mutually benefiting way that is motivating for the students.

The results of the studio provided a comprehensive overview of different approaches to reshape the urban plan for more sustainable city structure. The need for the new character of Hervannan valtaväylä became evident. Should the road be a main artery focusing on delivering the traffic flows, or, is it part of integrated city structure potentially lowering the speeds of vehicles and calling for improved lighttraffic conditions? The students’ works opened up a number of alternative perspectives – including engineering studies on sustainability issues. The Hakametsä area is a great potential for sustainable urban densification within the proximity of the city center, yet with a unique character making it a distinct and identifiable place.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Civil Engineering, School of Architecture
Contributors: Edelman, H. (ed.), Härkönen, K. (ed.)
Number of pages: 79
Publication date: 2015

Publication information

Publisher: Tampere University of Technology. School of Architecture
ISBN (Print): 978-952-15-3473-7
ISBN (Electronic): 978-952-15-3474-4
Original language: English

Bibliographical note

ORG=rak,0.25
ORG=ark,0.75

Research output: Book/ReportCommissioned reportProfessional

Towards a sustainable Skanssi

Course publication. The publication contains course works submitted for the Sustainble Design Studio 2013 which concentrate on the future development of the Skanssi area in Turku. For the publication six student groups' analyses and structure & masterplan –proposals have been gathered. In addition to that, selected individual works by 12 students are shown in this publication. Furthermore this publication contains a green roof and storm water management analysis and an environmental and landscape management proposal for the new residential areas.

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: School of Architecture
Contributors: Laak, M. (ed.), Del Barrio Batista, J. (ed.)
Number of pages: 87
Publication date: 2014

Publication information

Publisher: Tampere University of Technology, School of Architecture
ISBN (Electronic): 978-952-15-3260-3
Original language: English

Bibliographical note

AUX=ark,"Del Barrio Batista, Juan"

Versio ok 14.12.2015

Research output: Book/ReportCommissioned reportProfessional

Turvallisuuden johtajat - Esimiesten johtajuus, osaaminen ja sitoutuminen

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Industrial Management, Research group: Safety Management and Engineering
Contributors: Tappura, S., Hyytinen, T., Kivistö-Rahnasto, J., Nenonen, N., Vasara, J.
Number of pages: 144
Publication date: 30 Dec 2015

Publication information

Place of publication: Tampere
Publisher: Tampereen teknillinen yliopisto; Tampereen yliopisto
ISBN (Electronic): 978-952-15-3662-5
Original language: Finnish

Research output: Book/ReportCommissioned reportProfessional

Vaihdetta isommalle: Pyöräilyn potentiaalin hyödyntäminen

General information

Publication status: Published
MoE publication type: D4 Published development or research report or study
Organisations: Department of Information Management and Logistics
Contributors: Metsäpuro, P., Vaismaa, K., Karhula, K., Luukkonen, T., Mäntynen, J., Rantala, T.
Number of pages: 145
Publication date: 2014

Publication information

Place of publication: Tampere
Publisher: Tampereen teknillinen yliopisto. Liikenteen tutkimuskeskus Verne.
ISBN (Print): 978-952-15-3243-6
ISBN (Electronic): 978-952-15-3244-3
Original language: Finnish

Research output: Book/ReportCommissioned reportProfessional

Joustavat asuinympäristöt: 10 visiota aikaa kestävään kaupunkiasumiseen

Housing production is usually based on the belief of predictability, but this approach is inconsistent with the fact that the future cannot be predicted. Residential design and construction must therefore adopt more flexible and adaptable principles, where the impossibility of making predictions is taken into account. Adaptable housing can help to meet the forthcoming and increasingly diverse housing needs, providing housing alternatives in a sustainable way. Ten visions presented in this publication introduce a wide range of means, methods and scales to achieve adaptability and flexibility in housing construction. The publication consists of ten design assignments created during an advanced housing design course at Tampere University of Technology in spring 2013. The publication presents not only a wide range of means to achieve flexibility in housing construction, but also their direct connection with the practice. The publication is part of a study concerning user-centric spaces in the Indoor Environment Program of RYM Oy.

General information

Publication status: Published
MoE publication type: D6 Edited professional books
Organisations: School of Architecture, Research group: ASUTUT
Contributors: Kotilainen, S. (ed.), Hedman, M. (ed.), Heikkinen, J. (ed.)
Number of pages: 268
Publication date: 31 Mar 2015

Publication information

Place of publication: Tampere
Publisher: Tampereen teknillinen yliopisto. Arkkitehtuurin laitos
ISBN (Print): 978-952-15-3476-8
ISBN (Electronic): 978-952-15-3477-5
Original language: Finnish

Publication series

Name: Housing Design
Publisher: Tampere University of Technology. School of Architecture. Housing Design. Publication;16

Bibliographical note

Versio ja lupa ok 12.1.2016 KK

Research output: Book/ReportAnthologyProfessional

Application and Theory of Petri Nets and Concurrency: 36th International Conference, PETRI NETS 2015 Brussels, Belgium, June 21-26, 2015 Proceedings

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Department of Mathematics, Research group: MAT Computer Science and Applied Logics, Regulation of learning and active learning methods (REALMEE), Embedded Electronics research unit of the Bio Electro and Mechanical Systems (BEAMS) department of the Université Libre de Bruxelles
Contributors: Devillers, R. (ed.), Valmari, A. (ed.)
Publication date: 2015

Publication information

Publisher: Springer Verlag
Volume: 9115
ISBN (Print): 978-3-319-19487-5
ISBN (Electronic): 978-3-319-19488-2
Original language: English

Publication series

Name: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume: 9115
ISSN (Print): 0302-9743
ISSN (Electronic): 1611-3349
ASJC Scopus subject areas: Computer Science(all), Theoretical Computer Science

Bibliographical note

JUFOID=62555

Source: Scopus
Source ID: 84937510301

Research output: Book/ReportAnthologyScientificpeer-review

Complexity and Digitalisation of Cities - Challenges for Urban Planning and Design: Conference Proceedings of 13th AESOP Complexity and Planning Thematic Group Meeting 15th-16th January 2015, Tampere, Finland

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: School of Architecture, Research group: Urban Planning Theory
Contributors: Partanen, J. (ed.)
Number of pages: 226
Publication date: 2015

Publication information

Publisher: Tampere University of Technology. School of Architecture
ISBN (Electronic): 978-952-15-3711-0
Original language: English

Research output: Book/ReportAnthologyScientificpeer-review

Internet of Things, Smart Spaces, and Next Generation Networks and Systems: 15th International Conference, NEW2AN 2015, and 8th Conference, ruSMART 2015, St. Petersburg, Russia, August 26-28, 2015, Proceedings

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Department of Electronics and Communications Engineering, Research group: Emerging Technologies for Nano-Bio-Info-Cogno, Wireless Communications and Positioning (WICO)
Contributors: Balandin, S. (ed.), Andreev, S. (ed.), Koucheryavy, Y. (ed.)
Publication date: 2015

Publication information

Publisher: Springer International Publishing
ISBN (Print): 978-3-319-23125-9
ISBN (Electronic): 978-3-319-23126-6
Original language: English

Publication series

Name: Lecture Notes in Computer Science
Volume: 9247
ISSN (Print): 0302-9743

Bibliographical note

JUFOID=62555

Research output: Book/ReportAnthologyScientificpeer-review

Open knowledge-driven manufacturing & logistics - The eScop approach

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Department of Automation Science and Engineering, Research group: Factory automation systems technology
Contributors: Strzelczak, S. (ed.), Balda, P. (ed.), Garetti, M. (ed.), Lobov, A. (ed.)
Number of pages: 404
Publication date: 2015

Publication information

Place of publication: Warsaw, Poland
Publisher: Warsaw University of Technology Publishing House
ISBN (Print): 978-83-7814-440-3
Original language: English

Research output: Book/ReportAnthologyScientificpeer-review

Proceedings of the 1st Transdisciplinary Workplace Research Conference

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Research group: Responsible Construction, Civil Engineering
Contributors: Nenonen, S. (ed.), Salmisto, A. (ed.), Petrulaitiene, V. (ed.)
Number of pages: 64
Publication date: 2018

Publication information

Publisher: Tampere University of Technology. Department of Civil Engineering
ISBN (Print): 978-952-15-4200-9
ISBN (Electronic): 978-952-15-4201-5
Original language: English

Publication series

Name: Tampereen teknillinen yliopisto. Rakennustekniikan laboratorio. Rakennustuotanto ja -talous. Raportti
No.: 26
ISSN (Print): 2489-5717

Research output: Book/ReportAnthologyScientificpeer-review

Proceedings of the 25th International Conference on Information Modelling and Knowledge Bases (EJC 2015), 8-12 June, 2015, Maribor, Slovenia

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Pori Department, Research group: Software Engineering and Intelligent Systems, University of Maribor, Slovenia, Keio University, Japan, Christian-Albrechts-Universität zu Kiel
Contributors: Welzer , T. (ed.), Hölbl, M. (ed.), Kiyoki, Y. (ed.), Thalheim, B. (ed.), Jaakkola, H. (ed.)
Publication date: 2015

Publication information

Place of publication: Maribor, Slovenia
Publisher: University of Maribor, Faculty of Electrical Engineering and Computer Science
ISBN (Electronic): 978-961-248-486-6
Original language: English

Research output: Book/ReportAnthologyScientificpeer-review

Proceedings of the 26th International Conference on Information Modelling and Knowledge Bases - EJC 2016: June 6-10, 2016, Tampere, Finland.

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Pori Department, Research group: Software Engineering and Intelligent Systems, Christian-Albrechts-University Kiel, Keio University, Japan, Komazawa University
Contributors: Jaakkola, H. (ed.), Thalheim, B. (ed.), Kiyoki, Y. (ed.), Yoshida, N. (ed.)
Publication date: 2016

Publication information

Place of publication: Tampere
Publisher: Tampere University of Technology
ISBN (Electronic): 978-952-15-3747-9
Original language: English

Publication series

Name: Tampere University of Technology, Pori Department Publications
Publisher: Tampere University of Technology
ISSN (Electronic): 2323-8976

Research output: Book/ReportAnthologyScientificpeer-review

Proceedings of the CIB World Building Congress 2016: Volume I - Creating built environments of new opportunities

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Department of Civil Engineering, Research area: Construction Management and Economics, Research group: Digitalization in the real estate and construction sector, Research group: Capacity Development of Water and Environmental Services CADWES, Research group: Real estate development
Contributors: Kähkönen, K. (ed.), Keinänen, M. (ed.)
Number of pages: 917
Publication date: 27 May 2016

Publication information

Publisher: Tampere University of Technology. Department of Civil Engineering
Volume: 1
ISBN (Electronic): 978-952-15-3741-7
Original language: English

Publication series

Name: Tampere University of Technology. Department of Civil Engineering. Construction Management and Economics. Report
Volume: 18
ISSN (Print): 1797-8904

Bibliographical note

JUFOID=84376

Research output: Book/ReportAnthologyScientificpeer-review

Proceedings of the CIB World Building Congress 2016: Volume III - Building Up Business Operations and Their Logic. Shaping Materials and Technologies

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Department of Civil Engineering, Research group: Digitalization in the real estate and construction sector
Contributors: Saari, A. (ed.), Huovinen, P. (ed.)
Number of pages: 743
Publication date: 27 May 2016

Publication information

Publisher: Tampere University of Technology. Department of Civil Engineering
Volume: 3
ISBN (Electronic): 978-952-15-3743-1
Original language: English

Publication series

Name: Tampere University of Technology. Department of Civil Engineering. Construction Management and Economics. Report
Volume: 18
ISSN (Print): 1797-8904

Research output: Book/ReportAnthologyScientificpeer-review

Proceedings of the CIB World Building Congress 2016: Volume IV - Understanding Impacts and Functioning of Different Solutions

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Department of Civil Engineering, Research group: Capacity Development of Water and Environmental Services CADWES
Contributors: Nenonen, S. (ed.), Junnonen, J. (ed.)
Number of pages: 718
Publication date: 27 May 2016

Publication information

Publisher: Tampere University of Technology. Department of Civil Engineering
Volume: 4
ISBN (Electronic): 978-952-15-3744-8
Original language: English

Publication series

Name: Tampere University of Technology. Department of Civil Engineering. Construction Management and Economics. Report
Volume: 18
ISSN (Print): 1797-8904

Research output: Book/ReportAnthologyScientificpeer-review

Proceedings of the Detection and Classification of Acoustic Scenes and Events 2016 Workshop (DCASE2016)

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Department of Signal Processing, Research group: Audio research group
Contributors: Virtanen, T. (ed.), Mesaros, A. (ed.), Heittola, T. (ed.), Plumbley, M. D. (ed.), Foster, P. (ed.), Benetos, E. (ed.), Lagrange, M. (ed.)
Number of pages: 119
Publication date: 2016

Publication information

Publisher: Tampere University of Technology. Department of Signal Processing
ISBN (Electronic): 978-952-15-3807-0
Original language: English

Research output: Book/ReportAnthologyScientificpeer-review

Rakennusfysiikka 2015. Uusimmat tutkimustulokset ja hyvät käytännön ratkaisut: 20.-22.10.2015, Tampere. Seminaarijulkaisu 4

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Department of Civil Engineering, Research group: Building Physics
Contributors: Vinha, J. (ed.), Ruuska, T. (ed.)
Publication date: 2015

Publication information

Place of publication: Tampere
Publisher: Tampereen teknillinen yliopisto. Rakennustekniikan laitos
ISBN (Print): 978-952-15-3580-2
Original language: Finnish

Publication series

Name: Tampereen teknillinen yliopisto, rakennustekniikan laitos, rakennetekniikka, seminaarijulkaisu
Publisher: Tampereen teknillinen yliopisto

Research output: Book/ReportAnthologyScientificpeer-review

The 13th Nordic Steel Construction Conference (NSCC.2015)

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Department of Civil Engineering, Research group: Structural Mechanics, Research group: Metal and Light-wight structures
Contributors: Heinisuo, M. (ed.), Mäkinen, J. (ed.)
Publication date: 23 Sep 2015

Publication information

Place of publication: Tampere
Publisher: Tampere University of Technology
ISBN (Print): 978-952-15-3578-9
ISBN (Electronic): 978-952-15-3579-6
Original language: English

Research output: Book/ReportAnthologyScientificpeer-review

The Fourteenth Scandinavian International Conference on Fluid Power, SICFP15: Proceedings

At this time the conference includes various themes like hybrids, drives, digital hydraulics and pneumatics. Special attention in the program is given for energy efficiency, renewable energy production and energy recovery. They are reflecting well the situation, where environmental issues and energy saving are increasingly important issues.

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Department of Intelligent Hydraulics and Automation, Research group: Fluid power automation in mobile machines
Contributors: Laamanen, A. (ed.), Huhtala, K. (ed.)
Number of pages: 835
Publication date: 2015

Publication information

Publisher: Tampere University of Technology. Department of Intelligent Hydraulics and Automation
ISBN (Electronic): 978-952-15-3530-7, 978-952-15-3658-8
Original language: English

Publication series

Name: Scandinavian International Conference on Fluid Power (SICFP)
Publisher: Tampere University of Technology
ISSN (Print): 2342-2726

Bibliographical note

Versio ok 16.12.2015

Research output: Book/ReportAnthologyScientificpeer-review

The Fourteenth Scandinavian International Conference on Fluid Power, SICFP15: Abstracts

At this time the conference includes various themes like hybrids, drives, digital hydraulics and pneumatics. Special attention in the program is given for energy efficiency, renewable energy production and energy recovery. They are reflecting well the situation, where environmental issues and energy saving are increasingly important issues.

General information

Publication status: Published
MoE publication type: C2 Edited books
Organisations: Department of Intelligent Hydraulics and Automation, Research group: Fluid power automation in mobile machines
Contributors: Laamanen, A. (ed.), Huhtala, K. (ed.)
Number of pages: 100
Publication date: 2015

Publication information

Publisher: Tampere University of Technology, Department of Intelligent Hydraulics and Automation
ISBN (Print): 978-952-15-3529-1
ISBN (Electronic): 978-952-15-3548-2
Original language: English

Bibliographical note

sicfp15_abstract_book ok 8.1.2016 KK
Varsinainen proceedings-julkaisu hyväksytty tiedonkeruuseen

Research output: Book/ReportAnthologyScientificpeer-review

Lahdelma & Mahlamäki Architects: Works

General information

Publication status: Published
MoE publication type: D5 Text book, professional manual or guide or a dictionary
Organisations: School of Architecture, Research group: Architecture: History, Theory and Innovations
Contributors: Lahdelma, I.
Number of pages: 152
Publication date: 2014

Publication information

Publisher: Rakennustieto
ISBN (Print): 978-952-267-071-7
Original language: English

Research output: Book/ReportBookProfessional

Crossing Boundaries for Learning – through Technology and Human Efforts

General information

Publication status: Published
MoE publication type: C1 Separate scientific books
Organisations: University of Helsinki
Contributors: Niemi, H., Multisilta, J., Löfström, E.
Publication date: 2014

Publication information

Publisher: CICERO Learning Network, University of Helsinki
ISBN (Print): 978-952-10-9878-9
Original language: Undefined/Unknown
Keywords: 516 Educational sciences
Source: Bibtex
Source ID: urn:8ca22e584c9a353efda0aea3cc9fbf1d

Research output: Book/ReportBookScientificpeer-review

A unified lcf-hcf model based on continuum mechanics

In this work, a unified low- and high-cycle fatigue model based on continuum
mechanics is developed. The high-cycle part of the model is based on the concepts of a moving endurance surface in the stress space with an associated evolving isotropic damage variable. The low-cycle part of the model is formulated as a traditional nonlinear isotropic and kinematic hardening J2-plasticity model. The LCF- and HCF-models are connected via the damage evolution equation. Performace of the model is demonstrated with a numerical example.

General information

Publication status: Published
Organisations: Department of Mechanical Engineering and Industrial Systems, Research area: Applied Mechanics, Department of Civil Engineering, Lund University
Contributors: Kouhia, R., Holopainen, S., Ottosen, N. S., Matti, R., Saksala, T.
Number of pages: 4
Publication date: 2016
Peer-reviewed: Unknown
Event: Paper presented at Nordic Seminar on Computational Mechanics, .

Research output: Other conference contributionPaper, poster or abstractScientific

Continuum approach for modeling fatigue in amorphous glassy polymers. Applications to the investigation of damage mechanisms in polycarbonate

In this study, we attempt to elucidate how the various micro-mechanisms con-
tribute to the fatigue development in an amorphous glassy matrix. To investi-
gate this issue, we propose an approach suitable for modeling fatigue in amor-
phous polymers. The studies are based on finite element analyses of a dogbone-shaped test specimen featuring plastic instabilities and localization behavior.
Also discussed is the development of fatigue damage in toughened polymers, in
view of dispersed particles. The results show that the fatigue damage initiates
at the sites following closely the localization of the plastic deformations or in-
stabilities, while the concentrated regions of hydrostatic stress were essentially
different. The more rigid the inclusions are, the more intensive the damage
growth in the ligaments between the inclusions, while the rigidity has no im-
pact on the location of the matrix damage. On the basis of the results, the
micro-mechanism which will trigger fatigue damage is discussed.

General information

Publication status: Published
Organisations: Department of Mechanical Engineering and Industrial Systems
Contributors: Holopainen, S., Kouhia, R.
Publication date: 28 Oct 2016
Peer-reviewed: Unknown
Event: 

Research output: Other conference contributionPaper, poster or abstractScientific

Finite temperature path-integral modeling of quantum dot cellular automata

General information

Publication status: Published
Organisations: Department of Physics, Research group: Semiconductor Technology and Applications, Optoelectronics Research Centre, Research area: Computational Physics, Research group: Electronic Structure Theory
Contributors: Tiihonen, J., Schramm, A., Kylänpää, I., Rantala, T.
Publication date: 29 Mar 2016
Peer-reviewed: Unknown
Event: Paper presented at PHYSICS DAYS / FYSIIKAN PÄIVÄT : ANNUAL MEETING OF THE FINNISH PHYSICAL SOCIETY, .

Research output: Other conference contributionPaper, poster or abstractScientific

Power bases in lead organization network governance form: a multi-level approach

General information

Publication status: Published
Organisations: Pori Department, Research group: Business Ecosystems, Networks and Innovations
Contributors: Suominen, A., Mäenpää, S.
Publication date: 7 Jul 2016
Peer-reviewed: Unknown
Event: Paper presented at European Group for Organizational Studies Colloquium, .

Research output: Other conference contributionPaper, poster or abstractScientific

Social media analytics empowering marketing insight- A framework for analyzing affective experiences from social media content

General information

Publication status: Published
Organisations: Department of Information Management and Logistics, Research group: Novi, Managing digital industrial transformation (mDIT), Tampere University of Applied Science, Turku University of Applied Science
Contributors: Jussila, J., Boedeker, M., Jalonen, H., Helander, N.
Publication date: 27 May 2016
Peer-reviewed: Unknown
Event: Paper presented at EMAC 2016, Oslo, Norway.

Research output: Other conference contributionPaper, poster or abstractScientific

Use of high-order beams to calibrate spatial light modulators for microscopy

We present here a technique based on high-order laser beams to quickly calibrate phase-only SLMs for microscopy. This method uses the microscopy setup itself and therefore no extra setups or alignment are required.

General information

Publication status: Published
Organisations: Department of Physics, Research area: Optics, Research group: Nonlinear Optics
Contributors: Turquet, L., Kauranen, M., Bautista, G.
Number of pages: 1
Publication date: 2016
Peer-reviewed: Unknown
Event: 

Research output: Other conference contributionPaper, poster or abstractScientific

Active corrosion phase as a service life extension of concrete facades

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Civil Engineering, Research group: Service Life Engineering of Structures, Research area: Structural Engineering
Contributors: Köliö, A., Lahdensivu, J., Pentti, M.
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the Eurocorr 2015, European corrosion congress
Publisher: Austrian Society for Metallurgy and Materials (ASMET); EFC; DECHEMA

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Analysis on bus travel time through traffic light intersection

As the number of vehicles grows, cities around the world face serious road traffic congestion problems. One solution is the introduction of bus traffic with intelligent traffic light control. Travel time in an urban area consists of driving time and dwelling time. To analyze the effect of traffic light, data was collected from two sources: GPS bus locations and traffic light system. Travel time in an intersection depends on the arrival time on the traffic light sequence
and other traffic. The traffic light on the selected segment utilizes bus priority. Comparisons with bus priority and without were carried out. Bus priority in the intersection causes a slight decrease on travel time and removes some of the larger waiting times. Bus arrival time on the traffic light sequence is random. In this paper travel time of buses through an intersection with bus priority is analyzed.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Signal Processing, Research group: MMDM, Research area: Information Technology for Biology and Health, Research area: Intelligence in Machines, Research area: Signal and Information Processing, University of Tampere
Contributors: Kerminen, R., Wang, C., Visa, A.
Number of pages: 10
Publication date: 2015

Host publication information

Title of host publication: ITS World Congress 2015 Proceedings : Towards Intelligent Mobility – Better Use of Space
Article number: EU-ITS-2051

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Application of terrestrial LiDAR and modelling of tree branching structure for plant- scaling models in tropical forest trees

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Mathematics, Research group: MAT Inverse Problems, Wageningen University and the UNESCO-IHE Institute for Water Education, Delft, The Netherlands, 18.10.2013
Contributors: Lau Sarmiento, A., Bartholomeus, H., Herold, M., Martius, C., Malhi, Y., Patrick Bentley, L., Shenkin, A., Raumonen, P.
Number of pages: 3
Pages: 96-98
Publication date: 2015

Host publication information

Title of host publication: Proceedings of SilviLaser 2015 : 14th conference on Lidar Applications for Assessing and Managing Forest Ecosystems

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Are Finns walking the talk? : Examining the national collaboration process on engineering education for sustainable development five years later

In 2009, the National Collaboration Group for Finnish Engineering Education published a proposal for action on sustainable development (SD). The aim of this paper is to analyze how the three main universities providing engineering education have fulfilled their commitments. The study consists of interviews with key stakeholders supplemented with the analysis of documented material. It is argued that the studied universities are now committed to SD in their strategies. However, a lot of work remains to be done before the strategies are implemented and SD is integrated to all degree programmes. Recommendations for the next steps are presented.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Chemistry and Bioengineering, The Education Fund
Contributors: Takala, A., Korhonen-Yrjänheikki, K.
Publication date: 1 Jun 2015

Host publication information

Title of host publication: Conference on Engineering Education for Sustainable Development (7th : 2015 : Vancouver, B.C.)

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

A study of a condensing heat exchanger and electrostatic precipitator combination for small-scale wood combustion

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Physics, Research area: Aerosol Physics, Research area: Optics, Research group: The Instrumentation, Emissions, and Atmospheric Aerosols Group
Contributors: Grigonyte, J., Sippula, O., Tissari, J., Laitinen, A., Keskinen, J., Kortelainen, M., Lamberg, H., Jokiniemi, J.
Publication date: 2015

Host publication information

Title of host publication: European Aerosol Conference 2015 : EAC 2015, Milan, Italy
Article number: 2COA_P021

Bibliographical note

ISBN kysytty, HO.

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Automated driving and the key megatrends of future

Road transport is facing several changes that derive from the operational environment. Technological
progress supporting advances in automated driving is one of these. Alongside e.g. globalisation,
urbanisation, aging, climate change and digitalisation are challenging the transport needs and solutions
of today. This paper discusses how automated driving is related to the factors of change. Based on the
analysis, the progress towards more automated driving is supporting and is supported by the changes
deriving from the key megatrends even though also some conflicting issues are recognised.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Information Management and Logistics
Contributors: Pöllänen, M., Nykänen, L.
Publication date: 2014

Host publication information

Title of host publication: ITS European Congress : 10th ITS EUROPEAN CONGRESS, Helsinki, Finland 16-19 June 2014
Article number: TP0067
ASJC Scopus subject areas: Engineering(all)
Keywords: automated driving, megatrends, FUTURE-RESEARCH

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Benefits of digitally guided buying in B2B markets

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Research group: Cost Management Center
Contributors: Ojala, M., Mahlamäki, T.
Publication date: 2016

Host publication information

Title of host publication: 25th annual IPSERA Conference : Dortmund, Sunday 20 March - Wednesday 23 March 2016
Place of publication: Dortmund

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Betonin kosteusteknisten materiaaliominaisuuksien määrittäminen

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Civil Engineering, Research group: Building Physics, Laboratory of Civil Engineering
Contributors: Vänttinen, K., Tuominen, E., Vinha, J.
Number of pages: 10
Pages: 461-470
Publication date: 24 Oct 2017

Host publication information

Title of host publication: Rakennusfysiikka 2017. Uusimmat tutkimustulokset ja hyvät käytännön ratkaisut : 24.-26.10.2017, Tampere
Volume: 2
Place of publication: Tampere
Publisher: Tampereen teknillinen yliopisto, Rakennustekniikka, Rakennusfysiikka
Editors: Vinha, J., Kivioja, H.
ISBN (Print): 978-952-15-4023-3

Publication series

Name: Tampereen teknillinen yliopisto. Rakennustekniikka. Rakennusfysiikka.

Bibliographical note

INT=RAK, "Vänttinen, Kari"

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Challenges in the paradigm change from mobility as a self-service to mobility as a service

The predominant paradigm of everyday mobility in Finland is mobility as a self-service where most of the mobility needs are taken care with passenger cars. The ‘Mobility as a Service’ (MaaS) model is a new paradigm that challenges the current mobility practises. The purpose of this paper is to describe the current state of mobility and analyse the potential and challenges of MaaS against current situation in demographics, mobility and mobility related consumption in Finland. It would require a big shift in the current mobility practises for MaaS to become mainstream. In this paper, on one hand potential and one the other more challenging customer segments are recognised and the possibilities of MaaS to address these are discussed.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Civil Engineering
Contributors: Pöllänen, M., Utriainen, R., Viri, R.
Number of pages: 20
Pages: 246-265
Publication date: 2017

Host publication information

Title of host publication: Conference Proceedings 1st International Conference of Mobility as a Service : ICoMaaS, Tampere 28.-29.11.2017
Publisher: Tampere University of Technology
Keywords: Mobility as a Service, MaaS, challenges, potential

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Changes in operations when introducing disruptive technologies

Disruptive technologies alter the competitive conditions by proposing new sources of value to the customers and possibly cannibalizing existing offerings. Their implications are frequently discussed from the perspective of markets and competition, whereas changes in the internal operations of manufacturing firms are not sufficiently considered. This study explores changes in the practices and delivery chain cooperation of suppliers, when introducing disruptive technologies. In an embedded case study of two disruptive material technologies, we find support for the cognitive and behavioral aspects of changes and reveal the contingent nature and unique character of technology introduction in the business-to-business context.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services
Contributors: Martinsuo, M., Ahvenniemi, O., Vaittinen, E.
Publication date: 2015

Host publication information

Title of host publication: 22nd EurOMA Conference : Operations management for sustainable competitiveness
Place of publication: Switzerland
Publisher: European Operations Management Association
Keywords: operations change, disruptive technology, product innovation

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Collective nonlinear optical effects in plasmonic nanohole ensembles of different rotational symmetries

We use cylindrical vector beams to investigate second-harmonic generation from rotationally symmetric arrangements of plasmonic nanoholes. The second-harmonic efficiency is shown to depend strongly on collective interactions between the nanoholes.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Photonics, Research group: Nonlinear Optics, University of Tübingen
Contributors: Bautista, G., Dreser, C., Zang, X., Kern, D., Kauranen, M., Fleischer, M.
Number of pages: 2
Publication date: 2018

Host publication information

Title of host publication: CLEO : QELS_Fundamental Science 2018
Publisher: The Optical Society; OSA
Article number: FW3G.3
ISBN (Electronic): 978-1-943580-42-2
Electronic versions: 
URLs: 

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Concentration and composition gradients of exhaust and non-exhaust particles near a major road

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Physics, Research area: Aerosol Physics, Helsinki Region Environmental Services Authority (HSY), Department of Environmental Sciences, Helsinki University, Metropolia University of Applied Science, Metropolia University of Applied Sciences, Atmospheric Composition Research, Finnish Meteorological Institute
Contributors: Niemi, J. V., Saarikoski, S., Pirjola, L., Taimisto, P., Pulkkinen, A., Yli-Tuomi, T., Lanki, T., Kousa, A., Enroth, J., Kuuluvainen, H., Rönkkö, T., Hillamo, R.
Publication date: 2015

Host publication information

Title of host publication: EAC 2015, European Aerosol Conference, 6-11 September, 2015, Milan, Italy

Bibliographical note

ISBN kysytty, HO.
Ei ole, HO.

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Consumers' Views on Eco-Friendliness as a Dimension of a High-Tech Brand

High-tech companies are facing the need to perform deeper analysis of how consumers view the eco-friendliness of their brands, in order to create green product and marketing strategies. The focus of this paper is to study whether consumers associate eco-friendliness with high-tech brands, and what kinds of consumers are most pro-environmental based on demographics. The key finding of this research is that consumers consider also eco‐friendly aspects when reflecting on high‐tech brands on four dimensions also used to measure general brand experience: the sensory, affective, behavioral and intellectual dimensions [1]. Demographically, women consider eco‐friendliness more in
association with high‐tech brands than men across all of the four brand experience dimensions. In addition, mature consumers consider on the intellectual and sensory brand dimensions more eco‐friendly aspects than young consumers. There are no statistically significant differences in the responses based on the educational background of the respondents.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Innovation and Technology Research
Contributors: Saari, U., Mäkinen, S., Alinikula, P.
Number of pages: 8
Pages: 1-8
Publication date: 17 Nov 2014

Host publication information

Title of host publication: Going Green - CARE INNOVATION 2014
Publisher: SAT Austrian Society for Systems Engineering and Automation
Article number: 067

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Creating sustainable value in manufacturing operations: the role of an external service provider

Manufacturing companies need to fulfill sustainability requirements in their operations. Previous research has not covered external service providers’ sustainability-oriented cooperation with manufacturing firms sufficiently. The purpose is to develop new knowledge on ways to create sustainable value as part of manufacturing operations, particularly in cooperation with an external service provider. We conducted a qualitative study with two companies and mapped the activities in sustainable value creation. The results reveal a strategic approach to sustainable value, creation of sustainability by continuous improvement and development projects, and enhanced sustainable value creation through an industrial symbiosis with the external service provider.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services
Contributors: Martinsuo, M., Kivilä, J., Heikkilä, J.
Publication date: 2015

Host publication information

Title of host publication: 22nd EurOMA Conference : Operations management for sustainable competitiveness
Place of publication: Switzerland
Publisher: European Operations Management Association
Keywords: Sustainability, Manufacturing, Service providers

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Customized service solutions for project business

Project-based firms are supplementing their technology-based offerings with services, to build continuity into their customer relationships and add customer value. Project-related services can be offered using multiple business model options. Where different customers may require customized service solutions, suppliers need to consider whether and how they can customize service-related offerings efficiently. The purpose of this study to increase understanding on customization and the use of customer information in project-related service design and delivery processes. We employed a qualitative multiple-case research design, to explore the customization and use of customer information in project deliveries. The results show that companies engage in additive and subtractive customization in their project-related services, despite their increasing pursuit of standardization. They also engage in resource intensive search for customer information, while remote monitoring is foreseen as a strong option for the future. The results illustrate the need for different approaches towards customization for different types of services and during the different stages of the project life cycle.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services
Contributors: Martinsuo, M., Momeni, K.
Number of pages: 21
Publication date: Aug 2015

Host publication information

Title of host publication: 23rd Nordic Academy of Management Conference 2015
Publisher: Nordic Academy of Management
Keywords: project business, services, customization, remote monitoring system

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Defining product end-of-life strategies in new product development.

New product development is about creating new offerings to the market and new business for the supplier. At the same time, it needs to consider the end-of-life options for the product, due to increasing legal and regulatory requirements towards eco-friendly product designs. Even if sustainability has become a relevant concern in product development, previous research does not sufficiently cover how end-of-life strategies can be taken into account in new product development processes. This study explores the ways in which environmentally conscious manufacturing firms consider end-of-life strategies in their product development processes. A pre-study with two companies and their external service provider is reported, covering the different practices for identifying end-of-life options and factors relevant in considering product end-of-life strategies during new product development. The results open up avenues for focused studies on the front end of innovation that is identified as the crucial phase for initiating material choices and other end-of-life considerations.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services
Contributors: Martinsuo, M., Sukanen, I., Kivilä, J.
Number of pages: 16
Publication date: Aug 2015

Host publication information

Title of host publication: 23rd Nordic Academy of Management Conference NFF 2015- Business in society : NFF 2015
Publisher: Nordic Academy of Management
Keywords: product end-of-life, end-of-life strategy, product development, sustainability

Bibliographical note

AUX=tta,"Sukanen, Ilmari"

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Developing commercialization plans through stakeholder interaction: Patterns identified from Public-Private Innovation Projects

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, University of Southern Denmark
Contributors: Höjbjerg Clarke, A., Rostgaard Evald, M., Aarikka-Stenroos, L.
Number of pages: 20
Publication date: 27 Aug 2015

Host publication information

Title of host publication: The 31st Annual IMP Conference and Doctoral Colloquium 2015, Kolding, Denmark.
Editors: Vagn Freytag, P., Höjbjerg Clarke, A.
Keywords: stakeholders, commercialization , innovation, Public sector, private

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Diesel engine exhaust particle measurements using a particle size magnifier (PSM)

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Physics, Research area: Aerosol Physics, Research group: The Instrumentation, Emissions, and Atmospheric Aerosols Group, Metropolia University of Applied Science, Metropolia University of Applied Sciences, Helsinki University
Contributors: Kuuluvainen, H., Karjalainen, P., Saukko, E., Nousiainen, P., Karhu, T., Pirjola, L., Keskinen, J., Rönkkö, T.
Publication date: 2015

Host publication information

Title of host publication: EAC 2015, European Aerosol Conference, 6-11 September, 2015, Milan, Italy

Bibliographical note

ISBN kysytty, HO.
Ei ole, HO.

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Different types of non-volatile nanoparticles in off-road diesel engine exhaust

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Physics, Research area: Aerosol Physics, Research group: The Instrumentation, Emissions, and Atmospheric Aerosols Group
Contributors: Kuuluvainen, H., Karjalainen, P., Saukko, E., Nilsson, O., Sirviö, K., Ovaska, T., Niemi, S., Keskinen, J., Rönkkö, T.
Publication date: 2015

Host publication information

Title of host publication: EAC 2015, European Aerosol Conference, 6-11 September, 2015, Milan, Italy

Bibliographical note

ISBN kysytty, HO.
Ei ole, HO.

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Emergence of relationship triads in construction project networks

Research is increasingly addressing attention to project networks, in terms of inter-organizational relationships. Very often, research is focused on customers and contractors at the center of the project networks and their strong dyadic relationships. Less attention has been paid to the non-central actors and triadic relationships, which might have significant role in project delivery and in the construction innovations. This research focuses on the emergence of relationship triad between contractor, supplier and designer. The goal of this research is to identify contractors’ motives to engage in triadic relationship, and practices to adopt contractor-supplier-designer triads in the construction project networks. Qualitative, exploratory research strategy is employed in the context of construction project networks, with contractors as adopters of relationship triads. Interviews are conducted with contractors, to discover the specifics of contractor-supplier-designer relationship triads in construction projects. The results indicate that contractors are motivated to enhance their dyadic relationships with suppliers and designer, but they are also motivated and capable to adopt triadic relationships with these actors. The research contributes by showing that relationship triads promote development and innovations in construction projects. As key contributions, this research suggests practices and project conditions through which beneficial relationship triads can be adopted.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services
Contributors: Sariola, R.
Number of pages: 13
Pages: 1-13
Publication date: 2015

Host publication information

Title of host publication: 23rd Nordic Academy of Management conference, NFF, 12-14 August 2015, Copenhagen, Denmark
Place of publication: Copenhagen, Denmark
Publisher: Nordic Academy of Management

Publication series

Name: Nordic Academy of Management Conference

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Enablers and barriers of inter-organizational network’s formation for new market entry: case Finnish maritime industry

Failures of networking attempts are rarely reported in the literature. This study examined an intentionally formed, non-successful case network in its formation phase by using Lowensberg’ holistic conceptual model for strategic alliance issues that links six organizational theories to the network management processes. This empirical study of a whole network at network level involved one survey (n=20) and 61 semi-structured interviews in more than 20 Finnish maritime industry organizations and observations in six workshops, while the network aimed at joint market entry. The paper presents 11 enablers
and six barriers discovered in the networks formation phase. The findings contribute to understanding the enablers and barriers in network formation affecting failure, especially the significance of network strategy formulation and communication to network organizations in intentionally formed networks. Presenting conclusions for academics and managers, the paper fulfils the gap in the literature of whole networks, particularly their failures in their formation
phase.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Pori Department, Research group: Business Ecosystems, Networks and Innovations
Contributors: Suominen, A.
Number of pages: 30
Publication date: 3 Jul 2015

Host publication information

Title of host publication:  31st EGOS Colloquium, General Theme, Organizations and the Examined Life: Reason, Reflexivity and Responsibility, July 2–4, 2015 Athens, Greece
Publisher: SAGE Publications

Publication series

Name: Organization Studies
ISSN (Print): 0170-8406
ISSN (Electronic): 1741-3044
ASJC Scopus subject areas: Social Sciences(all), Business, Management and Accounting(all)
Keywords: network strategy, network formation, network failure, whole network, market entry

Bibliographical note

xoa Enablers and barriers of inter-organizational networks formation 14.7.2015 ei tarkistettu, siirretty kohdasta additional files

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Enhancing the supplier’s third-party relationships in construction projects

Project delivery involves networks of customers, contractors, suppliers, and various third parties. Previous research has focused on contractual relationships in the direct supply chains, with less attention to third parties and non-contractual relationships. This study develops and tests a framework of relationship strength and its antecedents in the non-contractual relationship of component suppliers and designers as third parties. The intent is to identify factors relevant to enhancing the supplier’s third party relationships. The results reveal the supplier’s activeness and technical capability as antecedents to trust, and supplier’s technical capability and supplier-designer cooperation outside projects as antecedents to commitment.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services
Contributors: Sariola, R., Martinsuo, M.
Number of pages: 21
Publication date: Jun 2015

Host publication information

Title of host publication: The Bartlett IRNOP 2015 : International Research Network on Organizing by Projects Conference
Publisher: IRNOP
Keywords: project networks, supplier relationships, relationship strength

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Enterprise architecture and organizational reform: a project debrief

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Industrial and Information Management, Research group: Business Data Research Group
Contributors: Dang, D., Pekkola, S.
Number of pages: 16
Publication date: 20 Jul 2017

Host publication information

Title of host publication: Proceedings the 21st Pacific Asian Conference on Information Systems 2017 (PACIS’2017) : Langkawi, Malay, 16-20 July, 2017
Publisher: Association for Information Systems AIS

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Enterprise architecture as strategy, practice, or approach

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Information Management and Logistics, Research group: Novi
Contributors: Pekkola, S.
Publication date: 13 Oct 2015

Host publication information

Title of host publication: 4th Innovation in Information Infrastructures (III) Workshop
Place of publication: Warwick, UK
Publisher: University of Warwick

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Erosion testing of filled and/or reinforced vinyl ester composites in water medium at elevated temperature

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Materials Science, Research group: Plastics and Elastomer Technology, Outotec Research Center
Contributors: Siljander, S., Kiviniemi, M., Sarlin, E., Lindgren, M., Suihkonen, R., Vuorinen, J.
Number of pages: 10
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the 20th International Conference on Composite Materials

Bibliographical note

ISBN kysytty, ei löydy / TL

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Exhaust Particles and NOx Emission Factors of a Modern Heavy Duty Truck equipped with the SCR in Real-world Driving Conditions

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Physics, Research area: Aerosol Physics, Research group: The Instrumentation, Emissions, and Atmospheric Aerosols Group, Metropolia University of Applied Sciences
Contributors: Saari, S., Karjalainen, P., Pirjola, L., Ntziachristos, L., Keskinen, J., Rönkkö, T.
Publication date: Sep 2015

Host publication information

Title of host publication: EAC 2015, European Aerosol Conference, 6-11 September, 2015, Milan, Italy

Bibliographical note

ISBN kysytty, HO.
Ei ole, HO.

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Feasibility of electric buses in public transport

This study examines the economic feasibility of electric buses in a mid-sized city, where public transport is currently organized with buses only. The difference in lifetime cost of electric buses and diesel buses was calculated with the chosen parameters that were selected after careful background analysis. A viable business case can be created when the battery and the charging infrastructure are selected shrewdly. The electricity is much cheaper fuel than diesel but with the current battery technologies and battery prices the significant cost from operating an e-bus comes from the wear of the battery. Two types of Li-ion batteries were compared, LFP (Lithium Iron Phosphate) and LTO (Lithium Titanate). Also different conductive opportunity charging strategies were examined: 1. Charging at the depot. 2. Charging at the end stop(s). 3.
Charging at the line stops.
The round trip line length assessed was 20 km. Calculations show that the LTO buses and a fast charger at the end stop complemented with low power overnight chargers at the depot is the best investment combination based on the given assumptions. The 200 kW charging power is sufficient to ensure the charging in the normal end stop breaks. Due to a longer cycle life the wear cost per km was lower for LTO than for LFP. LTO is also better adapted for fast charging. The battery size has to be sufficient compared to the required driving range during peak consumption, to the charging current and to the performance requirements of the e-bus. Oversizing the battery has some positive effects (improved cycle life, less heating and better flexibility) but the negative effects were estimated to be more significant (higher investment cost, increased weight and space requirement).

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Electrical Engineering, Research area: Power engineering
Contributors: Vilppo, O., Markkula, J.
Number of pages: 9
Publication date: 3 May 2015

Host publication information

Title of host publication: EVS28 28th International Electric Vehicle Symposium and Exhibition

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Gas and particle composition and properties of photochemically aged ship plumes using chemical ionization and aerosol mass spectrometry

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Physics, Research area: Aerosol Physics, University of Gothenburg
Contributors: Psichoudaki, M., Faxon, C., Kuuluvainen, H., Thomson, E. S., Eriksson, A., Mallqvist, J., Pettersson, J., Hallquist, Å., Kristensson, A., Hallquist, M.
Publication date: 2015

Host publication information

Title of host publication: EAC 2015, European Aerosol Conference, 6-11 September, 2015, Milan, Italy

Bibliographical note

ISBN kysytty, HO.
Ei ole, HO.

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Generation of characteristic traffic emission aerosol in particulate filter collection efficiency tests

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Physics, Research area: Aerosol Physics, Urban circular bioeconomy (UrCirBio), VTT Technical Research Centre of Finland
Contributors: Saari, S., Karjalainen, P., Kalliohaka, T., Taipale, A., Rönkkö, T.
Publication date: Oct 2015

Host publication information

Title of host publication: The 11th International Conference on Industrial Ventilation, Shanghai, China

Bibliographical note

ISBN kysytty, HO.
Ei ole, HO.

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Generation of Characteristic Traffic Emission Aerosol in Particulate Filter Collection Efficiency Tests

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Physics, Research area: Aerosol Physics, VTT Technical Research Centre of Finland
Contributors: Saari, S., Karjalainen, P., Kalliohaka, T., Taipale, A., Rönkkö, T.
Publication date: Sep 2015

Host publication information

Title of host publication: EAC 2015, European Aerosol Conference, 6-11 September, 2015, Milan, Italy

Bibliographical note

ISBN kysytty, HO.
Ei ole, HO.

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

High-temperature sliding wear behaviour of thermally sprayed Cr3C2-based coatings

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Materials Science, Research group: Surface Engineering, Univ Modena & Reggio Emilia, Universita di Modena e Reggio Emilia, Dept Engn Enzo Ferrari, University of Modena and Reggio Emilia, Dipartimento di Ingegneria Enzo Ferrari
Contributors: Matikainen, V., Bolelli, G., Koivuluoto, H., Sassatelli, P., Lusvarghi, L., Vuoristo, P.
Number of pages: 10
Publication date: 2016

Host publication information

Title of host publication: Proceedings of The 17th Nordic Symposium on Tribology - NORDTRIB 2016
Keywords: Thermal spraying, sliding wear, Cr3C2, HVOF, HVAF
Electronic versions: 

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Identification of fundamental requirements for ideal metamodeling framework in additive manufacturing

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Mechanical Engineering and Industrial Systems, Research area: Manufacturing and Automation
Contributors: Mokhtarian, H., Coatanea, E., Paris, H., Vihinen, J.
Number of pages: 3
Pages: 29-31
Publication date: 2017

Host publication information

Title of host publication: Proceedings of the 2nd Annual SMACC Research Seminar 2017
Editors: Aaltonen, J., Virkkunen, R., Koskinen, K. T., Kuivanen, R.
ISBN (Print): 978-952-15-4040-0

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Improving project control by combining earned value analysis and automatic data collection

Efficient control is critical for project success. One of the most widely discussed project control methods is earned value analysis (EVM). The accuracy of EVM calculations can be improved by combining it with automatic data collection (ADC). This paper analyzes the possibilities of combining EVM and ADC, and the main benefits and challenges related to that. A literature review was conducted to answer these questions. The study demonstrates how the problems related to the evaluation of activity progress have received surprisingly little research focus, and how ADC could be utilized to improve this area of EVM. The benefits of ADC are also not limited to just EVM; despite the choice of a project control methodology, ADC can be utilized to evaluate project progress in a continuous and more accurate way. Finally, it is demonstrated how even the “ADC-enhanced EVM” doesn’t provide an adequate image of project status alone; EVM has to be combined with other project control methodologies. Based on the literature review, several areas for further research are also proposed.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services
Contributors: Vuorinen, L., Sariola, R.
Number of pages: 17
Pages: 1
Publication date: 2015

Host publication information

Title of host publication: International Research Network in Organizing by Projects Conference 2015 : IRNOP
Place of publication: London, U.K.

Bibliographical note

Sariola vastannut: ei isbn

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Improving Recovery Boiler Availability through Understanding Fume Behavior

Unexpected recovery boiler shutdowns are rare, but they can cost millions of dollars in lost income. Sometimes the inorganic compounds in black liquor can cause sudden fouling or plugging problems that could not be predicted beforehand. The ash particles can be divided into two main types and size classes: carryover and fume. This paper focuses on the smaller fume particles that form through the condensation of alkali metal vapors, and that deposit via different mechanisms than carryover. The location of fume deposition depends on several factors, such as flue gas and superheater temperatures, black liquor composition, and the flow field in the boiler.

This paper presents results obtained with a computational method that simulates fume formation in recovery boilers. The results in this paper focus on the effect of black liquor composition and elemental release on fume behavior, and the paper suggests how these observations should be taken into account when designing new boilers or retrofits. Moreover, the paper introduces the possible applications of the modeling method. These include, for example, troubleshooting of fouling problems in existing boilers, designing superheater configurations for new boilers, and positioning soot blowers.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Chemistry and Bioengineering, Research group: Power Plant and Combustion Technology, Valmet Technologies Oy
Contributors: Leppänen, A., Välimäki, E.
Number of pages: 11
Publication date: 2015

Host publication information

Title of host publication: TAPPI PEERS Conference Proceedings, October 25-28, 2015
Place of publication: Atlanta, Georgia
Publisher: TAPPI

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Initiation processes and initiation contributors illustrated by Norwegian-South Korean business relationships

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Norwegian University of Science and Technology, NTNU
Contributors: Aarikka-Stenroos, L., Aaboen, L., Rolfsen, A.
Number of pages: 28
Publication date: 27 Aug 2015

Host publication information

Title of host publication: The 31st IMP Conference 2015, Kolding, Denmark.
Place of publication: Kolding, Denmark
Editors: Vagn Freytag, P., Höjbjerg Clarke, A.
Keywords: initiation, international business, marketing

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Institutionalizing a service innovation in complex networks: The case of developing and diffusing electronic prescription in Finland.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, University of Turku, Turku School of Economics, Deloitte
Contributors: Jaakkola, E., Aarikka-Stenroos, L., Salmivalli, L.
Number of pages: 12
Publication date: 27 Aug 2015

Host publication information

Title of host publication: The 31st Annual IMP Conference and Doctoral Colloquium 2015, Kolding, Denmark.
Editors: Vagn Freytag, P., Höjbjerg Clarke, A.
Keywords: Public sector, Innovation, Service providers

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Knowledge Management operationalization – how it differs in large enterprises and SMEs in Finland

Information and knowledge are essential resources for businesses to maintain their competitiveness and to constantly develop further. Knowledge Management (KM) enables companies to develop their activities by having the right information at the right time, as well as by offering the tools to manage the skills and knowledge of the personnel. The aim of this paper is to empirically analyze how KM is operationalized in large and small and medium sized companies in Finland, and furthermore, what kinds of challenges the companies face in KM operationalization. The empirical study was carried out in spring 2014 as a web-based questionnaire survey and structured interviews. Results of the study provide direction for the development directions of KM in Finnish companies.

General information

Publication status: Unpublished
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Information Management and Logistics, Research group: Novi
Contributors: Väyrynen, H., Helander, N.
Number of pages: 27
Pages: 1-27
Publication date: Aug 2015

Host publication information

Title of host publication: 23rd Nordic Academy of Management Conference : NFF 2015
Publisher: Nordic Academy of Management
Keywords: Knowledge Management, survey, large and small and medium sized companies

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Long-term effects of purchasing: fact or fiction?

Long-term approach to evaluate the performance of purchasing over its entire life-cycle ischallenging. It is especially hard to determine the relationship between the early purchasing actions and the long-term consequences of acquiring complex product-service combinations with a long life-cycle. We carried out an interview study with four companies to explore how the long-term purchasing perspective is perceived in different business environments. The results indicate that practices to create long-term consequences of purchasing activities take many different forms. The study highlights practices of the purchasing function when aiming at creating long-term effects of purchasing.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services
Contributors: Heikkilä, J., Jääskeläinen, A., Thitz, O.
Publication date: 2016

Host publication information

Title of host publication: Proceedings of 25th IPSERA 2016 conference, 20-23.3.2016, Dortmund, Germany.
Publisher: International Purchasing and Supply Education and Research Association IPSERA

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Measurements of particulates and gas phase precursors emissions from fresh ship plumes during the Big Glenn 2014 Campaign

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Physics, Research area: Aerosol Physics, University of Gothenburg
Contributors: Kuuluvainen, H., Faxon, C., Psichoudaki, M., Thomson, E. S., Eriksson, A., Kristensson, A., Svenningson, B., Mellqvist, J., Salo, K., Hallquist, M.
Publication date: 2015

Host publication information

Title of host publication: EAC 2015, European Aerosol Conference, 6-11 September, 2015, Milan, Italy

Bibliographical note

ISBN kysytty, HO.
Ei ole, HO.

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Modelling new particle formation and growth using combined power law and log-normal distribution model

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Physics, Research area: Aerosol Physics
Contributors: Olin, M., Dal Maso, M.
Publication date: 8 Sep 2015

Host publication information

Title of host publication: EAC 2015, European Aerosol Conference
Place of publication: Milan, Italy
Publisher: Italian Aerosol Society
ASJC Scopus subject areas: Pollution
URLs: 

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Moving manufacturing back: a content-based literature review

The purpose of this research is to systematically review and analyze the state-of-the-art of research on the backshoring, reshoring, and insourcing of manufacturing, published in peer-reviewed international scientific journals. We identify 21 articles from 2005 to 2015. The content analysis identifies 23 factors that influence the decision to move manufacturing back, and which we categorize in 8 clusters. We also analyze the content with respect to research methodology, industry type, and firm size. Furthermore, we provide suggestions for further research on the phenomenon of moving manufacturing back in a research agenda.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, University of Southern Denmark, Lund University
Contributors: Stentoft, J., Olhager, J., Heikkilä, J., Thoms, L.
Publication date: Jun 2015

Host publication information

Title of host publication: 22nd EurOMA Conference : Operations management for sustainable competitiveness
Place of publication: Neuchatel, Switzerland

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Network archetypes in the network formation phase - case new market entry of Finnish maritime network

A theory of co-opetition in supply networks with specified four archetypes has been proposed in the earlier literature. As the model is not yet exhaustive, this study examines it in a case network in its formation phase. The findings bring new contribution to understanding the model of supply network archetypes and the utility of its four interrelated elements in forming strategic supply networks. The results provide novel evidence that competing situation within network and network organizations’ co-opetitive or non-collaborative strategies with competitors, are essential information when forming a network, determining its network level objectives and governance.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Pori Department, Research group: Business Ecosystems, Networks and Innovations
Contributors: Suominen, A., Breite, R.
Number of pages: 10
Publication date: 29 Jun 2015

Host publication information

Title of host publication: 22nd International Annual EurOMA Conference Neuchâtel, Switzerland 28 June – 1 July 2015
ASJC Scopus subject areas: Business, Management and Accounting(all)
Keywords: supply network archetype, co-opetition, network governance model

Bibliographical note

xoa

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Non-resonant enhancement of second-harmonic generation from metal nanoislands coated with dielectric layers

Second-harmonic generation from gold nanoisland films increases with the dielectric TiO2 coating thickness. This occurs although the plasmon resonance shifts away from the second-harmonic wavelength, due to enhanced non-resonant local fields at the fundamental wavelength.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Photonics, Research group: Nonlinear Optics, Peter The Great St. Petersburg Polythechic University, University of Eastern Finland, Peter the Great St. Petersburg Polytechnic University
Contributors: Koskinen, K., Scherbak, S., Chervinskii, S., Lipovskii, A., Kauranen, M.
Number of pages: 2
Publication date: 2018

Host publication information

Title of host publication: CLEO : QELS_Fundamental Science 2018
Publisher: OSA
Article number: JTu2A.134
ISBN (Electronic): 978-1-943580-42-2
Electronic versions: 
URLs: 

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Physical and chemical properties of real exhaust particle emissions from city buses

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Physics, Research area: Aerosol Physics, Metropolia University of Applied Science, Metropolia University of Applied Sciences, Helsinki University, Helsinki Region Environmental Services Authority (HSY), Department of Environmental Sciences, Atmospheric Composition Research, Finnish Meteorological Institute
Contributors: Pirjola, L., Dittrich, A., Niemi, J. V., Saarikoski, S., Malinen, A., Kuuluvainen, H., Wihersaari, H., Timonen, H., Kousa, A., Rönkkö, T., Hillamo, R.
Publication date: 2015

Host publication information

Title of host publication: EAC 2015, European Aerosol Conference, 6-11 September, 2015, Milan, Italy

Bibliographical note

AUX=fys,"Wihersaari, Hugo"
Ei ISBN-numeroa

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Project control toward lifecycle value at the front end of delivery projects

The lifecycle value of delivery projects is defined in the early phases of the project, and it implies benefits both for the supplier and the customer. Companies increasingly expect value beyond tangible technologies, for example through project-related services. This study develops new knowledge on creating lifecycle value in delivery projects and how lifecycle value creation is controlled in the early phases of the project. An embedded case study with two delivery cases in an engineering firm is conducted, to map the means of controlling the creation of lifecycle value. The results demonstrate that suppliers promote and control lifecycle value particularly through sales argumentation, relationship management, and contracting processes. We contribute by identifying and categorizing the relevant dimensions of project control used for promoting lifecycle value at the front end of delivery projects. This pilot study will pave way toward a broader multiple-case study covering different companies and delivery project types.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services
Contributors: Martinsuo, M., Vuorinen, L.
Number of pages: 21
Publication date: Aug 2015

Host publication information

Title of host publication:  23rd Nordic Academy of Management Conference : NFF 2015
Publisher: Nordic Academy of Management
Keywords: delivery project, lifecycle value, project control, front end

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Quantitative structure tree models from terrestrial laser scanner data

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Mathematics, Research group: MAT Inverse Problems
Contributors: Raumonen, P. A.
Number of pages: 3
Pages: 32-34
Publication date: 2015

Host publication information

Title of host publication: Proceedings of SilviLaser 2015 : 14th conference on Lidar Applications for Assessing and Managing Forest Ecosystems

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Reducing uncertainties in above-ground biomass estimates using terrestrial laser scanning

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Mathematics, Research group: MAT Inverse Problems, Univ Melbourne, University of Melbourne, Melbourne Sch Land & Environm
Contributors: Calders, K., Burt, A., Newnham, G., Disney, M., Murphy, S., Raumonen, P., Herold, M., Culvenor, D., Armston, J., Avitabile, V., Kaasalainen, M.
Number of pages: 3
Pages: 197-199
Publication date: 2015

Host publication information

Title of host publication: Proceedings of SilviLaser 2015 : 14th conference on Lidar Applications for Assessing and Managing Forest Ecosystems

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Remote monitoring systems as enablers for project-related services

Project-based firms complement their system deliveries with services. Remote monitoring assists these firms in monitoring the use of the installed base of equipment and offering services that meet the customers’ needs. This paper analyses how remote monitoring systems can enable project-related services. A qualitative study was conducted at three engineering firms that provide technology-based solutions and services for a global installed base of equipment. The paper demonstrates different value drivers for using remote monitoring systems, discusses opportunities for utilizing remote data to improve project-related services and enablers, and describes barriers in implementing remote monitoring systems. Ultimately, the research highlights the role of remote monitoring systems in enabling services during the project lifecycle. Project-based firms complement their system deliveries with services. Remote monitoring assists these firms in monitoring the use of the installed base of equipment and offering services that meet the customers’ needs. This paper analyses how remote monitoring systems can enable project-related services. A qualitative study was conducted at three engineering firms that provide technology-based solutions and services for a global installed base of equipment. The paper demonstrates different value drivers for using remote monitoring systems, discusses opportunities for utilizing remote data to improve project-related services and enablers, and describes barriers in implementing remote monitoring systems. Ultimately, the research highlights the role of remote monitoring systems in enabling services during the project lifecycle.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services
Contributors: Momeni, K., Martinsuo, M.
Number of pages: 23
Publication date: Jun 2015

Host publication information

Title of host publication: IRNOP 2015 : International Research Network on Organizing by Projects Conference
Publisher: IRNOP
Keywords: Project business, Services , Remote monitoring systems

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Resonant harmonic generation in AlGaAs nanoantennas using cylindrical vector beams

We use second- and third-harmonic generation with cylindrical vector beams to investigate AlGaAs nanodisks. The nonlinear emission is found to depend strongly on the interplay between tensorial nonlinearities, focal-field symmetries and resonant multipolar excitations.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Photonics, Research group: Nonlinear Optics, Australian National University
Contributors: Camacho-Morales, R., Bautista, G., Zang, X., Xu, L., Turquet, L., Miroshnichenko, A., Lamprianidis, A., Rahmani, M., Neshev, D. N., Kauranen, M.
Number of pages: 2
Publication date: 2018

Host publication information

Title of host publication: CLEO : QELS_Fundamental Science 2018
Publisher: The Optical Society; OSA
Article number: FF1E.6
ISBN (Electronic): 978-1-943580-42-2
Electronic versions: 
URLs: 

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Review on mobility as a service in scientific literature

Our current private car based transport system is inefficient and unsustainable. The Mobility as a Service (MaaS) model is offering a solution by combining public and private transport modes and aiming to provide seamless trips over one interface. This study summarises the current state of the art of MaaS research by analysing scientific research papers. Overall, 16 MaaS-related documents in Scopus and ScienceDirect databases were recognised as relevant for this study. The relevant literature was divided into three groups according to the topics of the studies. The most significant observations are presented based on the
literature and future research needs are discussed. Currently, there are relatively few MaaS-related scientific studies published, but the issue is topical as most of the relevant studies were published in 2016 or 2017. This study helps the MaaS stakeholders and the scientific community to recognize the current state of the art and where to focus in future.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Civil Engineering
Contributors: Utriainen, R., Pöllänen, M.
Number of pages: 15
Pages: 141-155
Publication date: 2017

Host publication information

Title of host publication: Conference Proceedings 1st International Conference on Mobility as a Service : ICoMaaS, Tampere 28.-29.11.2017
Publisher: Tampere University of Technology
Article number: 15

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Riding for a fall in outsourced ISD: Transferring knowledge between onshore vendor and offshored unit

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Information Management and Logistics, Research group: Novi
Contributors: Alanne, A., Pekkola, S.
Publication date: 18 Feb 2015

Host publication information

Title of host publication: 9th Global Sourcing Workshop 2015 : La Thuile, Italy, February 18-21, 2015

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Suomessa markkinoilla olevien kalsiumsilikaattilevyjen rakennusfysikaaliset materiaaliominaisuudet


General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Civil Engineering, Research group: Building Physics, Laboratory of Civil Engineering
Contributors: Tuominen, E., Vainio, M., Vinha, J.
Number of pages: 6
Pages: 455-460
Publication date: 24 Oct 2017

Host publication information

Title of host publication: Rakennusfysiikka 2017. Uusimmat tutkimustulokset ja hyvät käytännön ratkaisut : 24.-26.10.2017, Tampere
Volume: 2
Place of publication: Tampere
Publisher: Tampereen teknillinen yliopisto, Rakennustekniikka, Rakennusfysiikka
Editors: Vinha, J., Kivioja, H.
ISBN (Print): 978-952-15-4023-3

Publication series

Name: Tampereen teknillinen yliopisto. Rakennustekniikka. Rakennusfysiikka.

Bibliographical note

INT=rak,"Vainio, Maarit"

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Terrestrial LiDAR and 3D tree Quantitative Structure Model for quantification of aboveground biomass loss from selective logging in a tropical rainforest of Peru

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Mathematics, Research group: MAT Inverse Problems, Wageningen Univ, Wageningen University & Research Center, Wageningen University and the UNESCO-IHE Institute for Water Education, Delft, The Netherlands, 18.10.2013, Center for International Forestry Research
Contributors: Gonzalez de Tanago, J., Bartholomeus, H., Joseph, S., Herold, M., Avitabile, V., Goodman, R., Raumonen, P., Burt, A.
Number of pages: 3
Pages: 119-121
Publication date: 2015

Host publication information

Title of host publication: Proceedings of SilviLaser 2015 : 14th conference on Lidar Applications for Assessing and Managing Forest Ecosystems

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

The effect of physical adhesion promotion treatments on interfacial adhesion in cellulose-epoxy composite

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Materials Science, Research group: Plastics and Elastomer Technology, Research group: Paper Converting and Packaging
Contributors: Siljander, S., Lehmonen, J., Tanaka, A., Ketoja, J., Heikkilä, P., Lahti, J., Sarlin, E., Vuorinen, J.
Number of pages: 10
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the 20th International Conference on Composite Materials

Bibliographical note

ISBN- tai ISSN-numeroa kysytty, ei löydy

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

The Role of Customer Experience in Value Creation in Business-to-Business Context

The Role of Customer Experience in Value Creation in Business-to-Business Context

General information

Publication status: Unpublished
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Information Management and Logistics, Research group: Novi, Tampere University of Technology, Tampere University of Applied Science
Contributors: Väyrynen, H., Vasell, T., Helander, N., Boedeker, M., Andersson, T.
Number of pages: 1
Pages: 146
Publication date: 12 Aug 2015

Host publication information

Title of host publication: 23rd Nordic Academy of Management Conference : NFF 2015
Publisher: Nordic Academy of Management
Article number: 24.02

Bibliographical note

AUX=tlo,"Vasell, Tytti"

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

The role of the purchasing function in non-financial value creation

Costs and transactions have been highlighted in the earlier research and practice around purchasing and supply management (PSM). This study investigates in-depth the role of the PSM function in creating non-financial value for the buying company and its customers. Interview study was used to examine four large organizations both in service and manufacturing industries. The findings indicate that relationship value gives a strong potential for developing successful buyer-seller relationships. Service support and personal interaction arise as important differentiators in building the relationships. Key differences across the different contexts existent in this study are also provided.

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services
Contributors: Jääskeläinen, A., Thitz, O., Heikkilä, J.
Publication date: 2016

Host publication information

Title of host publication: 25th Proceedings of IPSERA 2016 conference, : 20-23.3.2016, Dortmund, Germany.

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Traceability of essential climate variables through forest stand reconstruction with terrestrial laser scanning

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Mathematics, Research group: MAT Inverse Problems
Contributors: Calders, K., Disney, M., Nightingale, J., Origo, N., Barker, A., Raumonen, P. A., Lewis, P., Burt, A., Brennan, J., Fox, N.
Number of pages: 3
Pages: 122-124
Publication date: 2015

Host publication information

Title of host publication: Proceedings of SilviLaser 2015 : 14th conference on Lidar Applications for Assessing and Managing Forest Ecosystems

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Triboelectric charging of fungal spores during resuspension and rebound

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Physics, Research area: Aerosol Physics, Research group: The Instrumentation, Emissions, and Atmospheric Aerosols Group
Contributors: Kuuluvainen, H., Saari, S., Mensah-Attipoe, J., Pasanen, P., Reponen, T., Keskinen, J.
Publication date: 2015

Host publication information

Title of host publication: EAC 2015, European Aerosol Conference, 6-11 September, 2015, Milan, Italy

Bibliographical note

ISBN kysytty, HO.
Ei ole, HO.

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Tunable second-harmonic generation in a single nanostructure

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Physics, Research area: Optics, Research group: Nonlinear Optics, Department of Micro- and Nanosciences, Aalto University, Aalto University, Department of Applied Physics and Nanomicroscopy Center
Contributors: Turquet, L., Bautista, G., Kakko, J., Karvonen, L., Dhaka, V., Chen, Y., Jiang, H., Huhtio, T., Lipsanen, H., Kauranen, M.
Number of pages: 2
Publication date: 2015

Host publication information

Title of host publication: The Eleventh Finland-Japan Joint Symposium on Optics in Engineering

Bibliographical note

ISBN kysytty, HO.

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Two models for hydraulic cylinder

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Mechanical Engineering and Industrial Systems, Research area: Applied Mechanics, Department of Civil Engineering, Research group: Structural Mechanics
Contributors: Ylinen, A., Kouhia, R., Mäkinen, J.
Number of pages: 2
Pages: 115-116
Publication date: 2015

Host publication information

Title of host publication: 2nd International Conference on Multi-Scale Computational Methods for Solids and Fluids : ECCOMAS MSF 2015
Place of publication: Sarajevo
Editors: Ibrahimbegović, A., Ademović, N., Ilić-Georgijević, E., Serdarević, A., Hrasnica, M., Dolarević , S.
Keywords: computational methods, Multi-Scale, Solid

Bibliographical note

Ei löydy isbn

ORG=mei,0.5
ORG=rak,0.5

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Varmuuden kohdentaminen geotekniikassa, miten Eurokoodeja voisi kehittää?

General information

Publication status: Published
MoE publication type: D3 Professional conference proceedings
Organisations: Department of Civil Engineering, Research group: Foundation Structures
Contributors: Länsivaara, T.
Publication date: 2015

Host publication information

Title of host publication: Geotekniikan päivä 2015
Publisher: SGY

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

1180 nm GaInNAs quantum well based high power DBR laser diodes

We report state-of-the-art results for 1180nm (narrow linewidth) laser diodes based on GaInNAs quantum wells and show results for ridge waveguide DBR laser diode including its reliability tests. Manuscript demonstrates 500 mW output power in continuous-wave operation at room temperature, wide single mode tuning region and narrow linewidth operation. Devices reached narrow linewidth operation (>250 kHz) across their operation band.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Photonics, Optoelectronics Research Centre, Tampere University of Technology
Contributors: Viheriälä, J., Aho, A., Virtanen, H., Koskinen, M., Dumitrescu, M., Guina, M.
Number of pages: 6
Publication date: 24 Feb 2017

Host publication information

Title of host publication: High-Power Diode Laser Technology XV
Publisher: SPIE
Editor: Zediker, M. S.
Article number: 100860K

Publication series

Name: Proceedings of SPIE
Publisher: SPIE
Volume: 10086
ISSN (Print): 0277-786X
ISSN (Electronic): 1996-756X
ASJC Scopus subject areas: Physics and Astronomy (miscellaneous)
Keywords: DBR laser, dbr, 1180nm, 1178nm, 1154nm, SHG

Bibliographical note

INT=fot,"Koskinen, Mervi"

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

1180nm VECSEL with 50 W output power

We report on the development of a high-power vertical-external-cavity surface-emitting laser (VECSEL) emitting around 1180 nm. The laser emitted 50 W of output power when the mount of the gain chip was cooled to -15°C. The output power was measured using a 97% reflective cavity end-mirror. The VECSEL was arranged to form an I-shaped cavity with a length of ∼100 mm; the gain chip and a curved dielectric mirror (RoC=150) acting as cavity end mirrors. The gain chip was grown by molecular beam epitaxy (MBE) and incorporated 10 GaInAs/GaAs quantum wells. For efficient heat extraction, the chip was capillary bonded to a diamond heat spreader which was attached to a TEC-cooled copper mount. The maximum optical-to-optical conversion efficiency of 28% was achieved for 42 W of output power and -15°C mount temperature.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Optoelectronics Research Centre, Research group: Semiconductor Technology and Applications, Frontier Photonics
Contributors: Kantola, E., Leinonen, T., Ranta, S., Tavast, M., Penttinen, J., Guina, M.
Publication date: 2015

Host publication information

Title of host publication: Proceedings of SPIE - The International Society for Optical Engineering
Volume: 9349
Publisher: SPIE
Article number: 93490U
ISBN (Print): 9781628414394
ASJC Scopus subject areas: Applied Mathematics, Computer Science Applications, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Condensed Matter Physics
Keywords: continuous wave, frequency doubling, heat management, high power, infrared, power scaling, SDL, VECSEL
Source: Scopus
Source ID: 84925666801

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

1.3μm U-bend traveling wave SOA devices for high efficiency coupling to silicon photonics

We present a U-bend design for traveling wave III-V gain devices, such as semiconductor optical amplifiers and laser diodes. The design greatly simplifies the butt-coupling between the III-V chip and silicon-on-insulator photonic circuit by bringing the I/O ports on one facet. This removes the need for precise dimension control otherwise required for 2-side coupling, therefore increasing the yield of mounted devices towards 100%. The design, fabrication and characterization of the U-bend device based on Euler bend geometry is presented. The losses for a bend with a minimum bending radius of 83 μm are 1.1 dB. In addition, we present an analysis comparing the yield and coupling losses of the traditionally cleaved devices with the results that the Euler bend approach enable, with the final conclusion that the yield is improved by several times while the losses are decreased by several dB.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Physics, VTT Technical Research Centre of Finland
Contributors: Viheriälä, J., Tuorila, H., Zia, N., Cherchi, M., Aalto, T., Guina, M.
Publication date: 2019

Host publication information

Title of host publication: Silicon Photonics XIV
Publisher: SPIE, IEEE
Editors: Reed, G. T., Knights, A. P.
Article number: 109230E
ISBN (Electronic): 9781510624887

Publication series

Name: Proceedings of SPIE - The International Society for Optical Engineering
Volume: 10923
ISSN (Print): 0277-786X
ISSN (Electronic): 1996-756X
ASJC Scopus subject areas: Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Computer Science Applications, Applied Mathematics, Electrical and Electronic Engineering
Keywords: Coupling losses, Hybrid integration, III-V, Semiconductor optical amplifiers, Silicon-on-insulator

Bibliographical note

jufoid=71479

Source: Scopus
Source ID: 85065404814

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

1.55-μm wavelength wafer-fused OP-VECSELs in flip-chip configuration

Optically-pumped vertical external cavity surface emitting lasers (VECSELs) based on flip-chip gain mirrors emitting at the 1.55-μm wavelength range are reported. The gain mirrors employ wafer-fused InAlGaAs/InP quantum well heterostructures and GaAs/AlAs distributed Bragg reflectors, which were incorporated in a linear and a V-cavity configurations. A maximum output power of 3.65 W was achieved for a heatsink temperature of 11°C and employing a 2.2% output coupler. The laser exhibited circular beam profiles for the full emission power range. The demonstration represents more than 10-fold increase of the output power compared to state-of-the-art flip-chip VECSELs previously demonstrated at the 1.55-μm wavelength range, and opens a new perspective for developing practical VECSEL-based laser system for applications such as LIDAR, spectroscopy, communications and distributed sensing.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Physics, CRPP, LakeDiamond SA
Contributors: Mereuta, A., Nechay, K., Caliman, A., Suruceanu, G., Gallo, P., Guina, M., Kapon, E.
Publication date: 2019

Host publication information

Title of host publication: Vertical External Cavity Surface Emitting Lasers (VECSELs) IX
Publisher: SPIE, IEEE
Editor: Keller, U.
Article number: 1090103
ISBN (Electronic): 9781510624443

Publication series

Name: Proceedings of SPIE - The International Society for Optical Engineering
Volume: 10901
ISSN (Print): 0277-786X
ISSN (Electronic): 1996-756X
ASJC Scopus subject areas: Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Computer Science Applications, Applied Mathematics, Electrical and Electronic Engineering
Keywords: Optically-pumped VECSELs, Semiconductor lasers, Wafer-Fusion

Bibliographical note

jufoid=71479

Source: Scopus
Source ID: 85066636665

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

2D Video Coding of Volumetric Video Data

Due to the increased popularity of augmented and virtual reality experiences, the interest in representing the real world in an immersive fashion has never been higher. Distributing such representations enables users all over the world to freely navigate in never seen before media experiences. Unfortunately, such representations require a large amount of data, not feasible for transmission on today's networks. Thus, efficient compression technologies are in high demand. This paper proposes an approach to compress 3D video data utilizing 2D video coding technology. The proposed solution was developed to address the needs of 'tele-immersive' applications, such as virtual (VR), augmented (AR) or mixed (MR) reality with Six Degrees of Freedom (6DoF) capabilities. Volumetric video data is projected on 2D image planes and compressed using standard 2D video coding solutions. A key benefit of this approach is its compatibility with readily available 2D video coding infrastructure. Furthermore, objective and subjective evaluation shows significant improvement in coding efficiency over reference technology.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Signal Processing, Nokia Technologies
Contributors: Schwarz, S., Hannuksela, M. M., Fakour-Sevom, V., Sheikhi-Pour, N.
Number of pages: 5
Pages: 61-65
Publication date: 5 Sep 2018

Host publication information

Title of host publication: 2018 Picture Coding Symposium, PCS 2018 - Proceedings
Publisher: IEEE
Article number: 8456265
ISBN (Print): 9781538641606
ASJC Scopus subject areas: Signal Processing, Media Technology

Bibliographical note

INT=sgn,"Sheikhi-Pour, Nahid"

Source: Scopus
Source ID: 85053915056

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

360 panorama super-resolution using deep convolutional networks

We propose deep convolutional neural network (CNN) based super-resolution for 360 (equirectangular) panorama images used by virtual reality (VR) display devices (e.g. VR glasses). Proposed super-resolution adopts the recent CNN architecture proposed in (Dong et al., 2016) and adapts it for equirectangular panorama images which have specific characteristics as compared to standard cameras (e.g. projection distortions). We demonstrate how adaptation can be performed by optimizing the trained network input size and fine-tuning the network parameters. In our experiments with 360 panorama images of rich natural content CNN based super-resolution achieves average PSNR improvement of 1.36 dB over the baseline (bicubic interpolation) and 1.56 dB by our equirectangular specific adaptation.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Signal Processing, Nokia Technologies
Contributors: Fakour-Sevom, V., Guldogan, E., Kämäräinen, J.
Number of pages: 7
Pages: 159-165
Publication date: 2018

Host publication information

Title of host publication: VISIGRAPP 2018 - Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications
Volume: 4
Publisher: SCITEPRESS
ISBN (Electronic): 9789897582905
ASJC Scopus subject areas: Computer Vision and Pattern Recognition, Computer Graphics and Computer-Aided Design, Artificial Intelligence
Keywords: Deep convolutional neural network, Equirectangular panorama, Super-resolution, Virtual reality

Bibliographical note

EXT="Guldogan, Esin"

Source: Scopus
Source ID: 85047846712

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

405-nm pumped Ce3+-doped silica fiber for broadband fluorescence from cyan to red

A pure Ce-doped silica fiber is fabricated using modified chemical vapor deposition (MCVD) technique. Fluorescence characteristics of a Ce-doped silica fiber are experimentally investigated with continuous wave pumping from 440 nm to 405 nm. Best pump absorption and broad fluorescence spectrum is observed for ∼ 405 nm laser. Next, the detailed analysis of spectral response as a function of pump power and fiber length is performed. It is observed that a-10dB spectral width of ∼ 280 mn can be easily achieved with different combinations of the fiber length and pump power. Lastly, we present, for the first time to the best of our knowledge, a broadband fluorescence spectrum with-10dB spectral width of 301 nm, spanning from ∼ 517.36 nm to ∼ 818 nm, from such fibers with non-UV pump lasers.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Physics, Aston University, Fiber Optics Research Center of the Russian Academy of Sciences, Russian Academy of Sciences
Contributors: Yadav, A., Chichkov, N. B., Gumenyuk, R., Zherebtsov, E., Melkumov, M. A., Yashkov, M. V., Dianov, E. M., Rafailov, E. U.
Publication date: 2019

Host publication information

Title of host publication: Optical Components and Materials XVI
Publisher: SPIE, IEEE
Editors: Digonnet, M. J. F., Jiang, S.
Article number: 1091406
ISBN (Electronic): 9781510624702

Publication series

Name: Proceedings of SPIE - The International Society for Optical Engineering
Volume: 10914
ISSN (Print): 0277-786X
ISSN (Electronic): 1996-756X
ASJC Scopus subject areas: Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Computer Science Applications, Applied Mathematics, Electrical and Electronic Engineering
Keywords: Broadband spectrum, Ce-doped fiber, Ce-ion, Rare earth doped

Bibliographical note

jufoid=71479

Source: Scopus
Source ID: 85066046508

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

50 W VECSEL emitting at 1180 nm

We report a 50 W VECSEL emitting at 1180 nm. The gain chip was grown by MBE and TEC-cooled. The maximum power was measured for a mount temperature of -15◦C.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Optoelectronics Research Centre, Research group: Semiconductor Technology and Applications
Contributors: Kantola, E., Leinonen, T., Penttinen, J., Tavast, M., Ranta, S., Guina, M.
Publication date: 2015

Host publication information

Title of host publication: 2015 Conference on Lasers and Electro-Optics Europe - European Quantum Electronics Conference, 21.-25.6. Munich, Germany : CB_3_1
Publisher: OSA
ISBN (Print): 978-1-4673-7475-0

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A 1.5-W frequency doubled semiconductor disk laser tunable over 40 nm at around 745 nm

1.5 W of output power was obtained in the challenging wavelength range between 700 and 800 nm by frequency doubling a wafer-fused 1.49-μm semiconductor disk laser pumped with 980-nm diodes. A bismuth borate crystal was used for doubling the frequency. A total optical-to-optical efficiency of 8.3 % was achieved. The laser was tunable from 720 to 764 nm with an intracavity birefringent plate. The beam quality parameter M2 remained below 1.5 at all power levels. The laser is attractive for biomedical applications such as photodynamic therapy that benefit from the low absorption of light in tissue in this spectral range.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Optoelectronics Research Centre, Research group: Ultrafast and intense lasers, Research group: Semiconductor Technology and Applications, Optoelectronics Research Centre, Tampere University of Technology, Ecole Polytech Fed Lausanne, Ecole Polytechnique Federale de Lausanne, Lab Phys Nanostruct
Contributors: Saarinen, E. J., Lyytikäinen, J., Ranta, S., Rantamäki, A., Saarela, A., Sirbu, A., Iakovlev, V., Kapon, E., Okhotnikov, O. G.
Number of pages: 8
Publication date: 2016

Host publication information

Title of host publication: Proceedings of SPIE : Vertical External Cavity Surface Emitting Lasers (VECSELs) VI
Volume: 9734
Publisher: SPIE
Article number: 97340P-8

Publication series

Name: Spie conference proceedings
Publisher: SPIE
ISSN (Electronic): 0277-786X

Bibliographical note

INT=orc,"Saarela, Antti"
JUFOID=71479

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A Batteryless Semi-Passive RFID Sensor Platform

Semi-passive RFID sensor possesses longer interrogation distance and advanced functionalities compared with the fully passive ones. Utilizing the wireless energy harvesting, we present a semi-passive RFID sensor platform without the reliance on the external battery. We outline the sensor system development and conduct the wireless measurement of the prototype to demonstrate its performance and functionality.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: BioMediTech, Research group: Wireless Identification and Sensing Systems Research Group, Heriot-Watt University
Contributors: Ma, S., Pournoori, N., Sydänheimo, L., Ukkonen, L., Björninen, T., Georgiadis, A.
Number of pages: 3
Pages: 171-173
Publication date: 1 Sep 2019

Host publication information

Title of host publication: 2019 IEEE International Conference on RFID Technology and Applications (RFID-TA)
Publisher: IEEE
ISBN (Print): 978-1-7281-0590-1
ISBN (Electronic): 978-1-7281-0589-5
Keywords: semi-passive RFID, UHF RFID, temperature sensor, RF energy harvesting
Source: Bibtex
Source ID: 8892176

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A bibliometric study on authorship trends and research themes in knowledge management literature

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial and Information Management, Research group: Business Data Research Group, Research group: Business Ecosystems, Networks and Innovations, Research group: Knowledge and Learning Research Center, University of Exeter, Lappeeranta University of Technology
Contributors: Jussila, J. J., Mustafee, N., Aramo-Immonen, H., Menon, K., Hajikhani, A., Helander, N.
Number of pages: 9
Pages: 389-397
Publication date: 7 Jun 2017

Host publication information

Title of host publication: 12th International Forum on Knowledge Asset Dynamics, St. Petersburg, Russia 7-9 June 2017 : Knowledge Management in the 21th Century: Resilience, Creativity and Co-creation
Volume: 12
Place of publication: St. Petersburg, Russia
ISBN (Electronic): 978-88-96687-10-9
Keywords: bibliometrics

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A Capacity Bound for mmWave-based Channel Access in Ultra-Dense Wearable Deployments

In this paper, we address mmWave (millimeter-wave) channel access protocols operating in extremely high frequency bands. We argue that the anticipated mass use of wearable wireless devices over such protocols is likely to soon produce ultra-dense personal network deployments, especially in commuter scenarios. To this end, this work primarily focuses on a specific area of interest, where wearable devices all hear each other. By introducing an adequate mmWave-based protocol abstraction model, we are interested in characterizing the system capacity bound for the entire class of possible channel access schemes. In particular, we establish a lower bound on system operation by thoroughly investigating a decentralized random-access model. Given that its asymptotic behavior is determined by a simple and elegant expression, the obtained performance estimate may serve as a useful reference for subsequent performance optimization. Therefore, our results constitute an important building block, which allows accounting for more realistic directional antenna patterns, as well as aids in future protocol design.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering, Research group: Emerging Technologies for Nano-Bio-Info-Cogno, International Insitute for Advanced Aerospace Technologies of St. Petersburg State University of Aerospace Instrumentation, Intel Corporation
Contributors: Galinina, O., Turlikov, A., Pyattaev, A., Johnsson, K., Andreev, S., Koucheryavy, Y.
Number of pages: 7
Pages: 298-304
Publication date: 2015

Host publication information

Title of host publication: 2015 7th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)
Publisher: IEEE
ISBN (Print): 978-1-4673-9282-2

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Accessible Games for Blind Children, Empowered by Binaural Sound

Accessible games have been researched and developed for many years, however, blind people still have very limited access and knowledge of them. This can pose a serious limitation, especially for blind children, since in recent years electronic games have become one of the most common and wide spread means of entertainment and socialization. For our implementation we use binaural technology which allows the player to hear and navigate the game space by adding localization information to the game sounds. With our implementation and user studies we provide insight on what constitutes an accessible game for blind people as well as a functional game engine for such games. The game engine developed allows the quick development of games for the visually impaired. Our work provides a good starting point for future developments on the field and, as the user studies show, was very well perceived by the visually impaired children that tried it.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Science For You, N.P.C. - SciFY, Ionian University
Contributors: Drossos, K., Zormpas, N., Giannakopoulos, G., Floros, A.
Number of pages: 8
Pages: 5:1-5:8
Publication date: Jul 2015

Host publication information

Title of host publication: Proceedings of the 8th ACM International Conference on PErvasive Technologies Related to Assistive Environments
Place of publication: New York, NY, USA
Publisher: Association for Computing Machinery (ACM)
ISBN (Print): 978-1-4503-3452-5

Publication series

Name: PETRA '15
Publisher: ACM
Keywords: audio only games, auditory interface, binaural processing, games for the visually impaired
Source: Bibtex
Source ID: urn:898885533f4d5f18cc8f061fc07b3ceb

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Accurate depth estimation from a sequence of monocular images supported by proprioceptive sensors

This paper describes an extended Kalman filter based algorithm for fusion of monocular vision measurements, inertial rate sensor measurements, and camera motion. The motion of the camera between successive images generates a baseline for range computations by triangulation. The recursive estimation algorithm is based on extended Kalman filtering. The depth estimation accuracy is strongly affected by mutual observer and feature point geometry, measurement accuracy of observer motion parameters and line of sight to a feature point. The simulation study investigates how the estimation accuracy is affected by the following parameters: linear and angular velocity measurement errors, camera noise, and observer path. These results draw requirements to the instrumentation and observation scenarios. It was found that under favorable conditions the error in distance estimation does not exceed 2% of the distance to a feature point.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Automation Science and Engineering, Research area: Dynamic Systems, Research area: Measurement Technology and Process Control, Research group: Positioning
Contributors: Davidson, P., Raunio, J. P., Piché, R.
Number of pages: 9
Pages: 249-257
Publication date: 2016

Host publication information

Title of host publication: 23rd Saint Petersburg International Conference on Integrated Navigation Systems, ICINS 2016 - Proceedings
Publisher: State Research Center of the Russian Federation
ISBN (Electronic): 9785919950370
ASJC Scopus subject areas: Computer Networks and Communications, Signal Processing, Electrical and Electronic Engineering, Information Systems
Keywords: Computer vision, Gyroscope, IMU, Odometer, Structure from motion
Source: Scopus
Source ID: 84979573597

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A computationally feasible optimization approach to inverse SAR translational motion compensation

The traditional approach to inverse synthetic aperture radar translational motion compensation is to solve the problem in the two distinct parts of range alignment and autofocus. In this paper, we follow this practice and propose an approach based on the global range alignment and contrast optimization autofocus methods. The proposed range alignment procedure parametrizes the track as a spline polynomial and minimizes the loss function determined by the sum of the squared envelope differences. The necessary numerical global optimization is performed with the differential evolution algorithm. The solution of the autofocus problem is produced with first order numerical optimization, as we solve it by using an expression derived for the gradient of the loss function. In this paper, we consider the back-projection case but the proposed approach is easily extended to other reconstruction techniques. We use simulated inverse synthetic aperture radar data to demonstrate the proposed approach and to illustrate its computational efficiency.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Signal Processing, Research group: MMDM, Finnish Defence Research Agency
Contributors: Vehmas, R., Jylhä, J., Väilä, M., Kylmälä, J.
Number of pages: 4
Pages: 17-20
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the 12th European Radar Conference (EuRAD 2015)
Publisher: IEEE
ISBN (Print): 978-2-87487-041-5

Bibliographical note

EXT="Kylmälä, Jarkko"
EXT="Vehmas, Risto"

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A continuum damage model for creep fracture and fatigue analyses

In this paper a thermodynamically consistent formulation for creep and creep-damage modelling is given. The model is developed for isotropic solids by using proper expressions for the Helmholtz free energy and the complementary form of the dissipation potential, and can be proven to fulfill the dissipation inequality. Also the coupled energy equation is derived. Continuum damage model with scalar damage variable is used to facilitate simulations with tertiary creep phase. The complementary dissipation potential is written in terms of the thermodynamic forces dual to the dissipative variables of creep strain-rate and damage-rate. The model accounts for the multiaxial stress state and the difference in creep rupture time in shear and axial loading as well as in tensile and compressive axial stress. In addition, the model is simple and only four to eight material model parameters are required in addition to the elasticity parameters. A specific version of the proposed model is obtained when constrained to obey the Monkman-Grant relationship between the minimum creep strain-rate and the creep rupture time. The applicability of the Monkman-Grant hypothesis in the model development is discussed. The proposed 3D-model is implemented in the ANSYS finite element software by the USERMAT subroutine. Material parameters have been estimated for the 7CrMoVTiB10-10 steel (T24) for temperatures ranging from 500 to 600 degrees of celcius. Some test cases with cyclic thermal fatigue analysis are presented.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Mechanical Engineering and Industrial Systems, Research area: Applied Mechanics, Valmet Technologies Oy, P.O. Box 109, FI-33101 Tampere, Finland
Contributors: Kauppila, P., Kouhia, R., Ojanperä, J., Saksala, T., Sorjonen, T.
Number of pages: 8
Pages:  887–894
Publication date: 2016

Host publication information

Title of host publication: 21st European Conference on Fracture, ECF21, 20-24 June 2016, Catania, Italy

Publication series

Name: Procedia Structural Integrity
Volume: 2
ISSN (Print): 2452-3216

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A coordination-based brokerage architecture for multi-cloud resource markets

With an increasing number of service providers in the cloud market, the competition between these is also increasing. Each provider attempts to attract customers by providing a high quality service with lowest possible cost and at the same time trying to make profit. Often, cloud resources are advertised and brokered in a spot market style, i.e., traded for immediate delivery. This paper proposes an architecture for a brokerage model specifically for multi-cloud resource spot markets that integrates the resource brokerage function across several cloud providers. We use a tuple space architecture to facilitate coordination. This architecture supports specifically multiple cloud providers selling unused resources in the spot market. To support the matching process by finding the best match between customer requirements and providers, offers are matched with regard the lowest possible cost available for the customer in the market at the time of the request. The key role of this architecture is to provide the coordination techniques built on a tuple space, adapted to the cloud spot market.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Dublin City University, Free University of Bolzano-Bozen, School of Computing Edinburgh Napier University Edinburgh
Contributors: Aldawood, S., Fowley, F., Pahl, C., Taibi, D., Liu, X.
Number of pages: 8
Pages: 7-14
Publication date: 14 Oct 2016

Host publication information

Title of host publication: Proceedings - 2016 4th International Conference on Future Internet of Things and Cloud Workshops, W-FiCloud 2016
Publisher: Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic): 9781509039463
ASJC Scopus subject areas: Computer Networks and Communications, Computer Science Applications, Information Systems
Keywords: Cloud Brokerage Architecture, Cloud Resources Market, Resource Brokerage, Spot Market, Tuple Space
Source: Scopus
Source ID: 85009829349

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Action and power efficiency in self-organization: The case for growth efficiency as a cellular objective in escherichia coli

Complex systems of different nature self-organize using common mechanisms. One of those is increase of their efficiency. The level of organization of complex systems of different nature can be measured as increased efficiency of the product of time and energy for an event, which is the amount of physical action consumed by it. Here we apply a method developed in physics to study the efficiency of biological systems. The identification of cellular objectives is one of the central topics in the research of microbial metabolic networks. In particular, the information about a cellular objective is needed in flux balance analysis which is a commonly used constrained-based metabolic network analysis method for the prediction of cellular phenotypes. The cellular objective may vary depending on the organism and its growth conditions. It is probable that nutritionally scarce conditions are very common in the nature, and, in order to survive in those conditions, cells exhibit various highly efficient nutrient-processing systems like enzymes. In this study, we explore the efficiency of a metabolic network in transformation of substrates to new biomass, and we introduce a new objective function simulating growth efficiency. We are searching for general principles of self-organization across systems of different nature. The objective of increasing efficiency of physical action has been identified previously as driving systems toward higher levels of self-organization. The flow agents in those networks are driven toward their natural state of motion, which is governed by the principle of least action in physics. We connect this to a power efficiency principle. Systems structure themselves in a way to decrease the average amount of action or power per one event in the system. In this particular example, action efficiency is examined in the case of growth efficiency of E. coli. We derive the expression for growth efficiency as a special case of action (power) efficiency to justify it through first principles in physics. Growth efficiency as a cellular objective of E. coli coincides with previous research on complex systems and is justified by first principles in physics. It is expected and confirmed outcome of this work. We examined the properties of growth efficiency using a metabolic model for Escherichia coli. We found that the maximal growth efficiency is obtained at a finite nutrient uptake rate. The rate is substrate dependent and it typically does not exceed 20 mmol/h/gDW. We further examined whether the maximal growth efficiency could serve as a cellular objective function in metabolic network analysis and found that cellular growth in batch cultivation can be predicted reasonably well under this assumption. The fit to experimental data was found slightly better than with the commonly used objective function of maximal growth rate. Based on our results, we suggest that the maximal growth efficiency can be considered a plausible optimization criterion in metabolic modeling for E. coli. In the future, it would be interesting to study growth efficiency as an objective also in other cellular systems and under different cultivation conditions.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: BioMediTech, Wireless Innovation Laboratory at Worcester Polytechnic Institute, Assumption College, Tufts University, Complex Systems Center, University of Vermont
Contributors: Georgiev, G. Y., Aho, T., Kesseli, J., Yli-Harja, O., Kauffman, S. A.
Number of pages: 16
Pages: 229-244
Publication date: 2019

Host publication information

Title of host publication: Evolution, Development and Complexity - Multiscale Evolutionary Models of Complex Adaptive Systems
Publisher: Springer
Editors: Flores Martinez, C. L., Georgiev, G. Y., Smart, J. M., Price, M. E.
ISBN (Print): 9783030000745

Publication series

Name: Springer Proceedings in Complexity
ISSN (Print): 2213-8684
ISSN (Electronic): 2213-8692
ASJC Scopus subject areas: Applied Mathematics, Modelling and Simulation, Computer Science Applications
Keywords: Action efficiency, Constraint-based modeling, Metabolism, Microorganism, Principle of least action

Bibliographical note

jufoid=84878

Source: Scopus
Source ID: 85071889407

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Action recognition using the 3D dense microblock difference

This paper describes a framework for action recognition which aims to recognize the goals and activities of one or more human from a series of observations. We propose an approach for the human action recognition based on the 3D dense micro-block difference. The proposed algorithm is a two-stage procedure: (a) image preprocessing using a 3D Gabor filter and (b) a descriptor calculation using 3D dense micro-block difference with SVM classifier. At the first step, an efficient spatial computational scheme designed for the convolution with a bank of 3D Gabor filters is present. This filter intensifies motion using a convolution for a set of 3D patches and arbitrarily-oriented anisotropic Gaussian. For preprocessed frames, we calculate the local features such as 3D dense micro-block difference (3D DMD), which capture the local structure from the image patches at high scales. This approach is processing the small 3D blocks with different scales from frames which capture the microstructure from it. The proposed image representation is combined with fisher vector method and linear SVM classifier. We evaluate the proposed approach on the UCF50, HMDB51 and UCF101 databases. Experimental results demonstrate the effectiveness of the proposed approach on video with a stochastic textures background with comparisons of the state-of-The-Art methods.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Signal Processing, Don State Technical University, Moscow State University of Technology 'Stankin', Beijing Jiaotong University
Contributors: Voronin, V., Pismenskova, M., Zelensky, A., Cen, Y., Nadykto, A., Egiazarian, K.
Publication date: 2018

Host publication information

Title of host publication: Counterterrorism, Crime Fighting, Forensics, and Surveillance Technologies II
Publisher: SPIE
Article number: 108020O
ISBN (Electronic): 9781510621879

Publication series

Name: Proceedings of SPIE
Volume: 10802
ISSN (Electronic): 1996-756X
ASJC Scopus subject areas: Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Computer Science Applications, Applied Mathematics, Electrical and Electronic Engineering
Keywords: 3D Gabor filter., Action recognition, Micro-block difference, Texture

Bibliographical note

jufoid=71479

Source: Scopus
Source ID: 85057423236

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Actors’ agency in the routines of innovation project portfolio management

Innovation project portfolio management (IPPM) is carried out through various routines of assessing, prioritizing, selecting and coordinating projects. Empirical research increasingly suggests that the official routines are not necessarily used, but personnel use agency, i.e., individual situation-specific judgment in their practice of IPPM. This agency perspective is not sufficiently understood, so far. The purpose of this study is to explore different actors’ agency in implementing IPPM, covering managers, personnel and external stakeholders. The goal is increased knowledge on implementing IPPM in dynamic contexts and development of propositions for better IPPM frameworks that account for different actors’ agency. The qualitative case study with two innovative project-based firms reveals different approaches to IPPM agency across four different actor categories. The nature of the innovation project portfolios is discussed especially in terms of uncertainty and the maturity of the IPPM routines as situation-specific factors relevant in enabling and restraining project actors’ agency in IPPM. The results contribute by proposing agency as a novel perspective to IPPM research, showing evidence of it in highly innovative contexts, and thereby enabling the theorization of situation-specific practice of IPPM.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial Engineering and Management, Research group: Center for Research on Operations Projects and Services, Research group: Center for Research on Project and Service Business (CROPS)
Contributors: Martinsuo, M., Vuorinen, L.
Number of pages: 26
Publication date: 26 Jun 2019

Host publication information

Title of host publication: Proceedings of the EURAM European Academy of Management Conference 2019 : 26-28 June 2019, Lisbon, Portugal
Publisher: European Academy of Management, EURAM
ISBN (Electronic): 978-2-9602195-1-7

Publication series

Name: EURAM conference
ISSN (Print): 2466-7498

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Adapting service-based working culture as the key driver for organisational creativity and innovation

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Information Management and Logistics
Contributors: Ketonen-Oksi, S.
Publication date: 10 Jun 2016

Host publication information

Title of host publication: Towards a new architecture of knowledge : Big Data, culture and creativity : IFKAD 2016-11th International Forum on Knowledge Asset Dynamics, Dresden 15-17.6.2016, Germany
ISBN (Print): 978-88-96687-09-3

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Adaptive Feedback in Local Coordinates for Real-time Vision-Based Motion Control Over Long Distances

We studied the differences in noise-effects, depth-correlated behavior of sensors, and errors caused by mapping between coordinate systems in robotic applications of machine vision. In particular, the highly range-dependent noise densities for semi-unknown object detection were considered. An equation is proposed to adapt estimation rules to dramatic changes of noise over longer distances. This algorithm also benefits the smooth feedback of wheels to overcome variable latencies of visual perception feedback. Experimental evaluation of the integrated system is presented with/without the algorithm to highlight its effectiveness.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Automation and Hydraulic Engineering, Research group: Innovative Hydraulic Automation, Signal Processing, Cargotec Corporation
Contributors: M. Aref, M., Astola, P., Vihonen, J., Tabus, I., Ghabcheloo, R., Mattila, J.
Number of pages: 6
Publication date: 2018

Host publication information

Title of host publication: International Conference on Robotics and Mechantronics : (ICRoM 2017)
Volume: 320
Publisher: IOP Publishing Ltd.
Article number: 012009

Publication series

Name: IOP conference series : materials science and engineering
ISSN (Print): 1757-8981
ISSN (Electronic): 1757-899X

Bibliographical note

EXT="Vihonen, Juho"

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Advocator, jester, spokesperson, provocateur and boundary spanner? Exploring different communication styles at twitter

Purpose – The recent development of digital communication technologies, and of social media in particular, have enhanced more direct communications between companies and their customers. Among many other things, the use of social media has become considerably popular in customer services. However, communicating with different types of customers is not easy. More profound understanding is needed about how to succeed in communicating with the customers in the increasingly impersonal, yet often emotionally sensitive online environments.

Design/methodology/approach – Based on an extensive empirical data from Twitter discussions on climate change and energy industry, the analysis will follow the ideas and concepts of research on personalities and motivation in the context of social media.

Originality/value – By theorising the impacts of human personality traits to a person´s communication style in social media, in accordance with the person´s own choices of roles and motivations to communicate in social media, this study will provide companies new insight on how to approach their customers in online environments.

Practical implications – This study offers significant information for any company that wants to improve their customer service through social media. That is, by presenting the early phase taxonomy for different social media communication styles used in Twitter, this study will provide companies with both new insight and practical advice on how to better share information and manage discussions on their social media channels, considering the different communications styles of their customers.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial and Information Management, Turku University of Applied Science
Contributors: Ketonen-Oksi, S., Jalonen, H.
Publication date: 6 Jun 2017

Host publication information

Title of host publication: 12th Conference proceedings of IFKAD2017 : St.Petersburg, Russia, 7-9 June 2017
ISBN (Print): 978-88-96687-10-9

Publication series

Name: Proceedings IFKAD
ISSN (Print): 2280-787X
Keywords: Social Media, Uses and Gratifications Theory, Twitter, Big Five

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A dynamical quality model to continuously monitor software maintenance

Context: several companies, particularly Small and Medium Sized Enterprises (SMEs), often face software maintenance issues due to the lack of Software Quality Assurance (SQA). SQA is a complex task that requires a lot of effort and expertise, often not available in SMEs. Several SQA models, including maintenance prediction models, have been defined in research papers. However, these models are commonly defined as "one-size-fits-All" and are mainly targeted at the big industry, which can afford software quality experts who undertake the data interpretation tasks. Objective: in this work, we propose an approach to continuously monitor the software operated by end users, automatically collecting issues and recommending possible fixes to developers. The continuous exception monitoring system will also serve as knowledge base to suggest a set of quality practices to avoid (re)introducing bugs into the code. Method: first, we identify a set of SQA practices applicable to SMEs, based on the main constraints of these. Then, we identify a set of prediction techniques, including regressions and machine learning, keeping track of bugs and exceptions raised by the released software. Finally, we provide each company with a tailored SQA model, automatically obtained from companies' bug/issue history. Developers are then provided with the quality models through a set of plug-ins for integrated development environments. These suggest a set of SQA actions that should be undertaken, in order to maintain a certain quality level and allowing to remove the most severe issues with the lowest possible effort. Conclusion: The collected measures will be made available as public dataset, so that researchers can also benefit of the project's results. This work is developed in collaboration with local SMEs and existing Open Source projects and communities.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Free University of Bolzano-Bozen, Università degli Studi Dell'Insubria, Former organisation of the author
Contributors: Lenarduzzi, V., Stan, A. C., Taibi, D., Tosi, D., Venters, G.
Number of pages: 11
Pages: 168-178
Publication date: 2017

Host publication information

Title of host publication: Proceedings of the 11th European Conference on Information Systems Management, ECISM 2017
Publisher: Academic Conferences and Publishing International Limited
ISBN (Electronic): 9781911218524
ASJC Scopus subject areas: Computer Science Applications, Information Systems, Management Information Systems
Keywords: Dynamic Software Measurement, Software Maintenance, Software Quality
Source: Scopus
Source ID: 85029853227

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A dynamic paper machine simulator for testing of model predictive control applications

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Automation Science and Engineering, Research area: Measurement Technology and Process Control
Contributors: Yli-Fossi, T., Kuusisto, R.
Number of pages: 6
Pages: 1-6
Publication date: 2015

Host publication information

Title of host publication: Proceedings of AutomaatioXXI seminaari
Publisher: Suomen Automaatioseura ry
ISBN (Print): 978-952-5183-46-7

Publication series

Name: SAS julkaisusarja
No.: 42
ISSN (Print): 1455-6502

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Affective experiences and student engagement in higher education

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Information Management and Logistics, Research group: Novi, Language Centre, Managing digital industrial transformation (mDIT), Tampere University of Applied Science
Contributors: Helander, N., Boedeker, M., Hellsten, P., Jussila, J., Myllärniemi, J., Tukiainen, M.
Publication date: 13 Sep 2016

Host publication information

Title of host publication: 44th Annual Conference Of The European Society For Engineering Education : 12-15 September 2016, Tampere, Finland
Place of publication: Tampere
ISBN (Print): 9782873520144

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A follow-up case study of the relation of PLM Architecture, Maturity and Business processes

This paper presents findings of two research projects, which study current PLM practices and future PLM challenges of global manufacturing companies. This study focuses on maturity of PLM adoption, PLM system architectures and integrations between the tools and seeks a better understanding of a real business phenomenon by comparing case companies to models presented in literature. Data was collected by interviews and benchmarking sessions in six plus three companies in two projects. The companies are categorized by using a four level PLM maturity model. This research indicates that the PLM adoption maturity and architecture models are related to the effectiveness of PLM usage. Service and project businesses seem to be challenging aspects. This is because PLM systems are mainly used in beginning of life activities of the product. In the future also the end of life and middle of life activities should receive more support from the tools and software.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Mechanical Engineering and Industrial Systems, Research area: Life-cycle Management
Contributors: Vainio, V. V., Pulkkinen, A.
Number of pages: 7
Pages: 867-873
Publication date: 2016

Host publication information

Title of host publication: Product Lifecycle Management in the Era of Internet of Things : 12th IFIP WG 5.1 International Conference, PLM 2015, Doha, Qatar, October 19-21, 2015, Revised Selected Papers
Publisher: Springer New York LLC
ISBN (Print): 9783319331102

Publication series

Name: IFIP Advances in Information and Communication Technology
Volume: 467
ISSN (Print): 1868-4238
ASJC Scopus subject areas: Information Systems and Management
Keywords: PLM maturity, PLM systems architecture, Product lifecycle management
Source: Scopus
Source ID: 84964911364

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Agency relationships in global project business

Project-based firms (PBFs) serving global markets rely on local agents throughout the project life-cycle. In particular, agents are frequently used to support the PBFs efforts in project marketing, project implementation, and in provisioning of services to customers operating the delivered solutions. The purpose of this paper is to analyse principal-agent relationships in global project business from an agency perspective in order to provide further clarity to the their salient characteristics, and to identify mechanisms through which agency problems can be mitigated. Based on our analysis of earlier literature, it appears that PBFs’ principal-agent relationships with local actors during project front-end and operations phases are predominantly explorative in their nature whilst relationships during project implementation can be characterized as exploitative. Respectively, relationships of the former kind are governed by complex combinations of contractual and noncontractual mechanisms, while in relationships of the latter kind, rather simple contractual mechanisms are favoured by PBFs. Our findings imply that PBFs need to consider both the project life-cycle phase, as well as the characteristics and goals of individual agents, when designing mechanisms for governing their agency relationships.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial and Information Management, Research group: Center for Research on Operations Projects and Services, Research group: Center for Research on Operations Projects and Services
Contributors: Ahola, T., Ståhle, M., Martinsuo, M.
Number of pages: 38
Publication date: Jun 2018

Host publication information

Title of host publication: Proceedings of EURAM18 European Academy of Management conference 2018
Publisher: European Academy of Management, EURAM
ISBN (Electronic): 978-2-9602195-0-0

Publication series

Name: EURAM conference
ISSN (Print): 2466-7498
Keywords: Global project business, agency theory, local agents, project marketing, project implementation, service provisioning

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Agile methods in performance management system development process

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Industrial Management, Research group: Cost Management Center, Managing digital industrial transformation (mDIT)
Contributors: Stormi, K., Laine, T., Korhonen, T.
Publication date: 2016

Host publication information

Title of host publication: 10th Conference On New Directions In Management Accounting, Brussels, Belgium, December 14-16, 2016

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Alpha radiation induced luminescence in solar blind spectral region

Intense luminescence in the solar blind spectral region is produced by modifying the gas atmosphere around an alpha emitter. This enables standoffdetection of alpha radiation under daylight conditions.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Physics, Photonics, Helsinki Institute of Physics
Contributors: Kerst, T., Toivonen, J.
Publication date: 2018

Host publication information

Title of host publication: CLEO : Applications and Technology, CLEO_AT 2018
Publisher: OSA - The Optical Society
ISBN (Electronic): 9781557528209
ASJC Scopus subject areas: Electronic, Optical and Magnetic Materials, Mechanics of Materials
Source: Scopus
Source ID: 85049133557

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A mixed-integer linear programming approach for global discrete size optimization of frame structures

This paper proposes a method to solve discrete size optimization problems of frame structures to global optimality. Global optimality is guaranteed by reformulating the optimization problem as a mixed-integer linear program (MILP) and solving it with the branch-and-bound method. The presented mixed variable formulation extends the existing mixed variable formulation for size and topology optimization of truss structures. The MILP is obtained by adopting the simultaneous analysis and design approach. The variables consist of binary decision variables to select a profile section from the catalog, and state variables representing the member end forces. The equilibrium equations and member stiffness relations are included as constraints. The displacement and stress constraints are formulated such that for each member limit values are imposed at predefined locations along the member. The proposed method is applied to a three-bay three-story frame.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research group: Metal and Light-wight structures, KU Leuven
Contributors: Van Mellaert, R., Mela, K., Tiainen, T., Heinisuo, M., Lombaert, G., Schevenels, M.
Number of pages: 14
Pages: 3395-3408
Publication date: 2016

Host publication information

Title of host publication: ECCOMAS Congress 2016 - Proceedings of the 7th European Congress on Computational Methods in Applied Sciences and Engineering : Crete; Greece; 5 June 2016 through 10 June 2016
Volume: 2
Publisher: National Technical University of Athens
ISBN (Electronic): 9786188284401
ASJC Scopus subject areas: Artificial Intelligence, Applied Mathematics
Keywords: Discrete optimization, Frame structures, Global optimization, Mixed-integer linear programs, Size optimization
Source: Scopus
Source ID: 84995387507

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A model based analysis of the measurement errors in inductively coupled passive resonance sensors

A lumped element model was used to predict the measurement results of an inductively coupled resonance sensor. Errors related to the inductive coupling and the reader coil self-resonance were studied. The model was compared with measurements made with a physical circuit.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Automation Science and Engineering, Research area: Microsystems, Research area: Measurement Technology and Process Control, Integrated Technologies for Tissue Engineering Research (ITTE)
Contributors: Salpavaara, T., Lekkala, J.
Number of pages: 4
Publication date: 2015

Host publication information

Title of host publication: IMEKO XXI World Congress, Proceedings, August 30 - September 4, 2015, Prague, Czech Republic
Editor: Holub, J.
ISBN (Print): 978-80-01-05793-3
Keywords: passive resonance sensor, inductive coupling, lumped element model, measurement error

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A model for profiling information and knowledge management in the public sector

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial Engineering and Management, Information and Knowledge Management, Research group: Operations and Supply Chain Group (OSCG)
Contributors: Jääskeläinen, A., Sillanpää, V., Helander, N.
Publication date: 2019

Host publication information

Title of host publication: Proceedings of 14th IFKAD 2019 conference : Matera, Italy, 5-7 June.
ISBN (Electronic): 978-88-96687-12-3

Publication series

Name: Proceedings IFKAD
ISSN (Electronic): 2280-787X

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

An accurate small-signal model of a three-phase VSI-based photovoltaic inverter with LCL-filter

Three-phase photovoltaic inverters are usually equipped with an LCL-type output filter to reduce cost and size of the converter compared to a simple L-type output filter. The LCL-filter has an inherent resonance which has to be damped by a passive or active method to avoid instability. This paper presents an accurate full-order small-signal model of the three-phase VSI-based photovoltaic inverter with LCL-type output filter. The model is developed in the dq-domain, where the steady-state operating point can be solved. The developed small-signal model has been verified by extracting frequency responses from a scaled-down prototype. The model is shown to give accurate predictions on the shape of inverter transfer functions such as control loop gains and output impedance. Thus, the model can be used for control design, impedance shaping and impedance-based stability analysis.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electrical Engineering, Research area: Power engineering, Smart Energy Systems (SES)
Contributors: Aapro, A., Messo, T., Suntio, T.
Number of pages: 8
Pages: 2267-2274
Publication date: 2015

Host publication information

Title of host publication: 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)
ISBN (Print): 978-89-5708-254-6

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Analysis of Cognitive Cooperative Networks with Best Relay Selection and Diversity Reception

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering, Research group: Wireless Communications and Positioning, Department of Telecommunications Engineering, HoChiMinh City University of Technology
Contributors: Ho-Van, K., Sofotasios, P. C., Que Son, V., Thanh Tra, L., Hong Lien, P.
Number of pages: 6
Pages: 651-656
Publication date: 2015

Host publication information

Title of host publication: 2015 International Conference on Advanced Technologies for Communications (ATC)
Publisher: IEEE
ISBN (Print): 978-1-4673-8374-5

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Analysis of Crowdsensed WiFi Fingerprints for Indoor Localization

Crowdsensing is more and more used nowadays for indoor localization based on Received Signal Strength (RSS) fingerprinting. It is a fast and efficient solution to maintain fingerprinting databases and to keep them up-to-date. There are however several challenges involved in crowdsensing RSS fingerprinting data, and these have been little investigated so far in the current literature. Our goal is to analyse the impact of various error sources in the crowdsensing process for the purpose of indoor localization. We rely our findings on a heavy measurement campaign involving 21 measurement devices and more than 6800 fingerprints. We show that crowdsensed databases are more robust to erroneous RSS reports than to malicious fingerprint position reports. We also evaluate the positioning accuracy achievable with crowdsensed databases in the absence of any available calibration.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Electronics and Communications Engineering, Research group: Wireless Communications and Positioning, Automation and Hydraulic Engineering, Research group: Positioning, Tampere University of Technology
Contributors: Peng, Z., Richter, P., Leppäkoski, H., Lohan, E.
Number of pages: 10
Pages: 268-277
Publication date: Nov 2017

Host publication information

Title of host publication: Proceedings of the 21st Conference of Open Innovations Association FRUCT
Place of publication: Helsinki, Finland
Publisher: FRUCT
ISBN (Electronic): 978-952-68653-2-4

Bibliographical note

INT=elt,"Peng, Zhe"

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Analysis of Real Mobility Records in Urban and Suburban Environments

The long-term motion of vehicles and people is of great interest for many sectors of our society, such as urban planning, traffic forecasting, medicine, retail economy and public transport.

This paper analyzes the parameters of multiple mobility data sets obtained from real-field measurement campaigns. The mobility records show how the target vehicles use the street network in different geographical areas (old city center, suburban areas and highways). The records are obtained from Global Navigation Satellite System receivers mounted on the targets.

This study is useful for smart city scenarios for assessing the feasibility and the performance of metropolitan transport networks.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering, Research group: Wireless Communications and Positioning, Wireless Communications and Positioning (WICO), Ministry of National Education. University Politehnica of Bucharest
Contributors: Alexandru, R. C., Lohan, E.
Pages: 0688-0692
Publication date: 2016

Host publication information

Title of host publication: 26TH DAAAM International Symposium on Intelligent Manufacturing and Automation
Publisher: DAAAM International
ISBN (Print): 978-3-902734-07-5

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Analysis of the aircraft operational reliability research series: From statistical models to avionics data monitoring

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Mechanical Engineering and Industrial Systems, Research group: Käyttövarmuuden suunnittelu ja kunnossapito
Contributors: Laitinen, J., Niemi, A.
Number of pages: 15
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the 9th World congress on engineering asset management (WCEAM 2014), Pretoria, South Africa 28-31 Oct, 2014
ISBN (Print): 978-3-319-15536-4

Bibliographical note

siirretään 2015<br/>Contribution: organisation=mei,FACT1=1<br/>Portfolio EDEND: 2015-01-14</br> publication_forum:73368

Source: researchoutputwizard
Source ID: 19

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Analysis of upconversion nanoparticles as an active medium for upconversion light sources

In the presented work, we investigated the optical and thermal stability of upconversion nanoparticles based on the three widely used matrices (NaYF4, Y2O3, LaF3). Analysis of the upconversion emission as a function of pump power density in a wide range revealed a multi-stage functional dependence. The stages of linear growing, saturation and degradation with both reversible and irreversible characters were discovered. For matrices of nanoparticles with low-temperature stability (NaYF4), the dependence proves to be irreversible that could cause by a change in the structure and chemical composition of the matrix. Reversible dependence occurs in matrices with high-temperature stability (Y2O3 and LaF3) and is caused by multiphonon nonradiative relaxation, which can be temperature-stimulated because of self-heating and low air-cooling of the crystal matrixes with low thermal conductivity.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Physics, Research group: Nanophotonics, A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, Institute of Physics, University of Tartu
Contributors: Fedotov, A., Pominova, D., Orlovskaya, E., Orlovskii, Y., Niemi, T., Gumenyuk, R.
Number of pages: 9
Publication date: 1 Mar 2019

Host publication information

Title of host publication: Proceedings of SPIE : Optical Components and Materials XVI
Volume: 10914
Publisher: S P I E - International Society for Optical Engineering
Article number: 109140R
ISBN (Print): 9781510624702

Publication series

Name: Proceedings of SPIE : the International Society for Optical Engineering
Publisher: SPIE, The International Society for Optical Engineering
Volume: 10914
ISSN (Print): 0277-786X
ISSN (Electronic): 1996-756X
Keywords: upconversion, nanoparticles, luminescence, erbium, ytterbium, light sources

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Analysis of User Exploration Patterns during Scene Cuts in Omnidirectional Videos

Omnidirectional video can be comprised of several scenes joined together. A scene in a video can change within the same semantic content due to switching to a different camera position (e.g., in a multi-camera sport event), referred to as intra-scene transition; in other situations, a scene in a video can change between different semantic content, referred to as inter-scene transition (e.g., a scene cut from a movie). — In this paper an attempt is made to 1) find the user exploration behavior in terms of the exploration range, angular speed and acceleration metrics; 2) Investigate whether there is any exploration behavioral change in the watching patterns between intra- and inter-scene transitions. — We find that there is an increase in the exploratory behavior for all the above-mentioned metrics, and show that there is a delay (reaction time) between the scene transition and the start of the exploration. Finally, we also show that the exploratory behavior is higher in inter-scene transitions compared to intra-scene transitions.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Signal Processing, Research group: Multimedia Research Group - MRG, Nokia Technologies
Contributors: Monakhov, D., Naik, D., Curcio, I. D. D., Toukomaa, H.
Number of pages: 20
Publication date: Oct 2018

Host publication information

Title of host publication: SMPTE 2018
Publisher: SMPTE
ISBN (Print): 978-1-61482-960-7
Keywords: Omnidirectional video, 360 Degrees video, Exploration range, Scene transitions, Watching patterns, Scene cuts, Viewport dependent streaming
Source: Bibtex
Source ID: urn:c98a31d3ee60d03894118df511ce8868

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A new method to calculate natural convection heat transfer from a non-isothermal fin array

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Mechanical Engineering and Industrial Systems, Research area: Applied Mechanics, Research group: Lämpö- ja virtaustekniikka
Contributors: Lampio, K., Karvinen, R.
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the 7th Baltic Heat Transfer Conference, August 24-26 2015, Tallinn Estonia
Place of publication: Tallinn
Publisher: Tallinn University of Technology
Editors: Neshumayev, D., Sunden, B.
ISBN (Print): 978-9949-23-817-0

Publication series

Name: Baltic Heat Transfer Conference BHTC
Publisher: Tallinn University of Technology

Bibliographical note

ei ut-numeroa 26.4.2014<br/>Contribution: organisation=epr,FACT1=1

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A new waveguiding mechanism based upon geometric phase

We demonstrate light guiding in a locally twisted anisotropic medium in the absence of a refractive index gradient. The transverse phase modulation required to compensate diffraction is provided by the Pancharatnam-Berry phase.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Physics, Research group: Nonlinear Optics, Research area: Optics, Univ Porto, Universidade do Porto, Fac Ciencias, Ctr Fis Porto, Univ Naples Federico II, Commonwealth Scientific & Industrial Research Organisation (CSIRO), University of Naples Federico II, Dipartimento Fis, Complesso Univ Monte St Angelo, Consiglio Nazionale delle Ricerche (CNR), CNR, SPIN
Contributors: Alberucci, A., Pannian, J. C., Slussarenko, S., Piccirillo, B., Santamato, E., Marrucci, L., Assanto, G.
Publication date: 2016

Host publication information

Title of host publication: Frontiers in Optics 2016
Publisher: Optical Society of America (OSA)
Article number: FF3H.3
ISBN (Print): 978-1-943580-19-4

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

An example of scenario-based evaluation of military capability areas An impact assessment of alternative systems on operations

The concept of military capabilities is often used in strategic planning of defense. This study describes an example of scenario-based evaluation of military capability areas using alternative systems. The study concentrates on three capability areas: protection, awareness and engagement. Evaluations of new systems in realistic but future-oriented scenarios may reveal new possibilities to utilize collaboration of different systems or to replace existing systems with new ones. The study indicates how the combination of UAVs and satellites is the most prominent system compared to UAV or satellite systems to enhance protection, engagement and awareness capability, especially in the 10-year span. Technology development may reveal unexpected synergies in the utilization of the combination of these two systems. Further work will focus on the application of the methodology in other areas and on the collection of data to analyze the effect of the technology development to the capability areas.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Research group: System-on-Chip for GNSS, Wireless Communications and Cyber-Physical Embedded Computing, Department of Electronics and Communications Engineering, Wireless Communications and Positioning (WICO), Information Technology Division, Finnish Defence Research Agency
Contributors: Suojanen, M., Kuikka, V., Nikkarila, J. P., Nurmi, J.
Number of pages: 7
Pages: 601-607
Publication date: 2 Jun 2015

Host publication information

Title of host publication: 9th Annual IEEE International Systems Conference, SysCon 2015 - Proceedings
Publisher: The Institute of Electrical and Electronics Engineers, Inc.
ISBN (Print): 9781479959273
ASJC Scopus subject areas: Computer Networks and Communications, Control and Systems Engineering
Keywords: impact assessment, military capability, scenario, systems, technology forecasting
Source: Scopus
Source ID: 84941308805

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

An Initial Homophily Indicator to Reinforce Context-Aware Semantic Computing

The vast increase of personal sensor information is driving the rise in popularity of context-aware applications. Users crave and very often expect tailored services that are based on the users’ context or personal preferences. The users themselves, using forms, often provide such information. An inference solution typically addresses this problem. In this paper, we present and show by way of a real-world example, the first step towards incorporating information of the user’s social networking behavior in the inference task. We define an initial indicator of a particular social phenomenon, called Homophily, and describe how the indicator measures the presence of homophily at certain moments, also capturing the degree to which it is present. Different from existing indicators, ours lends itself to indicating the presence of homophily in a way that is easier to comprehend, so that it may be easily integrated into and reinforce context-aware semantic computing.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Mathematics, Research group: MAT Intelligent Information Systems Laboratory
Contributors: Rivero-Rodriguez, A., Pileggi, P., Nykänen, O.
Number of pages: 5
Pages: 89-93
Publication date: 2015

Host publication information

Title of host publication: 7th International Conference on Computational Intelligence, Communication Systems and Networks (CICSyN)
Place of publication: Riga
Publisher: IEEE
ISBN (Print): 9781467370165

Publication series

Name: International Conference on Computational Intelligence, Communications and Networks
Source: Mendeley
Source ID: 6f091d3c-7f8d-366f-ac71-f59b685fbff9

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A NLOS-robust TOA positioning filter based on a skew-t measurement noise model

A skew-t variational Bayes filter (STVBF) is applied to indoor positioning with time-of-arrival (TOA) based distance measurements and pedestrian dead reckoning (PDR). The proposed filter accommodates large positive outliers caused by occasional non-line-of-sight (NLOS) conditions by using a skew-t model of measurement errors. Real-data tests using the fusion of inertial sensors based PDR and ultra-wideband based TOA ranging show that the STVBF clearly outperforms the extended Kalman filter (EKF) in positioning accuracy with the computational complexity about three times that of the EKF.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Automation Science and Engineering, Research group: Positioning, Wireless Communications and Positioning (WICO)
Contributors: Nurminen, H., Ardeshiri, T., Piche, R., Gustafsson, F.
Number of pages: 7
Pages: 1-7
Publication date: 1 Oct 2015

Host publication information

Title of host publication: 2015 International Conference on Indoor Positioning and Indoor Navigation (IPIN)
Publisher: IEEE
ISBN (Print): 978-1-4673-8402-5
Keywords: Approximation methods, Computational modeling, Distance measurement, Gaussian distribution, Measurement errors, Noise measurement, Position measurement, NLOS, TOA, UWB, indoor positioning, robust filtering, skew t, skewness, variational Bayes
Electronic versions: 
Source: Bibtex
Source ID: urn:e960458d3c3e7f01508ed799f1fbe96d

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Anomaly Detection and Diagnostics of a Wheel Loader Using Dynamic Mathematical Model and Joint Probability Distributions

In this paper, we present anomaly detection and diagnostics for articulated frame steered hydraulic wheel loader. The presented methodology is based on the analysis and comparison of the responses of a dynamic mathematical model and a real wheel loader using a joint probability distribution of correlation coefficients of multiple variables. The behaviour of an undamaged machine is modelled by probability density functions of the correlation coefficients using histograms and test how well the future behaviour fits the model. First, the
time series data of multiple variables are segmented into segments of the same length. Correlation coefficients are then calculated for each segment and the distributions of the correlation coefficients are estimated by computing probability density functions using histograms. Finally, the joint probabilities that the correlations in the data segments of the time series data are observed are calculated using the already computed histograms. The diagnostics is based on the combination of static threshold and threshold based on mean value of joint probabilities. The dynamic mathematical model of the wheel loader is presented with verification results. A jammed flushing valve of the hydrostatic transmission was used as an anomaly to study the changes in the joint probability values. Finally, the efficiency of the presented method is presented
with good results regarding detection of anomalies and diagnostics of the wheel loader.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Intelligent Hydraulics and Automation, Research group: Fluid power automation in mobile machines, Research group: Field robotics and control
Contributors: Krogerus, T., Hyvönen, M., Backas, J., Huhtala, K.
Number of pages: 14
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the Fourteenth Scandinavian International Conference on Fluid Power, SICFP15. May 20-22, 2015. Tampere, Finland
Publisher: Tampere University of Technology. Department of Intelligent Hydraulics and Automation
ISBN (Electronic): 978-952-15-3530-7

Publication series

Name: The Scandinavian International Conference on Fluid Power
ISSN (Electronic): 2342-2726
Keywords: Diagnostics, Time series, Anomaly detection, Joint probability, Correlation coefficients, Simulation, Dynamic mathematical model, Wheel loader, Hydraulics
Electronic versions: 
URLs: 

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Appearance of a Drift Problem in Variable-step Perturbative MPPT Algorithms

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electrical Engineering, Research area: Power engineering
Contributors: Kivimäki, J., Suntio, T.
Number of pages: 7
Pages: 1602-1608
Publication date: 2015

Host publication information

Title of host publication: 31st European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC)
ISBN (Print): 3-936338-39-6

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Applying third-party moocs in programming education: a case study

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Research group: Software Engineering and Intelligent Systems, Research group: Software Engineering and Intelligent Systems, Pervasive Computing
Contributors: Saari, M., Mäkinen, T., Linna, P.
Number of pages: 7
Pages: 53-59
Publication date: 3 Jul 2017

Host publication information

Title of host publication: 9th International Conference on Education and New Learning Technologies : 3-5 July, 2017 Barcelona, Spain
Place of publication: Barcelona, Spain
Publisher: IATED
ISBN (Electronic): 978-84-697-3777-4

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Architectural patterns for microservices: A systematic mapping study

Microservices is an architectural style increasing in popularity. However, there is still a lack of understanding how to adopt a microservice-based architectural style. We aim at characterizing different microservice architectural style patterns and the principles that guide their definition. We conducted a systematic mapping study in order to identify reported usage of microservices and based on these use cases extract common patterns and principles. We present two key contributions. Firstly, we identified several agreed microservice architecture patterns that seem widely adopted and reported in the case studies identified. Secondly, we presented these as a catalogue in a common template format including a summary of the advantages, disadvantages, and lessons learned for each pattern from the case studies. We can conclude that different architecture patterns emerge for different migration, orchestration, storage and deployment settings for a set of agreed principles.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Pervasive Computing, Free University of Bolzano-Bozen
Contributors: Taibi, D., Lenarduzzi, V., Pahl, C.
Number of pages: 12
Pages: 221-232
Publication date: 2018

Host publication information

Title of host publication: CLOSER 2018 - Proceedings of the 8th International Conference on Cloud Computing and Services Science
Publisher: SCITEPRESS
ISBN (Electronic): 9789897582950
ASJC Scopus subject areas: Computer Science (miscellaneous), Software, Computer Science Applications
Keywords: Architectural style, Architecture pattern, Cloud migration, Cloud native, DevOps, Microservices
Source: Scopus
Source ID: 85046716130

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Architecture for Open, Knowledge-Driven Manufacturing Execution System

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Automation Science and Engineering, Research area: Manufacturing and Automation, Research group: Factory automation systems technology
Contributors: Iarovyi, S., Xu, X., Lobov, A., Lastra, J. L. M., Strzelczak, S.
Number of pages: 9
Pages: 519-527
Publication date: 2015

Host publication information

Title of host publication: Advances in Production Management Systems: Innovative Production Management Towards Sustainable Growth
Publisher: Springer
ISBN (Print): 978-3-319-22759-7
Source: Bibtex
Source ID: urn:147f1b11eec705e9a04fc52893d63bac

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A Semantic Meta-Model Repository for Lightweight M2M

One of the biggest problems in managing devices for the Internet of Things (IoT) is the ability for a management server to independently discover and retrieve data models for vendor-specific devices. At the same time, several device management methods also lack methods for device vendors to share their data models in a consistent manner. This paper presents the design and implementation of a repository that can flexibly accommodate many needs with regards to these issues, and allows device vendors to publish semantically similar data models as well as attach meta-data to these models. A Machine-to-Machine (M2M) communication interface also allows a management server to communicate with the repository. We show how these techniques can be used with the Lightweight Machine-to-Machine (LWM2M) standard.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Computing Sciences, Research area: Information security, Ericsson
Contributors: Silverajan, B., Zhao, H., Kamath, A.
Number of pages: 5
Pages: 468-472
Publication date: 11 Apr 2019

Host publication information

Title of host publication: 2018 IEEE International Conference on Communication Systems, ICCS 2018
Publisher: IEEE
ISBN (Electronic): 9781538678640
ASJC Scopus subject areas: Computer Networks and Communications, Hardware and Architecture, Information Systems and Management, Aerospace Engineering
Keywords: data model repository, IoT device management, LWM2M
Source: Scopus
Source ID: 85065038511

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A social capital perspective on gaining optimal solutions from suppliers as preferred customer

Capable suppliers willing to provide their best possible offering are increasingly scarce. Such suppliers increasingly select customers to whom they invest their best resources and provide the best offerings. The existing research has paid only limited attention to the antecedents of supplier’s solution provision performance, i.e. the design of a good solution and its implementation. Further, existing empirical research has rarely taken a detailed view on the phases of a supplier’s solution provision. This study seeks answers to the following questions: can the availability or absence of social capital in the supplier-buyer relationship explain supplier’s solution provision performance?, what is the importance of different forms of social capital in supplier’s solution provision performance and the different phases of solution provision? The empirical data of this study is collected with a survey addressed to suppliers of four large companies. The survey is sent to 1630 supplier companies and 662 usable responses are received resulting in a response rate of 41%. Partial least squares (PLS) structural equation modelling (SEM) and polynomial regression are used to analyze the data. The results demonstrate the importance of social capital in obtaining the optimal solution from suppliers. The results also present that different types of social capital have different influence on the phases of solution provision. Diagnosis of customer needs appears as the phase most significantly driven by social capital prevalent in the supplier-buyer relationship. The results also show that different forms of social capital can compensate each other and that structural capital can take a stronger role compared to relational capital.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial and Information Management, University of Twente
Contributors: Jääskeläinen, A., Schiele, H., Aarikka-Stenroos, L.
Publication date: 2018

Host publication information

Title of host publication: Academy of Management Proceedings
Volume: 2018
Publisher: Academy of Management AOM
Edition: 1

Publication series

Name: Academy of Management Proceedings
Volume: 2018
No.: 1
ISSN (Print): 0065-0668
ISSN (Electronic): 2151-6561

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A Socially-Intelligent Multi-Robot Service Team for In-Home Monitoring

The objective of this study is to develop a socially-intelligent service team comprised of multiple robots with sophisticated sonic interaction capabilities that aims to transparently collaborate towards efficient and robust monitoring by close interaction. In the distributed scenario proposed in this study, the robots share any acoustic data extracted from the environment and act in-sync with the events occurring in their living environment in order to provide potential means for efficient monitoring and decision-making within a typical home enclosure. Although each robot acts as an individual recognizer using a novel emotionally-enriched word recognition system, the final decision is social in nature and is followed by all. Moreover, the social decision stage triggers actions that are algorithmically distributed among the robots' population and enhances the overall approach with the potential advantages of the team work within specific communities through collaboration.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Technological Educational Institute of Piraeus, Trakya University, Ionian University
Contributors: Drossos, K., Floros, A., Potirakis, S., Tatlas, N., Tuna, G.
Pages: 159-164
Publication date: Jul 2014

Host publication information

Title of host publication:  Information, Intelligence, Systems and Applications, IISA 2014, The 5th International Conference on
Publisher: IEEE
ISBN (Print): 978-1-4799-6171-9
ISBN (Electronic): 978-1-4799-6170-2

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Assessing business learning by analysing ERP simulation log files

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Information Management and Logistics, Research group: Novi
Contributors: Nisula, K., Pekkola, S.
Publication date: 10 Dec 2016

Host publication information

Title of host publication: AIS SIGED 2016 Conference on IS education and Research. : Dublin, Ireland, December 10-11, 2016
Place of publication: Dublin
ISBN (Print): 978-0-692-81119-1

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Assessing sustainability orientations of first year university students

In order for universities to be able to develop and adjust their courses and teaching methods to better support the sustainability and ethical education of university students, the status and levels of sustainability and ethical standards among freshman students need to be measured and analyzed. The objective of our research is to study do first year university students already consider sustainability and ethical aspects when assessing the business environment and opportunities in the markets. The authors intend to develop a sustainability assessment tool and determine whether entrepreneurship courses support sustainable and responsible thinking in university education by measuring the opinion of students using a self-assessment questionnaire. The development of the sustainability assessment tool is based on existing measures on students’ sustainability and ethical commitment supported by the works of Buil et al. (2016) and De Clercq & Dakhli (2009). The data were collected at the Tampere University of Technology in Finland and Tallinn University of Technology in Estonia. The findings indicate that first year students already acknowledge the need for taking into account sustainability, and that it is important for business initiatives to be both socially and environmentally responsible. In addition, this study shows that the sustainability orientations of students in different engineering disciplines do not vary significantly from each other. Thus, the sustainability assessment tool developed in this study has been tested and found to be coherent among students in different engineering disciplines. Even though the data set is rather limited, it encourages further research.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial Engineering and Management, Research group: Center for Innovation and Technology Research, Education, Research group: Knowledge and Learning Research Center, Tallinn University of Technology, Tallinn, Estonia
Contributors: Saari, U., Venesaar, U., Ojasoo, M., Mäkinen, S., Nokelainen, P.
Number of pages: 8
Pages: 1-8
Publication date: 13 Aug 2019

Host publication information

Title of host publication: 79th Annual Meeting of the Academy of Management Proceedings : Symposium on Reported Impacts of Sustainability in Management Education and Engagement, August 9-13, 2019, Boston, Massachusetts, USA
Publisher: Academy of Management

Publication series

Name: Academy of management proceedings
ISSN (Print): 0065-0668
ISSN (Electronic): 2151-6561

Bibliographical note

Kysytty isbn Saarelta tammikuu 2020 M. K.

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Assessment of student retention using the Evolute approach, an overview

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Pori Department
Contributors: Einolander, J., Vanharanta, H.
Number of pages: 6
Pages: 581–586
Publication date: 2015

Host publication information

Title of host publication: 6th International Conference on Applied Human Factors and Ergonomics (AHFE 2015) and the Affiliated Conferences, AHFE 2015
Publisher: Elsevier

Publication series

Name: Procedia Manufacturing
Volume: 3
ISSN (Print): 2351-9789

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A study on the behaviour of the weathered crust in the Perniö failure test

A full-scale embankment failure test was done in Finland in 2009 in Perniö. The test was conducted in order to gather data to
enhance stability calculation methods on soft soils in railway environment. A shallow embankment with loading structure was built on top
of an existing fill layer over a stiff and overconsolidated clay crust followed by a soft sensitive clay layer and brought to failure in two
days. The soft clay has been thoroughly studied and modeled over the last years based on high quality laboratory and field tests as well as
measurements from the experiment. In this paper, the effect of the weathered clay crust on the stability of the embankment is studied. Ac-
cording to La Rochelle (1974), the field vane tends to overestimate the undrained shear strength of the dry crust since measurements are
affected by uncertainties due to soil structure and test conditions. For this reason a parametric study on stiffness and strength parameters of
Perniö dry crust is done through comparison of experimental data with predictions from finite element method. In particular, three differ-
ent models are used in this study: the isotropic Mohr-Coulomb and Hardening Soil model and the anisotropic NGI-ADP model. The anal-
ysis is carried out with PLAXIS 2D. Finally, FE analysis of the Perniö failure test is done using different soil models and the failure load
is predicted. Results are discussed in order to evaluate the most suitable model for the realistic prediction of undrained behaviour of Perniö
weathered crust.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research group: Foundation Structures, Life Cycle Effectiveness of the Built Environment (LCE@BE)
Contributors: D'Ignazio, M., Di Buo, B., Länsivaara, T.
Number of pages: 6
Pages: 3639-3644
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the XVI ECSMGE 2015 : 13-17 September 2015 - Edinburgh, Geotechnical Engineering for Infrastructure and Development
Publisher: ICE Publishing
ISBN (Print): 9780727760678

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A Survey of People Movement Analytics Studies in the Context of Smart Cities

With the advent of the newest emergency call mandates in US and Europe, with the advances in cellular-based and WiFi-based localization solutions, and with the developments of cloud computing and web-based social networks, the location information and movement-related data is becoming easier and easier to collect from the user mobile devices and from the user cloud data and it is more and more used in a variety of Location Based Services and for various network planning and management tasks. The last decade has seen significant research efforts dedicated to analyze the user location and movement data, to extract mobility patterns and features and to use the predicted patterns for a more efficient resource allocation and for better location-based services. In the context of what is called today ’the smart city’, user mobility and location data are becoming key components of the smart city architecture and applications. The goal of this paper is to give a compact and comprehensive overview of the challenges and solutions related to collecting, storing, analyzing, visualizing, using or distributing people’s movement data and to summarize the purposes of such data in the context of the smart cities and the Internet of Things

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering, Research group: Wireless Communications and Positioning, Aalto University, Tampere University of Technology, Department of Electronics and Communications Engineering, Laboratory for Future Electronics
Contributors: Lohan, E., Kauppinen, T., Debnath, S. B. C.
Pages: 151-158
Publication date: 10 Nov 2016

Host publication information

Title of host publication: Proceedings of the FRUCT’19
ISBN (Electronic): 978-952-68397-5-2

Bibliographical note

INT=elt,"Debnath, Sree Bash Chandra"

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A trial of yoking-proof protocol in RFID-based smart-home environment

Owing to significant progress in the Internet of Things (IoT) within both academia and industry, this breakthrough technology is increasingly penetrating our everyday lives. However, the levels of user adoption and business revenue are still lagging behind the original expectations. The reasons include strong security and privacy concerns behind the IoT, which become critically important in the smart home environment. Our envisioned smart home scenario comprises a variety of sensors, actuators, and end-user devices interacting and sharing data securely. Correspondingly, we aim at investigating and verifying in practice the Yoking-proof protocol, which is a multi-factor authentication solution for smart home systems with an emphasis on data confidentiality and mutual authentication. Our international team conducted a large trial featuring the Yoking-proof protocol, RFID technology, as well as various sensors and user terminals. This paper outlines the essentials of this trial, reports on our practical experience, and summarizes the main lessons learned.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Electronics and Communications Engineering, Research group: Emerging Technologies for Nano-Bio-Info-Cogno, St. Petersburg State University of Aerospace Instrumentation, Brno University of Technology
Contributors: Prudanov, A., Tkachev, S., Golos, N., Masek, P., Hosek, J., Fujdiak, R., Zeman, K., Ometov, A., Bezzateev, S., Voloshina, N., Andreev, S., Misurec, J.
Number of pages: 10
Pages: 25-34
Publication date: 2016

Host publication information

Title of host publication: Distributed Computer and Communication Networks - 19th International Conference, DCCN 2016, Revised Selected Papers
Volume: 678
Publisher: Springer Verlag
ISBN (Print): 9783319519166

Publication series

Name: Communications in Computer and Information Science
Volume: 678
ISSN (Print): 1865-0929
ASJC Scopus subject areas: Computer Science(all)
Keywords: Authentication, IoT, RFID, Smart-Home, Yoking-proof protocol
Source: Scopus
Source ID: 85013436263

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Augmenting Technology Trees: Automation and Tool Support

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Mathematics, Research group: MAT Computer Science and Applied Logics
Contributors: Heinimäki, T. J., Elomaa, T.
Number of pages: 8
Pages: 68-75
Publication date: Sep 2015

Host publication information

Title of host publication: Proceedings of the Seventh International Conference on Virtual Worlds and Games for Serious Applications (VS-Games 2015)
Publisher: IEEE
ISBN (Print): 978-1-4799-8101-4
ISBN (Electronic): 978-1-4799-8102-1
ASJC Scopus subject areas: Software

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Automated pile transfer work cycles with a robotic wheel loader

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Automation and Hydraulic Engineering, Research group: Robotics and Automation, Research group: Innovative Hydraulic Automation
Contributors: Halbach, E., Kolu, A., Ghabcheloo, R.
Number of pages: 8
Publication date: 2018

Host publication information

Title of host publication: 17th International Conference on Computing in Civil and Building Engineering (ICCCBE) : Tampere, 5-7 June 2018
Place of publication: Tampere, Finland
Publisher: RIL
Editors: Mela, K., Pajunen, S., Raasakka, V.
ISBN (Electronic): 978-951-758-632-0

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Automatic Classification of Z-ring Formation Stages at the Single Cell Level in Escherichia Coli by Machine Learning

In E. coli, Z-ring formation precedes the assembly of the membrane that partitions a cell into two daughter cells. Initially, as FtsZ proteins are expressed, they preferentially locate at the poles. After, they form a ring at midcell, in between the nucleoids, 'marking' where a constriction will form. Finally, the ring becomes a circle, where the septum separating the daughter cells forms. Being the temporal-spatial organization of FtsZ noisy, differing between cells in timing and location, its study requires observing many cells by time-lapse microscopy. To assist, image and signal processing methods are needed to extract information unbiasedly from many cells. Also, one needs automatic identification of the ring formation stage in individual cells. Here we used three classification methods to identify the stage of ring formation from microscopy images: Decision Tree (DT), Support Vector Machine (SVM), and Regularized Multinomial Logistic regression (RMLR). We find that RMLR performs better (higher 10-fold cross-validated accuracy, ACC). Our study will assist future studies at the single cell level of the spatio-temporal dynamics of cell division in E. coli.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Faculty of Biomedical Sciences and Engineering, Research group: Laboratory of Biosystem Dynamics-LBD, Signal Processing, BioMediTech, Universidade Nova de Lisboa, Aalto Univ, Aalto University, Dept Signal Proc & Acoust
Contributors: Zare, M., Neeli-Venkata, R., Martins, L., Peltonen, S., Ruotsalainen, U., Ribeiro, A. S.
Number of pages: 5
Pages: 72-76
Publication date: 2017

Host publication information

Title of host publication: Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies, Vol 2: Bioimaging
Publisher: SCITEPRESS
Editors: Silveira, M., Fred, A., Gamboa, H., Vaz, M.
ISBN (Electronic): 978-989-758-215-8
Keywords: Z-ring Formation, Stages, Time-lapse Microscopy, Classification Methods, DIVISION SITES, PROTEINS FTSZ, LOCALIZATION, SEGREGATION, DYNAMICS
Source: WOS
Source ID: 000413260200008

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

A Variable Battery Supply DC-DC Buck Converter Designed for 45nm-CMOS Technology

In this paper, a buck DC-DC converter is presented that is capable of operation under variable input battery voltage ranging from 3.5V to 6V. The proposed converter is based on a new design technique using an adaptive biasing circuit for cascode power stage. The biasing circuit changes its configuration when the battery voltage drops down to 4.5V. The converter is implemented in 45-nm CMOS technology; it was simulated and its operation was verified at an output power of 200mW where it achieves a maximum power conversion efficiency of 81% for an output voltage of 1.25V.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering, Research group: RF Integrated Circuits, Univ Alberta, University of Alberta, Tampere Univ Technol, Tampere University of Technology
Contributors: Fouladi, A., Järvenhaara, J., Filanovsky, I. M., Tchamov, N. T.
Publication date: 15 May 2016

Host publication information

Title of host publication: 2016 IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), Vancouver, May 15-18, 2016.
ISBN (Electronic): 978-1-4673-8721-7

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Back-calculation of the Saint-Alban A test embankment with a new modelling approach in LEM

To facilitate the continued use of limit equilibrium method (LEM) in stability design of embankments on soft clays, the new calculation method “Hybrid su” (HSU) has been developed. It is used to derive undrained shear strength from effective strength parameters, or to predict the excess pore pressure at failure. The HSU method uses an anisotropic effective stress soil model with volumetric hardening, from which a closed form solution for the effective mean stress at failure p’f is derived. This in turn is used to derive the anisotropic undrained shear strength (for use in total stress analyses), or excess pore pressure (for use in undrained effective stress analyses). The model accounts for factors such as anisotropy, consolidation state, volumetric hardening and to some extent, rate effects. An advantage of the model over traditional undrained effective stress calculations is that the overestimation of shear strength at F > 1 is avoided.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research group: Foundation Structures
Contributors: Lehtonen, V., Länsivaara, T.
Number of pages: 9
Pages: 691-699
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the The 17th Nordic Geotechnical Meeting, Reykjavik Iceland : 25th - 28th of May 2016
ISBN (Electronic): 978-9935-24-002-6

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Backend infrastructure supporting audio augmented reality and storytelling

Today, museums are looking for new ways to attract and engage audience. These include virtual exhibitions, augmented reality and 3D modelling based applications, and interactive digital storytelling. The target of all these activities is to provide better experiences for audiences that are very familiar with the digital world. In augmented reality (AR) and interactive digital storytelling (IDS) systems, visual presentation has been dominant. In contrast to this trend, we have chosen to concentrate on auditory presentation. A key element for this is a backend service supporting different client applications. This paper discusses our experiences from designing a portable open source based audio digital asset management system (ADAM), which supports interaction with smart phones and tablets containing audio augmented reality and audio story applications. We have successfully implemented ADAM system and evaluated it in the Museum of Technology in Helsinki, Finland.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Pervasive Computing, Research area: Software engineering, Helsinki Metropolia University of Applied Sciences
Contributors: Salo, K., Giova, D., Mikkonen, T.
Number of pages: 11
Pages: 325-335
Publication date: 2016

Host publication information

Title of host publication: Human Interface and the Management of Information: Applications and Services : 18th International Conference, HCI International 2016 Toronto, Canada, July 17-22, 2016. Proceedings, Part II
Publisher: Springer Verlag
ISBN (Print): 9783319403960

Publication series

Name: Lecture Notes in Computer Science
Volume: 9735
ISSN (Print): 0302-9743
ISSN (Electronic): 1611-3349
ASJC Scopus subject areas: Computer Science(all), Theoretical Computer Science
Keywords: Audio augmented reality, Digital asset management, Metadata, Open source DAM, Soundscape
Source: Scopus
Source ID: 84978903908

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Balancing Expectations to the Health Software Production Process Standard

This paper presents the stakeholder expectations to the new version of the ISO/IEC health software life cycle standard 62304. This software production standard is central to the medical device industry but the new version is expected to cover even more scope including also other health software than just regulated medical device software. This paper discusses how to balance the expectations of the law makers, regulatory bodies, software producers and users etc. Compared to the present version the new version should take more into account the special characteristics of developing low risk mobile health application software and cybersecurity while maintaining the endorsement of the regulatory bodies.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Signal Processing, Research group: Sleep and Sensory Signal Analysis Group-SSSAG
Contributors: Värri, A.
Publication date: 2015

Host publication information

Title of host publication: The 3rd International Virtual Research Conference In Technical Disciplines
ISBN (Print): 978-80-554-1125-5

Publication series

Name: RCITD - Proceedings in Research Conference in Technical Disciplines
ISSN (Print): 2453-6571
ISSN (Electronic): 1339-5076

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Beaconing in a highway scenario: Vulnerable vehicles problem

Periodic exchange of short status messages using IEEE 802.11p also referred to as beaconing is a core inter-vehicle communication mode enabling novel cooperative safety applications. A beaconing in the platoon of vehicles moving on a highway is studied as one of the popular practical scenarios. This paper demonstrates that when the inter-arrival times of beacons are small and under certain medium access control protocol parameters, some vehicles in the platoon may suffer from serious performance degradation. The condition when such situation takes place is studied and recommendations are given on a proper choice of IEEE 802.11p parameters.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Electronics and Communications Engineering
Contributors: Tariq, A. B.
Number of pages: 7
Pages: 169-175
Publication date: 2012

Host publication information

Title of host publication: Proceedings of the 11th Conference of Open Innovations Association FRUCT, FRUCT 2012
Volume: 2012-April
Publisher: IEEE
ISBN (Electronic): 9785808807075
ASJC Scopus subject areas: Computer Science(all), Electrical and Electronic Engineering
Keywords: Beaconing, Hidden-nodes, IEEE 802.11p, Terms, VANET

Bibliographical note

INT=elt"Tariq, Ali Bin"

Source: Scopus
Source ID: 85044729916

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

BEADS: A dataset of Binaural Emotionally Annotated Digital Sounds

Emotion recognition from generalized sounds is an interdisciplinary and emerging field of research. A vital requirement for this kind of investigations is the availability of ground truth datasets. Currently, there are 2 freely available datasets of emotionally annotated sounds, which, however, do not include sound evenets (SEs) with manifestation of the spatial location of the source. The latter is an inherent natural component of SEs, since all sound sources in real-world conditions are physically located and perceived somewhere in the listener's surrounding space. In this work we present a novel emotionally annotated sounds dataset consisting of 32 SEs that are spatially rendered using appropriate binaural processing. All SEs in the dataset are available in 5 spatial positions corresponding to source/receiver angles equal to 0, 45, 90, 135 and 180 degrees. We have used the IADS dataset as the initial collection of SEs prior to binaural processing. The annotation measures obtained for the novel binaural dataset demonstrate a significant accordance with the existing IADS dataset, while small ratings declinations illustrate a perceptual adaptation imposed by the more realistic SEs spatial representation.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Ionian University
Contributors: Drossos, K., Floros, A., Giannakoulopoulos, A.
Number of pages: 6
Pages: 158-163
Publication date: 1 Jul 2014

Host publication information

Title of host publication: Information, Intelligence, Systems and Applications, IISA 2014, The 5th International Conference on
Publisher: IEEE
ISBN (Electronic): 978-1-4799-6171-9
Keywords: emotion recognition, music, BEADS, IADS dataset, SEs spatial representation, binaural dataset, binaural emotionally annotated digital sounds, binaural processing, emotionally annotated sound dataset, ground truth datasets, music signals, sound evenets, Acoustics, Art, Databases, Electronic mail, Emotion recognition, Headphones, Semantics
Source: Bibtex
Source ID: urn:b4c1c66c90ee0f9dcdb6a6f156c1bf7e

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Being a start-upper in Italy: Motivations, obstacles and success factors

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Pori Department, Research group: Business Ecosystems, Networks and Innovations, Department of Information Management and Logistics, Research group: Novi, Managing digital industrial transformation (mDIT), University of Calabria
Contributors: Michele Felicetti, A., Ammirato, S., Raso, C., Aramo-Immonen, H., Jussila, J.
Number of pages: 14
Pages: 1370-1383
Publication date: 15 Jun 2016

Host publication information

Title of host publication: Proceedings of the 11th forum on knowledge asset dynamics : Towards a new architecture of knowledge: big data, culture and creativity
Place of publication: Dresden
Article number: 182
ISBN (Electronic): 978-88-96687-09-3
Keywords: Start-up

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Benchmarking of Factory Level ESD Control

A standard compliance of the factory level ESD control varies between organizations. We have audited twelve different factories during the 24-month benchmarking period. These audits were focused on the ESD control programs and the process control. The summary of results and examples of the best practices are presented in this paper.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering, ABB Oy, Drives, Nokia Corporation, Cascade Metrology
Contributors: Viheriäkoski, T., Kohtamäki, J., Peltoniemi, T., Tamminen, P.
Number of pages: 7
Publication date: 27 Sep 2015

Host publication information

Title of host publication: Electrical Overstress/Electrostatic Discharge Symposium Proceedings 2015
Volume: 2015
Place of publication: USA
Publisher: IEEE COMPUTER SOC
Article number: 6B.1
ISBN (Print): 9781479988952
ASJC Scopus subject areas: Engineering(all)
Keywords: Surface Resistivity, dissipative material, measurement
Electronic versions: 

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Benchmarking of several disparity estimation algorithms for light field processing

A number of high-quality depth imaged-based rendering (DIBR) pipelines have been developed to reconstruct a 3D scene from several images taken from known camera viewpoints. Due to the specific limitations of each technique, their output is prone to artifacts. Therefore, the quality cannot be ensured. To improve the quality of the most critical and challenging image areas, an exhaustive comparison is required. In this paper, we consider three questions of benchmarking the quality performance of eight DIBR techniques on light fields: First, how does the density of original input views affect the quality of the rendered novel views? Second, how does disparity range between adjacent input views impact the quality? Third, how does each technique behave for different object properties? We compared and evaluated the results visually as well as quantitatively (PSNR, SSIM, AD, and VDP2). The results show some techniques outperform others in different disparity ranges. The results also indicate using more views not necessarily results in visually higher quality for all critical image areas. Finally, we have shown a comparison for different scene's complexity such as non-Lambertian objects.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Computing Sciences, Moving Picture Technologies
Contributors: Zakeri, F. S., Bätz, M., Jaschke, T., Keinert, J., Chuchvara, A.
Publication date: 2019

Host publication information

Title of host publication: Fourteenth International Conference on Quality Control by Artificial Vision
Publisher: SPIE, IEEE
Editors: Bazeille, S., Verrier, N., Cudel, C.
Article number: 111721C
ISBN (Electronic): 9781510630536

Publication series

Name: Proceedings of SPIE - The International Society for Optical Engineering
Volume: 11172
ISSN (Print): 0277-786X
ISSN (Electronic): 1996-756X
ASJC Scopus subject areas: Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Computer Science Applications, Applied Mathematics, Electrical and Electronic Engineering
Keywords: Depth image-based rendering, Disparity estimation, Quality evaluation

Bibliographical note

jufoid=71479

Source: Scopus
Source ID: 85070208910

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Bioimpedance measurement system for evaluation of the status of wound healing

Hard-to-heal wounds are usually evaluated visually by a medical professional. Visual inspection as a method is subjective and in order to evaluate the wound the dressings have to be removed. Our group has developed a wound patch, a bioimpedance device and a PC software for mapping the wound area and to evaluate the status of wound healing. This study introduces the patch and the measurement system. We also present the test measurement results obtained using an early version of the wound patch. The results confirmed that the patch can be used for the evaluation of the wound status.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering, Research group: Personal Electronics Group, Research group: Physiological Measurement Systems and Methods Group, BioMediTech
Contributors: Kekonen, A., Bergelin, M., Eriksson, J., Ylänen, H., Kielosto, S., Viik, J.
Number of pages: 4
Pages: 175-178
Publication date: 17 Nov 2016

Host publication information

Title of host publication: 2016 15th Biennial Baltic Electronics Conference (BEC)
Publisher: IEEE
ISBN (Print): 978-1-5090-1394-4
ISBN (Electronic): 978-1-5090-1393-7
Keywords: Wound healing, Bioimpedance, Mapping, Chronic wound

Bibliographical note

JUFOID=72715

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Bispectrum-based demodulation technique using triple-channel heterodyning of triplet-signal

Paper is dedicated to novel bispectrum-based demodulation technique by using triple-channel heterodyning of triplet-signals. Test statistics used for triplet-signals detection and discrimination are evaluated in the form of the bimagnitude peak values. Experimental study of noise immunity in bispectrum-based digital communication system is performed for suggested triple-channel heterodyning technique. Bit error rate (BER) values are computed under additive Gaussian noise influence in radio communication link for wide variations of input signal-to-noise ratio (SNR).

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Signal Processing, Research group: Algebraic and Algorithmic Methods in Signal Processing AAMSP, Signal Processing Research Community (SPRC), National Aerospace University
Contributors: Naumenko, V., Solodovnik, V., Totsky, A., Zelensky, A., Astola, J.
Number of pages: 3
Pages: 224-226
Publication date: 14 Dec 2015

Host publication information

Title of host publication: 2015 Second International Scientific-Practical Conference Problems of Infocommunications Science and Technology (PIC S&T)
Publisher: IEEE
ISBN (Print): 9789669751928
ASJC Scopus subject areas: Computer Science (miscellaneous), Computer Science Applications
Keywords: bispectrum, digital communication system, noise imunity, three-channel heterodyning, triplet-signal
Source: Scopus
Source ID: 84962840376

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Blind estimation of speckle variance in synthetic aperture radar images

A task of blind estimation of multiplicative noise (speckle) variance in multi-look images acquired by radars with synthesized aperture array is considered. It is shown that there are several factors affecting accuracy of such estimation. The main of them are spatial correlation of the speckle, complexity of an analyzed image and peculiarities of a method used. Spatial and spectral domain approaches are analyzed. It is shown that for both approaches spatial correlation of the speckle is to be estimated and taken into account. Results for real life TerraSAR-X data are presented as illustrations and for analyzing methods' accuracy.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Tampere University of Technology, Department of Signal Processing, Research group: Computational Imaging-CI, Signal Processing Research Community (SPRC), National Aerospace University
Contributors: Abramova, V. V., Kozhemiakin, R., Abramov, S. K., Lukin, V. V., Zelensky, A. A., Egiazarian, K.
Publication date: 25 Jun 2015

Host publication information

Title of host publication: 2015 International Conference on Antenna Theory and Techniques: Dedicated to 95 Year Jubilee of Prof. Yakov S. Shifrin, ICATT 2015 - Proceedings
Publisher: The Institute of Electrical and Electronics Engineers, Inc.
ISBN (Print): 9781479985579
ASJC Scopus subject areas: Electrical and Electronic Engineering, Computer Science Applications
Keywords: blind estimation, multi-look, SAR, speckle variance

Bibliographical note

EXT="Lukin, V. V."

Source: Scopus
Source ID: 84939434768

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Building Codes and Demand Response of Energy Use

Buildings are an essential part of the wider energy system. A significant share of electricity consumption occurs in buildings. Traditionally buildings have been places where electricity is consumed. Now they have a growing role also as a location where renewable energy production, such as solar power, occurs.

Demand response means the voluntary actions that are taken on the customer side as a response to something on the demand side. In practice, demand response can involve, for example, reducing the energy consumption during the peak times of the larger energy system or shifting the timing of the building’s energy consumption by synchronizing it with local renewable energy production’s profile inside the building. The building codes of Finland direct the designers’ energy-related solutions both in new construction and licenced renovations.

In this conceptual paper the literature related to demand response and regulation is reviewed, and it is discussed what kind of a role the building codes could have in advancing the buildings’ preconditions for demand response. Demand response is currently brought out in EU directives in the regulation with relation to network operators. However, preparedness for demand response could also be advanced by giving more attention to the timing of power use in the building codes.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research group: Capacity Development of Water and Environmental Services CADWES, Research group: Real estate development, Department of Electrical Engineering, Research area: Power engineering, Lappeenranta University of Technology, Tampere University of Applied Science
Contributors: Sorri, J., Heljo, J., Järventausta, P., Honkapuro, S., Harsia, P.
Number of pages: 14
Pages: 8-21
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the CIB World Building Congress 2016: Volume IV : Understanding Impacts and Functioning of Different Solutions
Volume: 4
Publisher: Tampere University of Technology. Department of Civil Engineering
Editors: Nenonen, S., Junnonen, J.
ISBN (Electronic): 978-952-15-3744-8
Keywords: building codes, demand response, energy law, energy use, power
URLs: 

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Building energy retrofits, occupant health and wellbeing

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Research group: Building Physics, Department of Civil Engineering, Research area: Structural Engineering, Natl Inst Hlth & Welf, Finland National Institute for Health & Welfare, Dept Environm Hlth
Contributors: Haverinen-Shaughnessy, U., Pekkonen, M., Turunen, M., Aaltonen, A., Leivo, V.
Number of pages: 9
Pages: 679-687
Publication date: 2016

Host publication information

Title of host publication: CIB World Building Congress 2016 Proceedings : Volume 2 Environmental Opportunities and challenges - Constructing commitment and acknowledging human experiences
Volume: 2
Publisher: Tampere University of Technology. Department of Civil Engineering
Editors: Prins, M., Wamelink, H., Giddings, B., Ku, K., Feenstra, M.
ISBN (Electronic): 978-952-15-3742-4

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Business analytics enabling future insights in the private healthcare

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Information and Knowledge Management, Research group: Business Data Research Group
Contributors: Ratia, M., Myllärniemi, J.
Publication date: 2019

Host publication information

Title of host publication: Proceedings of 14th IFKAD 2019 conference : Matera, Italy, 5-7 June, 2019
Publisher: IKAM Centro Studi & Ricerche
ISBN (Electronic): 978-88-96687-12-3

Publication series

Name: Proceedings IFKAD
Publisher: IKAM Centro Studi & Ricerche
ISSN (Print): 2280-787X

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Business catalysts for the Circular Economy innovations

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial Engineering and Management, Research group: Center for Innovation and Technology Research
Contributors: Aarikka-Stenroos, L., Ranta, V.
Publication date: Jun 2019

Host publication information

Title of host publication: Proceedings of The XXX ISPIM INNOVATION CONFERENCE - Celebrating Innovation - 500 Years Since Da Vinci : 16-19 June 2019 - Florence, Italy
Publisher: International Society for Professional Innovation Management ISPIM
ISBN (Print): 978-952-335-351-0

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Business intelligence approach – a practical tool for competence based curriculum development

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial and Information Management, Research group: Knowledge and Learning Research Center, Research group: Business Data Research Group, Research group: Cost Management Center, Research group: Center for Research on Operations Projects and Services
Contributors: Myllärniemi, J., Helander, N., Hellsten, P., Mahlamäki, T., Repo, S.
Number of pages: 17
Pages: 6387-6393
Publication date: 2017

Host publication information

Title of host publication: EDULEARN17 Proceedings. 9th International Conference on Education and New Learning Technologies : 3-5 July, 2017, Barcelona, Spain
Publisher: IATED
ISBN (Print): 978-84-697-3777-4

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Business intelligence process model revisited

Today many organizations have come to value knowledge as a production factor. Thus, there is a constant need for getting the information in and sorted. Business intelligence (BI) is a process for systematic acquiring, analyzing, and disseminating data and information from various sources to gain understanding about the business's environment. This is required for supporting decisions for achieving organization's business objectives. Literature has introduced models for planning and executing BI. However, as business environments and technologies evolve in a rapid pace, are the models still applicable? Not all recent issues are taken into consideration in the previous models. BI is considered to be integrated into business processes, so the similar evolution is expected to take place. There are two studies investigating BI instigating this study, but there are still questions to be answered. Literature on different models and findings of these studies were combined to form a vision to better match reality. Various issues like users' active involvement, real-time analysis and presentation, and social media resources were brought up. Practitioners can use the approach to assess their current state of BI activities or planning the organization of BI program.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Information and Knowledge Management
Contributors: Hellsten, P., Myllärniemi, J.
Number of pages: 8
Pages: 341-348
Publication date: 2019

Host publication information

Title of host publication: IC3K 2019 - Proceedings of the 11th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management
Publisher: SCITEPRESS
Editors: Bernardino, J., Salgado, A., Filipe, J.
ISBN (Electronic): 9789897583827

Publication series

Name: IC3K 2019 - Proceedings of the 11th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management
Volume: 3
ASJC Scopus subject areas: Software
Keywords: Business Intelligence, Business Intelligence Process Model, Decision-Making, Organizational Development
Source: Scopus
Source ID: 85074178202

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Business models in the circular economy: a structured multiple-case analysis

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Industrial Management, Research group: Center for Innovation and Technology Research
Contributors: Ranta, V., Aarikka-Stenroos, L., Mäkinen, S.
Publication date: Dec 2016

Host publication information

Title of host publication: Proceedings of ISPIM Innovation Summit, Kuala Lumpur, Malaysia. The International Society for Professional Innovation Management (ISPIM) : 4-7 December 2016
ISBN (Electronic): 978-952-265-931-6

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Bus Transportation Accessibility - Does It Impact Housing Values?

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research group: Real estate development, Research group: Capacity Development of Water and Environmental Services CADWES
Contributors: Kurvinen, A., Sorri, J.
Number of pages: 11
Pages: 321-331
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the CIB World Building Congress 2016 : Understanding impacts and functioning of different solutions
Volume: IV
Place of publication: Tampere
Publisher: Tampere University of Technology. Department of Civil Engineering
Editors: Nenonen, S., Junnonen, J.
ISBN (Electronic): 978-952-15-3744-8
ASJC Scopus subject areas: Economics, Econometrics and Finance (miscellaneous), Civil and Structural Engineering
Keywords: bus stops, bus traffic, housing prices, public transportation, residential property values, traffic related zones, urban form
URLs: 

Bibliographical note

This paper won World Building Congress 2016 Best Paper Award.

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Campus retrofitting (CARE) methodology: a way to co-create future learning environments

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research group: Digitalization in the real estate and construction sector
Contributors: Nenonen, S., Eriksson, R., Niemi, O., Junghans, A., Nielsen, S. B., Lindahl, G.
Number of pages: 12
Pages: 738-749
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the 20th CIB World Building Congress 2016 : May 30-June 3, 2016, Tampere, Finland
ISBN (Electronic): 978-952-15-3742-4
Keywords: Universities, Space management, Facilities management, Space design
Source: Bibtex
Source ID: urn:3d581eee21d4292b781da57acb1ad288

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Capturing knowledge from research projects: From project reports to storytelling

Research projects are essential tools for creating knowledge and fueling societal developments. Consequently, research efforts are consistent with requirements from accepted scientific methods as they are exhaustively recorded and stored. Traditional approaches are equally effective in helping assess the robustness of research methods. However, approaches to recording research projects leave behind a wealth of tacit knowledge and contextual information. Tacit knowledge and contextual information are essential to enable the development of individual researchers and research teams, which in turn have the potential to increase productivity, effectiveness and impact of future research. Found within the project management literature is the idea of utilizing storytelling to record projects' lessons learned. This paper's main research question is “how would a storytelling framework for capturing and sharing knowledge and contextual information improve organizational memory and the management of research projects?” The framework will be piloted at Canadian, Finnish, and Japanese universities. The effectiveness of the framework will be assessed by comparing it with established procedures to record research projects. In terms of organization, this paper will include a review of the literature, a description of the logic and application of the framework, findings from pilot studies, next steps, and opportunities for future research.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Industrial Management, Research group: Center for Innovation and Technology Research
Contributors: Machado, M. A., Magnier-Watanabe, R., Peltola, T.
Number of pages: 10
Pages: 2048-2057
Publication date: Sep 2016

Host publication information

Title of host publication: 2016 Portland International Conference on Management of Engineering and Technology (PICMET)
Publisher: IEEE
ISBN (Print): 978-1-5090-3595-3
Keywords: Technological innovation, Technology management
Source: Bibtex
Source ID: urn:e6b6fba93971fe08c9732ef2e4b6d809

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Car Type Recognition with Deep Neural Networks

In this paper we study automatic recognition of cars of four types: Bus, Truck, Van and Small car. For this problem we consider two data driven frameworks: a deep neural network and a support vector machine using SIFT features. The accuracy of the methods is validated with a database of over 6500 images, and the resulting prediction accuracy is over 97 %. This clearly exceeds the accuracies of earlier studies that use manually engineered feature extraction pipelines.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Signal Processing, Research group: Vision
Contributors: Huttunen, H., Shokrollahi Yancheshmeh, F., Chen, K.
Pages: 1115-1120
Publication date: Jun 2016

Host publication information

Title of host publication: 2016 IEEE Intelligent Vehicles Symposium, IV 2016
Publisher: IEEE
ISBN (Print): 9781509018215

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Cavitation erosion, slurry erosion and solid particle erosion performance of metal matrix composite (MMC) coatings sprayed with modern high velocity thermal spray processes

Thermally sprayed metal-matrix composite (MMC) coatings are widely used to protect components and surfaces against wear in various applications. Hard and wear resistant coatings increase the component lifetime and allow the refurbishment of the worn components. This produces significant savings and promotes ecological manufacturing. The current state-of-theart coatings are produced with high velocity oxygen-fuel (HVOF) spray processes, while modern high velocity air-fuel (HVAF) spray process has become increasingly available in production and research. The current study focuses on the performance of tungsten carbide (WC-10Co4Cr) and chromium carbide (Cr3C2-25NiCr) based MMC coatings sprayed with gaseous and liquid fuelled HVOF processes and a modern HVAF spray process. Two powder feedstock types, i.e. dense particles with fine carbides and porous particles with coarse carbides, were selected for both compositions. The results show significant improvements especially for WC-10Co4Cr coatings sprayed with HVAF when compared to HVOF sprayed coatings. In addition, Cr3C2-25NiCr coatings sprayed from the dense powder resulted in improved wear resistance compared to conventional feedstock powder.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Materials Science, Research group: Surface Engineering, Research group: Materials Characterization, VZÚ Plzeh, University of West Bohemia
Contributors: Matikainen, V., Rubio, S., Ojala, N., Koivuluoto, H., Schubert, J., Houdková, S., Vuoristo, P.
Number of pages: 3
Pages: 1161-1163
Publication date: 1 Jan 2017

Host publication information

Title of host publication: Materials Science and Technology Conference and Exhibition 2017, MS and T 2017 : October 8-12, 2017, Pittsburgh, Pennsylvania USA
Volume: 2
Publisher: Association for Iron and Steel Technology, AISTECH
ISBN (Electronic): 9781510850583
ASJC Scopus subject areas: Mechanics of Materials, Materials Science (miscellaneous), Energy Engineering and Power Technology
Keywords: Cavitation erosion, Coating, Metal matrix composite, Slurry erosion, Thermal spray
Source: Scopus
Source ID: 85047650405

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

CBRN Defense Using THz Pulse Trains from Semiconductor Disk Lasers

We propose THz generation from a photoconductive antenna illuminated by a train of optical pulses with a pulse repetition rate that corresponds to the desired THz frequency. This new method of THz generation can be seen as a hybrid between the conventional optical THz generation methods, where the optical source is either a heterodyne signal from two continuous wave lasers or a single short pulse. Therefore, the method holds promise for generating both coherent broadband and narrow-linewidth continuous wave THz radiation. The high-repetition rate optical pulse train is obtained from a semiconductor disk laser harmonically mode-locked by a semiconductor saturable absorber mirror and an intracavity etalon. Optical pulse trains with pulse repetition rates from 190 GHz to 580 GHz are demonstrated at an average optical output power of 1 W. This power level is enough for driving full arrays of photoconductive antennas. The approach may provide a compact and powerful THz source for CBRN defense.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Optoelectronics Research Centre, Research group: Ultrafast and intense lasers
Contributors: Saarinen, E.
Publication date: 2015

Host publication information

Title of host publication: NATO ARW on THz Diagnostics of CBRN effects and Detection of Explosives & CBRN : Proceedings of the NATO ARW on Detection of Explosives and CBRN

Publication series

Name: NATO Science for Peace and Security Series B: Physics and Biophysics
Publisher: Springer
ISSN (Electronic): 1874-6500

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Challenges Facing BIM Education: Development of Appropriate Teaching and Learning Resources

Building Information Modelling (BIM) is becoming the new norm in the AEC industry and also part of many construction project management (CPM) programmes. In terms of teaching BIM there is the need for specific resources in explaining the theoretical principles of BIM, BIM tools (authoring, audit and analysis) and building models themselves. Theoretical resources that are available for education in the form of books, articles and websites are easy and straightforward to locate. Likewise a good share of various tools are available for educational purposes. On the other hand, actual building models represent a challenge in terms of preparing and optimising usage of the model for high quality educational purposes. This paper addresses the difficulty in walking the narrow line between an industry ready BIM versus a BIM that is good for student learning and offers a realistic and practical, but simultaneously achievable learning environment. Conducting a case study in an undergraduate CPM education setting, three approaches for obtaining BIM resources were identified with various challenges and benefits. A combination of internally developed models for early exposure and industry models for later courses is proposed.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research group: Digitalization in the real estate and construction sector, Research group: Capacity Development of Water and Environmental Services CADWES, Research group: Real estate development
Contributors: Puolitaival, T., Forsythe, P., Kähkönen, K.
Publication date: 2015

Host publication information

Title of host publication: RICS COBRA AUBEA 2015 : The Construction, Building and Real Estate Research Conference of the Royal Institution of Chartered Surveyors
Place of publication: London
Publisher: Royal Institution of Chartered Surveyors
ISBN (Print): 978-1-78321-071-8

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Challenges in developing data-based value creation

Understanding data-based value creation helps organizations to enhance its decision-making and to renew their business operations. However, organizations aiming to use modern data analytics face several severe challenges that are not usually so evident or visible beforehand. In this paper we study a Finnish manufacturing company's data empowerment and information and knowledge management practices in order to identify the potential challenges related to modern data-based value creation within industrial context. The empirical data is consisted of group discussions, relevant data sets acquired from the case company's information systems, and lastly, 12 thematic interviews of the key actors in the company in relation to service development. The study provides valuable insights for managing service development and decision-making and creates understanding on data-based value creation. Achieved understanding provides meaningful knowledge for organizations utilizing or having plans to utilize, for example, data analytic methods in their businesses.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Information and Knowledge Management
Contributors: Myllärniemi, J., Helander, N., Pekkola, S.
Number of pages: 7
Pages: 370-376
Publication date: 2019

Host publication information

Title of host publication: IC3K 2019 - Proceedings of the 11th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management
Publisher: SCITEPRESS
Editors: Bernardino, J., Salgado, A., Filipe, J.
ISBN (Electronic): 9789897583827

Publication series

Name: IC3K 2019 - Proceedings of the 11th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management
Volume: 3
ASJC Scopus subject areas: Software
Keywords: Case Study, Data-based Value Creation, Information Management Process, Knowledge Management
Source: Scopus
Source ID: 85074145799

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Characterising the industrial context of engineering change management

Engineering changes (EC) and their management (ECM) can be categorized from several points of view. In this paper an EC is mainly considered from the position in lifecycle of the object of change: NPD vs. serial production. The performance aspects of engineering change processes emphasize the balancing of speed of the processes and the communication and assessment of consequent changes. ECM practices are studied by comparing two case companies. The cases indicate ECM is highly related to the organization, history and strategy of a company. The increased efficiency in engineering changes is aspired by streamlined ECM in new product development, while enhanced ECM processes apparently batch ECs for increased overall effectivity. The mutual challenge for the studied companies is that the NPD projects result with a set of change requests for serial production.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Mechanical Engineering and Industrial Systems, VTT Technical Research Centre of Finland
Contributors: Pulkkinen, A., Huhtala, P., Leino, S., Anttila, J. P., Vainio, V. V.
Number of pages: 10
Pages: 618-627
Publication date: 2016

Host publication information

Title of host publication: Product Lifecycle Management in the Era of Internet of Things : 12th IFIP WG 5.1 International Conference, PLM 2015, Doha, Qatar, October 19-21, 2015, Revised Selected Papers
Publisher: Springer New York LLC
ISBN (Print): 9783319331102

Publication series

Name: IFIP Advances in Information and Communication Technology
Volume: 467
ISSN (Print): 1868-4238
ASJC Scopus subject areas: Information Systems and Management
Keywords: Case study, Comparison, ECM

Bibliographical note

EXT="Leino, Simo-Pekka"

Source: Scopus
Source ID: 84964894186

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Characterizing the Context of Use in Mobile Work

The context of use has been widely acknowledged as important when designing and evaluating systems for work related activities. This paper describes in case of mobile news making the synthesized findings on the context of use. Findings are categorized to five components and nineteen subcomponents and characterized with examples from our studies. The presented findings validate a previously presented model for context of use in mobile HCI, extend it, and elaborate the definitions for the components. The presented elaborated model can be applied by academics and practitioners in development, research and evaluation activities from identifying requirements to evaluating systems for mobile work. Findings support understanding what circumstances and how they can contribute to user experience and acceptance of designed systems.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Pervasive Computing, Research area: User experience, Augmented Human Activities (AHA)
Contributors: Väätäjä, H.
Number of pages: 167
Pages: 97-113
Publication date: 2015

Host publication information

Title of host publication: Human Work Interaction Design. Work Analysis and Interaction Design Methods for Pervasive and Smart Workplaces : 4th IFIP 13.6 Working Conference, HWID 2015, London, UK, June 25-26, 2015, Revised Selected Papers
Publisher: Springer Verlag
ISBN (Print): 978-3-319-27047-0
ISBN (Electronic): 978-3-319-27048-7

Publication series

Name: IFIP Advances in Information and Communication Technology
Volume: 468
ISSN (Print): 1868-4238
ASJC Scopus subject areas: Computer Science (miscellaneous)
Keywords: human-computer interaction, human-technology interaction, work, mobile work, CONTEXT, context of use, journalism, smartphone, news, news making
Electronic versions: 

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Charged cable-system ESD event

A charged electronic system failed while it was connected to a USB port. The resulting discharge current waveform had a sub-nanosecond initial peak that bypassed on-board protection devices. In this study the ESD stress waveform is analyzed with simulation and measurement methods.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering
Contributors: Tamminen, P., Viheriäkoski, T.
Publication date: 18 Oct 2016

Host publication information

Title of host publication: 2016 38th Electrical Overstress/Electrostatic Discharge Symposium (EOS/ESD)
Publisher: IEEE
ISBN (Electronic): 978-1-5853-7289-8
Keywords: cable shielding, cables (electric), electromagnetic shielding, electrostatic discharge, peripheral interfaces, ESD stress waveform, USB port, charged cable system ESD event, charged electronic system, discharge current waveform, on-board protection devices, subnanosecond initial peak, Cable TV, Cable shielding, Current measurement, Discharges (electric), Power cables, Universal Serial Bus, Wires
Source: Bibtex
Source ID: urn:5e9eb39001154b3f7501d98bb2d14c27

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Charge relaxation of slowly dissipative polymers

Charge relaxation times of solid planar polymers were assessed with different charging methods in a controlled environment. Electrically isolated samples had relatively long relaxation periods. The longest measurement sequence was 62 hours. An electrostatic behavior of the samples under test was then characterized in a changing electrostatic field.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering
Contributors: Viheriäkoski, T., Kärjä, E., Hillberg, J., Tamminen, P.
Number of pages: 9
Pages: 1-9
Publication date: 18 Oct 2016

Host publication information

Title of host publication: 2016 38th Electrical Overstress/Electrostatic Discharge Symposium (EOS/ESD)
Publisher: IEEE
ISBN (Electronic): 978-1-5853-7289-8
Keywords: electric charge, electrostatics, polymers, charge relaxation, electrical isolated sample, electrostatic field behavior, slowly dissipative polymer, solid planar polymer, time 62 hour, Charge measurement, Charge transfer, Electric potential, Electrodes, Electrostatics, Ions
Source: Bibtex
Source ID: urn:dd06edd7b8b73b5d55aa28c271275556

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Circularly Polarized Textile Antenna For 2.45 GHz

This paper presents a circularly polarized antenna on thin and flexible Denim substrate for Industrial, Scientific and Medical (ISM) band and Wireless Body Area Network (WBAN) applications at 2.45 GHz. Copper tape is used as the conductive material on 1 mm thick Denim substrate. Circular polarization is achieved by introducing rectangular slot along diagonal axes at the center of the circular patch radiator. Bandwidth enhancement is done using partial and slotted ground plane. The measured impedance bandwidth of the proposed antenna is 6.4 % (2.42 GHz to 2.58 GHz) or 160 MHz. The antenna exhibits good radiation characteristics with gain of 2.25 dB. Simulated and measured results are presented to validate the operability of antenna within the proposed frequency bands.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering, Research group: Wireless Identification and Sensing Systems Research Group, Sensing Systems for Wireless Medicine (MediSense), Department of Electrical Engineering, University of California, Los Angeles, California, USA
Contributors: Rizwan, M., Rahmat-Samii, Y., Ukkonen, L.
Number of pages: 2
Pages: 51-52
Publication date: 21 Sep 2015

Host publication information

Title of host publication: Circularly Polarized Textile Antenna For 2.45 GHz
Publisher: IEEE
ISBN (Electronic): 978-1-4799-8543-2
Keywords: Denim, Industrial, Scientific and Medical (ISM) band, Wireless Body Area Network (WBAN), Textile antenna, Circular Polarization

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Clothing-Integrated Passive RFID Strain Sensor Platform for Body Movement-Based Controlling

This paper introduces the fabrication and wireless performance evaluation of a passive ultra-high frequency (UHF) radiofrequency identification (RFID)-based strain sensor platform, which is designed for body movement-based human-technology interaction. The used RFID platform is fabricated from electro-textile materials and can thus be seamlessly integrated into clothing. A two-part antenna structure is utilized in this work to avoid the reliability challenges caused by mechanical stresses that clothing-integrated electronics need to endure. The fabricated sensor has an initial peak read range of 5 meters, which is an excellent result for on-body performance. Further, the platform is functional throughout the global UHF RFID frequency band. During elongation, the peak read range of the sensor has a significant decrease, but it is still readable from distances of 2.5 meters. Thus, this sensor can be read wirelessly from a convenient distance, when considering its practical use in body movement-based controlling of digital devices. The wireless performance of the sensor platform has a significant change caused by arm elongation, which based on our initial results can be clearly read from the changed backscattered signal. Thus, based on these preliminary results, our sensor platform shows potential as a passive clothing-integrated controller, which can turn simple gestures into inputs for digital devices.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: BioMediTech, Research group: Wireless Identification and Sensing Systems Research Group
Contributors: He, H., Chen, X., Ukkonen, L., Virkki, J.
Number of pages: 4
Pages: 236-239
Publication date: 7 Nov 2019

Host publication information

Title of host publication: 2019 IEEE International Conference on RFID Technology and Applications (RFID-TA)
Publisher: IEEE
ISBN (Print): 978-1-7281-0590-1
ISBN (Electronic): 978-1-7281-0589-5
Keywords: Electro-textiles, human-technology interaction, passive UHF RFID technology, strain sensor, clothing-integrated electronics
Source: Bibtex
Source ID: 8892118

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Coarse-grained model of protein interaction for bio-inspired nano-communication

Bio-inspired nano-communication enables nanoscale devices to exchange information with each other by various natural mechanisms of data transfer. One of the most perspective way in bio-inspired communications is using the protein interactions, which refer from various proteins conformation states. In this paper, we describe our new coarsegrained model for protein conformation estimation based on fast transport task solving, developed algorithm and software which implement this model are provided.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering, Research group: Emerging Technologies for Nano-Bio-Info-Cogno, Wireless Communications and Positioning (WICO), Russian Academy of Sciences, ITMO University
Contributors: Knyazev, S., Tarakanov, S., Kuznetsov, V., Porozov, Y., Koucheryavy, Y., Stepanov, E.
Number of pages: 3
Pages: 260-262
Publication date: 6 Jan 2015

Host publication information

Title of host publication: 2014 6th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)
ISBN (Print): 978-1-4799-5291-5
ASJC Scopus subject areas: Computer Networks and Communications, Control and Systems Engineering
Keywords: biology signaling, coarse-grained model, nano-communications, protein conformation change
Source: Scopus
Source ID: 84932108897

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Co-creating digital services for citizens: Activity theory analysis

Smart city development relies heavily on creation of digital services that are available for the citizens and for the city authorities. At best, these services are co-created by the authorities, citizens and the digital solution supplier companies. Digital service co-creation is, however, a complex process and includes several contradictions due to presence of several stakeholders. In this paper, we present a case study of smart city initiated digital service co-creation process through the analytical lenses of activity theory.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Information and Knowledge Management, HAMK Design Factory, HAMK University of Applied Sciences, HAMK Smart Research Unit
Contributors: Jussila, J., Kukkamäki, J., Helander, N.
Number of pages: 6
Pages: 285-290
Publication date: 2019

Host publication information

Title of host publication: IC3K 2019 - Proceedings of the 11th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management
Publisher: SCITEPRESS
Editors: Bernardino, J., Salgado, A., Filipe, J.
ISBN (Electronic): 9789897583827

Publication series

Name: IC3K 2019 - Proceedings of the 11th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management
Volume: 3
ASJC Scopus subject areas: Software
Keywords: Activity Theory, Co-creation, Digital Service, Empirical Study

Bibliographical note

EXT="Jussila, Jari"

Source: Scopus
Source ID: 85074137289

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Color-distribution similarity by information theoretic divergence for color images

The divergence similarity between two color images is presented based on the Jensen-Shannon divergence to measure the color-distribution similarity. Subjective assessment experiments were developed to obtain mean opinion scores (MOS) of test images. It was found that the divergence similarity and MOS values showed statistically significant correlations.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Signal Processing, Research group: Vision, University of Niigata, KLab, Japan, K-JIST, Dongguk University, Seoul
Contributors: Murayama, M., Oguro, D., Kikuchi, H., Huttunen, H., Ho, Y. S., Shin, J.
Publication date: 17 Jan 2017

Host publication information

Title of host publication: 2016 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2016
Publisher: IEEE
ISBN (Electronic): 9789881476821
ASJC Scopus subject areas: Artificial Intelligence, Computer Science Applications, Information Systems, Signal Processing

Bibliographical note

JUFOID=72850

Source: Scopus
Source ID: 85013813769

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Combining Product Innovation With Service Innovation to Increase Value Created With a System

The focus in the businesses of manufacturing and selling technological devices has been increasingly shifting from USA and Europe towards Asiatic countries due to cost-effectiveness and lower costs of resources. In the areas where costs are inevitably higher, new measures have to be considered in order to be able to compete in the global economy. In this article, we study how can we utilize combined benefits of technological and service innovations in competing against the traditional product-oriented offerings. Product-service systems are integrated systems of products and services that create value through use for customers; the hypothesis in this article is that the efficiency of the business network can be increased by designing an integrated product-service system in comparison to the product-oriented approach. The hypothesis is studied via a real-life product-service system design case study of an automated recycling system, and system dynamics simulation is used to analyze the value created with the system in the related business network. In theory, product-service systems have many potential benefits in comparison to product-oriented offerings; identifying the benefits in practice in a case study increases the understanding of product-service systems design and facilitate their application in the industry.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Aalto University, Aalto Univ, Aalto University, Sch Engn, Dept Engn Design & Prod
Contributors: Ritola, T., Coatanea, E.
Number of pages: 10
Publication date: 2014

Host publication information

Title of host publication: Proceedings of the ASME international mechanical engineering congress and exposition, 2013, vol 12
Publisher: AMER SOC MECHANICAL ENGINEERS
ISBN (Print): 978-0-7918-5641-3
Source: WOS
Source ID: 000360320700022

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Commercialising reclaimed materials in earthworks – guidelines for productization and the process of appending these materials in the Finnish national code of practice

To decrease the use of non-renewable natural resources as well as environmental effects of earth-works, natural aggregate materials can be replaced with recycled materials acquired from surplus soil, industrial by-products and waste, etc. When wishing to increase the usage of these reclaimed materials (=“UUMA”-material), the usage must be straightforward for developers, designers and constructors alike. To make this possible, the materials must have design guidelines for their appro-priate applications. They must be productized and CE marked or otherwise authorized, and the con-struction guidelines for the materials must be included in the Finnish general specifications for in-frastructural construction works (InfraRYL). As productization is especially important in increasing the usage of UUMA materials, guidelines for vendors are being drawn that present information on commercializing reclaimed materials to be used in earthworks. The guidelines for productization are being prepared in the Finnish national UUMA2 programme (2013-2017, www.uuma2.fi), which was created to promote the use of recycled materials in earthworks.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research area: Infrastructure Construction, Research group: Earth Constructions, Research group: Track Structures, Ramboll Finland Ltd.
Contributors: Koivisto, K., Forsman, J., Ronkainen, M., Lahtinen, P., Kolisoja, P., Kuula, P.
Number of pages: 10
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the 17th Nordic Geotechnical Meeting Reykjavik Iceland : Challenges in Nordic Geotechnic 25th - 28th of May
Place of publication: Reykjavik
Publisher: Icelandic Geotechnical Society
ISBN (Electronic): 978-9935-24-002-6

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Comparative evaluation of radio propagation properties at 15 GHz and 60 GHz frequencies

Due to explosive growth in the mobile data demand, millimeter-wave (mmWave) spectrum is to become one of the key enablers for the next-generation 5G wireless. Accurate characterization of mmWave channels has crucial implications on 5G network planning — as compared to more conventional frequency bands — due to a higher impact that surrounding objects have on the radio propagation. In this work, we contribute mmWave channel measurements and compare our obtained results across several metrics of interests, mindful of previously standardized models. The proposed analysis is conducted for a typical mmWave system deployment operating at 15 and 60 GHz. The evaluation studies a difference between the obtained results for the two frequency bands considered, as well as verifies their predictability when utilizing modern modeling considerations.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Electronics and Communications Engineering, Research group: Emerging Technologies for Nano-Bio-Info-Cogno
Contributors: Solomitckii, D., Semkin, V., Naderpour, R., Ometov, A., Andreev, S.
Number of pages: 5
Pages: 91-95
Publication date: 1 Nov 2017

Host publication information

Title of host publication: 2017 9th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)
Publisher: IEEE
ISBN (Electronic): 978-1-5386-3435-6
Keywords: 3GPP, Antenna measurements, Delays, Optical attenuators, Optical transmitters, Receiving antennas, channel sounding, mmWave systems, practical measurements, radio propagation, urban deployments

Bibliographical note

jufoid=72315

Source: Bibtex
Source ID: urn:e3e92af655321f382b94981bdab749a2

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Comparing two methods for Urban Complexity calculation using Shannon-Wiener index

This study will compare the results of measuring Urban Complexity using Shannon-Wiener index in two different methods. Using a joint dataset retrieved from Foursquare API, we will measure the degree of urban complexity of every street 1. relating every amenity to the closest street segment in a computational way and then applying the calculation to the segments, and 2. applying the calculation to every cell of a grid that will be combined with the street network afterwards. The selected case study is the city of London and the dataset employed will be retrieved from Foursquare. Over 79,000 venues were collected and classified in over 660 categories. In order to proceed to the analysis, these 660 categories will be reduced to 10 based on the classification of activities observed in the public space from the traditional urban discipline. Then the urban complexity index of each Street segment of London will be measured as a simultaneous calculation of the density and diversity of collected and classified economic activities.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Architecture, University of Alicante, SPIN Unit
Contributors: López Baeza, J., Cerrone, D., Männigo, K.
Number of pages: 10
Pages: 369-378
Publication date: 2017

Host publication information

Title of host publication: Comparing two methods for Urban Complexity calculation using Shannon-Wiener index
Publisher: WIT Press

Publication series

Name: WIT Transactions on Ecology and The Environment
Volume: 226
ISSN (Print): 1743-3541
ISSN (Electronic): 1746-448X

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Comparison of food frequency questionnaire data and shopping records for the assessment of food intake

Questionnaires are typically used for collecting information
describing health behavior in areas such as diet, physical activity and sleep.
Utilization of the digital footprint, formed from an individual’s unique digital
activities, forms a potential new opportunity for describing lifestyle and
health-related behavior. We studied if passively collected shopping data
describes food intake when compared to food frequency questionnaire (FFQ)
data providing information on food and beverage consumption. For 4 out of 21
food groups the results were comparable. Shopping information from only one
department store chain gives only a partial picture of the food consumption and
differing family sizes add noise to the estimate. If the whole digital footprint
would be available, including detailed product-level shopping information from
all stores and restaurants, the food intake could probably be estimated more
accurately and applied e.g. in personalized coaching.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Faculty of Biomedical Sciences and Engineering, Faculty of Biomedical Sciences and Engineering, Tampere University of Technology, Institute for Molecular Medicine, FIMM, HiLIFE, University of Helsinki
Contributors: Kallonen, A., Nieminen, H., Das, S., Sallinen, R.
Pages: 25-30
Publication date: 27 Aug 2018

Host publication information

Title of host publication: Proceedings of Seventh International Conference on Well-Being in the Information Society: Fighting Inequalities (WIS 2018)
ISBN (Electronic): 978-952-12-3727-0

Publication series

Name: TUCS Lecture Notes
Volume: 28
ISSN (Electronic): 1797-8831
ASJC Scopus subject areas: Molecular Medicine
Keywords: Food intake assessment, shopping data, food frequency questionnaire, digital footprint

Bibliographical note

INT=TUT-BMT,"Das, Soumya"

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Compensation of PV generator output power fluctuations with energy storage systems

Photovoltaic generators (PVG) suffer from short-term intermittency of output power. With significant penetration of PV this intermittency can lead to power systems instability and power quality problems. Energy storage systems (ESS) can be used to compensate PV power fluctuations in order to mitigate these problems. In this paper ESS behavior, control and sizing have been investigated to mitigate instabilities caused by PV power plants operating in Northern European conditions through simulations that utilize measurements from the Tampere University of Technology (TUT) Solar PV power station research plant. Continuous synchronized measurements have been recorded with the irradiance and PV module temperature sensor network with a 10 Hz sampling frequency since June 2011. The ESS capacity and power requirements are derived from the simulations for different PVG sizes and PV power ramp rate (RR) limits. The results show how both capacity and power requirements decrease as functions of the RR limit and the PVG size. Also, interesting differences have been noticed compared to similar studies done in Southern European climate, which indicate that the operational climate of the PVG can have an effect on ESS sizing.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electrical Engineering, Research area: Power engineering, Tampere University of Technology
Contributors: Schnabel, J., Valkealahti, S.
Number of pages: 5
Pages: 2177-2181
Publication date: 14 Sep 2015

Host publication information

Title of host publication: 31st European Photovoltaic Solar Energy Conference and Exhibition (31st EU PVSEC), 14– 18 September, 2015, Hamburg, Germany
ISBN (Print): 3-936338-39-6
ASJC Scopus subject areas: Energy(all)

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Competence portfolio assessment of research and development center for regional development

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Pori Department, Research group: Business Ecosystems, Networks and Innovations
Contributors: Salminen, V., Kantola, J. I., Vanharanta, H.
Number of pages: 9
Pages: 701-708
Publication date: 2015

Host publication information

Title of host publication: 6th International Conference on Applied Human Factors and Ergonomics (AHFE 2015) and the Affiliated Conferences, AHFE 2015
Publisher: Elsevier

Publication series

Name: Procedia Manufacturing
Volume: 3
ISSN (Print): 2351-9789

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Composite Nonlinear Feedback Control of a Chemical Reactor

This paper studies the application of composite nonlinear feedback (CNF) control for a continuous time stirred tank reactor. Inside the reactor, an exothermic chemical reaction occurs, which requires cooling when concentration is commanded from low to high conversion rate to prevent a thermal runaway. A full-state CNF controller is designed for adjusting the temperature of the cooling jacket using concentration and temperature measurements. A continuous time gain-scheduled cascade controller, as well as a model predictive controller (MPC) is also fabricated for comparison. The gain-scheduled cascade controller has a proportional-integral (PI) controller as a primary loop controller, and a P-controller as a secondary loop controller. The simulation results show that the CNF controller is able to offer the best overall tracking performance as measured by the integral-of-absolute-error (IAE) criterion. In addition, the CNF controller does not need gain-scheduling for tuning purposes; the CNF controller is capable of changing its tuning as a function of control error only.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Research area: Information Systems in Automation, Research area: Dynamic Systems, Department of Automation Science and Engineering
Contributors: Pyrhönen, V., Koivisto, H.
Publication date: 18 Mar 2015

Host publication information

Title of host publication: Proceedings of AutomaatioXXI, The Industrial Revolution of Internet – From Intelligent Devices to Networked Intelligence
Place of publication: Helsinki, Finland
Publisher: Suomen Automaatioseura ry
ISBN (Electronic): 978-952-5183-46-7

Publication series

Name: SAS julkaisusarja
Publisher: Finnish Society of Automation
Volume: 44
Keywords: exothermic reaction, nonlinear control, nonlinear dynamics, cascade control

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Comprehensive survey of similarity measures for ranked based location fingerprinting algorithm

Ranked Based Fingerprinting uses only ordering indices instead of actual Wi-Fi RSS values in order to make the algorithm insensitive to devices. A key component of the RBF algorithm is a similarity measure which is used to compare and find the closest ranked fingerprints. Previous papers study a few similarity measures; here we study 49 similarity measures in a test with a benchmark with publicly available indoor positioning database. For different similarity measures the positioning accuracy varies from 15.80 m to 55.22 m. The top 3 similarity measures are Lorentzian, Hamming and Jaccard. Hamming and Jaccard similarity measures have been studied in other papers while Lorenzian had not been studied with that kind of problems.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Automation and Hydraulic Engineering, Signal Processing, Research group: Positioning
Contributors: Minaev, G., Visa, A., Piche, R.
Number of pages: 4
Publication date: 2017

Host publication information

Title of host publication: Indoor Positioning and Indoor Navigation (IPIN), 2017 International Conference on
Publisher: IEEE
ISBN (Electronic): 978-1-5090-6299-7

Bibliographical note

JUFOID=72210

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Computational wavelength resolution for in-line lensless holography: Phase-coded diffraction patterns and wavefront group-sparsity

In-line lensless holography is considered with a random phase modulation at the object plane. The forward wavefront propagation is modelled using the Fourier transform with the angular spectrum transfer function. The multiple intensities (holograms) recorded by the sensor are random due to the random phase modulation and noisy with Poissonian noise distribution. It is shown by computational experiments that high-accuracy reconstructions can be achieved with resolution going up to the two thirds of the wavelength. With respect to the sensor pixel size it is a super-resolution with a factor of 32. The algorithm designed for optimal superresolution phase/amplitude reconstruction from Poissonian data is based on the general methodology developed for phase retrieval with a pixel-wise resolution in V. Katkovnik, "Phase retrieval from noisy data based on sparse approximation of object phase and amplitude", http://www.cs.tut.fi/∼lasip/DDT/index3.html.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Signal Processing, Department of Photonics and Optical Information Technology, ITMO University
Contributors: Katkovnik, V., Shevkunov, I., Petrov, N. V., Egiazarian, K.
Publication date: 2017

Host publication information

Title of host publication: Digital Optical Technologies 2017
Publisher: SPIE
Article number: 1033509
ISBN (Electronic): 9781510611153

Publication series

Name: Proceedings of SPIE
Volume: 10335
ISSN (Print): 0277-786X
ASJC Scopus subject areas: Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Computer Science Applications, Applied Mathematics, Electrical and Electronic Engineering
Keywords: Discrete optical signal processing, Image processing, Noise in imaging systems, Phase retrieval, Superresolution

Bibliographical note

jufoid=71479

Source: Scopus
Source ID: 85030715279

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Computer-supported collaborative learning: Praxes in new cell-oriented configurable PC-classroom

Currently, technology-enhanced learning environments are a research hotspot in engineering education. Universities invest in modern environments equipped with the newest audiovisual hardware, computers and web-technologies. These environments support learner-centred model of education, which highlights active role of learners, learning-by-doing, and collaborative learner autonomy in a democratic atmosphere. Therefore, traditional teacher-led classrooms can be transformed to more diverse and more creative environments in which teachers and learners have relatively different roles compared with the traditional classroom.

In this paper, we present layout, construction and hardware of our newly developed technology-mediated, configurable, and cell-oriented PC-classroom, which play a key role in our teaching development. We exemplify how the classroom has helped us to improve our automation science and control engineering education. To be more specific, we have adopted the well-known concept of computer-supported collaborative learning (CSCL), which concerns how students can learn together with the help of computers. We also demonstrate how redefining and redesigning the nature of activities occurring in modern learning environments can improve the effectiveness of contact teaching, and hence, allow learning episodes to be more impactful compared with the traditional teacher-led classroom. We would like to pinpoint that redefinition and redesign have allowed us, as teachers, to take the position of a facilitating guide, or mentor, which work in close cooperation with students, and thereby, is able to strengthen the knowledge level of students through intellectual face-to-face discussion as well as through technology-supported communication.

Furthermore, our new classroom has enabled hands-on, competitive, cyber-physical attack-defence events to be conducted, which improve our automation security training. The events have invited participants from industry and academia, but most importantly, they have involved students. During the events, we have offered opportunities for students to make demonstration-of-skills to the participants from business. As a consequence, the new environment has enabled acts of openings for university-business cooperation in terms of education and recruit, free of charge. To our experience and according to student feedback, our redefined ways of conducting teaching has improved student motivation as well as increased their timely investment towards learning activities, which has eventually translated to better grades and overall satisfaction.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Automation Science and Engineering, Research area: Information Systems in Automation
Contributors: Pyrh