基于相位旋转的SCMA码本优化方法

To solve the high bit error ratio (BER) problem under the condition of high overload of sparse code multiple access (SCMA), the influence of phase rotation on the SCMA code is studied firstly. Two schemes of optimizing the phase rotation angle are then proposed based on the controlled-distance among the constellation points of synthetic constellation. The first scheme is called the rotation based on maximizing minimum euclidean distance (M-rotation) and the second is the rotation based on exponential average (E-rotation). E-rotation achieves better BER performance than M-rotation, but M-rotation is outstanding at the case of high signal-to-noise ratio (SNR). With respect to the decoding complexity, both schemes have no distinction but E-rotation gets better performance than M-rotation when the partial extrinsic information transmission of MPA (PEIT-MPA) is adopted.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Electronics and Communications Engineering, Chongqing University of Posts and Telecommunications, Huawei Technologies Co., Ltd.
Contributors: Shao, K., Zhou, B., Wang, G., Yu, B.
Number of pages: 9
Pages: 2354-2362
Publication date: 2018
Peer-reviewed: Yes

Publication information

Journal: Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics
Volume: 40
Issue number: 10
ISSN (Print): 1001-506X
Ratings: 
  • Scopus rating (2018): CiteScore 0.58 SJR 0.198 SNIP 0.478
Original language: Chinese
ASJC Scopus subject areas: Control and Systems Engineering, Electrical and Electronic Engineering
Keywords: Codebook design, Phase rotation, Sparse code multiple access (SCMA), Synthetic constellation
Source: Scopus
Source ID: 85056877151

Research output: Contribution to journalArticleScientificpeer-review

Обзор параметрических методов позиционирования на основе концепции отпечатка пальца

General information

Publication status: Published
MoE publication type: A2 Review article in a scientific journal
Organisations: Department of Automation Science and Engineering, Research area: Dynamic Systems, Department of Mathematics, Research group: MAT Positioning, Research group: Positioning
Contributors: Müller, P., Raitoharju, M., Ali-Löytty, S., Wirola, L., Piche, R.
Pages: 3-35
Publication date: 2016
Peer-reviewed: Yes

Publication information

Journal: Giroskopiya I Navigatsiya
Volume: 24
Issue number: 1
ISSN (Print): 0869-7035
Original language: Russian

Bibliographical note

Translation of "A Survey of Parametric Fingerprint-Positioning Methods", Gyroscopy and Navigation, vol 7, issue 2, 2016, pp. 107-127.

Research output: Contribution to journalReview ArticleScientificpeer-review

Yliopistomatematiikan sähköisten tehtävien ja matemaattisen ajattelun kehittäminen

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Mathematics, Research group: Positioning, Research group: Computer Science and Applied Logics
Contributors: Myllykoski, T. J., Mattila, P., Ali-Löytty, S., Kaarakka, T., Viro, E.
Number of pages: 11
Pages: 46-56
Publication date: 2018
Peer-reviewed: Yes

Publication information

Journal: FMSERA Journal
Volume: 2
Issue number: 1
ISSN (Print): 2489-4583
Original language: Finnish

Research output: Contribution to journalArticleScientificpeer-review

Wood compression model for radial compression of earlywood and latewood

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Mechanical Engineering and Industrial Systems, Research group: Kokeellinen virtaustekniikka, Research area: Applied Mechanics, Department of Automation Science and Engineering, Research area: Dynamic Systems, Research area: Measurement Technology and Process Control
Contributors: Moilanen, C., Björkqvist, T., Saarenrinne, P.
Number of pages: 6
Pages: 261-266
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the XII Finnish Mechanics Days
Publisher: Rakenteiden Mekaniikan Seura ry
ISBN (Print): 978-952-93-5608-9
ISBN (Electronic): 978-952-93-5609-6

Bibliographical note

ORG=mei,0.5
ORG=ase,0.5

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

Wirelessly powered implantable system for wireless long-term monitoring of intracranial pressure

This paper presents the pressure readout results from a piezoresistive pressure sensor in a biological environment mimicking the human head properties for intracranial pressure (ICP) monitoring application. The piezoresistive pressure sensor is wirelessly powered through inductively coupled antennas. After successful activation of the sensor, the pressure readout is demonstrated from 0 mmHg to 30 mmHg with a resolution of one mmHg.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Faculty of Biomedical Sciences and Engineering, Research area: Dynamic Systems, Research group: Wireless Identification and Sensing Systems Research Group
Contributors: Khan, M. W. A., Björninen, T., Sydänheimo, L., Ukkonen, L.
Pages: 122-124
Publication date: 1 Mar 2017

Host publication information

Title of host publication: Proceedings of IEEE 2017 International Workshop on Antenna Technology
Publisher: IEEE
ISBN (Electronic): 978-1-5090-5176-2

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

Wireless Authentication using OPACITY Protocol

Authentication using wireless keys simplifies the user daily life and opens the door to a number of promising applications in the area of pervasive computing, Internet of Things and Tactile Internet. However, this approach raises several research challenges, including but not limited to: which communication technology to use, how to guarantee the relevant security level, and, last but not the least, how to integrate the wireless authentication systems into already deployed authorization solutions. In this paper, we address the above mentioned questions by proposing a wireless authentication solution based on the NFC-capable smartphone and using OPACITY authentication protocol that is compatible with existing access control mechanisms in OS Windows 8. We start with qualitative comparison of Bluetooth, RFID and NFC technologies in terms of applicability for wireless authentication. We then describe the OPACITY protocol in general, and its adaptation to wireless authentication scenario. We finally present the high-level architecture of our solution and highlight some Windows OS specifics we faced during the reference implementation. We believe that demonstrated interoperability between wireless authentication solution and existing access control mechanisms in modern OS provides an important step towards further development of advanced authentication methods, based on wireless keys.

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
Contributors: Petrov, V., Bezzateev, S., Zybin, V.
Pages: 253-258
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

Winner-Does-Not-Take-All: Selective Attention and Local Bias in Platform-Based Markets

We examine competition between platforms in platform-based markets with agent-based modeling. In our proposed model, a consumer adopts a platform that offers the most relative utility of competing platforms. More specifically, the utility is derived from the local direct network effects arising from the social network of the consumer and the indirect network effects arising from complementary products of the platform. We portray the consumer as selectively attentive and locally biased. We contrast the proposed model to several alternative models with empirical data from the competition between Sony’s PlayStation 3 and Microsoft’s Xbox 360 and show that the proposed model, where the aforementioned consumer characteristics, and platform pricing, explain the adoption decisions of consumers and thus the division of the market between platforms. We offer important insights on how the dynamics of competition on the macro-level emerge from micro-level interactions between consumers.

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, Lappeenranta University of Technology, Hanken School of Economics
Contributors: Huotari, P., Järvi, K., Kortelainen, S., Huhtamäki, J.
Publication date: Jan 2015

Host publication information

Title of host publication: Academy of Management Proceedings : Meeting Abstract Supplement
Publisher: Academy of Management

Publication series

Name: Academy of Management. Annual Meeting Proceedings
Publisher: Academy of Management
ISSN (Electronic): 2151-6561

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

Why don't one maximizes database utilization in product and service development in manufacturing?

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial and Information Management, Research group: Business Ecosystems, Networks and Innovations
Contributors: Väyrynen, H., Manu, M.
Number of pages: 13
Pages: 93-105
Publication date: 7 Jun 2017

Host publication information

Title of host publication: Proceedings of the 12th International Forum on Knowledge Asset Dynamics 2017 : St. Petersburg, Russia, 7-9 June 2017
Place of publication: St. Petersburg, Russia
ISBN (Print): 978-88-96687-10-9

Publication series

Name: Proceedings IFKAD
ISSN (Print): 2280-787X
Keywords: Technology adoption, DATABASE, customer oriented approach, Practice, Development

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

Who is who in Big Social Data? A Bibliographic Network Analysis Study

The aim of the study is to investigate who are advancing the knowledge on Big Social Data and the related concept of Social Big Data, ‘who’ are these people citing and building their work on, and what are the topics and outlets where the discussion takes place. For that purpose, data was extracted from Thomson Reuters Web of Science with the search term “Big Social Data” and “Social Big Data” spanning the years from 2012 to 2016. The search resulted in 58 articles in 39 different outlets. In order to go into the depth of Big Social Data and Social Big Data, co-author bibliographic
network analysis was performed on the extracted data. The co-author network analysis revealed 149 nodes (authors), and 308 edges (co-authoring relationships) between the authors. Betweenness centrality were calculated for the nodes to
demonstrate who are the central authorities and their domain on the topic of Big Social Data and Social Big Data. The visualisation based on co-author network analysis provides insight into the possible clusters of authors in the topics of Big
Social Data and Social Big Data. Co-citation analysis was performed for the combined network of Big Social Data and Social Big Data authors. This study was carried out using Ostinato process model for visual network analysis. The findings of the
study provide insights on the leading authorities (authors) advancing the knowledge in Big Social Data. From the community of Big Social Data three authorative clusters were identified, one with authors located in Singapore and Scotland, another with authors located in Denmark, and third based in London, England. The Social Big Data communities were mainly located in Asia, with two authorative clusters, one located in Japan, and another with authors located in South-Korea and Spain. The topic modelling uncovered that the themes discussed in Big Social Data and Social Big Data
communities were fairly similar, dealing with analysis of social media data in various ways. Most commonly the focus was on Twitter or Facebook data analysis. Further, the bibliometric analysis provides an indication for potential outlets (Journals and Conferences) for Big Social Data and Social Big Data themed articles, as well as, their impact on the field.

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
Contributors: Jussila, J., Menon, K., Gupta, J., Kärkkäinen, H.
Pages: 161-169
Publication date: 3 Jul 2017

Host publication information

Title of host publication: Proceedings of the 4th European Conference on Social Media ECSM 2017
Volume: 4
Place of publication: Reading, UK
Publisher: Academic Conferences and Publishing International Limited
ISBN (Print): 978-1-911218-46-3
ISBN (Electronic): 978-1-911218-47-0
ASJC Scopus subject areas: Computer Science(all)
Keywords: social media

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

White Knights of the Smart City

In this paper we will demonstrate how a science fiction storyboard was used as a means for delivering and discussing future technology and design innovations. We present a case in which an illustrated storyboard exemplified the interactions of an experienced-centered technology design concept - a winter caretaking system for a smart city and two devices that could assist its citizens. In the science fiction introduced, the emphasis is on the experience-centered design approach, particularly experiences relating to nurture, sympathy and control.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Pervasive Computing, Research area: User experience, VTT Tech Res Ctr Finland, VTT Technical Research Center Finland, Human Factors Complex Syst
Contributors: Kymäläinen, T., Sahar, F., Palviainen, J.
Number of pages: 12
Pages: 223-234
Publication date: 2014

Host publication information

Title of host publication: Workshop Proceedings of the 10th International Conference on Intelligent Environments
Publisher: IOS Press
Editors: Augusto, J., Zhang, T.
ISBN (Print): 978-1-61499-410-7

Publication series

Name: Ambient Intelligence and Smart Environments
Publisher: IOS PRESS
Volume: 18
ISSN (Print): 1875-4163
Keywords: Science-fiction prototype, storyboard, intelligent city, user experience design, experience-centered design
Source: WOS
Source ID: 000360238400028

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

What's inside a rubble pile asteroid? DiSCUS - A tomographic twin radar Cubesat to find out

A large fraction of asteroids with diameter d > 240 m are suspected to be loose piles of rocks and boulders bound together mainly by gravity and only weak cohesion. Still to date the size and distribution of voids and monolithic fragments inside these "rubble-piles" are not known. To perform a full tomographic interior reconstruction a bistatic CubeSat configuration has been investigated by Tampere University of Technology (TUT), Radar Systemtechnik GmbH (RST) and the Max Planck Institute for Solar System Research (MPS). The concept is based on two 6U CubeSats, both carrying an identical 1U sized stepped frequency radar. As stepped frequency radars can be built compact, require less power and generate less data volume compared to other radar applications they are well-suited for small satellite platforms. In 2017 the Concurrent Design Facility of ESA/ESTEC conducted two studies relevant for DISCUS. In the Small Planetary Probes (SPP) study DISCUS served as a reference payload for a piggyback mission to a Near-Earth Asteroid (NEA) or even a Main Belt Asteroid (MBA). The M-ARGO study investigated a stand-alone mission to a NEA, with a DISCUS sized instrument. Based on the spacecraft design of SPP and M-ARGO we could prove the instrument requirements as feasible and evaluate our science case from the orbits and mission duration that have been identified by these studies. Using inversion methods developed for medical tomography the data would allow to reconstruct the large scale interior structure of a small body. Simulations have shown that the measurement principle and the inversion method are robust enough to allow full reconstruction of the interior even if the orbits do not cover the entire surface of the asteroid. The measurement results of the mission will help to gain a better understanding of asteroids and the formation mechanisms of the solar system. In addition, the findings will increase the predictability of asteroid impact consequences on Earth and improve future concepts of asteroid deflection.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Computing Sciences, Research group: Inverse Problems, Max Planck Institute for Solar System Research, GomSpace A/S, 3D Profi GmbH, RST Radar Systemtechnik AG, University of Bern, MEW-Aerospace UG, GMV Innovating Solutions S.L, Royal Observatory of Belgium
Contributors: Bambach, P., Deller, J., Martel, J., Vilenius, E., Goldberg, H., Sorsa, L., Pursiainen, S., Takala, M., Wurster, A., Braun, H. M., Lentz, H., Jutzi, M., Wittig, M., Chitu, C. C., Ritter, B., Karatekin, O.
Publication date: 2018

Host publication information

Title of host publication: 69th International Astronautical Congress, IAC 2018

Publication series

Name: Proceedings of the International Astronautical Congress, IAC
ISSN (Print): 0074-1795
ASJC Scopus subject areas: Aerospace Engineering, Astronomy and Astrophysics, Space and Planetary Science

Bibliographical note

jufoid=85566

Source: Scopus
Source ID: 85065313725

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

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

Web-user-interface system utilizing rhmei and open data for a water quality analyzer

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Research group: Software Engineering and Intelligent Systems, Pervasive Computing, Keio University, Japan, Global Environmental System Leaders Program, Keio University, Japan
Contributors: Sillberg, P., Veesommai, C., Soini, J., Jaakkola, H.
Number of pages: 8
Pages: 444-451
Publication date: 2017

Host publication information

Title of host publication: The Proceedings of the 27th International Conference on Information Modelling and Knowledge Bases, EJC 2017 : June 5-9, 2017, Krabi, Thailand
Publisher: Sirindhorn International Institute of Technology, Thammasat University, Thailand
Editors: Sornlertlamvanich, V., Chawakitchareon, P., Hansuebsai, A., Koopipat, C., Kiyoki, Y., Kangassalo, H., Thalheim, B., Yoshida, N.
ISBN (Electronic): 978-616-407-165-0

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

Web User Interface Implementation Technologies: An Underview

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Pervasive Computing, Research area: Software engineering, University of Lugano (USI), Università della Svizzera Italiana, Nokia Technologies, University of Helsinki
Contributors: Taivalsaari, A., Mikkonen, T., Systä, K., Pautasso, C.
Number of pages: 10
Pages: 127-136
Publication date: 5 Sep 2018

Host publication information

Title of host publication: 14th International Conference on Web Information Systems and Technologies
Publisher: SCITEPRESS
ISBN (Print): 978-989-758-324-7

Bibliographical note

EXT="Taivalsaari, Antero"
EXT="Mikkonen, Tommi"

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

Water services heritage and institutional diversity

General information

Publication status: Published
MoE publication type: A3 Part of a book or another research book
Organisations: Department of Civil Engineering, Research group: Industrial Bioengineering and Applied Organic Chemistry
Contributors: Katko, T. S., Juuti, P., Pietilä, P., Rajala, R.
Publication date: 2015

Host publication information

Title of host publication: Water and Heritage: material, conceptual and spiritual connections
Publisher: Sidestone Press
Editors: Willems, W., van Schaik, H.
ISBN (Print): 9789088902789

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

Voimalaitosten reaaliaikainen ympäristövaikutusten monitorointi

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, Suomen ympäristökeskus SYKE - Finnish Environment Institute, IndMeas Oy, Helen Oy
Contributors: Majanne, Y., Korpela, T., Judl, J., Koskela, S., Laukkanen, V., Häyrinen, A., Salminen, O.
Number of pages: 6
Pages: 1-6
Publication date: 2015

Host publication information

Title of host publication: Automaatio XXI seminaari
Publisher: Suomen Automaatioseura
Editor: Jämsä-Jounela, S.
ISBN (Print): 978-952-5183-46-7

Publication series

Name: SAS julkaisusarja
No.: 44
ISSN (Print): 1455-6502

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

Visual tools to support innovation development: User experiences from the Parisian ecosystem

Purpose – This paper reports an experimental application of network visualization to understand the value of visual expression for presenting complex knowledge assets to executive decision makers in order to develop culturally-relevant insights for program development.
Design/methodology/approach – In pairs, decision makers used interactive network visualizations to explore complex multi-layer data about relationships among key executives, companies, and financing organizations in the region served by their network facilitation programs. Their experiences were documented using pre- and post- questionnaires, as well as observations and interviews conducted by research team members.
Originality/value –The results provide novel evidence of the benefits of a relationship- based visual format to present knowledge assets for evidence-based decisions. Using interactive visualizations, the decision makers aligned views of the data with their individual cognitive mindsets. Working in pairs to complete a joint task, team members made their cultural interpretation and working explicit.
Practical implications – The findings support the argument that the value of knowledge assets in problem-solving performance depends on both the format of the data and the nature of the task. Our results support the importance of continual involvement and interaction between data analysts and decision makers; they highlight the importance of considering knowledge assets as value drivers that can support knowledge-based innovation.

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, MediaX, Stanford University, VTT Technical Research Centre of Finland
Contributors: Russell, M. G., Still, K., Huhtamäki, J. V.
Number of pages: 14
Publication date: 10 Jun 2015

Host publication information

Title of host publication: Proceedings of the International Forum on Knowledge Asset Dynamics, 10-12 June 2015, Bari, Italy : IKFAD 2015
Publisher: Institute of Knowledge Asset Management & Arts for Business Institute
ISBN (Electronic): 978-88-96687-07-9

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

Visual narratives in the value chain of new management accounting knowledge

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Industrial Management, Research group: Cost Management Center
Contributors: Nyuppieva, E., Laine, T., Lyly-Yrjänäinen, J.
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

VisualLabel: An Integrated Multimedia Content Management and Access Framework

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Signal Processing, Pervasive Computing, Research group: Software Engineering and Intelligent Systems, Arcada University of Applied Sciences, Aalto University, department of Computer Science, Lynx Technology Finland Oy, Aalto University
Contributors: Ahmad, I., Rantanen, P., Sillberg, P., Laaksonen, J., Liu, S., Forss, T., Malik, A., Nieminen, M., Shetty, R., Ishikawa, S., Kallio, J., Saarinen, J. P., Gabbouj, M., Soini, J.
Number of pages: 22
Pages: 332-353
Publication date: 2017

Host publication information

Title of host publication: The Proceedings of the 27th International Conference on Information Modelling and Knowledge Bases, EJC 2017 : June 5-9, 2017, Krabi, Thailand
ISBN (Electronic): 978-616-407-165-0

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

Visual Data Mining in Software Repositories: A Survey

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Pervasive Computing
Contributors: Eteläaho, A., Soini, J., Jaakkola, H., Mattila, A.
Pages: 367-385
Publication date: Jun 2017

Host publication information

Title of host publication: The Proceedings of the 27th International Conference on Information Modelling and Knowledge Bases
Publisher: Sirindhorn International Institute of Technology, Thammasat University, Thailand
Editors:  Sornlertlamvanich, V., Chawakitchareon, P., Hansuebsai, A., Koopipat, C., Kiyoki, Y., Jaakkola, H., Thalheim, B., Yoshida, N.
ISBN (Electronic): 978-616-407-165-0

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

Vision-based path coordination for multiple mobile robots with four steering wheels using an overhead camera

In this paper, we extend our previous work to introduce a vision-based path coordination method for multiple mobile robots with four steering wheels to avoid mutual collisions, so that the generated paths are always in the visibility range of the overhead camera. The proposed algorithm generates the synchronized trajectories for all wheels belonging to each mobile robot, with respect to its inertial-frame, relying on only one calibrated camera. These synchronized trajectories reduce the complexity of the robot kinematic model to plan maximum allowable bounded driving and steering velocities for each mobile robot. The main contribution of the proposed method is coordinating the trajectories for multiple mobile robots to avoid intersection boundaries that are obtained by generated geometrical traces in real world coordinates. Our experimental results are presented to illustrate the efficiency of the proposed method for the path coordination of multiple mobile robots with four steering wheels to avoid mutual collision.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Intelligent Hydraulics and Automation, Research group: Mobile manipulation
Contributors: Ziaei, Z., Oftadeh, R., Mattila, J.
Number of pages: 8
Pages: 261-268
Publication date: 1 Jul 2015

Host publication information

Title of host publication:  IEEE International Conference on Advanced Intelligent Mechatronics (AIM), 2015
ISBN (Print): 978-1-4673-9107-8
Keywords: cameras, collision avoidance, mobile robots, robot kinematics, robot vision, steering systems, trajectory control, calibrated camera, multiple mobile robots, overhead camera, robot kinematic model, steering wheels, synchronized trajectories, vision-based path coordination, Cameras, Collision avoidance, Mobile robots, Robot kinematics, Trajectory, Wheels, Four steering wheels, Intersection region, Multiple mobile robots, Nonholonomic mobile robots, Path coordination, Steering and driving velocity, Vision-based method
Source: Bibtex
Source ID: urn:a1ad44c17a4d88dc0b2e6fb580e7e7f2

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

Visibility-Aware Part Coding for Vehicle Viewing Angle Estimation

A number of spatially-localised semantic parts of vehicles sensitive to pose changes are encoded their visible probabilities into a mid-level feature vector. Car pose estimation is then formulated into a regression on concatenated low-and mid-level features to continuously changing viewing angles. Each dimension of our visibility-Aware part codes separates all the training samples into two groups according to its visual existence in images, which provides additional part-specific range constraint of viewing angles. Moreover, the proposed codes can alleviate the suffering from sparse and imbalanced data distribution in the light of modelling latent dependency across angle targets. Experimental evaluation for car pose estimation on the EPFL Multi-View Car benchmark demonstrates significant improvement of our method over the state-of-The-Art regression methods, especially when only sparse and imbalanced data is available.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Computing Sciences, Research group: Vision, South China University of Technology
Contributors: Yang, D., Qian, Y., Cai, D., Yan, S., Kämäräinen, J., Chen, K.
Number of pages: 6
Pages: 65-70
Publication date: 1 Aug 2019

Host publication information

Title of host publication: 9th International Conference on Information Science and Technology, ICIST 2019
Publisher: IEEE
ISBN (Electronic): 9781728121062
ASJC Scopus subject areas: Computer Science Applications, Computer Vision and Pattern Recognition, Information Systems, Computational Mathematics, Control and Optimization
Keywords: Car pose estimation, Coding, Pose-sensitive parts, Regression forests, Visibility-Aware

Bibliographical note

EXT="Chen, Ke"
jufoid=79229

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

Vibration analysis of the composite slim floor

Vibration design has been a significant challenge for Composite Slim Floors. An increase in demands for longer spans and uninterrupted floor areas has resulted in floor structures more sensitive to vibration problems caused by human excitation. This paper concentrates on vibration behavior of Composite Slim Floors consisting of pre-cast hollow core slabs and composite slim floor beams. Floor vibrations are studied numerically using finite element (FEM) analysis and Robot Structural Analysis software. An existing car park floor has been used as a case study and the calculated results have been compared with experimental measurements. Both simple and more advanced FEM models are used to investigate whether the Eigen modes are formed by the composite slim floor beams or pre-casted hollow core slabs. Calculated Eigen frequencies are used for evaluating Floor Response. The response is measured by either root-mean-square acceleration or Response Factor. From all of these results effects of vibration for Floor designing are evaluated. The resulted Eigen frequencies and Response Factor values are compared to limit values and guidelines given in design standards. The study gives valuable information about the floor performance and about the potential methods and details which lead to economical slim floor construction with acceptable vibration performance. The contribution of different floor and frame components to Eigen frequencies are also studied.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: University of Oulu, Peikko Group Oy
Contributors: Yrjölä, J., Peltonen, S., Malaska, M.
Number of pages: 6
Publication date: 2014

Host publication information

Title of host publication:  EUROSTEEL 2014 : 7th European Conference on Steel and Composite Structures, 10.-12.9.2014, Naples, Italy
Place of publication: Belgium
Publisher: ECCS - European Convention for Constructional Steelwork
Editors: Landolfo, R., Mazzolani, F.
Article number: 33-494
ISBN (Electronic): 978-92-9147-121-8

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

Vesi, ongelma ennen ja nyt?

General information

Publication status: Published
MoE publication type: A2 Review article in a scientific journal
Organisations: Civil Engineering
Contributors: Juuti, P.
Pages: 54-65
Publication date: May 2017
Peer-reviewed: Yes

Publication information

Journal: Ympäristöhistoria: Finnish Journal of Environmental History
Volume: 2017
Issue number: 1
ISSN (Print): 1799-6953
Original language: Finnish

Research output: Contribution to journalReview ArticleScientificpeer-review

Vesihuollon instituutiot vaativat taitavaa jalkapallopeliä

General information

Publication status: Published
MoE publication type: D1 Article in a trade journal
Organisations: Civil Engineering
Contributors: Inha, L., Katko, T. S., Rajala, R.
Number of pages: 3
Pages: 38-40
Publication date: Jun 2019
Peer-reviewed: Unknown

Publication information

Journal: Rakennustekniikka
Volume: 75
Issue number: 3
ISSN (Print): 0033-913X
Original language: Finnish

Research output: Contribution to journalArticleProfessional

Ventilation rates and CO2-levels before and after energy retrofit in Finnish apartment buildings

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Research group: Concrete and Bridge Structures, Research area: Structural Engineering, Department of Civil Engineering, Research group: Building Physics, Natl Inst Hlth & Welf, Finland National Institute for Health & Welfare, Dept Environm Hlth
Contributors: Leivo, V., Aaltonen, A., Turunen, M., Du, L., Kiviste, M., Haverinen-Shaughnessy, U.
Publication date: 2016

Host publication information

Title of host publication: CLIMA 2016 - Proceedings of the 12th REHVA World Congress. Aalborg. Aalborg University. Department of Civil Engineering. : Volume 1. Building Retrofit
Volume: 1
Place of publication: Aalborg
Publisher: Aalborg university, Department of Civil Engineering
Editor: Kvols Heiselberg, P.
Article number: 192 (in vol 1)
ISBN (Electronic): 87-91606-26-8

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

Vehicle Mass Estimation for Hydraulic Drive System using Longitudinal Motion Model

The real-time mass estimation of the vehicle is applied for the machine with the hydraulic drive system. The mass estimation is based on the longitudinal drive model comprising the model of hydraulic drive transmission. The resistance forces of the longitudinal motion such as the air drag, rolling resistance and
friction of the drive system are modelled. The actual mass of the vehicle is deduced from the measured hydraulic torque and from the force causing the acceleration. As the aerodynamic drag, rolling resistance, road grade load and transmission losses have a significant share from the total drive torque, the effects of these forces are taken account. Further, the estimated mass data is classified by recognising operation conditions where the mass estimation is accurate. After a short acceleration-deceleration period, the measured signals provide enough data for estimating the mass of the vehicle. The experimental tests are run with a middle-size wheel loader and with a typical work cycle resulting ±5% accuracy from the real mass. Furthermore, the proposed model and recognition of the operation conditions are applicable to estimate also other vehicle parameters such as friction force or road grade.

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
Contributors: Ahopelto, M., Krogerus, T., Huhtala, K.
Number of pages: 10
Pages: 433-442
Publication date: May 2015

Host publication information

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

Publication series

Name: The Fourteenth Scandinavian International Conference on Fluid Power, SICFP15
ISSN (Electronic): 2342-2726
Keywords:  Longitudinal motion, mass estimation, hydraulic drive system, wheel loader
URLs: 

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

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

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

Valtion tukemien homekorjaushankkeiden arviointi -jatkotutkimus (HKPro 3)

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Civil Engineering, Research group: Service Life Engineering of Structures, Research area: Structural Engineering
Contributors: Annila, P., Marttila, T., Kero, P., Suonketo, J., Pentti, M.
Number of pages: 6
Pages: 107-112
Publication date: 11 Mar 2015

Host publication information

Title of host publication: Sisäilmastoseminaari 2015 SIY Raportti 33, Messukeskus, Helsinki 11.3.2015
Volume: Sisäilmayhdistys raportti 33
Place of publication: Juva
Editors: Säteri, J., Ahola, M.
ISBN (Print): 978-952-5236-43-9

Publication series

Name: 
No.: 33
Name: Sisäilmayhdistys

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

Valtion tukemien homekorjaushankkeiden arviointi (HKPro 2)

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Civil Engineering, Research group: Service Life Engineering of Structures, Research area: Structural Engineering
Contributors: Marttila, T., Suonketo, J., Kero, P., Annila, P., Pentti, M.
Number of pages: 6
Pages: 101-106
Publication date: 11 Mar 2015

Host publication information

Title of host publication: Sisäilmastoseminaari 2015 SIY Raportti 33, Messukeskus, Helsinki 11.3.2015 : Sisäilmastoseminaari
Volume: Sisäilmayhdistys raportti 33
Place of publication: Juva
Editors: Säteri, J., Ahola, M.
ISBN (Print): 978-952-5236-43-9

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

Valkea kaupunki, mustat vedet

General information

Publication status: Published
MoE publication type: A2 Review article in a scientific journal
Organisations: Civil Engineering
Contributors: Juuti, P., Rajala, R.
Number of pages: 3
Pages: 15-17
Publication date: 2017
Peer-reviewed: Yes

Publication information

Journal: Vesitalous
Volume: 2017
Issue number: 1
ISSN (Print): 0505-3838
Original language: English

Research output: Contribution to journalReview ArticleScientificpeer-review

Validation of the method to evaluate the corrosion propagation stage by hygrothermal simulation

Evaluating the propagation period for reinforcement corrosion in concrete facades is an important but complex task which contains a high level of uncertainty. Corrosion current intensity during the propagation period have been measured in a large number of studies and there is a general consensus in regard to factors affecting carbonation induced corrosion. Hence, a proper evaluation of hygrothermal conditions in concrete facade becomes crucial. In this study a method to calculate the corrosion propagation period was validated based upon a field survey of prefabricated concrete facades in large-panel apartment buildings. The method combines existing corrosion propagation models and the Delphin dynamic hygrothermal simulation tool, and takes into consideration material properties, carbonation depth, concrete cover depth, indoor and outdoor climate loads. With the proposed method, propagation consists of a time that is required for a concrete cover to begin cracking and a further expansion of the crack to open to 0.3 mm in width. As a result, the method is validated via the correlation between measured and calculated propagation periods across a range of twenty years. The sensitivity of the results are also studied. The method allows for an evaluation to be carried out on degradation, residual service life, and the need for the renovation of reinforced concrete facades.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research group: Service Life Engineering of Structures, Tallinn University of Technology
Contributors: Ilomets, S., Kalamees, T., Lahdensivu, J.
Number of pages: 8
Pages: 1113-1120
Publication date: 2016

Host publication information

Title of host publication: CESB 2016 - Central Europe Towards Sustainable Building 2016: Innovations for Sustainable Future
Publisher: Czech Technical University in Prague
ISBN (Electronic): 9788027102488
ASJC Scopus subject areas: Civil and Structural Engineering, Building and Construction
Keywords: Concrete damage, Corrosion model, Corrosion propagation, Hygrothermal simulation, Service life

Bibliographical note

EXT="Kalamees, Targo"

Source: Scopus
Source ID: 84986883167

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

Validating information security framework for offloading from LTE onto D2D links

D2D communications is one of the key technologies to enable aggressive spatial frequency reuse in future evolution of cellular systems. While the standardization efforts are far from their final stage there is clear understanding that security is one of the major concerns for proximity services. This is especially the case when one or more communicating stations in a logical cluster do not have an active connection to the serving base station. In this paper we propose a solution for secure throughput optimized communications in D2D-assisted cellular system. In order to provide additional throughput, a game-theoretic optimization approach is considered by taking into account social relationships and devices proximity. The proposed solution is agnostic to the chosen D2D communications technology (i.e., WiFi or LTE) and suitable for any possible cluster combination in full and partial cellular coverage. Performance evaluation of the proposed security framework show that social proximity information available at the D2D devices may substantially improves the system performance in term of throughput with respect to the standard security procedures. Finally, for sake of completeness, the effect of mobility for the reference scenario is evaluated.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering, Universita degli Studi di Reggio Calabria
Contributors: Orsino, A., Ometov, A.
Number of pages: 7
Pages: 241-247
Publication date: 6 Sep 2016

Host publication information

Title of host publication: Proceedings of the 18th Conference of Open Innovations Association FRUCT and Seminar on Information Security and Protection of Information Technolog, FRUCT-ISPIT 2016
Publisher: IEEE COMPUTER SOCIETY PRESS
ISBN (Electronic): 9789526839721
ASJC Scopus subject areas: Computer Science(all), Electrical and Electronic Engineering
Source: Scopus
Source ID: 84989166036

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

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

Uusi Rakennusfysiikan käsikirja - perustiedot rakennusfysikaalisesta suunnittelusta ja tutkimuksista

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Civil Engineering, Research group: Building Physics
Contributors: Vinha, J.
Number of pages: 6
Pages: 115-120
Publication date: 20 Oct 2015

Host publication information

Title of host publication: Rakennusfysiikka 2015. Uusimmat tutkimustulokset ja hyvät käytännön ratkaisut. 20.-22.10.2015, Tampere
Place of publication: Tampere
Publisher: Tampereen teknillinen yliopisto, rakennustekniikan laitos, rakennetekniikka
Editors: Vinha, J., Ruuska, T.
ISBN (Print): 978-952-15-3580-2
Keywords: Double skin facade, Energy efficiency, New renovation consepts, Innovative HVAC, Earth to air heat exchancer

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

Uusi Rakennusfysiikan käsikirja

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Civil Engineering, Research group: Building Physics
Contributors: Vinha, J.
Number of pages: 6
Pages: 167-172
Publication date: 2015

Host publication information

Title of host publication: Sisäilmastoseminaari 2015
ISBN (Print): 9789525236439

Publication series

Name: Sisäilmastoyhdistys raportti
No.: 33
ISSN (Electronic): 1237-1866

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

Uusia tuulia Euroopasta

General information

Publication status: Published
MoE publication type: D2 Article in professional manuals or guides or professional information systems or text book material
Organisations: School of Architecture, Research group: Built Environment in Transition, Research group: Urban Planning Theory
Contributors: Lehtovuori, P.
Number of pages: 18
Pages: 42-59
Publication date: 2015

Host publication information

Title of host publication: Asukkaan ehdoilla : moninaisuutta asumamuotoihin
Place of publication: Helsinki
Publisher: Rakennustieto Oy
ISBN (Print): 978-952-267-100-4

Research output: Chapter in Book/Report/Conference proceedingChapterProfessional

Uudet arkkitehtoniset ratkaisumallit muuttavat kampuksien ilmettä

Uudet pedagogiset oivallukset sekä tekniset innovaatiot ovat radikaalisti muokanneet yliopisto-oppimista, mikä asettaa merkittäviä kehitystarpeita myös oppimistiloille. Uudenlaiset oppimistavat vaativat uudenlaisia tiloja ja paikkoja, jotka tukevat oppimista parhaalla mahdollisella tavalla. Artikkelissa pohditaan kuinka kampuksia voidaan elävöittää arkkitehtuurin keinoin? Miten eri mittakaavalliset ratkaisut tukevat oppimista, vuorovaikutusta sekä luovuutta?

Kampusten uudistamista voidaan tarkastella erilaisista tilallisista ja arkkitehtonisista näkökulmista. Tässä artikkelissa esitetään kolmen tarkastelutason ideoita kampus-, rakennus- ja tilamittakaavoissa. Kokonaisvaltaiset ratkaisut, joissa rakennuksen tilat ja toiminta uudistuvat täysin, omaavat valtavan potentiaalin muuttaa ihmisten
välistä vuorovaikutusta sekä tilojen käyttöä. Tällaiset ratkaisut saattavat olla kuitenkin kalliita ja hitaita toteuttaa. Pienemmän mittakaavan ratkaisut vaikuttavat pienemmällä alueella, mutta ovat toteutukseltaan edullisempia ja nopeampia. Esimerkiksi kampusten vajaakäyttöisten tilojen, kuten käytävien ja aulatilojen ottaminen hyötykäyttöön voisi tehostaa merkittävästi kampusten tilarakennetta. Täysin uusien toimintojen sijoittaminen näihin vajaakäyttöisiin tiloihin voisi lisäksi luoda kampuksista eläviä urbaaneja ympäristöjä, joissa on toimintaa vuorokauden ympäri. Olemassa olevat rakennukset voivat täten toimia alustoina uusille arkkitehtonisille ratkaisuille, jotka viestivät opetuksen ja tutkimuksen ajankohtaisuudesta. Tutkimuksen tuloksia voidaan soveltaa joustavasti erilaisten kampusympäristöjen muutosten suunnittelussa. Artikkeli toimii keskustelun avauksena suunnittelijoiden, kampuskehittäjien sekä käyttäjien välisessä vuoropuhelussa. Esitetyt ratkaisumallit paljastavat, että olemassa olevissa kampuksissa ja niiden tilarakenteessa on paljon kehityspotentiaalia. Artikkelissa esitetyt visiot herättelevät lukijoita katsomaan olemassa olevia kampuksia uudesta näkökulmasta uusien innovatiivisten esimerkkien ja tilaratkaisujen kautta.

General information

Publication status: Published
MoE publication type: D2 Article in professional manuals or guides or professional information systems or text book material
Organisations: School of Architecture, Research group: Public Buildings
Contributors: Poutanen, J., Peltoniemi, S., Pihlajarinne, N.
Number of pages: 22
Pages: 72-93
Publication date: Mar 2015

Host publication information

Title of host publication: Oppiva kampus : How to co-create campus?
Place of publication: Tampere
Publisher: Suomen Yliopistokiinteistöt Oy
Editors: Nenonen, S., Kärnä, S., Junnonen, J., Tähtinen, S., Sandström, N.
ISBN (Print): 978-952-15-3478-2
ISBN (Electronic): 978-952-15-3479-9

Research output: Chapter in Book/Report/Conference proceedingChapterProfessional

Uudessa COMBI-hankkeessa tutkitaan energiatehokkaan palvelurakentamisen haasteita ja ratkaisuja

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Civil Engineering, Research group: Building Physics, School of Architecture, Research group: ASUTUT, Research area: Structural Engineering, Research group: Capacity Development of Water and Environmental Services CADWES, Research group: Real estate development, Research group: Service Life Engineering of Structures, Aalto University, Tampere University of Applied Sciences TAMK
Contributors: Vinha, J., Hedman, M., Sirén, K., Harsia, P., Pentti, M., Teriö, O., Heljo, J., Laukkarinen, A., Annila, P., Kaasalainen, H., Jokisalo, J., Pihlajamaa, P.
Number of pages: 10
Pages: 487-496
Publication date: 20 Oct 2015

Host publication information

Title of host publication: Rakennusfysiikka 2015. Uusimmat tutkimustulokset ja hyvät käytännön ratkaisut. 20.-22.10.2015, Tampere.
Publisher: Tampereen teknillinen yliopisto, rakennustekniikan laitos, rakennetekniikka
Editors: Vinha, J., Ruuska, T.
ISBN (Print): 978-952-15-3580-2

Publication series

Name: Rakennustekniikan laitos. Rakennetekniikka. Seminaarijulkaisu
No.: 4
ASJC Scopus subject areas: Civil and Structural Engineering, Building and Construction

Bibliographical note

ORG=rak,0.8
ORG=ark,0.2

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

Utilizing knowledge networks in virtual or augmented reality solution creation

Contemporary digital transformation brings new opportunities for companies, lately especially in the form of virtual and augmented reality solutions (VR/AR). While the technologies are developing fast, knowledge about them and their possibilities is difficult to locate and reach. Cross-organizational knowledge networks that share knowledge about technology and its applications are needed. This paper analyzes cross-organizational knowledge sharing networks that operate behind the scenes of virtual and augmented reality. To understand the knowledge networking processes, this paper presents a case study of a regional VR/AR community. The aim of the paper is to understand how knowledge sharing networks naturally operate in the VR/AR context and what kind of processes and tools organizations harness. The paper presents a description on how the interviewed organizations and individuals utilize their knowledge network in VR/AR knowledge acquisition and creation. The distinct characteristics of the VR/AR field are discussed in light of existing literature on knowledge sharing and knowledge networks. In the findings, the need for a more systematic way of utilizing the network is identified. Knowledge networks provide the best value for their members when the network is actively harnessed, and there are network actors who focus on systematically spreading knowledge across the network. While the case study shows that the network members feel that they gain knowledge from the network, the use of the network varies between organizations and individuals. The network shows signs of movement toward more systematic knowledge sharing, and the knowledge network literature suggests that this development will improve the benefits of network participation for all actors in the network. Further studies on a larger scale in similar types of networks are suggested to allow better understanding of knowledge sharing in knowledge networks, and the challenges and benefits that are connected to it. VR/AR development as a rapidly evolving field lends itself to be an interesting context for studying knowledge networks.

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, Pervasive Computing, Research area: User experience, Tampere University of Technology
Contributors: Vanhalakka, J., Ilvonen, I., Väätäjä, H.
Number of pages: 7
Pages: 1008-1014
Publication date: 2017

Host publication information

Title of host publication: Proceedings of the 18th European Conference on knowledge Management ECKM 2017 : 7-8 September 2017, Barcelona, Spain
Publisher: Academic Conferences and Publishing International
Editors: Marimon, F., Mas-Machuca, M., Berbegal-Mirabent, J., Bastida, R.
ISBN (Print): 978-1-911218-48-7
ISBN (Electronic): 978-1-911218-49-4

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

Using context overlays to analyse the role of a priori information with Process Mining

Notwithstanding the significant advances in context-aware computing in pervasive computing and self-adaptive systems, there is still much more to be desired in providing better context services. The number of sensors deployed world-wide increases very rapidly. The Internet of Things, amongst others, generates vast amounts of data of many different data types. How data are used is essential to improve user experience and efficiencies of the systems in which they occur. We explain how familiar concepts of Process Mining strengthen generalised sensor context services. We present a laboratory case to explain the approach. By way of a real-world example, we confirm the viability of using Process Mining to strengthen context-aware 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: Pileggi, P., Rivero Rodriguez, A., Nykänen, O.
Number of pages: 6
Pages: 639-644
Publication date: 2015

Host publication information

Title of host publication: 2015 IEEE International Systems Conference (SysCon 2015) Proceedings
Place of publication: Vancouver, BC, Canada
Publisher: IEEE
ISBN (Print): 978-1-4799-5927-3
Keywords: Context-aware computing, Process mining, Self- adaptive systems, Pervasive computing

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

Using a synthetic probe to study the robustness of the segregation process of protein aggregates in Escherichia coli

Even though the processes of protein production and folding are not immune to errors, Escherichia coli lineages are capable to maintain a stable cell lineage, provided viable environmental conditions. One of the internal processes that makes this possible consists of segregating unwanted protein aggregates to the cell poles by nucleoid exclusion, which, combined with cell divisions, generates asymmetries in the aging process of the population, with some individuals aging faster while others exhibit rejuvenation. A recent study showed that this process is not immune to sub-optimal temperature conditions due to increased cytoplasm viscosity, which weakens the anisotropy in aggregate displacements at the nucleoid borders. This was made possible by the usage of a synthetic fluorescent probe, consisting of a RNA sequence with multiple binding sites for the MS2-GFP synthetic protein, which can be tracked in time-lapse microscopy images. Here we provide a description of the findings from these measurements and investigate with an In Silico model the consequences in the context of cell lineages.

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
Contributors: Ribeiro, A., Oliveira, S.
Pages: 21-22
Publication date: 26 Jun 2016

Host publication information

Title of host publication: The 8th International Conference on Bioinformatics, Biocomputational Systems and Biotechnologies (BIOTECHNO2016)
Publisher: IARIA
ISBN (Electronic): 978-1-61208-488-6

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

User experience in technology investment decisions of industrial firms

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, Pori Department, Research group: Business Ecosystems, Networks and Innovations
Contributors: Sundberg, H., Seppänen, M.
Publication date: 10 Jun 2015

Host publication information

Title of host publication: 22nd Innovation & Product Development Management Conference, IPDMC
Place of publication: Copenhagen
Publisher: EIASM

Bibliographical note

ORG=pla,0.5
ORG=tta,0.5

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

User-driven development with scientific applied research - RFID-controlled physiogame case study

The role of technology in health care is growing. One major challenge caused by the rapid evolvement of technologies, is the implementation and application of the latest technology advances into actual care practises. In this paper, we present how combination of scientific research and multidisciplinary applied research activities can boost the development of need-based solutions to real-life challenges. The paper concentrates on the ideation phase of the development process. This paper presents a case study, in which a body movement-controlled physiotherapy game is developed in close collaboration of technology developers and physiotherapy professionals. Textile-integrated passive UHF RFID tags are used as game controllers to enable identification of certain movements. The results indicate the early stage prototype used in the study to enhance ideation and identification of application areas for the technology. In addition, the joint development process, in which the clients (rehabilitation professionals) are involved from the beginning, is also found to create commitment to continue collaboration, by helping the technology developers to meet the needs and to take user group-specific requirements into account in the development. This kind of process serves multidisciplinary projects well.

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: Merilampi, S., Ihanakangas, V., Virkki, J.
Number of pages: 4
Pages: 167-170
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: passive UHF RFID technology, research collaboration, self-managed rehabilitation, serious games, wearable electronics, women in RFID

Bibliographical note

EXT="Merilampi, Sari"

Source: Bibtex
Source ID: 8892150

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

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

Use of equipment lifecycle data in industrial services

Manufacturing firms can use equipment lifecycle data to enable industrial services. With the increased centrality of information technology, they may need cooperation with software providers, and this cooperation is still poorly understood. This study pursues increased understanding on the use of equipment lifecycle data in industrial services. An exploratory study with four software providers and two manufacturing firms reveals unexploited opportunities for industrial services through intensified triadic cooperation and clarifies the task division between manufacturing firms and software providers. A framework is suggested, on the conditions enabling and promoting success in the services based on equipment lifecycle data.

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services, Tampere University of Technology
Contributors: Ocaña Flores, M., Martinsuo, M.
Number of pages: 20
Publication date: Sep 2015

Host publication information

Title of host publication: RESER 2015 : 25th Annual RESER Conference
Place of publication: Copenhagen
Publisher: RESER European Association for Research on Services
ISBN (Electronic): 978-87-7349-921-4
Keywords: equipment lifecycle, lifecycle data, industrial services

Bibliographical note

AUX=tta,"Ocaña Flores, Moramay"

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

Upper bound and approximation of random access throughput over chase combining HARQ

Massive MTC (mMTC) scenarios featuring a tremendous number of devices challenge the conventional multiple access protocols, which are mostly based on classic ALOHA algorithms known for their instability at higher loads. While numerous modifications of ALOHA adopt the unrealistic assumption on the fixed number of contending uses, we in this paper study a model where a random number of users activate within the slot. In particular, we explore a modification of ALOHA augmented with the Chase combining HARQ (HARQ-CC) and derive an approximation for and a simple upper bound on the system throughput. While the former perfectly matches the corresponding simulation results for the SNR of up to 10dB, the latter constitutes an increasingly tight limit as the SNR grows. Based on both analytical considerations, the resulting system throughput may be significantly improved with the optimal choice of the transmission probability and code spectral efficiency.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Electronics and Communications Engineering
Contributors: Burkov, A., Matveev, N., Turlikov, A., Bulanov, A., Gahnina, O., Andreev, S.
Number of pages: 5
Pages: 143-147
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: Decoding, Interference, Nickel, Random variables, Signal to noise ratio, Throughput, Upper bound, ALOHA, Chase combining, Hybrid-ARQ, Random multiple access, system throughput, upper bound

Bibliographical note

INT=elt,"Gahnina, O."
jufoid=72315

Source: Bibtex
Source ID: urn:d2e90d5f230392641b73d327cca99a8a

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

University Students’ Perceptions of Academic Writing: An Academic Literacies Perspective

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Language Centre, Department of Information Management and Logistics, Research group: Novi, University of Tampere
Contributors: Tukiainen, M., Mäkinen, M., Helander, N.
Number of pages: 7
Pages: 7589-7595
Publication date: 16 Nov 2015

Host publication information

Title of host publication: ICERI2015 Proceedings : 8th annual International Conference of Education, Research and Innovation Seville (Spain). 16th - 18th of November, 2015.
ISBN (Electronic): 978-84-608-2657-6

Bibliographical note

ORG=kie,0.5
ORG=tlo,0.5

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

Underpinning Interrelated Factors of Physical, Virtual, and Social Learning Environments

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Electronics and Communications Engineering, Research group: Urban Planning and Design, Architecture
Contributors: Kangas, J., Poutanen, J.
Pages: 8087-8096
Publication date: 2018

Host publication information

Title of host publication: ICERI2018 Proceedings
ISBN (Electronic): 978-84-09-05948-5

Publication series

Name: ICERI proceedings
ISSN (Electronic): 2340-1095

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

Uncertainties in Charge Measurements of ESD Risk Assessment

Charge measurement techniques are often considered too complicate to the process control of electronics manufacturing. In his study, we show that expensive instrumentation is not necessarily needed for characterizing ESD source parameters in a risk assessment. Measurement can be made accurately when uncertainties are properly taken into account.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering, ABB Oy, Drives, Cascade Metrology, Nokia Corporation
Contributors: Viheriäkoski, T., Kohtamäki, J., Peltoniemi, T., Tamminen, P.
Number of pages: 8
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.3
ISBN (Print): 9781479988952
ASJC Scopus subject areas: Engineering(all)
Keywords: ESD, charge, measurement, Uncertainty estimation
Electronic versions: 

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

Ultra-large mode area single frequency anisotropic MOPA with double clad Yb-doped tapered fiber

We demonstrates all-fiber master oscillator - power amplifier delivered 70W output power at 1033.33nm with 8 kHz FWHM linewidth without any problems with SBS. The anisotropic ytterbium doped tapered double clad amplifier with 50 μm MFD and polarization extinction ratio about 30 dB is developed as a burst stage. The output radiation demonstrated perfect beam quality (M2=1.03/1.08).

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Ampliconyx Ltd, Institute of Radio Engineering and Electronics of the Russian Academy of Sciences, St. Petersburg State Polytechnical University
Contributors: Noronen, T., Fedotov, A., Rissanen, J., Gumenyuk, R., Butov, O., Chamorovskii, Y., Golant, K., Odnoblyudov, M., Filippov, V.
Number of pages: 6
Publication date: 1 Jan 2018

Host publication information

Title of host publication: Fiber Lasers XV : Technology and Systems
Publisher: SPIE, IEEE
Article number: 105121T
ISBN (Electronic): 9781510615090

Publication series

Name: Proceedings of SPIE
Publisher: SPIE
Volume: 10512
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: active fiber, fiber amplifier, Fiber laser

Bibliographical note

EXT="Noronen, Teppo"
EXT="Fedotov, Andrei"
INT=fot, "Rissanen, Joona"
EXT="Gumenyuk, Regina"
EXT="Filippov, Valery"

Source: Scopus
Source ID: 85045656071

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

Ulkoseinien rakennusfysikaaliset riskit ja pitkäaikaiskestävät ratkaisut

General information

Publication status: Published
MoE publication type: B2 Part of a book or another research book
Organisations: Department of Civil Engineering, Research group: Building Physics
Contributors: Salonen, J., Laukkarinen, A., Vinha, J.
Number of pages: 8
Pages: 74-81
Publication date: 2015

Host publication information

Title of host publication: Korjaa ja korota : Kerrostalojen korjaamisen ja lisäkerrosten rakentamisen ratkaisuja
Volume: 62
Place of publication: Oulu, Finland
Publisher: Oulun yliopisto
Editors: Soikkeli, A., Koiso-Kanttila, J., Sorri, L.
ISBN (Print): 978-952-62-0727-8

Publication series

Name: Oulun yliopisto, arkkitehtuurin osasto. A. Julkaisu
ISSN (Electronic): 0357-8704
ASJC Scopus subject areas: Building and Construction

Research output: Chapter in Book/Report/Conference proceedingChapterScientific

Two-turns antenna and magnetic materials for effective powering of mm-size implant in wireless brain-machine interface system

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)
Contributors: Khan, W., Björninen, T., Ukkonen, L., Sydänheimo, L.
Number of pages: 2
Pages: 103-104
Publication date: Sep 2015

Host publication information

Title of host publication: 2015 IEEE MTT-S 2015 International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)
Publisher: IEEE
ISBN (Print): 9781479985432

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

Two patterns for minimizing human resources in a startup

In this paper, we describe two patterns that are part of a larger pattern language for software startup companies. These two particular patterns help startup companies to focus on the essential; the product itself and keeping their team intact and productive. In this way, the startup may operate with a sustainable team size.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Pervasive Computing, Research area: Software engineering
Contributors: Leppänen, M.
Publication date: 10 Apr 2014

Host publication information

Title of host publication: VikingPLoP 2014 Proceedings of the 8th Nordic Conference on Pattern Languages of Programs (VikingPLoP)
Publisher: ACM
Article number: 4
ISBN (Print): 9781450326605
ASJC Scopus subject areas: Human-Computer Interaction, Computer Networks and Communications, Computer Vision and Pattern Recognition, Software
Keywords: Lean startup, Organization, Organizational patterns, Patterns, Software engineering, Software product, Team
Source: Scopus
Source ID: 84940021370

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

Two models for hydraulic cylinders in flexible multibody simulations

In modelling hydraulic cylinders interaction between the structural response and the hydraulic system needs to be taken into account. In this chapter two approaches for modelling flexible multibody systems coupled with hydraulic actuators i.e. cylinders are presented and compared. These models are the truss-elementlike cylinder and bending flexible cylinder models. The bending flexible cylinder element is a super-element combining the geometrically exact Reissner-beam element, the C1-continuous slide-spring element needed for the telescopc movement and the hydraulic fluid field. Both models are embeded with a friction model based on a bristle approach. The models are implemented in a finite element enviroment. In time the coupled stiff differential equation system is integrated using the L-stable Rosenbrock method.

General information

Publication status: Published
MoE publication type: A3 Part of a book or another research book
Organisations: Department of Civil Engineering, Research group: Structural Mechanics, Department of Mechanical Engineering and Industrial Systems, Research area: Applied Mechanics, FS Dynamics Finland Oy Ab
Contributors: Ylinen, A., Mäkinen, J., Kouhia, R.
Number of pages: 31
Pages: 463-493
Publication date: 2016

Host publication information

Title of host publication: Computational Methods for Solids and Fluids : Multiscale Analysis, Probability Aspects and Model Reduction
Publisher: Springer
ISBN (Print): 978-3-319-27994-7
ISBN (Electronic): 978-3-319-27996-1

Publication series

Name: Computational Methods in Applied Sciences
Volume: 41
ISSN (Print): 1871-3033
ASJC Scopus subject areas: Computational Mathematics, Modelling and Simulation, Fluid Flow and Transfer Processes, Computer Science Applications, Civil and Structural Engineering, Electrical and Electronic Engineering, Biomedical Engineering

Bibliographical note

JUFOID=79940
EXT="Ylinen, Antti"

Source: Scopus
Source ID: 84964233721

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

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

Tutkimuskatsaus: Uusia menetelmiä haavan paranemisen arviointiin ja seurantaan

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Faculty of Biomedical Sciences and Engineering, Turku Univ Hosp, University of Turku, Åbo Akademi
Contributors: Kekonen, A., Bergelin, M., Viik, J.
Number of pages: 3
Pages: 30-32
Publication date: 20 Oct 2018
Peer-reviewed: Yes

Publication information

Journal: HAAVA
Volume: 20
Issue number: 3
ISSN (Print): 1456-3037
Original language: Finnish
ASJC Scopus subject areas: Biomedical Engineering, Dermatology

Research output: Contribution to journalArticleScientificpeer-review

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

Tuning plasmon induced reflectance with hybrid metasurfaces

Electrically tunable metasurfaces with graphene offer design flexibility to efficiently manipulate and control light. These metasurfaces can be used to generate plasmon-induced reflectance (PIR), which can be tuned by electrostatic doping of the graphene layer. We numerically investigated two designs for tunable PIR devices using the finite difference time-domain (FDTD) method. The first design is based on two rectangular antennas of the same size and a disk; in the second design, two parallel rectangular antennas with different dimensions are used. The PIR-effect was achieved by weak hybridization of two bright modes in both devices and tuned by changing the Fermi level of graphene. A total shift of 362 nm was observed in the design with the modulation depth of 53% and a spectral contrast ratio of 76%. These tunable PIR devices can be used for tunable enhanced biosensing and switchable systems.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Physics, Photonics Laboratory, Balochistan University of Information Technology, Bilkent University
Contributors: Habib, M., Ozbay, E., Caglayan, H.
Publication date: 2019
Peer-reviewed: Yes

Publication information

Journal: Photonics
Volume: 6
Issue number: 1
Article number: 29
ISSN (Print): 2304-6732
Ratings: 
  • Scopus rating (2019): SJR 0.646 SNIP 1.182
Original language: English
ASJC Scopus subject areas: Atomic and Molecular Physics, and Optics, Instrumentation, Radiology Nuclear Medicine and imaging
Keywords: Plasmonics, Surface plasmon, Tunable metasurfaces
Electronic versions: 
Source: Scopus
Source ID: 85063129342

Research output: Contribution to journalArticleScientificpeer-review

Tuning extrinsic noise effects on a small genetic circuit

Measurements at the single cell level showed that monoclonal Escherichia coli cells differ widely in the numbers of components affecting gene expression dynamics. Using a stochastic model of a 2-genes symmetric toggle switch with realistic multi-step promoter initiation kinetics and empirically validated parameter values, we investigate the role of transcription initiation kinetics on the degree with which cell-to-cell variability in cellular components generates cell-to-cell diversity in switch dynamics. We find that while the mean switching frequency is determined by the promoter kinetics, the cell to cell diversity of this frequency depends both on promoter kinetics and diversity in RNA polymerase numbers. At a microscale level, the main regulator of the cell to cell variability in protein numbers (of both genes in ON and OFF states) is the promoters kinetics, not the diversity in RNA polymerase numbers. We conclude that the promoters kinetics is a critical regulator of the toggle switch dynamics and that can be used as a regulatable filter of extrinsic noise.

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
Contributors: Mohamed Bahrudeen, M., S. Ribeiro, A.
Publication date: 4 Sep 2017

Host publication information

Title of host publication: Proceedings of ECAL 2017 : 14th European Conference on Artificial Life
Publisher: Massachusetts Institute of Technology
ISBN (Electronic): 978-0-262-34633-7

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

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

Tunable nonlinear effects through focused spatially phase-shaped beams

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Physics, Research area: Optics, Research group: Nonlinear Optics, Aalto University
Contributors: Turquet, L., Bautista, G., Karvonen, L., Dhaka, V., Chen, Y., Jiang, H., Huhtio, T., Lipsanen, H., Kauranen, M.
Publication date: 2015

Host publication information

Title of host publication: European Quantum Electronics Conference 2015
Publisher: Optical Society of America
Article number: EG_P_11
ISBN (Electronic): 978-1-4673-7475-0
Keywords: Nonlinear optics, SPATIAL LIGHT-MODULATOR, MICROSCOPY, beam shaping

Bibliographical note

EXT="Dhaka, V."
EXT="Chen, Y."

Source: Bibtex
Source ID: urn:3623590cd14102e9789109aea5912da4

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

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

Transverse structure optimization of laterally-coupled ridge waveguide DFB lasers

A new figure of merit for single transverse mode operation and an accurate procedure for calculating the coupling coefficient in distributed feedback lasers with laterally-coupled ridge waveguide surface grating structures are introduced. Based on the difference in optical confinement between the pumped and un-pumped regions in the transverse plane, the single transverse mode figure of merit is effective and easy to calculate, while the improved coupling coefficient calculation procedure gives experimentally confirmed better results than the standard calculation approaches.

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: Uusitalo, T., Virtanen, H., Dumitrescu, M.
Number of pages: 2
Pages: 79-80
Publication date: 17 Aug 2016

Host publication information

Title of host publication: 16th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2016
Publisher: IEEE
Article number: 7547038
ISBN (Electronic): 9781467386036
ASJC Scopus subject areas: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Modelling and Simulation, Numerical Analysis
Source: Scopus
Source ID: 84987653468

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

Transpositions and duals high-order tensors. On theory and applications in mechanics

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Mechanical Engineering and Industrial Systems, Research area: Applied Mechanics
Contributors: Holopainen, S.
Number of pages: 6
Pages: 188-193
Publication date: 4 Jun 2015

Host publication information

Title of host publication: Proceedings of the XII Finnish Mechanics Days : Suomen XII mekaniikkapäivien esitelmät
Publisher: Rakenteiden Mekaniikan Seura ry
Editor: Kouhia, R.
ISBN (Print): 978-952-93-5608-9
ISBN (Electronic): 978-952-93-5609-6

Publication series

Name: Journal of Structural Mechanics
Publisher: Rakenteiden mekaniikan seura r.y.

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

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

Townhouse-talotyypin rakennuskustannukset: kolmen suunnitteluratkaisun taloudellisuuden analysointi

General information

Publication status: Published
MoE publication type: A3 Part of a book or another research book
Organisations: Department of Civil Engineering
Contributors: Saari, A., Tauriainen, M.
Number of pages: 4
Pages: 94-97
Publication date: 2015

Host publication information

Title of host publication: Nollaa parempi – Townhouse energiatehokkaassa asuinrakentamisessa
Publisher: Aalto-yliopisto
ISBN (Print): 978-952-60-6409-3
ISBN (Electronic): 978-952-60-6410-9

Publication series

Name: Aalto University publication series Crossover
No.: 9/2015
ISSN (Print): 1799-4950
ISSN (Electronic): 1799-4969

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

Towards Traditional Simulation Models of Context Using Process Mining

Context (sensor) systems are hard to model: they require constant updating and insightful approaches, especially considering the increasing data volume, variety, and generation rate of contemporary networking paradigms, like the Internet of Things. In this paper, we argue that intelligent process models can be mined to look at the actual system activity from alternative context perspectives, i.e., perspectives observable from the sensor attributes themselves. We explain how the close relationship between the models derived using Process Mining, and Event-Driven Simulation can be exploited to help not only better understand what is happening in such systems but also provide alternative models for the intelligent solutions they support, such as context inference. We demonstrate this using a real-world example and discuss the feasibility of extending these alternative process models to be viewed as simulation. We envision automated steps that would result in traditional simulation models of context using Process Mining.

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: Pileggi, P., Rivero-Rodriguez, A., Nykänen, O.
Number of pages: 6
Pages: 70-75
Publication date: 2015

Host publication information

Title of host publication: Computational Intelligence, Communication Systems and Networks (CICSyN), 2015 7th International Conference on
Publisher: IEEE
ISBN (Print): 9781467370165
Source: Mendeley
Source ID: 3b5a7052-83aa-3c38-ba30-f4290873ae25

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

Towards the Structure of a Class of Permutation Matrices Associated With Bent Functions

Bent functions, that are useful in cryptographic applications, can be characterized in different ways. A recently formulated characterization is in terms of the Gibbs dyadic derivative. This characterization can be interpreted through permutation matrices associated with bent functions by this differential operator. We point out that these permutation matrices express some characteristic block structure and discuss a possible determination of it as a set of rules that should be satisfied by the corresponding submatrices. We believe that a further study of this structure can bring interesting results providing a deeper insight into features of bent functions.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Computing Sciences, Mathematical Institute of SASA, Faculty of Electronic Engineering, Technical University of Dortmund
Contributors: Stankovic, R. S., Stankovic, M., Astola, J., Moraga, C.
Pages: 83-105
Publication date: 2018

Host publication information

Title of host publication: Proceedings of the 13 International Workshop on Boolean Problems
Publisher: Springer
ISBN (Print): 978-3-030-20322-1
ISBN (Electronic): 978-3-030-20323-8

Bibliographical note

EXT="Stankovic, Radomir S."

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

Towards responsive workspaces - identification of service paths for time-and-place independent work

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering
Contributors: Petrulaitiene, V., Rytkönen, E., Nenonen, S.
Number of pages: 11
Pages: 1141-1151
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
Volume: V
Publisher: Tampere University of Technology
Editor: Achour, N.
ISBN (Electronic): 978-952-15-3745-5
Keywords: workspace, services, framework, time-and-place independent work
Source: Bibtex
Source ID: urn:1d05ebdd695106100b0dcf2f1e35f399

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

Towards low carbon economy - Green bond and asset development

Green Bonds are an instrument for driving the environmentally friendly and low-carbon economy. Green Bonds are bonds whose proceeds are earmarked for and transparently channelled to environmentally-friendly projects and activities. The real estate industry has a multi-decade track record of addressing environmental impacts through the use of rating systems certified by independent third parties. Green building certification systems address multiple environmental impacts and measure outcomes across all asset lifecycle phases. Using bonds for such investments is not new but in an effort to improve transparency and increase opportunities both for issuers and investors it can take a more active role in combating climate change. The goal of this paper is to describe how property developer can use Green Bond as one instrument in sustainable life cycle management and continuous development of properties. The method used is a case study of Finnish property owner company, which commits to invest the funds raised in certified, environmentally responsible and energy-efficient projects. The single case study method employed in this study captured the process of case organization towards Green Bond initiative. More precisely the data was gathered by qualitative document analysis (QDA). The results show that company begin the process with focusing on environmental sustainability especially putting the effort in the first phase to energy efficiency. The Green Bond initiative provided a new avenue towards economic sustainability. Additionally, issues like shared use of facilities was discussed from social sustainability perspective. The results are interesting for property owners who are interested in systematic development towards regenerative built environment.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Civil Engineering, University Properties of Finland Ltd
Contributors: Nenonen, S., Koski, A., Lassila, A. P., Lehikoinen, S.
Publication date: 2019
Peer-reviewed: Yes

Publication information

Journal: IOP Conference Series: Earth and Environmental Science
Volume: 352
Issue number: 1
Article number: 012028
ISSN (Print): 1755-1307
Ratings: 
  • Scopus rating (2019): SJR 0.175 SNIP 0.514
Original language: English
ASJC Scopus subject areas: Environmental Science(all), Earth and Planetary Sciences(all)

Bibliographical note

EXT="Lassila, A. P."

Source: Scopus
Source ID: 85075015413

Research output: Contribution to journalConference articleScientificpeer-review

Towards high power flip-chip long-wavelength semiconductor disk lasers

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: Surface Science, Frontier Photonics
Contributors: Rantamäki, A., Saarinen, E., Lyytikäinen, J., Heikkinen, J., Lahtonen, K., Valden, M., Okhotnikov, O.
Publication date: 2015

Host publication information

Title of host publication: Proceedings of SPIE
Volume: 9349
Publisher: SPIE
ISBN (Electronic): 9781628414394

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

Towards digital campus – improving usability of learning environments

Purpose: Digital learning environments provide new possibilities for organizing education. Additionally, these developments are transforming the existing and future learning environments. This research is based on a national project called DigiCampus in Finland. The project develops e.g. physical-digital learning landscapes for campuses.
Design/methodology/approach: The approach is qualitative, more specifically descriptive and explorative. The approach was chosen to identify the functional and structural layers of retrofitted, digitally enriched learning environments. Three case studies are conducted in different universities. The first case study investigates the maturity level of the digital learning environments of existing buildings. The second case study introduces a multi-location classroom in two different campuses. The third case study presents a learning environment which is enriched by using different kind of smart tools which gather data for different purposes about the use of the learning environment. The chosen cases had similar intentions to use digitalization to update the existing spaces according to new ways of learning and teaching. The emphasis in each case was in the increase of collaboration and widening diversity in the campus environment. The data used in the analysis was comprised of the documentation of project plans for the retrofitting and other written material.
Findings: Cross-case analysis indicates that both the digital and the physical architecture can be understood as layers for different functions and different stakeholders. Such structure provides a framework for developing usable digital learning environments.
Practical implications: The outcome of the research is a checklist for usable digital learning environments, which points out the topics to be co-created among different stakeholders in developing the digital campus.
Originality/value: The research provides an evidence-based overview of usability of digital learning environments emphasizing especially the retrofitting challenges in the process of developing both physical and digital usability simultaneously.

Keywords: learning landscape, digital, physical, usability, campus

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Civil Engineering, Research group: Responsible Construction, Information and Knowledge Management, University of Helsinki, Helsinki University
Contributors: Nenonen, S., Sandström, N., Nevgi, A., Danivska, V., Jalo, H.
Number of pages: 11
Publication date: 2019

Host publication information

Title of host publication: CIB World Building Congress 2019 : 17-21, June, 2019, The Hong Kong Polytechnic University, Hong Kong, China
Place of publication: Hong Kong
Publisher: INTERNATIONAL COUNCIL FOR RESEARCH AND INNOVATION IN BUILDING AND CONSTRUCTION (CIB)
ISBN (Electronic): 978-962-367-821-6

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

Towards Capturing Interaction in the Interactive Use of Controls - The Role of Reflection

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Industrial Management, Research group: Cost Management Center
Contributors: Suomala, P., Hilden, S.
Publication date: 2015

Host publication information

Title of host publication: 8th conference on performance measurement and management control, Nice, France, September 30 October 2, 2015

Publication series

Name: Conference on performance measurement and management control
Publisher: European Institute for Advanced Studies in Management
ISSN (Print): 2295-1660

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

Towards Business Potential of Workplace Services in Finland

People no longer work as they worked 15 years ago. One of the major changes, as Laing (2013) stated, is that the employee no longer has to go to work, but information technology brings the work to the employee. Due to the independency of work from time and place, employees are working in a new way in multiple locations. For service providers, this offers a new business field. Thus, the paper focuses on this new business opportunity. The aim of the paper is to identify the business potential to build up and elaborate the workplace service business. Interviews with national workplace service providers and international workplace experts were conducted in order to get practical insight on the topic. Based on the interviews, two development steps are required to utilise the new business opportunity: (1) the transaction-oriented way to provide workplace services should be substituted by new business models, and (2) the workplace service should be re-thought and re-designed as a service that is not solely dependent on physical space. Based on the new business model and service, a new business opportunity could be harnessed.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Information Management and Logistics, Research group: Novi, Aalto University
Contributors: Jylhä, T., Vuolle, M., Nenonen, S., Virtaneva, M.
Number of pages: 6
Pages: 518-523
Publication date: 2015

Host publication information

Title of host publication: 8th Nordic Conference on Construction Economics and Organization : May 28-29 2015, Tampere, Finland
Volume: 21
Publisher: Elsevier

Publication series

Name: Procedia Economics and Finance
ISSN (Print): 2212-5671
Keywords: Workplace services, multi-locational work, co-working, business model

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

Towards better learning by increased student engagement

Three basic courses obligatory in the bachelor studies of civil engineering were redesigned to increase the student engagement and to support the continuous learning through increased interaction and feedback. Two new courses on geotechnical engineering and soil mechanics were created summing up to the same total credits as the three old courses on engineering geology, soil investigations and soil mechanics.

The analysis of the learning outcomes and the core content formed the base of the development work. Good components, such as soil laboratory and field exercises enabling learning by going and giving memorable experiences, as graduated students commented, were retained, but developed further to enable the self-directed group work and flipped learning. The calculation exercise groups in soil mechanics course were cut down into smaller groups to support collateral learning and to dissipate the gap between the teacher and student. Personal design calculation assignments were added with direct feedback. Weekly moodle quizzes were used to motivate the continuous learning and the lecture attendance.

The results after two and three implementations of the new courses were analysed based on the grades, passing percentage and student feedback, comparing the three old courses with the two new courses. Based on the both the grades and the passing percentage the learning results were improved. Especially the number and achieved grades of student passing with the interval exams on soil mechanics course were improved significantly. In the new basic course, where the final exam is no longer compulsory, the result is not as evident, since during the first two implementations the highest grade possible to achieve by assignments was three.

One important achievement was improving the reputation of these courses. Senior students pass on their attitudes to the young, and created prejudices effect on the student’s performance. It takes several years to chance the image. Therefore, it’s important to react to the student feedback and to make the development work and teacher’s interest visible to the students.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research group: Earth Constructions
Contributors: Kuula, P. H., Leppänen, M. M., Penttilä, M. E.
Number of pages: 10
Publication date: 12 Sep 2016

Host publication information

Title of host publication: Proceedings of the 44th SEFI Annual Conference 2016 : 12th-15th September 2016, Tampere, Finland
Place of publication: Tampere
Publisher: European Society for Engineering Education SEFI
Editors: Niemi, T., Järvinen, H.
ISBN (Print): 978-2-87352-014-4

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

Towards better knowledge work experiences with new Ambient workspace: Concept and prototype

This paper presents a conceptual design of a dynamic and personalizable knowledge workspace suitable for collaboration in academic contexts. The concept of such workspace is aimed to cater the needs of students-As knowledge workers-for flexibility in various types of group and individual knowledge tasks. The research is focused on revealing challenges and obstacles faced by students who perform their daily knowledge work in current workspaces at various premises of Finnish campus. We propose solution that utilizes information technology and interior design. Based on literature on Ambient Intelligence and knowledge work, as well as our empirical user research, we designed a concept of flexible, transformable and user-friendly campus workspace with various features and functionalities. The concept is presented through visualizations and a semi-functional three-dimensional cardboard prototype. The workspace design itself is the main contribution of the current research. Dynamism, flexibility, personalization as well as features of the physical and mental engagement are principal novelties of proposed workspace for university students.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Pervasive Computing, Electronics and Communications Engineering
Contributors: Olshannikova, E., Ometov, A., Anagnostaki, T., Hasan, N., Kuketaeva, A., Ahtinen, A., Olsson, T., Koucheryavy, Y.
Number of pages: 9
Pages: 173-181
Publication date: 4 Apr 2017

Host publication information

Title of host publication: Proceedings of the 19th Conference of Open Innovations Association, FRUCT 2016
Publisher: IEEE COMPUTER SOCIETY PRESS
ISBN (Electronic): 9789526839752
ASJC Scopus subject areas: Computer Science(all), Electrical and Electronic Engineering
Source: Scopus
Source ID: 85018626230

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

Towards automation security research and training environment

An automation system is a networked software product in hardware intensive environment and requires more than normal IT security skills. Building an automation security research and training environment for automation requires knowledge on the internal workings of an automation system as well as creative approach on how to keep the system secure where needed, and broken when required for development and teaching purposes. The main challenges are to combine the amount of automation specific hardware and to create good practices which keep the need for maintenance, versatility and pedagogical aspects in balance. This paper presents a project called TUTCyberLabs, the learned lessons and the design decisions. The main focus is on Department of Automation Science and Engineering environment ASECyberLab.

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, Research area: Dynamic Systems, Department of Pervasive Computing, Research area: Information security, Department of Electrical Engineering, Research area: Power engineering, Ajeco Inc, VTT Technical Research Centre of Finland
Contributors: Seppälä, J., Salmenperä, M., Koivisto, H., Harju, J., Repo, S., Holmström, J., Ahonen, P.
Publication date: 18 Mar 2015

Host publication information

Title of host publication: Proceedings of Automaatio XXI, 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

Bibliographical note

ORG=ase,0.8
ORG=tie,0.1
ORG=dee,0.1

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

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

Towards a Classification Schema for Development Technologies: an Empirical Study in the Avionic Domain

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: University of Kaiserslautern, Free University of Bozen-Bolzano, Free University of Bolzano-Bozen, Liebherr-Aerospace
Contributors: Taibi, D., Lenarduzzi, V., Dieudonne, L., Plociennik, C.
Number of pages: 11
Pages: 125-135
Publication date: 1 Aug 2015
Peer-reviewed: Yes

Publication information

Journal: INTERNATIONAL JOURNAL ON ADVANCES IN SOFTWARE
Volume: 8
Issue number: 1&2
ISSN (Print): 1942-2628
Original language: English

Research output: Contribution to journalArticleScientificpeer-review

Toward Manageable Data Sources

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Research group: Software Engineering and Intelligent Systems, Pervasive Computing
Contributors: Sillberg, P.
Pages: 485-494
Publication date: Jun 2018

Host publication information

Title of host publication: EJC 2018 : Proceedings of the 28th International Conference on Information Modelling and Knowledge Bases
Publisher: Transport and Telecommunication Institute
Editors: Endrjukaite, T., Kangassalo, H., Thalheim, B., Kiyoki, Y.
ISBN (Electronic): 978-9984-818-89-4

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

Tools, pedagogical models, and best practices for digital storytelling

Sharing photos and short videos with others has become increasingly popular among youth. Although sharing videos is a common activity among youth, schools are not using digital videos for learning. There is a need to study the pedagogical models that could be used in designing classroom activities involving the use of digital videos. In this chapter, digital video storytelling will be discussed in the context of learning. In this chapter, pedagogical models, examples, best practices, and outcomes that illustrate how students become engaged and motivated when using digital storytelling in knowledge creation in cross-cultural settings will be presented. The pedagogical models discussed in this chapter are Global Sharing Pedagogy (GSP) and Video Inquiry Learning (VIL). A review of existing tools and practices for digital video storytelling will be presented. The results show that students can become highly engaged in learning through digital storytelling.

General information

Publication status: Published
MoE publication type: A3 Part of a book or another research book
Organisations: Research group: TUT Game Lab, Pervasive Computing, University of Helsinki
Contributors: Multisilta, J., Niemi, H.
Publication date: Jul 2017

Host publication information

Title of host publication: Encyclopedia of information science and technology
Publisher: IGI Global
Editor: Khosrow-Pour, M.
Edition: 4th
ISBN (Electronic): 9781591405535

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

Time-resolved characterization of primary and secondary particle emissions of a modern gasoline passenger car

Changes in traffic systems and vehicle emission reduction technologies significantly affect traffic-related emissions in urban areas. In many densely populated areas the amount of traffic is increasing, keeping the emission level high or even increasing. To understand the health effects of traffic related emissions, both primary and secondary particles that are formed in the atmosphere from gaseous exhaust emissions need to be characterized. In this study we used a comprehensive set of measurements to characterize both primary and secondary particulate emissions of a modern gasoline passenger car. Our aerosol particle study covers the whole process chain in emission formation, from the engine to the atmosphere, and takes into account also differences in driving patterns. We observed that in mass terms, the amount of secondary particles was 13 times higher than the amount of primary particles. The formation, composition, number, and mass of secondary particles was significantly affected by driving patterns and engine conditions. The highest gaseous and particulate emissions were observed at the beginning of the test cycle when the performance of the engine and the catalyst was below optimal. The key parameter for secondary particle formation was the amount of gaseous hydrocarbons in primary emissions; however, also the primary particle population had an influence. Thus, in order to enhance human health and wellbeing in urban areas, our study strongly indicates that in future legislation, special attention should be directed into the reduction of gaseous hydrocarbons.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Department of Physics, Research area: Aerosol Physics, Finnish Meteorological Institute, Helsinki, VTT Technical Research Centre of Finland, Pennsylvania State University, Atmospheric Composition Research, Finnish Meteorological Institute
Contributors: Karjalainen, P., Timonen, H., Saukko, E., Kuuluvainen, H., Saarikoski, S., Aakko-Saksa, P., Murtonen, T., Dal Maso, M., Ahlberg, E., Svenningsson, B., Brune, W. H., Hillamo, R., Keskinen, J., Rönkkö, T.
Number of pages: 29
Pages: 33253-33282
Publication date: 25 Nov 2015
Peer-reviewed: Yes

Publication information

Journal: Atmospheric Chemistry and Physics Discussions
Volume: 15
Issue number: 22
ISSN (Print): 1680-7367
Ratings: 
  • Scopus rating (2015): SNIP 0.101
Original language: English

Research output: Contribution to journalArticleScientificpeer-review

Three-color vector nematicon

Light localization via reorientation in nematic liquid crystals supports multi-component optical spatial solitons, i.e., vector nematicons. By launching three optical beams of different wavelengths and the same input polarization in a bias-free planar cell, we demonstrate a three-color vector nematicon which is self-trapped thanks to its incoherent nature.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Photonics, Politechnika Warszawska, Univ Roma Tre, Roma Tre University, Dept Elect Engn, NooEL, University “Roma Tre”, Aerosol Physics Laboratory
Contributors: Laudyn, U. A., Kwaśny, M., Karpierz, M. A., Assanto, G.
Number of pages: 3
Pages: 36-38
Publication date: 2017
Peer-reviewed: Yes

Publication information

Journal: Photonics Letters of Poland
Volume: 9
Issue number: 2
ISSN (Print): 2080-2242
Ratings: 
  • Scopus rating (2017): CiteScore 0.48 SJR 0.25 SNIP 0.446
Original language: English
ASJC Scopus subject areas: Electronic, Optical and Magnetic Materials
Electronic versions: 
Source: Scopus
Source ID: 85021814168

Research output: Contribution to journalArticleScientificpeer-review

Third places and user preferences – affordances in the cities

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering
Contributors: Nenonen, S., Rahtola, R., Kojo, I.
Number of pages: 9
Pages: 17-25
Publication date: 1 Aug 2016

Host publication information

Title of host publication: Proceedings of CFM's Second Nordic Conference: Facilities Management Research and Practice; : 29-30 AUGUST 2016, Denmark
Editor: Jensen, P. A.
ISBN (Print): 9788750211044
Keywords: workspace management, new ways of working, discourse, typologies, spatial transformation
Source: Bibtex
Source ID: urn:cdf1ee83af90706e85ce79e70d9e4a36

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

The World Innovation Stock Exchange- shared value for individuals, business and society

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: Markopoulos, E., Vanharanta, H.
Number of pages: 8
Pages: 595-602
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

The Workplace for Researchers – Enhancing Concentration and Face-to-face Interaction

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering
Contributors: Huhtelin, M., Nenonen, S.
Pages: 753-764
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the CIB World Building Congress 2016: Volume I - Creating built environments of new opportunities
Publisher: Tampere University of Technology. Department of Civil Engineering
ISBN (Electronic): 978-952-15-3741-7

Bibliographical note

INT=rak,"Huhtelin, Mervi"

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

The Web as a software platform: Ten years later

In the past ten years, the Web has become a dominant deployment environment for new software systems and applications. In view of its current popularity, it is easy to forget that only 10-15 years ago hardly any developer would write serious software applications for the Web. Today, the use of the web browser as a software platform is commonplace, and JavaScript has become one of the most popular programming languages in the world. In this paper we revisit some predictions that were made over ten years ago when the Lively Kernel project was started back in 2006. Ten years later, most of the elements of the original vision have been fulfilled, although not entirely in the fashion we originally envisioned. We look back at the Lively Kernel vision, reflecting our original goals to the state of the art in web programming today.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Pervasive Computing, Nokia, University of Helsinki
Contributors: Taivalsaari, A., Mikkonen, T.
Number of pages: 10
Pages: 41-50
Publication date: 2017

Host publication information

Title of host publication: WEBIST 2017 - Proceedings of the 13th International Conference on Web Information Systems and Technologies
Publisher: SCITEPRESS
ISBN (Electronic): 9789897582462
ASJC Scopus subject areas: Computer Networks and Communications, Information Systems
Keywords: HTML5, JavaScript, Live object systems, Lively kernel, Web applications, Web programming
Source: Scopus
Source ID: 85024473230

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

The use of mathematical modeling for the development of a low cost fuzzy gain schedule neutralization control system

General information

Publication status: Published
MoE publication type: A3 Part of a book or another research book
Organisations: Automation and Hydraulic Engineering, Faculty of Biomedical Sciences and Engineering, Federal Institute of São Paulo, Universidade Estadual de Campinas, Federal University of Uberlândia
Contributors: Sislian, R., da Silva, F. V., Gedraite, R., Jokinen, H., Rajan, D. K.
Number of pages: 15
Pages: 525-539
Publication date: 4 Feb 2017

Host publication information

Title of host publication: Transactions on Engineering Technologies : World Congress on Engineering and Computer Science 2015
Publisher: Springer Singapore
ISBN (Print): 9789811027161
ISBN (Electronic): 9789811027178
ASJC Scopus subject areas: Medicine(all), Biochemistry, Genetics and Molecular Biology(all), Immunology and Microbiology(all)

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

The target reliability of the eurocodes

The target reliability of the Eurocodes is given clearly: One-year reliability is 4.7 and 50-year reliability 3.8 correspondingly. However, the implementation of the direction is unclear in many ways: The reliability calculations for the Eurocodes are made sometimes by using one-year reliability 4.45 or 4.2. The Eurocodes does not instruct for which reference time the reliability is calculated. Normally, the reliability is calculated for the service time, 50 years, but sometimes for one year. The paper concludes that the reliability must be calculated for the service time. The independent versus the dependent load combination results in different reliability. The independent load combination results in higher reliability with fixed safety factors and up to about 10 % less safety factors with fixed target reliability when two loads are combined and with three loads even less. The loads are combined in the Eurocodes sometimes independently and sometimes dependently. Arguments are given here that the loads must be combined dependently. The variable load distribution is generally assumed Gumbel. However, this distribution is excessively safe as it has a robust upper tail which unrealist ically affects the reliabilit y. Normal distribut ion is one possible alternative, however obviously somewhat unsafe. In the paper, the safety factors are given based on Gumbel and normal distribution. The combination of 20 % Gumbel and 80 % normal distribution is one feasible option. In the current reliability calculation 50-year return load, i.e. 0.98 fractile of the load distribution is usually set at the characteristic load with the target reliability of the service time. This means that one-year loads are only considered in the reliability calculation. For this reason the variable load safety factors are unrealistically low as the target reliability corresponds to the service time loads. Gumbel distribution partly counterbalances the unsafe error but the overall effect is unsafe. The material factors of the Eurocodes are given based on the current calculation and modified calculation. The paper concludes that the reliability should be calculated for the service time loads with the distributions set at the service time location and the reference reliability should be 3.8. The issue of partial factors and design values is shortly addressed and concluded that the design value code is simple with better reliability accuracy than the current partial factor code when the characteristic variable load is made variable.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering
Contributors: Poutanen, T.
Number of pages: 7
Pages: 202-208
Publication date: 2015

Host publication information

Title of host publication: Safety, Robustness and Condition Assessment of Structures
Publisher: International Association for Bridge and Structural Engineering (IABSE)

Publication series

Name: IABSE Symposium Report
ISSN (Print): 2221-3783
ASJC Scopus subject areas: Civil and Structural Engineering, Building and Construction, Safety, Risk, Reliability and Quality
Keywords: Code, Design value, Gumbel distribution, Normal distribution, Partial factor, Reliability
Source: Scopus
Source ID: 84929340776

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

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

The role of product retailers' service adoption in services introduction - A case of services supplementing consumer durables.

Retailers marketing manufacturers’ services have a significant role in service
success and therefore their adoption of the service and commitment to its
sales needs to be ensured. However, this topic has gained only limited
attention in the scientific literature while majority of the adoption literature has
focused on products. This paper discusses retailer adoption of service meant
for end customers by reviewing the antecedents of adoption and effect of
retailer’s background to service adoption. The focus is on a complementary
product-related guarantee service. The data was collected by a survey among
retailers of a consumer durables manufacturer in three countries. The results
revealed that retailers had mainly positive attitudes towards the reviewed
service indicating also service adoption. However, the adoption of the service
did not ensure that the service was marketed for all the potential customers.
Noteworthy is that retailers’ attitudes were positively related with their own
service deployment. Thus, manufacturers utilizing retailers in service
distribution need to invest in retailers’ service adoption but also ensure
trialability and possibilities for fluent marketing of the service.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services
Contributors: Nenonen, S., Vaittinen, E.
Number of pages: 10
Pages: 762-771
Publication date: 2015

Host publication information

Title of host publication: The 14th International Research Symposium on Service Excellence in Management : QUIS14
Place of publication: Shanghai
Editors: Zhao, X., Zhang, J. J., Han, H. J.
ISBN (Electronic): 978-0-692-46156-3

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

The role of performance measurement in supplier-buyer value-creation

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
Contributors: Jääskeläinen, A., Thitz, O., Heikkilä, J.
Publication date: 2017

Host publication information

Title of host publication: Proceedings of 9th Conference on Performance Measurement and Management Control : 13-15 September 2017, Nice, France
Publisher: EIASM

Publication series

Name: Conference on Performance Measurement and Management Control
Publisher: EIASM
ISSN (Electronic): 2295-1660

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

The role of inorganics in modelling of biomass gasification

In this work, a summary of the research carried out about the role of inorganic elements in biomass gasification is presented. The research work has focused on the catalytic effects of alkali and alkaline earth metals in char gasification. The work has included gasification experiments using thermogravimetric analysis (TGA) and fluidized beds as well as modeling techniques. The results of the research presented in this paper indicate that the laboratory measured TGA reactivity numbers and correlations (including the effect of fuel ash inorganics) are possible to be converted to numbers predicting carbon conversion in a large scale fluidized bed gasification reactor. The model, called Carbon Conversion Predictor, is a relatively simple and transparent tool for the comparison of the gasification reactivity of different fuels in fluidized bed gasification.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Chemistry and Bioengineering, Research group: Bio- and Circular Economy, Univ Seville, University of Sevilla, Chem & Environm Engn Dept, Bioenergy Grp, Escuela Super Ingenieros, Åbo Akademi University, Process Chemistry Center
Contributors: Konttinen, J., Kramb, J., DeMartini, N., Gomez-Barea, A.
Number of pages: 5
Pages: 443-447
Publication date: 13 Jun 2017

Host publication information

Title of host publication: EUBCE 2017 Online Conference Proceedings
Publisher: ETA-Florence Renewable Energies
Editors: Ek, L., Ernrooth, H., Scarlat, N., Grassi, A., Helm, P.
ISBN (Electronic): 978-88-89407-17-2

Publication series

Name: European biomass conference and exhibition proceedings
Publisher: ETA Florence revewable energies
ISSN (Electronic): 2282-5819

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

The role of film processing in the large-area dielectric breakdown performance of nano-silica-BOPP films

This paper summarizes the effects of various compositional, structural and film processing factors on the breakdown behavior of laboratory- and pilot-scale melt-compounded bi-axially oriented polypropylene (BOPP) nanocomposite films with silica fillers. A self-healing multi-breakdown measurement approach has been extensively utilized for large-area breakdown characterization of a large number of material variants from different processing trials. The results suggest that although the optimum level of silica presumably resides at the low fill-fraction range (~1 wt-%), the silica content itself is not the only determining factor, as compounds with equal silica content were found to exhibit large differences in the breakdown properties depending on the compounding and film processing steps. Dispersion quality and filler agglomeration (in both the nm- and µm-scale) appear to be of great importance. Indications of possible interaction between nano-silica and co-stabilizer Irgafos 168 are also presented. Overall, the laboratory- and pilot-scale film processing trials suggest that up-scaling of the polymer nanocomposite production is sensible with traditional melt-blending technology, although further development and optimization of nanocomposite formulations and processing is necessary.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electrical Engineering, Research area: Power engineering, VTT Technical Research Centre of Finland
Contributors: Rytöluoto, I., Lahti, K., Ritamäki, M., Karttunen, M.
Number of pages: 6
Publication date: 2015

Host publication information

Title of host publication: 24th Nordic Insulation Symposium on Materials, Components and Diagnostics (NORD-IS), Proceedings
Place of publication: Copenhagen, Denmark
ISBN (Print): 978-82-321-0274-7

Publication series

Name: Proceedings of the Nordic Insulation Symposium
No.: 24
ISSN (Electronic): 2535-3969

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

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 base substrate on barrier and convertability properties of Water based barrier coated (WBBC) paper and paperboard

Water based barrier coatings (WBBC) have been studied intensively during the past years in order to replace the traditional barrier materials such as polyethylene (PE), flurochemicals and waxes. One of the largest challenges for these WBBC's has been a high risk for pinholes originating from the base substrate leading into discontinuity in the dispersion layer and poorer barrier properties. By increasing the coat weight, the amount of pinholes can be reduced but this may lead into economical and quality issues, thus optimization is needed. In this study, the role of base material in dispersion coverage and resulting barrier properties was investigated by characterizing different base materials. The barrier properties analyzed were grease and oil resistance and water and water vapour barrier, also convertability properties were examined. The results showed that base substrate plays a key role when WBBC's are used. If the structure of the base paper is very open or very rough, gaining good barrier properties is difficult and the amount of pinholes increases which affects most significantly grease resistance. With very porous and rough base material best possible barrier properties at certain total coat weight were reached by double coating and by using pigments with high aspect ratio.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Materials Science, Research group: Paper Converting and Packaging, CH-Polymers Oy
Contributors: Miettinen, P., Ahokas, M., Engström, T., Heinonen, J., Auvinen, S.
Number of pages: 13
Pages: 220-232
Publication date: 2017

Host publication information

Title of host publication: Paper Conference and Trade Show, PaperCon 2017 : Renew, Rethink, Redefine the Future, Minneapolis, Minnesota, USA, 23-26 April 2017
Volume: 1
Publisher: TAPPI Press
ISBN (Electronic): 9781510847286
ASJC Scopus subject areas: Forestry, Plant Science, Industrial and Manufacturing Engineering
Source: Scopus
Source ID: 85041534325

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

Thermomechanical properties of overmold epoxies in MEMS packaging

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Electrical Engineering, Research area: Reliability
Contributors: Fard Sanei, M. A., Kiilunen, J., Pippola, J., Lahokallio, S., Frisk, L.
Number of pages: 5
Pages: 175-179
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the IMAPS Nordic Annual Conference , June 8-9, 2015, Helsingør, Denmark
Publisher: IMAPS Nordic
ISBN (Print): 9781510808133

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

Thermal and moisture properties of calcium silicate insulation boards

The purpose of this research was to determine thermal and moisture properties of calcium silicate insulation boards available on the Finnish market. Ruggedness testing and test arrangement development were done related to the pressure plate test, which was used to measure desorption isotherms in capillary range. Four calcium silicate and one calcium hydroxide board were examined. The determined material properties are water vapour permeability, water absorption coefficient, capillary saturation water content, moisture sorption isotherm in hygroscopic and capillary range, thermal conductivity and specific heat capacity. Ruggedness tests and development were done to the pressure plate measurement method. Capacitance needles were tested as a method to evaluate the state of equilibrium and different vacuum saturation methods were tested.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Civil Engineering, Research group: Building Physics
Contributors: Tuominen, E., Tuominen, O., Vainio, M., Ruuska, T., Vinha, J.
Number of pages: 7
Publication date: 2019
Peer-reviewed: Yes

Publication information

Journal: MATEC Web of Conferences
Volume: 282
Article number: 02065
ISSN (Print): 2274-7214
Ratings: 
  • Scopus rating (2019): SJR 0.166 SNIP 0.714
Original language: English
ASJC Scopus subject areas: Civil and Structural Engineering
Electronic versions: 

Bibliographical note

INT=ceng,"Tuominen, Olli"
INT=ceng,"Vainio, Maarit"

Research output: Contribution to journalConference articleScientificpeer-review

The Parallel Diode and Trap Behaviour of Ternary Polymer Solar Cells

This paper investigates the use of ternary blends (two donor polymers and fullerene acceptor) in bulk-heterojunction (BHJ) photovoltaic devices to compare the parallel diode and trap model. Our initial study involved the blending of equivalent quantities of two of the three chosen complimentary donor polymers (red, green, blue) with [60]PCBM. Through EQE measurements, it was shown that even devices with blends exhibiting poor efficiencies, caused by traps, both polymers contributed to the PV effect. However, traps were avoided to create a parallel-like BHJ when two polymers were chosen with the appropriate HOMO-HOMO energy band alignment. Ternary blend device performance is explained in terms of transport properties issued from photogenerated current vs. light intensity and bias polarization studies, as well as a dark conductivity vs. temperature investigation. Additionally, the parallel diode circuit model is implemented to calculate the blend combination which exhibits the highest power conversion efficiency. Device optimization issued from both models is compared.

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Univ Limoges, University of Limoges, XLIM CNRS 7252, Former organisation of the author, Queens Univ, Queens University - Canada, Dept Chem, Univ Limoges, Centre National de la Recherche Scientifique (CNRS), University of Limoges, XLIM, CNRS, UMR 6172
Contributors: Kraft, T., Cristoferi, C., Trigaud, T., Nunzi, J., Ratier, B.
Publication date: Sep 2014

Host publication information

Title of host publication: EU PVSEC Proceedings
Volume: EU PVSEC 2014
Publisher: EU PVSEC
Article number: 3BV.5.23
ISBN (Electronic): 3-936338-34-5

Bibliographical note

ISBN: 3-936338-34-5

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

Theory driven design and real prototyping of biomass pyrolitic stove

This article introduces a design approach integrating early design phase and model based engineering in order to develop innovative biomass gasifier system for rural communities in Africa. The need for such a systemic perspective is imposed by the imbrication of technical, ecological and cultural issues that cannot be ignored while designing new technology. The article proposes an integrated generic design theory approaches to discover and rank by order of importance system's variables and to single out most desired design parameters. A pre-design user requirement assessment was carried out to identify detailed stove's functions. Causal-ordering diagrams sketched for system's modelling. System functions were described graphically and synthesized through simple linear algebraic matrices. Contradictions in system functions were solved using Theory of Inventive Thinking (TRIZ 40). And system's optimization was done through simple Taguchi experimentation method. A two level L8 degree of freedom Taguchi table was used in the experimentation and optimization of the pyrolitic stove. The design approach was exemplified using the case of the "AKIBA" biomass stove.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Kenya Ind Res & Dev Inst, Aalto Univ, Aalto University, Aalto Univ Finland, Dept Engn Design & Prod, Sch Engn, Aalto Univ, Aalto University, Sch Sci & Technol, Dept Chem
Contributors: Ogeya, M. C., Coatanea, E., Medyna, G.
Number of pages: 10
Pages: 69-78
Publication date: 2013

Host publication information

Title of host publication: Design for Harmonies, Vol.9: Design Methods and Tools
Publisher: DESIGN SOC
Editors: Lindemann, U., Srinivasan, Kim, Y., Lee, S., Papalambros, P., Chen, W.

Publication series

Name: International Conference on Engineering Design
Publisher: DESIGN SOC
ISSN (Print): 2220-4334
Keywords: design theory, innovation, optimisation, early design phase, systems engineering
Source: WOS
Source ID: 000361026600008

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

Theory driven design and real proto typing of biomass pyrolitic stove

This article introduces a design approach integrating early design phase and model based engineering in order to develop innovative biomass gasifier system for rural communities in Africa. The need for such a systemic perspective is imposed by the imbrication of technical, ecological and cultural issues that cannot be ignored while designing new technology. The article proposes an integrated generic design theory approaches to discover and rank by order of importance system's variables and to single out most desired design parameters. A pre-design user requirement assessment was carried out to identify detailed stove's functions. Causal-ordering diagrams sketched for system's modelling. System functions were described graphically and synthesized through simple linear algebraic matrices. Contradictions in system functions were solved using Theory of Inventive Thinking (TRIZ 40). And system's optimization was done through simple Taguchi experimentation method. A two level L8 degree of freedom Taguchi table was used in the experimentation and optimization of the pyrolitic stove. The design approach was exemplified using the case of the "AKIBA" biomass stove.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Kenya Industrial Research and Development Institute (KIRDI), Aalto University School of Engineering, Department of Engineering Design and Production, Aalto University
Contributors: Ogeya, M. C., Coatanéa, E., Medyna, G.
Number of pages: 10
Pages: 69-78
Publication date: 2013

Host publication information

Title of host publication: Proceedings of the International Conference on Engineering Design, ICED
Volume: 9 DS75-09
ISBN (Print): 9781904670520
ASJC Scopus subject areas: Engineering (miscellaneous), Industrial and Manufacturing Engineering, Modelling and Simulation
Keywords: Design theory, Early design phase, Innovation, Optimisation, Systems engineering
Source: Scopus
Source ID: 84897650359

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

Theoretical 71-Concept Platform for Advancing Construction-related Business Management

Abstract The aim is to advance business management (BM) in constructionvia the independent literature review. 71 construction-related BM concepts have been published between 1990 and 2013. Focal firms are based in the OECD countries. 34 (48%) concepts are related to construction management (CM), 14 (20%) concepts to industrial management and international marketing, 12 (17%) concepts to project management (PM) and 11 (15%) concepts to corporate real estate. The combined share of 16 Porterian, 16 dynamism-based, 15 organisation-based, and 10 knowledge-based concepts is 81%. The 71-concept platform is neither highly theoretically advanced, nor highly applicable. The propositions are defined for advancement.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Department of Civil Engineering, Research group: Digitalization in the real estate and construction sector
Contributors: Huovinen, P.
Number of pages: 8
Pages: 80-87
Publication date: 2015
Peer-reviewed: Yes

Publication information

Journal: Procedia Economics and Finance
Volume: 21
ISSN (Print): 2212-5671
Original language: English
ASJC Scopus subject areas: Business, Management and Accounting(all)
Keywords: Applied research, business management, conceptualisation, construction, literature review, real estate, school of thought
Source: RIS
Source ID: urn:2259E842B1A87C3870EDBE85F572BB11

Research output: Contribution to journalArticleScientificpeer-review

The New Era of Crowdsourcing — Industrial Crowdsourcing

General information

Publication status: Published
MoE publication type: A3 Part of a book or another research book
Organisations: Department of Information Management and Logistics, Research group: Novi, Managing digital industrial transformation (mDIT), DIGILE – Finnish Center for Science and Innovation in the Internet Economy
Contributors: Kärkkäinen, H., Jussila, J., Erkinheimo, P.
Number of pages: 7
Pages: 25-31
Publication date: 2015

Host publication information

Title of host publication: Open Innovation Yearbook 2015
Place of publication: Brussel
Publisher: European Commission
Editor: Salmelin, B.
ISBN (Electronic): 978-92-79-43962-9
Keywords: crowdsourcing, industrial crowdsourcing

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

The logics taught and used at high schools are not the same

Typical treatises on propositional and predicate logic do not tell how to deal with undefined expressions, such as division by zero. However, there seems to be a sound (albeit inexplicit) reasoning system that addresses undefined expressions, because equations and inequations involving them are routinely solved in schools and universities without running into fundamental inconsistencies. In this study we discover this school logic and formalize its semantics. The need to do so arose when developing software that gives students feedback on every reasoning step of their solution, instead of just telling whether the roots that they finally report are the correct roots. The problem of undefined expressions has been addressed in computer science. However, school logic proves different from those approaches. School logic is based on a Kleene-style third “undefined” truth value and the treatment of “⇒” and “⇔” not as propositional operators but as reasoning operators.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Pervasive Computing, University of Tampere
Contributors: Valmari, A., Hella, L.
Number of pages: 15
Pages: 172-186
Publication date: May 2017

Host publication information

Title of host publication: Proceedings of the Fourth Russian Finnish Symposium on Discrete Mathematics
Place of publication: Turku
Publisher: TURKU CENTRE FOR COMPUTER SCIENCE
Editors: Karhumäki, J., Matiyasevich, Y., Saarela, A.
ISBN (Print): 978-952-12-3547-4

Publication series

Name: TUCS Lecture Notes
Publisher: Turku Centre for Computer Science
No.: 26
ISSN (Print): 1797-8823
ASJC Scopus subject areas: Mathematics(all)
Keywords: logic

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

The Extended 1-D (One-Dimensional) Discrete Phase Retrieval Problem

In this work we discuss some difficulties that can be encountered when one uses iterative methods for finding a solution of a onedimensional discrete phase retrieval problem. Iterative methods are widely used but, unfortunately, they often stagnate. We shall show that by using an extended form of the one-dimensional discrete phase retrieval problem, we can find a solution to the problem.

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), Technical University of Cluj-NapocaUniversitatea Tehnica din Cluj-Napoca
Contributors: Rusu, C., Astola, J.
Number of pages: 8
Pages: 640-647
Publication date: 2015

Host publication information

Title of host publication: Computer Aided Systems Theory – EUROCAST 2015 : 15th International Conference, Las Palmas de Gran Canaria, Spain, February 8-13, 2015, Revised Selected Papers
Publisher: Springer
ISBN (Print): 978-3-319-27339-6
ISBN (Electronic): 978-3-319-27340-2

Publication series

Name: Lecture Notes in Computer Science
Volume: 9520
ISSN (Print): 0302-9743
ISSN (Electronic): 1611-3349
ASJC Scopus subject areas: Computer Science(all), Theoretical Computer Science
Keywords: Phase retrieval, Signal reconstruction

Bibliographical note

EXT="Rusu, Corneliu"

Source: Scopus
Source ID: 84952332786

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

The Effects of Product Line Length on Firm Performance

What products to offer represents one of the most important strategic choices a firm has to make in order to survive in competitive environments. Decisions about the length and breadth of a firm's product line are difficult but vital to its success. Despite this, the performance effects of product line length are a topic of continuing discussion in the academia. There are also multiple ways to define both product line length and breadth, further hindering the analysis and comparison of the results. This study defines both product line length and breadth, and distinguishes them as separate dimensions of a firm's product portfolio. Additionally, the relationship between product line length and firm performance is analyzed through customer evaluations. The study is set in the digital camera industry, focusing on the new product introductions into the compact product category during 2000–2014. Our results offer indication that there exists an inverted U-shaped relationship between product line length and firm performance.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial and Information Management, Research group: Center for Innovation and Technology Research
Contributors: Kirjavainen, J., Mäkinen, S., Sommarberg, M.
Number of pages: 5
Publication date: 8 Oct 2018

Host publication information

Title of host publication: 2018 Portland International Conference on Management of Engineering and Technology (PICMET)
Publisher: IEEE
ISBN (Electronic): 978-1-890843-37-3
Keywords: Digital cameras , Industries , Length measurement , Lenses , Time measurement , Mirrors

Bibliographical note

jufoid=9093

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

The effects of neuron morphology on graph theoretic measures of network connectivity: The analysis of a two-level statistical model

We developed a two-level statistical model that addresses the question of how properties of neurite morphology shape the large-scale network connectivity. We adopted a low-dimensional statistical description of neurites. From the neurite model description we derived the expected number of synapses, node degree, and the effective radius, the maximal distance between two neurons expected to form at least one synapse. We related these quantities to the network connectivity described using standard measures from graph theory, such as motif counts, clustering coefficient, minimal path length, and small-world coefficient. These measures are used in a neuroscience context to study phenomena from synaptic connectivity in the small neuronal networks to large scale functional connectivity in the cortex. For these measures we provide analytical solutions that clearly relate different model properties. Neurites that sparsely cover space lead to a small effective radius. If the effective radius is small compared to the overall neuron size the obtained networks share similarities with the uniform random networks as each neuron connects to a small number of distant neurons. Large neurites with densely packed branches lead to a large effective radius. If this effective radius is large compared to the neuron size, the obtained networks have many local connections. In between these extremes, the networks maximize the variability of connection repertoires. The presented approach connects the properties of neuron morphology with large scale network properties without requiring heavy simulations with many model parameters. The two-steps procedure provides an easier interpretation of the role of each modeled parameter. The model is flexible and each of its components can be further expanded. We identified a range of model parameters that maximizes variability in network connectivity, the property that might affect network capacity to exhibit different dynamical regimes.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Research group: Computational Neuro Science-CNS, Department of Signal Processing, University of Oslo
Contributors: Acimovic, J., Mäki-Marttunen, T., Linne, M.
Publication date: 10 Jun 2015
Peer-reviewed: Yes

Publication information

Journal: Frontiers in Neuroanatomy
Volume: 9
Issue number: June
Article number: 76
ISSN (Print): 1662-5129
Ratings: 
  • Scopus rating (2015): CiteScore 2.73 SJR 1.852 SNIP 0.782
Original language: English
ASJC Scopus subject areas: Anatomy, Neuroscience (miscellaneous), Cellular and Molecular Neuroscience
Keywords: Graph theory, Motifs, Network connectivity, Neurite density field, Neuron morphology, Theoretical model
Source: Scopus
Source ID: 84935865748

Research output: Contribution to journalArticleScientificpeer-review

The Effects of Initial Moisture on Damp Problems of a Timber Framed Wall Construction - a Numerical Approach

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: University of Oulu
Contributors: Fedorik, F., Malaska, M.
Pages: 18-23
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the XII Finnish Mechanics Days : Finnish mechanics days
Place of publication: Espoo, Finland
Publisher: Finnish Association for Structural Mechanics
Editors: Kouhia, R., Mäkinen, J., Pajunen, S., Saksala, T.
ISBN (Print): 978-952-93-5608-9 ISBN-E 978-952-93-5609-6

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

The effect of USB ground cable and product dynamic capacitance on IEC61000-4-2 qualification

EC61000-4-2 discharge stress levels are studied with varying product capacitance and ground connections. Stress levels are evaluated based on the measured and simulated peak current, peak power, pulse rise time, and energy transfer along to the USB cable. These stress parameters can be significantly affected by adjusting the test setup.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Sensing Systems for Wireless Medicine (MediSense), Department of Electronics and Communications Engineering, Research group: Wireless Identification and Sensing Systems Research Group
Contributors: Tamminen, P., Ukkonen, L., Sydänheimo, L.
Number of pages: 10
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: 7B.2
ISBN (Print): 9781479988952
ASJC Scopus subject areas: Engineering(all)
Keywords: USB, IEC61000-4-2, ESD, EMC, cable
Electronic versions: 

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

The effect of tungsten carbide particles content in a weld deposit on its abrasion resistance

This paper describes the study of a weld deposit which contains tungsten carbide particles. For testing the process of gas metal arc welding in a protective atmosphere of a mixed gas with two types of cored wires were used. The selected cored electrode of a "F-Durit G" type already contains the tungsten carbide particles. The second used option was a cored electrode of a "Megafil A 864M" type with an increased boron content. For the second variant tungsten carbide particles with a 1-2 mm size were added to the weld pool, and a composite material layer was thus created. For the mentioned test two different levels of welding parameters were selected and the final weld deposit properties, particularly their abrasion resistance, were examined.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Materials Science, VSB-Technical University Ostrava, Czech Republic, University of Osijek
Contributors: Hlavatý, I., Kozák, J., Krejci, L., Samardzic, I., Tuominen, J.
Number of pages: 5
Pages: 1345-1349
Publication date: Oct 2017
Peer-reviewed: Yes

Publication information

Journal: Technical Gazette - Technicki vjesnik
Volume: 24
Issue number: 5
ISSN (Print): 1848-6339
Original language: English
Keywords: Hardfacing, Metal matrix composite, Gas metal arc welding, Abrasive wear
Electronic versions: 

Research output: Contribution to journalArticleScientificpeer-review

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 effect of climate change on the amount of wind driven rain on concrete facades

Private and public buildings built of concrete make up 34% of the whole building stock in Finland, of which almost 40% is now 30-50 years old. The financial and functional impact on Finnish society of this aged building stock is critical because one third of the country’s population lives in these apartment blocks. There is a rising national concern on increasing maintenance needs of Finnish building stock. It has been concluded that new conceptual approaches to tackle the problem are acutely needed. The main reasons for facade degradation in the Finnish climate are freeze-thaw weathering of concrete and corrosion of reinforcement induced by carbonation of the surrounding concrete. A common denominator in every mechanism is water in varying forms. It can either work as a passage for harmful substances, e.g. chlorides, cause damage by its phase changes (freeze-thaw) or cause dissolution of substances in concrete. Two recent projects conducted by Finnish Meteorological Institute and Tampere University of Technology, have shown that future climate conditions in Finland are likely to get worse in terms of durability of structures exposed to climate. Precipitation during the winter season is going to increase while the form of precipitation is going to be increasingly water and sleet. At the same time, the conditions for drying are going to get worse. Thus, the deterioration rate of structures will accelerate in the most of Finland if maintenance and protection actions are neglected. To simulate the effect of changing climate conditions, it has been studied how the amount of wind-driven rain (WDR) on facades may change in future climate based on a greenhouse gas scenario. The study was conducted by comparing typical Finnish suburban concrete block build in 1970’s in two different locations (coastal area and inland) at current climate and in 2050 and 2100. Based on the study the amount of WDR will increase more in coastal areas than in inland and will be more focused on south and south-west directions. The total increase in WDR will be approx. 15%, while the greatest increase (50%) will be faced by the westward facades in coastal area.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research group: Service Life Engineering of Structures, Tampere University of Technology
Contributors: Pakkala, T., Lemberg, A., Lahdensivu, J.
Number of pages: 13
Pages: 153-165
Publication date: May 2016

Host publication information

Title of host publication: Proceedings of the CIB World Building Congress 2016 : Vol 2 : Environmental opportunities and challenges, Constructing commitment and acknowledging human experiences
Volume: 2
Place of publication: Tampere
Publisher: Tampere University of Technology. Department of Civil Engineering
Editors: Prins, M., Wamelink, H., Giddings, B., Ku, K., Feenstra, M.
ISBN (Print): 978-952-15-3742-4
ASJC Scopus subject areas: Civil and Structural Engineering
Keywords: Climate change, Wind-driven rain, Concrete, Modelling

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

The development curve of knowledge management practices: a ten year perspective from top50 Finnish enterprises

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Information Management and Logistics, Research group: Novi, Department of Information Management and Logistics
Contributors: Helander, N., Väyrynen, H., Zhao, X., Kukko, M.
Publication date: 31 Jan 2015

Host publication information

Title of host publication: 15th Eurasia business and economics society conference : Lisbon, Portugal, January 8-10, 2015
Publisher: Springer
ISBN (Electronic): 978-3-319-27573-4

Bibliographical note

INT=tlo,"Zhao, Xuepin"

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

The Company Democracy Model for the Development of Intellectual Human Capitalism for Shared Value

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: Markopoulos, E., Vanharanta, H.
Number of pages: 8
Pages: 603-610
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

The circular economy of projects

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 Project and Service Business (CROPS)
Contributors: Ahola, T., Martinsuo, M.
Publication date: Jun 2019

Host publication information

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

Publication series

Name: European academy of management annual conference
ISSN (Print): 2466-7498

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

The behaviour of transverse bar reinforcement of slim floor beams in precast floors

Typical slim floor construction consists of precast hollow core slabs supported on shallow steel beams. The steel beams are contained within the depth of the floor slab and the floor beams can be detailed as either composite or bare steel beams. The joints between precast elements are reinforced with transverse steel rebars and are then filled with concrete. The transverse bars are installed through holes in the web of a special perforated steel beam profile. In this research the behaviour of the transverse rebars is studied numerically using Abaqus/Cae FEM-modelling software. The aim of this study is to investigate the effects of the transverse reinforcement on the composite beam behaviour and on the crack formation at the longitudinal interface between steel beam web and concrete. The numerical modelling of the transverse rebars and the local behaviour of rebar within the cracked area is of special interest. The numerical analysis results are compared with and validated by experimental test results carried out with similar floor beam structures. Based on the analysis results, the load paths within the slim floor construction and the effect of transverse reinforcement on floor beam behaviour are discussed.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: University of Oulu
Contributors: Vinberg, M., Malaska, M., Peltonen, S.
Number of pages: 6
Publication date: 2014

Host publication information

Title of host publication: Eurosteel 2014 : 7th European Conference on Steel and Composite Structures, 10.-12.9.2014, Naples, Italy
Place of publication: Belgium
Publisher: ECCS - European Convention for Constructional Steelwork
Editors: Landolfo, R., Mazzolani, F.
Article number: 33-493
ISBN (Electronic): 978-92-9147-121-8

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

Testing the near field/far field model performance for prediction of particulate matter emissions in a paint factory

A Near Field/Far Field (NF/FF) model is a well-accepted tool for precautionary exposure assessment but its capability to estimate particulate matter (PM) concentrations is not well studied. The main concern is related to emission source characterization which is not as well defined for PM emitters compared to e.g. for solvents. One way to characterize PM emission source strength is by using the material dustiness index which is scaled to correspond to industrial use by using modifying factors, such as handling energy factors. In this study we investigate how well the NF/FF model predicts PM concentration levels in a paint factory. PM concentration levels were measured during big bag and small bag powder pouring. Rotating drum dustiness indices were determined for the specific powders used and applied in the NF/FF model to predict mass concentrations. Modeled process specific concentration levels were adjusted to be similar to the measured concentration levels by adjusting the handling energy factor. The handling energy factors were found to vary considerably depending on the material and process even-though they have the same values as modifying factors in the exposure models. This suggests that the PM source characteristics and process-specific handling energies should be studied in more detail to improve the model-based exposure assessment.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Department of Physics, Danmarks Tekniske Universitet, DTU Informatik, Denmark Technical University DTU, National Research Centre for the Working Environment, Department of Micro and Nanotechnology
Contributors: Koivisto, A. J., Jensen, A. C. Ø., Levin, M., Kling, K. I., Maso, M. D., Nielsen, S. H., Jensen, K. A., Koponen, I. K.
Number of pages: 12
Pages: 62-73
Publication date: 1 Jan 2015
Peer-reviewed: Yes

Publication information

Journal: Environmental Sciences: Processes and Impacts
Volume: 17
Issue number: 1
ISSN (Print): 2050-7887
Ratings: 
  • Scopus rating (2015): CiteScore 2.5 SJR 0.998 SNIP 0.923
Original language: English
ASJC Scopus subject areas: Environmental Chemistry, Public Health, Environmental and Occupational Health, Management, Monitoring, Policy and Law, Medicine(all)

Bibliographical note

EXT="Koivisto, A. J."

Source: Scopus
Source ID: 84920000979

Research output: Contribution to journalArticleScientificpeer-review

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

Teräsristikon paarteiden liitoksen vapaan välin leikkausvoiman arviointi

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
Contributors: Tiainen, T., Heinisuo, M.
Number of pages: 6
Pages: 30-35
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the XII Finnish Mechanics Days. Suomen XII Mekaniikkapäivien esitelmät
Publisher: Rakenteiden Mekaniikan Seura ry
ISBN (Print): 978-952-93-5608-9
ISBN (Electronic): 978-952-93-5609-6

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

Terahertz band communications: Applications, research challenges, and standardization activities

Terahertz frequency band, 0.1–10THz, is envisioned as one of the possible resources to be utilized for wireless communications in networks beyond 5G. Communications over this band will be feature a number of attractive properties, including potentially terabit-per-second link capacities, miniature transceivers and, potentially, high energy efficiency. Meanwhile, a number of specific research challenges have to be addressed to convert the theoretical estimations into commercially attractive solutions. Due to the diversity of the challenges, the research on THz communications at its early stages was mostly performed by independent communities from different areas. Therefore, the existing knowledge in the field is substantially fragmented. In this paper, an attempt to address this issue and provide a clear and easy to follow introduction to the THz communications is per- formed. A review on the state-of-the-art in THz communications research is given by identifying the target applications and major open research challenges as well as the recent achievements by industry, academia, and the standardization bodies. The potential of the THz communications is presented by illustrating the basic tradeoffs in typical use cases. Based on the given summary, certain prospective research directions in the field are identified.

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
Contributors: Petrov, V., Pyattaev, A., Moltchanov, D., Koucheryavy, Y.
Number of pages: 8
Pages: 1-8
Publication date: 20 Oct 2016

Host publication information

Title of host publication: 2016 8th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)
Publisher: IEEE
ISBN (Electronic): 978-1-4673-8818-4
ASJC Scopus subject areas: Electrical and Electronic Engineering
Electronic versions: 

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

Teoriaa ja kokemuksia arvioinnista MOOCien aikakaudella

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Department of Information Management and Logistics, Research group: Novi, Tampere University of Applied Sciences
Contributors: Helander, N., Myllylä, M.
Number of pages: 7
Pages: 70-77
Publication date: 11 Jul 2016
Peer-reviewed: Yes

Publication information

Journal: TAMPEREEN AMMATTIKORKEAKOULUN JULKAISUJA. SARJA B, RAPORTTEJA
ISSN (Print): 1456-002X
Original language: Finnish

Research output: Contribution to journalArticleScientificpeer-review

Temporal Ghost Imaging

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Physics, Research area: Optics, Research group: Nonlinear Fiber Optics
Contributors: Ryczkowski, P., Barbier, M., Friberg, A. T., Dudley, J. M., Genty, G.
Publication date: 2015

Host publication information

Title of host publication: Frontiers in Optics 2015
Publisher: OSA
Article number: FTh4D.4
ISBN (Electronic): 978-1-943580-03-3
Source: Bibtex
Source ID: urn:f90eacbc513a12c9e9c76f77e403df8d

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

Temperature Effect on Breakdown Performance of Insulating Polymer Thin Films

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electrical Engineering, Research area: Power engineering
Contributors: Ritamäki, M., Rytöluoto, I., Lahti, K.
Number of pages: 4
Pages: 75-79
Publication date: 2015

Host publication information

Title of host publication: 24th Nordic Insulation Symposium on Materials, Components and Diagnostics, Proceedings
ISBN (Print): 978-82-321-0274-7

Publication series

Name: Proceedings of the Nordic Insulation Symposium
No.: 24
ISSN (Electronic): 2525-3969

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

Temperature distribution of trapezoidal sheeting in fire

Trapezoidal sheeting has been used for stabilizing steel members for a long time. In recent years several documents which include the comprehensive theoretical background and design guidelines for practice have been published. ECCS published the design recommendations including an example of considerable cost savings in steel constructions when sheeting is used for stabilization. However, these documents did not cover the fire limit state. The study presented in this paper is aimed at stabilization of steel members through the trapezoidal sheeting in fire. The papers describes four full-scale fire tests carried out on a horizontal furnace for fire resistance testing. The test specimens were assembled from a fire protected steel beam and trapezoidal sheeting. The profile of the steel beam was a HEA 160 (S355) in two of the tests, and a RHS 150x150x8 (S420) in the remaining tests. Two different profiles of the trapezoidal sheeting were used during the tests. Experimental testing was conducted to determine the temperature fields in trapezoidal sheeting and in the supporting structural steel sections as well as in the connectors with special attention given to the temperatures at the joint above the steel beam section. The results of the tests show that at the failure of the specimens the screw temperatures were between 720°C and 780°C. The screw temperatures were lower than the temperature of trapezoidal sheets but higher than the temperatures of the top flanges of fire protected steel beam. The results of the tests provided experimental data for the critical variables related to building
stabilization in fire through the cladding systems which is under investigation of RFCS project STABFI.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Civil Engineering, Research group: Metal and Light-wight structures, Czech Technical University in Prague
Contributors: Cabova, K., Liskova, N., Arha, T., Malaska, M., Alanen, M., Mela, K., Pajunen, S., Wald, F.
Number of pages: 6
Pages: 665-670
Publication date: 16 Sep 2019

Host publication information

Title of host publication: Proceedings of Nordic Steel 2019 : CE/papers Special Issue
Volume: 3
Publisher: Wilhelm Ernst und Sohn
Article number: 11.04

Publication series

Name: CE/papers
ISSN (Electronic): 2509-7075

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

Technopreneurial Characteristics Rising from the Ashes of Creative Destruction

This paper uses the grounded theory building method to investigate the differences and similarities in the evolutionary paths of three entrepreneurial ventures. Theory-based reasoning was used to select cases representing different technopreneurial business models, namely product, expert service, and integrated product-service business models. Our cases emerged from a disrupted global technology corporation and they represent the economic activity emerging from classical creative destruction. We investigate the evolutionary paths of these ventures from their start-up by employing the resource-based view (RBV) approach to determine the critical change points and watershed events that guide the path of the cases. With these analyses, we are able to differentiate the performance differentials and evolutionary trajectories of the cases. The cases suggest that while the strength of the original path is strong it is possible to change the course despite path dependencies. We outline the mechanisms that facilitated these transitions (e.g., finding a suitable equity fund as a catalyst to make the change). Hence, we find that entrepreneurial ventures are not as path dependent as previous studies suggest; rather, there is managerial discretion to change the evolutionary trajectories. Our study suggests that the capabilities acquired over a long period of time in a global technology corporation contribute to the ability to change the path. We discuss the theoretical and practical implications of the critical decision points during the evolutionary trajectories of ventures.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial and Information Management, Research group: Center for Innovation and Technology Research
Contributors: Sommarberg, M., Mäkinen, S.
Number of pages: 10
Pages: 1-10
Publication date: 1 Oct 2018

Host publication information

Title of host publication: Proceedings in 2018 Portland International Conference in Management and Engineering (PICMET) : (PICMET) 19-23 August 2018
Publisher: IEEE
ISBN (Electronic): 978-1-890843-37-3

Bibliographical note

jufoid=9093

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

Technical suitability of the fine fraction of municipal solid waste incineration bottom ash to the landfill capping liner

To protect the natural aggregates and promote the circular economy the suitable secondary aggregates have been studied intensively in last decades in Finland. One promising secondary aggregate is bottom ash from the municipal solid waste incineration (MSWI) process.
The municipal incinerator bottom ash (MIBA, also called MSWI BA) contains heavy metals and other contaminants limiting its environmental acceptability. The fines contain typically the highest concentrations of contaminants. The portion of inert particles such as rock, glass and mineral waste is higher in coarser fractions.
The aim of the study was to assess the suitability of the fines of MIBA to the mineral liner in landfill capping. Based on the environmental permit, the target permeability value for capping liner is k ≤ 1 · 10-9 m/s. The permeability of the fines of MIBA is typically around 1 · 10-7 m/s when well compacted. In order to achieve the required permeability, bentonite or other additivies are needed. The grains are porous and the pH is high, typically 10-12, which effect on the amount of bentonite required. In addition, the MIBA contain high concentrations of diluting chlorides, sulfides and calcium, which decrease the swelling properties of the bentonite. The swelling capacity of bentonite decreases when permeating aggressive leakages with high cation concentration. Therefore a special polymer treated bentonite were chosen for the tests. The addition of superabsorbent polymers, which have much higher resistance to aggressive leakages, greatly improve the performance and self-healing capacity of bentonite.
First, laboratory tests were performed to estimate the proper amount and quality of the bentonite needed to achieve the permeability required. Two bentonite types were tested, the common natural bentonite and a special polymer modified bentonite produced by Cetco. The swelling index of both types of bentonite were tested by a eluate of MIBA. Several permeability tests were performed to evaluate the effect of dry density, bentonite quality and dose, and portion of coarser grains (2-5 mm).
After laboratory testing, a test area was constructed on an old waste fill to the Ämmässuo. During the construction, it was noticed that the water content effects significantly on the compaction result. The mineral liner was covered by a 1,5 mm thick LLDPE geomembrane and protective geotextile. The liner structure is covered only by a 0,5 m thick drainage layer from crushed rock. No surface layer were constructed.
After one year, the liner was exposed and studied. The quality of the structures, especially the mineral liner were visually evaluated and gas emissions were measured from the surface. The density of the layer was measured by volymeter and troxler and the water content and permeability were measured in laboratory. Based on the visual inspection the surface of the mineral liner was smooth, and the layer homogenious and hardened

General information

Publication status: Published
MoE publication type: A3 Part of a book or another research book
Organisations: Civil Engineering, Research group: Earth Constructions
Contributors: Leppänen, M., Sarkkila, J., Hämäläinen, H., Rinkinen, J.
Pages: 168-175
Publication date: 6 Jun 2018

Host publication information

Title of host publication: Proceedings of the 10th International Conference on the Environmental and Technical Implications of Construction with Alternative Materials WASCON 2018 : No Gradle, No Grave - Circular Economy into Practice
Publisher: RIL - Finnish Association of Civil Engineers
Editors: Raasakka, V., Lahtinen, P.
ISBN (Electronic): 978-951-758-631-3
Keywords: municipal solid waste bottom slag, Landfill cover, bentonite, chemical incompability

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

Teacher’s Perceptions and Readiness to Teach Coding Skills: A Comparative Study Between Finland, Mainland China, Singapore, Taiwan, and South Korea

Many education systems have recognized the importance of computational thinking and coding skills and are implementing curricular changes to introduce coding into formal school education. A necessary and critical success factor involves the preparation of and support for teachers to teach coding. Thus, understanding the perceptions of teachers towards coding is most important, together with knowing the kinds of support they received, and their readiness and challenges to teach. The purpose of the current study is to compare teachers’ attitudes towards the importance of information and communications technologies (ICT) skills and coding skills in Finland, Mainland China, Singapore, Taiwan, and South Korea. The findings indicate that teachers in Finland, Singapore, Taiwan, and South Korea believe that coding is useful even if students will not work in ICT jobs while Mainland Chinese teachers are undecided. Mainland China, Singapore, Taiwan, and South Korea have more positive views towards how to prepare for future-ready learners.

General information

Publication status: E-pub ahead of print
MoE publication type: A1 Journal article-refereed
Organisations: Computing Sciences, National Institute of Education, Satakunta University of Applied Sciences, Chuncheon National University of Education, Taiwan Normal University
Contributors: Wu, L., Looi, C. K., Multisilta, J., How, M. L., Choi, H., Hsu, T. C., Tuomi, P.
Number of pages: 14
Publication date: 30 Sep 2019
Peer-reviewed: Yes

Publication information

Journal: Asia-Pacific Education Researcher
ISSN (Print): 0119-5646
Ratings: 
  • Scopus rating (2019): SJR 0.449 SNIP 1.017
Original language: English
ASJC Scopus subject areas: Education
Keywords: Attitudes, Coding skills, Comparative research, Computational thinking, Primary school, Twenty first century skills

Bibliographical note

EXT="Multisilta, Jari"

Source: Scopus
Source ID: 85074064375

Research output: Contribution to journalArticleScientificpeer-review

Task-setting strategies for hackathon goal achievement in industrial intra-organizational innovation

This paper addresses the hackathon as an innovation contest method in the IT industry, beyond the coding context. Specifically, it focuses on hackathon task-setting strategies, i.e. drawing boundaries to specify the problem to be solved. Although task setting plays an integral part in hackathon goal achievement, i.e. whether the hackathon is perceived as successful or not, task setting has not yet been the focus of hackathon research. Therefore, this paper presents a case study of an IT company with four subsidiaries operating in four countries in the Baltic region, carrying out 17 intra- or intra-inter-organizational hackathons in six iterations. As a result, the paper reveals hackathon task-setting strategies in terms of the employee maturity level regarding the corporate context of the subsidiaries. Presenting conclusions for both academics and industry, the paper contributes to the literature on hackathon task-setting strategies particularly in organizations in the IT sector, with varying maturity levels.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Information and Knowledge Management, Research group: Business Ecosystems, Networks and Innovations, curlabs ab, Häme University of Applied Sciences
Contributors: Suominen, A., Jonsson, V., Bäckman, J., Halvari, S.
Number of pages: 14
Publication date: 19 Jun 2019

Host publication information

Title of host publication: The ISPIM Innovation Conference – Celebrating Innovation: 500 Years Since daVinci : 16-19 June 2019, Florence, Italy
Volume: 93
Place of publication: Florence, Italy
Publisher: International Society for Professional Innovation Management ISPIM
Editor: Bitran, I.
ISBN (Print): 978-952-335-351-0

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

Taskinen yksissä kansissa

General information

Publication status: Published
MoE publication type: D1 Article in a trade journal
Organisations: School of Architecture, Research group: History of Architecture
Contributors: Passinmäki, P.
Number of pages: 2
Pages: 89-90
Publication date: 2015
Peer-reviewed: Unknown

Publication information

Journal: Arkkitehti
Issue number: 2
ISSN (Print): 0783-3660
Original language: Finnish

Research output: Contribution to journalArticleProfessional

Target tracking via combination of particle filter and optimisation techniques

Particle filters (PFs) have been used for the nonlinear estimation for a number of years. However, they suffer from the impoverishment phenomenon. It is brought by resampling which intends to prevent particle degradation, and therefore becomes the inherent weakness of this technique. To solve the problem of sample impoverishment and to improve the performance of the standard particle filter we propose a modification to this method by adding a sampling mechanism inspired by optimisation techniques, namely, the pattern search, particle swarm optimisation, differential evolution and Nelder-Mead algorithms. In the proposed methods, the true state of the target can be better expressed by the optimised particle set and the number of meaningful particles can be grown significantly. The efficiency of the proposed particle filters is supported by a truck-trailer problem. Simulations show that the hybridised particle filter with Nelder-Mead search is better than other optimisation approaches in terms of particle diversity.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Department of Signal Processing, University of Toledo, Bowling Green State University
Contributors: Hosseini, S. S. S., Jamali, M. M., Astola, J., Gorsevski, P. V.
Number of pages: 18
Pages: 212-229
Publication date: 2016
Peer-reviewed: Yes

Publication information

Journal: International Journal of Mathematical Modelling and Numerical Optimization
Volume: 7
Issue number: 2
ISSN (Print): 2040-3607
Ratings: 
  • Scopus rating (2016): CiteScore 1.44 SJR 0.351 SNIP 0.935
Original language: English
ASJC Scopus subject areas: Numerical Analysis, Modelling and Simulation, Applied Mathematics
Keywords: Differential evolution, Nelder-Mead, Particle filter, Particle swarm optimisation, Pattern search, PSO, Target tracking
Source: Scopus
Source ID: 84990239582

Research output: Contribution to journalArticleScientificpeer-review

Tampere University of Technology, laboratory of materials science, paper converting and packaging technology Tampere, Finland

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Materials Science, Research group: Paper Converting and Packaging
Contributors: Kuusipalo, J., Lahti, J.
Number of pages: 1
Publication date: 1 Jan 2017

Host publication information

Title of host publication: 16th TAPPI European PLACE Conference 2017 : Basel; Switzerland; 22 May 2017 through 24 May 2017
Volume: May-2017
Publisher: TAPPI Press
ISBN (Electronic): 9781510850880
ASJC Scopus subject areas: Media Technology, Chemical Engineering(all), Chemistry(all), Mechanical Engineering, Materials Science(all)
Source: Scopus
Source ID: 85044476202

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

Tampereen matemaattisten aineiden aineenopettajakoulutus

We present how the education of subject teachers is organized in mathematics, science and computer science in Tampere. It is based on the idea that both engineering students and students from mathematics and science may choose to become a subject teacher. Students are accepted either to the master’s degree program in Science and Engineering of Tampere University of Technology or the master’s program of Mathematics and Statistics of University of Tampere. Students from different universities are giving opportunities to learn from each other. They study physics and chemistry in Tampere University of Technology and do pedagogical studies in University of Tampere. Both universities have also developed special motivating courses based on the didactical research to their students. In mathematics, there is a joined course for the second or third year students motivating towards teaching carrier. In both universities there are possibilities to do the master or bachelor thesis in didactics of mathematics or science. Both universities have an important role in education of subject teachers in Finland. Tampere University of Technology is providing opportunities during studies to cooperate between schools and industry. It gives ideas how science and mathematics are applied in the modern society. University of Tampere also trains primary school teachers with specialization in mathematics.

General information

Publication status: Published
MoE publication type: D1 Article in a trade journal
Organisations: Department of Mathematics, Research group: MAT Clifford analysis, Department of Chemistry and Bioengineering, Research group: Supramolecular photochemistry
Contributors: Eriksson, S., Haukkanen, P., Hukka, T. I., Lemmetyinen, H.
Number of pages: 8
Pages: 800-807
Publication date: 11 Mar 2015
Peer-reviewed: Unknown

Publication information

Journal:  LUMAT: International Journal on Math, Science and Technology Education
Volume: 3
Issue number:  6
ISSN (Print): 2323-7112
Original language: Finnish

Bibliographical note

ORG=mat,0.7
ORG=keb,0.3

Research output: Contribution to journalArticleProfessional

Tampereelta valmistuneiden vesihuoltoalan diplomi-insinöörien sijoittuminen ja odotukset yliopisto-opetukselle

General information

Publication status: Published
MoE publication type: D1 Article in a trade journal
Organisations: Department of Chemistry and Bioengineering, Department of Civil Engineering, Tampere University of Technology, University of Tampere
Contributors: Katko, T. S., Lukka, A., Rajala, R.
Number of pages: 3
Pages: 45-47
Publication date: 2015
Peer-reviewed: Unknown

Publication information

Journal: Vesitalous
Issue number: 2
ISSN (Print): 0505-3838
Original language: Finnish

Bibliographical note

ORG=keb,1
ORG=rak,0
AUX=orc,"Lukka, Anna"

Research output: Contribution to journalArticleProfessional

Tammerkoski ja Hämeenkatu Tampereen arkkitehtonisen identiteetin ankkureina

General information

Publication status: Published
MoE publication type: D2 Article in professional manuals or guides or professional information systems or text book material
Organisations: School of Architecture
Contributors: Koponen, O.
Number of pages: 8
Pages: 35-42
Publication date: 2015

Host publication information

Title of host publication: Tampereen tarina : Teollisuuden synnyttämä kaupunki harjujen ja järvien solmukohdassa
Volume: Julkaisuja 5/2015
Place of publication: Kaupunkiympäristön kehittäminen
Publisher: Tampereen kaupunki
Editor: Hautamäki, R.
ISBN (Print): 978-951-609-783-4

Publication series

Name: Tampereen kaupunki/Kaupunkiympäristön kehittäminen
Publisher: Tampereen kaupunki
Volume: 5/2015
ISSN (Print): 1797-321X

Research output: Chapter in Book/Report/Conference proceedingChapterProfessional

Tailoring directional scattering of second-harmonic generation from (111)-GaAs nanoantennas

The group of zincblende III-V compound semiconductors, especially (100)-grown AlGaAs and GaAs, have recently been presented as promising materials for second harmonic generation (SHG) at the nanoscale. However, major obstacles to push the technology towards practical applications are the limited control over directionality of the SH emission and especially zero forward/backward radiation. In this work we provide both theoretically and experimentally a solution to these problems by presenting the first SHG nanoantennas made from (111)-GaAs embedded in a low index material. These nanoantennas show superior forward directionality compared to their (100)-counterparts. Most importantly, it is possible to manipulate the SHG radiation pattern of the nanoantennas by changing the pump polarization without affecting the linear properties and the total nonlinear conversion efficiency.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Research group: Nonlinear Optics, Physics, Australian National University, Friedrich-Schiller-University Jena, School of Engineering and Information Technology, University of New South Wales (UNSW) Australia, Institute of Applied Physics of the Russian Academy of Sciences
Contributors: Sautter, J., Xu, L., Miroshnichenko, A., Lysevych, M., Volkovskaya, I., Smirnova, D., Camacho Morales, M., Zangeneh Kamali, K., Karouta, F., Vora, K., Tan, H. H., Kauranen, M., Staude, I., Jagadish, C., Neshev, D. N., Rahmani, M.
Publication date: 2019

Host publication information

Title of host publication: AOS Australian Conference on Optical Fibre Technology, ACOFT 2019 and Australian Conference on Optics, Lasers, and Spectroscopy, ACOLS 2019
Publisher: SPIE
Editors: Mitchell, A., Rubinsztein-Dunlop, H.
Article number: 112000H
ISBN (Electronic): 9781510631403

Publication series

Name: Proceedings of SPIE - The International Society for Optical Engineering
Volume: 11200
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: Dielectric nanoantennas, Directional emission, Multipolar interference, Second harmonic generation

Bibliographical note

jufoid=71479

Source: Scopus
Source ID: 85079653740

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

Tag suggestions from social media profiles

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Pori Department, Research group: Software Engineering and Intelligent Systems
Contributors: Rantanen, P., Sillberg, P., Soini, J., Jaakkola, H.
Number of pages: 8
Pages: 387-394
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the 26th International Conference on Information Modelling and Knowledge Bases - EJC 2016. : June 6-10, 2016, Tampere, Finland.
Volume: 18
Place of publication: Tampere
Publisher: Tampere University of Technology
Editors: Jaakkola, H., Thalheim, B., Kiyoki, Y., Yoshida, N.
ISBN (Electronic): 978-952-15-3747-9

Publication series

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

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

Systemic Sustainability and Emerging Diversity of Shopping Concepts in Urban Multi-Agent Networks

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Institute of Society and Space (SOCIS), School of Architecture, Research group: EDGE
Contributors: Rantanen, A., Iltanen, S., Joutsiniemi, A.
Pages: 510-517
Publication date: 2014

Host publication information

Title of host publication: New Urban Configurations
Publisher: Delft University Press
Editors: Cavallo, R., Komossa, S., Marzot, N., Berghauser Pont, M., Kuijper, J.
ISBN (Print): 978-1-61499-365-0
ISBN (Electronic): 978-1-61499-366-7

Bibliographical note

Contribution: organisation=ark,FACT1=1<br/>Portfolio EDEND: 2015-03-20

Source: researchoutputwizard
Source ID: 1352

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

Systematic Search and Ranking of Physical Contradictions Using Graph Theory Principles: Toward a Systematic Analysis of Design Strategies and their Impacts: TRIZ and Knowledge-Based Innovation in Science and Industry

Abstract This paper presents three interconnected developments made during the course of a recent collective research work, the development of a systematic graph-based search tool for physical contradictions, a ranking approach for defining the order of criticality of the design contradictions and the associated analysis of the different design strategies that can be used to solve those contradictions or to enhance performance indicators. The systematic graph-based search for physical contradictions is using the set of elementary variables necessary to describe the system as basic input. The initial set is extracted based on taxonomy of variables combining classification work from NIST and classification of variables derived from the Bond Graph theory. The contradiction search method is in a second step classifying the set of variables into three categories: the constraint variables imposed to the designers by the context and the environment, the design variables on which the designer as the possibility to act and the performance variables that are used to evaluate the performance of the designed system. In a third step, interactions between variables are searched using two possibilities: a causal ordering algorithm developed during the course of the research or via a collective work of experts. The result of this step is a directed graph starting from the constraints variables and ending with the performance variables. In the fourth step objectives have to be assigned to the performance variables (minimal value, maximal value or target value). Those objectives are propagated back into the graph by analyzing the impact of the variables interacting with the performance variables. A physical contradiction is detected each time it is discovered that a design variable is associated with two contradictory objectives. Following this approach, a contradiction is represented as a node in the directed graph. It is possible to systematically map the different design strategies that can be used and to rank the possible impact of those design strategies. The article presents a concrete application of the approach on the case study of an air bearing and demonstrates the novelty of the approach to generate new viewpoints and insight in the analysis of the early stages of the development process. The potential impact of such type of design support is potentially very important. A future step will consists of developing a computer aided tool implementing the method.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Department of Mechanical Engineering and Industrial Systems, Aalto University, Aalto Univ, Aalto University, Aalto Univ Finland, Dept Engn Design & Prod, Sch Engn
Contributors: Coatanéa, E., Ryynänen, L., Calonius, O., Mokammel, F., Riitahuhta, A.
Number of pages: 18
Pages: 1165-1182
Publication date: 2015
Peer-reviewed: Yes

Publication information

Journal: Procedia Engineering
Volume: 131
ISSN (Print): 1877-7058
Ratings: 
  • Scopus rating (2015): CiteScore 0.56 SJR 0.239 SNIP 0.566
Original language: English
Keywords: graph theory, TRIZ, physical contradiction, innovative principles, air bearing

Bibliographical note

EXT="Coatanéa, Eric"
EXT="Riitahuhta, Asko"

Source: RIS
Source ID: urn:4AB62BAC3A0A0D77B9BD9FDFF1D977D4

Research output: Contribution to journalArticleScientificpeer-review

Systematic Literature Review on Enterprise Architecture in the Public Sector

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: Dang, D., Pekkola, S.
Publication date: 2015

Host publication information

Title of host publication: The 38th Information Systems Research Conference in Scandinavia (IRIS38)
Editors: Öörni, A., Iivari, N., Kuutti, K., Oinas-Kukkonen, H., Rajanen, M.
ISBN (Electronic): 978-952-62-0917-3

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

Systematic literature review on customer emotions in social media

Customers are human beings who express their emotions openly on social media platforms. There is a wealth of social media data that companies can make use of to improve their business decision making and tailor their marketing strategies. In order to benefit from this, organizations need to apply computational methods, which can save time and effort rather than applying traditional consumer research approaches, such as surveys or interviews. The purpose of this study is to investigate existing computational studies on detecting consumer emotions from social media data. We conducted a systematic literature review on articles published in ScienceDirect, IEEE Explore, ACM Digital Library, and Emerald Insight from the period 2009-2017. The aim was to discover how social media data was extracted, how large datasets were used in detecting emotions, the type of computational methods used, and the accuracy of the results obtained from the existing studies. Most of the studies were focused on sentiment analysis and different machine learning algorithms. The computational methods were applied in business decision making and marketing functions. Practical scenarios included emotion detection in customer reviews and sentiment analysis of retail brands. Based on these studies, we have uncovered situations where the results of the analysis are either sufficiently accurate or supportive for decision making. We provide recommendations for organizations and managers on developing their resources to make use of different computational methods for emotion and sentiment detection. Finally, we present the limitations of these methods and provide recommendations for aligning future research studies toward big social data analytics on customer emotions.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial and Information Management, Research group: Business Ecosystems, Networks and Innovations, Tampere University of Technology, University of Örebro Business School, University of Jyväskylä
Contributors: Madhala, P., Jussila, J., Aramo-Immonen, H., Suominen, A.
Number of pages: 10
Publication date: 21 Jun 2018

Host publication information

Title of host publication: ECSM - Proceedings of the 5th European Conference on Social Media
Place of publication: Limerick, Ireland
Editors: Cunnane, V., Corcoran, N.
ISBN (Print):  978-1-911218-83-8
ISBN (Electronic): 978-1-911218-84-5
Keywords: social media, big data, emotions, consumer behaviour, sentiment analysis
Electronic versions: 

Bibliographical note

INT=ttj,"Madhala, Prashanth"

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

Systematic approach to secure automation – coordinated voltage control use-case

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, Research area: Dynamic Systems, Department of Electrical Engineering, Research area: Power engineering
Contributors: Salmenperä, M., Seppälä, J., Koivisto, H., Lu, S., Repo, S.
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

Bibliographical note

ORG=ase,0.8
ORG=dee,0.2

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

Switchable unidirectional second-harmonic emission through GaAs nanoantennas

Switching the scattering direction of high-index dielectric nanoantennas between forward and backward, via Mie resonances in the linear regime, has been widely studied, recently. However, switching the harmonic emission of nanoantennas without applying any physical change to the antennas, such as geometry, or environment, is a chal-lenging task that has not been demonstrated yet. Here, we investigate multipolar second-harmonic switch from GaAs nanoantennas. Based on the peculiar nonlinearities of zinc-blende semiconductors, we demonstrate both theoretically and experimentally unidirectional nonlinear emission routing and switching via pump polarization control. Our results offer exciting opportunities for nonlinear nanophotonics technologies, such as nanoscale light routing elements, nonlinear light sources, nonlinear imaging, multifunctional flat optical elements.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Research group: Nonlinear Optics, Physics, School of Engineering and Information Technology, University of New South Wales (UNSW) Australia, HCI e 486.1, Australian National University, Institute of Applied Physics of the Russian Academy of Sciences
Contributors: Xu, L., Saerens, G., Timofeeva, M., Miroshnichenko, A. E., Camacho-Morales, R., Volkovskaya, I., Smirnova, D. A., Lysevych, M., Huang, L., Cai, M., Karouta, F., Hoe Tan, H., Kauranen, M., Jagadish, C., Grange, R., Neshev, D. N., Rahmani, M.
Publication date: 2019

Host publication information

Title of host publication: AOS Australian Conference on Optical Fibre Technology, ACOFT 2019 and Australian Conference on Optics, Lasers, and Spectroscopy, ACOLS 2019
Publisher: SPIE
Editors: Mitchell, A., Rubinsztein-Dunlop, H.
Article number: 112000J
ISBN (Electronic): 9781510631403

Publication series

Name: Proceedings of SPIE - The International Society for Optical Engineering
Volume: 11200
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: Dielectric nanoresonators, Mie resonance, Second harmonic generation, Unidirectional emission

Bibliographical note

jufoid=71479

Source: Scopus
Source ID: 85079683447

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

Suuren lämmöneristämättömän maanvastaisen alapohjan vaikutus rakennuksen energiankulutukseen

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Civil Engineering, Research group: Building Physics, Tampere University of Technology, Laboratory of Civil Engineering
Contributors: Huttunen, P., Rantala, J., Vinha, J.
Number of pages: 8
Pages: 335-342
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: 1
Place of publication: Tampere
Publisher: Tampereen teknillinen yliopisto, Rakennustekniikka, Rakennusfysiikka
Editors: Vinha, J., Kivioja, H.
ISBN (Print): 978-952-15-4022-6

Publication series

Name: Tampereen teknillinen yliopisto. Rakennustekniikka. Rakennusfysiikka.
Publisher: Tampereen teknillinen yliopisto

Bibliographical note

INT=rak,"Rantala, Juha"

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

Suunnittelutyökalu putkiristikoiden mitoitukseen ja optimointiin

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, SUBNIC Oy, Ruukki Construction Oy
Contributors: Mela, K., Alinikula, M., Tiainen, T., Heinisuo, M., Sorsa, I.
Number of pages: 6
Pages: 136-141
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the XII Finnish Mechanics Days. Suomen XII Mekaniikkapäivien esitelmät
Publisher: Rakenteiden Mekaniikan Seura ry
ISBN (Print): 978-952-93-5608-9
ISBN (Electronic): 978-952-93-5609-6

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

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

Sustainable and responsible freight transport through public-private collaboration: Finnish road freight responsibility model

Purpose
In aviation, maritime and rail transport safety management systems are well adapted and
they are fixed part of daily practices and the minimum requirements for systems are set in
European regulations. However, this does not apply a road freight sector. In 2013, Finnish
Transport Safety Agency (Trafi) started to develop a road freight responsibility model,
which was intended to enhance safety, quality and environmental management in the
Finnish road freight transport sector. The aim of this paper is to introduce the Finnish
model and to summarize the main findings from the responsibility model.
Approach
This paper includes data and knowledge from two separate but related projects which
studied responsibility and sustainability in the Finnish road freight sector. The paper
combines information from several methods, but the main research method was a case
study with transport companies. Complementary methods used in this paper are workshop
and online survey.
Findings
Transport companies have different practises and attitudes related to the responsible
business and the size of the company or the main service sector of the company do not
always explain the differences. According to the results, this kind of new voluntary basis
approach has a demand in the road freight sector and it will provide help for transport
companies to develop their business.
Value
The paper represents a new approach of the national transport agency to develop the road
freight sector. With the responsibility model Trafi aims to promote sustainable and
responsible business of all sizes of transport companies with a voluntary basis approach.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Information Management and Logistics
Contributors: Nykänen, L., Rantala, J., Liimatainen, H.
Number of pages: 15
Pages: 238-252
Publication date: 2015

Host publication information

Title of host publication: NOFOMA 2015 : Post Conference Proceedings, Molde, 3-5 June 2015, Nordic Logistics Research Network
Publisher: Nordic Logistics Research Network Publisher
ISBN (Electronic): 978-82-7962-207-9
ASJC Scopus subject areas: Engineering(all)
Keywords: Heavy road freight, sustainability, transport management, transport agency, Finland, Safety, quality, environment, responsibility

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

Surrogate modeling for initial rotational stiffness of welded tubular joints

Recently, buildings and structures erected in Russia and abroad have to comply with stringent economic requirements. Buildings should not only be reliable and safe, have a beautiful architectural design, but also meet the criteria of rationality and energy efficiency. In practice, this usually means the need for additional comparative analysis in order to determine the optimal solution to the engineering task. Usually such an analysis is time-consuming and requires huge computational efforts. In this regard, surrogate modeling can be an effective tool for solving such problems. This article provides a brief description of surrogate models and the basic techniques of their construction, describes the construction process of a surrogate model to calculate initial rotational stiffness of welded RHS joints made of high strength steel (HSS).

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Department of Civil Engineering, Research group: Metal and Light-wight structures, Peter the Great St. Petersburg Polytechnic University, Peter Great St Petersburg Polytech Univ
Contributors: Garifullin, M. R., Barabash, A. V., Naumova, E. A., Zhuvak, O. V., Jokinen, T., Heinisuo, M.
Number of pages: 24
Pages: 53-76
Publication date: 2016
Peer-reviewed: Yes

Publication information

Journal: Magazine of Civil Engineering
Volume: 63
Issue number: 3
ISSN (Print): 2071-4726
Ratings: 
  • Scopus rating (2016): CiteScore 0.3 SJR 0.236 SNIP 0.772
Original language: English
ASJC Scopus subject areas: Civil and Structural Engineering
Keywords: Finite element analysis, Kriging, Plane bending, Square hollow section, Surrogate modeling

Bibliographical note

EXT="Garifullin, M. R."

Source: Scopus
Source ID: 84994045052

Research output: Contribution to journalArticleScientificpeer-review

Surrogate model for rotational stiffness of welded tubular Y‐joints

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, Poznan University of Technology, Peter Great St Petersburg Polytech Univ
Contributors: Heinisuo, M., Mela, K., Tiainen, T., Jokinen, T., Baczkiewicz, J., Garifullin, M.
Number of pages: 22
Pages: 18-39
Publication date: 2015

Host publication information

Title of host publication: METNET Tenth International Seminar in Budapest 13.-14.10.2015
ISBN (Print): 978-951-784-762-9
ISBN (Electronic): 978-951-784-763-6

Publication series

Name: HAMKin julkaisuja
No.: 15
ISSN (Print): 1795-4231
ISSN (Electronic): 1795-424X

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

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

Suomen vesihuollon kehitys ja opit kansainvälisessä kontekstissa

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Civil Engineering
Contributors: Katko, T. S.
Number of pages: 4
Pages: 8-11
Publication date: 2017
Peer-reviewed: Yes

Publication information

Journal: Vesitalous
Volume: 58
Issue number: 1
ISSN (Print): 0505-3838
Original language: Finnish

Research output: Contribution to journalArticleScientificpeer-review

Suomen keraaminen seura - Keramiska sällskapet i Finland

An Article about the history and present state of the Finnish ceramic society

General information

Publication status: Published
MoE publication type: D1 Article in a trade journal
Organisations: Department of Materials Science, Research group: Ceramic materials
Contributors: Frankberg, E. J.
Number of pages: 1
Pages: 58-58
Publication date: Oct 2015
Peer-reviewed: Unknown

Publication information

Journal: Materia
Volume: 5
ISSN (Print): 1459-9694
Original language: Finnish
Keywords: Ceramic, society, Finland

Research output: Contribution to journalArticleProfessional

Sub-parts-per-trillion sensitivity in trace gas detection by cantilever-enhanced photo-acoustic spectroscopy

We report a simple cantilever-enhanced photoacoustic detector, which reaches exceptionally good sensitivity in trace gas detection of hydrogen fluoride by using a highly stable narrow-linewidth optical parametric oscillator at 2.476 μm.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Photonics, University of Helsinki, Gasera Ltd.
Contributors: Tomberg, T., Vainio, M., Hieta, T., Halonen, L.
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: 85049146097

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

Sub-100 fs pulse generation from a Tm,Ho: CALYO laser mode-locked by a GaSb-based SESAM at ~2043 nm

We report on the first sub-100-fs mode-locked Ho3+-laser in the 2-μm spectral range. The disordered co-doped Tm,Ho:CaYAlO4 (Tm,Ho:CALYO) crystal produced pulses as short as 87 fs with 27-mW average output power at 80.45-MHz repetition rate.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Photonics, Max Born Institute, Jiangsu Normal University, Universitat Rovira i Virgili, China Academy of Engineering Physics, ITMO University, Tongji University
Contributors: Zhao, Y., Wang, Y., Zhang, X., Mateos, X., Pan, Z., Loiko, P., Zhou, W., Xu, X., Xu, J., Shen, D., Suomalainen, S., Härkönen, A., Guina, M., Griebner, U., Petrov, V.
Publication date: 1 Jan 2018

Host publication information

Title of host publication: CLEO : Science and Innovations, CLEO_SI 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: 85048984709

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

Study on the capability to measure stakeholders’ brand experiences with a consumer-centric measurement framework

The target of this paper is to introduce a general brand experience measurement scale that can be used to measure brand experiences of the stakeholders of a company. It is proposed that also stakeholders’ brand experiences can be measured with a measurement scale developed for consumer marketing research.

In literature, there are various different kinds of individual brand constructs andmeasurement frameworks that have been developed for tracking consumers’ brand perceptions; however, these models have not been frequently used to measure brand-related aspects outside consumer-centric situations. The tracking of stakeholders’ brand experiences can help companies to position their brands better in the tightening global competition where also stakeholders have a critical role and can influence the performance of the company (Hult, Mena, Ferrell, & Ferrell, 2011).

Brands are experienced via stimuli that can be either controlled by the company,including, for example, advertisements, logos, sales environments, sales packages, and services, or then they are out of their control, for example, brand related information can spread freely on the social media or by word-of-mouth (Brakus, Schmitt, & Zarantonello, 2009; Keller, 2013). Thus, it can be said that the measurement of brand experiences can give valuable information to the company on what is the status and reputation of the brand. However, it is not only the customers or consumers that have brand experiences, also stakeholders encounter brands and the way they experience them on the personal level can have a major impact on how they interact and promote the brand in other contexts. Some B2B marketing theories have brought up the importance of understanding long-term relationships between buyers and sellers, including experiences associated with the relationship (Hadjikhani & LaPlaca, 2013) as well as purchase risks (Brown, Zablah, Bellenger, & Johnston, 2011).

Brand experiences can be measured, for example, with a measurement scale (Brakus et al., 2009) that has been extended with an eco-friendliness dimension (Saari, 2016). This model has been tested with consumers, and this paper argues that the same scale can be useful for monitoring the brand experiences of other stakeholders as well. The extended brand experience scale can be used to monitor whether consumers and stakeholders experience a certain brand to be ecofriendly, and how positively or negatively they are inclined towards the eco-friendliness of the brand experiences.

With the raising focus on stakeholders’ important role in solving environmentalproblems, the role of stakeholder marketing becomes more critical for a company (Homburg, Stierl, & Bornemann, 2013). And in this situation it becomes also more crucial to follow up what are the brand experiences of stakeholders. The stakeholders’ brand experiences can give a strong indication is the company implementing its strategy correctly and are all the essential elements transparently and authentically communicated to the stakeholders, especially with regard to the environmental development activities that are reflected in the eco-friendliness dimension of brand experiences.Keywords: brand experience; brand measurement scales; stakeholders’ brandexperiences; stakeholder marketing

References:

Brakus, J. J., Schmitt, B. H., & Zarantonello, L. (2009). Brand Experience: What Is It? How Is It Measured? Does It Affect Loyalty? Journal of Marketing, 73(3), 52-68.

Brown, B., Zablah, A., Bellenger, D., & Johnston, W. (2011). When do B2B brands influence the decision making of organizational buyers? An examination of therelationship between purchase risk and brand sensitivity. International Journal ofResearch in Marketing, 28 (3), 194-204.

Hadjikhani, A., & LaPlaca, P. (2013). Development of B2B marketing theory.Industrial Marketing Management, 42(3), 294-305.

Homburg, C., Stierl, M., & Bornemann, T. (2013). Corporate Social Responsibility in Business-to-Business Markets: How Organizational Customers Account for Supplier Corporate Social Responsibility Engagement. Journal of Marketing,77(6), 54-72.

Hult, G. T. M., Mena, J. A., Ferrell, O. C., & Ferrell, L. (2011). Stakeholdermarketing: a definition and conceptual framework. AMS Rev, 1, 44–65.

Keller, K. L. (2013). Strategic Brand Management. Building, Measuring, andManaging Brand Equity. (4 ed.). Essex, England: Pearson Education Limited.

Saari, U. (2016). Eco-Friendliness in the Brand Experience of High-Tech Products. Tampere University of Technology, Tampere, Finland.

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: Saari, U., Mäkinen, S.
Number of pages: 2
Pages: 1034-1035
Publication date: 20 Jul 2016

Host publication information

Title of host publication: Global Marketing Conference Proceedings 2016 Hong Kong, July 21 - 24 : Track: Stakeholders-brand Relationships

Publication series

Name: Proceedings of the Global Marketing Conference
ISSN (Print): 1976-8699
Keywords: brand experience, brand experience measurement, brand measurement scale, stakeholders’ brand experiences, stakeholder marketing

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

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

Students’ Use of Learning Tools and Tool Types: Solving Self-Study Assignments on an Online Platform

ince 2002, a test titled Mathematics Basic Skills Test (BST) has been organized annually at Tampere University of Technology.In order to pass the Basic Skills Test, a student should be able to complete a set amount out of the 16 assignments within 45 minutes (in fall of 2015, the passing limit was 6 for engineering students, 8 for science and mathematics students). Students who failed the test were directed to the Remedial Instruction (RI). The Remedial Instruction is a set of 71 high school mathematics problems designed to brush up the skills of engineering students.

TUT students have, since 2006, been divided into different learner profile groups. This paper is the summary of studies on the behaviour of these different learner profile groups in the Remedial Instruction regarding their use of time and learning tools when solving their assignments.

Different types of learners indicate that their self-study habits on an online platform are very different. Students that are surface oriented in their studies use a lot of different learning tools, but do not produce good examination results. Skillful students seem to do well even without using a lot of tools. Thus, the current way at TUT, where students work on their remedial mathematics problems on their own could be developed further. Some change is needed, and one suggestion is using testing to ensure that the remedial training has had the desired effect.

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, Research group: MAT Positioning
Contributors: Myllykoski, T., Pohjolainen, S., Ali-Löytty, S.
Publication date: 16 Sep 2016

Host publication information

Title of host publication: SEFI 2016 Annual Conference Proceedings : Engineering Education on Top of the World: Industry University Cooperation
Publisher: European Society for Engineering Education SEFI
ISBN (Electronic): 9782873520144

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

Students as mystery shoppers: lowering knowledge sharing barriers in higher education

This empirical research paper focuses on discussing potential knowledge sharing barriers volunteering students as mystery shoppers perceived in the context of higher education. More specifically, the focus is on students’ ideas on finding solutions to lowering individual knowledge sharing barriers, i.e. improving the quality of their instruction.
Mystery shopping is a method of observing service performance from the user, or customer, perspective and it has been widely used to evaluate the overall service quality within service businesses. Using empirical data from students volunteering as mystery shoppers appears not as a widely used research and development tool.
Moreover, there is little context-specific research on learning and teaching in such a knowledge intensive community like a university from the perspective of knowledge management (KM). KM offers thus a useful approach for analysing learning and teaching, as well as improving the processes of knowledge creation.
A Finnish technical university and its student union organised a mystery shopping project with 45 student participants. They observed their learning experiences for six weeks in order to complement data from other sources. The students kept a casual theme-based diary on four larger topics: teaching staff and teaching (including pedagogical competence and teaching culture, instruction and guidance, course arrangements), students and the learning culture, student services and learning environment. The initial goal of the project was to add a student voice on the processes of developing learning and teaching in higher education.
The research approach represents qualitative content analysis in which knowledge-sharing barriers were first recognised from the qualitative mystery shopper data. Next those instances where the students offered their solution to lowering that barrier were selected for further analysis. The results identify learner suggestions that may contribute to lowering knowledge sharing barriers. Result also indicate that individual knowledge sharing barriers as described in the literature appear to be valid in a higher education setting.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Language Centre
Contributors: Tukiainen, M. O.
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 (Electronic): 978-2-87352-012-0

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

Strength increase below an old test embankment in Finland

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research group: Foundation Structures
Contributors: D'Ignazio, M., Länsivaara, T.
Pages: 357-366
Publication date: May 2016

Host publication information

Title of host publication: The 17th Nordic Geotechnical Meeting : Conference proceedings
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

Strengthening student engagement by integrating the contents of a flipped course around a well-confined real life theme

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
Contributors: Kangas, J., Lunden, O.
Number of pages: 9
Publication date: Sep 2016

Host publication information

Title of host publication: SEFI 2016 Annual Conference Proceedings : Engineering Education on Top of the Wolrd: Industry University Cooperation
ISBN (Print): 9782873520144

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

Strategic planning and epistemology of change: Probing the fitness of urban and planning systems with resilient spatial strategies

The aim of this paper is to question the fitness of our state-of-the-art urban planning and urban systems to adapt to continuous changes and disturbances in operating environment. We argue that in an attempt to help cities adapt to uncertain futures, strategic planning should be better informed by the epistemology of complex adaptive systems and better recognise recursive emergent processes between urban metabolism and morphology.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: School of Architecture, Research group: EDGE
Contributors: Rantanen, A., Joutsiniemi, A.
Number of pages: 12
Pages: 336-347
Publication date: 2015

Host publication information

Title of host publication: Sustainable Futures in a Changing Climate : Proceedings of the Conference “Sustainable Futures in a Changing Climate”, 11−12 June 2014, Helsinki, Finland
Volume: 2/2015
Place of publication: Turku
Publisher: Finland Futures Research Centre, University of Turku
Editors: Hatakka, A., Vehmas, J.
ISBN (Print): 978-952-249-303-3

Publication series

Name: FFRC eBOOK 2/2015
Publisher: Finland Futures Research Centre, University of Turku
ISSN (Electronic): 1797-1322

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

Stirring the Construction Project Management with Co-creation and Continuous Improvement

Abstract Gathering information that is capable to explain customers’ needs is usually seen as a quite straightforward part of the traditional construction process: a customer should be able to tell all relevant needs in the first stage so that a building could be designed and built according to the gained information. But the process is lacking of service abilities if a customer wants to modify the given information due to a change in circumstances, albeit such a change is easily caused due turbulent economic situations and long spans in real-estate development projects. Hence the customer perspective regarding the construction management (CM) process should be accommodated better. In this paper, the case studies of the four premises improvement projects are reported upon, where the CM process was altered to include and apply the concepts of continuous improvement and co-creation. The process documentation covered the impacts of the case project on the usability of the premises, the indoor climate conditions (carbon dioxide and temperature) metering, the time lapse cameras and the on-line user feedback system. The documentation consists of the minutes of the meetings, the financial reporting and the time tables.Both the processes and the results of the projects are analysed. Based on the key findings, some suggestions are put forth upon how to improve the CM process to better serve customer interests and quality improvement in the future.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Department of Civil Engineering, Research group: Digitalization in the real estate and construction sector, School of Architecture
Contributors: Savolainen, J., Kähkönen, K., Niemi, O., Poutanen, J., Varis, E.
Number of pages: 8
Pages: 64-71
Publication date: 2015
Peer-reviewed: Yes

Publication information

Journal: Procedia Economics and Finance
Volume: 21
ISSN (Print): 2212-5671
Original language: English
Keywords: Co-creation, construction management, continuous improvement, customer relations management, quality management

Bibliographical note

ORG=rak,1
ORG=ark,0

Source: RIS
Source ID: urn:76EF98A938A43DE456AFD5111BF4116C

Research output: Contribution to journalArticleScientificpeer-review

Standardizing the service delivery system for repetitive industrial services

Manufacturers need to develop efficient service deliveries that can be used for multiple customers with different equipment. The service delivery system can support service repetitiveness through standardization. The objective is to increase understanding on features and requirements of standardization in the service delivery system and identify means for effi-cient service delivery in triadic settings. The qualitative multiple-case study with three manufacturing firms reveals different relevant factors for stand-ardization for reactive and proactive services and highlights certain prac-tices in triadic customer participation. Equipment and remote technologies both challenge and enable standardization and require new competences.

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services, Tampere University of Technology
Contributors: Poikonen, E., Martinsuo, M., Nenonen, S.
Number of pages: 20
Publication date: Sep 2015

Host publication information

Title of host publication: RESER 2015 : 25th Annual RESER Conference
Publisher: RESER European Association for Research on Services
ISBN (Electronic): 978-87-7349-921-4
Keywords: service delivery, industrial services

Bibliographical note

AUX=tta,"Poikonen, Elina"

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

STACK assignments in university mathematics education

Students' learning process can be assisted and diversified with the help of e-learning tools and virtual environments. In Tampere University of Technology, the aim is to utilize software that delivers assignments, checks students' answers and gives feedback to the students, in the mathematics courses. The software that has been used is called STACK, which can be integrated into Moodle. STACK assignments have been created as a part of the STEM education material bank Abacus.

Written feedback can be generated in STACK assignments as necessary. Feedback guides the students to identify their errors and revise them. It can also motivate the students to try again after giving a wrong answer.

This study concerns the use of STACK in TUT mathematics courses. Especially we are interested in
- how do the points gathered and the time of the last submission in STACK exercises correlate with the exam grades?
- when and for how long do the students solve the STACK assignments?
- how does the activity in STACK differ between honours and engineering mathematics students?

In STACK assignments, the students were able to give their answers in Moodle. For each lecture week, they had one week to solve and return the answers. All the student activity related to the STACK assignments was saved in the Moodle logs. Data was analysed with Matlab by the means of educational data mining.

We observed that the activity in STACK was the greatest near the deadline. We also found that, on average, the better the grade, the earlier the students gave their final answers in STACK. Additionally, the honours mathematics students made their submissions earlier: many of them considered STACK exercises as a good way to revise the subjects considered in the lectures, while engineering mathematics students mostly rehearsed with STACK near the deadline.

According to the survey polls, students found the STACK exercises as a nice and efficient way to rehearse and learn mathematics. Especially, the instant feedback was mostly appreciated. However, some of the students felt writing the answers with a computer unappealing, but generally this aspect was not considered a problem.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Mathematics, Research group: MAT Positioning
Contributors: Mäkelä, A., Ali-Löytty, S., Humaloja, J., Joutsenlahti, J., Kauhanen, J., Kaarakka, T.
Number of pages: 14
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the 44th SEFI Conference, 12 - 15 September 2016, Tampere, Finland
Publisher: European Society for Engineering Education SEFI
ISBN (Print): 9782873520144

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

Spatial borders and affordances of a temporary school building – Enhancing the school engagement and learning experience

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering
Contributors: Airo, K., Vaara, L., Nenonen, S.
Pages: 715-725
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the CIB World Building Congress 2016: Volume II - Environmental Opportunies and Challenges. Constructing Commitment and Acknowledging Human Experiences
Publisher: Tampere University of Technology. Department of Civil Engineering
ISBN (Electronic): 978-952-15-3742-4

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

Sound Events and Emotions: Investigating the Relation of Rhythmic Characteristics and Arousal

A variety of recent researches in Audio Emotion Recognition (AER) outlines high performance and retrieval accuracy results. However, in most works music is considered as the original sound content that conveys the identified emotions. One of the music characteristics that is found to represent a fundamental means for conveying emotions are the rhythm- related acoustic cues. Although music is an important aspect of everyday life, there are numerous non-linguistic and non- musical sounds surrounding humans, generally defined as sound events (SEs). Despite this enormous impact of SEs to humans, a scarcity of investigations regarding AER from SEs is observed. There are only a few recent investigations concerned with SEs and AER, presenting a semantic connection between the former and the listener’s triggered emotion. In this work we analytically investigate the connection of rhythm-related characteristics of a wide range of common SEs with the arousal of the listener using sound events with semantic content. To this aim, several feature evaluation and classification tasks are conducted using different ranking and classification algorithms. High accuracy results are obtained, demonstrating a significant relation of SEs rhythmic characteristics to the elicited arousal.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Ionian University, Aristotle University of Thessaloniki
Contributors: Drossos, K., Kotsakis, R., Kalliris, G., Floros, A.
Number of pages: 6
Pages: 1-6
Publication date: Jul 2013

Host publication information

Title of host publication:  Information, Intelligence, Systems and Applications (IISA), 2013 Fourth International Conference on
Publisher: IEEE
ISBN (Electronic): 978-1-4799-0771-7
Keywords: audio emotion recognition, Sound events, arousal, rhythm related features, audio emotion classification

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

Sound Event Detection in Multichannel Audio Using Spatial and Harmonic Features

In this paper, we propose the use of spatial and harmonic features in combination with long short term memory (LSTM) recurrent neural network (RNN) for automatic sound event detection (SED) task. Real life sound recordings typically have many overlapping sound events, making it hard to recognize with just mono channel audio. Human listeners have been successfully recognizing the mixture of overlapping sound events using pitch cues and exploiting the stereo (multichannel) audio signal available at their ears to spatially localize these events. Traditionally SED systems have only been using mono channel audio, motivated by the human listener we propose to extend them to use multichannel audio. The proposed SED system is compared against the state of the art mono channel method on the development subset of TUT sound events detection 2016 database. The proposed method improves the F-score by 3.75% while reducing the error rate by 6%.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Signal Processing, Research group: Audio research group - ARG, Research group: Audio research group
Contributors: Adavanne, S., Parascandolo, G., Pertilä, P., Heittola, T., Virtanen, T.
Pages: 6-10
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the Detection and Classification of Acoustic Scenes and Events 2016 Workshop (DCASE2016)
Publisher: Tampere University of Technology. Department of Signal Processing
ISBN (Electronic): 978-952-15-3807-0

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

Sosiaalinen media brändi- ja asiakastiedon lähteenä

General information

Publication status: Published
MoE publication type: Not Eligible
Organisations: Department of Information Management and Logistics, Research group: Novi, Managing digital industrial transformation (mDIT), University of Vaasa (UVA), University of Tampere
Contributors: Jussila, J., Helander, N., Vuori, V., Okkonen, J.
Number of pages: 2
Pages: 55-56
Publication date: 23 Sep 2016

Host publication information

Title of host publication: TiedeAreena 2016
Volume: 11
Place of publication: Pori
Publisher: Tampereen teknillinen yliopisto, Porin laitos
Editor: Tuomi, P.
ISBN (Print): 978-952-15-3802-5
ISBN (Electronic): 978-952-15-3803-2

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

Some aspects of molecular physics in measuring tissue samples using enose for disease diagnostics

eNose technologies can be used for disease diagnostics. One technology is based on ionized molecules and their drifting speed in an electric field. Ionized molecules can be measured with ion mobility spectrometry and with electrical mobility measurements. Depending on the size scale of these molecules, different physical effects are relevant. We studied the relevance of size scale dependent physics for disease diagnostics.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Automation Science and Engineering, Integrated Technologies for Tissue Engineering Research (ITTE), University of Tampere, Medical School, Tampere University Hospital
Contributors: Karjalainen, M., Roine, A., Oksala, N., Lekkala, J.
Publication date: 2015

Host publication information

Title of host publication: XXI IMEKO World Congress "Measurement in Research and Industry"
Publisher: IMEKO-International Measurement Federation Secretariat
ISBN (Electronic): 978-80-01-05793-3
ASJC Scopus subject areas: Electrical and Electronic Engineering
Keywords: Aerosol physics, Disease diagnostics, Ion mobility spectrometry
Source: Scopus
Source ID: 84951173545

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

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

Social media applications in external B2B transactions: An empirical analysis of the Finnish technology industry

Despite the popularity of the topic, social media research is still limited and focuses largely on the role of consumer-to-consumer (C2C) and business-to-consumer (B2C) domains (Volpentesta and Felicetti, 2012; Michaelidou et al., 2011). In many aspects, B2C social media practices are not directly useful for inter-organizational and business- to-business (B2B) purposes. The main aim of this paper is to increase the understanding of the current applications of social media in external B2B transactions. This is carried out through an extensive survey of companies in the technology industry which are operating purely in B2B markets, having only other companies as customers.
We wanted to understand how industrial B2B companies currently apply social media in their own inter-organizational applications, what potential they see for social media in this context, and what kind of support they need to better adopt social media together with

their customers and partners. A population of 2488 Finnish decision makers from the Federation of Finnish Technology Industries were observed. Based on the answers of 143 different companies, 125 companies were found to wholly (100%) represent B2B markets, and these were chosen as the sample of this particular study.
Studies on social media, especially survey-based studies, have not focused soley on B2B companies, particularly on the inter-organizational applications of social media in B2Bs, except for the B2B-marketing oriented study of Michaelidou et al. (2011) and the study of social media utilization in B2B relationships by Pettersson et al. (2014). This study extends these previous studies by creating new understanding of the maturity of social media integration in businesses, organizational business problems that companies perceive can be solved with social media, and approaches that can support social media adoption in B2B companies.
Managerially, the results can be used, for instance, to better understand the various possibilities of applying social media for inter-organizational use in B2Bs, which are currently only superficially understood by a significant portion of managers. This can help support and facilitate external social media use in B2Bs.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Information Management and Logistics, Research group: Novi, Pori Department, Research group: Business Ecosystems, Networks and Innovations, Managing digital industrial transformation (mDIT), University of Calabria
Contributors: Jussila, J. J., Kärkkäinen, H., Aramo-Immonen, H., Ammirato, S., Michele Felicetti, A., Della Gala, M.
Number of pages: 11
Pages: 1930-1940
Publication date: 2015

Host publication information

Title of host publication: 10th International Forum on Knowledge Asset Dynamics : Culture, Innovation and Entrepreneurship: connecting the knowledge dots
Volume: 10
Place of publication: Bari
ISBN (Electronic): 978-88-96687-07-9
Keywords: social media, business-to-business, enterprise social, survey, inter-organizational

Bibliographical note

ORG=tlo,0.5
ORG=pla,0.5

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

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

Social Media Analytics Empowering Customer Experience Insight

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Managing digital industrial transformation (mDIT), Industrial and Information Management, Research group: Business Data Research Group, Research group: Knowledge and Learning Research Center, Tampere University of Applied Science, Turku University of Applied Science
Contributors: Jussila, J., Boedeker, M., Jalonen, H., Helander, N.
Pages: 25-30
Publication date: 3 Jun 2017

Host publication information

Title of host publication: 5th International Conference on Strategic Innovative Marketing, Volume: 5 : September 23-26, 2016 At Athens, Greece
Publisher: Springer
Editors: Kavoura, A., Sakas, D., Tomaras, P.
ISBN (Electronic): 978-3-319-56288-9

Publication series

Name: Springer Proceedings in Business and Economics
ISSN (Print): 2198-7246

Bibliographical note

jufoid=84314

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

Social capital in hybrid governance - Case study in a global subcontracting process

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: Mäenpää, S., Breite, R.
Publication date: 2015

Host publication information

Title of host publication: Proceedings of the 24th Annual IPSERA Conference Preparing for new competitive challenges, March 29-April 1, Amsterdam, the Netherlands
Publisher: IPSERA
ISBN (Print): 978-90-823707-0-6

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

Social capital characteristics in RD project networks

Network research has multiple approaches that offer knowledge related to multiple network types. This article identifies and discusses social capital characteristics in the context of government-funded RD project networks. Previous literature on this context has typically focused on collaboration between universities and firms while our interest is solely on interfirm relationships. Secondly, the previous literature on interfirm collaboration concerns typically other types of networks such as strategic alliances. We argue, that to understand the dynamics of inter firm collaboration in RD project networks, the research needs to be conducted in coherent environment. Data for this qualitative research was collected by interviewing 18 firm representatives who had experience on participating government-funded RD projects. We recognized social capital characteristics in RD projects and organized these findings under structural, cognitive and relational dimensions of social capital. Results indicate that project networks' social capital characteristics differ in many parts from strategic alliances and thus support our argument. The results can be exploited by project coordinators, innovation officers and project network members to facilitate the interfirm collaboration in RD project networks.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Mechanical Engineering and Industrial Systems, Research area: Manufacturing and Automation
Contributors: Majuri, M., Lanz, M.
Publication date: 4 Oct 2018

Host publication information

Title of host publication: 2018 Portland International Conference on Management of Engineering and Technology (PICMET)
Publisher: IEEE
Article number: 8481775
ISBN (Electronic): 9781890843373
ASJC Scopus subject areas: Strategy and Management, Communication, Engineering (miscellaneous), Management of Technology and Innovation, Organizational Behavior and Human Resource Management, Computer Networks and Communications, Decision Sciences (miscellaneous)

Bibliographical note

jufoid=9093

Source: Scopus
Source ID: 85056486979

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

Social and Economic Importance of Water Services in the Built Environment: Need for More Structured Thinking

Abstract Community water supply takes priority over other water use purposes worldwide. Investment in water and sanitation systems in developing economies brings a multitudeof economic and social benefits. Water infrastructure systems across the world will deteriorateunless substantially more rehabilitation is done. This paper presents a structured and hierarchical framework for sustained water services development consisting of institutions, provision, water infrastructure and production of services that hopefully create better understanding of how to develop our systems and services as part of the built environment for more sustained futures.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Department of Civil Engineering
Contributors: Katko, T. S., Hukka, J. J.
Number of pages: 7
Pages: 217-223
Publication date: 2015
Peer-reviewed: Yes

Publication information

Journal: Procedia Economics and Finance
Volume: 21
ISSN (Print): 2212-5671
Original language: English
Keywords: ageing water infrastructure, institutional development, priorities, production, provision, special features.
Source: RIS
Source ID: urn:E2D918716A9EA0A2093B36459CF62676

Research output: Contribution to journalArticleScientificpeer-review

Smartphone teleoperation for self-balancing telepresence robots

Self-balancing mobile platforms have recently been adopted in many applications thanks to their light-weight and slim build. However, inherent instability in their behaviour makes both manual and autonomous operation more challenging as compared to traditional self-standing platforms. In this work, we experimentally evaluate three teleoperation user interface approaches to remotely control a self-balancing telepresence platform: 1) touchscreen button user interface, 2) tilt user interface and 3) hybrid touchscreen-tilt user interface. We provide evaluation in quantitative terms based on user trajectories and recorded control data, and qualitative findings from user surveys. Both quantitative and qualitative results support our finding that the hybrid user interface (a speed slider with tilt turn) is a suitable approach for smartphone-based teleoperation of self-balancing telepresence robots. We also introduce a client-server based multi-user telepresence architecture using open source tools.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Computing Sciences
Contributors: Ainasoja, A. E., Pertuz, S., Kämäräinen, J.
Number of pages: 8
Pages: 561-568
Publication date: 2019

Host publication information

Title of host publication: VISIGRAPP 2019 - Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications
Publisher: SCITEPRESS
Editors: Kerren, A., Hurter, C., Braz, J.
ISBN (Electronic): 9789897583544
ASJC Scopus subject areas: Computer Science Applications, Computer Vision and Pattern Recognition, Computer Graphics and Computer-Aided Design
Keywords: Teleoperation, Telepresence, User Interface
Electronic versions: 

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

Smart microphone sensor system platform

A platform for a flexible, smart microphone system using available hardware components is presented. Three subsystems are employed, specifically: (a) a set of digital MEMs microphones, with a one-bit serial output; (b) a preprocessing/digital-to-digital converter; and (c) a CPU/DSP-based embedded system with I2S connectivity. Basic preprocessing functions, such as noise gating and filtering can be performed in the preprocessing stage, while application-specific algorithms such as word spotting, beam-forming, and reverberation suppression can be handled by the embedded system. Widely used high-level operating systems are supported including drivers for a number of peripheral devices. Finally, an employment scenario for a wireless home automation speech activated front-end sensor system using the platform is analyzed.

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: University of Patras, BLUE dev Ltd., Former organisation of the author, Ionian University
Contributors: Kokkinis, E., Drossos, K., Tatlas, N., Floros, A., Tsilfidis, A., Agavanakis, K.
Number of pages: 4
Publication date: Apr 2012

Host publication information

Title of host publication: Audio Engineering Society Convention 132
Publisher: AES Audio Engineering Society

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

Site-controlled InAs Quantum Dots for Plasmonics

We present site-controlled epitaxy of InAs quantum dots (QD) for plasmonics and report QD-plasmon coupling in a hybrid structure consisting of site-controlled InAs/GaAs QD chains in the proximity of an Ag film.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Optoelectronics Research Centre, Research group: Semiconductor Technology and Applications, Research group: Laboratory for Future Electronics, Department of Physics, Research group: Nanophotonics
Contributors: Hakkarainen, T., Tommila, J., Schramm, A., Simonen, J., Niemi, T., Strelow, C., Kipp, T., Kontio, J., Guina, M.
Publication date: 2016

Host publication information

Title of host publication: Conference on Lasers and Electro-Optics 2016 : QELS_Fundamental Science
Publisher: OSA - The Optical Society
Article number: FM1B.3
ISBN (Electronic): 978-1-943580-11-8
ASJC Scopus subject areas: Condensed Matter Physics, Electronic, Optical and Magnetic Materials
Keywords: (250.5403) Plasmonics, (160.4236) Nanomaterials, (160.6000) Semiconductor materials

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

Sisäympäristön laadun ja terveellisyyden arviointi energiaparannuskohteissa

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Research group: Concrete and Bridge Structures, Research area: Structural Engineering, Department of Civil Engineering, Research group: Building Physics, Natl Inst Hlth & Welf, Finland National Institute for Health & Welfare, Dept Environm Hlth
Contributors: Mari, T., Leivo, V., Pekkonen, M., Aaltonen, A., Kiviste, M., Haverinen-Shaughnessy, U.
Number of pages: 6
Pages: 13-18
Publication date: 16 Mar 2016

Host publication information

Title of host publication: Sisäilmastoseminaari 2016, Sisäilmayhdistys raportti 34
Publisher: SIY SISÄILMATIETO OY
ISBN (Print): 978-952-5236-44-6

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

Single Shot Time Domain Ghost Imaging using Wavelength Multiplexing

We report on the first demonstration of computational ghost imaging in the time domain using wavelength multiplexing. The wavelength-multiplexed Hadamard patterns used to probe a time-varying waveform enables image reconstruction in real time.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Physics, Research area: Optics, Research group: Nonlinear Fiber Optics, Ita-Suomen yliopisto, Institut FEMTO-ST, UMR 6174 CNRS-Université de Franche-Comté
Contributors: Ryczkowski, P., Barbier, M., Friberg, A. T., Dudley, J. M., Genty, G.
Publication date: 2016

Host publication information

Title of host publication: Frontiers in Optics 2016
Publisher: Optical Society of America (OSA)
Article number: FTh5C.6
ISBN (Electronic): 978-1-943580-19-4

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

Single-mode 1180 nm GaInNAs/GaAs DBR laser diode for frequency doubling to 590 nm: paper CB_11_4

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Optoelectronics Research Centre, Research group: Nanophotonics, Research group: Semiconductor Technology and Applications
Contributors: Korpijärvi, V., Viheriälä, J., Aho, A., Guina, M.
Publication date: 24 Jun 2015

Host publication information

Title of host publication: 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference
Publisher: OSA
ISBN (Print): 978-1-4673-7475-0

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

Single micro-particle scattering detection based on Edge Filter Enhanced Self-Mixing Interferometry

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Research area: Optics, Department of Physics, Research group: Applied Optics
Contributors: Contreras, V., Lonnqvist, J., Toivonen, J.
Pages: CH_P_11
Publication date: 2015

Host publication information

Title of host publication: 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference
Publisher: Optical Society of America
ISBN (Electronic): 978-1-4673-7475-0
Source: Bibtex
Source ID: urn:fc7373a93e31bcda04a5098b47eed6aa

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

Single-frequency 571nm VECSEL for photo-ionization of magnesium

We report the development of an intracavity-frequency-doubled vertical external-cavity surface-emitting laser (VECSEL) emitting at 571 nm for photoionization of magnesium. The laser employs a V-cavity geometry with a gain chip at the end of one cavity arm and a lithium triborate (LBO) crystal for second harmonic generation. The gain chip has a bottom-emitting design with ten GaInAs quantum wells of 7 nm thickness, which are strain compensated by GaAsP. The system is capable of producing up to 2.4 ± 0.1 W (total power in two separate output beams) in the visible. The free-running relative intensity noise was measured to be below −55 dBc/Hz over all frequencies from 1 Hz to 1 MHz. With acoustic isolation and temperature regulation of the laser breadboard, the mode-hop free operation time is typically over 5 hrs. To improve the long-term frequency stability, the laser can be locked to a Doppler-free transition of molecular iodine. To estimate the short-term linewidth, the laser was tuned to the resonance of a reference cavity. From analysis of the on-resonance Hänsch-Couillaud error signal we infer a linewidth of 50 ± 10 kHz. Light at 285 nm is generated with an external build-up cavity containing a β-barium borate (BBO) crystal. The UV light is used for loading 25Mg+ ions in a surface-electrode RF Paul trap. These results demonstrate the applicability and versatility of high-power, single-frequency VECSELs with intracavity harmonic generation for applications in atomic and molecular physics.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Optoelectronics Research Centre, Research group: Semiconductor Technology and Applications, National Institute of Standards and Technology, Time and Frequency Division, Boulder, Colorado
Contributors: Burd, S., Leinonen, T., Penttinen, J., Allcock, D., Slichter, D., Srinivas, R., Wilson, A., Guina, M., Leibfried , D., Wineland, D.
Number of pages: 8
Publication date: 2 Jun 2016

Host publication information

Title of host publication: Proceedings of SPIE : Vertical External Cavity Surface Emitting Lasers (VECSELs) VI
Volume: 9734
Place of publication: San Francisco
Publisher: SPIE
Article number: 973411
ISBN (Electronic): 9781628419696

Publication series

Name: SPIE Conference Proceedings
ISSN (Print): 0277-786X
ISSN (Electronic): 1996-756X
ASJC Scopus subject areas: Atomic and Molecular Physics, and Optics
Keywords: VECSEL, OPSL, SDL, frequency doubling, SHG, ion trapping, single-frequency, photoionization, doppler-free spectroscopy, magnesium

Bibliographical note

JUFOID=71479

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

Single exposure lensless subpixel phase imaging

Lensless phase-retrieval system with phase modulation of free propagation wavefront is proposed. Contrary to the traditional super-resolution phase-retrieval, the method in this paper requires a single observation only and uses advanced SR-SPAR iterative technique. Successful object imaging relies on modulation of the object wavefront with a random phase-mask, which generates enlarged intensity patterns, allowing us to extract more information than it is possible without such a mask. The achieved high-quality super-resolution phase-imaging is demonstrated by simulation-tests produced with the parameters corresponding to the physical prototype of the considered optical system.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Computing Sciences, Research group: Computational Imaging-CI
Contributors: Kocsis, P., Shevkunov, I., Katkovnik, V., Egiazarian, K.
Number of pages: 9
Publication date: 2019

Host publication information

Title of host publication: Digital Optical Technologies 2019
Publisher: SPIE, IEEE
Editors: Kress, B. C., Schelkens, P.
ISBN (Electronic): 9781510628038

Publication series

Name: Proceedings of SPIE - The International Society for Optical Engineering
Volume: 11062
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: Diffractive optical element, Lensless imaging, Lensless system design, Phase imaging, Phase measurement, Phase retrieval, Sparse representation, Sub-pixel resolution
Source: Scopus
Source ID: 85074197001

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

Simultenious binary hash and features learning for image retrieval

Content-based image retrieval systems have plenty of applications in modern world. The most important one is the image search by query image or by semantic description. Approaches to this problem are employed in personal photo-collection management systems, web-scale image search engines, medical systems, etc. Automatic analysis of large unlabeled image datasets is virtually impossible without satisfactory image-retrieval technique. It's the main reason why this kind of automatic image processing has attracted so much attention during recent years. Despite rather huge progress in the field, semantically meaningful image retrieval still remains a challenging task. The main issue here is the demand to provide reliable results in short amount of time. This paper addresses the problem by novel technique for simultaneous learning of global image features and binary hash codes. Our approach provide mapping of pixel-based image representation to hash-value space simultaneously trying to save as much of semantic image content as possible. We use deep learning methodology to generate image description with properties of similarity preservation and statistical independence. The main advantage of our approach in contrast to existing is ability to fine-tune retrieval procedure for very specific application which allow us to provide better results in comparison to general techniques. Presented in the paper framework for data- dependent image hashing is based on use two different kinds of neural networks: convolutional neural networks for image description and autoencoder for feature to hash space mapping. Experimental results confirmed that our approach has shown promising results in compare to other state-of-the-art methods.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Signal Processing, Research group: Computational Imaging-CI, Don State Technical University, Univ of Texas at San Antonio
Contributors: Frantc, V. A., Makov, S. V., Voronin, V. V., Marchuk, V. I., Semenishchev, E. A., Egiazarian, K. O., Agaian, S.
Publication date: 2016

Host publication information

Title of host publication: Mobile Multimedia/Image Processing, Security, and Applications 2016
Publisher: SPIE
Article number: 986902
ISBN (Electronic): 9781510601109

Publication series

Name: SPIE Conference Proceedings
Volume: 9869
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: autoencoder, content{based image retrieval, deep convolutional neural network, semantic hashing
Source: Scopus
Source ID: 84991480411

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

Simulointi nopeuttaa käyttöiän määritystä

General information

Publication status: Published
MoE publication type: D1 Article in a trade journal
Organisations: Department of Materials Science, Research group: Tribology and Machine Elements, Department of Mechanical Engineering and Industrial Systems, Research group: Kokeellinen virtaustekniikka, Research area: Applied Mechanics, Department of Intelligent Hydraulics and Automation, Research group: Fluid power automation in mobile machines, Department of Electrical Engineering, Research area: Reliability
Contributors: Ojala, P., Saarenrinne, P., Miettinen, J., Multanen, P., Kiilunen, J., Hietala, J., Kolu, A., Pippola, J., Mostofizadeh, M., Ylönen, M.
Number of pages: 4
Pages: 24-27
Publication date: 2015
Peer-reviewed: Unknown

Publication information

Journal: Promaint
Volume: 2
ISSN (Print): 1797-2000
Original language: Finnish

Bibliographical note

ORG=mol,0.25
ORG=mei,0.25
ORG=iha,0.25
ORG=dee,0.25

Research output: Contribution to journalArticleProfessional

Simulation studies of DFB laser longitudinal structures for narrow linewidth emission

Simulation studies targeting high-power narrow-linewidth emission from DFB lasers are presented. The linewidth and output power calculations take into account the mirror losses, including the grating and the facets, as well as spontaneous emission noise, effective refractive index, power and carrier density variations inside the cavity. The longitudinal power and carrier density distributions have been evaluated and their effects on longitudinal spatial hole burning and possible side mode lasing are discussed.

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: Virtanen, H., Uusitalo, T., Dumitrescu, M.
Number of pages: 2
Pages: 153-154
Publication date: 17 Aug 2016

Host publication information

Title of host publication: 16th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2016
Publisher: IEEE
ISBN (Electronic): 9781467386036
ASJC Scopus subject areas: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Modelling and Simulation, Numerical Analysis
Source: Scopus
Source ID: 84987641768

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

Simulation of photon-photon resonance enhanced direct modulation bandwidth of DFB lasers

Simulations and experimental results of high-frequency photon-photon resonance are used to examine the possibilities to extend the direct modulation bandwidth in dual-mode distributed feedback lasers beyond the conventional limit set by the carrier-photon resonance.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Optoelectronics Research Centre, Research group: Semiconductor Technology and Applications, Brighterwave Inc, Politecnico di Torino
Contributors: Dumitrescu, M., Uusitalo, T., Virtanen, H., Laakso, A., Bardella, P., Montrosset, I.
Number of pages: 2
Pages: 147-148
Publication date: 17 Aug 2016

Host publication information

Title of host publication: 16th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2016
Publisher: IEEE
ISBN (Electronic): 978-1-4673-8603-6
ASJC Scopus subject areas: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Modelling and Simulation, Numerical Analysis

Bibliographical note

EXT="Laakso, A."

Source: Scopus
Source ID: 84987641496

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

Simulation of ash-forming compounds in the kraft recovery boiler

This paper presents a summary of the doctoral dissertation titled “Modeling Fume Particle Dynamics and Deposition with Alkali Metal Chemistry in Kraft Recovery Boilers”. In the thesis, a computational model was developed and used to simulate the behavior of alkali metal compounds in kraft recovery boilers. The model combines, for the first time, the methods of CFD (Computational Fluid Dynamics), equilibrium chemistry, and fine particle dynamics to model the formation and deposition of fume particles. Fume particles are below 1 μm in diameter and form through the condensation of the alkali metal compounds. The model has been partially validated in an operating recovery boiler in terms of fume particle composition, but the modeling results also shed light on processes that cannot be investigated through experimental methods alone. For example, the modeling results indicate that thermophoresis is the main factor leading to fume deposit formation.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Chemistry and Bioengineering, Research group: Power Plant and Combustion Technology
Contributors: Leppänen, A., Välimäki, E., Oksanen, A.
Number of pages: 10
Publication date: 2015

Host publication information

Title of host publication: 10th European Conference on Industrial Furnaces and Boilers
Place of publication: Porto, Portugal
ISBN (Electronic): 978-972-99309-7-3
Keywords: kraft recovery boiler, alkali metal, fine particle, deposition, computational fluid dynamics
Source: Bibtex
Source ID: urn:c88098f51c0b1f0404f1a0f11bbb345f

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

SimpleTree: An Efficient Open Source Tool to Build Tree Models from TLS Clouds

An open source tool named SimpleTree, capable of modelling highly accurate cylindrical tree models from terrestrial laser scan point clouds, is presented and evaluated. All important functionalities, accessible in the software via buttons and dialogues, are described including the explanation of all necessary input parameters. The method is validated utilizing 101 point clouds of six different tree species, in the main evergreen and coniferous trees. All scanned trees have been destructively harvested to get accurate estimates of above ground biomass with which we assess the accuracy of the SimpleTree-reconstructed cylinder models. The trees were grouped into four data sets and for each one a Concordance Correlation Coefficient of at least 0.92 (0.92, 0.97, 0.92, 0.94) and an total relative error at most ~8 % (2.42%, 3.59%, –4.59%, 8.27%) was achieved in the comparison of the model results to the ground truth data. A global statistical improvement of derived cylinder radii is presented as well as an efficient optimization approach to automatically improve user given input parameters. An additional check of the SimpleTree results is presented via comparison to the results of trees reconstructed using an alternative, published method.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Department of Mathematics, Research group: MAT Inverse Problems, Mathematical modelling with wide societal impact (MathImpact)
Contributors: Hackenberg, J., Spiecker, H., Calders, K., Disney, M., Raumonen, P.
Number of pages: 50
Pages: 4245-4294
Publication date: 23 Nov 2015
Peer-reviewed: Yes

Publication information

Journal: Forests: Open Access Journal
Volume: 6
Issue number: 11
ISSN (Print): 1999-4907
Ratings: 
  • Scopus rating (2015): CiteScore 1.76 SJR 0.633 SNIP 0.761
Original language: English
URLs: 

Research output: Contribution to journalArticleScientificpeer-review

Short-range supercontinuum based lidar for combustion diagnostics

We developed a short range Lidar system using a supercontinuum source spectrally tailored to cover the ro-vibrational transition energies of desired components of a flue gas. The system enables simultaneous remote measurements of the gas parameters, like temperature and concentration which play a key role in the performance of combustion power plants. The technique requires only one inspection window and can thus be used in combustion units with limited access. It exploits differential absorption between specific wavelength bands of the gas absorption spectrum. The transmittance of individual wavelength band is derived from the detected backscattered temporal intensity of the supercontinuum pulses. We demonstrate preliminary industrial measurement of water vapor temperature and concentration in a full scale boiler. The technique also enables 3D mapping of temperature and concentration.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Physics, Valmet Technologies Oy
Contributors: Saleh, A., Ryczkowski, P., Genty, G., Toivonen, J.
Publication date: 2019

Host publication information

Title of host publication: SPIE Future Sensing Technologies
Publisher: SPIE, IEEE
Editors: Kimata, M., Valenta, C. R.
Article number: 111970Y
ISBN (Electronic): 9781510631113

Publication series

Name: Proceedings of SPIE
Volume: 11197
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: Combustion, Diagnostics, Lidar, Remote sensing, Supercontinuum

Bibliographical note

jufoid=71479

Source: Scopus
Source ID: 85078209433

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

Short range HF radio channel measurements: Search for one path channels

High frequency (HF) radio channel is diverse since it could be a single path channel or a multipath channel. However, there is lack of information about what is the ratio between these. Herein, results from a measurement campaign in Finland for ground wave and near vertical incidence skywave (NVIS) paths are reported. It was observed that one path channels are rather widely available and in ground waves they dominate. This means that channels for high modulation orders (high data rate HF) are available and should be searched for during the link establishment process. Unfortunately, the current link establishment processes do not support that such that maybe it is time for improvements. Another observation was that if channels are available at all, then usually there are multiple channels available. This means that recently introduced wideband (up to 24 kHz) and multiband (several 3 kHz bands) HF communications have room.

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, Oulun Yliopisto/CWC, Kyynel Oy
Contributors: Saarnisaari, H., Hovinen, V., Tuomivaara, H., Yli-Kaakinen, J.
Number of pages: 6
Publication date: 2016

Host publication information

Title of host publication: 2016 International Conference on Military Communications and Information Systems (ICMCIS)
ISBN (Electronic): 9781509017775

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

Shared use of research laboratories Changing spatial concepts: A Case Study in a Finnish Biomedical Organization

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: School of Architecture, Research group: Public Buildings, Department of Civil Engineering
Contributors: Yläoutinen, J., Peltoniemi, S., Nenonen, S.
Number of pages: 15
Pages: 183-197
Publication date: 2015

Host publication information

Title of host publication: Conference on Research on Health Care Architecture : ARCH 14 Conference Proceedings November 19-21, 2014, Espoo, Finland
Place of publication: Helsinki
ISBN (Electronic): 978-952-60-6201-3

Publication series

Name: Aalto University publication series ART + DESIGN + ARCHITECTURE, 6/2015
Publisher: Aalto University
ISSN (Print): 1799-4861
ISSN (Electronic): 1799-4853
Keywords: healthcare architecture, hospital architecture, care facilities, hospital environments

Bibliographical note

ORG=ark,0.5
ORG=rak,0.5

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

Shadow Ghost Imaging in the Time Domain

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Physics, Research area: Optics, Research group: Nonlinear Fiber Optics, Frontier Photonics
Contributors: Ryczkowski, P., Barbier, M., Friberg, A. T., Dudley, J. M., Genty, G.
Publication date: 2015

Host publication information

Title of host publication: Frontiers in Optics 2015
Publisher: OSA
Article number: FW6C.1
ISBN (Electronic): 978-1-943580-03-3
Source: Bibtex
Source ID: urn:a11e0cac2c12b03797ccabee4da08320

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

Service orientation and innovation in the strategies of manufacturing SMEs

Manufacturing SMEs have an important role in the supply chains of larger firms. When large firms servitize their business, also SMEs may need to consider their strategies concerning services. Limited research attention has been directed at servitization as a strategic choice of SMEs and its different manifestations in service orientation and innovation. The aim of the paper is to increase understanding on the role of services in the strategies of manufacturing SMEs. The focus is on service orientation and innovation, and identification of differences between component manufacturers and equipment manufacturers. A qualitative, exploratory research strategy is employed in the context of nineteen technology-intensive manufacturing SMEs. The findings from SME managers’ interviews show that equipment manufacturers have a stronger service orientation than component manufacturers in terms of share of services, orientation to process-centric services, and service variety. The majority of respondents have experiences with in-house service development primarily, and customer-centric service development took place only in a few companies. Furthermore, companies featured services in their strategies either minimally, reactively or proactively. Equipment manufacturers were more likely to take the proactive approach whereas component manufacturers were more reactive or fully avoided services. This paper offers valuable knowledge about the ways in which technology-intensive SMEs feature service orientation and innovation into their strategies. Besides changes in offerings, capabilities and value networks, servitization can drive changes in the business scope and innovation processes of the manufacturing SMEs.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Industrial Management, Research group: Center for Research on Operations Projects and Services
Contributors: Martinsuo, M., Väliaho, V.
Number of pages: 17
Publication date: Jun 2016

Host publication information

Title of host publication: 23rd Innovation and Product Development Management Conference (IPDMC) : 12-14 June, 2016, Glasgow, U.K.
Publisher: EIASM

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

Service Failure and Interruption Probability Analysis for Licensed Shared Access Regulatory Framework

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
Contributors: Gudkova, I., Samouylov, K., Ostrikova, D., Mokrov, E., Ponomarenko-Timofeev, A., Andreev, S., Koucheryavy, Y.
Number of pages: 9
Pages: 123-131
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

Bibliographical note

INT=elt,"Ponomarenko-Timofeev, Aleksei"

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

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

Securing the flow of information in renovation projects: Sustainable synergies from buildings to the urban scale

Continuous flow of information is a paramount importance for the success of a renovation project. This has been a clear statement in several researches, clearances, publications and press releases in Finland. Tampere University of Technology (TUT) studied Finnish state supported mold renovations in three independent researches between 2010 and 2016. First one brought out that the observations made in the condition investigation weren’t always taken into account in the implementation of the renovation. Next two researches focused to study the additional state grant processes, where the external review procedures were helping the flow of information. However, the processes still had some shortcomings and therefore the research team developed a form based method that property owners and builders can utilize for a successful removal of the indoor air problems. This paper describes the outlines of the form as well as the principles and methods for securing the flow of information from condition investigations to the renovation design and quality assurance of the building project. Project planning and monitoring measurements are also taken into account in the method.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Civil Engineering, Research area: Structural Engineering
Contributors: Marttila, T., Annila, P., Suonketo, J., Kero, P., Pentti, M.
Number of pages: 6
Pages: 228-233
Publication date: 2017
Peer-reviewed: Yes

Publication information

Journal: PROCEDIA ENVIRONMENTAL SCIENCES
Volume: 38
ISSN (Print): 1878-0296
Original language: English
Keywords: Moisture damage, Indoor air quality (IAQ), Condition investigation, Renovation design
Source: RIS
Source ID: urn:1E04A8F47620BCE57737681F0930D8DB

Research output: Contribution to journalArticleScientificpeer-review

Second-harmonic generation from thermally-evaporated indium selenide thin films

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Physics, Research group: Nonlinear Optics, Research area: Optics
Contributors: Slablab, A., Divya, S., Koskinen, K., Czaplicki, R., Kailasnath, M., Radhakrishnan, P., Kauranen, M.
Pages: CE_12_4
Publication date: 21 Jun 2015

Host publication information

Title of host publication: The European Conference on Lasers and Electro-Optics 2015 : Munich Germany 21–25 June 2015
Publisher: Optical Society of America
ISBN (Electronic): 978-1-4673-7475-0
Source: Bibtex
Source ID: urn:888ad7045d652720bf995336ec1122eb

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

Scanning of radioluminescence emission with a PMT for remote detection of alpha contamination

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Department of Physics, Research area: Optics, Research group: Applied Optics, STUK Radiat & Nucl Safety Author, Commiss European Communities, Joint Res Ctr, Inst Transuranium Elements
Contributors: Sand, J., Ihantola, S., Nicholl, A., Hrnecek, E., Toivonen, J., Toivonen, H., Peräjärvi, K.
Publication date: 2015

Host publication information

Title of host publication: The European Conference on Lasers and Electro-Optics 2015
Publisher: Optical Society of America
Article number: CN_2_3
ISBN (Electronic): 978-1-4673-7475-0
Keywords: Radioluminescence, alpha radiation, Optical detection of alpha emitters
Source: Bibtex
Source ID: urn:c5e6c13ca1357cdf98039843381a5b5f

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

Savukaasun NOx-päästöjen epäsuora monitorointi maakaasukäyttöisissä polttolaitoksissa

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, Research area: Dynamic Systems, Helen Oy
Contributors: Korpela, T., Kumpulainen, P., Majanne, Y., Häyrinen, A.
Number of pages: 6
Pages: 1-6
Publication date: 2015

Host publication information

Title of host publication: Automaatio XXI seminaari
Publisher: Suomen Automaatioseura
Editor: Jämsä-Jounela, S.
ISBN (Print): 978-952-5183-46-7

Publication series

Name: SAS julkaisusarja
No.: 44
ISSN (Print): 1455-6502

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

Sata vuotta vesihuoltoa Suomessa

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Civil Engineering
Contributors: Juuti, P., Katko, T. S., Rajala, R.
Number of pages: 3
Pages: 13-15
Publication date: Dec 2017
Peer-reviewed: Yes

Publication information

Journal: Vesitalous
Volume: 58
Issue number: 6
ISSN (Print): 0505-3838
Original language: Finnish

Research output: Contribution to journalArticleScientificpeer-review

Sata vuotta Suomen suurimmasta lavantautiepidemiasta

General information

Publication status: Published
MoE publication type: A2 Review article in a scientific journal
Organisations: Civil Engineering
Contributors: Juuti, P., Rajala, R.
Number of pages: 3
Pages: 12-14
Publication date: 2017
Peer-reviewed: Yes

Publication information

Journal: Vesitalous
Volume: 2017
Issue number: 1
ISSN (Print): 0505-3838
Original language: Finnish

Research output: Contribution to journalReview ArticleScientificpeer-review

Samsung and Volkswagen crisis communication in Facebook and Twitter: A comparative study

Since September 2015 at least two major crises have emerged where major industrial companies producing consumer products have been involved. In September 2015 diesel cars manufactured by Volkswagen turned out to be equipped with cheating software that caused NO2 and other emission values to be reduced to acceptable levels while tested from the real, unacceptable values in normal use. In August 2016 reports began to appear that the battery of a new smart phone produced by Samsung, Galaxy Note7, could begin to burn, or even explode, while the device was on. In Nov. 2016 also 34 washing machine models were reported to have caused damages due to disintegration. In all cases, the companies have experienced substantial financial losses, their shares have lost value, and their reputation has suffered among consumers and other stakeholders. In this paper, we study the commonalities and differences in the crisis management strategies of the companies, mostly concentrating on the crisis communication aspects. We draw on Situational Crisis Communication Theory (SCCT). The communication behaviour of the companies and various stakeholders during crisis is performed by investigating the official web sites of the companies and communication in Twitter and Facebook on their own accounts. We also collected streaming data from Twitter where Samsung and the troubled smart phone or washing machines were mentioned. For VW we also collected streaming data where the emission scandal or its ramifications were mentioned and performed several analyses, including sentiment analysis.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Industrial and Information Management, Jyväskylän yliopisto, Laboratory of Inductrial and Information Management
Contributors: Zhang, B., Veijalainen, J., Kotkov, D.
Number of pages: 12
Pages: 312-323
Publication date: 2017

Host publication information

Title of host publication: WEBIST 2017 - Proceedings of the 13th International Conference on Web Information Systems and Technologies
Publisher: SCITEPRESS
ISBN (Electronic): 9789897582462
ASJC Scopus subject areas: Computer Networks and Communications, Information Systems
Keywords: Crisis communication strategies, Facebook, Samsung Galaxy Note 7 crisis, Samsung washing machine crisis, SCCT, Sentiment analysis, Twitter, Volkswagen emission crisis
Source: Scopus
Source ID: 85024488684

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

Safety, Space and Structure Quality Requirements in Construction Scheduling

Abstract Quality assessment of a construction project schedule can be a challenging task for project stakeholders. A little research work has addressed quality of schedules though a good project schedule can be considered as of the key factors of project success. The development of a reliable and easy to perform construction schedule quality assessment procedure seems to be a challenging task. Since Schedule Health Assessment of a construction project has to be strictly related to process requirements, it is used the3 “S” rule as a starting point and framework for obtaining improved understanding of quality of construction schedules. The 3 “S” are Safety, Space and Structure, meaning that the planned process should provide a safe working environment to construction workers, sufficient space to perform construction activities and the required sequence of construction operations and project phases.The aim of the study is to implement a schedule quality assessment method that takes into account the 3“S” rule of construction process.The 3“S” requirements can be successfully integrated in a Schedule Health Assessment method, but to facilitate their implementation and control a flow-line chart is needed,thus the schedule tool becomes a new requirement for construction schedule quality control.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
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: Bragadin, M. A., Kähkönen, K.
Number of pages: 8
Pages: 407-414
Publication date: 2015
Peer-reviewed: Yes

Publication information

Journal: Procedia Economics and Finance
Volume: 21
ISSN (Print): 2212-5671
Original language: English
Keywords: Construction management, Project Control, Project Scheduling, Quality, Safety.
Source: RIS
Source ID: urn:F0EEB88647642A7A838E1B2E16C028A8

Research output: Contribution to journalArticleScientificpeer-review

Role of Water Cooperatives in Water Service Production - Lessons from Finland and Denmark

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering
Contributors: Pietilä, P., Arvonen, V., Katko, T.
Pages: 1152-1161
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
Volume: V
Publisher: Tampere University of Technology
Editor: Achour, N.
ISBN (Electronic): 978-952-15-3745-5

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

Role of Power and Sense Making in the Briefing of a Small Renovation Project

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research area: Construction Management and Economics, Research group: Digitalization in the real estate and construction sector
Contributors: Naaranoja, M., Kähkönen, K., Keinänen, M.
Pages: 611-621
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the CIB World Building Congress 2016: Volume I - Creating built environments of new opportunities
Publisher: Tampere University of Technology. Department of Civil Engineering
ISBN (Electronic): 978-952-15-3741-7

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

Roadmap towards the vision of the future power system and electricity market

This paper reports the results of the Finnish national project "Roadmap 2025" which had two main objectives. The first one was to clarify the long term vision (up to 2035) of the power system and electricity market, and the second one was to create a roadmap, a development path towards the vision. The project was partially an update of the project "Vision of the Power System 2030", reported at CIRED 2007. However, instead of focusing only on technological issues, the project also included electricity market and service market perspectives and emphasized the necessary actions needed in changing the present system into the system of the future. The main results can be summarized as follows: Challenges of the future flexible power system which will be achieved by strong transmission network, cross-border grid connections, automation, undergrounding of MV and LV networks, microgrids, controllable loads, energy storages and renewable energy.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electrical Engineering, Research area: Power engineering, University of Vaasa (UVA), Department of Chemistry and Bioengineering, Lappeenranta University of Technology, Oy Merinova Ab
Contributors: Kumpulainen, L., Kauhaniemi, K., Repo, S., Valkealahti, S., Honkapuro, S., Partanen, J., Koivisto-Rasmussen, R., Järventausta, P.
Publication date: 2016

Host publication information

Title of host publication: CIRED Workshop 2016
Publisher: Institution of Engineering and Technology
ISBN (Electronic): 978-1-78561-202-2
ASJC Scopus subject areas: Electrical and Electronic Engineering
Source: Scopus
Source ID: 85007529978

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

Risk Assessment of Major Storm Situation in Distribution System

Risk and reliability have a significant connection in meaning; both of them are the facts for one inference. High level of risk is resource of lower reliability. Risk management in power system has a variety of different subjects including models, methods and applications. Risk is a mixture of probability of disturbance event and the negative effect of that occurrence. Usually it counted for random accident which has harmful effect on people’s life and environment. In this paper risks study of storm situation modelled. Random failures in power
system are the origin of risk and cannot control by staff. Monte-Carlo Simulation (MCS) has used to model the fault frequencies and outage time of customers. The two tools which use in financial studies to make investment decision and applicable in power systems are Value-at-Risk (VaR) and Conditional Value-at-Risk (CVaR) Result of study compared to the actual reliability which confirm the
improvement in the reliability of system. It is not possible to predict the precise amount of load value, Concerns of power outage in local area and possibility
of a general blackout.

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: Dehghani, N., Supponen, A., Repo, S.
Publication date: 1 Sep 2015

Host publication information

Title of host publication: 2015 50th International Universities Power Engineering Conference (UPEC)
Publisher: IEEE
ISBN (Print): 978-1-4673-9682-0

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

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

Riding for a fall in outsourced ISD: Knowledge transfer challenges between the onshore vendor and the offshored unit

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Information Management and Logistics, Research group: Novi, Managing digital industrial transformation (mDIT), Tampere University of Technology
Contributors: Alanne, A., Pekkola, S.
Number of pages: 17
Pages: 124-140
Publication date: 2015

Host publication information

Title of host publication: Achieving Success and Innovation in Global Sourcing: Perspectives and Practices : 9th Global Sourcing Workshop 2015, La Thuile, Italy, February 18-21, 2015, Revised Selected Papers
Place of publication: Germany
Publisher: Springer Verlag
Editors: Oshri, I., Kotlarsky, J., Willcocks, L.
ISBN (Print): 978-3-319-26738-8
ISBN (Electronic): 978-3-319-26739-5

Publication series

Name: Lectures Notes in Business Information Processing
Volume: 236
ISSN (Print): 1865-1348

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

RF energy harvesting system with RFID-enabled charge storage monitoring

Radio frequency (RF) energy scavenging is a compelling approach to energize the low-power wireless devices. We present an energy harvesting system consists of a low-power RF switch circuitry and a passive UHF RFID tag. When the voltage at the storage capacitor terminals exceeds 0.58 V, RF switch connects the UHF RFID microchip to a dipole-type tag antenna. This way, an RFID reader can detect
the charge storage level wirelessly with minimal power consumption at the harvester. In this paper, we detail the development of the system and present results from both simulations and measurement. Overall, we were able to achieve 0.58 V at the storage capacitor and detect the storage level
indicator tag at the distance of 5.1 m in an experiment where regular 8.7 dBi patch antennas were connected to the harvester input and output of an RFID reader emitting 2.5 W EIRP.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Faculty of Biomedical Sciences and Engineering, Research group: Wireless Identification and Sensing Systems Research Group, Research group: Wireless Identification and Sensing Systems Research Group
Contributors: Pournoori, N., Khan, W., Ukkonen, L., Björninen, T.
Number of pages: 4
Publication date: 26 Sep 2018

Host publication information

Title of host publication: 2018 IEEE International Conference on RFID Technology & Application (RFID-TA)
Publisher: IEEE
ISBN (Electronic): 978-1-5386-5057-8

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

Revisiting technological depths and breadths effects on firm performance: the case of pharmaceutical industry

General information

Publication status: Published
MoE publication type: B3 Non-refereed article in conference proceedings
Organisations: Information and Knowledge Management, Research group: Business Ecosystems, Networks and Innovations, VTT Tech Res Ctr Finland, VTT Technical Research Center Finland, VTT Technical Research Centre of Finland, Innovation and Knowledge Economy, VTT Technical Research Centre of Finland
Contributors: Suominen, A., Hajikhani, A., Seppänen, M.
Publication date: Jun 2019

Host publication information

Title of host publication: Proceedings of International Society for Professional Innovation Management (ISPIM) : 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 contributionScientific

Revisiting gray pixel for statistical illumination estimation

We present a statistical color constancy method that relies on novel gray pixel detection and mean shift clustering. The method, called Mean Shifted Grey Pixel – MSGP, is based on the observation: true-gray pixels are aligned towards one single direction. Our solution is compact, easy to compute and requires no training. Experiments on two real-world benchmarks show that the proposed approach outperforms state-of-the-art methods in the camera-agnostic scenario. In the setting where the camera is known, MSGP outperforms all statistical methods.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Computing Sciences, Czech Technical University in Prague, Intel Finland
Contributors: Qian, Y., Pertuz, S., Nikkanen, J., Kämäräinen, J., Matas, J.
Number of pages: 11
Pages: 36-46
Publication date: 2019

Host publication information

Title of host publication: VISIGRAPP 2019 - Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications
Publisher: SCITEPRESS
Editors: Kerren, A., Hurter, C., Braz, J.
ISBN (Electronic): 9789897583544
ASJC Scopus subject areas: Computer Science Applications, Computer Vision and Pattern Recognition, Computer Graphics and Computer-Aided Design
Keywords: Color Constancy, Gray Pixel, Illumination Estimation
Electronic versions: 

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

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

Re-use of engineering design rationale in Finnish SME project based industry

This study presents views on barriers of re-use of engineering design rationale. The research data was gathered by interviewing 29 persons who work in 19 different Finnish SME engineering project based companies. The topic was studied on three main levels: due to actions of business management, due to actions of project team and due to individuals own action. From this perspective, six categories of barriers of tacit knowledge re-use were found: Time management, Tools and ocumentation practices, Working methods, Validity of information, Well-being at work and Distinction in competence.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Mechanical Engineering and Industrial Systems, Research area: Design, Development and LCM, Tampere University
Contributors: Ellman, A., Paronen, J., Juuti, T. S., Tiainen, T.
Number of pages: 8
Pages: 1825-1832
Publication date: 24 May 2018

Host publication information

Title of host publication: Proceedigns of the Design 2018 15th International Design Conference
Publisher: The Design Society
ISBN (Electronic): 978-953-7738-59-4
Keywords: design knowledge, design practice, design management
DOIs: 

Bibliographical note

jufoid=84955

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

Resource – Space Charts for Construction Workspace Scheduling

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
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: Bragadin, M. A., Kähkönen, K.
Pages: 677-688
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the CIB World Building Congress 2016: Volume III - Building Up Business Operations and Their Logic. Shaping Materials and Technologies
Publisher: Tampere University of Technology. Department of Civil Engineering
ISBN (Electronic): 978-952-15-3743-1

Bibliographical note

EXT="Bragadin, Marco A."

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

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

Resilient Asset Management and Governance Fordeteriorating Water Services Infrastructure

This paper argues that strategic asset management and a sound regulatory regime are required urgently if we want to change the current paradigm of aging and decaying water services infrastructure and expand the coverage of improved water services in the developing economies. In the OECD countries access to safe water supply and sanitation has largely been ensured through substantial investment over many decades. Yet, significant investments will still be required to rehabilitate the existing infrastructures, to bring them into conformity with more stringent environmental and health regulations, and to maintain service quality in the future. In the non-OECD countries the challenges are more daunting. Large parts of their population have no access and many suffer from unsatisfactory services. Nearly one billion people lack access to clean drinking water and 2.6 billion people lack access to improved sanitation services.Lack of sound economic regulatory frameworks and enforcement regimes, and poor asset management practices, in particular underpricing of water services is a common problem throughout the world.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Department of Civil Engineering, Department of Chemistry and Bioengineering
Contributors: Hukka, J. J., Katko, T. S.
Number of pages: 8
Pages: 112-119
Publication date: 2015
Peer-reviewed: Yes

Publication information

Journal: Procedia Economics and Finance
Volume: 21
ISSN (Print): 2212-5671
Original language: English
Keywords: aging and deteriorating water services infrastructure, investment gap, strategic asset management, regulatory and enforcement framework, sustainability.
Source: RIS
Source ID: urn:B63C341C3AC1323B613E64632E9D1135

Research output: Contribution to journalArticleScientificpeer-review

Research-industry collaboration: a review of the literature on evaluation methods and motivations

Relationships and collaborations between research and industry play an essential role in sustaining innovation. Therefore, different types of innovation models developed to refer to a set of interaction channels, mechanism and forms of linkage between academia and industry. The latter studies highlight enhancing and diminishing factors of collaboration management, practices on knowledge interactions and collaborative relationships on various levels depending on considered industrial sectors. This review establishes the state of current knowledge in the field and classifies key metrics and indicators for evaluation of research-industry collaboration linkage.

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, CERN, European Organization for Nuclear Research (CERN)
Contributors: Solodko, A., Mäkinen, S., Lasheras, N. C., Bedolla, J. S., Saari, U.
Number of pages: 7
Publication date: 29 Aug 2019

Host publication information

Title of host publication: PICMET 2019 Conference : August 25-29, 2019, Portland, Oregon, USA
Place of publication: Portland
Article number: 19R0108
ISBN (Electronic): 978-1-890843-40-3

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

Requirements from industrial internet for innovations in advanced industrial services

Manufacturing firms are experimenting with the possibilities of the Industrial Internet, while at the same time adding services and service-related business models to their offerings. Previous research is not, yet, clear on how these simultaneous transformations are handled, particularly when firms being to offer more advanced industrial services. The objective in this study is to identify the key expectations and requirements that an industrial system manufacturer faces, when adopting Industrial Internet and innovating advanced industrial services for its business customers. A single case study was carried out in a manufacturing firm offering complex industrial systems and related services to business customers. Seventeen interviews and three workshops were carried out, to collect data. The results show that the manufacturing firms need novel segmentation criteria, to map their customer base and its prospects for advanced services. Four systemic requirements are identified, for the manufacturing firm to benefit from the Industrial Internet in advanced industrial services. As Industrial Internet can enable advanced services that are highly systemic in nature, service innovations require that the business ecosystem is engaged in the development work together with the manufacturing firm.

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
Contributors: Martinsuo, M., Laurila, F.
Number of pages: 16
Publication date: Jun 2018

Host publication information

Title of host publication: Proceedings of the 25th Innovation and Product Development Management Conference
Publisher: European Institute for Advanced Studies in Management, EIASM

Publication series

Name: International Product Development Management Conference
ISSN (Electronic): 1998-7374

Bibliographical note

INT=ttj,"Laurila, Fanni"

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

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

Remarks on characterization of bent functions in terms of gibbs dyadic derivatives

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), University of Niš, Technical University of Dortmund
Contributors: Stanković, R. S., Astola, J. T., Moraga, C., Stanković, M., Gajić, D.
Number of pages: 8
Pages: 632-639
Publication date: 2015

Host publication information

Title of host publication: Computer Aided Systems Theory – EUROCAST 2015 : 15th International Conference, Las Palmas de Gran Canaria, Spain, February 8-13, 2015, Revised Selected Papers
Publisher: Springer
ISBN (Print): 978-3-319-27339-6
ISBN (Electronic): 978-3-319-27340-2

Publication series

Name: Lecture Notes in Computer Science
Volume: 9520
ISSN (Print): 0302-9743
ISSN (Electronic): 1611-3349
ASJC Scopus subject areas: Computer Science(all), Theoretical Computer Science
Keywords: Bent functions, Dyadic derivatives, GPU, Walsh functions
Source: Scopus
Source ID: 84952325470

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

Reliability and Perceived Value of Sentiment Analysis for Twitter Data

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Managing digital industrial transformation (mDIT), Industrial and Information Management, Research group: Business Data Research Group, Research group: Knowledge and Learning Research Center, University of Vaasa, University of Tampere
Contributors: Jussila, J., Vuori, V., Okkonen, J., Helander, N.
Pages: 43-48
Publication date: 3 Jun 2017

Host publication information

Title of host publication: 5th International Conference on Strategic Innovative Marketing, At Athens, Greece, : September 23-26, 2016
Publisher: Springer
Editors: Kavoura, A., Sakas, D., Tomaras, P.
ISBN (Electronic): 978-3-319-56288-9

Publication series

Name: Springer Proceedings in Business and Economics
ISSN (Print): 2198-7246

Bibliographical note

jufoid=84314
EXT="Vuori, Vilma"

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

Relevance of five generic business ideation approaches vis-a-vis contexts embedded within construction markets

In general, ideation encompasses the formation of ideas or mental images of things not present to the senses or simply the creation of new ideas. Business ideation is herein perceived to be the core area within future-oriented business management (BM). The main aim of the paper is to assess and advance the relevance of the five generic approaches to business ideation vis-à-vis
firms targeting contexts embedded within construction markets. A typology differentiates between the fitting, value-creating, profit generating, systemizing, and commercializing approaches. It is argued that each approach is, at minimum, highly relevant in the case of business unit (BU) management targeting preferred client investment and procurement behavior within construction markets. Approach 1 involves BUs aiming at fit between clients and their needs as well as units’ offerings and operations, respectively. Professional clients couple needs
with preferred procurement methods whereas competing BUs are trying to achieve best fit between solutions and client behaviors. This approach calls for research on how to sustain such fit between a BU and clients when changes occur. Approach 2 enables BUs to create value by specifying high-value propositions, producing value to clients, and capturing their fair shares of
produced values. Farsighted clients look for more or novel values for construction investments and, thus, units are collaborating and co-producing values to clients. This approach calls for research on a BU’s value co-production with such clients, value capture, and offerings integration. Approach 3 accommodates BUs that are focusing on generating profits, achieving
high-profit levels, and sustaining them. Pioneering clients pursue complex investment aims that can be met only by radical solutions. This approach calls for research on a BU’s profit-generating mechanisms related to clients with complex investment needs and radical solutions. Approach 4 facilitates BUs to systemize businesses around core ideas. Sectoral clients have large or complex needs and, in turn, units are satisfying them by engineering systems as wholes and delivering them as parts. This approach calls for research on BUs with systems and clients, multi-dimensional investments, and system engineering as wholes and parts. Approach 5 facilitates BUs to couple ideas with commercializing dimensions such as entrepreneurship, innovation, business development, venturing, or spin-offing. Risk-taking clients prefer to enter high-innovation contracts and, thus, units are offering novel solutions and emerging business
cases. This approach calls for research on a BU’s entrepreneurial competencies and risk-taking clients, wicked investment needs, and high-innovation contracts. In the same vein, the suggestions are put forth to CIB-related scholars for directing research on along the BM and ideation dimensions and adopting most relevant approaches. Likewise, management in firms and BUs competing in construction markets are encouraged to assess the business case-sensitive
relevance of each of Approaches 1-5 and try out those with initial high relevance.

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: Huovinen, P.
Number of pages: 12
Pages: 1129-1140
Publication date: 28 May 2016

Host publication information

Title of host publication: Proceedings of the CIB World Building Congress 2016, May 30 - June 3, 2016, Tampere, Finland : Advancing products and services
Volume: V
Place of publication: Tampere
Publisher: Tampere University of Technology. Department of Civil Engineering
Editor: Achour, N.
ISBN (Print): 978-952-15-3745-5
Keywords: Business ideation, business management, construction markets, literature review

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

Relations between civil engineering students’ approaches to learning, perceptions of the development of professional skills and perceived workload

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, Teaching and Learning Services, University of Helsinki
Contributors: Salmisto, A., Postareff, L., Nokelainen, P.
Publication date: 2016

Host publication information

Title of host publication: 44th Annual Conference of the European Society for Engineering Education SEFI2016: Proceedings : 12-15 September 2016, Tampere, Finland
ISBN (Print): 978-2-87352-014-4

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

Relational Capital for Shared Vision in Innovation Ecosystems

This paper provides a multiscopic view of the relationship profiles of businesses in three selected urban innovation ecosystems. With the Triple Helix framework, the ecosystem perspective and with shared vision for transformation initiatives, we explore relationships as structure in the metropolitan areas of Austin, TX, Minneapolis, MN, and Paris, France. Network metrics are interpreted as relationship indicators; and network visualizations reveal existing relationships and distinct patterns that structure the business ecosystems in each geographic area at the enterprise, growth and startup levels. We illustrate that relationship indicators and their visualization can be valuable resources for quantitatively and qualitatively understanding and analyzing the complexities of engagement, agility, structural cohesion, vitality, embeddedness, and linking factors in innovation ecosystems. Furthermore, these indicators highlight opportunities for the development of shared vision through interventions and network orchestration.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Department of Mathematics, Research group: MAT Intelligent Information Systems Laboratory
Contributors: Russell, M. G., Huhtamäki, J., Still, K., Rubens, N., Basole, R. C.
Number of pages: 36
Publication date: 2015
Peer-reviewed: Yes

Publication information

Journal: Triple Helix: A Journal of University-Industry-Government Innovation and Entrepreneurship
Volume: 2
Issue number: 1
ISSN (Print): 2197-1927
Original language: English
Keywords: Ecosystem, Networks, Innovation, Business, Metropolitan, Relationships, Visualization
Source: RIS
Source ID: urn:F38A9FE4A6D713DF7D7D6341B47D22C2

Research output: Contribution to journalArticleScientificpeer-review

Re-inventing organizational creativity and innovation through adopting a service-based working culture

By considering creativity to be a necessity for organisational competitiveness in today's rigorously changing working environments, this study seeks to examine whether adopting a service-based working culture could significantly improve organisational creativity and innovation. Grounded on the concepts of the Service-Dominant Logic and Complex Adaptive Systems, this research develops on understanding of the complexity of the emerging socially and digitally connected networks of individuals, teams and institutions. By introducing a novel framework for facilitating and improving the adaptability of a service-based working culture, this study offers both deliberation and practical advice for business organisations seeking valuable insight into how to develop and manage organisational creativity and innovation in increasingly digitalised service ecosystems. Specifically, the proposed framework encourages organisations to invest in the learning capacities and motivations of their employees.;

General information

Publication status: Published
MoE publication type: A3 Part of a book or another research book
Organisations: Industrial and Information Management
Contributors: Ketonen-Oksi, S.
Number of pages: 20
Pages: 1-20
Publication date: 28 Dec 2016

Host publication information

Title of host publication: Integrating Art and Creativity into Business Practice
Publisher: IGI Global
ISBN (Print): 9781522520504
ISBN (Electronic): 9781522520511
ASJC Scopus subject areas: Arts and Humanities(all), Economics, Econometrics and Finance(all), Business, Management and Accounting(all)

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

Reinventing organisational creativity and innovation through adapting a service-based working culture

General information

Publication status: Published
MoE publication type: A3 Part of a book or another research book
Organisations: Department of Information Management and Logistics
Contributors: Ketonen-Oksi, S.
Number of pages: 20
Pages: 1-20
Publication date: 2017

Host publication information

Title of host publication: Integrating arts and creativity into business practice
Publisher: IGI Global
Editors: Schiuma, G., Lerro, A.
ISBN (Electronic): 978-1-5225-2050-4

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

Reinforcement Corrosion Modelling in Renovation Strategy for Concrete Facades

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Civil Engineering, Research group: Service Life Engineering of Structures
Contributors: Köliö, A., Lahdensivu, J., Pentti, M.
Pages: 199-211
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the CIB World Building Congress 2016: Volume III - Building Up Business Operations and Their Logic. Shaping Materials and Technologies
Publisher: Tampere University of Technology. Department of Civil Engineering
ISBN (Electronic): 978-952-15-3743-1

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

Referenced backscattering compression level indicator based on passive UHF RFID tags

We establish a passive UHF RFID tag as a sensor with a referenced readout to compression. We introduce the sensor tag design, which is based on a two-part split ring resonator antenna, and present the compression sensor platform with a reference tag. We analyze the achieved wireless measurement results and evaluate the performance of the compression sensing platform. Based on these initial measurements, passive RFID-based sensors could provide a maintenance-free wirelessly readable option for compression sensing, for example for structural health monitoring.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Faculty of Biomedical Sciences and Engineering, Research group: Wireless Identification and Sensing Systems Research Group, BioMediTech
Contributors: Qureshi, S., Björninen, T., Virkki, J.
Number of pages: 3
Publication date: 26 Sep 2018

Host publication information

Title of host publication:  2018 IEEE International Conference on RFID Technology & Application (RFID-TA)
Publisher: IEEE
ISBN (Electronic): 978-1-5386-5057-8

Bibliographical note

JUFOID=72031

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

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

Recurrence network analysis of wide band oscillations of local field potentials from the primary motor cortex reveals rich dynamics.

Aggregate signals that reflect activities of a large number of neurons in the cerebral cortex, local field potentials (LFPs) have been observed to mediate gross functional activities of a relatively small volume of the brain tissues. There are several bands of the oscillations frequencies in LFPs that have been observed across multiple brain areas. The signature oscillation band of the LFPs in the primary motor cortex (MI) is over β range and it has been consistently observed both in human and non-human primates around the time of visual cues and movement onsets. However, its dynamical behavior has not been well characterized. Furthermore, dynamics of β oscillations has been documented based on the phase locking of β oscillations, but not in terms of the inherent dynamics of the oscillations themselves. Here, we used the complexity measure derived from cluster coefficients of a recurrence network and analyzed a pair of wide-band signals, one including β band of the LFPs and the other ranging the low γ band in MI recorded from a non-human primate. We show rather unique temporal profiles of the evoked responses using complexity of the dynamical behavior in both bands of the oscillation, either of which is not simply resembling either the power of the oscillation or the phase locking of β oscillations. Therefore, the current method can reveal a new type of dynamics of the underlying network complexity during the task simply based on event evoked potentials of wide-band oscillatory signals.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electronics and Communications Engineering, Research group: Computational Biophysics and Imaging Group, BioMediTech, Integrated Technologies for Tissue Engineering Research (ITTE), Department of Organismal Biology and Anatomy, University of Chicago
Contributors: Subramaniyam, N. P., Hyttinen, J., Hatsopoulos, N. G., Takahashi, K.
Number of pages: 4
Pages: 960-963
Publication date: 1 Jul 2015

Host publication information

Title of host publication: International IEEE/EMBS Conference on Neural Engineering, NER
Publisher: IEEE COMPUTER SOCIETY PRESS
ISBN (Print): 9781467363891
ASJC Scopus subject areas: Artificial Intelligence, Mechanical Engineering
Keywords: event evoked potentials, functional connectivity, Local field potentials, motor cortex, recurrence network, temporal dynamics
Source: Scopus
Source ID: 84940371617

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

Recognition of shading events caused by moving clouds and determination of shadow velocity from solar radiation measurements

Fast variability of solar radiation is the main cause of fluctuating photovoltaic (PV) power production and shadows caused by overpassing clouds are the main reason of such variability. Fast irradiance transitions caused by the edges of shadows can lead to situations where the grid inverter is not able to follow the global maximum power point (MPP) causing extra losses. Further, fast fluctuations of the power fed to the electric grid can cause, for example, power balance and quality problems. This paper presents a method to recognize shading events caused by moving clouds from measured irradiance data. The developed recognition method has been used to analyse shading events from 15 months of full-time irradiance recordings and the results of the analysis are presented. Further, the Linear Cloud Edge (LCE) method has been used to determinate velocities of the shadows.

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Department of Electrical Engineering, Research area: Power engineering
Contributors: Lappalainen, K., Valkealahti, S.
Number of pages: 6
Pages: 1568-1573
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

Recognising the culture context in information search

General information

Publication status: Published
MoE publication type: A4 Article in a conference publication
Organisations: Pori Department, Research group: Software Engineering and Intelligent Systems, Christian-Albrechts-University Kiel
Contributors: Jaakkola, H., Thalheim, B.
Number of pages: 9
Pages: 167-185
Publication date: 2016

Host publication information

Title of host publication: Proceedings of the 26th International Conference on Information Modelling and Knowledge Bases - EJC 2016. : June 6-10, 2016, Tampere, Finland.
Volume: 18
Place of publication: Tampere
Publisher: Tampere University of Technology Pori Department
Editors: Jaakkola, H., Thalheim, B., Kiyoki, Y., Yoshida, N.
ISBN (Electronic): 978-952-15-3747-9

Publication series

Name: Tampere University of Technology Pori Department Publications
No.: 18
ISSN (Electronic):