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  • 2501. Vilkkumaa, Eeva
    et al.
    Salo, Ahti
    Liesio, Juuso
    Siddiqui, Afzal
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap. University College London, UK.
    Fostering breakthrough technologies - How do optimal funding decisions depend on evaluation accuracy?2015Inngår i: Technological forecasting & social change, ISSN 0040-1625, E-ISSN 1873-5509, Vol. 96, s. 173-190Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    There is a growing interest in fostering breakthrough technologies that offer exceptionally high value to society. However, when starting technology projects, it is impossible to know which of them have the potential to lead to breakthroughs. Therefore, organizations have adopted funding policies in which on-going projects are subjected to interim evaluations based on which some projects may be abandoned to release resources for seizing new opportunities. In this paper, we study which funding policies are optimal when the objective is either (i) to maximize the expected value of the project portfolio, or (ii) to maximize the expected number of exceptionally excellent projects that may lead to breakthrough technologies. We show that the optimal policy for funding exceptionally excellent projects is to start a large number of projects and abandon a high proportion of them later, whereas the optimal policy for maximizing the expected value of the project portfolio is to grant long-term funding to a smaller set of projects based on initial evaluation. Furthermore, we show how the trade-off between these two objectives depends on the initial project evaluation accuracy and the rate at which this accuracy improves. Our results suggest that this trade-off is particularly significant when the initial project evaluations are very uncertain but become more accurate soon after the projects have been launched. In such a setting, policies that seek to maximize the expected portfolio value may fail to promote breakthrough technologies.

  • 2502. Virasjoki, Vilma
    et al.
    Rocha, Paula
    Siddiqui, Afzal S.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap. University College London, U.K..
    Salo, Ahti
    Market Impacts of Energy Storage in a Transmission-Constrained Power System2016Inngår i: IEEE Transactions on Power Systems, ISSN 0885-8950, E-ISSN 1558-0679, Vol. 31, nr 5, s. 4108-4117Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Environmental concerns have motivated governments in the European Union and elsewhere to set ambitious targets for generation from renewable energy (RE) technologies and to offer subsidies for their adoption along with priority grid access. However, because RE technologies like solar and wind power are intermittent, their penetration places greater strain on existing conventional power plants that need to ramp up more often. In turn, energy storage technologies, e.g., pumped hydro storage or compressed air storage, are proposed to offset the intermittency of RE technologies and to facilitate their integration into the grid. We assess the economic and environmental consequences of storage via a complementarity model of a stylized Western European power system with market power, representation of the transmission grid, and uncertainty in RE output. Although storage helps to reduce congestion and ramping costs, it may actually increase greenhouse gas emissions from conventional power plants in a perfectly competitive setting. Conversely, strategic use of storage by producers renders it less effective at curbing both congestion and ramping costs, while having no net overall impact on emissions.

  • 2503. Vitak, Jessica
    et al.
    Wisniewski, Pamela
    Page, Xinru
    Lampinen, Airi
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Litt, Eden
    De Wolf, Ralf
    Gage Kelley, Patrick
    Sleeper, Manya
    The Future of Networked Privacy: Challenges and Opportunities2015Inngår i: CSCW'15, the 18th ACM Conference Computer Supported Cooperative Work & Social Computing, ACM Press , 2015Konferansepaper (Annet vitenskapelig)
  • 2504. Višković, Verena
    et al.
    Chen, Yihsu
    Siddiqui, Afzal S.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap. University College London, United Kingdom; HEC Montréal, Canada.
    Implications of the EU Emissions Trading System for the South-East Europe Regional Electricity Market2017Inngår i: Energy Economics, ISSN 0140-9883, E-ISSN 1873-6181, Vol. 65, s. 251-261Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    As part of its climate policy, the European Union (EU) aims to reduce greenhouse gas (GHG) emissions levels by 20% by the year 2020 compared to 1990 levels. Although the EU is projected to reach this goal, its achievement of objectives under its Emissions Trading System (ETS) may be delayed by carbon leakage, which is defined as a situation in which the reduction in emissions in the ETS region is partially offset by an increase in carbon emissions in the non-ETS regions. We study the interaction between emissions and hydropower availability in order to estimate the magnitude of carbon leakage in the South-East Europe Regional Electricity Market (SEE-REM) via a bottom-up partial equilibrium framework. We find that 6.3% to 40.5% of the emissions reduction achieved in the ETS part of SEE-REM could be leaked to the non-ETS part depending on the price of allowances. Somewhat surprisingly, greater hydropower availability may increase emissions in the ETS part of SEE-REM. However, carbon leakage might be limited by demand response to higher electricity prices in the non-ETS area of SEE-REM. Such carbon leakage can affect both the competitiveness of producers in ETS member countries on the periphery of the ETS and the achievement of EU targets for CO2 emissions reduction. Meanwhile, higher non-ETS electricity prices imply that the current policy can have undesirable outcomes for consumers in non-ETS countries, while non-ETS producers would experience an increase in their profits due to higher power prices as well as exports. The presence of carbon leakage in SEE-REM suggests that current EU policy might become more effective when it is expanded to cover more countries in the future.

  • 2505. Vogginger, Bernhard
    et al.
    Schueffny, Rene
    Lansner, Anders
    Stockholms universitet, Naturvetenskapliga fakulteten, Numerisk analys och datalogi (NADA). Royal Institute of Technology (KTH), Sweden.
    Cederström, Love
    Partzsch, Johannes
    Hoeppner, Sebastian
    Reducing the computational footprint for real-time BCPNN learning2015Inngår i: Frontiers in Neuroscience, ISSN 1662-4548, E-ISSN 1662-453X, Vol. 9, artikkel-id 2Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The implementation of synaptic plasticity in neural simulation or neuromorphic hardware is usually very resource-intensive, often requiring a compromise between efficiency and flexibility. A versatile, but computationally-expensive plasticity mechanism is provided by the Bayesian Confidence Propagation Neural Network (BCPNN) paradigm. Building upon Bayesian statistics, and having clear links to biological plasticity processes, the BCPNN learning rule has been applied in many fields, ranging from data classification, associative memory, reward-based learning, probabilistic inference to cortical attractor memory networks. In the spike-based version of this learning rule the pre-, postsynaptic and coincident activity is traced in three low-pass-filtering stages, requiring a total of eight state variables, whose dynamics are typically simulated with the fixed step size Euler method. We derive analytic solutions allowing an efficient event-driven implementation of this learning rule. Further speedup is achieved by first rewriting the model which reduces the number of basic arithmetic operations per update to one half, and second by using look-up tables for the frequently calculated exponential decay. Ultimately, in a typical use case, the simulation using our approach is more than one order of magnitude faster than with the fixed step size Euler method. Aiming for a small memory footprint per BCPNN synapse, we also evaluate the use of fixed-point numbers for the state variables, and assess the number of bits required to achieve same or better accuracy than with the conventional explicit Euler method. All of this will allow a real-time simulation of a reduced cortex model based on BCPNN in high performance computing. More important, with the analytic solution at hand and due to the reduced memory bandwidth, the learning rule can be efficiently implemented in dedicated or existing digital neuromorphic hardware.

  • 2506. Void, Tone
    et al.
    Marzo, Richard
    Waern, Annika
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Play Style Survey2009Inngår i: Real-Time research: an experiment in the design of scholarship / [ed] S. Dikkers, C. Steinkuhler, K. Squire, and E. Zimmerman, Pittsburgh: ETC Press, 2009Kapittel i bok, del av antologi (Annet vitenskapelig)
  • 2507. Volodina, Elena
    et al.
    Grigonyté, GintaréStockholms universitet, Humanistiska fakulteten, Institutionen för lingvistik, Avdelningen för datorlingvistik.Pilán, IldikóNilsson Björkenstam, KristinaStockholms universitet, Humanistiska fakulteten, Institutionen för lingvistik, Avdelningen för datorlingvistik.Borin, Lars
    Proceedings of the joint workshop on NLP for Computer Assisted Language Learning and NLP for Language Acquisition at SLTC: Umeå 16th November 20162016Konferanseproceedings (Fagfellevurdert)
  • 2508. Volodina, Elena
    et al.
    Pilán, IldikóBorin, LarsGintare, GrigonyteStockholms universitet, Humanistiska fakulteten, Institutionen för lingvistik, Avdelningen för datorlingvistik.Nilsson Björkenstam, KristinaStockholms universitet, Humanistiska fakulteten, Institutionen för lingvistik, Avdelningen för datorlingvistik.
    Proceedings of the Joint 6th Workshop on NLP for Computer Assisted Language Learning and 2nd Workshop on NLP for Research on Language Acquisition2017Konferanseproceedings (Fagfellevurdert)
    Abstract [en]

    For the second year in a row we brought two related themes of NLP for Computer-Assisted Language Learning and NLP for Language Acquisition together. The goal of organizing joint workshops is to provide a meeting place for researchers working on language learning issues including both empirical and experimental studies and NLP-based applications. The resulting volume covers a variety of topics from the two fields and - hopefully - showcases the challenges and achievements in the field.

    The seven papers in this volume cover native language identification in learner writings, using syntactic complexity development in language learner language to identify reading comprehension texts of appropriate level, exploring the potential of parallel corpora to predict mother-language specific problem areas for learners of another language, tools for learning languages - both well-resourced ones such as English as well as endangered or under-resourced ones such as Yakut and Võro, as well as exploring the potential of automatically identifying and correcting word-level errors in Swedish learner writing.

  • 2509. Vorontsova, Anna
    et al.
    Rusu, Lazar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Determinants of IT Outsourcing Relationships: a Recipient - Provider Perspective2014Inngår i: CENTERIS - Conference on ENTERprise Information Systems / [ed] João Varajão, Amsterdam: Elsevier, 2014, s. 588-597Konferansepaper (Fagfellevurdert)
  • 2510.
    Värlander, Sara
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Företagsekonomiska institutionen, Marknadsföring.
    Julien, Anne
    The effect of the Internet on front-line employee skills: exploring banking in Sweden and France2010Inngår i: Service Industries Journal, ISSN 0264-2069, E-ISSN 1743-9507, Vol. 30, nr 8, s. 1245-1261Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper aims to explore (1) the Internet effects on the nature of the face-to-face service encounter and (2) what demands this introduces on front-line service employee skills in a banking context. The paper draws on empirical data generated from two banks in Sweden and France, where in-depth interviews with 21 managers have been carried out. The paper argues that in light of the Internet, the face-to-face service encounter is becoming increasingly interactive and customized, where much attention is paid towards building and maintaining relationships with customers, providing advice and support in customer's decision making, and also, learning from and acquiring qualitative information about the customer. This up-scaling of the face-to-face service encounter entails an increase in job complexity and task discretion, involving demands for high-level skills such as information provisioning and evaluation, and emotional skills such as empathy, interpretive skills, conversational skills, and management of body language.

  • 2511. Väätäjä, Heli
    et al.
    Majaranta, Päivi
    Törnqvist, Heini
    Ainasoja, Mari
    Surakka, Veikko
    Juhlin, Oskar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Mancini, Clara
    Technology for Bonding in Human-Animal Interaction2017Inngår i: Proceedings of the Fourth International Conference on Animal-Computer Interaction, Association for Computing Machinery (ACM), 2017, artikkel-id 20Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This workshop focuses on the use and influence of technology on human-animal bonding, and how to facilitate them with technology. We explore the elements and characteristics of human-animal bonding, and how technology is connected to emotions and bonding between the human and the animal. We are particularly interested in animal's experiences, emotions, and welfare in bonding. The workshop facilitates discussion, creates a framework to support design activities, identifies future research themes, and creates ideas on facilitating the mutual bonding in human-animal interaction. The main focus is on dogs, but workshop aims is to pave way for further investigations and research with other domestic animals, such as cats, horses, and rabbits.

  • 2512. Våge, Lars
    et al.
    Dalianis, Hercules
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Iselid, Lars
    Informationssökning på Internet2008 (oppl. 2. [utök.] uppl.)Bok (Annet vitenskapelig)
  • 2513.
    Wadden, Tom
    Stockholms universitet, Naturvetenskapliga fakulteten, Numerisk analys och datalogi (NADA), (tills m KTH).
    Neural control of locomotion in biological and robotic systems1998Doktoravhandling, med artikler (Annet vitenskapelig)
  • 2514.
    Waern, Annika
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    I'm in love with someone who doesn't even exist! Bleed in the context of a computer game2010Inngår i: Nordic DIGRA conference, 2010Konferansepaper (Annet vitenskapelig)
    Abstract [en]
    It is not unusual for computer games to include romance, but most games treat romance as a narrative theme rather than as an integrated part of gameplay. In this article I investigate the gameplay experience in the game Dragon Age, a single-player game that allows players to actively engage in romance. Based on an investigation of blog and community comments, we argue that this sometimes will create an experience that is similar to the “bleed” effect in non-computerised role-play, and that the player to some extent shares emotions with his or her character.
  • 2515.
    Waern, Annika
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Framing Games2012Inngår i: Proceedings of 2012 DiGRA Nordic Conference: Local and Global – Games in Culture and Society, Digital Games Research Association , 2012Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In this article, I revisit the everlasting question of what constitutes a game. My purpose is to arrive at a permissive definition that can serve to bridge digital and non-digital game studies. The way I approach the issue is through eliciting the qualities of games for which I believe game studies provides appropriate tools. The article centres on the idea that games are systems, which have been designed to be played or evolved within a play practice. I use previous literature to carefully examine what is required from a game system, as well as what signifies play in relationship to other human activities. The strength of game studies is that it has developed ways to understand how these two aspects are interrelated - how play is shaped by systems, and how systems need to be constructed to support play.

  • 2516.
    Waern, Annika
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    I'm in love with someone who doesn't exist!: Bleed in the context of a computer game2011Inngår i: Journal of Gaming & Virtual Worlds, ISSN 1757-191X, E-ISSN 1757-1928, Vol. 3, nr 3, s. 239-257Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [sv]

    Det är inte ovanligt att datorspel innehåller romantiska element, men det är ovanligt att datorspel får folk att reagera med romantiska känslor. I den här artikeln undersöker jag den romantiska upplevelsen i spelet Dragon Age. Med utgångspunkt i en samling blog- och community kommentarer argumenterar jag för att spelet skapar en 'bleed' effekt: på så sätt att en del spelare förälskar sig i de karaktärer som de utvecklat en romans med i spelet. Artikeln identifierar vissa nyckelaspekter i hur spelets design bidrar till effekten. Utöver berättelsestrukturer och design av spelets karaktärer visar jag hur spelarnas egen önskan att skapa en 'säker zon' för romantiska upplevelser och hur spelarens självprojektion bidrar till effekten.

  • 2517.
    Waern, Annika
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Balan, Elena
    Nevelsteen, Kim
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Athletes and street acrobats: designing for play as a community value in parkour2012Inngår i: CHI '12 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, New York: Association for Computing Machinery (ACM), 2012, s. 869-878Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Participatory design methods face challenges when designing for a widespread youth community. In such projects, it is not enough to design in collaboration with a few selected individuals; one must also strive to understand the community at a deeper level and incorporate its values and practices into the design solution. We report on our process of designing with, and for, an identified youth group: the Parkour and Freerunning community. We show how the successful design relied not only on employing methods of participatory observation and participatory design, but also on acquiring an understanding of the practice as a ‘fun community’, valuing play over achievement and competition.

  • 2518.
    Waern, Annika
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Magnusson, Charlotte
    CERTEC, , .
    Rassmus-Gröhn, K
    CERTEC, , .
    Bjernryd, Å
    CERTEC, , .
    Bernhardsson, H
    CERTEC, , .
    Jakobsson, A
    CERTEC, , .
    Salo, J
    Do-Fi, , .
    Wallon, M
    Hjälpmedelscentralen, , .
    Hedvall, P.O.
    CERTEC, , .
    Navigating the world and learning to like it: Mobility training through a pervasive game2011Konferansepaper (Fagfellevurdert)
    Abstract [sv]

    Artikeln introducerar tanken att platsberoende ubika spel kan användas för att göra mobilitetsträning för synskadade barn roligare. Vi beskriver en användarcentrerad utvecklingsprocess som har utförts i samarbete både med synskadade barn och rehabiliteringspersonal. Vi presenterar ett nytt spelkoncept som kombinerar platsberoende spel, ljudspår, och gestbaserad interaktion. Vi rapporterar ochdiskuterar erfarenheterna från utvecklingsarbetet och föreslår riktlinjer för design för denna typ av spel.

  • 2519.
    Wahlgren, Gunnar
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Bencherifa, Khalid
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kowalski, Stewart
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    A Framework for selecting IT Security Risk Management Methods based on ISO270052013Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The ISO27005 is an international standard that gives recommendation on IT Security Risk Management Methods. In this short paper we outline a criteria framework to analysis 7 of the major IT security risk methodology used. This framework can be used by organizations to select the appropriated methodology to fit their organizations risk posture and risk environment.

  • 2520.
    Wahlgren, Gunnar
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Fedotova, Anna
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Musaeva, Alexandra
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kowalski, Stewart
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    IT Security Incidents Escalation in the Swedish financial sector: A Maturity Model Study2016Inngår i: Proceedings of the Tenth International Symposium on Human Aspects of Information Security & Assurance (HAISA 2016) / [ed] Nathan L. Clarke, Steven M. Furnell, Plymouth University , 2016, s. 45-55Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper reports the primary results of a design science research study to deal with the problem of IT security escalation in Swedish government and private organizations. A maturity capability escalation model was used to perform evaluations of two of Sweden's four largest banks. The evaluation indicated that banks were aligned with the current Swedish regulations minimal requirements for IT security incident handling and where on a level 3 of a 5 level model.

  • 2521.
    Wahlgren, Gunnar
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kowalski, Stewart
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    A Maturity Model for Measuring Organizations Escalation Capability of IT-related Security Incidents in Sweden2016Inngår i: Workshop on Information Security and Privacy (WISP) 2016: Proceedings, Association for Information Systems, 2016, Vol. 8Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Managing IT-related security incidents are a growing important issue facing the organizations in IT security risk management. We have used design science approach to develop an artifact to measure different organizations capabilities and maturity to handle IT-related security incidents. In this paper, we present how we have tested and will test the artifact on several different Swedish organizations. The participating organizations come from both the private and public sectors and all organizations handle critical infrastructure which can be damaged if an IT-related security incident occurs. Organizations had the opportunity to evaluating the actual model itself but also to test the model by calculating the organization's escalation capability using a query package for self-assessment. In this paper, we present the results of the self-assessment which indicate an overall low level of maturity in Sweden. The most remarkable result was only 20% of the participating organizations in the study had "Knowledge and Education" maturity above the lowest levels.

  • 2522.
    Wahlgren, Gunnar
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kowalski, Stewart
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Evaluation of Escalation Maturity Model for IT Security Risk Management: a design Science Work in Progress2014Inngår i: 2014 Dewald Roode Worksshop on Information System Security Research: conference proceedings / [ed] Anthony Vance, Laxenburg: IFIP , 2014, s. -22Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In this early stage paper we present a draft of an IT Security Risk Escalation Capability Maturity Model. This model is used to develop a new approach to IT Security Risk Management where IT Security Risk Management is placed as a recurring activity at all levels of the organization including the strategic, tactical and operational levels. To construct this model we combined ISO 27005 framework for IT Security Risk Management with NIST Multitier framework and take elements from the ISAC IT Risk framework. We end our paper with an outline of our current plans to evaluate this escalation maturity model by using expert groups to rank outcomes of response to similar IT incidents by different organization that have been ranked according to this maturity model. In this way we hope to establish if there are correlations as to the maturity level of an organization and how well it responds to an IT incident.

  • 2523.
    Wahlgren, Gunnar
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kowalski, Stewart
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    IT Security Risk Management Model for Cloud Computing: a Need for a New Escalation Approach2013Inngår i: International Journal of E-Entrepreneurship and Innovation, ISSN 1947-8585, Vol. 4, nr 4, s. 1-19Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We combined ISO 27005 framework for IT Security Risk Management with NIST Multitier framework. With this combined framework we create a new approach to IT Security Risk Management where IT Security Risk Management is place at the strategic, tactical and operational levels of an organizational. In this paper we concentrate on the monitoring and communication steps of IT Security Risk Management and especially escalation of new IT Security Incidents. We present a first draft to an IT Security Risk Escalation Capability Maturity Model based on ISACA´s Risk IT Framework. Finally we apply the approach to typical cloud computing environment as a first step to evaluate this new approach.

  • 2524.
    Wahlgren, Gunnar
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kowalski, Stewart
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    IT Security Risk Management Model for Cloud Computing: A Need for a New Escalation Approach2013Konferansepaper (Fagfellevurdert)
    Abstract [en]

    We combined ISO 27005 framework for IT Security Risk Management with NIST Multitier framework and we claim that IT Security Risk Management framework exist at each organizational levels. In this paper we concentrate on the monitoring and communication steps of IT Security Risk Management and especially escalation of new IT Security Incidents. We present a first draft to an IT Security Risk Escalation Capability Maturity Model based on ISACA´s Risk IT Framework. Finally we will use our approach in a cloud computing environment as we believe that it is necessary to react fast on incident and therefore a need to have a well-documented and communicated monitoring and escalation processes between different organizational levels.

  • 2525.
    Wallin, Erik
    et al.
    KTH.
    Persson, Christian
    Media Technology and Graphic Arts, Royal Institute of Technology (KTH).
    Using autonomous agents in Internet marketing: A discussion on subjective product characteristics in agent assisted trade1998Inngår i: Technologies for the Information Society: Developments and Opportunities / [ed] Roger, J. Y., Stanford-Smith, B., Kidd, P.T., Amsterdam: IOS Press, 1998, s. 225-232Konferansepaper (Fagfellevurdert)
    Abstract [en]

    An important issue in Internet marketing is the possibility of designing autonomous agents that are able to interpret subjective values in goods and services. From the customer's point of view, it is important to evaluate all aspects linked to the product before purchasing, not only easily identified objective parameters such as price. From a marketing perspective, the building of a brand is probably the most efficient way to distinguish a product from those of the competitors. It is therefore important for both customers and marketers to design agents that are able to interpret certain subjective product characteristics when searching for products or services on the Internet. This paper outlines a generic model of an autonomous agent Internet marketing system with a discussion on the possibilities of handling subjective product characteristics. 

  • 2526.
    Wallin, Erik
    et al.
    KTH.
    Persson, Christian
    Media Technology and Graphic Arts, Royal Institute of Technology (KTH).
    Lennstrand, Bo
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Företagsekonomiska institutionen.
    Web Metrics – Design Specifications of  Web-based System for Personalization with "Bifurcation"2000Inngår i: 2000 Proceedings / [ed] Holub, R.A., New York: TAGA office, Rochester , 2000, s. 67-87Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper describes a personalization system aiming at one-to-one marketing with the ability to support real-time identification, selection, and content creation where the interaction is performed on a web-based e-commerce platform. The personalization system is capable of controlling and presenting the web site in different shapes to different consumers – controlled bifurcation.  When combined with the tracking of the visitor’s site movements, detailed consumer behavior patterns can be established.

    One important means has been to create a system that can later on be used in consumer behavior research.  The bifurcation capability means that the system can be used to test the impact of different layouts of the web site – or of different sales offerings – in the same way direct marketing methods work.  This system will be able to present different layouts of the site or offerings to randomized groups of visitors.  Their responses, in the form of movements within the site, purchase frequencies, etc., can then be measured by the system.

  • 2527.
    Walters, Jamie
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Distributed Immersive Participation: Realising Multi-Criteria Context-Centric Relationships on an Internet of Things2014Doktoravhandling, monografi (Annet vitenskapelig)
    Abstract [en]

    Advances in Internet-of-Things integrate sensors and actuators in everyday items or even people transforming our society at an accelerated pace. This occurs in areas such as agriculture, logistics, transport, healthcare, and smart cities and has created new ways to interact with and experience entertainment, (serious) games, education, etc. Common to these domains is the challenge to realize and maintain complex relations with any object or individual globally, with the requirement for immediacy in maintaining relations of varying complexity. Existing architectures for maintaining relations on the Internet, e.g., DNS and search engines are insufficient in meeting these challenges. Their deficiencies mandate the research presented in this dissertation enabling the maintenance of dynamic and multi-criteria relationships among entities in real-time in an Internet-of-Things while minimizing the overall cost for maintaining such context-centric relationships. A second challenge is the need to represent nearness in context-centric relationships, since solutions need to build on what is closely related.

    The dissertation shows that the proximity on relations can be used to bring about the scalability of maintaining relationships across the IoT. It successfully demonstrates the concept and feasibility of self-organizing context-centric overlay networks for maintaining scalable and real-time relationships between endpoints co-located with associated physical entities. This is complemented by an object model for annotating objects and their relationships as derived and defined over the underpinning context interactions. Complementing measures of nearness are added through a non-metric multi-criteria approach to evaluating the notion of context proximity. A query language and an extension to the publish-subscribe approaches achieves distributed support for discovering such relationships; locating entities relative to a defined hyper-sphere of interest. Furthermore, it introduces adaptive algorithms for maintaining such relationships at minimal overall costs. The results demonstrate the feasibility of moving towards context-centric approaches to immersion and that such approaches are realizable over vast and distributed heterogeneous collections of user and their associated context information.

  • 2528.
    Walters, Jamie
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap. Mid Sweden University.
    Kanter, Theo
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    A Context-Relational Approach for the Internet of Things2012Inngår i: EMERGING 2012, The Fourth International Conference on Emerging Network Intelligence / [ed] Michael D. Logothetis, Tulin Atmaca, International Academy, Research and Industry Association (IARIA), 2012, s. 49-55Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Context-centric applications and services are premised on the ability to readily respond to changes in context. Centralized approaches to enabling this are undermined by their dependencies on DNS naming services while decentralized approaches using DHT variants have been centred on the provisioning of the underlying context information, creating information-centric rather than context-centric solutions. A dynamic Internet of Things mandates a new paradigm; approaches storing, discovering and associating context entities relevant to their context state. In this paper, we explore such a paradigm, and with the implementation of a prototype, show the advantages of moving towards the notion of context-state centricity on the Internet of Things.

  • 2529. Walters, Jamie
    et al.
    Kanter, Theo
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Evolving Presentity-Based Context Schemas by Estimating Context Proximity2011Konferansepaper (Fagfellevurdert)
  • 2530. Walters, Jamie
    et al.
    Kanter, Theo
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Norling, Roger
    Distributed Context Models in Support of Ubiquitous Mobile Awareness Services2010Konferansepaper (Fagfellevurdert)
  • 2531.
    Walters, Jamie
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kanter, Theo
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rahmani, Rahim
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    A Relational Context Proximity Query Language2015Inngår i: Mobile Networks and Management: Revised Selected Papers / [ed] Ramón Agüero et al., Berlin: Springer, 2015, nr 1, s. 277-289Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The creation of applications and services realising massive immersive participation require the provisioning of current, relevant and accurate context information. These applications benefit from access to this highly dynamic information in real time. Existing approaches to provisioning context information are limited by their interpretation of context relationships as address book solutions thus limiting the discovering of related entities. We introduce the context proximity query language (CPQL) for querying context related entities on distributed across collections of remote endpoints. As a declarative query language (CPQL) is similar in structure to SQL and describes the relationships between entities as distance functions between their associated context information. We simulate CPQL and show that it offers improvements over existing approaches while scaling well.

  • 2532.
    Walters, Jamie
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kanter, Theo
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rahmani, Rahim
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Adaptive Information Provisioning in Distributed Context Centric Architectures2014Inngår i: International Journal of Computer Science Issues, ISSN 1694-0784, E-ISSN 1694-0814, Vol. 11, nr 4, s. 10-21Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The provisioning of user context information between service endpoints is central to realizing massive immersive participation on an Internet of Things. This information must in turn be provisioned to endpoints with minimal overhead costs. Where this is achieved through centralized repositories of context information there arises issues of scalability and availability. Where distributed approaches have been proposed, information dissemination has been optimized relative to the underlying network properties. In this paper we extend the Distributed Context Protocol (DCXP) to support subscriptions relative to an entity-application-entity triple, minimizing the number of subscriptions required and through application specific optimization minimize the overall cost of delivering user context information to service endpoints.

  • 2533.
    Walters, Jamie
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kanter, Theo
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rahmani, Rahim
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Establishing Multi-Criteria Context Relations Supporting Ubiquitous Immersive Participation2013Inngår i: International Journal of Ad Hoc, Sensor & Ubiquitous Computing, ISSN 0976-2205, E-ISSN 0976-1764, Vol. 4, nr 2, s. 59-78Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Immersive Participationentails massive participatory activities in the Internetengaging people, places and objects. This ispremised on the existence of an Internet of Things infrastructure supporting applications and services with the same richness of experience as the World Wide Web. This in turn presupposes the existence of models for establishing and maintaining context relations. Where these models do exist, they impose a limited interpretation of context relations in the presence of the inherent heterogeneous and dynamic characteristics of the supporting information. In this paper we introduce an approach towards establishing context relations through the use of an improved context relational model permitting a wider, more complete range of application specific scenarios. Additionally, wederive a measure of context proximity that considers the situation, attributes, relations, accuracy and heterogeneity of both the underlying information and the vast array of requirements for metrics supporting application problem domains

  • 2534.
    Walters, Jamie
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kanter, Theo
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rahmani, Rahim
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Supporting Context-Centric Relationships in Heterogeneous Environments2013Inngår i: International Journal of Computer Science Issues, ISSN 1694-0784, E-ISSN 1694-0814, Vol. 10, nr 5, s. 25-34Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Massive Immersive Participation is enriched through the use of context information describing the dynamic states and relations among people places and things. This in turn mandates the creation of methods and models for establishing and supporting these relationships. Previous approaches are undermined by their limited interpretation of context centric relations and subsequently do not offer support for multi-criteria relationships. In this paper, we extend on our previous work on establishing multi-criteria context relationships, to adding the support required for maintaining these relationships over heterogeneous and dynamic context information. We introduce a query language that supports an extended publish-subscribe approach and define solutions for maintaining, evaluating and adjusting these relationships while minimizing overall costs.

  • 2535. Walters, Jamie
    et al.
    Kanter, Theo
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Savioli, Enrico
    A Distributed Framework for Organizing an Internet of Things2011Inngår i: The 3rd International ICST Conference on Mobile Lightweight Wireless Systems, 2011Konferansepaper (Fagfellevurdert)
  • 2536.
    Wang, Jinyi
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Crafting Movement: Moving Image Collections for Interaction Design2018Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    This thesis conceptualises, investigates, and reflects on the moving image design space in Human-Computer Interaction (HCI). Motivated by the increasing number of videos, films, and animations produced in the field, the thesis recognizes moving image making as a designerly way of inquiry across research and practice, and argues for the importance of moving image as a research topic in interaction design. 

    The first contribution of this thesis is the conceptualization of the moving image design space. The growing body of moving images, varying in forms and purposes, can be held together to establish a foundation of knowledge that informs and generates new research and practice. We identify four collections of existing works and their different roles, namely moving image as design technique, design element, design exhibit, and design promotion. The second contribution is the manifestation of moving image making through concrete design studies. These exemplars empirically demonstrate how they investigate, enrich, and challenge the four established collections, and ultimately expand the moving image design space. 

    These contributions not only provide new knowledge on moving images for better understanding their various roles in interaction design and making works that respond to emerging design opportunities, but also foreground the discussion on the mediation aspect of moving image in HCI.

  • 2537.
    Wang, Jinyi
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Exploring the Alternative Means to Communicate Interaction Design Research2014Inngår i: DIS Companion '14 - Proceedings of the 2014 companion publication on Designing interactive systems, New York: ACM Digital Library, 2014, s. 157-162Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    This paper describes the author's doctoral study that intends to explore alternative means to communicate interactions design research with focus on the communication of hybrid interactions. This exploration is realized by proposing and validating different approaches in various design cases. The processes and outcomes contribute to the ongoing discussion in the interaction design community on bridging the gap between research and design, in particular, in designing hybrid interactive systems.

  • 2538.
    Wang, Jinyi
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Hughes, Nathan
    Object2016Konferansepaper (Annet vitenskapelig)
  • 2539.
    Wang, Jinyi
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Juhlin, Oskar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Banka Johnson, Eva-Carin
    Previsualization with Computer Animation (Previs): Communicating Research to Interaction Design Practice2014Inngår i: Proceedings of the 26th Australian Computer-Human Interaction Conference on Designing Futures: the Future of Design, Association for Computing Machinery (ACM), 2014, s. 11-20Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In recent years there has been growing concern about a gap between HCI research and industrial practitioners. We review methods proposed in HCI for enhancing communication between researchers and designers, and propose previsualization animation, borrowed from the movie industry, as an additional means to support this communication. The potential benefit is investigated through a process of designing and producing an animated film for a design research project at a furniture company and gathering initial user feedback. We argue that a technique that accounts for interaction dynamics and provisionality and that supports brevity and mobility can communicate design research in an inspirational manner to practitioners. However we also identified a remaining difference in the two groups' expectations about the animation, with researchers wanting it to be more research-like and practitioners wanting it to be more production-oriented.

  • 2540.
    Wang, Jinyi
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Juhlin, Oskar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Blomgren, Erika
    Bågander, Linnea
    Kägo, Evelin
    Meier, Florian
    Takahashi, Mariko
    Thornquist, Clemens
    Design space of the new materials for fashionable wearables2016Inngår i: Proceedings of the 18th International Conference on Human-Computer Interaction with Mobile Devices and Services Adjunct, Association for Computing Machinery (ACM), 2016, s. 1159-1162Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper presents a design workshop that explores the future of fashionable wearable technology focusing on aesthetics. The results of the workshop include four fashion design concepts and the implications emerged from the discussions on each concept during the workshop. These implications open up new design space of technologies and materials that account for aesthetics beyond traditional fabric, i.e. transparency, scale, irregularity, movement, contextual expressions and fashion intelligence.

  • 2541.
    Wang, Jinyi
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Juhlin, Oskar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Hughes, Nathan
    Fashion Film as Design Fiction for Wearable Concepts2017Inngår i: Proceedings of the 2017 CHI Conference Extended Abstracts on Human Factors in Computing Systems, Association for Computing Machinery (ACM), 2017, s. 461-461Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    This video presents a design fiction in the form of a fashion film. It intends to mediate a design concept for a smartwatch that can change its colors and patterns to fit in the wearer's dress ensemble, which has been reported previously [1]. We see an increased interest in HCI to design fashionable wearables. However, visually appealing designs are not necessarily considered fashionable. We are motivated by the fundamental role of fashion media in transforming clothing items into fashionable garments. Fashion film, as one of the most important fashion media in the industry today, has the potential to represent wearable design concepts and to speak to a fashion-oriented audience within and beyond HCI.

  • 2542.
    Wang, Jinyi
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Karlström, Petter
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Mobility and multi-modality: An exploratory study of tablet use in interaction design learning2012Inngår i: / [ed] M. Specht, M. Sharples J. Multisilta, 2012, s. 276-279Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Tablet computers contain affordances that could make them particularly useful for students in interaction design. However, there is a lack of research and guidelines on how to integrate mobile tablets in learning. In this paper, we aim to gain understanding on the use of tablets in interaction design education by conducting a case study in an undergraduate class in interaction design. We frame our results in five features of mobile devices. Mobility and multi-modality stood out as the most distinct features of tablets in interaction design education.

  • 2543.
    Wang, Jinyi
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Mughal, Mudassar Ahmad
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    LiveNature: Connecting People with Their Cherished Places2014Inngår i: Proceedings of the 2014 Companion Publication on Designing Interactive Systems, Vancouver: ACM Digital Library, 2014, s. 113-116Konferansepaper (Annet vitenskapelig)
  • 2544.
    Wang, Jinyi
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Mughal, Mudassar Ahmad
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Juhlin, Oskar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Experiencing Liveness of a Cherished Place in the Home2015Inngår i: Proceedings of the ACM International Conference on Interactive Experiences for TV and Online Video, Association for Computing Machinery (ACM), 2015, s. 3-12Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Liveness, as discussed in HCI and in media studies, focuses on an intriguing and beloved experiential quality that can influence new forms of video applications. We suggest a shift from accounts of liveness in "events" to liveness in ambient media for home décor by designing a system called TransLive that exploits the "magic" of mediatizing the "now" at a distant and cherished place. We present an interview study including four families, who experienced the system for two weeks each in a concept apartment setting. It shows how immediacy and unpredictability provide compelling experiences. Authenticity and engagement, which are previously considered as inherent qualities in live media, instead occur in the context of use. Finally, the experience of transcendence triggered by slow and continuous video streams open up a new design space of liveness. Thus, not only do we take inspiration from liveness theory, but we also need to redefine it.

  • 2545.
    Wang, Jinyi
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Ramberg, Robert
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    User Participatory Sketching in User Requirements Gathering2012Inngår i: ICIC Express Letters: An International Journal of Research and Surveys, ISSN 1881-803X, Vol. 6, nr 12, s. 3055-3059Artikkel i tidsskrift (Fagfellevurdert)
  • 2546.
    Wang, Jinyi
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Ramberg, Robert
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kuoppala, Hannu
    User Participatory Sketching: A Complementary Approach to Gather User Requirements2012Inngår i: Proceedings of the 10th Asia Pacific Conference on Computer Human Interaction, New York: Association for Computing Machinery (ACM), 2012Konferansepaper (Fagfellevurdert)
  • 2547. Wang, Xueqin
    et al.
    Al Sabbagh, Bilal
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kowalski, Stewart
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    A Socio-Technical Framework for Threat Modeling A Software Supply Chain2013Inngår i: The 2013 Dewald Roode Workshop on Information Systems Security Research, IFIP WG8.11/WG11.13: Conference Proceedings / [ed] Anthony Vance, International Federation for Information Processing, 2013Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In this paper we suggest a possible threat modeling approach for software supply chain. A Socio-technical approach is discussed and applied for modeling software supply chain security based on a case study of Swedish armed forces (SWAF). First we review current practices and theories for threat modeling of software supply chain. Then we suggest the application of a socio-technical framework for studying software supply chain security problem from a systemic viewpoint. Afterward we propose a step-by-step approach for threat modeling including modeling the target system, identifying threats and analyzing countermeasures. We also present a Delphi groups validation of the socio-technical framework.

  • 2548. Wang, Yanan
    et al.
    Luo, Shijian
    Liu, Shuai
    Lu, Yuija
    Hansen, Preben
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Crafting Concrete as a Material for Enhancing Meaningful Interactions2017Inngår i: Human-Computer Interaction. User Interface Design, Development and Multimodality: Proceedings, Part I / [ed] Masaaki Kurosu, Springer, 2017, s. 634-644Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Concrete is a composite material mostly used for the buildings and road surfaces ever since early human history, and which also can be used in contemporary product design as its unique aesthetic properties. In this paper, we present a series of small-scale explorations of concrete crafted as a central material, first utilizing its hygroscopicity interacting as an ephemeral and dynamic display; and secondly eliciting tactile interaction for its unique surface textures. Through hands-on engagement to unveil concrete potential when fabricated with digital technologies, we discuss how this large-scale and ubiquitous material could bring particular and intriguing experiences in our everyday lives, most importantly how can the potential of concrete be framed and described and enhance meaningful concrete reflections within HCI community.

  • 2549. Wang, Yanan
    et al.
    Luo, Shijian
    Lu, Yujia
    Gong, Hebo
    Zhou, Yexing
    Liu, Shuai
    Hansen, Preben
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    AnimSkin: Fabricating Epidermis with Interactive, Functional and Aesthetic Color Animation2017Inngår i: Proceedings of the 2017 Conference on Designing Interactive Systems, Association for Computing Machinery (ACM), 2017, s. 397-401Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Human epidermis, as the largest organ on body, has become a new design platform for wearable computing. The availability of miniature electronics makes more possibilities for on-skin designs. In this paper, we present AnimSkin, a thin-film interface, which will emit dynamic color animations directly on skin. This is done by using thermochromic material embedded with transparent electrode acting as a capacitive sensor. Moreover, an accessible and low-cost fabrication method is introduced. Individuals could also customize aesthetic graphic designs by following the detailed fabrication process to achieve personalized patterns. We propose four different dynamic types of color animation by applying certain voltage to the heating circuitry. With two examples, Email Reminder and Light Control System, we demonstrate how AnimSkin can be integrated into everyday life, and specifically, we show how AnimSkin can benefit areas such as on-skin design, thin-film interface and beauty technology.

  • 2550. Wang, Yanbo
    et al.
    Min, Qingfei
    Han, Shengnan
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Understanding the effects of trust and risk on individual behavior toward social media platforms: A meta-analysis of the empirical evidence2016Inngår i: Computers in human behavior, ISSN 0747-5632, E-ISSN 1873-7692, Vol. 56, s. 34-44Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Trust and risk have been theorized and empirically approved as the most influential factors affecting individual behavior toward social media platforms (SMPs). However, the evidence is scattered and the understanding of the effects is ambiguous:To address this problem, a rigorous and quantitative meta analysis was conducted to investigate the empirical evidence of 43 studies in information systems research between 2006 and 2014. The findings suggested that trust and risk both had significant effects on individual behavior toward SMPs but that trust had a stronger effect. Moderating effects of trust objects (community members vs. platforms) and platform types (virtual communities vs. social networking sites) were found. Surprisingly, culture was found to exert no moderating effect. This paper contributes more generalized knowledge to social media research literature to the theory with regard to the influence of trust and risk on individual behavior toward SMPs. The knowledge serves as the foundation for future research efforts in social media. Implications for practice are discussed.

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