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  • 7151.
    Turkaj, Shkodran
    et al.
    Halmstad University, School of Information Technology.
    Pelvén, Karin
    Halmstad University, School of Information Technology.
    Hur företag arbetar med att uppnå fördelar i post-implementeringsfasen: En studie om hur företag arbetar med ERP-system i post-implementeringsfasen.2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 7152.
    Tyllman, Marina
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Fourodinezhad, Sanna
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Hur kan Electrolux Laundry Systems, Ljungby, uppnå ett effektivt monteringsarbete?2007Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Sammanfattning

    Electrolux Laundry Systems är världens ledande tillverkare av professionell tvättutrustning.

    ELS har produktionsanläggningar i Frankrike, Danmark och Sverige. Det pågår ett förändringsarbete

    inom organisationen som innebär en flyttning av produktionen i Danmark till

    Sverige.

    Fyra nya produktgrupper ska börja produceras i fabriken i Sverige vilket innebär en ny

    monteringsanläggning. Den första produktgruppen T4190 kommer inom en snar framtid

    att börja produceras i Sverige.

    Syftet med arbetet är att ge förslag på hur lagring, hantering samt beställning av komponenter

    kan ske inom monteringsanläggningen för torktumlare för att uppnå ett effektivt monteringsarbete.

    Utifrån syftet har följande problemformulering utarbetats.

    • Hur kan komponenter hanteras och lagras på ett sätt som underlättar vid monteringen

    av torktumlare. Denna huvudfråga delar vi in i ett antal under frågor som:

    • Hur kan ingående komponenter lagras för att effektivisera tillverkningen av torktumlare?

    • Vilken lagertyp kan tillämpas?

    • Hur stora bör partistorlekarna vara för att uppnå effektiv tillverkning?

    • När och hur bör beställningen av komponenter ske?

    Med utgångspunkt i studiebesök i fabrikerna i Danmark och Sverige inhämtades relevant

    information genom egna observationer och intervjuer. Teori angående lagring, materialplanering,

    hantering av material, produktionsfilosofier och materialflöden letades sedan upp.

    Genom analys av den insamlade data har förslag till hur fabriken i Sverige ska kunna hantera

    och lagra komponenter så att ett effektivt monteringsarbete uppstår presenterats.

  • 7153.
    Tyve, Mattias
    et al.
    Umeå University, Faculty of Social Sciences, Informatics.
    Törnblom, Kristoffer
    Umeå University, Faculty of Social Sciences, Informatics.
    Att identifera förändringsproblem vid processbaserad e-förvaltning2008Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Denna studies syfte är att synliggöra vilket förändringsarbete som sker inom den kommunala verksamheten när organisationer går från en hieraktiskt organisationsstruktur till en processinriktidad organisation. Studien genomfördes i en svensk kommun och fallstudie användes som metod. Den data som samlades in bestod av intervjuer av individer involverade i projektet, dokumentation och egna observationer. Analysen som gjordes på fallstudien utgick från fyra olika förändringsperspektiv. Genom perspektiven kan djupare förståelse skapas för det som händer i en organisation i förändring. Enligt studien ses förändringen som någonting positivt, men nya organisatoriska hinder uppstod till följd av det nya samarbetet. Bland annat strukturella problem på hur de olika organisationerna ska vara fristående men ändå samarbetande. Studien visar på att betrakta orgranisationen ur flera perspektiv kan ge djupare förståelse av vilka effekter det får på organisationen. Bland annat kan samma situation uttrycka sig annorlunda beroende från vilket perspektiv som betraktras. Vår slutsats är att kommunal verksamhet är komplex och mycket svår att förstå. Avtal mellan kundtjänst och förvalting kan ses som enkla instruktioner till kundtjänstpersonalen. Genom flerperspektivanalys kan dessa instruktioner få en ny innebörd och visa på oförutsedda effekter för hela organisationen.

  • 7154.
    Täckström, Oscar
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Velupillai, Sumithra
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Hassel, Martin
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Eriksson, Gunnar
    Dalianis, Hercules
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Karlgren, Jussi
    Uncertainty Detection as Approximate Max-Margin Sequence Labelling2010In: Proceedings of the Fourteenth Conference on Computational Natural Language Learning, Association for Computational Linguistics , 2010Conference paper (Other academic)
  • 7155.
    Töpel, Marie
    University of Skövde, Department of Computer Science.
    Projektstyrning i datakommunikationsföretag2001Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Att arbeta i projekt är i dag en vanligt förekommande arbetsform och det är därmed av vikt att denna arbetsform fungerar på ett bra sätt. Beroende på ett projekts syfte och storlek kan modellen för hur projektet ska bedrivas och genomföras variera. Dock har projekt alltid någon typ av organisation och en livscykel.

    I detta arbete har fem företagsintervjuer gjorts för att titta på hur teknikorienterade projekt bedrivs, projekt som utvecklar infrastrukturer/nätverkslösningar för datakommunikation. Frågeställningen i detta arbete är om dessa företag använder modeller för utvecklingsarbetet och hur de i så fall använder dem. Finns det specifikt framtagna modeller för denna typ av projekt som det exempelvis finns för systemutvecklingsprojekt?

    Resultatet av de gjorda företagsundersökningarna tyder på att det inte finns några namngivna och vedertagna modeller för hur projekt för just nätverksutveckling ska bedrivas. Företagen tar fram sina egna modeller vars utformning och omfattning starkt är kopplat till företagets storlek.

  • 7156.
    Törnberg, Michael
    et al.
    Kristianstad University, School of Health and Society.
    Eric, Karlsson
    Kristianstad University, School of Health and Society.
    Mobilapplikationer som hjälpmedel i underhållsindustrin: med fokusering på arbetsorderhantering2012Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis paper discusses the results of a survey which was conducted to investigate the potential usefulness of mobile apps in the maintenance department at Perstorp Specialty Chemicals AB. The paper contains four sections, a theory section, a method section , a section that explains the functionality of the app, and finally a results section where the results and conclusions of the survey are discussed. The theory section explains and discusses relevant terminology used in the computer science field and in the maintenance industry. The theoretical model used in this paper is also discussed. The methods section gives a stepwise description of the project and a description of platform and software used. In addition, the calculation models and survey techniques utilized are presented. The app section gives a thorough description of the app and its functions. Finally, results, conclusions and suggestions for future work are presented.

  • 7157.
    Törnqvist, Oskar
    Linköping University, Department of Electrical Engineering.
    Black-Box Modeling of the Air Mass-Flow Through the Compressor in A Scania Diesel Engine2009Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Stricter emission legislation for heavy trucks in combination with the customers demand on low fuel consumption has resulted in intensive technical development of engines and their control systems. To control all these new solutions it is desirable to have reliable models for important control variables. One of them is the air mass-flow, which is important when controlling the amount of recirculated exhaust gases in the EGR system and to make sure that the air to fuel ratio is correct in the cylinders. The purpose with this thesis was to use system identification theory to develop a model for the air mass-flow through the compressor. First linear black-box models were developed without any knowledge of the physics behind. The collected data was preprocessed to work in the modeling procedure and then models with one or more inputs where built according to the ARX model structure. To further improve the models performance, non-linear regressors was developed from physical relations for the air mass-flow and used to form grey-box models of the air mass-flow.In conclusion, the performance was evaluated through comparing the estimated air mass-flow from the best model with the estimate that an extended Kalman filter together with a physical model produced.

  • 7158.
    Uhlén, Hanna
    et al.
    Halmstad University, School of Information Technology.
    Zander, Madeleine
    Halmstad University, School of Information Technology.
    Postimplementering av affärssystem: En studie om hur organisationer arbetar med stabiliseringsfasen under postimplementering2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    ERP systems may have a significant impact on how organizations are managed and organized and they are the core of information management in organizations. Implementing an ERP system in an organization is a comprehensive process. Previous research on ERP has mainly focused on how organizations should proceed to accomplish a successful implementation. Despite this, the failure rate of ERP implementations is high and several scientific articles are pointing out a knowledge gap in what is known as post implementation. Post implementation is what happens after an ERP systemsimplementation. The post implementation stage consists of three phases. This study focuses on the first phase, stabilization, and the work done to achieve a stable position. A stable position can be defined as that the processes in the organization works effectively and smoothly and that the users are confident in using the system. 

    Based on the literature study, three themes that organizations work with during stabilization were identified. These were evaluation, user training and business processes reengineering. On the basis of these themes, interviews were conducted to answer the question, "How do organizations work with stabilization during the post implementation stage?”. Based on result, analysis and discussion, four areas were identified which organizations work with during the stabilization phase to achieve a stable: development of priority lists, evaluation of user expertise, user training and evaluation of business processes.

  • 7159.
    Uimonen, Paula
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    African art students and digital learning2011In: Interactive Media Use and Youth: Learning, Knowledge Exchange and Behavior / [ed] Elza Dunkels, Gun-Marie Frånberg, and Camilla Hällgren, ed., Hershey, PA: Information Science Reference , 2011, no 1, p. 222-239Chapter in book (Other academic)
    Abstract [en]

    Imagine 120 students sharing 5 computers, yet feeling that they are part of an interconnected world. This is the social context framing digital learning for African art students, the material limitations and cultural imaginations of which this chapter is concerned with. Based on extensive ethnographic engagements at TaSUBa, a national institute for arts and culture in Tanzania, this chapter investigates the development of digital media skills. Using the concept of digital learning to cover the acquisition of ICT skills as well as the use of ICT as a learning tool, the analysis spans from early expectations of connectivity to current forms of media engagement. Focusing on the social and cultural aspects of digital learning, the concept hybrid media engagement is introduced to capture the creative ways in which African art students overcome limitations in infrastructure, while exploring new forms of cultural production.

  • 7160.
    Uimonen, Paula
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Digital Drama: Teaching and Learning Art and Media in Tanzania2012Book (Other academic)
    Abstract [en]

    The aim of this book is to explore digital media and intercultural interaction at an arts college in Tanzania through innovative forms of ethnographic representation. The book and the series website weave together visual and aural narratives, interviews and observations, life stories and video documentaries, art performances and productions. It paints a vivid portrayal of everyday life in East Africa's only institute for practical art training, while tracing the rich cultural history of a state that has mixed tribalism, nationalism, Pan-Africanism, and cosmopolitanism in astonishingly creative ways. While following the anthropological tradition of thick description, Digital Drama employs a more artistic and accessible style of writing. Dramatic, ethnographic details are interspersed with theoretical postulations to explain and make sense of the unfolding narratives. The accompanying website visualizes and sensualizes the stories narrated in the book, unfolding a dramatic world of African dance, music, theater, and digital culture.

  • 7161.
    Uimonen, Paula
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Social and Mobile Media in ICT4D2012In: Social Media in Development Cooperation: Ørecomm - Centre for Communication and Glocal Change / [ed] Ricky Storm Braskov, Malmö: Ørecomm at Malmö University and Roskilde University , 2012, p. 20-28Conference paper (Refereed)
    Abstract [en]

    Can Facebook, Twitter, and mobile phones change the world? Obviously not! But there is something to be said for social networking sites, online news feeds, and mobile communication when it comes to ICT for Development (ICT4D). This paper will identify some key features of social and mobile media and relate these to social and political change, while paying attention to global patterns of digital stratification. Spider-supported projects that aim to use blogs and mobile phones in the fight against corruption in Africa will be used to illustrate and concretize opportunities as well as challenges. Reflections on how a networked organization like Spider can benefit from social media will be combined with a self-critical assessment of some pitfalls involved.

  • 7162.
    ul Muntaha, Sidrat
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Skeppstedt, Maria
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Kvist, Maria
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Dalianis, Hercules
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Entity Recognition of Pharmaceutical Drugs in Swedish Clinical Text2012In: Proceedings of the Conference, 2012, p. 77-78Conference paper (Refereed)
    Abstract [en]

    An entity recognition system for expressions of pharmaceutical drugs, based on vocabulary lists from FASS, the Medical Subject Headings and SNOMED~CT, achieved a precision of 94\% and a recall of 74\% when evaluated on assessment texts from Swedish emergency unit health records.

  • 7163.
    Ulfhake, Louise
    Karlstad University, Division for Information Technology.
    A model for systems development to produce pedagogical software: multimedia for business or pleasure2001In: On methods for systems development in professional organisations: the Karlstad University approach to information systems and its role in society / [ed] Anders G Nilsson, John Sören Pettersson, Lund: Studentlitteratur, 2001, p. 142-164Chapter in book (Refereed)
    Abstract [en]

    Freshly produced or newly purchased software should increase the productivity in our business operations. The program should be functional, usable and able to fulfil our need of information. This is particularly important if it is to be used in education, as a means to learn new material. Developing software for education purposes is a complicated process, requiring knowledge of how we think and learn, and of the possibilities and limitations that affect a computer. In this chapter a structured and systematic model for systems development is presented, designed during the process of developing pedagogical software. Currently some pedagogical software applications are used in distance education, for courses in the subject of Information Systems. One of these, entitled "Systems development", is introduced and used as a recurring example in this chapter

  • 7164.
    Ulfhake, Louise
    Karlstad University, Faculty of Economic Sciences, Communication and IT, Centre for HumanIT. Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Information Systems and Project Management.
    Evaluating Interactive Multimedia in an Inexpensive and Timesaving Way: Illustrated by Business Case Studies2003In: / [ed] Burnett, R., Brunström, A. & Nilsson, A.G, John Wiley & Sons , 2003, p. 97-124Chapter in book (Refereed)
    Abstract [en]

    Evaluating is important to assure quality during design and development of interactive multimedia as well as in reviewing of the final product. This chapter presents an evaluation methodology, which is both inexpensive and timesaving. In critically evaluating three multimedia cases, it is found that systematic models and methods have a great deal to offer in the field of quality interactive multimedia. Six European business schools collaborated in the years 1998 2000 in the production of several multimedia cases on small and medium sized and large companies. Stockholm School of Economics in Sweden developed three of them and these are presented as to exemplify the evaluation methodology. The survey introduces a methodology based on four tight integrated parts for evaluation: Learning Scenario, User Interface, Content and Technique

  • 7165.
    Ulfhake, Louise
    Karlstad University, Faculty of Economic Sciences, Communication and IT, Centre for HumanIT. Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Information Systems and Project Management.
    Systemutvecklingsmodell för framställning av pedagogiska programvaror - multimedia till nytta eller nöje2000In: / [ed] A G Nilsson & J S Pettersson, Studentlitteratur , 2000, p. 138-160Chapter in book (Refereed)
    Abstract [sv]

    Ett nygjort eller nyinförskaffat datorprogram ska höja vår produktivitet i verksamheten. Programmet ska vara funktionellt, användbart och tillgodose våra informationsbehov. Detta gäller i hög grad om programmet ska användas i utbildning för inlärning av något nytt stoff. Det är en komplicerad process att utveckla datorprogram för utbildningssyfte. Den kräver kännedom om hur vi tänker och lär, förutom vilka möjligheter och begränsningar som styr datorn. I detta kapitel redovisas en strukturerad och systematisk systemutvecklingsmodell, som utformats under framställningen av pedagogiska programvaror. Några av dessa pedagogiska programvaror används idag i distansutbildningen i ämnet informatik. Ett av dem, den pedagogiska programvaran "Systemutveckling", presenteras och används som genomgående exempel i detta kapitel

  • 7166.
    Ulfhake, Louise
    Karlstad University, Faculty of Economic Sciences, Communication and IT, Centre for HumanIT. Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Information Systems and Project Management.
    Systemutvecklingsmodeller för datorstödd utbildning1987Report (Other academic)
  • 7167.
    Ullah, Ikram
    et al.
    Blekinge Institute of Technology, School of Computing.
    Ayaz, Muhammad
    Blekinge Institute of Technology, School of Computing.
    Investigation of Customer-Driven Innovation2013Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    Context:- Software companies have changed their strategies from “innovating for customers” and “innovating with customers” to innovating “by customers” which is also known as customer-driven innovation. Actually, companies move toward customer-driven innovation programs because they need to collect as many ideas as possible from suitable customers to ensure their global competitiveness and set the stage for profitable growth. As customer-driven innovation is comparatively a new trend, the objective of our research is to explore its status in the new era of software development. Objectives:- The main aim of our study is to investigate customer-driven innovation in the modern era of software development. It also explores the motives, benefits, communication channels and barriers between customers and software companies to cooperate with each other. Methods:- Systematic Literature Review (SLR) and industrial interviews are two basic types of data collection methods which are utilized to accomplish the objectives of our study. Then qualitative data analysis software is used to perform thematic analysis (Grounded Theory) in order to draw conclusions and highlight useful information from the collected data. Results:- Based on the SLR and interviews result the conclusion was made that there are different types of motives and benefits for company and customer to cooperate with each other during idea generation stage of product and service innovations. We identified various types of activities and communication channels in the context of customer-driven innovation. In addition, we identified different types of barriers that can limit the cooperation between company and customers. Conclusions:- The comparison between theory and practice explored most important motive and benefit for company and customers to cooperate with each other during ideation process of product and service innovation. It also identified most significant activities and communication channels for idea generation in the context of customer-driven innovation. In addition, we identified most common barriers which prevent company and customers to cooperate with each other during ideation process.

  • 7168.
    Ullberg, Johan
    KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
    Application of a Language for Interoperability Modeling and Prediction2012Report (Other academic)
  • 7169.
    Ullberg, Johan
    KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
    OCL statements for interoperability prediction2012Report (Other academic)
  • 7170.
    Ullberg, Jonas
    et al.
    Örebro University, School of Science and Technology.
    Coradeschi, Silvia
    Örebro University, School of Science and Technology.
    Pecora, Federico
    Örebro University, School of Science and Technology.
    On-line ADL recognition with prior knowledge2010In: STAIRS 2010: proceedings of the fifth Starting AI Researchers' Symposium / [ed] Thomas Ågotnes, Amsterdam: IOS Press, 2010, p. 354-366Conference paper (Refereed)
    Abstract [en]

    This paper addresses the problem of recognizing activities of daily living. The novelty lies in the use of an existing knowledge base (ConceptNet) to introduce prior knowledge into the system in order to reduce the amount of learning required to deploy the system in a real environment. The use of household objects is central in the recognition of activities that are being performed, and we attach semantic meaning to both the objects and activities that are being recognized. The paper describes a framework which is specifically geared towards realizing activity recognition systems which leverage prior knowledge. A preliminary implementation of a neural network based recognition system built on this framework is shown, and the added value of prior knowledge is evaluated through the use of various data sets.

  • 7171.
    Ulrik, Franke
    et al.
    KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems. FOI – Swedish Defence Research Agency SE-16490 Stockholm, Sweden.
    Buschle, Markus
    KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
    Österlind, Magnus
    KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
    An experiment in SLA decision-making2013Conference paper (Refereed)
    Abstract [en]

    Decision-makingwithregardtoavailabilityservicelevelagree- ments (SLAs) is investigated. An experimental economics approach was used to elicit the preferences for different SLA alternatives from the sub- jects (N = 16), all professionally working with IT management. A pre- viously published scenario on downtime costs in the retail business was used in the experimental setup. Subjects made 18 pairwise choices under uncertainty. After the experiment, they were paid based on one of their choices, randomly selected. The subjects rarely behaved as expected util- ity maximizers in the experiment. This raises questions about company SLA management in real situations, and calls for further research.

  • 7172.
    Ulriksson, Jenny
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
    Consistency management in collaborative modelling and simulation2005Licentiate thesis, comprehensive summary (Other scientific)
    Abstract [en]

    The aim of this thesis is to exploit the technological capabilities of computer supported collaborative work (CSCW) in the field of collaborative Modelling and Simulation (M&S). The thesis focuses on addressing two main problems: (i) providing flexible means of consistency management in collaborative M&S, and (ii) the ability of providing platform and application independent services for collaborative M&S.

    In this work, some CSCW technologies and how some of the concepts can be incorporated in a distributed collaborative M&S environment, have been studied. An environment for component based simulation development and visualization, which provides support for collaborative M&S, has been designed. Some consistency policies that can be used in conjunction with distributed simulation and the High Level Architecture (HLA) have been investigated. Furthermore, the efficient utilization of HLA and XML in combination, as the foundation of a CSCW infrastructure has been proved. Two consistency policies were implemented utilizing HLA, a strict and an optimistic, in the distributed collaborative environment. Their performance was compared to the performance of a totally relaxed policy, in various collaboration situations.

  • 7173.
    Ulriksson, Jenny
    et al.
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
    Ayani, Rassul
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
    Consistency overhead using HLA for collaborative work2005In: Ninth IEEE International Symposium on Distributed Simulation and Real-Time Applications, Proceedings, LOS ALAMITOS: IEEE COMPUTER SOC , 2005, p. 7-15Conference paper (Refereed)
    Abstract [en]

    CSCW (Computer Supported Cooperative Work) has been around for many years. However, despite growing use of CSCW, general infrastructures that support it are few, and seldom provide data consistency management. A question at issue is how to easily provide different consistency policies for CSCW applications. In a modeling and simulation project at the Swedish Defense Research Agency we have evaluated technologies for developing a CSCW infrastructure. A frequently used distributed simulation architecture the HLA, appeared as a candidate for beneficially providing CSCW services. Hence we have investigated the use of HLA for the purpose, with successful result. This paper presents some of the outcome, and the experiences from adapting an application to CSCW utilizing HLA. It presents performance experiments for evaluation of three consistency policies for CSCW using HLA, conclusions, future work and some recommendations.

  • 7174.
    Ulriksson, Jenny
    et al.
    KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.
    Moradi, Farshad
    Ayani, Rassul
    KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.
    Collaborative Modeling and Simulation in a Distributed Environment.2003Conference paper (Other academic)
    Abstract [en]

    Computer-based collaboration is an issue of increasing importance within the community of computer science. The advantages of the subject are many and ascribe to several different areas.The foremost purpose of computer-based collaboration is to promote the overcoming of distances between organisations and people. This advantage could also be of considerable use within thecommunity of Modelling and Simulation (M&S) to improve quality of work in the M&S processes, and to increase efficiency. Such collaboration may be beneficial in many contexts such as distance education, distance training, and distance team work.At the Swedish Defence Research Agency (FOI), we are investigating collaborative M&S indistributed environments. A prototype for collaborative modelling has been developed, in which users may collaboratively develop a simulation model. The collaborative applications, and the synchronization of the cooperative work, are managed in a distributed way, based on Peer-to-Peer technology. For this purpose the JXTA P2P framework was chosen. The work hasexposed some challenges for collaborative M&S, better understanding of computer collaboration, and identification of suitable techniques.This paper presents the collaborative M&S prototype developed so far, and highlights advantages and disadvantages with techniques chosen for the implementation. It also discusses some challenges, lessons learned and experience gained from the use of Peer-to-Peer technology in this specific area.

  • 7175.
    Ulriksson, Jenny
    et al.
    KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.
    Moradi, Farshad
    Svensson, Olof
    A Web-based Environment for building Distributed Simulations.2002In: Proceedings of the European Simulation Interoperability Workshop, London, Great Britain,June 2002, 2002Conference paper (Other academic)
    Abstract [en]

    Internet communication in general and the World Wide Web specifically have beenrevolutionizing the computer industry. It has affected the way computer systems have beendesigned, developed and executed. Web-based simulation is a relatively new topic within thefield of modelling and simulation (M&S), which represents a connection between the webtechnologyand M&S. Although the discipline is young it has the potential to fundamentallychange the simulation modelling methodology.An ongoing project within the Swedish Defense Research Agency (FOI) is investigating thepotentials of web-based simulation by studying the possibilities, requirements and feasibility ofdeveloping methodologies for building web-based distributed simulations, e.g. HLA17federations. In order to achieve the above goal an environment has been designed and partiallydeveloped for collaboratively building distributed simulations, using a standard web-browser onthe client side. One key requirement for the environment has been the ability to buildcomponent-based simulations with a hierarchical structure.In this paper we will present our initial results and findings when developing our environment,present different techniques and some of our implementations, based on HLA standard andcontinue with a discussion on how to construct federations in a hierarchical fashion. We willdiscuss how HLA federations can be integrated with the web technology, without burdening theclient with heavy calculations, often associated with execution of simulations. We will alsodiscuss the component-based development approach as a quick and cost effective method forbuilding software systems and how it could be used with web-based simulations.

  • 7176.
    Ulvstig, Kalle
    University of Skövde, Department of Computer Science.
    Systemutvecklares syn på användarcentrerad systemdesign2003Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Det talas ofta om hur viktigt det är att involvera användarna vid systemutveckling. Genom att använda användarcentrerad systemdesign kan det bidra till bättre system både ur teknisk- och användarsynpunkt. Det är av stor betydelse att de användare som tas ut vid användarcentrerad systemdesign representerar användargruppen. Användarcentrerad systemdesign är en process som fokuserar på användare och användbarhet genom hela utvecklingsprocessen och vidare genom hela livscykeln. Detta arbete syftar till att undersöka vilka kriterier som utvecklare använder sig av för att ta ut användare vid angreppssättet användarcentrerad systemdesign. Arbetet har genomförts genom en litteraturstudie och ett antal intervjuer.

  • 7177.
    Unger, Liza
    University of Skövde, Department of Computer Science.
    OMT och Objectory: vilka synpunkter har några svenska utvecklingsföretag på dessa metoder idag?1998Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Objektorientering har kommit att bli en väletablerad teknik inom systemutvecklingen. De fördelar som den objektorienterade tekniken anses medföra är bl a att den ger en mer användarnära systemutveckling och ökar produktiviteten genom återanvändning av komponenter. Men det har även riktats kritik mot den objektorienterade tekniken. Ett område som har kritiserats är de objektorienterade metoderna. De har uppfattats som instabila och ofullständiga i början av 90-talet då de var nya. Det medförde att jag blev intresserad av att undersöka hur några av de objektorienterade metoderna fungerar idag.

    Detta arbete tar upp en del av de synpunkter och erfarenheter som några svenska utvecklingsföretag har av de objektorienterade metoderna OMT och Objectory. Syftet med arbetet är bl a att få fram om OMT och Objectory har åtgärdat de brister som de i tidigare litteratur har kritiserats för.

    Den metod som använts för att hantera valt ämne är en kombination av en litteraturstudie och intervjuer/enkäter.

    Det har visat sig under arbetes gång att det är betydligt fler företag som jag har kommit i kontakt med som tillämpar Objectory än OMT. Något överraskande är att alla undersökta företag använder UML-notation och inte OMT och Objectorys ursprungsnotationer. Det anser jag tyda på att UML har fått en stor genomslagskraft. Vidare tyder resultatet av undersökningen på att en del av den kritik som riktats mot OMT och Objectory i litteratur, publicerad i början av 90-talet, har åtgärdats för att förbättra metoderna.

  • 7178.
    Uppström, Elin
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Re-Visiting IS Design Science Artifacts: Making a Case for Critical Realism2017In: Proceedings of the 50th Hawaii International Conference on System Sciences (HICSS 2017), 2017, p. 4675-4684Conference paper (Refereed)
    Abstract [en]

    In this paper critical realism is suggested as a suitable philosophical assumption to guide a separate, stand-alone retrospective evaluation of design science projects and artifacts. A main contribution of the paper is to argue that knowledge can be gained in retrospective evaluations of design science projects regardless of the success or nonsuccess of the project itself. Thereby, retrospective evaluation complements current evaluations that are mostly means-end focused. The argumentation is supported through re-visiting two e-government design science projects, which can be considered both as failures and successes depending on the framing. Critical realism puts focus on knowing through making and widens the use of design science in areas where utility is not the main goal. Future research should focus on providing more details on how a critical realism retrospective in design science should be carried out.

  • 7179.
    Uppström, Elin
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    The Promise of Public Value Co-Creation in Open Government: Designing IT Services for Open Government and Public Value Co-Creation2014Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    The engagement of citizens in governmental actives is the future of publicsector reforms. The private sector has already started to leverage onlinetechnology to innovate and to reinvent businesses. The move towards servicesexchange instead of goods exchange is making producers, providersand users cooperate to recognize and exploit value co-creation opportunities.The degree to which collective intelligence is leveraged could be correlatedto the value an initiative generates in the public sector. Thereby open governmentimplies a focus on value co-creation in the public sector. This thesisargues that an important purpose of opening up governments towards citizensand private business is to leverage the potential of value co-creation in asimilar fashion to that already being explored in the private sector. To explorethis phenomenon this thesis addresses the following research question:How can local government use IT services to become more open and leveragethe potential of public value co-creation?Utilizing a design science approach with interpretive philosophical assumptions,the thesis contributes to knowledge on open government and value cocreationby designing artifacts that support open government in the form ofe- and m-services. It also investigates inhibitors of public value co-creationthat may arise from the design of the artifacts.

  • 7180.
    Uppström, Elin
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Lönn, Carl-Mikael
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    The Promise of a Crowd2013In: AMCIS 2013 Proceedings, Association for Information Systems, 2013Conference paper (Refereed)
    Abstract [en]

    This paper presents an evaluation of a mobile complaint and problem-reporting solution made for Swedish municipalities and their citizens. The evaluation is made through a government 2.0 framework to assess the appropriateness of the initiative as a citizen-sourcing solution. The research approach consists of a secondary analysis of empirical data. The researchers have been active participants in gathering the data for the secondary analysis. The results show that although the promise of the crowd is very prominent in the technical platform, municipalities are not prepared to fully utilize the citizen-sourcing solution. The main contribution for research is a widening of the body of knowledge regarding citizen-sourcing by an empirical application of a previously developed theoretical citizen-sourcing framework. The paper contributes to society and practice through highlighting difficulties that can be expected when realizing the promise of the crowd.

  • 7181.
    Uppström, Elin
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Lönn, Carl-Mikael
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Hoffsten, Madeleine
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Thorström, Joakim
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    New Implications for Customization of ERP Systems2015In: Proceedings of the 48th Annual Hawaii International Conference on System Sciences (HICSS 2015) / [ed] Tung X. Bui, Ralph H. Sprague, Jr. Los Alamitos,, IEEE Computer Society, 2015, p. 4220-4229Conference paper (Refereed)
    Abstract [en]

    Enterprise Resource Planning (ERP) Systems are standardized software packages intended to support the majority or all of an organization's processes. Customization of an ERP system is usually required to achieve fit between system and business processes of an organization. Customization options ranges from setting parameters in the system to developing new functionality by modifying source code. Models describing customization options are a decade old. Since then, the trend is for ERP systems to become more flexible. The feasibility of customization is facilitated and new options for customization are made available. Through in depth interviews, this research identifies a need for revising existing models. Presents necessary changes and proposes new customization options that should be included in a new model. There is also a need for customization models for different types of ERP systems. This paper therefore also contributes with describing how customization of cloud ERP relates to existing models.

  • 7182.
    Uppström, Elin
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Nilsson, Andreas
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Modeling IT-mediated value encounters between citizens and local government2012Conference paper (Refereed)
    Abstract [en]

    Cocreation of value in inter-organizational contexts is an increasingly common phenomenon. There is a lack of empirically grounded research regarding value cocreation in social contexts where meetings are mediated by IT. Through a case study of a e-government project, cocreation between citizens and local government is explored. The value encounter model is used as a tool for modeling cocreation. Results show that the model is able to capture significant cocreation activities, but miss some of the key values from the IT-system. The study recommends future research towards complementing the value encounter model with an “IT-object” and recommend investigating the Platform as a service field for inspiration.

  • 7183.
    ur Réhman, Shafiq
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Expressing emotions through vibration for perception and control2010Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    This thesis addresses a challenging problem: “how to let the visually impaired ‘see’ others emotions”. We, human beings, are heavily dependent on facial expressions to express ourselves. A smile shows that the person you are talking to is pleased, amused, relieved etc. People use emotional information from facial expressions to switch between conversation topics and to determine attitudes of individuals. Missing emotional information from facial expressions and head gestures makes the visually impaired extremely difficult to interact with others in social events. To enhance the visually impaired’s social interactive ability, in this thesis we have been working on the scientific topic of ‘expressing human emotions through vibrotactile patterns’.

    It is quite challenging to deliver human emotions through touch since our touch channel is very limited. We first investigated how to render emotions through a vibrator. We developed a real time “lipless” tracking system to extract dynamic emotions from the mouth and employed mobile phones as a platform for the visually impaired to perceive primary emotion types. Later on, we extended the system to render more general dynamic media signals: for example, render live football games through vibration in the mobile for improving mobile user communication and entertainment experience. To display more natural emotions (i.e. emotion type plus emotion intensity), we developed the technology to enable the visually impaired to directly interpret human emotions. This was achieved by use of machine vision techniques and vibrotactile display. The display is comprised of a ‘vibration actuators matrix’ mounted on the back of a chair and the actuators are sequentially activated to provide dynamic emotional information. The research focus has been on finding a global, analytical, and semantic representation for facial expressions to replace state of the art facial action coding systems (FACS) approach. We proposed to use the manifold of facial expressions to characterize dynamic emotions. The basic emotional expressions with increasing intensity become curves on the manifold extended from the center. The blends of emotions lie between those curves, which could be defined analytically by the positions of the main curves. The manifold is the “Braille Code” of emotions.

    The developed methodology and technology has been extended for building assistive wheelchair systems to aid a specific group of disabled people, cerebral palsy or stroke patients (i.e. lacking fine motor control skills), who don’t have ability to access and control the wheelchair with conventional means, such as joystick or chin stick. The solution is to extract the manifold of the head or the tongue gestures for controlling the wheelchair. The manifold is rendered by a 2D vibration array to provide user of the wheelchair with action information from gestures and system status information, which is very important in enhancing usability of such an assistive system. Current research work not only provides a foundation stone for vibrotactile rendering system based on object localization but also a concrete step to a new dimension of human-machine interaction.

  • 7184.
    ur Réhman, Shafiq
    et al.
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Liu, li
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Li, Haibo
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Lip segmentation: performance evaluation criteria2006Report (Other academic)
    Abstract [en]

    In this work, we determined the measure to compare and evaluate the performance of lip detection techniques.Despite of a number of methods used for lip-detecction/localization, a reliable method for comparing and determining the quality of the result is still missing. The proposed criterion ensures the clear and fair way to report the results so that mentioned results can be comparable and measurable to enhance the quality of lip detection and/or error rate. After applying the EM-like algorithm it is showed that performance of the specific technique can be evaluated.

  • 7185.
    Vakkalanka, Sairam
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Narayanasetty, SR Phanindra Kumar
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Investigating Research on Teaching Modeling in Software Engineering -A Systematic Mapping Study2013Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    Context: Modeling is an important activity, which is used, in different phases of software engineering. Without models and modeling, it is nearly impossible to design and develop software systems, which demands the need for modeling to be taught in software engineering. There exist a number of reported models, methods, tools and languages to teach modeling in software engineering, which suggests the need for a classification and an overview of the area. This research investigates the state of published research on teaching modeling in software engineering in order to provide a systematic overview and classification of these different ways of teaching modeling with an insight on their importance and relevance to this research area. Objectives: The overall goal of the research was achieved with fulfilling the following objectives: understanding how systematic mapping is conducted, developing a systematic mapping process that will properly provide data for investigating the published research, applying the process, and finally reflecting on the results of the mappings, analyzing the importance and evaluating relevance of the published research. Methods: Systematic literature review was used as a tool to understand and inspect how systematic mapping was carried out in the area of software engineering. Based on the results of systematic literature review, new guidelines were formulated to conduct systematic mapping. These guidelines were used to investigate the published research on teaching modeling in software engineering. The results obtained through the systematic mapping were evaluated based on Industrial relevance, Rigor and citation count to examine their importance and identify research gaps. Results: 131 articles were classified into five classes such as Languages, Course Design, Curriculum design, Diagrams, others using semi-manual classification scheme and classification facets such as the type of audience, type of contribution, type of research, type of publication, type of publication year, type of research method and type of study setting. After the evaluation of Industrial relevance, rigor & citation ranking on the obtained results of the classification, 8 processes, 4 tools, 3 methods, 2 measurement-metrics and 1 model were extracted to teach modeling in software engineering. Also, this classification when compared with an existing classification, which is based on interviews and discussions, showed that our classification provides a wider overview with a deeper insight of the different ways to teach modeling in software engineering. Conclusions: Results of this systematic mapping study indicate that there is an increase in the research activity on teaching modeling in software engineering, with Unified Modeling Language (UML) being the widely research area. Much research is emphasized on teaching modeling to students from academia which indicates a research gap in developing methods, models, tools and processes to teach modeling to students/practitioners from the industry. Also, considering the citation ranking, industrial relevance and rigor of the articles, areas such as course design and curriculum development are highly neglected, suggesting the need for more research focus.

  • 7186.
    Vallgren, Annika
    University of Skövde, Department of Computer Science.
    Svenska patientjournaler på Internet är det möjligt?2001Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Idag går det att publicera och hämta information från databaser på Internet. Inom hälso- och sjukvården kan förbättringar av vården ske om patientjournaler fanns tillgängliga på Internet. Här undersöks om det under svenska förhållanden är genomförbart. Studien syftar till att belysa för och nackdelar med att publicera patientjournaler på Internet samt att belysa specifika egenskaper hos patientjournaler som måste tas hänsyn till vid en eventuell publicering.

    Informationen om en patient måste skyddas mot att obehöriga kommer åt eller ändrar den. Den måste även vara åtkomlig just då den erfordras av en auktoriserad användare. Vården är ett områden där bristande säkerhet kan bli livshotande.

    De svenska lagar som måste beaktas då patientjournaler görs åtkomliga på Internet är: Personuppgiftslagen, Lag om vårdregister, Sekretesslagen, Patientjournallagen samt Lag om hälsodataregister. Lagarna utgör inte något hinder mot åtkomst av patientjournaler på Internet under förutsättning att detta kan utföras på ett för patienten säkert sätt.

  • 7187.
    Vallin, Joakim
    Linnaeus University, Faculty of Technology, Department of Informatics.
    Förväntningars effekt på attityd i den inledande kontakten med e-förvaltning2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    When a person makes the decision to start a company, they will be required to contact one or several government services. This study tries to explain how expectations on that first contact and the new role as an entrepreneur  will affect the users attitude towards government. In the digital society of today, the swedish government have decided to use a large amount of resources on digitalisation. Most citizens have a view about how their contact with the government should work. These expectations and prejudices affects their initial attitude towards government services. This study seeks to answer how the initial contact between citizen and official can affect the future attitudes of users. This is studies by conducting semi-structured interviews with seven citizens that have registered a limited liability company within the last six months. The interviewees have differing amounts of experience of running a company. The interviews relates to how the interviewees have experiences the act of starta a company. The stories are then analysed and coded with help from a number of theories. Most salient is the Expectation-confirmation theory (ECT), which is used to study how confirmation of expectations affect continuance intention. This is then combined with the Unified theory of acceptance and use of technology (UTAUT), a composite theory use for studying how a number of factors affect acceptance and continuance intention, by combining these the the study gains a stronger connection to the informations systems field. Lastly, concepts from the g-Quality evaluation model are added. This is done to strengthen the connection to the e-government context, in which the case study will be carried out.

    The result implies that beginner have a increased need to have information clearly presented. To help beginners with this, you should offer additional support aimed towards information gathering. Other than this it appears that people with low experience does not differ greatly from the general needs that have been presented in earlier theories of acceptance and use of technology.

  • 7188.
    Vallé, Troy
    Linköping University, Faculty of Arts and Sciences. Linköping University, Department of Management and Engineering, Information Systems.
    Smarta elnät eller smarta användare?: En studie om användarens roll vid planering, utveckling och användning av smarta elnät2016Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med denna studie har varit att närmare studera användarnas roll vid planering, utveckling och användande av smarta elnät, vad man kan dra för lärdomar av pågående projekt inom utvecklingen av smarta elnät när det kommer till användarnas roll i projekten, samt ge rekommendationer för ett framtida arbete. Detta gjordes genom en fallstudie av två sammanhängande projekt inom en kommun i Sverige som för närvarande arbetar med smart stadsutveckling och smarta elnät. Empiriinsamling skedde med hjälp intervjuer av boende och ansvariga i projektet samt projektdokumentation.

     

    Resultatet visar att de boendes roll i planeringen av projektet inte var stor, och att de inte räknades in bland de viktiga intressenter som enligt rekommendationer skulle vara delaktiga i projektet. Vidare skedde användarmedverkan i en begränsad form vid utvecklingen av den teknik som skulle användas hemma hos de boende, och då främst i form av användartester efter det att systemen hade tagits fram.  Vidare visade intervjuerna på ett bristande engagemang hos användarna när det kommer till att använda tekniken som finns tillgängliga i det smarta nät som utvecklats inom kommunen. Dessa resultat utgör viktiga lärdomar för framtida projekt. 

     

    Rekommendationerna som togs fram för ett framtida arbete inom smarta elnät är främst att det bör ske en ökad involvering av användare under samtliga delar i projekt rörande smarta elnät för att säkerställa en relevant och demokratisk samhällsutveckling och att detta bör ingå i projektens målsättningar. Vidare bör framtida projekt undersöka möjligheterna med att studera och arbeta med sociala praktiker inom energianvändning, för att undersöka hur man kan skapa en övertygelse hos de boende som leder till en ökad vilja att spara energi, och utnyttja de tekniska verktyg som gör detta möjligt. Det krävs även arbete för att hitta ytterligare incitament till aktiv energibesparing för att optimal användning av de smarta näten ska kunna uppnås.

  • 7189.
    van de Pol, Rogier
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE).
    Widehov, Mattias
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE).
    Hållbarhet och offentliga IT-upphandlingar: En studie om IT-konsulters arbete med offentliga upphandlingar2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Att utveckla hållbart innefattar att behoven hos den nuvarande generationen möts utan att äventyra framtida generationers möjligheter. En integrerad syn på hållbarhet är viktig eftersom de tre dimensionerna (ekologisk, ekonomisk och social) är förbundna med varandra. Samhället ställer krav på arbete kring hållbarhetsfrågor och att företag tar ansvar för sina organisationer. Offentliga upphandlingar innehåller krav på att företag kommunicera sitt arbete kring hållbar utveckling. Studien visar på att IT- företag känner denna press och de arbetar ständigt med att förbättra sättet de kommunicerar och presenterar arbetet kring hållbarhet. IT- konsulter är i behov av hjälpmedel för att arbeta och kommunicera kring hållbar utveckling. Denna studie har resulterat i riktlinjer för hur IT‐konsulter vid upphandling kan kommunicera sitt arbete kring hållbar utveckling och fördelarna med hållbara produkter och tjänster.

  • 7190.
    Van den Weghe, Matthias
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Informatics and Media.
    Creating Markup: Exploring the concept of users defining syntax2016Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    A variety of markup languages exist for formatting text and exporting to HTML. These languages are tailored to the needs in a specific context by specialising tags, selecting tags and limiting the number of possible distinctions to a subset of what is available in HTML. However, limiting the number of possible distinctions creates problems when changes occur in the context. The real world is ever-changing, thus that which models it must be able to reflect the changes in the operational environment to remain relevant and satisfactory. Incorporating new requirements and adjusting to the changes in requirements means adapting and evolving.

    This thesis explores giving document authors the possibility to extend and modify the repertoire of available markup tags when new user requirements demand it. What is presented is a prototype which allows the user to tailor the markup and also adapt it to changes in the environment. The system allows users to create their own set of markup tags, annotate their documents with them, and export a generated XML document. Users create the tag and assign a meaning to it, when changes occur in the requirements they can be implemented by modifying the tags, extending the repertoire by adding tags, or changing the meaning of a defined tag.

  • 7191.
    Van den Weghe, Matthias
    et al.
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Informatics and Media.
    Domeij, Johan
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Informatics and Media.
    Lösenordshantering: Systemvetares lösenordsvanor på Internet2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med denna uppsats är att ta reda på hur systemvetares lösenordsvanor ser ut. En kvantitativ enkätundersökning har genomförts med individer med anknytning till systemvetenskap vid Uppsala universitet. Enkäten utformades utifrån tidigare liknande studier och med hänsyn till lösenordsläckor där enkla lösenord visat sig vara vanligt förekommande. Analys av resultatet gav slutsatsen att systemvetare har bättre lösenordsvanor när det kommer till skapande av lösenord än deltagarna i den tidigare studien. Det förekommer dock brister bland systemvetarna gällande sättet att lagra lösenord där de utsätter lösenorden för onödig risk.

  • 7192.
    van der Velden, Maja
    et al.
    Institutt for Informatikk, Universitet i Oslo.
    Mörtberg, Christina
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Between Need and Desire: Exploring Strategies for Gendering Design2012In: Science, Technology and Human Values, ISSN 0162-2439, E-ISSN 1552-8251, Vol. 37, no 6, p. 663-683Article in journal (Refereed)
    Abstract [en]

    Script analysis is often used in research that focuses on gender and technology design. It is applied as a method to describe problematic inscriptions of gender in technology and as a tool for advancing more acceptable inscriptions of gender in technology. These analyses are based on the assumption that we can design technologies that do justice to gender. One critique on script analysis is that it does not engage with the emergent effects of design. The authors explore this critique with the help of two vignettes taken from their design research. In this article they ask: How to design for gender if gender and design are emergent? The authors present two design strategies, degendering design and undesigning design and propose a new approach to doing justice to gender in design. This perspective foregrounds ethics in the design process, in particular the accountability of technology designers.

  • 7193.
    Van Gemert-Pijnen, Lisette
    et al.
    University of Twente - Enschede, The Netherlands, , .
    Hettinga, MarikeWindesheim University of Applied Sciences, The Netherlands, , .Smedberg, ÅsaStockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    eTELEMED 2014, The Sixth International Conference on eHealth, Telemedicine, and Social Medicine2014Conference proceedings (editor) (Other (popular science, discussion, etc.))
  • 7194.
    van Laere, Joeri
    University of Skövde, School of Humanities and Informatics. University of Skövde, The Informatics Research Centre.
    Wandering Through Crisis and Everyday Organizing; Revealing the Subjective Nature of Interpretive, Temporal and Organizational Boundaries2013In: Journal of Contingencies and Crisis Management, ISSN 0966-0879, E-ISSN 1468-5973, Vol. 21, no 1, p. 17-25Article in journal (Refereed)
    Abstract [en]

    The results of a 6-year action research study on developing crisis management preparedness in Swedish municipalities reveal strong connections rather than sharp distinctions between crisis and non-crisis on interpretive, temporal and organizational dimensions. Confusion and debate about what is labelled as a crisis, when everyday ends and crisis begins, and who and who are not involved, may illuminate different views on what the scale, scope and inherent complexity of our' system is in crisis and in non-crisis. Crises are not only a brutal audit for the practitioners involved, but also for the scientific theories that explain crisis behaviour. Current definitions of crisis understate the subjective nature of interpretations of crisis and organizing. To better understand the muddiness of organizing, crisis management researchers might aim for portraying more feed-forward messiness in crisis study descriptions and applying less hindsight bias in their analyses. Such images could help practitioners realize that organizing is more complex and less controllable than currently might be pictured and assumed. A deeper exploration of concepts like duality, competing values and complex adaptive systems could serve both practitioners and researchers.

  • 7195.
    van Laere, Joeri
    et al.
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Aggestam, Lena
    University of Skövde, School of Business. University of Skövde, Enterprises for the Future.
    Understanding champion behaviour in a health-care information system development project – how multiple champions and champion behaviours build a coherent whole2016In: European Journal of Information Systems, ISSN 0960-085X, E-ISSN 1476-9344, Vol. 25, no 1, p. 47-63Article in journal (Refereed)
    Abstract [en]

    Champions are commonly suggested as a means of promoting the adoption of information systems. Since there are many different definitions of the concepts of champion and champion behaviour in the literature, practitioners and researchers may be confused about how to exactly use these concepts. A qualitative analysis of a single case study in a Swedish health-care organisation enabled us to explain how different champion behaviours relate to each other and how multiple champions interact. Combining our rich case observations with an analysis of champion literature reveals how champion behaviours form a coherent and meaningful whole in which networks of different types of champions at different levels in an organisation utilise their network of relations, their knowledge of the organisation and their insight into strategic decision-making politics to time and orchestrate the framing of innovations and the involvement of the right people. In conclusion, championing is a complex performance of contextually dependent collective social interaction, varying over time, rather than a heroic act of one individual promoting an idea. Future studies need to focus more on how the relations between different champions and their behaviours develop across innovations and over time, in order to develop a richer understanding of championing.

  • 7196.
    van Laere, Joeri
    et al.
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Berggren, Peter
    Linköping University, Sweden.
    Gustavsson, Per
    Combitech, Sweden.
    Ibrahim, Osama
    Stockholm University, Sweden.
    Johansson, Björn
    Linköping University, Sweden.
    Larsson, Aron
    Mittuniversitetet, Avdelningen för informations- och kommunikationssystem.
    Lindqwister, Towe
    Combitech, Sweden.
    Olsson, Leif
    Mittuniversitetet, Avdelningen för informations- och kommunikationssystem.
    Wiberg, Christer
    Combitech, Sweden.
    Challenges for critical infrastructure resilience: cascading effects of payment system disruptions2017In: / [ed] Tina Comes, Frédérick Bénaben, Chihab Hanachi, Matthieu Lauras, Aurélie Montarnal, ISCRAM, 2017, Vol. 14, p. 281-292, article id 1464Conference paper (Refereed)
    Abstract [en]

    Critical infrastructures become more and more entangled and rely extensively on information technology. Adeeper insight into the relationships between critical infrastructures enables the actors involved to more quicklyunderstand the severity of information technology disruptions and to identify robust cross-functional mitigatingactions. This study illustrates how and why disruptions in the payment system in Sweden could create cascadingeffects in other critical infrastructures with potentially severe consequences for many citizens, governmentinstitutions and companies. Data from document studies, interviews and workshops with field experts revealseven challenges for collective cross-functional critical infrastructure resilience that need to be dealt with: 1)Shortage of food, fuel, cash, medicine; 2) Limited capacity of alternative payment solutions; 3) Cities are morevulnerable than the countryside; 4) Economically vulnerable groups in society are more severely affected; 5)Trust maintenance needs; 6) Crisis communication needs; 7) Fragmentation of responsibility for criticalinfrastructures across many actors.

  • 7197.
    Van, Nguyen Hong
    et al.
    KTH, School of Information and Communication Technology (ICT), Computer and Systems Sciences, DSV.
    Popov, O.
    Popova, I.
    Combined model for congestion control2006In: Proceedings of the International Conference on Information Technology Interfaces, ITI, 2006, p. 657-662Conference paper (Refereed)
    Abstract [en]

    The growth of multimedia applications on the Internet made at least one fifth of the total network traffic to run over UDP. Unlike TCP, UDP is unresponsive to network congestion. This may cause, inter alia, bandwidth starvation of responsive flows, severe and prolonged congestions or in the worst-case scenario a congestion collapse. Hence, the coexistence of both protocols on fair-share premises converges towards impossibility. The paper deals with a new approach to solving the problem of taming down the unresponsive flows. By using some of the desirable properties of mobile agents, the system is able to control the influx of non-TCP or unresponsive flows into the network. Various functions performed by mobile agents monitor non-TCP flows, calculate sending rates and modify their intensity according to the needs of the network to attain as good performance as it is possible.

  • 7198.
    Vanhauer, Marleen
    Umeå University, Faculty of Social Sciences, Department of Informatics.
    Global Family Networking for the Elderly: Evaluation and Redesign of ModernFamilies.net2009Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This paper, the corresponding wireframe documentation including the functional prototype and flowchart document the evaluation and redesign of the beta version of the social networking platform ModernFamilies.net. In order to reveal possible usability flaws for people of different generations, in particular the elderly, a user-centered design approach including an expert review, diary studies and interviews were conducted. The findings reflected the need for consistency and feedback in general. For young children, the concept of the site appeared to behard to grasp. Experienced users found the access and management of relatives cumbersome. Most importantly, the elderly, novice computer users had a hard time getting started with the site on their own because they did not have access to a PC nor internet at their home. The latter and the fact, that some issues might never be solved by traditional usability testing because the user just feels overwhelmed by the vast amount of communication features he is faced with today calls for alternative, more intelligent, ambient interfaces. However, we came to the conclusion that although evaluation of such new technologies with elderly people is not alwayseasy, it is best to be conducted in the participants home or a similar environment.

  • 7199.
    Vargas Chevez, Norman Antonio
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Johannesson, Paul
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    Rusu, Lazar
    Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
    A unified strategic business and IT alignment model: A study in the public universities of Nicaragua2010In: 16th Americas Conference on Information Systems (AMCIS 2010), AISeL , 2010Conference paper (Other academic)
  • 7200.
    Vargas Chevez, Norman
    KTH, School of Information and Communication Technology (ICT), Computer and Systems Sciences, DSV.
    A unified strategic business and IT alignment model: A study in the public universities of Nicaragua2010Licentiate thesis, monograph (Other academic)
    Abstract [en]

    A number of attempts have been made to define strategic business and information technology (IT) alignment; several representations of what it is are available in academic and practitioners’ fields. The literature suggests that firms need to achieve strategic business and IT alignment to be competitive. Strategic business and IT alignment impact business performance and IT effectiveness. We propose a unified strategic business and IT alignment model based on four strategic business and IT alignment models: Strategic Alignment Model (SAM), Strategic Alignment Maturity Model (SAMM), information system strategic alignment model and an operational model of strategic alignment. I argue that such a unified model will provide a better understanding of the nature and key aspects of strategic business and IT alignment from different, and sometimes complementary, theories. The unified model represents the concepts and instruments used in these four strategic businesses and IT alignment models. Our principal research goal is to pave the way to develop a common understanding between the different models. The components of the unified strategic business and IT alignment model were ranked with a group of IT experts and business experts from four public universities in Nicaragua. The result can be used as a basis for improving strategic business and IT alignment.

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