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  • 151.
    Anderson, Karen
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier.
    Samuelsson, Göran
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier.
    Morner Jansson, Marie
    Benchmarking Information Management Practice and Competence in Swedish Organizations2011Ingår i: Proceedings of the 5th European Conference on Information Management and Evaluation: University of Insubria, Como, Italy. 8-9 September 2011 / [ed] Walter Castelnovo and Elena Ferrari, Reading, UK: Academic Conferences Limited, 2011, s. 28-36Konferensbidrag (Refereegranskat)
    Abstract [en]

    As organizations transform towards e-service provision and operations sophisticated, organization-wide approaches to information management are required. However, there is reason to believe that few organizations have developed a fully holistic approach to thinking about developing and managing their information assets to ensure their current and future accessibility and usability. There is an increasing awareness of the need to design systems that ensure information is accessible and re-usable, yet vital information often becomes increasingly inaccessible over time, to the disadvantage of business intelligence, business needs, customer service and regulatory requirements. An extensive survey of the state of the art of information management within Swedish organizations was undertaken to gain an understanding of current approaches, what competence is currently available within organizations and what competencies are perceived to be lacking or need development to ensure sustainable management of information as a business asset. This paper presents insights into how well or poorly records managers’ and archivists’ expertise is incorporated into whole- of-organization strategic planning for information management. It was rare to find collaboration between enterprise information architects and IT professionals with the recordkeeping professionals, who have expertise in structuring information and metadata as well as system requirements that contribute to ensuring long-term preservation, which would potentially minimize the proliferation of legacy systems from which records and information are very costly or impossible to migrate or extract. Many archivists considered that it is not their role to participate in wider information management strategies, preferring to focus on the capture of records into an ’e-archive’ without recognizing that information in the archive is a potentially re-usable business asset. This initial research contributes to an understanding of information cultures within organizations. It is intended to be used as a benchmark: follow-up studies are planned at regular intervals in the future to measure change in practice, attitudes and professional alliances to improve information management.

  • 152.
    Anderson, Kristin
    Linköpings universitet, Institutionen för systemteknik, Informationsteori. Linköpings universitet, Tekniska högskolan.
    Tree Structures in Broadcast Encryption2005Licentiatavhandling, monografi (Övrigt vetenskapligt)
    Abstract [en]

    The need for broadcast encryption arises when a sender wishes to securely distribute messages to varying subsets of receivers, using a broadcast channel, for instance in a pay-TV scenario. This is done by selecting subsets of users and giving all users in the same subset a common decryption key. The subsets will in general be overlapping so that each user belongs to many subsets and has several different decryption keys. When the sender wants to send a message to some users, the message is encrypted using keys that those users have. In this thesis we describe some broadcast encryption schemes that have been proposed in the literature. We focus on stateless schemes which do not require receivers to update their decryption keys after the initial keys have been received; particularly we concentrate on the Subset Difference (SD) scheme.

    We consider the effects that the logical placement of the receivers in the tree structure used by the SD scheme has on the number of required transmissions for each message. Bounds for the number of required transmissions are derived based on the adjacency of receivers in the tree structure. The tree structure itself is also studied, also resulting in bounds on the number of required transmissions based on the placement of the users in the tree structure.

    By allowing a slight discrepancy between the set of receivers that the sender intends to send to and the set of receivers that actually can decrypt the message, we can reduce the cost in number of transmissions per message. We use the concept of distortion to quantify the discrepancy and develop three simple algorithms to illustrate how the cost and distortion are related.

  • 153.
    Andersson, Anders
    et al.
    Statens väg- och transportforskningsinstitut, Trafik och trafikant,TRAF, Fordonsteknik och simulering, FTS.
    Buffoni, Lena
    IDA, Linköping University.
    Powertrain Model Assesment for Different Driving Tasks through Requirement Verification2016Ingår i: Proceedings of the 9th EUROSIM Congress on Modelling and Simulation, 2016Konferensbidrag (Refereegranskat)
    Abstract [en]

    For assessing whether a system model is a good candidate for a particular simulation scenario or choosing the best system model between multiple design alternatives it is important to be able to evaluate the suitability of the system model. In this paper we present a methodology based on finite state machine requirements verifying system behavior in a Modelica environment where the intended system model usage is within a moving base driving simulator. A use case illustrate the methodology with a Modelica powertrain system model using replaceable components and measured data from a Golf V. The achieved results show the importance of context of requirements and how users are assisted in finding system model issues.

  • 154.
    Andersson, Anders
    et al.
    Statens väg- och transportforskningsinstitut, Trafik och trafikant,TRAF, Fordonsteknik och simulering, FTS.
    Kharrazi, Sogol
    Statens väg- och transportforskningsinstitut, Trafik och trafikant,TRAF, Fordonsteknik och simulering, FTS.
    A Framework for Credibility Assessment of a Powertrain Model in Driving Simulator Studies2016Ingår i: Proceedings of the 36th FISITA World Automotive Congress, 2016Konferensbidrag (Refereegranskat)
    Abstract [en]

    When performing a driving simulator study, validity of the vehicle model for the intended driving task is of key importance; otherwise, the reliability of the study results might be jeopardized. In this paper a framework for real-time credibility assessment of the simulated longitudinal dynamics by a powertrain model in a moving base driving simulator is presented. The framework consists of the physical system model and a quality model which run in parallel in real time. The developed framework has been evaluated by offline simulations, as well as in real-time in a moving base driving simulator. The evaluation results showed that the developed framework can accurately capture the validity of the powertrain model in different driving conditions and provide the credibility level of the simulation results to the simulator operator in real-time.

  • 155.
    Andersson, Annika
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Digital divides revisited: towards a model for analysis2004Ingår i: Electronic government: Proceedings of the third international conference, EGOV 2004, Zaragoza, Spain, August 30 - September 3, 2004 / [ed] Roland Traunmüller, Berlin: Springer , 2004, s. 289-292Konferensbidrag (Refereegranskat)
    Abstract [en]

    This paper presents a model for categories of divides, and how these categories are interrelated. The factors are found by a literature study from different countries attempting to measure various divides. The model is based on earlier research on the ‘divide’ and includes: physical access, autonomy of use, know-how and motivation. Depending on the type of digital divide and the local situation, rectifying efforts must address the most crucial factor, which could be any of the four. The paper also introduces the nature and amount of different proposed divides, and relations among factors.

  • 156.
    Andersson, Annika
    Örebro universitet, Handelshögskolan vid Örebro universitet.
    Learning e-Learning: the restructuring of students beliefs and assumptions about learning2010Ingår i: International Journal on E-learning, ISSN 1537-2456, E-ISSN 1943-5932, Vol. 9, nr 4, s. 435-461Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper builds on a case study on e-learning in Sri Lanka with focus on students’ underlying beliefs about how one learns. E-learning programs are most often set up with the assumption that students should think, act and learn independently and with underlying values of constructivism and learner–centred learning. For students used to classroom-based, didactic education the transition to the e-learning paradigm is, however, neither predetermined nor immediate. The objective of this paper is to find out if, and how, the e-learning practice manages to transform students into more independent and self sustaining learners. By drawing on Structuration Theory this study analyzes and compares novice and experienced students’ assumptions about learning when asking for a particular support function, because support needs should change if students start adopting the e-learning view on how learning is achieved. Findings show that students increasingly adopt the e-learning view on learning as they progress through the program. Students take increasingly more ownership of their learning and the teacher is no longer seen as the container of all knowledge. The importance of discussions also increases over time indicating that knowledge is no longer seen as being transmitted but rather created.

  • 157.
    Andersson, Annika
    Örebro universitet, Handelshögskolan vid Örebro universitet.
    Letters from the field: e-learning students change of learning behaviour in Sri Lanka and Bangladesh2008Ingår i: Proceedings of ECEL 2008: 7th European conference on e-Learning, 2008, s. 29-37Konferensbidrag (Refereegranskat)
    Abstract [en]

    This paper reports the findings from two case studies on e-learning in Bangladesh and Sri Lanka. In these countries much hope is set on e-learning as a means to disseminate education to a larger population, but statistics show that drop out rates from e-learning courses are much higher than from traditional, classroom based, courses. In this paper it is argued that one reason for this is that the introduction of e-learning and a more student-centred learning model involves a drastic shift for students who are brought up in very teacher-centred didactic educational cultures. In order to investigate how this change in learning is perceived by its main stakeholders (i.e. the students) visits to learning centres in Sri Lanka and Bangladesh were made during 2007 and 2008. To capture the students’ opinions an open approach was chosen where students were asked to write letters about which major challenges they experience in changing their learning behaviour and completing the courses. Altogether the study is based on 107 student letters that have been analyzed and coded based on major differences and challenges identified by the students. Findings show that most students find learning on their own to be the major difference. They find this challenging because they feel very distant and because they do not know how to learn on their own. They have difficulties in managing their time and a lack of flexibility combined with a sloppy administration makes it even worse. Students used to being spoon-fed and learning by memorizing obviously need much support in taking ownership of their own learning in order to be able to learn by themselves. By comparing and mapping these findings to solutions suggested by existing research this study therefore suggests that support functions should be provided for students on ‘how to be an online learner’ and on ‘how to learn by yourself’. The teacher interaction and presence should also, at least in the early stages of the course, be frequent and active in order to make the student confident in his or hers ability to learn on their own. Finally, course flexibility (in regards to delivery mode and pace) should be high and much effort should be put into creating a supportive and well-organized administration

  • 158.
    Andersson, Annika
    Örebro universitet, Handelshögskolan vid Örebro universitet.
    Seven major challenges for e-learning in developing countries: Case study eBIT, Sri Lanka2008Ingår i: International Journal of Education and Development using ICT, ISSN 1814-0556, Vol. 4, nr 3Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    By using an extensive framework for e-learning enablers and disablers (including 37 factors) this paper sets out to identify which of these challenges are most salient for an e-learning course in Sri Lanka. The study includes 1887 informants and data has been collected from year 2004 to 2007, covering opinions of students and staff. A quantitative approach is taken to identify the most important factors followed by a qualitative analysis to explain why and how they are important. The study identified seven major challenges in the following areas: Student support, Flexibility, Teaching and Learning Activities, Access, Academic confidence, Localization and Attitudes. In this paper these challenges will be discussed and solutions suggested.

  • 159.
    Andersson, Annika
    et al.
    Örebro universitet, Handelshögskolan vid Örebro universitet.
    Grönlund, Åke
    Örebro universitet, Handelshögskolan vid Örebro universitet.
    A Conceptual Framework for E-Learning in Developing Countries: A Critical Review of Research Challenges2009Ingår i: Electronic Journal of Information Systems in Developing Countries, ISSN 1681-4835, E-ISSN 1681-4835, Vol. 38, nr 8, s. 1-16Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper presents a critical review of research on challenges for e-learning with a particular focus on developing countries. A comprehensive literature review including 60 papers on e-learning challenges was undertaken for the purpose of understanding how to implement e-learning in developing countries. Research questions were: what has existing research identified as the major challenges for e-learning, and, what differences, if any, are there between developing countries and developed countries in this respect? The literature study found 278 papers which were condensed to 60 based on exclusion and inclusion criteria designed to find papers of best quality as well as papers that clearly investigated well-defined challenges. The research found 30 specific challenges which were grouped into four categories, viz.: courses, individuals, technology and context. The overall conclusion is that these challenges are equally valid for both developed and developing countries; however in developing countries more papers focus on access to technology and context whereas in developed countries more papers concern individuals. A further finding is that most papers focus on one or two categories of challenges; few papers exhibit a comprehensive view. Because challenges are interrelated, based on the findings we propose a conceptual framework of emerging issues for e-learning in developed and developing countries. The framework is useful to guide both practice and research.

  • 160.
    Andersson, Annika
    et al.
    Örebro universitet, Handelshögskolan vid Örebro universitet.
    Hatakka, Mathias
    Högskolan Dalarna, Akademin Industri och samhälle, Informatik. Örebro universitet, Handelshögskolan vid Örebro universitet.
    Increasing interactivity in distance educations: Case studies Bangladesh and Sri Lanka2010Ingår i: Information Technology for Development, ISSN 0268-1102, E-ISSN 1554-0170, Vol. 16, nr 1, s. 16-33Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper describes how distance educations in developing countries can enhance interactivityby means of information and communication technologies. It is argued that e-learning involvesa shift in the educational structure from traditional transmission of knowledge to interactivecreation of knowledge. Our case studies are two distance educations in Bangladesh and SriLanka that use different technologies for implementing interactivity; Internet and computersin one case and video and mobile phones in the other. The findings are analyzed based onStructuration Theory and we compare the two approaches based on emerging norms andbeliefs. Findings from both cases show the concurrent enactment of both the transmissionand the interactive structure. Whereas peer collaboration and the use of self-assessment toolsmake students take more ownership of their learning, we also found the idea of a classroomwith an instructive teacher to be deeply rooted in the students’ minds.

  • 161.
    Andersson, Annika
    et al.
    Örebro universitet, Handelshögskolan vid Örebro universitet.
    Hatakka, Mathias
    Örebro universitet, Handelshögskolan vid Örebro universitet.
    Increasing interactivity in distance educations: Case studies Bangladesh and Sri Lanka2010Ingår i: Information Technology for Development, ISSN 0268-1102, E-ISSN 1554-0170, Vol. 16, nr 1, s. 16-33Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper describes how distance educations in developing countries can enhance interactivityby means of information and communication technologies. It is argued that e-learning involvesa shift in the educational structure from traditional transmission of knowledge to interactivecreation of knowledge. Our case studies are two distance educations in Bangladesh and SriLanka that use different technologies for implementing interactivity; Internet and computersin one case and video and mobile phones in the other. The findings are analyzed based onStructuration Theory and we compare the two approaches based on emerging norms andbeliefs. Findings from both cases show the concurrent enactment of both the transmissionand the interactive structure. Whereas peer collaboration and the use of self-assessment toolsmake students take more ownership of their learning, we also found the idea of a classroomwith an instructive teacher to be deeply rooted in the students’ minds.

  • 162.
    Andersson, Annika
    et al.
    Örebro universitet, Handelshögskolan vid Örebro universitet.
    Hedström, Karin
    Örebro universitet, Handelshögskolan vid Örebro universitet.
    Grönlund, Åke
    Örebro universitet, Handelshögskolan vid Örebro universitet.
    Learning from e-learning: emerging constructive learning practices2009Ingår i: Doing IT research that matters, 2009Konferensbidrag (Refereegranskat)
    Abstract [en]

    This research is situated within the field of Information and Communication Technologies for Development (ICT4D) and asks if ICT use can make learning practices change. While constructive learning practices are critical to both individual and societal development, repetitive learning practices are the norm in many developing countries. The study is based on observations and in-depth interviews and uses a structurational approach to understand if and how students views of learning change during an e-learning program in Sri Lanka. We found four constructive learning practices that emerged through technology use; individual exploring, interaction with peers, interaction with teachers, and taking responsibility of the learning. Many constructive learning practices emerged outside the LMS used, in students’ voluntary uses of publicly available resources on the Internet. The study shows that technology use can play a positive role for development, provided an open environment is available; students learn constructive practicesfrom e-learning.

  • 163.
    Andersson, Annika
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Räisänen, Kalle
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Using class blogs in 1:1 schools: searching for unexplored opportunities2014Ingår i: Computers in The Schools, ISSN 0738-0569, E-ISSN 1528-7033, Vol. 31, nr 3, s. 173-196Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This article focuses on class blogs and presents results from 1:1schools in Sweden. While Swedish schools are increasingly usingWeb 2.0 technologies (e.g., wikis and blogs), most of this use is stillatanexperimentalstage.Tofurthertheunderstandingofhowblogsare and can be used, we compare class blogs used in practice withthe fast-growing literature in the field. Previous work suggests eightuses: collaboration, making assignments, journal writing, instruc-tion, posting supplemental material, community building, externalreaders, and prompting. In practice, we found blogs to be used ina fairly narrow way—mainly for instruction and posting supple-mental material. We hope that this article will inspire teachers tofurther their blog use.

  • 164.
    Andersson, Birger
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Bergholtz, Maria
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Johannesson, Paul
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Resource, Process, and Use – Views on Service Modeling2012Ingår i: Advances in Conceptual Modeling: ER 2012 Workshops CMS, ECDM-NoCoDA, MoDIC, MORE-BI, RIGiM, SeCoGIS, WISM, Florence, Italy, October 15-18, 2012. Proceedings / [ed] lvana Castano, Panos Vassiliadis, Laks V. Lakshmanan, Mong Li Lee, Springer Berlin/Heidelberg, 2012, s. 23-33Konferensbidrag (Refereegranskat)
    Abstract [en]

    Currently there exists a multitude of views of service creating problems for designers and users of models with respect to reasoning, description and classification of services. The diversity of conflicting views and definitions suggest that a multi-perspective approach is required to explicate the notion of service. The purpose of this paper is to introduce an integrated view of the service notion based on a literature survey. Our approach is to start with an analysis of service-as-a-resource and argue that this view will benefit from being complemented with a service-as-a-process view. These views are then integrated and represented in a conceptual model.

  • 165.
    Andersson, Birger
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Bider, Ilia
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Johannesson, Paul
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Perjons, Erik
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Towards a formal definition of goal-oriented business process patterns2005Ingår i: Business Process Management Journal, ISSN 1463-7154, E-ISSN 1758-4116, Vol. 11, nr 6, s. 650-662Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Purpose – Organizations of today are becoming ever more focused on their business processes. This has resulted in an increasing interest in using best practices for business process re-engineering. Two problems arise in connection to using best practices: how to find a best practice that suits particular purposes, and how to ensure that the process from the best practice has the same nature as the process under re-engineering. The purpose of this paper is to address these issues.

    Design/methodology/approach – The paper suggests using business process patterns, i.e. relatively high level business process models, for making near formal comparison of business processes. The paper analyzes widespread modeling techniques to find out which of them suits the task of building patterns for comparison. Based on this analysis, the state-flow modeling technique is chosen and first steps towards formal definition of business process patterns based on this technique are suggested.

    Findings – A pattern is defined based on the notions of state space, goal, as a surface in the state space, and valid movements towards the goal. A thinkable procedure of constructing patterns is demonstrated on two real-life examples. A hypothetical procedure for comparing process is suggested but it still needs to be verified in practice.

    Originality/value – The originality of the paper is the way the patterns are formulated and the underlying model, the state-flow view of processes, upon which the patterns are founded.

  • 166.
    Andersson, Birger
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Guarino, Nicola
    Johannesson, Paul
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Livieri, Barbara
    Towards an Ontology of Value Ascription2016Ingår i: Formal Ontology in Information Systems: Proceedings of the 9th International Conference (FOIS 2016), IOS Press, 2016, s. 331-344Konferensbidrag (Refereegranskat)
    Abstract [en]

    The analysis of value, value ascription mechanisms, and their motivating and influencing factors is useful for decision making processes of both customers and providers. In particular, enterprise modeling can greatly benefit from a proper understanding of value-related notions. Nonetheless, existing value models mainly focus on the value exchange between subjects, disregarding the understanding of “what” value is and of “why” something is valuable. In order to exploit the benefits of value analysis, a precise and rigorous conceptualization, based on foundational ontologies, is needed. To this aim, we present and discuss here a preliminary core ontology of value ascription and we discuss the main issues.

  • 167.
    Andersson, Birger
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Johannesson, Paul
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Zdravkovic, Jelena
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Aligning Goals and Services through Goal and Business Modelling2009Ingår i: Information Systems and E-Business Management, Vol. 7, nr 2009Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    E-services are used as the cornerstones for modelling interaction points of cooperating IT systems, within and between enterprises. So far, research and development of e-services have mainly focused on an operational perspective, such as the development of standards for message exchanges and service coordination. However, on a strategic level, the success of e-services depends on its ability to work as a medium for exchange of business values. In this paper, we present an approach that utilizes goal and business models as the foundation for designing e-services. The approach can be used to ensure that the developed e-services support the desired goals and business values of involved actors. A case st3dy from the Swedish health sector is used to ground and apply the presented approach.

  • 168.
    Andersson, Bo
    et al.
    Ekonomihögskolan, Lunds universitet.
    Keller, Christina
    Högskolan i Jönköping, Internationella Handelshögskolan, IHH, Informatik.
    Harness Mobility: Managing the Off-Task Property2010Ingår i: Global Perspectives on Design Science Research: The 5th International Conference on Design Science Research in Information Systems and Technology 2010, in St Gallen, Switzerland / [ed] Winter, R.,Zhao, J. L. & Aier, S., Berlin Heidelberg: Springer , 2010, s. 258-269Konferensbidrag (Refereegranskat)
    Abstract [en]

    Technological advancements in mobile computing and wireless networks open up to new applications and new user-groups in the mobile workforce. However, a considerable part of the mobile workforce, such as e.g. drivers or healthcare staff, is chiefly performing other tasks than interacting with their computers. As a result, they are not able to pay attention to computer interaction, making them mainly off computer tasks. The aim of the paper is to develop a design theory to manage off-task situations in mobile computing. Interviews were performed with developers of an information system comprising mobile devices for drivers. From the interviews, a design of an artifact and a design theory based on a strategy to automate routine administration task using place awareness is presented. The eight components of IS design theory by Gregor and Jones is applied as a theoretical framework.

  • 169.
    Andersson, Bo
    et al.
    Ekonomihögskolan, Lunds universitet.
    Keller, Christina
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för informatik och media.
    Harness mobility: Managing the off-task property2010Ingår i: DESRIST 2010: The 5th International Conference on Design Science Research in Information Systems and Technology 2010, in St Gallen, Switzerland / [ed] Stephan Aier, Springer , 2010Konferensbidrag (Refereegranskat)
    Abstract [en]

    Technological advancements in mobile computing and wireless networks open up to new applications and new user-groups in the mobile workforce. However, a considerable part of the mobile workforce, such as e.g. drivers or healthcare staff, is chiefly performing other tasks than interacting with their computers. As a result, they are not able to pay attention to computer interaction, making them mainly off computer tasks. The aim of the paper is to develop a design theory to manage off-task situations in mobile computing. Interviews were performed with developers of an information system comprising mobile devices for drivers. From the interviews, a design of an artifact and a design theory based on a strategy to automate routine administration task using place awareness is presented. The eight components of IS design theory by Gregor and Jones is applied as a theoretical framework.

  • 170.
    Andersson, Christer
    et al.
    Karlstads universitet, Institutionen för informationsteknologi.
    Camenisch, Jan
    IBM Zurich Research Laboratory, Switzerland.
    Crane, Stephen
    Hewlett-Packard Laboratories, UK.
    Fischer-Hübner, Simone
    Karlstads universitet, Institutionen för informationsteknologi.
    Leenes, Ronald
    Tilburg University, the Netherlands.
    Pearson, Siani
    Hewlett-Packard Laboratories, UK.
    Pettersson, John Sören
    Karlstads universitet, Institutionen för informationsteknologi.
    Sommer, Dieter
    IBM Zurich Research Laboratory, Switzerland.
    Trust in PRIME2005Ingår i: Proceedings of the 5th IEEE International Symposium on Signal Processing and IT, IEEE conference proceedings, 2005, s. 552-559Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    The PRIME project develops privacy enhancing identity management systems that allow users in various application areas such as e-commerce to regain control over their personal spheres. This paper introduces the PRIME technical architecture that also includes special trust-enhancing mechanisms, and shows how PRIME technologies can enhance privacy and trust of e-shopping customers. It also discusses the socio-psychological factors and HCI aspects influencing the end user's trust in privacy enhancing identity management, and shows why HCI research, user studies, and socio-psychological research, are necessary efforts to accompany system design.

  • 171.
    Andersson Hagiwara, Magnus
    et al.
    School of Health Sciences, University of Borås, Sweden.
    Andersson-Gäre, Boel
    Högskolan i Jönköping, Hälsohögskolan, The Jönköping Academy for Improvement of Health and Welfare. Högskolan i Jönköping, Hälsohögskolan, HHJ. IMPROVE (Improvement, innovation, and leadership in health and welfare).
    Elg, Mattias
    Division of Quality Technology and Management, Linköping University, Sweden.
    Interrupted time series versus statistical process control in quality improvement projects2016Ingår i: Journal of Nursing Care Quality, ISSN 1057-3631, E-ISSN 1550-5065, Vol. 31, nr 1, s. E1-E8Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    To measure the effect of quality improvement interventions, it is appropriate to use analysis methods that measure data over time. Examples of such methods include statistical process control analysis and interrupted time series with segmented regression analysis. This article compares the use of statistical process control analysis and interrupted time series with segmented regression analysis for evaluating the longitudinal effects of quality improvement interventions, using an example study on an evaluation of a computerized decision support system.

  • 172. Andersson, J.
    et al.
    Nellborn, C.
    Nilsson, Anders G.
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för informatik och projektledning.
    Tolis, C.
    Business Modelling - Konsortium förenar forskning vid tre högskolor1996Rapport (Övrigt vetenskapligt)
    Abstract [en]

    Syftet med business modelling projektet är att undersöka möjligheterna att överbrygga kommunikationsgapet mellan affärsansvariga och systemexperter via användning av gemensamma metoder och arbetssätt.



    Projektets mål är att utreda förutsättningarna för, samt ta fram ramverk för ett integrerat arbetssätt där metoder för affärs- verksamhets- och systemutveckling kombineras i metodkedjor (metoder med olika syfte) och metodallianser (metoder med liknande men kompletterande syfte).



    Projektet drivs av ett konsortium bestående av tre högskolor (Handelshögskolan i Stockholm, Kungliga Tekniska Högskolan och Linköpings universitet) i samverkan med fyra företag (ABB, Ericsson, Posten och Scania). Projektet finansierades av Nutek (numera Vinnova) för projektledning och forskarstuderande. I referensgruppen ingår professorer från de tre högskolorna och erfarna konsulter med spetskunskaper inom verksamhetsutveckling. Projektet slutdokumenterades i boken: "Perspectives on Business Modelling - Understanding and Changing Organisations" (Springer, 1999)

  • 173.
    Andersson, Jessica
    et al.
    Gothenburg Univ, Sweden.
    Larsson, Sofia
    Gothenburg Univ, Sweden.
    Ericsson, Morgan
    Gothenburg Univ, Sweden.
    Wingkvist, Anna
    Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för datavetenskap (DV). Linnaeus Univ, Vaxjo, Sweden..
    A Study of Demand-Driven Documentation in Two Open Source Projects2015Ingår i: 2015 48th Hawaii International Conference on System Sciences (HICSS), 2015, s. 5271-5279Konferensbidrag (Refereegranskat)
    Abstract [en]

    We investigate how demand-driven documentation is used by open source projects. Our study relies on questions and answers (i.e., demand-driven documentation) posted to Stack Overflow and focuses on two projects: Apache POI and Fennec (Firefox for Android). We find that the demand-driven documentation provided by respective community is of good quality and contributions are made within an acceptable amount of time. We conclude that demand-driven documentation can be suitable as a primary information source if other resources accompany it, e.g., websites. However, the suitability is closely related to size and activity of the project's community. We also investigate whether the type of project (e.g., API, application, product, etc.) matters, and find that given the nature of a forum, projects where the intended users are developers have larger and more active communities and are thus better suited for demand-driven documentation.

  • 174. Andersson, Magnus
    et al.
    Hjalmarsson, Anders
    Högskolan i Borås, Institutionen Handels- och IT-högskolan.
    Avital, Michel
    Peer-to-Peer Service Sharing Platforms: Driving Share and Share Alike on a Mass-Scale2013Konferensbidrag (Refereegranskat)
    Abstract [en]

    The sharing economy has been growing continuously in the last decade thanks to the proliferation of internet-based platforms that allow people to disintermediate the traditional commercial channels and to share excess resources and trade with one another effectively at a reasonably low transaction cost. Whereas early peer-to-peer platforms were designed to enable file sharing and goods trading, we recently witness the emergence of a new breed of peer-to-peer platforms that are designed for ordinary service sharing. Ordinary services entail in tangible provisions and are defined as an economic activity that generates immaterial benefits and does not result in ownership of material goods. Based on a structured analysis of 41 internet-based rideshare platforms, we explore and layout the unique characteristics of peer-to-peer service sharing platforms based on three distinct temporal patterns that entail specific consequences for platform use as well as provide insights about their overall design imperative.

  • 175. Andersson, Pär
    et al.
    Larsson, Niklas
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för informatik och projektledning.
    Webbapplikationsutveckling: Möjliga utvecklingsvägar ASP, PHP, Coldfusion med stöd av XML2001Rapport (Refereegranskat)
    Abstract [sv]

    Uppsatsen är en litteraturstudie med syftet att undersöka möjliga utvecklingsvägar för Imagon system AB vid utvecklandet av en webbanpassad version av dokumenthanteringssystemet IDA 2000. Uppsatsen riktar sig främst till beslutsansvariga på Imagon men även till andra som finner ämnet intressant. Vi utvärderar tre stora metoder för webbapplikationsutveckling, ASP, Cold fusion och PHP. Vi granskar även fördelar med att använda XML som ersättning för HTML vid utvecklingen. Vi rekommenderar att Imagon använder sig av ASP, framförallt därför att den grundläggande kompetens som behövs finns inom företaget. Vi rekommenderar även användande av XML, främst på grund av metodens framstående informationsstrukturering.

  • 176. Andersson, R.
    et al.
    Nilsson, Anders G.
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för informatik och projektledning.
    Den glömda kundgruppen: En leverantörsstudie av den svenska marknaden för standardsystem1996Ingår i: Management of Technology, ISSN 1102-5581, nr 3, s. 7-8Artikel i tidskrift (Övrigt vetenskapligt)
    Abstract [sv]

    Kan marknaden över administrativa standardsystem karakteriseras som en bransch i omvandling? Detta är en fråga som inspirerade oss till att undersöka hur leverantörer av standardiserade programvaror ser på sin roll idag och den närmaste framtiden. Vår bedömning är att den senska marknaden för standardystem kan utsättas för drastiska förändringar. En kraftig utslagning bland leverantörer och ett radikalt annorlunda produkt- och tjänsteutbud är några exempel

  • 177. Andersson, R.
    et al.
    Nilsson, Anders G.
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för informatik och projektledning.
    Standardsystem idag och i framtiden: En leverantörsstudie1996Rapport (Refereegranskat)
    Abstract [sv]

    Vårt övergirpande forskningsproblem avser att analysera nätverket av affärsrelationer mellan aktörer kring standardsystem på den svenska markanden. Med aktörer avses här kunder, leverantörer och olika former av tredje parter inom branschen för programvaror med kringliggande datorer och tjänster. Tidigare har forskningen kring SIV-metoden för anskaffning av standardsystem gett fördjupade kunskaper om kundens situation på marknaden. För närvarande undersöks hur leverantörer av standardsystem ser på sin roll i branschen.



    Som ett led i detta forskningsarbete genomförde vi under 1992 en leverantörsstudie av hur branschen kring standardsystem ser ut idag respektive kommer att utvecklas i framtiden. Vi har valt ut de 21 största leverantörerna av administrativa standardsystem som opererar på den svenska marknaden. Intervjuer genomfördes med VD, vice VD och/eller i vissa fall med marknadschefen. Intervjuerna ägde rum på företagen under ca 3 timmar och följde en i förväg utarbetad frågemall för att underlätta jämförelese mellan leverantörerna. Frågorna berörde t.ex. företagets affärsidé, kombinerat produkt/tjänsteutbud, konkurrenter resp samarbetspartners, idealt versus faktiskt kundbeteende och visioner om framtidstrender.



    Rapporten har ett fokus på intressanta generella mönster och "highlights" i stället för detaljuppgifter om varje specifik leverantör. Analyserna kretsar kring frågeställningar som glömda kundgrupper, totalleverantör versus nischleverantörer, produktgenerationer ("release"-hantering), långsiktiga affärsrelationer, teknologins betydelse (t.ex. användargränssnitt) och kravspecifikationens roll. Efter feedback på remissutgåvan har vi utökat slutrapporten med några reflektioner kring vad som kännetecknar en konkurrenskraftig leverantör, konsekvenser av den tekniska utvecklingen och om hur vi kan applicera ett nätverkssynsätt inom branschen för administrativa standardsystem.



    Rapporten är presenterad på:



    VITS Höstseminarium - Ett forum för kunskapsutbyte om forskning om informationsssystemutveckling, 22-23 november 1995, Insitutionen för Datavetenskap (IDA), Linköpings universitet

  • 178. Andersson, R.
    et al.
    Nilsson, Anders G.
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för informatik och projektledning.
    Standardsystemmarknaden: En bransch i omvandling1996Ingår i: Lundeberg, M., Sundgren, B (red.) (1996). Att Föra Verksamheten Framåt: Människor och informationssystem i samverkan, EFI's årsbok, sid. 57-80, Lund: Studentlitteratur , 1996Kapitel i bok, del av antologi (Refereegranskat)
    Abstract [sv]

    Kan den svenska marknaden över administrativa standardsystem karakteriseras som en bransch i omvandling? Detta är en fråga som inspirerat oss till att undersöka hur samspelet mellan leverantörer och kunder av standardsystem ser ut idag och i framtiden. Eftersom det finns många olika uppfattningar om vad standardystem egentligen är inleder vi med att precisera innebörden i begreppet. Vad som händer inom branschen och vilka förändringar av standardsystem som kan skönjas är vårt huvudsakliga tema för kapitlet. Vi kommer att ha ett fokus på två intressant trender på marknaden, nämligen utvecklingen mot långsiktiga affärsrelationer och så kallade komponentbaserade standardsystem.



    Bokkapitlet har preseterats som en artikel på en nationell konferens:



    Optimala affärssystem - Hur du framgångsrikt integrerar affärsprocesserna i Din verksamhet, 30 november - 1 december 1998, Konferensen, Euroforum, Stockholm

  • 179. Andersson, R.
    et al.
    Nilsson, Anders G.
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för informatik och projektledning.
    The Standard Application Package Market: An Industry in Transition1996Ingår i: Lundeberg, M., Sundgren, B. (Eds.) Advancing Your Business: People and Information Systems in Concert, EFI yearbook, Chapter III, Stockholm: EFI, Stockholm School of Economics , 1996Kapitel i bok, del av antologi (Refereegranskat)
    Abstract [en]

    Can the Swedish market in standard application packages be charaterized as an industry in transition? This is a question that inspired us to investigate the interplay between vendors and customers of standard application packages apperas today and will appear in the future. Since there are many opinions concerning what standard application packages actually are, we shall begin by defining the concept. Our main theme in the chapter is the events and changes which can be observed in the industry. We shall focus on two interesting trends in the market, namely the development of long-term business relationships and so-called component-based packages

  • 180.
    Andersson, Ulf
    et al.
    Högskolan Väst, Institutionen för ekonomi och it, Avd för medieproduktion.
    Josefsson, Pernilla
    Högskolan Väst, Institutionen för ekonomi och it, Avd för medieproduktion.
    Pareto, Lena
    Högskolan Väst, Institutionen för ekonomi och it, Avd för medieproduktion.
    Challenges in designing virtual environments training social skills for children with autism2006Ingår i: Proceedings of 6th International Conference on Disability, Virtual Reality and Associated Technologies, University of Reading , 2006, s. 35-43Konferensbidrag (Refereegranskat)
    Abstract [en]

    The purpose of the study is to explore particular challenges faced when designing virtual environments for children with autism, with the purpose of training social skills. Our findings are based on studying autistic behaviour during three years (primary and secondary sources), analysis of related system and other computer mediated assistive technology, as well as general game design. From these studies we have identified eight critical design parameters that need to be adjustable in a system suitable for autistic persons. The parameters importance, their variation range, as well as the need for independent adjustment of these were estimated and verified by experienced expert pedagogues.

  • 181.
    Andersson, Ulf
    et al.
    Högskolan Väst, Institutionen för ekonomi och it, Avd för medieproduktion.
    Josefsson, Pernilla
    Högskolan Väst, Institutionen för ekonomi och it, Avd för medieproduktion.
    Pareto, Lena
    Högskolan Väst, Institutionen för ekonomi och it, Avd för medieproduktion.
    Challenges in designing virtual environments training social skills for children with autism2006Ingår i: International Journal on Disability and Human Development, ISSN 1565-012X, Vol. 5, nr 2, s. 105-111Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The aim of the study was to explore particular challenges faced when designing virtual environments for children with autism, with the purpose of training social skills. Our findings are based on studying autistic behavior during three years (primary and secondary sources), analysis of related system and other computer mediated assistive technology, as well as general game design. From these studies, we have identified eight critical design parameters that must be adjustable in a system suitable for autistic persons. The importance of the parameters, their variation range, as well as the need for independent adjustment of these were estimated and verified by experienced expert pedagogues. Copyright © Freund Publishing House Limited.

  • 182.
    Andler, Sten F.
    Högskolan i Skövde, Institutionen för kommunikation och information.
    Information Fusion from Databases, Sensors and Simulations: Annual Report 20052006Rapport (Övrigt vetenskapligt)
  • 183.
    Andler, Sten F.
    et al.
    Högskolan i Skövde, Institutionen för datavetenskap.
    Berndtsson, Mikael
    Högskolan i Skövde, Institutionen för datavetenskap.
    Eftring, Bengt
    Högskolan i Skövde, Institutionen för datavetenskap.
    Eriksson, Joakim
    Högskolan i Skövde, Institutionen för datavetenskap.
    Hansson, Jörgen
    Högskolan i Skövde, Institutionen för datavetenskap.
    Mellin, Jonas
    Högskolan i Skövde, Institutionen för datavetenskap.
    DeeDS: A Distributed Active Real-Time Database System1995Rapport (Övrigt vetenskapligt)
    Abstract [en]

    DeeDS combines active database functionality with critical timing constraints and integrated system monitoring. Since the reactive database mechanisms, or rule management system, must meet critical deadlines, we must employ methods that make triggering of rules and execution of actions predictable. We will focus on the scheduling issues associated with dynamic scheduling of workloads where the triggered transactions have hard, firm or soft deadlines, and how transient overloads may be resolved by substituting transactions by computationally cheaper ones. The rationale for a loosely coupled general purpose event monitoring facility, that works in tight connection with the scheduler, is presented. For performance and predictability, the scheduler and event monitor are executing on a separate CPU from the rest of the system. Real-time database accesses in DeeDS are made predictable and efficient by employing methods such as main memory resident data, full replication, eventual consistency, and prevention of global deadlocks.

  • 184.
    Andler, Sten F.
    et al.
    Högskolan i Skövde, Institutionen för kommunikation och information.
    Brohede, Marcus
    Högskolan i Skövde, Institutionen för kommunikation och information.
    Information Fusion from Databases, Sensors and Simulations: Annual Report 20062007Rapport (Övrigt vetenskapligt)
  • 185.
    Andler, Sten F.
    et al.
    Högskolan i Skövde, Institutionen för kommunikation och information.
    Brohede, Marcus
    Högskolan i Skövde, Institutionen för kommunikation och information.
    Information Fusion from Databases, Sensors and Simulations: Annual Report 20072008Rapport (Övrigt vetenskapligt)
  • 186.
    Andler, Sten F.
    et al.
    Högskolan i Skövde, Institutionen för kommunikation och information.
    Brohede, Marcus
    Högskolan i Skövde, Institutionen för kommunikation och information.
    Information Fusion from Databases, Sensors and Simulations: Annual Report 20082009Rapport (Övrigt vetenskapligt)
  • 187. Andra, Siibak
    et al.
    Michael, Forsman
    Hernwall, Patrik
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Employing creative research methods with tweens in Estonia and Sweden: reflections on a case-study on multimodal virtual identity constructions on social networking sites2014Ingår i: Methods for analyzing social media / [ed] Klaus Bredl, Julia Hunniger, Jakob Linaa Jensen, London: Routledge, 2014Kapitel i bok, del av antologi (Övrigt vetenskapligt)
  • 188.
    Andrenucci, Andrea
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Creating a Bilingual Psychology Lexikon for Cross Lingual Question Answering, A Follow-up Study2010Ingår i: WEBIST 2010 Abstracts, Institute for Systems and Technologies of Information, Control Communication , 2010Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    This paper discusses a follow-up study aimed at investigating the extraction of word relations from a medical parallel corpus in the field of Psychology. Word relations are extracted in order to create a bilingual lexicon for cross lingual question answering between Swedish and English on a medical portal. Six different variants of the corpus were utilized: word inflections with and without POS tagging, syntactically parsed word inflections, lemmas with and without POS tagging, syntactically parsed lemmas. The purpose of the study was to analyze the quality of the word relations obtained from the different versions of the corpus and to understand which version of the corpus was more suitable for extracting a bilingual lexicon in the field of psychology. The word alignments were evaluated with the help of reference data (gold standard) and with measures such as precision and recall.

  • 189.
    Andrenucci, Andrea
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Experiments with Cross-Language Information Retrieval on a Health Portal for Psychology and Psychotherapy2016Ingår i: Exploring Complexity in Health: An Interdisciplinary Systems Approach / [ed] Alexander Hoerbst, Werner O. Hackl, Nicolette de Keizer, Hans-Ulrich Prokosch, Mira Hercigonja-Szekeres, Simon de Lusignan, IOS Press, 2016, s. 75-79Konferensbidrag (Refereegranskat)
    Abstract [en]

    Few studies have been performed within cross-language information retrieval (CLIR) in the field of psychology and psychotherapy. The aim of this paper is to to analyze and assess the quality of available query translation methods for CLIR on a health portal for psychology. A test base of 100 user queries, 50 Multi Word Units (WUs) and 50 Single WUs, was used. Swedish was the source language and English the target language. Query translation methods based on machine translation (MT) and dictionary look-up were utilized in order to submit query translations to two search engines: Google Site Search and Quick Ask. Standard IR evaluation measures and a qualitative analysis were utilized to assess the results. The lexicon extracted with word alignment of the portal's parallel corpus provided better statistical results among dictionary look-ups. Google Translate provided more linguistically correct translations overall and also delivered better retrieval results in MT.

  • 190.
    Andresen, Christoffer
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Hodosi, Georg
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Saprykina, Irina
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rusu, Lazar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    User Acceptance of a Software Tool for Decision Making in IT Outsourcing: A Qualitative Study in Large Companies from Sweden2010Ingår i: Knowledge Management, Information Systems, E-Learning, and Sustainability Research: Proceedings, Part I / [ed] Miltiadis D. Lytras, Patricia Ordonez De Pablos, Adrian Ziderman, Alan Roulstone, Hermann Maurer, Jonathan B. Imber, Springer, 2010, s. 277-288Konferensbidrag (Refereegranskat)
    Abstract [en]

    Decisions for IT outsourcing are very complex and needs to be supported by considerations based on many (multiple) criteria. In order to facilitate the use of a specific tool by a decision-maker in IT outsourcing, we need to find out whether such a tool for this purpose will be accepted or rejected or what improvements must be added to this tool to be accepted by some IT decision makers in large companies from Sweden.

  • 191.
    Andrighetto, Giulia
    et al.
    Institute of Cognitive Science and Technology (CRI), Rome.
    Boella, Guido
    University of Torino.
    Sichman, Jaime
    University of Sao Paulo.
    Verhagen, Harko
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Preface to Special Issue on Social Networks and Multiagent Systems2011Ingår i: Computational and mathematical organization theory, ISSN 1381-298X, E-ISSN 1572-9346, Vol. 14, nr 4, s. 315-317Artikel i tidskrift (Refereegranskat)
  • 192. Andujar, Carlos
    et al.
    Schiaffonati, Viola
    Schreiber, Fabio A.
    Tanca, Letizia
    Tedre, Matti
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    van Hee, Kees
    van Leeuwen, Jan
    The role and relevance of experimentation in informatics2013Rapport (Övrigt vetenskapligt)
    Abstract [en]

    Informatics is a relatively young field within science and engineering. Its research and development methodologies build on the scientific and design methodologies in the classical areas, often with new elements to it. We take an in-depth look at one of the less well-understood methodologies in informatics, namely experimentation. What does it mean to do experiments in informatics? Does it make sense to ‘import’ traditional principles of experimentation from classical disciplines into the field of computing and information processing? How should experiments be documented? These are some of the questions that are treated. The report argues for the key role of empirical research and experimentation in contemporary Informatics. Many IT systems, large and small, can only be designed sensibly with the help of experiments. We recommend that professionals and students alike are well-educated in the principles of sound experimentation in Informatics. We also recommend that experimentation protocols are used and standardized as part of the experimental method in Informatics.

  • 193.
    Angelakis, Vangelis
    et al.
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska högskolan.
    Askoxylakis, Ioannis
    FORTH, Institute of Computer Science, Greece.
    Fowler, Scott
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska högskolan.
    Gundlegård, David
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska högskolan.
    Traganitis, Apostolos
    FORTH, Institute of Computer Science, Greece.
    Yuan, Di
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska högskolan.
    Security and Resilience in Cognitive Radio Networks2011Ingår i: European Research Consortium for Informatics and Mathematics Magazine, ISSN 0926-4981, nr 85, s. 48-49Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    After more than a decade of research, system securityand resilience is now the major technological barrier forthe Cognitive Radio (CR) to be adopted by the telecommunication industry. New ideas are required tomake CR networks secure and robust against attacks taking advantage the inherent characteristics of the CR functionality. This work explores key points that urgentlyneed to be addressed.

  • 194.
    Angelakis, Vangelis
    et al.
    Linköpings universitet, Institutionen för teknik och naturvetenskap. Linköpings universitet, Tekniska högskolan.
    Papadakis, Stefanos
    FORTH.
    Traganitis, Apostolos
    FORTH & UoC.
    Vasilios, Siris
    AUEB.
    Adjacent Channel Interference in 802.11a Is Harmful: Testbed Validation of a Simple Quantification Model2011Ingår i: IEEE COMMUNICATIONS MAGAZINE, ISSN 0163-6804, Vol. 49, nr 3, s. 160-166Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Wireless LAN radio interfaces based on the IEEE 802.11a standard have lately found widespread use in many wireless applications. A key reason for this was that although the predecessor, IEEE 802.11b/ g, had a poor channelization scheme, which resulted in strangling adjacent channel interference (ACI), 802.11a was widely believed to be ACI-free due to a better channelization combined with OFDM transmission. We show that this is not the case. ACI does exist in 802.11a, and we can quantify its magnitude and predict its results. For this, we present minor modifications of a simple model originally introduced by [1] that allow us to calculate bounding values of the 802.11a ACI, which can be used in link budget calculations. Using a laboratory testbed, we verify the estimations of the model, performing experiments designed to isolate the affected 802.11 mechanisms. This isolation was enabled by not using the wireless medium, and emulating it over cables and attenuators. Our results show clear throughput degradation because of ACI in 802.11a, the magnitude of which depends on the interfering data rates, packet sizes, and utilization of the medium.

  • 195.
    Angulo, Julio
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för informatik och projektledning. Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Centrum för HumanIT.
    Usable privacy for digital transactions: Exploring the usability aspects of three privacy enhancing mechanisms2012Licentiatavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    The amount of personal identifiable information that people distribute over different online services has grown rapidly and considerably over the last decades. This has led to increased probabilities for identity theft, profiling and linkability attacks, which can in turn not only result in a threat to people’s personal dignity, finances, and many other aspects of their lives, but also to societies in general. Methods and tools for securing people’s online activities and protecting their privacy on the Internet, so called Privacy Enhancing Technologies (PETs), are being designed and developed. However, these technologies are often seen by ordinary users as complicated and disruptive of their primary tasks.

     

    In this licentiate thesis, I investigate the usability aspects of three main privacy and security enhancing mechanisms. These mechanisms have the goal of helping and encouraging users to protect their privacy on the Internet as they engage in some of the steps necessary to complete a digital transaction. The three mechanisms, which have been investigated within the scope of different research projects, comprise of (1) graphical visualizations of service providers’ privacy policies and user-friendly management and matching of users’ privacy preferences “on the fly”, (2) methods for helping users create appropriate mental models of the data minimization property of anonymous credentials, and (3) employing touch-screen biometrics as a method to authenticate users into mobile devices and verify their identities during a digital transaction.

     

    Results from these investigations suggest that these mechanisms can make digital transactions privacy-friendly and secure while at the same time delivering convenience and usability for ordinary users.

  • 196.
    Angulo, Julio
    et al.
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för informatik och projektledning. Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Centrum för HumanIT.
    Fischer-Hübner, Simone
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för datavetenskap.
    Pulls, Tobias
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för datavetenskap.
    Wästlund, Erik
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för psykologi.
    Towards Usable Privacy Policy Display & Management2012Ingår i: Information Management & Computer Security, ISSN 0968-5227, Vol. 20, s. 4-17Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper discusses the approach taken within the PrimeLife project for providing user-friendly privacy policy interfaces for the PrimeLife Policy Language (PPL).We present the requirements, design process and usability testing of the “Send Data?” prototype, a browser extension designed and developed to deal with the powerful features provided by PPL. Our interface introduces the novel features of “on the fly” privacy management, predefined levels of privacy settings, and simplified selectionof anonymous credentials. Results from usability tests showed that users understand and appreciate these features and perceive them as being privacy-friendly, and they are therefore suggested as a good approach towards usable privacy policy display and management. Additionally, we present our lessons learnt in the design process of privacy policy interfaces.

  • 197.
    Angulo, Julio
    et al.
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för informatik och projektledning. Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Centrum för HumanIT.
    Wästlund, Erik
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för psykologi.
    Gullberg, Peter
    Gemalto, Gothenburg.
    Kling, Daniel
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för informatik och projektledning.
    Tavemark, Daniel
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för informatik och projektledning.
    Fischer-Hübner, Simone
    Karlstads universitet, Institutionen för informationsteknologi.
    Understanding the user experience of secure mobile online transactions in realistic contexts of use2012Ingår i: Symposium on Usable Privacy and Security (SOUPS) 2012, Washington D.C.,USA: ACM Digital Library, 2012, s. 8-Konferensbidrag (Refereegranskat)
    Abstract [en]

    Possible attacks on mobile smart devices demand higher security for applications handling payments or sensitive information. The introduction of a tamper-proof area on future generations of mobile devices, called Trusted Execution Environment (TEE), is being implemented. Before devices with embedded TEEs can be deployed to the public, investigations on usability aspects of Trusted User Interfaces (TUI) are needed. This article describes the process we have followed at gathering requirements, prototyping and testing suitable designs for TUIs in combination with a touch-screen biometric system. At the end, we present relevant findings of a pilot study that we have conducted using an Experience Sampling Method (ESM) as part of our ongoing work.

  • 198.
    Anna-Lena, Rostvall,
    et al.
    Stockholm University, , Education.
    Selander, StaffanStockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Design för lärande2010Samlingsverk (redaktörskap) (Övrig (populärvetenskap, debatt, mm))
    Abstract
  • 199.
    Anneli, Edman
    et al.
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för informationsvetenskap. Data- och systemvetenskap.
    Shohreh, Hörnqvist
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för informationsvetenskap. Data- och systemvetenskap.
    Mobil teknik och mobilt lärande: ett stöd för skola och vård för effektvisering av lärandet och arbete2006Rapport (Övrig (populärvetenskap, debatt, mm))
    Abstract [en]

    Mobilitet hos människor har ökat inom många områden i och med utvecklingen och framväxten av den mobila teknologin. Ett av de områden som har blivit påverkat av denna tekniska utveckling är lärande och utbildning både inom arbetslivet och inom skolvärlden. Idag beräknas många yrkeskategorier tillbringa mer än halva sin arbetstid utanför arbetsplatsen. Antalet abonnenter som har tillgång till trådlöst Internet förväntas öka lavinartat under det närmaste decenniet. Digital information och inlärningsmaterial ryms redan nu i våra fickor och vi har möjlighet att koppla upp oss mot varandra och kommunicera oavsett plats och tidpunkt.

    Syftet med rapporten är att presentera de olika formerna av lärande, dvs. distanslärande, elektroniskt lärande och mobilt lärande. Betoningen i detta arbete är på den sistnämnda lärandeformen, mobilt lärande. En jämförelse mellan mobilt lärande och livslångt lärande genomförs och likheterna mellan dessa diskuteras. Syftet är också att diskutera användningen av mobilteknik och mobilt lärande inom utbildningsväsendet och vården i syfte att effektivisera lärandet, kommunikation, kunskapshantering och arbete. Detta för att kunna införa och uppnå en optimal form av livslångt mobilt lärande och mobilt arbete i våra skolor och inom arbetsplatser med hjälp av den nya tekniken.

  • 200.
    Anobah, Maxwell
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Saleem, Shahzad
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Popov, Oliver
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    TESTING FRAMEWORK FOR MOBILE DEVICE FORENSICS TOOLS2014Ingår i: The Journal of Digital Forensics, Security and Law, ISSN 1558-7215, E-ISSN 1558-7223, Vol. 9, nr 2, s. 221-234Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The proliferation of mobile communication and computing devices, in particular smart mobile phones, is almost paralleled with the increasing number of mobile device forensics tools in the market. Each mobile forensics tool vendor, on one hand claims to have a tool that is best in terms of performance, while on the other hand each tool vendor seems to be using different standards for testing their tools and thereby defining what support means differently. To overcome this problem, a testing framework based on a series of tests ranging from basic forensics tasks such as file system reconstruction up to more complex ones countering anti-forensic techniques is proposed. The framework, which is an extension of an existing effort done in 2010, prescribes a method to clearly circumscribe the term support into precise levels. It also gives an idea of the standard to be developed and accepted by the forensic community that will make it easier for forensics investigators to quickly select the most appropriate tool for a particular mobile device.

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