Endre søk
Begrens søket
1234567 151 - 200 of 2650
RefereraExporteraLink til resultatlisten
Permanent link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Treff pr side
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sortering
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
Merk
Maxantalet träffar du kan exportera från sökgränssnittet är 250. Vid större uttag använd dig av utsökningar.
  • 151.
    Barkhuus, Louise
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rossitto, Chiara
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Acting with Technology: Rehearsing for Mixed-Media Live Performances2016Inngår i: CHI '16 Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems, Association for Computing Machinery (ACM), 2016, 864-875 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Digital technologies provide theater with new possibilities for combining traditional stage-based performances with interactive artifacts, for streaming remote parallel performances and for other device facilitated audience interaction. Compared to traditional theater, mixed-media performances require a different type of engagement from the actors and rehearsing is challenging, as it can be impossible to rehearse with all the functional technology and interaction. Here, we report experiences from a case study of two mixed-media performances; we studied the rehearsal practices of two actors who were performing in two different plays. We describe how the actors practiced presence during rehearsal in a play where they would be geographically remote, and we describe the challenges of rehearsing with several remote and interactive elements. Our study informs the broader aims of interactive and mixed media performances through addressing critical factors of implementing technology into rehearsal practices.

  • 152.
    Barkhuus, Louise
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rossitto, Chiara
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Ekenberg, Love
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Forsberg, Rebecca
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Sauter, Willmar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Interactive Performances as a Means of Social Participation and Democratic Dialogue2014Inngår i: International Reports on Socio-Informatics (IRSI), ISSN 1861-4280, E-ISSN 1861-4280, Vol. 11, nr 1, 11-20 s.Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this position paper we present our ongoing research in relation to cultivating democracy and civic participation through the writing and performance of interactive theater experiences1. We provide an example of a performance that facilitates audience participation through expression and sharing of opinions and emotions, by means of digital technologies. The performance leads to further discussion within the community and inspires more artistic and theatrical experiences in this context.

  • 153.
    Barkhuus, Louise
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Tashiro, Juliana
    University of California, San Diego, , .
    Social networking on the go: Students' socialization in the age of Facebook2010Inngår i: International conference on Human factors in computing systems (CHI), ACM , 2010Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Most research regarding online social networks such as Facebook, MySpace, Linked-In and Friendster has looked at these networks in terms of activity within the online network, such as profile management and friending behavior. In this paper we are instead focusing on offline socializing structures around an online social network (exemplified by Facebook) and how this can facilitate in- person social life for students. Because students lead nomadic lives, they find Facebook a particularly useful tool for initiating and managing social gatherings, and as they adopt mobile technologies that can access online social networks, their ad-hoc social life is further enabled. We conclude that online social networks are a powerful tool for encouraging peripheral friendships, important in particular to students. We emphasize that the use of online social networks must be viewed from a perspective of use that involves both mobile and stationary platforms and that it is important to relate online and offline social practices.

  • 154.
    Barkhuus, Louise
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Zoric, Goranka
    Engström, Arvid
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Ruiz-Hidalgo, Javier
    Verzijp, Nico
    New interaction modes for rich panoramic live video experiences2014Inngår i: Behavior and Information Technology, ISSN 0144-929X, E-ISSN 1362-3001, Vol. 33, nr 8, 859-869 s.Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The possibilities of panoramic video are based on the capabilities of high-resolution digital video streams and higher bandwidth's opportunities to broadcast, stream and transfer large content across platforms. With these opportunities also come challenges such as how to focus on sub-parts of the video stream and interact with the content shown on a large screen. In this paper, we present studies of two different interaction modes with a large-scale panoramic video for live experiences; we focus on interactional challenges and explore if it is (1) possible to develop new interactional methods/ways of approaching this type of high-resolution content and (2) feasible for users to interact with the content in these new ways. We developed prototypes for two different interaction modes: an individual system on a mobile device, either a tablet or a mobile phone, for interacting with the content on the same and a non-touch gesture-based system for the home or small group interaction. We present pilot studies where we explore the possibilities and challenges with these two interaction modes for panoramic content.

  • 155. Barot, Camille
    et al.
    Buro, Michael
    Cook, Michael
    Eladhari, Mirjam
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Johansson, Magnus
    Li, Boyang
    Liapis, Antonios
    McCoy, Josh
    Ontanon, Santiago
    Rowe, Jonathan
    Tomai, Emmett
    Verhagen, Harko
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Zook, Alexander
    The AIIDE 2015 Workshop Program2016Inngår i: The AI Magazine, ISSN 0738-4602, Vol. 37, nr 2, 91-94 s.Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The workshop program at the 11th Annual AAAI Conference on Artificial Intelligence and Interactive Digital Entertainment was held November 14-15, 2015, at the University of California, Santa Cruz, USA. The program included four workshops (one of which was a joint workshop): Artificial Intelligence in Adversarial Real-Time Games, Experimental AI in Games, Intelligent Narrative Technologies and Social Believability in Games, and Player Modeling. This article contains the reports of three of the four workshops.

  • 156.
    Basile, Walter
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för biokemi och biofysik. Stockholms universitet, Science for Life Laboratory (SciLifeLab).
    Sachenkova, Oxana
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för biokemi och biofysik. Stockholms universitet, Science for Life Laboratory (SciLifeLab).
    Light, Sara
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för biokemi och biofysik. Stockholms universitet, Science for Life Laboratory (SciLifeLab). Linköping University, Sweden.
    Elofsson, Arne
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för biokemi och biofysik. Stockholms universitet, Science for Life Laboratory (SciLifeLab). Kungliga Tekniska Högskolan, Sweden.
    High GC content causes orphan proteins to be intrinsically disordered2017Inngår i: PloS Computational Biology, ISSN 1553-734X, E-ISSN 1553-7358, Vol. 13, nr 3, e1005375Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    De novo creation of protein coding genes involves the formation of short ORFs from noncoding regions; some of these ORFs might then become fixed in the population These orphan proteins need to, at the bare minimum, not cause serious harm to the organism, meaning that they should for instance not aggregate. Therefore, although the creation of short ORFs could be truly random, the fixation should be subjected to some selective pressure. The selective forces acting on orphan proteins have been elusive, and contradictory results have been reported. In Drosophila young proteins are more disordered than ancient ones, while the opposite trend is present in yeast. To the best of our knowledge no valid explanation for this difference has been proposed. To solve this riddle we studied structural properties and age of proteins in 187 eukaryotic organisms. We find that, with the exception of length, there are only small differences in the properties between proteins of different ages. However, when we take the GC content into account we noted that it could explain the opposite trends observed for orphans in yeast (low GC) and Drosophila (high GC). GC content is correlated with codons coding for disorder promoting amino acids. This leads us to propose that intrinsic disorder is not a strong determining factor for fixation of orphan proteins. Instead these proteins largely resemble random proteins given a particular GC level. During evolution the properties of a protein change faster than the GC level causing the relationship between disorder and GC to gradually weaken.

  • 157.
    Bathallath, Sameer
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Smedberg, Åsa
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kjellin, Harald
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Impediments to Effective Management of Project Interdependencies: A Study of IT/IS Project Portfolios2017Inngår i: Journal of Electronic Commerce in Organizations, ISSN 1539-2937, E-ISSN 1539-2929, Vol. 15, nr 2, 16-30 s.Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Interdependencies between projects have come to play a more active role in the decision on IT/IS portfolios and their constituent projects. However, managing these interdependencies can be a complex task, especially when the number and degree of interdependencies among projects are high. In times of uncertainty, unexpected challenges can seriously disrupt projects and, consequently, their interdependencies. This may threaten the project portfolio from achieving its final goal. The study aims to investigate the difficulties associated with managing project interdependence along the development cycle of the project portfolio. The study was conducted using a qualitative approach and semi-structured interviews with managers from four leading organizations in Saudi Arabia. The findings reveal three main categories of factors that increased the difficulty of managing project interdependencies in large IT/IS project portfolios: insufficient understanding of human responsibilities in the whole portfolio, unpredictability of the environment, and technology barriers and constraints.

  • 158.
    Bathallath, Sameer
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Smedberg, Åsa
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kjellin, Harald
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    INVESTIGATING THE SOURCES OF DIFFICULTIES IN MANAGING PROJECT INTERDEPENDENCIES: A STUDY OF IT/IS PROJECT PORTFOLIOS2016Inngår i: PROCEEDINGS OF THE 9th IADIS INTERNATIONAL CONFERENCE INFORMATION SYSTEMS 2016 / [ed] Miguel Baptista Nunes, Pedro Isaías, Philip Powell, IADIS Press, 2016, 71-82 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Interdependencies between projects can take a major role in IT/IS project portfolios. However, managing these interdependencies can be a difficult task, especially when the number and diversity of projects grow large in scale. In times of unexpected events, extra management efforts are inevitable for treating the subsequent effects on the projects and their interdependencies, and for maintaining high-performance portfolios. Complexity is also a concern for managers, and a growing complexity level may threatens the project portfolio from achieving its final goal. This paper investigates the managerial issues and difficulties in handling project interdependencies. For a closer look at these interdependencies and to gain more understanding of the problem area, a qualitative study was conducted based on semi-structured interviews with managers from four leading organizations in different industries in Saudi Arabia. The findings reveal three main sources of difficulty in managing project interdependencies in IT/IS project portfolios: 1) Insufficient understanding of human responsibilities in the whole portfolio, 2) Environmental change and 3) Technological constraints.

  • 159.
    Bathallath, Sameer
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Smedberg, Åsa
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kjellin, Harald
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Managing project interdependencies in IT/IS project portfolios: a review of managerial issues2016Inngår i: International journal of information systems and project management, ISSN 2182-7796, E-ISSN 2182-7788, Vol. 4, nr 1, 67-82 s.Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Adequately managing project interdependencies among diverse and simultaneous projects is deemed critical for successful implementation of project portfolios. The challenge is significant because it may entail managing a complex network of project interdependencies that keeps changing over time. The present study investigates the managerial challenges that may undermine effective management of project interdependencies in IT/IS project portfolios. The investigation is based on evidence from reviewing relevant literature and documented studies associated with managing project interdependencies. The main contribution of this study is to discuss three managerial challenges of project interdependencies in project portfolios. We discuss the challenges from three perspectives: types of interdependencies; patterns of interaction in interdependencies; and cost/benefit impact of project interdependencies.

  • 160.
    Bathallath, Sameer
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Smedberg, Åsa
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kjellin, Harald
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Project interdependency management in IT/IS project portfolios: from a systems perspective2016Inngår i: Procedia Computer Science, ISSN 1877-0509, E-ISSN 1877-0509, Vol. 100, 928-934 s.Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Capitalizing on inter-project interdependencies is widely accepted as being crucial for Information Technology/Information Systems (IT/IS) project portfolio success. However, handling these interdependencies becomes a source of increased management complexity as project portfolios get larger, increasingly diverse, and are much influenced by their environments. This then can lead to less predictable situations regarding the portfolio performance as a whole. Though there are many methods available for optimally selecting projects and cross-checking possible synergies and interdependencies among the projects in the portfolio, it remains unclear how one can gain control over the complexity of managing these interdependencies. In this study, we address the problem of handling many project interdependencies that continuously change and develop within a large IT/IS project portfolio. We found that the existing methods for selecting and managing the projects within a portfolio do not focus enough on how interdependencies can disrupt the balance of the whole project portfolio system. To tackle the problem, we propose a systemic approach using the Viable System Model to enhance the way that these interdependencies can be effectively managed in view of the overall portfolio system. We suggest that the Viable System Model, as a supplement to traditional IT/IS project portfolio management approaches, is recursively applied to diagnose and manage the complexity of project interdependencies within IT/IS project portfolios.

  • 161.
    Bell, Linda
    et al.
    TeliaSonera (R and D).
    Boye, Johan
    TeliaSonera (R and D).
    Gustafson, Joakim
    TeliaSonera (R&D).
    Heldner, Mattias
    TeliaSonera (R&D).
    Lindström, Anders
    TeliaSonera (R and D).
    Wirén, Mats
    TeliaSonera (R&D).
    The Swedish NICE Corpus – Spoken dialogues between children and embodied characters in a computer game scenario2005Inngår i: Proceedings Interspeech 2005 - Eurospeech: 9th European Conference on Speech Communication and Technology, Lisbon, Portugal: ISCA , 2005, 2765-2768 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This article describes the collection and analysis of a Swedish database of spontaneous and unconstrained children-machine dialogues. The Swedish NICE corpus consists of spoken dialogues between children aged 8 to 15 and embodied fairytale characters in a computer game scenario. Compared to previously collected corpora of children's computer-directed speech, the Swedish NICE corpus contains extended interactions, including three-party conversation, in which the young users used spoken dialogue as the primary means of progression in the game.

  • 162.
    Bell, Linda
    et al.
    TeliaSonera (R & D).
    Boye, Johan
    TeliaSonera (R & D).
    Gustafson, Joakim
    TeliaSonera (R & D).
    Wirén, Mats
    TeliaSonera (R & D).
    Modality Convergence in a Multimodal Dialogue System2000Inngår i: Proceedings of Götalog, 2000, 29-34 s.Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    When designing multimodal dialogue systems allowing speech as well as graphical operations, it is important to understand not only how people make use of the different modalities in their utterances, but also how the system might influence a user's choice of modality by its own behavior. This paper describes an experiment in which subjects interacted with two versions of a simulated multimodal dialogue system. One version used predominantly graphical means when referring to specific objects; the other used predominantly verbal referential expressions. The purpose of the study was to find out what effect, if any, the system's referential strategy had on the user's behavior. The results provided limited support for the hypothesis that the system can influence users to adopt another modality for the purpose of referring

  • 163. Benyon, David
    et al.
    Gambäck, Björn
    Hansen, Preben
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Mival, Oli
    Webb, Nick
    How Was Your Day?: Evaluating a Conversational Companion2013Inngår i: IEEE Transactions on Affective Computing, ISSN 1949-3045, Vol. 4, nr 3, 299-311 s.Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The How Was Your Day(HWYD) companion is an embodied conversational agent that can discuss work-related issues, entering free-form dialogues while discussing issues surrounding a typical work day. The open-ended nature of these interactions requires new models of evaluation. Here, we describe a paradigm and methodology for evaluating the main aspects of such functionality in conjunction with overall system behavior, with respect to three parameters: functional ability (i.e., does it do the rightthing conversationally), content (i.e., does it respond appropriately to the semantic context), and emotional behavior (i.e., given the emotional input from the user, does it respond in an emotionally appropriate way). We demonstrate the functionality of our evaluation paradigm as a method for both grading current system performance, and targeting areas for particular performance review. We show correlation between, for example, automatic speech recognition performance and overall system performance (as is expected in systems of this type), but beyond this, we show where individual utterances or responses, indicated as positive or negative, characterize system performance, and demonstrate how our combination evaluation approach highlights issues (both positive and negative) in the companion system's interaction behavior.

  • 164. Benyon, David
    et al.
    Höök, Kristina
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Nigay, Laurence
    Spaces of Interaction2010Inngår i: Proceedings of ACM/BCS Visions of Computer Science, International Academic Research Conference, Edinburgh, ACM/BCS , 2010Konferansepaper (Fagfellevurdert)
  • 165.
    Bergholtz, Maria
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Andersson, Birger
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Johannesson, Paul
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Abstraction, Restriction, and Co-creation: Three Perspectives on Services2010Inngår i: Advances in Conceptual Modeling – Applications and Challenges, Berlin: Springer Verlag , 2010, 107-116 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The recent surge in the interest of services has brought a plethora of applications of the service concept. There are business services and software services, software-as-a-service, platform-as-a-service, and infrastructure-as-a-service. There is also a multitude of definitions of the service concept. In this paper, we propose not a new definition of service but a conceptual model of the service concept that views services as perspectives on the use and offering of resources. The perspectives addressed by the model are: service as a means for abstraction; service as means for providing restricted access to resources; and service as a means for co-creation of value.

  • 166.
    Bergholtz, Maria
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Andersson, Birger
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Johannesson, Paul
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Towards a Model of Services Based on Cocreation, Abstraction and Rights Distribution2015Inngår i: Correct Software in Web Applications and Web Services / [ed] Bernhard Thalheim, Klaus-Dieter Schewe, Andreas Prinz, Bruno Buchberger, Cham: Springer, 2015, 29-44 s.Kapittel i bok, del av antologi (Annet vitenskapelig)
    Abstract [en]

    The term service is today defined and used in a multitude of ways, which are often ambiguous and contradictory. The absence of a commonly agreed-upon definition of the term makes it difficult to distinguish, describe and classify services. In order to address these issues, this chapter proposes a model of services that helps in analysing the concept. The model encompasses three perspectives: service as a means for cocreation of value, service as a means for abstraction and service as a means for distributing rights. The model does not suggest a definition of the term service but shows how the service concept can be analysed using a number of related concepts, like service resource, service process and service offering. The model has its theoretical foundation in the Resource-Event-Agent (REA) ontology and Hohfeld’s classification of rights.

  • 167.
    Bergholtz, Maria
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Ekenberg, Love
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Hansson, Karin
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Johannesson, Paul
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Snygg, Joakim
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Framework for evaluating tools used in edemocracy: transparency, autonomy, consensus and pluralism2014Inngår i: DSV Writers Hut 2014: proceedings  August 21-22, 2014, Åkersberga, Sweden, Stockholm: Stockholm University, 2014Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    The concept of e-democracy has been around for a while. However, the intercontextual understanding of this is still immature which complicates interdisciplinarity and communication with a diversity of stakeholders, resulting in a weak participation and implementation of e-services. This is even more emphasized in an international setting, not the least in the context of various European Union initiatives regarding e-service provision. To increase the participation in the context, e-democracy services can be utilized for strengthening individual capabilities as well as political processes. The effective design of such processes requires tools to support decision-making, collaboration, and collaborative decision-making, voting engagement and involvement in the democratic process. This article presents an evaluation framework suitable for tools for e-democracy aiming at forming a constructive base for implementing an efficient support for enabling an increased participation in vital democratic processes.

  • 168.
    Bergholtz, Maria
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Eriksson, Owen
    Johannesson, Paul
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Towards a Sociomaterial Ontology2013Inngår i: Advanced Information Systems Engineering Workshops: CAiSE 2013 International Workshops. Proceedings / [ed] Xavier Franch, Pnina Soffer, Springer Berlin/Heidelberg, 2013, 341-348 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The management of social phenomena in conceptual modelling requires a novel understanding of the notion of representation. In particular, the principles for the existence and identification of objects need to be reconsidered. To do this, the paper draws on the current ontological discourse in information systems engineering and proposes a sociomaterial ontology for supporting conceptual modeling. The ontology shows how organisational entities are grounded in physical ones and how they can be understood in terms of deontic notions like privileges, duties and powers. The sociomaterial ontology is able to assist designers in creating understandable and robust conceptual models.

  • 169.
    Bergholtz, Maria
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Johannesson, Paul
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Andersson, Birger
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Towards a model of services based on co-creation, abstraction and restriction2011Inngår i: International Conference on Conceptual Modeling (ER) 2011, Brussels: Springer , 2011Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The term service is today defined and used in a multitude of ways, and there is no usage characteristic that is common for all of these ways. As a consequence natural language terms used for describing services are ambiguous and often confusing. The lack of a common agreed upon definition of the term makes it difficult to understand and classify services as well as distinguish them from non-service concepts. In this paper, we do not propose a new definition of service but a model of services that helps in analysing the concept. The model is based on three perspectives: service as a means for co-creation of value, service as a means for abstraction, and service as a means for providing restricted access to resources.

  • 170. Berndorfer, Stefan
    et al.
    Henriksson, Aron
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Automated Diagnosis Coding with Combined Text Representations2017Inngår i: Studies in Health Technology and Informatics, ISSN 0926-9630, E-ISSN 1879-8365, Vol. 235, 201-2015 s.Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Automated diagnosis coding can be provided efficiently by learning predictive models from historical data; however, discriminating between thousands of codes while allowing a variable number of codes to be assigned is extremely difficult. Here, we explore various text representations and classification models for assigning ICD-9 codes to discharge summaries in MIMIC-III. It is shown that the relative effectiveness of the investigated representations depends on the frequency of the diagnosis code under consideration and that the best performance is obtained by combining models built using different representations.

  • 171.
    Bernsel, Andreas
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för biokemi och biofysik.
    Sequence-based predictions of membrane-protein topology, homology and insertion2008Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Membrane proteins comprise around 20-30% of a typical proteome and play crucial roles in a wide variety of biochemical pathways. Apart from their general biological significance, membrane proteins are of particular interest to the pharmaceutical industry, being targets for more than half of all available drugs. This thesis focuses on prediction methods for membrane proteins that ultimately rely on their amino acid sequence only.

    By identifying soluble protein domains in membrane protein sequences, we were able to constrain and improve prediction of membrane protein topology, i.e. what parts of the sequence span the membrane and what parts are located on the cytoplasmic and extra-cytoplasmic sides. Using predicted topology as input to a profile-profile based alignment protocol, we managed to increase sensitivity to detect distant membrane protein homologs.

    Finally, experimental measurements of the level of membrane integration of systematically designed transmembrane helices in vitro were used to derive a scale of position-specific contributions to helix insertion efficiency for all 20 naturally occurring amino acids. Notably, position within the helix was found to be an important factor for the contribution to helix insertion efficiency for polar and charged amino acids, reflecting the highly anisotropic environment of the membrane. Using the scale to predict natural transmembrane helices in protein sequences revealed that, whereas helices in single-spanning proteins are typically hydrophobic enough to insert by themselves, a large part of the helices in multi-spanning proteins seem to require stabilizing helix-helix interactions for proper membrane integration. Implementing the scale to predict full transmembrane topologies yielded results comparable to the best statistics-based topology prediction methods.

  • 172.
    Berthet, Pierre
    Stockholms universitet, Naturvetenskapliga fakulteten, Numerisk analys och datalogi (NADA).
    Computational Modeling of the Basal Ganglia: Functional Pathways and Reinforcement Learning2015Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    We perceive the environment via sensor arrays and interact with it through motor outputs. The work of this thesis concerns how the brain selects actions given the information about the perceived state of the world and how it learns and adapts these selections to changes in this environment. Reinforcement learning theories suggest that an action will be more or less likely to be selected if the outcome has been better or worse than expected. A group of subcortical structures, the basal ganglia (BG), is critically involved in both the selection and the reward prediction.

    We developed and investigated a computational model of the BG. We implemented a Bayesian-Hebbian learning rule, which computes the weights between two units based on the probability of their activations. We were able test how various configurations of the represented pathways impacted the performance in several reinforcement learning and conditioning tasks. Then, following the development of a more biologically plausible version with spiking neurons, we simulated lesions in the different pathways and assessed how they affected learning and selection.

    We observed that the evolution of the weights and the performance of the models resembled qualitatively experimental data. The absence of an unique best way to configure the model over all the learning paradigms tested indicates that an agent could dynamically configure its action selection mode, mainly by including or not the reward prediction values in the selection process. We present hypotheses on possible biological substrates for the reward prediction pathway. We base these on the functional requirements for successful learning and on an analysis of the experimental data. We further simulate a loss of dopaminergic neurons similar to that reported in Parkinson’s disease. We suggest that the associated motor symptoms are mostly causedby an impairment of the pathway promoting actions, while the pathway suppressing them seems to remain functional.

  • 173.
    Berthet, Pierre
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Numerisk analys och datalogi (NADA). Royal Institute of Technology, Sweden.
    Hellgren-Kotaleski, Jeanette
    Lansner, Anders
    Stockholms universitet, Naturvetenskapliga fakulteten, Numerisk analys och datalogi (NADA). Royal Institute of Technology, Sweden.
    Action selection performance of a reconfigurable basal ganglia inspired model with Hebbian-Bayesian Go- NoGo connectivity2012Inngår i: Frontiers in Behavioral Neuroscience, ISSN 1662-5153, E-ISSN 1662-5153, Vol. 6, 65Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Several studies have shown a strong involvement of the basal ganglia (BG) in action selection and dopamine dependent learning. The dopaminergic signal to striatum, the input stage of the BG, has been commonly described as coding a reward prediction error (RPE), i.e., the difference between the predicted and actual reward. The RPE has been hypothesized to be critical in the modulation of the synaptic plasticity in cortico-striatal synapses in the direct and indirect pathway. We developed an abstract computational model of the BG, with a dual pathway structure functionally corresponding to the direct and indirect pathways, and compared its behavior to biological data as well as other reinforcement learning models. The computations in our model are inspired by Bayesian inference, and the synaptic plasticity changes depend on a three factor Hebbian-Bayesian learning rule based on co-activation of pre- and post-synaptic units and on the value of the RPE. The model builds on a modified Actor-Critic architecture and implements the direct (Go) and the indirect(NoGo) pathway, as well as the reward prediction (RP) system, acting in a complementary fashion. We investigated the performance of the model system when different configurations of the Go, NoGo, and RP system were utilized, e.g., using only the Go, NoGo, or RP system, or combinations of those. Learning performance was investigated in several types of learning paradigms, such as learning-relearning, successive learning, stochastic learning, reversal learning and a two-choice task. The RPE and the activity of the model during learning were similar to monkey electrophysiological and behavioral data. Our results, however, show that there is not a unique best way to configure this BG model to handle well all the learning paradigms tested. We thus suggest that an agent might dynamically configure its action selection mode, possibly depending on task characteristics and also on how much time is available.

  • 174.
    Berthet, Pierre
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Numerisk analys och datalogi (NADA). Royal Institute of Technology, Sweden.
    Lansner, Anders
    Stockholms universitet, Naturvetenskapliga fakulteten, Numerisk analys och datalogi (NADA). Royal Institute of Technology, Sweden.
    Optogenetic Stimulation in a Computational Model of the Basal Ganglia Biases Action Selection and Reward Prediction Error2014Inngår i: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 9, nr 3, e90578Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Optogenetic stimulation of specific types of medium spiny neurons (MSNs) in the striatum has been shown to bias the selection of mice in a two choices task. This shift is dependent on the localisation and on the intensity of the stimulation but also on the recent reward history. We have implemented a way to simulate this increased activity produced by the optical flash in our computational model of the basal ganglia (BG). This abstract model features the direct and indirect pathways commonly described in biology, and a reward prediction pathway (RP). The framework is similar to Actor-Critic methods and to the ventral/ dorsal distinction in the striatum. We thus investigated the impact on the selection caused by an added stimulation in each of the three pathways. We were able to reproduce in our model the bias in action selection observed in mice. Our results also showed that biasing the reward prediction is sufficient to create a modification in the action selection. However, we had to increase the percentage of trials with stimulation relative to that in experiments in order to impact the selection. We found that increasing only the reward prediction had a different effect if the stimulation in RP was action dependent (only for a specific action) or not. We further looked at the evolution of the change in the weights depending on the stage of learning within a block. A bias in RP impacts the plasticity differently depending on that stage but also on the outcome. It remains to experimentally test how the dopaminergic neurons are affected by specific stimulations of neurons in the striatum and to relate data to predictions of our model.

  • 175.
    Berthet, Pierre
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Numerisk analys och datalogi (NADA).
    Lindahl, Mikael
    Tully, Philip
    Hellgren-Kotaleski, Jeanette
    Lansner, Anders
    Stockholms universitet, Naturvetenskapliga fakulteten, Numerisk analys och datalogi (NADA).
    Functional relevance of different basal ganglia pathways investigated in a spiking model with reward dependent plasticityManuskript (preprint) (Annet vitenskapelig)
  • 176. Berzisa, Solvita
    et al.
    Bravos, George
    Cardona Gonzalez, Tania
    Czubayko, Ulrich
    Espana, Sergio
    Grabis, Janis
    Henkel, Martin
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Jokste, Lauma
    Kampars, Janis
    Koc, Hasan
    Kuhr, Jan-Christian
    Llorca, Carlos
    Loucopoulos, Pericles
    Juanes Pascual, Raul
    Pastor, Oscar
    Sandkuhl, Kurt
    Simic, Hrvoje
    Stirna, Janis
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Girome Valverde, Francisco
    Zdravkovic, Jelena
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Capability Driven Development: An Approach to Designing Digital Enterprises2015Inngår i: Business & Information Systems Engineering, ISSN 1867-0202, Vol. 57, nr 1, 15-25 s.Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The need for organizations to operate in changing environments is addressed by proposing an approach that integrates organizational development with information system (IS) development taking into account changes in the application context of the solution. This is referred to as Capability Driven Development (CDD). A meta-model representing business and IS designs consisting of goals, key performance indicators, capabilities, context and capability delivery patterns, is being proposed. The use of themeta-model is validated in three industrial case studies as part of an ongoing collaboration project, whereas one case is presented in the paper. Issues related to the use of the CDD approach, namely, CDD methodology and tool support are also discussed.

  • 177.
    Beskow, Jonas
    et al.
    KTH Speech, Music and Hearing.
    Carlson, Rolf
    KTH Speech, Music and Hearing.
    Edlund, Jens
    KTH Speech, Music and Hearing.
    Granström, Björn
    KTH Speech, Music and Hearing.
    Heldner, Mattias
    KTH Speech, Music and Hearing.
    Hjalmarsson, Anna
    KTH Speech, Music and Hearing.
    Skantze, Gabriel
    KTH Speech, Music and Hearing.
    Multimodal Interaction Control2009Inngår i: Computers in the Human Interaction Loop / [ed] Waibel, Alex and Stiefelhagen, Rainer, Berlin/Heidelberg: Springer Berlin/Heidelberg, 2009, 143-158 s.Kapittel i bok, del av antologi (Fagfellevurdert)
  • 178.
    Beskow, Jonas
    et al.
    KTH Speech, Music and Hearing.
    Edlund, Jens
    KTH Speech, Music and Hearing.
    Gustafson, Joakim
    KTH Speech, Music and Hearing.
    Heldner, Mattias
    KTH Speech, Music and Hearing.
    Hjalmarsson, Anna
    KTH Speech, Music and Hearing.
    House, David
    KTH Speech, Music and Hearing.
    Research focus: Interactional aspects of spoken face-to-face communication2010Inngår i: Proceedings from Fonetik 2010, Lund: Lund University , 2010, 7-10 s.Konferansepaper (Annet vitenskapelig)
  • 179.
    Bider, Ilia
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    AGILE RESEARCH IN INFORMATION SYSTEMS FIELD: ANALYSIS FROM KNOWLEDGE TRANSFORMATION PERSPECTIVE2015Inngår i: IS 2015, IADIS Press , 2015Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Due to the relative success of agile methods in software development, the idea of having agile processes started to be tested in other areas, for example, agile business process development. This trend already reached the research community and there have appeared some materials that suggest using agility in research projects. Analysis of these suggestions, however, shows that they do not go beyond finding superficial analogy between the concepts of the software development and research projects. The paper presents a deeper analysis of the concept of agile research in Information Systems (IS) based on the analysis of the research projects from the knowledge transformation perspective. As a basis for analysis, the SECI model of Nonaka is used. Based on this analysis, several suggestions are made on how to conduct agile research in IS, e.g. prioritize relevance over vigor, test early for a practical purpose, use own experience and reflections, etc. It is also shown that some research types, like action research and design science, are more suitable for conducting agile research than others. The paper also gives analysis of risks of non-agile research, and presents an example where they are revealed.

  • 180.
    Bider, Ilia
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Analysis of Agile Software Development from the Knowledge Transformation Perspective2014Inngår i: Perspectives in business informatics research: 13th International Conference, BIR 2014, Lund, Sweden, September 22-24, 2014. Proceedings / [ed] Björn Johansson, Berlin: Springer, 2014, 143-157 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    While the Agile Software Development (ASD) has been successfully promoted in the last 15 years, there is no agreement on how to determine whether a particular project is agile or not. Some practitioners consider agility as strict usage of a specific methodology, e.g. SCRUM, others consider agility as adhering to Agile Manifesto. The lack of common view on ASD prevents creating common guidelines on when the usage of ASD is appropriate. This paper presents a model of ASD that helps to differentiate it from the traditional, phase-based development, and more strictly defines the area of its applicability. The model has been built based on the knowledge transformation perspective, as the author considers it to be the most differentiating perspective when comparing ASD to traditional software development. For building the model, the ideas from SECI model of Nonaka have been exploited. The results, in the form of requirements to be fulfilled for successful employment of ASD, are demonstrated through analysis of completed ASD projects.

  • 181.
    Bider, Ilia
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Analyzing communication capabilities of CM/ACM systems with the help of Language/Action perspective2015Inngår i: Thriving on Adaptability: best practices for knowledge workers, Lighthouse Point: Future Strategies Inc. , 2015Kapittel i bok, del av antologi (Annet vitenskapelig)
  • 182.
    Bider, Ilia
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Can the systems perspective help in attaining success in software engineering projects? Inquiry into the area of applicability for agile software development2015Inngår i: Software Engineering in the Systems Context: addressing frontiers, practice and education. / [ed] Ivar Jacobson, Harold "Bud" Lawson, London: College Publications, 2015, nr 1Kapittel i bok, del av antologi (Annet vitenskapelig)
    Abstract [en]

    The paper is devoted to finding out whether employing the systems perspective can help in converting the tacit knowledge of expert software engineers into an explicit form to be transferred to novices and non-technical stakeholders of the software projects. It suggests a simple framework, dubbed SPC, that is based on distinguishing three interconnected systems involved in a software development projects: the software itself (S), the software project (P), and the context in which the software is or to be deployed (C). The usefulness of the framework is demonstrated on using SPC for determining the area of applicability of the agile software development. This is accomplished by building models of traditional and agile software development projects and analyzing the properties of these models. The models are built based on the knowledge transformation perspective, as the author considers it to be the most differentiating perspective between the agile and traditional software development. For building the models, the ideas from SECI model of Nonaka have been used. In addition, the paper presents some ideas on how the SPC framework can be used for analyzing other issues related to software development.

  • 183.
    Bider, Ilia
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Functional Decomposition of a Socio-Technical System: What is Missing?2015Inngår i: STPIS 2015, CEUR Workshop Proceedings , 2015Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The paper discusses the needs of new expressive means for modeling a socio-technical system as consisting of functional components that are connected to each-other through the output-input relationships. The discussion is based on an example of depicting so-called feedback connections between the functional components of a system. The need to introduce a feedback connection arises when two connected components are heavily dependent on the intellectual activity of people who man the components. In such a situation, there is a risk that the output from one component could be misinterpreted by the component which takes it as an input. Using a simplified example of a software development project, the paper introduces the notion of a feedback connection and discusses the ways it could be realized in a socio-technical system.

  • 184.
    Bider, Ilia
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    In Search for a Good Theory: Commuting between Research and Practice in Business Process Domain2011Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Kurt Lewin’s statement “There is nothing more practical than a good theory” says not so much about what is good for practice, but rather what it means to have a good theory. There exist a number of competing theories in the business process domain. The current paper is devoted to one of those that lie outside the mainstream direction. The purpose of the paper is not to present the theory as such, but to present the stages of how it was developed with the aim of becoming a “good” theory from the practical point of view. The paper is written as an experience report and goes through different stages of the development where research efforts where intermixed with practical tests. The theory in question is the state-oriented view on business processes. The basic idea of this theory lies in application of the general principles of the theory of dynamic systems to the business domain. The main direction for practical application of theoretical results is the development of IT-support for loosely structured business processes. Besides giving the history of the related research and practical efforts, the paper discusses the lessons learned that can be of interest for the development of other theoretical models/views in the business process domain.

  • 185.
    Bider, Ilia
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Is People-Structure-Tasks-Technology Matrix Outdated?2017Inngår i: Proceedings of STPIS 2017: Socio-Technical Perspective in IS development / [ed] Stewart Kowalski, Peter Bednar, Ilia Bider, CEUR-WS.org , 2017, 90-97 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The paper investigates whether the classical socio-technical matrix that differentiate 4 quadrants of social-technical system: people, structure, tasks and technology can still be useful for practical purposes. The paper gives a positive answer on the question, provided that the level of abstraction in defining these four quadrants is increased to deal with culture, type of structure, methods (techniques) and type of technology, as well as the idea of joint optimization is substituted with the idea of alignment. The paper presents some examples where the concept of the augment matrix has been used.

  • 186.
    Bider, Ilia
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Towards a Non-workflow Theory of Business Processes2013Inngår i: Business Process Management Workshops: BPM 2012 International Workshops, Revised Papers / [ed] Marcello La Rosa, Pnina Soffer, Springer Berlin/Heidelberg, 2013, 1-2 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The keynote overviews the efforts of a group of researchers and practitioners to build and test a theory of business processes (BP) that could be of use for building non-workflow based business processes support (BPS) systems. The background for these efforts lies in two scientific disciplines outside the domain of Business Process Management, namely: Systems Thinking and Mathematical System Theory.

  • 187.
    Bider, Ilia
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Towards Process Improvement for Case Management: An Outline Based on Viable System Model and an Example of Organizing Scientific Events2016Inngår i: Business Process Management Workshops: BPM 2015, 13th International Workshops, Innsbruck, Austria, August 31 – September 3, 2015, Revised Papers / [ed] Manfred Reichert, Hajo A. Reijers, Springer, 2016, 96-107 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    There are a number of methods for business process improvement that are used in practice and investigated in theory, such as Lean or Six Sigma. Most of these methods are activity based and they are aimed at optimizing the activities flow, and/or the usage of resources in the process. These methods suit well the workflow-based processes and thinking, but they are not easily adaptable to Case/Adaptive Case Management (CM/ACM) processes, the goal of improvement for which is improving the overall result from the knowledge workers cooperative work. Another distinctive feature of CM/ACM is that the process is guided not through which flow of activities to use in certain situations, but through a set of templates to use in these situations. This paper outlines a possible method of improving CM/ACM processes based on the Viable System Model (VSM). Though the usage of VSM for process improvement has been reported in the literature, it was not specifically applied to CM/ACM processes. The outline is based on the analysis of the process of organizing a series of scientific events, such as the AdaptiveCM workshop.

  • 188.
    Bider, Ilia
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Bellinger, Gene
    Perjons, Erik
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Balancing Agility with Stability: Systemic View on Business Processes2013Inngår i: Beyond Alignment: Applying Systems Thinking in Architecting Enterprises / [ed] John Gotze, Anders Jensen-Waud, College Publications, 2013, 413-438 s.Kapittel i bok, del av antologi (Annet vitenskapelig)
    Abstract [en]

    On the first glance, the concept of enterprise/business agility and business process management (BPM) seems to be in conflict. Enterprise/business agility means the an enterprise’s ability to react on changes in the surrounding business world as well as discover new opportunities constantly appearing in the market for launching new products and services. BPM is, normally, considered as a tool for achieving high efficiency through standardization, specialization, and automation. By taking a systemic view on business processes this paper shows that BPM can serve as a way of achieving agility rather than being a barrier to it. The presented systemic view on business processes is based on an enterprise model consisting of three layerstypes of components: an assets, a sensors and a business process instances layer. These components of this model can be recursively decomposed, which allows for different levels of details when modeling an enterprise. The paper shows how the Assets-Sensors-Processes three-layered model can be used for finding new ways of achieving enterprise/business agility, e.g., through cross-manning of business processes. It also discusses changes that need to be introduced in the contemporary theory and practice of BPM in order to make BPM a tool for achieving agility as well as the role that Systems Thinking should play in achieving this goal.

  • 189.
    Bider, Ilia
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Bellinger, Gene
    SystemWiki.Org, , .
    Perjons, Erik
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Modeling an Agile Enterprise: Reconciling Systems and Process Thinking2011Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Selection of an enterprise modeling paradigm depends on the practical task the modeling project is trying to achieve. For example, modeling in the frame of Enterprise Architecture paradigm is, usually, aimed at alignment of the enterprise components, such as mission, vision, business processes, services and IT systems. Modeling in the frame of Business Process Management is aimed at process improvement/optimization, and modeling in the Systems Thinking paradigm is aimed at getting a holistic view on the dynamic behavior of the enterprise. This paper suggests a new approach to enterprise modeling that combine these approaches in order to reveal and improve enterprise agility. It is based on the systemic view of business processes, and it presents an enterprise as a three-layered model consisting of assets, sensors and business process instances. Elements of this model can be recursively decomposed, which allows for different levels of details when modeling an enterprise.

  • 190.
    Bider, Ilia
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Gaaloul, KhaledKrogstie, JohnN/A, , .Nurcan, SelminN/A, , .Proper, Henderik A.Schmidt, RainerHTW-Aalen, , .Soffer, Pnina
    Enterprise, Business-Process and Information Systems Modeling: 15th International Conference, BPMDS 2014, 19th International Conference, EMMSAD 2014, Held at CAiSE 2014, Thessaloniki, Greece, June 16-17, 2014. Proceedings2014Konferanseproceedings (Annet (populærvitenskap, debatt, mm))
  • 191.
    Bider, Ilia
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Halpin, TerryKrogstie, JohnNurcan, SelminProper, ErikSchmidt, RainerSoffer, PninaWrycza, Stanislaw
    Enterprise, Business-Process and Information Systems Modeling: 13th International Conference, BPMDS 2012, 17th International Conference, EMMSAD 2012, and 5th EuroSymposium, held at CAiSE 2012, Gdańsk, Poland, June 25-26, 20122012Konferanseproceedings (Fagfellevurdert)
  • 192.
    Bider, Ilia
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Henkel, Martin
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kowalski, Stewart
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Perjons, Erik
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Reuse of Simulated Cases in Teaching Enterprise Modelling2015Inngår i: Advances in Conceptual Modeling: ER 2015 Workshops AHA, CMS, EMoV, MoBID, MORE-BI, MReBA, QMMQ, and SCME, Stockholm, Sweden, October 19-22, 2015, Proceedings / [ed] Manfred A.Jeusfeld, Kamalakar Karlapalem, Springer, 2015, 337-346 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Case-based teaching/learning is widely used in Information Systems (IS) education in general, and in teaching/learning modeling, in particular. A case presents to the students a real or imaginary business situation asking them to build a model of it, or showing how such model can be built. In situations where a business case is presented in a text form, reusing it as is, or with modification in the same or a different course does not constitute much of a problem. However, using textual description for presenting cases has drawbacks on its own, as it does not help the students to acquire the skills of dissecting analyzing and analyzing the reality when building a model. The latter can be better achieved when a case is presented in a multimedia form, e.g. recorded interviews, website of a company, etc. As the previous works of the same authors show, such case presentations gives the students better understanding of the essence of modeling, which is appreciated by the students. The dark side of the multimedia presentation is that such a case presentation requires more time to build compared to using a textual form, and it is not easy to change it. This paper is a preliminary inquiry into the problem of reusing of cases presented with the help of multimedia. It presents a conceptual model of the domain aimed at discussing the potential of reuse of the whole case or its parts, and concludes with considerations on reusability that need to be covered when building multimedia presentations of cases.

  • 193.
    Bider, Ilia
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Henkel, Martin
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kowalski, Stewart
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Perjons, Erik
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Simulating apprenticeship using multimedia in higher education: A case from the information systems field2015Inngår i: Interactive Technology and Smart Education, ISSN 1741-5659, E-ISSN 1758-8510, Vol. 12, nr 2, 137-154 s.Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose – This paper aims to report on a project aimed at using simulation for improving the quality of teaching and learning modeling skills. More specifically, the project goal was to facilitate the students to acquire skills of building models of organizational structure and behavior through analysis of internal and external documents, and interviews with employees and management. An important skill that practitioners in the information systems field need to possess is the skill of modeling information systems. The main problem with acquiring modeling skills is to learn how to extract knowledge from the unstructured reality of business life. Design/methodology/approach – To achieve the goal, a solution was introduced in the form of a computerized environment utilizing multimedia to simulate a case of an apprenticeship situation. The paper gives an overview of the problem that the solution addresses, presents the solution and reports on the trial completed in a first-year undergraduate course at Stockholm University. Findings – The results of the trial indicate that using rich multimedia along with a case-based learning approach did improve the overall performance of the students. It was also shown that both students’ and the teachers’ attitudes toward the solution were positive. Originality/value – The solution presented in this paper, using computer simulation in teaching/learning by focusing on an apprenticeship situation, can be reused by other university teachers, especially in the Information Systems discipline. This solution can thus be used in teaching, system design, requirements engineering, business analysis and other courses typical for information systems.

  • 194.
    Bider, Ilia
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Henkel, Martin
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kowalski, Stewart
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap. Gjøvik University College, Norway.
    Perjons, Erik
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Teaching Enterprise Modeling Based on Multi-media Simulation: A Pragmatic Approach2015Inngår i: E-Technologies: 6th International Conference, MCETECH 2015, Montréal, QC, Canada, May 12-15, 2015, Proceedings / [ed] Morad Benyoucef, Michael Weiss, Hafedh Mili, Springer, 2015, 239-254 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The paper addresses the problem of how university students can acquire enterprise modeling skills so that they can build high quality models of organizational structure and behavior in practical settings after their graduation. The best way of learning such skills is apprenticeship where the students follow a modeling master in a real business case. However, in a university classroom setting this is difficult to arrange, if even possible. Therefore, the paper suggests the use of a computer-based simulation as a good approximation to apprenticeship. Moreover, it suggests a pragmatic, low-cost approach making the idea accessible even for courses with a low budget. A business case is simulated by providing the students with multi-media information sources that are usually used by system or business analysts when building models. The sources consist of recorded interviews with the stakeholders, a web-site of the enterprise under investigation, internal protocols from management meetings, results of twitter search on the company name, etc. The paper presents practical guidelines on how to build such simulation based on a trial successfully completed at the Department of Computer and System Sciences at Stockholm University.

  • 195.
    Bider, Ilia
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Henkel, Martin
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Kowalski, Stewart
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Perjons, Erik
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Technology Enhanced Learning of Modeling Skills in the Field of Information Systems2015Inngår i: IADIS international conference on information systems, 2015 / [ed] Miguel Baptista Nunes, Pedro Isaías and Philip Powell, IADIS Press, 2015, 121-128 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper reports on a project aimed at using simulation for improving the quality of teaching and learning in the field of Information Systems. More specifically, the project goal was facilitating the students to acquire skills of building models of organizational structure and behavior through analysis of internal and external documents, and interviewing employees and management. The solution tested in the project was a computerized environment utilizing multi-media to simulate a business case. The paper gives an overview of the problem that the solution addresses, presents the solution, and reports on a trial completed in a first year undergraduate course at Stockholm University. The results of the trial indicate that using rich multi-media along with a case based learning approach did improve the overall performance of the students. It was also shown that both students’ and the teachers’ attitude toward the solution was positive.

  • 196.
    Bider, Ilia
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Henning, Otto
    Modeling a Global Software Development Project as a Complex Socio-Technical System to Facilitate Risk Management and Improve the Project Structure2015Inngår i: Conference on Global Software Engineering (ICGSE), 2015 IEEE 10th International conference,13-16 july, 2015: 2015 IEEE 10th International Conference on Global Software Engineering, Ciudad Real, 13-16 july, 2015, IEEE Computer Society, 2015, 1-12 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Any global software development project needs to deal with distances -- geographical, cultural, time zone, etc. -- between the groups of developers engaged in the project. To successfully manage the risks caused by such distances, there is a need to explicate and present the distances in a form suitable for manual or semi-automatic analysis, the goal of which is to detect potential risks and find ways of mitigating them. The paper presents a technique of modeling a global software development project suitable for such analysis. The project is modeled as a complex socio-technical system that consists of functional components connected with each other through output-input relationships. The components do not coincide with the organizational units of the project and can be distributed through the geographical and organizational landscape of the project. The modeling technique helps to explicate and represent various kinds of distances between the functional components to determine which of them constitute risk factors. The technique was developed during two case studies, of which the second is used for presenting and demonstrating the new modeling technique in the paper.

  • 197.
    Bider, Ilia
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap. IbisSoft AB, Stockholm, Sweden.
    Jalali, Amin
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Agile business process development: why, how and when — applying Nonaka’s theory of knowledge transformation to business process development2016Inngår i: Information Systems and E-Business Management, ISSN 1617-9846, E-ISSN 1617-9854, Vol. 14, nr 4, 693-731 s.Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The traditional way of business process development is via creating a detailed model of a business process in question, acquiring an IT-system to support it, and then implementing it in the organizational practice. Acquiring a system can be done via designing and manufacturing it by the business itself, or via commissioning it to somebody else. Alternatively, a generic system can be bought and configured according to the business process model created. The traditional approach has a number of risks that become visible only during the latest phase of introducing the system in the organizational practice, e.g., when it becomes clear that the system does not fit the business and/or people who work in it. These risks could be mitigated by using an agile approach to the development of business processes. In agile approach: (a) the phases of process modeling, IT-system design, and manufacturing are merged into one, and (b) instead of using one big cycle, a series of smaller development cycles is used. The paper discusses what is needed to implement the agile approach, and in which business situations the agile approach is the most appropriate. Examples of tools to support agile development are presented and analyzed. The results presented in the paper have been achieved based on the knowledge transformation perspective along the lines suggested by Nonaka in SECI model. The modification of this model has been used to understand the risks and requirements connected to a particular process development strategy.

  • 198.
    Bider, Ilia
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Jalali, Amin
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Limiting Variety by Standardizing and Controlling Knowledge Intensive Processes: Case Study and Reflection on Experience2016Inngår i: 2016 IEEE 20th International Enterprise Distributed Object Computing Workshop (EDOCW): Proceedings / [ed] Remco Dijkman, Luís Ferreira Pires, Stefanie Rinderle-Ma, IEEE Computer Society, 2016Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper studies the effects of applying process improvement principles to knowledge-intensive processes, which are typical for being supported by Adaptive Case Management systems. The study is being completed by investigating a process of conducting a small-scale research project that results in BS or MS thesis being defended and graded. The research is a mixture of the case study at the department with which both authors are affiliated and reflections on own experience as active participants of the process. The preliminary results show that the improvement principles applied in the project have helped to smoothen the process and improve its outcome in terms of producing defendable theses that satisfy the requirements set by the relevant authority. However, it seems they might not positively affect other outcomes, like the size and quality of research contribution.

  • 199.
    Bider, Ilia
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Jalali, Amin
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Ohlsson, Jens
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Adaptive Case Management as a Process of Construction of and Movement in a State Space2013Inngår i: On the Move to Meaningful Internet Systems: OTM 2013 Workshops: Proceedings / [ed] Yan Tang Demey, Hervé Panetto, Springer Berlin/Heidelberg, 2013, 155-165 s.Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Despite having a number of years of experience, adaptive case management (ACM) still does not have a theory that would differentiate it from other paradigms of business process management and support. The known attempts to formalize Case Management do not seem to help much in creating an approach that could be useful in practice. This paper suggests an approach to building such a theory based on generalization of what is used in practice on one hand and the state-oriented view on business processes on the other. In practice, ACM systems use a number of ready-made templates that are picked up and filled as necessary for the case. State-oriented view considers a process instance/case as a point moving in a specially constructed state space. This paper suggests considering a case template as a definition of a sub-space and piking different template on the fly as constructing the state space along with moving in it when filling the template. The result is similar to what in control-flow based theories are considered as a state space with variable numbers of dimensions. Beside suggestions to building a theory, the paper demonstrates the usage of the theory on an example.

  • 200.
    Bider, Ilia
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Jalali, Amin
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Söderström, David
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Creating Self-Managed Cross-Professional Teams with Metaphoric Business Process Support Systems2015Inngår i: International Conference on Business Process Modeling, Development, and Support (BPMDS), Springer Publishing Company , 2015Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The typical values that can be obtained by employing a business process support (BPS) system are optimization, compliance to rules and regulations, leanness, etc. These are obtained by introducing a kind of “conveyor belt” in business processes. While these values can be important for some processes at some phases of the enterprise development, they can be counter-productive for other processes and other phases. This idea paper investigates a possibility of obtaining completely different value from a BPS system, namely it serving as a means of creating self-managed/self-directed cross-professional teams of process participants. The paper suggests using visualized folk and fairy tales and interactive game technology as a basis for building BPS systems that can bring this value. The discussion is done based on the example of representing a consultative sales process using a treasure hunting plot.

1234567 151 - 200 of 2650
RefereraExporteraLink til resultatlisten
Permanent link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf