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  • 1. Crnkovic, I
    et al.
    Hnich, B
    Jonsson, Torsten
    University of Gävle, Department of Mathematics, Natural and Computer Sciences, Ämnesavdelningen för datavetenskap.
    Kiziltan, Z
    Basic Concepts in CBSE2002In: Building Reliable Component-Based Software Systems / [ed] Ivica Crnkovic, Magnus Larsson, Boston: Artech House Publishers , 2002Chapter in book (Other academic)
  • 2. Crnkovic, Ivica
    et al.
    Hnich, Brahim
    Jonsson, Torsten
    University of Gävle, Department of Mathematics, Natural and Computer Sciences, Ämnesavdelningen för datavetenskap.
    Kiziltan, Zeynep
    Specification, implementation, and deployment of components2002In: Communications of the ACM, ISSN 0001-0782, E-ISSN 1557-7317, Vol. 45, no 10, p. 35-40Article in journal (Refereed)
  • 3.
    Jonsson, Torsten
    University of Gävle, Department of Mathematics, Natural and Computer Sciences, Ämnesavdelningen för datavetenskap.
    Programmering i fokus: grundläggande programutveckling i Visual Basic .NET2006Book (Other (popular science, discussion, etc.))
  • 4.
    Jonsson, Torsten
    University of Gävle, Department of Mathematics, Natural and Computer Sciences, Ämnesavdelningen för datavetenskap.
    Programmering i fokus: grundläggande programutveckling i Visual Basic.NET2003Book (Other academic)
  • 5.
    Jonsson, Torsten
    University of Gävle, Department of Mathematics, Natural and Computer Sciences, Ämnesavdelningen för datavetenskap.
    Visual Basic i Fokus: grundläggande applikationsutveckling och programmering version 62003 (ed. 3)Book (Other academic)
  • 6.
    Jonsson, Torsten
    et al.
    University of Gävle, Department of Mathematics, Natural and Computer Sciences, Ämnesavdelningen för datavetenskap.
    Hamfelt, Andreas
    DAViLa – A Domain Adaptable Visual Language2003In: Human Centric Computing Languages and Environments, 2003Conference paper (Other academic)
    Abstract [en]

    We present a framework where different visual notations may be implemented to suit different domains. The major characteristic of DAViLa is that it provides a domain in-dependent framework to programming, using components of interest for specific domains. A domain adaptation is achieved through implementation of domain specific components, which are added to the framework. The semantics of the framework is based on Combilog, a com-positional programming method for relational programs. In Combilog, programming semantically is composition of sets of tuples

  • 7.
    Liu, Fei
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Computer and Geospatial Sciences, Computer Science.
    Jonsson, Torsten
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Computer and Geospatial Sciences, Geospatial Sciences.
    Seipel, Stefan
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Computer and Geospatial Sciences, Computer Science. Uppsala universitet.
    Evaluation of augmented reality-based building diagnostics using third person perspective2020In: ISPRS International Journal of Geo-Information, ISSN 2220-9964, Vol. 9, no 1, article id 53Article in journal (Other academic)
    Abstract [en]

    Comprehensive user evaluations of outdoor augmented reality (AR) applications in the architecture, engineering, construction and facilities management (AEC/FM) industry are rarely reported in the literature. This paper presents an AR prototype system for infrared thermographic façade inspection and its evaluation. The system employs markerless tracking based on image registration using natural features and a third person perspective (TPP) augmented view displayed on a hand-held smart device. We focus on evaluating the system in user experiments with the task of designating positions of heat spots on an actual façade as if acquired through thermographic inspection. User and system performance were both assessed with respect to target designation errors. The main findings of this study show that positioning accuracy using this system is adequate for objects of the size of one decimeter. After ruling out the system inherent errors, which mainly stem from our application-specific image registration procedure, we find that errors due to a human’s limited visual-motoric and cognitive performance, which have a more general implication for using TPP AR for target designation, are only a few centimeters.

  • 8.
    Öman, Maria
    et al.
    University of Gävle, Department of Mathematics, Natural and Computer Sciences, Ämnesavdelningen för datavetenskap.
    Jonsson, Torsten
    University of Gävle, Department of Mathematics, Natural and Computer Sciences, Ämnesavdelningen för datavetenskap.
    Om ett pedagogiskt arbete på en högskoleavdelning2004In: Kunskap och lärande i den högre utbildningen: lärarreflexioner från praktiken / [ed] Sara Dahlström och Göran Fransson, Gävle: Högskolan i Gävle , 2004, p. 39-52Chapter in book (Other (popular science, discussion, etc.))
1 - 8 of 8
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