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  • 1. Andersson, M.
    et al.
    Heldal, R.
    Christiernin, Linn G.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Applying task-based division in multi-layered design: an industrial case study2005In: Human-Computer Interaction 2005: Proceeding of The IASTED International Conference on Human-Computer Interaction (IASTED-HCI)Phoenix, USA, November 14 - 16, 2005, Acta Press , 2005Conference paper (Refereed)
  • 2.
    Boklund, Andreas
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Assessing Lectures, a case Study on the Student’s Perception2006In: Shifting perspectives in engineering education, Göteborg: Chalmers Tekniska Högskola , 2006, p. 96-103Chapter in book (Other academic)
  • 3.
    Boklund, Andreas
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Performance Prediction of Future Generation Computer Systems2006In: Proceedings of the International Conference on Applied Computing: San Sebastian, Spain, Feb 25-28, 2006, p. 42-48Conference paper (Other academic)
  • 4.
    Boklund, Andreas
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Wombat lurar nätskurkarna2006In: Datormagazin, ISSN 1650-1306, no 10, p. 86-90Article in journal (Other (popular science, discussion, etc.))
  • 5.
    Boklund, Andreas
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Christiernin, Stefan
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Skriv en bandbreddsmätare i C2007In: Datormagazin, ISSN 1650-1306, no 7, p. 113-117Article in journal (Other (popular science, discussion, etc.))
  • 6.
    Boklund, Andreas
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Christiernin, Stefan
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Johansson, Christer
    Lindell, Håkan
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    A Comprative Study of Forward and Reverse Engineering in UML Tools2007In: Proceedings of the International Conference on Applied Computing: Salamanca 2007, Spain, IADIS , 2007, p. 535-540Conference paper (Refereed)
    Abstract [en]

    In the process of developing computer based applications the use of descriptive models to depict the architecture and design of the application is practical and brings many advantages. The most commonly used standard today is the Unified Modeling Language. There are many tools that implemented support for this standard for modeling, and they vary in functionality. A comparative study, including a selection of these tools, will show advantages and disadvantages for each tool. The purpose of this study is to test a selection of these modeling tools for a typical three-tier layered web service application. The tools tested in this study are Microsoft Visual Studio 2005 .NET Beta, PowerDesigner and Visual Paradigm. Rational Rose would have been included if it would have supported C#. In this study tests are performed in regard to modeling a class diagram, forward engineering to source code from the class diagram and reverse engineering from source code to class diagram. Despite the shortage of diagram types MS Visual Studio proved to be the most reliable tool for this particular type of applications.

  • 7.
    Boklund, Andreas
    et al.
    University West. University West, Department of Technology, Mathematics and Computer Science. University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Jiresjö, Christian
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Mankefors, Stefan
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    The Story Behind Midnight, a Part Time High Performance Cluster2003In: International conference on Parallel and Distributed Processing Techniques and Applications / [ed] Hamid R. Arabnia, Las Vegas: CSREA Press , 2003, p. 173-178Conference paper (Other academic)
    Abstract [en]

    In this paper, we present the creation process andthe purpose behind the Midnight cluster. It isdisguised as a computer laboratory during the day,but turns into a high performance compute clusterduring the night.The main focus of this paper is on the basic issueswith creating a part time compute cluster. TheMidnight cluster was constructed to serve both as aCPU harvester and as a platform for further studies.The main goal of our upcoming research is toev aluate different methods for handling shapechangeand process management on the cluster, andhow these factors affect running processes, stabilityand performance.

  • 8.
    Boklund, Andreas
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Namaki, Nima
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Mankefors-Christiernin, Stefan
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Jiresjö, Christian
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    A characterisation tool for the impact of network deficiencies on HPC applications2008In: Proceedings of the 2008 International Conference on Parallel and Distributed Processing Techniques and Applications, PDPTA 2008, 2008, p. 888-894Conference paper (Other academic)
  • 9. Calås, G.
    et al.
    Christiernin, Stefan
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Boklund, Andreas
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Robustness Analysis and Technology Forecasting: Survey on a Missing Combination in Software Development2006In: Proceedings of the International conference on Software Engineering :: innsbruck, Austria, 2006, p. 329-334Conference paper (Other academic)
  • 10.
    Calås, Göran
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Boklund, Andreas
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Mankefors-Christiernin, Stefan
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    A First Draft of RATF: A Method Combining Robustness Analysis and Technology Forecasting2006In: Information Technology: New Generations, 2006. ITNG 2006. Third International Conference on, 2006, p. 72-77Conference paper (Other academic)
    Abstract [en]

    This paper is based on an extensive study performed on a large software suite for over a decade. From the experiences derived from this study we created a first draft of a method combining an extended robustness analysis (RA) method with the future oriented method of technology forecasting (TF). In this method TF provides information about the systems future evolution to the RA which then generates the software design. The RA and TF methods then form a feedback loop, which results in an improved reusable and robust software design. The purpose of the RATF method is to predict the evolutional path of the software system, thus making preparations for (example) functionality that will be needed in future generations, i.e. utilizing the power-of-prediction to implement the base of tomorrow's functions today

  • 11.
    Calås, Göran
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Mankefors-Christiernin, Stefan
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Boklund, Andreas
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Combining robust analysis and technology forecasting: A missing combination in contemporary methods2006In: Proceedings of the IASTED International Conference on Software Engineering: as part of the 24th IASTED International Multi-Conference on APPLIED INFORMATICS, Innsbruck, 2006, p. 329-334Conference paper (Other academic)
    Abstract [en]

    Seven software engineering methods and one general purpose system engineering method TRIZ was evaluated concerning their abilities to combine software technology forecasting, that is prediction of potential software evolution with robustness analysis, which is a method to model a system tolerant to changes. None of the investigated software engineering method or process concepts combines software technology forecasting with robustness analysis to any great extent. Several of the methods evaluated do contribute with techniques and principles, that potentially could be combined and give systematically technology forecasting with comprehensively robustness analysis though. This defines a new frontier for research into a combined "super class" method for software development.

  • 12.
    Christiernin Gustafsson, Linn
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Gustavsson, M.
    Ohlsson, A.
    Boklund, Andreas
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Prototyping a Multi-Layered Help - a User Involved Exploratory Design2006In: Proceedings of the International Conference on Applied Computing: San Sebastian, Spain. Feb 25-28, 2006, p. 315-323Conference paper (Other academic)
  • 13. Coulter, John E.
    et al.
    Lei, Shi
    Tsinghua University, Beijing, Department of Environmental Science and Engineering.
    Jenkins, Samantha
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Environment as the stage for economic actors2007In: Chinese Journal of Population, Resources and Environment, ISSN 1004-2857, Vol. 5, no 1, p. 3-8Article in journal (Other academic)
    Abstract [en]

    The relative importance of economics and environment in debate may soon be reversed due to the influence of three factors. Firstly, in the global economy it is hard to hide the unwanted products of economic processes. Secondly, huge advances in science will reduce the imperfect knowledge of markets, making some monitoring and analyzing tools show the design of sensible and equitable livelihood in communities, which is more important than the motivation of maximising profits for some individuals or firms. Thirdly, China, as the last major player on the planet to take on economic growth, comes from traditions fundamentally different from those economies that have experienced the Industrial Revolution previously. Its challenges with sustainability and environmental conservation predate Western economics by millennia, and it is implementing policies domestically and starting to work on the world stage that acknowledges that the surroundings are the host for any economic and socio-political system.

  • 14.
    Gustavsson Christiernin, Linn
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Layered design: concepts, case studies and processes - theories and implementations2007Doctoral thesis, comprehensive summary (Other academic)
  • 15.
    Gustavsson Christiernin, Linn
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Bäckman, Rickard
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Gidmark, Mikael
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Persson, Ann
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    iLayer: MLD in an operating system interface2006In: AVI: Proceedings of the working conference on advanced visual interfaces  (AVI '06 ) Venezia, Italy   May 23 - 26, 2006, ACM , 2006, p. 87-90Conference paper (Refereed)
  • 16.
    Gustavsson Christiernin, Linn
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Erstorp, Ulf
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Magnusson, Staffan
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Ångfors, Peter
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Mankefors-Christiernin, Stefan
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Easylayer: MLD in an application portal with multiple user groups2007In: Proceedings of the Iadis International Conference Applied Computing 2007: Salamanca, Spain 18-20 February 2007, IADIS , 2007, p. 27-34Conference paper (Other academic)
    Abstract [en]

    In large organizations there are usually rather large groups of heterogeneous users with different tasks and different needs. Their requirements would most likely vary a lot when the system is designed to grant them access to different parts of the functions and applications In our earlier work we have tested the interface concept of Multi-Layered Design (MLD) on an operating system where each layer had a set of applications and tools. The users working with the system could get access to different applications depending on their level of experience or their different needs. The current paper presents how the MLD concept is taken one step further; implementing a layered design in a multi-user portal on a Citrix server. When a network solution is used, new available possibilities are given. The MLD approach can be combined with a role based access technique can the layered structure can be used in different ways for many different groups of users. In the study a MLD mushroom structure is employed where the user category decides the set of layers the different user groups can choose from while the individual user’s tasks and experience guide the choice of the specific layer. Thin clients are used to access the layer structure and five personas are made to represent the potential user groups. The results show that MLD can be used within a Citrix environment and that it is a viable alternative or complement for multi-user portals

  • 17.
    Gustavsson Christiernin, Linn
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Lindahl, Fredrik
    Chalmers University of Technology, Sweden.
    Torgersson, Olof
    Chalmers University of Technology, Sweden.
    Designing a multi-layered image viewer2004In: ACM International Conference Proceeding Series Vol 82: proceedings of the third Nordic conference on Human-computer interaction NordiCHI '04 , Tampere, Finland, ACM , 2004, p. 181-184Conference paper (Refereed)
  • 18.
    Jenkins, Samantha
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Kirk, Stephen
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Ayers, P.W.
    Real-space study of mechanical instability in ice XI on a 'bond-by-bond' basis2006In: Proceedings of the 11th International Conference on the Physics and Chemistry of Ice: July 23-28, Bremerhaven, Germany, Cambridge: RSC publishing , 2006, p. 273-281Conference paper (Other academic)
  • 19.
    Jenkins, Samantha
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Kirk, Stephen
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Ayers, P.W.
    The chemical character of very high pressure ice phases.2006In: Proceedings of the 11th International Conference on the Physics and Chemistry of Ice: July 23-28, Bremerhaven, Germany, Cambridge: RSC publishing , 2006, p. 265-273Conference paper (Other academic)
  • 20.
    Jenkins, Samantha
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Kirk, Stephen
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Ayers, P.W.
    The importance of O--O bonding interactions in various phases of ice.2006In: Proceedings of the 11th International Conference on the Physics and Chemistry of Ice: July 23-28, Bremerhaven, Germany, Cambridge: RSC publishing , 2006, p. 257-265Conference paper (Other academic)
  • 21.
    Jenkins, Samantha
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Kirk, Stephen
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Ayers, P.W.
    Topological transitions between ice phases.2006In: Proceedings of the 11th International Conference on the Physics and Chemistry of Ice: July 23-28, Bremerhaven, Germany, Cambridge: RSC publishing , 2006, p. 249-257Conference paper (Other academic)
  • 22.
    Jenkins, Samantha
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Kirk, Steven
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Software architecture graphs as complex networks: a novel partitioning scheme to measure stability and evolution2007In: Information Sciences, ISSN 0020-0255, E-ISSN 1872-6291, Vol. 177, no 12, p. 2587-2601Article in journal (Refereed)
    Abstract [en]

    The stability and evolution of the structure of consecutive versions of a series of software architecture graphs are analysed using the theory of complex networks. Brief comparisons are drawn between the scale-free behaviour and second order phase transitions. On this basis a software design metric Icc is proposed. This software metric is used to quantify the evolution of the stability vs. maintainability of the software through various releases. It is demonstrated that the classes in the software graph are acquiring more out-going calls than incoming calls as the software ages. Three examples of software applications where maintainability and continuous refactoring are an inherent part of their development process are presented, in addition to a Sun Java2 framework where growth and backward compatibility are the more important factors for the development. Further to this a projected future evolution of the software structure and maintainability is calculated. Suggestions for future applications to software engineering and the natural sciences are briefly presented.

  • 23.
    Jenkins, Samantha
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Kirk, Steven R.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    An investigation of the merging and collapsing of software2007In: Advances in Complex Systems, ISSN 0219-5259, Vol. 10, no 3, p. 379-393Article in journal (Refereed)
    Abstract [en]

    We explore the use of complex networks for understanding of the interaction of computer software applications written in the Java object-oriented language with the "library classes" that they use (those provided by the Java Runtime Environment) as, essentially, a merged network of classes. The dependence of the software on the library is quantified using a recently introduced model that identifies phases close to a second-order phase transition existing in scale-free networks. An example is given of a piece of software whose class network collapses without the presence of the library classes, providing validation of a novel structural coupling measure; Rcoupling. The structural properties of the merged software-Java class networks were found to correlate with the proportion of Java classes contained within the subset delimited by Rcoupling. A mechanism for the preservation of the software class network is also provided for the cases studied where the removal of the library classes does not cause collapse.

  • 24.
    Jiresjö, Christian
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Boklund, Andreas
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Benefits of Alternative Network Topologies For COTS Linux Clusters2006In: Proceedings of the International Conference on Applied Computing: San Sebastian, Spain. Feb 25-28, 2006, p. 457-461Conference paper (Other academic)
    Abstract [en]

    The focus of this paper is to evaluate the use of two different network topologies for Ethernet networks in small Common

    Off The Shelf (COTS) clusters. The fully meshed network topology was evaluated and its impact on latency and

    bandwidth was measured and compared to the more traditional switched network topology. This was done at MPI level

    by measuring the point-to-point round trip latency (ping-pong) and all-to-alla bandwidth for different sized messages.

    The results from the experiments are presented and the overall the benefits and drawbacks of the both approaches are

    discussed.

  • 25.
    Namaki, Nima
    et al.
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Jiresjö, Christian
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Aspects of Distributed File Systems Considering CPU Performance with Lustre2006In: Proceedings of the International Conference on Applied Computing: San Sebastian, Spain. Feb 25-28, 2006, p. 130-136Conference paper (Other academic)
  • 26. Persson, R.
    et al.
    Mankefors Christiernin, Stefan
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Boklund, Andreas
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Concept Model of an Object Detecting Mobile Robot in an Indoor Environment2006In: Proceedings of the International Conference on Applied Computing: San Sebastian, Spain. Feb 25-28, 2006, p. 130-136Conference paper (Other academic)
  • 27. Torkar, Richard
    et al.
    Mankefors-Christiernin, Stefan
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Combining partition and random testing2006In: Proceedings of the IASTED International Conference on Software Engineering, as part of the 24th IASTED International Multi-Conference on APPLIED INFORMATICS, Innsbruck, 2006, p. 367-372Conference paper (Other (popular science, discussion, etc.))
    Abstract [en]

    In this paper we evaluate the potential in combining different testing methodologies. The evaluation indicates an increase in effectiveness when adding random testing to partition testing. At the same time, the increase in efficiency inevitably fades because of the added number of random test cases being executed. Nevertheless, the potential in an automation scheme for creating and executing test cases is visible, thus indicating that a future implementation combining the best of two worlds, i.e. partition and random testing could be pursued.

1 - 27 of 27
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