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Auflistung nach Autor:in "Kowalczyk, Ryszard"

1 - 10 von 77
  • Konferenzbeitrag
  • Konferenzbeitrag
    Ant Colony System Based Algorithm for QoS-Aware Web Service Selection
    (Grid service engineering and management – the 4th international conference on grid service engineering and management – GSEM 2007, 2007) Zheng, Xiao; Luo, Jun-Zhou; Song, Ai-Bo
    QoS-aware service selection is an active area of research on Web services composition. It is a complex combinatorial optimization problem, which solves how to find a best composition plan that maximizes user QoS requirement. This paper presents a QoS-aware Web service selection algorithm based on Ant Colony System. Firstly, a proposed Web Services Composition graph (WSC graph) is applied to model the composition problem. Then an extended Ant Colony System using a novel Ant clone rule is applied to solve the selection problem. In order to quicken the speed of its convergence, the utility function is considered as the heuristic information. Finally, the algorithm is tested for the performance.
  • Konferenzbeitrag
    Application Specification Language (ASL) – A Language for Describing Applications in Grid Computing
    (Grid service engineering and management – the 4th international conference on grid service engineering and management – GSEM 2007, 2007) Afgan, Enis; Bangalore, Purushotham
    Grid computing is the computing infrastructure of the next century where unlimited hardware and software resources are delivered to user’s fingertips. Much of the power delivered by grid computing is realized through application software made readily available to its users. The process of application deployment and deliverance to the end-users though is perplexed with options and requirements not readily available to application deployers. In this paper, we present a new grid language called Application Specification Language (ASL), which allows application developers to describe their individual applications. Application descriptions include general application information, installation requirements, invocation requirements, as well as any additional hints or suggestions that are applicable for the application. We present an ASL schema and provide examples of language use showing how adoption of ASL alleviates some of the deployment and runtime difficulties.
  • Konferenzbeitrag
    Applying model-transformation techniques to ontology evolution
    (NODe 2005 – GSEM 2005, 2005) Jin, Longfei; Liu, Lei; Guo, Degui
  • Konferenzbeitrag
    An approach for semantic checks of process models
    (Business process, services – computing and intelligent service management, 2009) Feja, Sven
    This paper presents an approach for using model checking for process models and workflows. The approach allows it to graphically state semantic validation rules on the level of processes. This enables the process modeler to use model checking techniques to get higher quality models for the further software development process.
  • Konferenzbeitrag
    An approach to abstracting and transforming web services for end-user-doable construction of service-oriented appllications
    (NODe 2005 – GSEM 2005, 2005) Yu, Jian; Fan, Jun; Yanbo, Han; Wang, Jianwu; Zhang, Chen
  • Konferenzbeitrag
    Avoiding infinite recursion with stratified aspects
    (NODe 2006 – GSEM 2006, 2006) Bodden, Eric; Forster, Florian; Steimann, Friedrich
    Infinite recursion is a known problem of aspect-oriented programming with AspectJ: if no special precautions are taken, aspects advising aspects can easily and unintentionally advise themselves. We present a compiler for an extension of the AspectJ programming language that avoids self reference by associating aspects with levels, and by automatically restricting the scope of pointcuts used by an aspect to join points of lower levels. We report on a case study using our language extension, and provide numbers of the changes necessary for migrating existing applications to it. Our results suggest that we can make programming with AspectJ simpler and safer, without restricting its expressive power unduly.
  • Konferenzbeitrag
    Building next generation service-oriented architectures using argumentation agents
    (NODe 2006 – GSEM 2006, 2006) Curcin, Vasa; Ghanem, Moustafa; Guo, Yike; Stathis, Kostas; Toni, Francesca
  • Editiertes Buch
  • Konferenzbeitrag
    A case study on managing slas in composite services with COSMA
    (Business process, services – computing and intelligent service management, 2009) Ludwig, André; Hering, Thomas; Kluge, Rolf; Franczyk, Bogdan
    COSMA proposes a novel SLA management approach for composite services. It supports a composite service provider in managing SLAs with providers of atomic services, in managing SLAs with requesters of composite services, and aligning both SLA management activities with each other. On this basis, a composite service provider can control and optimize its composite SLA management activities during the entire SLA lifecycle. This includes, in particular, planning and negotiating SLAs, monitoring and evaluating SLAs. In this paper, a case study on managing SLAs in composite services with the COSMA approach is presented in detail.