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Auflistung nach Autor:in "Trumler, Wolfgang"

1 - 5 von 5
  • Konferenzbeitrag
    Einsatz von XML zur Kontextspeicherung in einem agentenbasierten ubiquitären System
    (XMIDX 2003, XML Technologien für Middleware – Middleware für XML-Anwendungen, 2003) Bagci, Faruk; Petzold, Jan; Trumler, Wolfgang; Ungerer, Theo
    „Ubiquitous Computing“ bezeichnet eine Zukunftsvision: Mit Mikroelektronik angereicherte Gegenstände sollen so alltäglich werden, dass die enthaltenen Rechner als solche nicht mehr wahrgenommen werden. Damit sich ein ubiquitäres System in hohem Maße auf den Menschen einstellen kann, benötigt es Information über seine Umgebung. Diese Information wird als Kontext bezeichnet und muss auch in kleinen, tragbaren Geräten darstellbar und zugreifbar sein. Diese Arbeit stellt eine Methode vor, wie Kontextinformation für ubiquitäre Systeme mit XML dargestellt und manipuliert werden kann.
  • Konferenzbeitrag
    Towards an automated detection of self-organizing behavior
    (INFORMATIK 2008. Beherrschbare Systeme - dank Informatik. Band 2, 2008) Trumler, Wolfgang; Gerdes, Mike
    In this paper we present an entropy based method to analyze complex systems. Systems are treated as black boxes, which only expose information by some specified parameters. To decide whether a system shows self-organizing behavior in terms of the specified parameters, the calculated entropy values are preprocessed using low-pass filters. The time derivative of the smoothed entropy curve is used to analyze the short-term behavior of the system. A larger filter is used for the analysis of the long-term behavior. Different evaluations show that in principle self-organizing behavior can be recognized with our approach.
  • Konferenzbeitrag
    Towards an organic middleware for the smart doorplate project
    (Informatik 2004, Informatik verbindet, Band 2, Beiträge der 34. Jahrestagung der Gesellschaft für Informatik e.V. (GI), 2004) Trumler, Wolfgang; Bagci, Faruk; Petzold, Jan; Ungerer, Theo
    We envision future office buildings that partly or fully implement a flexible office organization, i.e. office space is assigned dynamically on request. These organizational principles save office space, but require a sophisticated software system that is highly dynamic, scalable, context-aware and self-organizing by means of selfconfiguration, self-optimization and self-healing. We propose an organic middleware approach to support self-organization in ubiquitous in-door environments as exemplified by the Smart Doorplate Project.
  • Konferenzbeitrag
    Using positive and negative from immunology for detection of anomalies in a self-protecting middleware
    (INFORMATIK 2006 – Informatik für Menschen, Band 1, 2006) Pietzowski, Andreas; Satzger, Benjamin; Trumler, Wolfgang; Ungerer, Theo
    The immune system of our body matured over millions of years and has proven ist functionality. In our research we are going to transfer techniques of a biological immune system to a computer based environment. Our goal is to design a self-protecting middleware which isn't vulnerable to malicious messages. First off this paper proposes an artificial immune system with negative and positive selection and evaluates optimal parameter settings. Our tests showded that the detection rate of unknown malicious messages can reach up to 99.6%. Further on we propose techniques to minimize the memory space needed for storing the antibodies and to speedup the time needed for detecting malicious messages. We obtained a space minimization by 30% and gained a speedup of 30 with execution time optimization.
  • Konferenzbeitrag
    Workshop – Organic computing
    (Informatik 2004, Informatik verbindet, Band 2, Beiträge der 34. Jahrestagung der Gesellschaft für Informatik e.V. (GI), 2004) Müller-Schloer, Christian; Schmeck, Hartmut; Trumler, Wolfgang; Ungerer, Theo