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Suche nach „[D.] [Fischer]“ hat 11 Publikationen gefunden
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    DigitalElektrotechnik und Medientechnik

    Beitrag (Sammelband oder Tagungsband)

    Andreas Fischer, D. Bhamare, A. Kassler

    On the Construction of Optimal Embedding Problems for Delay-Sensitive Sercice Function Chains

    [Accepted for publication]

    Proceedings of the 28th International Conference on Computer Communications and Networks (ICCCN 2019) [July 29-August 1, 2019; Valencia, Spain]

    2019

    Angewandte Wirtschaftswissenschaften

    Vortrag

    D. Fischer, Georg Herde

    Evidenzbasierte Entscheidungen auf der Grundlage von Big Data Analytics

    Digitaler Campus Bayern (DCB) Erfahrungsaustausch, Fürth

    2018

    DigitalAngewandte Wirtschaftswissenschaften

    Zeitschriftenartikel

    Georg Herde, D. Fischer

    Performance Measurement of Audit Software Tools

    Bavarian Journal of Applied Sciences, vol. 1, no. 1, pp. 27-39

    2015

    DOI: 10.25929/ed0s-n769

    Abstract anzeigen

    Werkzeuge zur Datenanalyse sind eine bekannte Technologie. Aufgrund der zunehmenden Menge an Daten, die diese Werkzeuge bearbeiten müssen, wird es immer wichtiger zu wissen, wie effizient diese Werkzeuge Standardabfragealgorithmen ausführen. Dieser Aufsatz beschreibt die Planung, Entwicklung und Durchführung eines flexiblen Leistungsmessprojekts. Es beschreibt die verschiedenen Hardwarekomponenten und Betriebssoftware-Umgebungen für diejenigen, die mit Performance-Messung zu tun haben. Diese Entwicklung kann mit verschiedenen Anwendungen, die in der Lage sind, Batch-Operationen auszuführen, verwendet werden. Leistungstestergebnisse (zusätzliche Datei) werden vorgestellt und interpretiert. Data analysis tools are a well-known technology. Due to the increasing amount of data such tools have to handle, it is becoming more and more important to know how efficiently these tools can execute standard query algorithms. This paper describes the planning, development, and execution of a flexible performance measurement project. It provides information on the different hardware components and operating software environments to those who want to do performance measurement tests on software. This development can be used with different applications capable of batch operations. Performance test results (additional file) will be presented and interpreted.

    Elektrotechnik und Medientechnik

    Beitrag (Sammelband oder Tagungsband)

    J. Benze, Andreas Berl, K. Daniel, G. Eibl, D. Engel, Andreas Fischer, U. Hofmann, A. Kießling, S. Köpsell, L. Langer, H. Meer, C. Neureiter, M. Niedermeier, T. Pfeiffenberger, M. Pietsch, A. Veichtlbauer

    VDE-Positionspapier Energieinformationsnetze und -systeme (Smart Grid Security)

    VDE-Kongress 2014 Smart Cities (Intelligente Lösungen für das Leben in der Zukunft, Kongressbeiträge 20./21.10.2014, Frankfurt/Main, Messe), Berlin

    2014

    ISBN: 978-3-8007-3641-6

    Elektrotechnik und Medientechnik

    Zeitschriftenartikel

    Andreas Berl, M. Niedermeier, Andreas Fischer, D. Hutchinson, H. Meer

    Virtual Energy Information Network: A Resilience Perspective

    e&i Elektrotechnik & Informationstechnik (Special Issue on ’Smart Grid and Security’), vol. 130, no. 4-5, pp. 121-126

    2013

    Abstract anzeigen

    Increasing demand in energy consumption, missed modernisations, and the increasing difficulties in predicting power production due to volatile renewable energy sources (e.g., based on wind or sun) impose major challenges to the power grid. Power supply and power demand are closely interconnected with the need to maintain the power grid in a stable state with a sufficient quality of power. This requires energy-relevant information to be exchanged through the so called Energy Information Network. Communication, however, is challenging within the Energy Information Network due to privacy, security, resiliency, and quality-of-service requirements. Particularly, the resilience of communication within the Energy Information Network needs to be considered to maintain the power grid in a stable and controlled state. This paper suggests a Virtualised Energy Information Network (VEIN), where the Energy Information Network is divided into multiple virtual networks that run over a common substrate network. Furthermore, this paper discusses benefits of this approach in terms of privacy, security, and resilience and points out open research questions.

    DigitalElektrotechnik und Medientechnik

    Zeitschriftenartikel

    J. Botero, X. Hesselbach, M. Duelli, D. Schlosser, Andreas Fischer, H. Meer

    Energy Efficient Virtual Network Embedding

    IEEE Communications Letters, vol. 16, no. 5, pp. 756-759

    2012

    DOI: 10.1109/LCOMM.2012.030912.120082

    Abstract anzeigen

    Waste of energy due to over-provisioning and overdimensioning of network infrastructures has recently stimulated the interest on energy consumption reduction by Internet Service Providers (ISPs). By means of resource consolidation, network virtualization based architectures will enable energy saving. In this letter, we extend the well-known virtual network embedding problem (VNE) to energy awareness and propose a mixed integer program (MIP) which provides optimal energy efficient embeddings. Simulation results show the energy gains of the proposed MIP over the existing cost-based VNE approach.

    DigitalElektrotechnik und Medientechnik

    Beitrag (Sammelband oder Tagungsband)

    M. Duelli, D. Schlosser, J. Botero, X. Hesselbach, Andreas Fischer, H. Meer

    VNREAL: Virtual Network Resource Embedding Algorithms in the Framework ALEVIN

    Proceedings of the 7th Euro-NF Conference on Next-Generation Internet (NGI 2011) [Kaiserslautern; June 27-29, 2011]

    2011

    DOI: 10.1109/NGI.2011.5985874

    Abstract anzeigen

    Network virtualization is recognized as an enabling technology for the Future Internet that overcomes network ossification. However, it introduces a set of challenges. In any network virtualization environment, the problem of optimally mapping virtual resources to physical resources, known as virtual network embedding (VNE), is a critical challenge. Several algorithms attempting to solve this problem have been proposed in literature, so far. However, comparison of existing and new VNE algorithms is hard, as each algorithm focuses on different criteria. To that end, the VNREAL project introduces ALEVIN, a framework to compare different algorithms according to a set of metrics, easily incorporate new VNE algorithms, and evaluate these algorithms on a given scenario for arbitrary parameters.

    DigitalElektrotechnik und Medientechnik

    Beitrag (Sammelband oder Tagungsband)

    J. Botero, X. Hesselbach, M. Duelli, D. Schlosser, Andreas Fischer, H. Meer

    Flexible VNE Algorithms Analysis using ALEVIN

    Proceedings of the 11th Würzburg Workshop on IP: Joint ITG and Euro-NF Workshop "Visions of Future Generation Networks" (EuroView2011)

    2011

    Abstract anzeigen

    Network virtualization is recognized as an enabling technology for the Future Internet that overcomes network ossification. However, it introduces a set of challenges. In any network virtualization environment, the problem of optimally mapping virtual demands to physical resources, known as virtual network embedding (VNE), is a crucial challenge. This paper analyses the behaviour of the main algorithms proposed to solve VNE by means of the ALEVIN framework. The VNE algorithms are evaluated with regard to appropriate metrics such as: cost, revenue, and virtual network acceptance ratio. We also analyse the impact of the recently introduced hidden hop demand concept in the performance of the VNE algorithms.

    DigitalElektrotechnik und Medientechnik

    Zeitschriftenartikel

    Andreas Fischer, J. Botero, M. Duelli, D. Schlosser, X. Hesselbach, H. Meer, T. Margaria, J. Padberg, G. Taentzer, H. Hellbrück, N. Luttenberger, V. Turau

    ALEVIN - A Framework to Develop, Compare, and Analyze Virtual Network Embedding Algorithms

    Electronic Communications of the EASST, vol. 37, pp. 1-12

    2011

    Abstract anzeigen

    Network virtualization is recognized as an enabling technology for the Future Internet. Applying virtualization of network resources leads to the problem of mapping virtual resources to physical resources, known as “Virtual Network Embedding” (VNE). Several algorithms attempting to solve this problem have been discussed in the literature, so far. However, comparison of VNE algorithms is hard, as each algorithm focuses on different criteria. To that end, we introduce a framework to compare different algorithms according to a set of metrics, which allow to evaluate the algorithms and compute their results on a given scenario for arbitrary parameters.

    DigitalElektrotechnik und Medientechnik

    Beitrag (Sammelband oder Tagungsband)

    J. Rubio-Loyola, A. Astorga, J. Serrat, L. Lefevre, A. Cheniour, D. Muldowney, S. Davy, A. Galis, L. Mamatas, S. Clayman, D. Macedo, Z. Movahedi, G. Pujolle, Andreas Fischer, H. Meer

    Managability of Future Internet Networks from a Practical Viewpoint

    Towards the Future Internet - Emerging Trends from European Research

    2010

    ISBN: 978-1-60750-538-9

    DOI: 10.3233/978-1-60750-539-6-105

    Elektrotechnik und Medientechnik

    Beitrag (Sammelband oder Tagungsband)

    A. Galis, S. Denazis, A. Bassi, P. Giacomin, Andreas Berl, Andreas Fischer, H. Meer, J. Strassner, S. Davy, D. Macedo, G. Pujolle, J. Rubio-Loyola, J. Serrat, L. Lefevre, A. Cheniour

    Management Architecture and Systems for Future Internet Networks

    Towards the Future Internet, Washington, DC

    2009

    ISBN: 978-1607500070