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Bayreuther Arbeitspapiere zur Wirtschaftsinformatik

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  • Torsten Eymann (21) (remove)

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  • 2005 (6)
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  • Report (16)
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  • English (21) (remove)

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  • Grid Computing (17)
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53
Show/Hide Abstract The service-productivity learning cockpit – a business intelligence tool for service enterprises (2012)
Sebastian Walther Gaurang Phadke Torsten Eymann
The paper describes the development of an agent-based simulation tool for hospital managers to manage their productivity of services, especially in the context of supporting services like patient transport logistics. The learning cockpit allows hospital managers to see how the change of inputs changes the overall perceived customer values of all stakeholders and therefore to get a visualization of the impacts their decisions cause. The paper introduces the general research domain service-productivity, followed by a description of the development steps of artefact creation. The learning cockpit is part of a research project called BELOUGA, which is funded by the German government.
51
Show/Hide Abstract Tagungsband zum Doctoral Consortium der WI 2011 (2011)
Torsten Eymann
Since the early 1990es, young researchers participate in the doctoral consortium series, co-located with the "Wirtschaftsinformatik" conference. This volume contains the selected papers of 20 PhD candidates of the 2011 doctoral consortium in Zurich.
46
Show/Hide Abstract A Survey on Reputation Systems for Artificial Societies (2009)
Tina Balke Stefan König Torsten Eymann
The Internet has caused a revolution in trading. Especially cheap items are now easy to buy and sell on the Internet. As a consequence, sellers nowadays offer a wide range of products on the web, creating an abundance of choice for consumers. Consumers have the opportunity to browse on different auction sites for the item they really want. Along with this success story, however, came the stories of people being cheated by fraudulent online sellers. These frauds cover a range from not delivering what has been promised, the overrating of a product´s condition, to deliberate acts of theft. They are a result of so-called asymmetric information. Trust and reputation mechanisms are intended to address this asymmetric information distribution. This article surveys the most common trust and reputation systems.
31
Show/Hide Abstract A Scalability Analysis of Grid allocation Mechanisms (2008)
Michael Reinicke Werner Streitberger Torsten Eymann
This article examines the broker´s behavior with regard to a varying number of participating nodes and shows that incremental losses have to be accepted in central resource allocation when introducing new nodes.
29
Show/Hide Abstract CATNETS Final Activity Report (2007)
Werner Streitberger Torsten Eymann
This paper presents the final activity report of the CATNETS project. It summarizes the project objectives, the contractors involved, the work performed and the final results. A description of the dissemination activities concludes the report.
28
Show/Hide Abstract Performance Evaluation - Annual Report Year 3 (2007)
Georg Buss Nils Parasie Daniel Veit Michele Catalano Pablo Chacin Isaac Chao Felix Freitag Leandro Navarro Omer F. Rana Liviu Joita Björn Schnizler Werner Streitberger Torsten Eymann
This report describes the work done and results obtained in third year of the CATNETS project. Experiments carried out with the different configurations of the prototype are reported and simulation results are evaluated with the CATNETS metrics framework. The applicability of the Catallactic approach as market model for service and resource allocation in application layer networks is assessed based on the results and experience gained both from the prototype development and simulations.
27
Show/Hide Abstract Proof-of-Concept Application - Annual Report Year 3 (2007)
Oscar Ardaiz Pablo Chacin Isaac Chao Felix Freitag Leandro Navarro Liviu Joita Omer F. Rana Werner Streitberger Sebastian Hudert Torsten Eymann
In this report the progress of developing the proof-of-concept application in the CATNETS project is presented. Hence the development of the necessary performance measuring components as well as a distributed application to execute on economic-enhanced Grid/P2P platforms and middleware integration are described.
26
Show/Hide Abstract Simulator Development - Annual Report Year 3 (2007)
Werner Streitberger Torsten Eymann Floriano Zini Björn Schnizler Hong Tuan Kiet Vo
This document describes the progress of the simulator development with in the third year of the CATNETS project. The refinement of the simulator as well as a detailed guide to conducting simulations is presented.
25
Show/Hide Abstract A Policy Framework including Trust and Reputation in Grid Environments (2007)
Torsten Eymann Raimund Matros Stefan König
This paper examines the role of policies in different grid environments. A Grid technology becomes standardized and stable, various business models are envented and increasingly applied, and economic implications can be observed.Asymmetrically distributed information may allow for opportunistic behaviour of service providers or users who exploit the information gap between providers and consumers on the quality of services.
23
Show/Hide Abstract Theoretical and Computation Basis for CATNETS - Annual Report Year 3 (2007)
Daniel Veit Georg Buss Björn Schnizler Dirk Neumann Werner Streitberger Torsten Eymann
In this document the developments in defining the computational and theoretical framework for economical resource allocation are described. Accordingly the formal specification of the market mechanisms, bidding strategies of the involved agents and the integration of the market mechanisms into the simulator were refined.

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