Wirtschaftsinformatik 47(4) - August 2005

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  • Zeitschriftenartikel
    Integrierte Ex-ante-Rendite-/Risikobewertung von IT-Investitionen
    (Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Wehrmann, Alexander; Zimmermann, Steffen
    In enterprises decisions whether to undertake investments into IT projects or not have to be made regularly. Regarding the fact that two out of three IT projects fail or do not reach their expected value the need for an integrated valuation which addresses returns and connected risks is evident. The impact of development aspects (e.g. the process model used) and project size on the risk-return position of IT projects is demonstrated and it is shown how this can be taken into account when valuing, optimizing and selecting IT investments.
  • Zeitschriftenartikel
    Erfahrungsbericht über die doktorandenförderung in der wirtschaftsinformatik
    (Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Abels, Sven; Habenicht, Ilka; Häberle, Oliver; Ulbrich, Frank; Walter, Sven
  • Zeitschriftenartikel
    Success factors and impacts of mobile business applications: Results from a mobile e-procurement study
    (Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Müller, Günter
  • Zeitschriftenartikel
    Interview mit Norbert Szyperski über die „Innovationskultur in Deutschland“
    (Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Heinzl, Armin; Hildenbrand, Tobias
  • Zeitschriftenartikel
    WI — Studierendenforum
    (Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Weinhardt, Ch.; Gimpel, Henner; Luckner, Stefan; Müller, Markus; Räder, Dominik; Squarr, Christof; Wewers, Marc
  • Zeitschriftenartikel
    Eine Dienstgüte unterstützende Webservice-Architektur für flexible Geschäftsprozesse
    (Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Berbner, Rainer; Heckmann, Oliver; Mauthe, Andreas; Steinmetz, Ralf
    Web services as a technology to enable distributed business processes gain in importance. However, the support of Quality of Service (QoS) is crucial in this context. Thus, we present an integrated web service architecture with comprehensive QoS support. The architecture we introduce in this paper supports the assessment of web services to assure that only web services will be used in critical business processes that satisfy the requirements defined by the user. The selection and execution of a certain web service depends on its QoS-properties that must be guaranteed in Service Level Agreements (SLAs). The compliance with SLAs is monitored by the system as well. Furthermore we introduce a prototypical implementation of our web service architecture.
  • Zeitschriftenartikel
    Vergleichende Buchbesprechung
    (Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Elzenheimer, Marcus; Grollius, Tobias; Heinemann, Elisabeth; Sternhuber, Joachim
  • Zeitschriftenartikel
    Toll Collect als Forschungsgegenstand
    (Wirtschaftsinformatik: Vol. 47, No. 4, 2005) König, Wolfgang
  • Zeitschriftenartikel
    WI — Dissertationen
    (Wirtschaftsinformatik: Vol. 47, No. 4, 2005)
  • Zeitschriftenartikel
    Erlösquellen und Preismodelle für den Business-to-Consumer-Bereich im Internet
    (Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Skiera, Bernd; Spann, Martin; Walz, Uwe
    This article discusses revenue sources and pricing models for business-to-consumer electronic commerce. We outline why revenue sources and pricing models should be separated, how pricing models can contribute to strategic and tactic goals and which pricing models the Internet facilitates mostly. Thereby, we discuss the different forms of price discrimination and the possibilities of interactive pricing models.