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- ZeitschriftenartikelIntegrierte Ex-ante-Rendite-/Risikobewertung von IT-Investitionen(Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Wehrmann, Alexander; Zimmermann, SteffenIn 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.
- ZeitschriftenartikelEine Dienstgüte unterstützende Webservice-Architektur für flexible Geschäftsprozesse(Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Berbner, Rainer; Heckmann, Oliver; Mauthe, Andreas; Steinmetz, RalfWeb 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.
- ZeitschriftenartikelSuccess factors and impacts of mobile business applications: Results from a mobile e-procurement study(Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Müller, Günter
- ZeitschriftenartikelToll Collect als Forschungsgegenstand(Wirtschaftsinformatik: Vol. 47, No. 4, 2005) König, Wolfgang
- ZeitschriftenartikelWI — Dissertationen(Wirtschaftsinformatik: Vol. 47, No. 4, 2005)
- ZeitschriftenartikelVergleichende Buchbesprechung(Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Elzenheimer, Marcus; Grollius, Tobias; Heinemann, Elisabeth; Sternhuber, Joachim
- ZeitschriftenartikelWI — Studierendenforum(Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Weinhardt, Ch.; Gimpel, Henner; Luckner, Stefan; Müller, Markus; Räder, Dominik; Squarr, Christof; Wewers, Marc
- ZeitschriftenartikelInterview mit Norbert Szyperski über die „Innovationskultur in Deutschland“(Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Heinzl, Armin; Hildenbrand, Tobias
- ZeitschriftenartikelErfahrungsbericht über die doktorandenförderung in der wirtschaftsinformatik(Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Abels, Sven; Habenicht, Ilka; Häberle, Oliver; Ulbrich, Frank; Walter, Sven
- ZeitschriftenartikelErratum to: Dissertationserhebung in der wirtschaftsinformatik 2004(Wirtschaftsinformatik: Vol. 47, No. 4, 2005) Heidecke, Florian; Back, Andrea; Brenner, Walter