@article{KrasnovaVeltriSpengleretal.2013,
  author    = {Krasnova, Hanna and Veltri, Natasha F. and Spengler, Klaus and G{\"u}nther, Oliver},
  title     = {"Deal of the Day" Platforms what drives Consumer loyalty?},
  series = {Business \& information systems engineering : the international journal of Wirtschaftsinformatik},
  volume    = {5},
  journal   = {Business \& information systems engineering : the international journal of Wirtschaftsinformatik},
  number    = {3},
  publisher = {Springer},
  address   = {Heidelberg},
  issn      = {1867-0202},
  doi       = {10.1007/s12599-013-0268-2},
  pages     = {165 -- 177},
  year      = {2013},
  abstract  = {"Deal of the Day" (DoD) platforms have quickly become popular by offering savings on local services, products and vacations. For merchants, these platforms represent a new marketing channel to advertise their products and services and attract new customers. DoD platform providers, however, struggle to maintaining a stable market share and profitability, because entry and switching costs are low. To sustain a competitive market position, DoD providers are looking for ways to build a loyal customer base. However, research examining the determinants of user loyalty in this novel context is scarce. To fill this gap, this study employs Grounded Theory methodology to develop a conceptual model of customer loyalty to a DoD provider. In the next step, qualitative insights are enriched and validated using quantitative data from a survey of 202 DoD users. The authors find that customer loyalty is in large part driven by monetary incentives, but can be eroded if impressions from merchant encounters are below expectations. In addition, enhancing the share of deals relevant for consumers, i.e. signal-to-noise ratio, and mitigating perceived risks of a transaction emerge as challenges. Beyond theoretical value, the results offer practical insights into how customer loyalty to a DoD provider can be promoted.},
  language  = {en}
}
@misc{GuentherZimmermannGoerlichetal.2013,
  author    = {G{\"u}nther, Oliver and Zimmermann, Matthias and G{\"o}rlich, Petra and Rost, Sophia and Korbach, Rebecca and Eckardt, Barbara and J{\"a}ger, Sophie and Szameitat, Ulrike and Schwaibold, Julia and Kampe, Heike},
  title     = {Portal = Historische Z{\"a}sur: J{\"u}dische Theologie an Uni Potsdam},
  number    = {04/2013},
  organization    = {Universit{\"a}t Potsdam, Referat f{\"u}r Presse- und {\"O}ffentlichkeitsarbeit},
  issn      = {1618-6893},
  doi       = {10.25932/publishup-44055},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-440555},
  pages     = {42},
  year      = {2013},
  abstract  = {Aus dem Inhalt: - Historische Z{\"a}sur: J{\"u}dische Theologie an Uni Potsdam - Wegen Umbau ge{\"o}ffnet - Eine ungew{\"o}hnliche Reise},
  language  = {de}
}
@article{GuenthervanPuttenBrecht2013,
  author    = {G{\"u}nther, Oliver and van Putten, Bart-Jan and Brecht, Franziska},
  title     = {Challenges in Business Case Development and Requirements for Business Case Frameworks},
  series = {Supporting Reuse in Business Case Development},
  journal   = {Supporting Reuse in Business Case Development},
  publisher = {Springer},
  address   = {Wiesbaden},
  isbn      = {978-3-658-01170-3},
  doi       = {10.1007/978-3-658-01171-0_2},
  pages     = {8 -- 22},
  year      = {2013},
  abstract  = {Business cases (BC) are often used to support information systems (IS) investment evaluation. Unfortunately, business case development (BCD) is a complex task, especially identifying and quantifying the benefits of a proposed investment. Although today's business case frameworks (BCF) support BCD to some extent, they have several limitations},
  language  = {en}
}
@misc{GuentherSuetterlinGoerlichetal.2013,
  author    = {G{\"u}nther, Oliver and S{\"u}tterlin, Sabine and G{\"o}rlich, Petra and Kampe, Heike and Scheuble, Sabrina and Rost, Sophia and J{\"a}ger, Sophie and Eckardt, Barbara and Jaeger, Felix and Zimmermann, Matthias and Hummel, Detlev and Horn-Conrad, Antje},
  title     = {Portal = Herausforderung und Chance: Forschung zum Demografischen Wandel},
  number    = {01/2013},
  organization    = {Universit{\"a}t Potsdam, Referat f{\"u}r Presse- und {\"O}ffentlichkeitsarbeit},
  issn      = {1618-6893},
  doi       = {10.25932/publishup-44051},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-440519},
  pages     = {42},
  year      = {2013},
  abstract  = {Aus dem Inhalt: - Herausforderung und Chance: Forschung zum Demografischen Wandel - Am Patienten orientiert - Welt der Steine},
  language  = {de}
}
@article{Guenther2013,
  author    = {G{\"u}nther, Oliver},
  title     = {Die Vorstandsperspektive},
  series = {Informatik-Spektrum},
  volume    = {36},
  journal   = {Informatik-Spektrum},
  number    = {6},
  publisher = {Springer},
  address   = {Heidelberg},
  issn      = {0170-6012},
  doi       = {10.1007/s00287-013-0743-7},
  pages     = {505 -- 507},
  year      = {2013},
  language  = {de}
}
@article{Guenther2013,
  author    = {G{\"u}nther, Oliver},
  title     = {Vorwort},
  isbn      = {978-3-941880-75-7},
  year      = {2013},
  language  = {de}
}
@article{FabianKunzMuelleretal.2013,
  author    = {Fabian, Benjamin and Kunz, Steffen and M{\"u}ller, Sebastian and G{\"u}nther, Oliver},
  title     = {Secure federation of semantic information services},
  series = {Decision support systems : DSS ; the international journal},
  volume    = {55},
  journal   = {Decision support systems : DSS ; the international journal},
  number    = {1},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0167-9236},
  doi       = {10.1016/j.dss.2012.05.049},
  pages     = {385 -- 398},
  year      = {2013},
  abstract  = {fundamental challenge for product-lifecycle management in collaborative value networks is to utilize the vast amount of product information available from heterogeneous sources in order to improve business analytics, decision support, and processes. This becomes even more challenging if those sources are distributed across multiple organizations. Federations of semantic information services, combining service-orientation and semantic technologies, provide a promising solution for this problem. However, without proper measures to establish information security, companies will be reluctant to join an information federation, which could lead to serious adoption barriers. Following the design science paradigm, this paper presents general objectives and a process for designing a secure federation of semantic information services. Furthermore, new as well as established security measures are discussed. Here, our contributions include an access-control enforcement system for semantic information services and a process for modeling access-control policies across organizations. In addition, a comprehensive security architecture is presented. An implementation of the architecture in the context of an application scenario and several performance experiments demonstrate the practical viability of our approach.},
  language  = {en}
}