@misc{341, author = {{Fang Cheng, Terry}}, publisher = {{Universität Paderborn}}, title = {{{Two-Sided Market and Game Console Vendors}}}, year = {{2014}}, } @misc{342, author = {{Klauke, Christoph}}, publisher = {{Universität Paderborn}}, title = {{{Transformation graphischer Protokollspezifikationen in Model-Checker-Anfragen}}}, year = {{2014}}, } @phdthesis{343, author = {{Künsemöller, Jörn}}, publisher = {{Universität Paderborn}}, title = {{{Tragedy of the Common Cloud - Game Theory on the Infrastructure-as-a-Service Market}}}, year = {{2014}}, } @inproceedings{3439, author = {{Klör, Benjamin and Bräuer, Sebastian and Beverungen, Daniel and Matzner, Martin}}, booktitle = {{Proceedings of the Multikonferenz Wirtschaftsinformatik 2014 (MKWI 2014)}}, location = {{Paderborn}}, pages = {{2047----2066}}, title = {{{IT-basierte Dienstleistungen für die Elektromobilität --- Konzeptioneller Rahmen und Literaturanalyse}}}, year = {{2014}}, } @inproceedings{344, author = {{Becker, Matthias and Becker, Steffen and Besova, Galina and Walther, Sven and Wehrheim, Heike}}, booktitle = {{Proceedings of the 40th Euromicro Conference on Software Engineering and Advanced Applications (Work in Progress Session)}}, title = {{{Towards Systematic Configuration for Architecture Validation}}}, year = {{2014}}, } @inproceedings{345, abstract = {{Automatically composing service-based software solutions is a challenging task. Considering context information during this service composition process is even more challenging. In domains such as image processing, however, context-sensitivity is inherent and cannot be ignored when developing techniques for automatic service composition. Formal approaches tend to create ambiguous solutions, whenever the expressive power of the applied formalism is limited. For example, services may have the same formal specification, although their actual functionality depends on the concrete context. In order to satisfy individual user requests while providing data-dependent functionality, formal approaches have to be extended. We propose to incorporate Reinforcement Learning techniques and combine them with planning based composition approaches. While planning ensures formally correct solutions, learning enables the composition process to resolve ambiguity by implicitly considering context information. Preliminary results show that our combined approach adapts to a static context while still satisfying formally specified requirements.}}, author = {{Jungmann, Alexander and Kleinjohann, Bernd}}, booktitle = {{Proceedings of the 6th International Conference on Cloud Computing Technology and Science (CloudCom)}}, pages = {{755--758}}, title = {{{Towards Context-Sensitive Service Composition for Service-Oriented Image Processing}}}, doi = {{10.1109/CloudCom.2014.154}}, year = {{2014}}, } @inproceedings{346, abstract = {{One future goal of service-oriented computing is to realize global markets of composed services. On such markets, service providers offer services that can be flexibly combined with each other. However, most often, market participants are not able to individually estimate the quality of traded services in advance. As a consequence, even potentially profitable transactions between customers and providers might not take place. In the worst case, this can induce a market failure. To overcome this problem, we propose the incorporation of reputation information as an indicator for expected service quality. We address On-The-Fly Computing as a representative environment of markets of composed services. In this environment, customers provide feedback on transactions. We present a conceptual design of a reputation system which collects and processes user feedback, and provides it to participants in the market. Our contribution includes the identification of requirements for such a reputation system from a technical and an economic perspective. Based on these requirements, we propose a flexible solution that facilitates the incorporation of reputation information into markets of composed services while simultaneously preserving privacy of customers who provide feedback. The requirements we formulate in this paper have just been partially met in literature. An integrated approach, however, has not been addressed yet.}}, author = {{Brangewitz, Sonja and Jungmann, Alexander and Petrlic, Ronald and Platenius, Marie Christin}}, booktitle = {{Proceedings of the 6th International Conferences on Advanced Service Computing (SERVICE COMPUTATION)}}, pages = {{49--57}}, title = {{{Towards a Flexible and Privacy-Preserving Reputation System for Markets of Composed Services}}}, year = {{2014}}, } @inproceedings{347, abstract = {{Dynamic thread duplication is a known redundancy technique for multi-cores. The approach duplicates a thread under observation for some time period and compares the signatures of the two threads to detect errors. Hybrid multi-cores, typically implemented on platform FPGAs, enable the unique option of running the thread under observation and its copy in different modalities, i.e., software and hardware. We denote our dynamic redundancy technique on hybrid multi-cores as thread shadowing. In this paper we present the concept of thread shadowing and an implementation on a multi-threaded hybrid multi-core architecture. We report on experiments with a block-processing application and demonstrate the overheads, detection latencies and coverage for a range of thread shadowing modes. The results show that trans-modal thread shadowing, although bearing long detection latencies, offers attractive coverage at a low overhead.}}, author = {{Meisner, Sebastian and Platzner, Marco}}, booktitle = {{Proceedings of the 10th International Symposium on Applied Reconfigurable Computing (ARC)}}, editor = {{Goehringer, Diana and Santambrogio, MarcoDomenico and Cardoso, JoãoM.P. and Bertels, Koen}}, pages = {{283--290}}, publisher = {{Springer}}, title = {{{Thread Shadowing: Using Dynamic Redundancy on Hybrid Multi-cores for Error Detection}}}, doi = {{10.1007/978-3-319-05960-0_30}}, year = {{2014}}, } @misc{348, author = {{Rüthing, Christoph}}, publisher = {{Universität Paderborn}}, title = {{{The Xilinx Zynq Architecture as a Platform for Reconfigurable Heterogeneous Multi-Cores}}}, year = {{2014}}, } @techreport{349, abstract = {{Identity-based cryptography has attracted attention in the cryptographic research communityin recent years. Despite the importance of cryptographic schemes for applicationsin business and law, the legal implications of identity-based cryptography have not yetbeen discussed. We investigate how identity-based signatures fit into the legal framework.We focus on the European Signature Directive, but also take the UNCITRAL Model Law onElectronic Signatures into account. In contrast to previous assumptions, identity-basedsignature schemes can, in principle, be used even for qualified electronic signatures,which can replace handwritten signatures in the member states of the European Union.We derive requirements to be taken into account in the development of future identitybasedsignature schemes.}}, author = {{Sorge, Christoph}}, title = {{{The Legal Classification of Identity-Based Signatures}}}, year = {{2014}}, } @article{3491, author = {{Becker, Jörg and Beverungen, Daniel and Knackstedt, Ralf and Peter Rauer, Hans and Sigge, Daniel}}, journal = {{Information Systems and e-Business Management}}, number = {{3}}, pages = {{337----365}}, title = {{{On the Ontological Expressiveness of Conceptual Modeling Grammars for Service Productivity Management}}}, doi = {{10.1007/s10257-013-0219-y}}, year = {{2014}}, } @article{3492, author = {{Beverungen, Daniel}}, journal = {{Business and Information Systems Engineering}}, number = {{4}}, pages = {{191----202}}, title = {{{Exploring the Interplay of the Design and Emergence of Business Processes as Organizational Routines}}}, doi = {{10.1007/s12599-014-0335-3}}, year = {{2014}}, } @article{3493, author = {{Beverungen, Daniel}}, journal = {{WIRTSCHAFTSINFORMATIK}}, number = {{4}}, pages = {{209----222}}, title = {{{Über das Zusammenwirken der Gestaltung und Emergenz von Geschäftsprozessen als Organisationsroutinen}}}, doi = {{10.1007/s11576-014-0425-3}}, year = {{2014}}, } @techreport{350, abstract = {{Customers continuously evaluate the credibility and reliability of a range of signals both separately and jointly. However, existing econometric studies pay insufficient attention to the interactions and complex combinations of these signals, and are typically limited as a result of difficulties controlling for multicollinearity and endogeneity in their data. We develop a novel theoretical approach to address these issues and study different signaling effects (i.e., word-of-mouth, brand reputation, and distribution strategy) on customer perceptions. Using data on the US video games market, we apply a fuzzy set qualitative comparative analysis (fsQCA) to account for cause-effect relationships. The results of our study address a number of key issues in the economics and management literature. First, our results support the contention that reviews from professional critics act as a signal of product quality and therefore positively influence unit sales, as do the discriminatory effects of prices and restricted age ratings. Second, we find evidence to support the use of brand extension strategies as marketing tools that create spillover effects and support the launch of new products.}}, author = {{Kaimann, Daniel and Cox, Joe}}, publisher = {{Universität Paderborn}}, title = {{{The Interaction of Signals: A Fuzzy set Analysis of the Video Game Industry}}}, year = {{2014}}, } @misc{351, author = {{Holzweißig, Lena}}, publisher = {{Universität Paderborn}}, title = {{{The Impact of Customer Reviews and Reputation on Hotel Prices}}}, year = {{2014}}, } @phdthesis{352, author = {{Scheel, Friedrich}}, publisher = {{Universität Paderborn}}, title = {{{The Economics of Individual Behavior in Competitive Environments: Empirical Evidence from Real-Life Tournaments}}}, year = {{2014}}, } @inproceedings{353, abstract = {{There are many technologies for the automation of processesthat deal with services; examples are service discovery and composition.Automation of these processes requires that the services are described semantically. However, semantically described services are currently not oronly rarely available, which limits the applicability of discovery and composition approaches. The systematic support for creating new semanticservices usable by automated technologies is an open problem.We tackle this problem with a template based approach: Domain independent templates are instantiated with domain specific services andboolean expressions. The obtained services have semantic descriptionswhose correctness directly follows from the correctness of the template.Besides the theory, we present experimental results for a service repository in which 85% of the services were generated automatically.}}, author = {{Mohr, Felix and Walther, Sven}}, booktitle = {{Proceedings of the 14th International Conference on Software Reuse (ICSR)}}, pages = {{188--203}}, title = {{{Template-based Generation of Semantic Services}}}, doi = {{10.1007/978-3-319-14130-5_14}}, year = {{2014}}, } @inproceedings{3538, author = {{Rötzmeier-Keuper, Julia and Wünderlich, Nancy}}, booktitle = {{ Proceedings of the 39th Annual Macromarketing Conference}}, location = {{London, GB}}, title = {{{Customer collectives in healthcare: The transformative potential of service to overcome consumer vulnerability}}}, year = {{2014}}, } @inproceedings{354, abstract = {{In distributed cloud computing, application deployment across multiple sites can improve quality of service. Recent research developed algorithms to find optimal locations for virtual machines. However, those algorithms assume to have either single-tier applications or a fixed number of virtual machines – a strong simplification of reality. This paper investigates the placement and scaling of complex application architectures. An application is dynamically scaled to fit both the current demand situation and the currently available infrastructure resources. We compare two approaches: The first one is based on virtual network embedding. The second approach is a novel method called Template Embedding. It is based on a hierarchical 1-allocation hub flow problem and combines applica- tion scaling and embedding in one step. Extensive experiments on 43200 network configurations showed that Template Embedding outperforms virtual network embedding in all cases in three metrics: success rate, solution quality, and runtime. This positive result shows that template embedding is a promising approach for distributed cloud resource allocation.}}, author = {{Keller, Matthias and Robbert, Christoph and Karl, Holger}}, booktitle = {{Proceedings of 7th International Conference on Utility and Cloud Computing (UCC)}}, pages = {{387----395}}, title = {{{Template Embedding: Using Application Architecture to Allocate Resources in Distributed Clouds}}}, doi = {{10.1109/UCC.2014.49}}, year = {{2014}}, } @inproceedings{3541, author = {{Rötzmeier-Keuper, Julia and Wünderlich, Nancy}}, booktitle = {{Proceedings of the AMA SERVSIG International Service Research Conference}}, location = {{Thessaloniki, GR}}, title = {{{ Interdependent Relationships Between and among Service Providers and Customer Collectives.}}}, year = {{2014}}, }