@inproceedings{573,
abstract = {In software markets of the future, customer-specific software will be developed on demand from distributed software and hardware services available on world-wide markets. Having a request, services have to be automatically discovered and composed. For that purpose, services have to be matched based on their specifications. For the accurate matching, services have to be described comprehensively that requires the integration of different domain-specific languages (DSLs) used for functional, non-functional, and infrastructural properties. Since different service providers use plenty of language dialects to model the same service property, their integration is needed for the matching. In this paper, we propose a framework for integration of DSLs. It is based on a parameterized abstract core language that integrates key concepts needed to describe a service. Parts of the core language can be substituted with concrete DSLs. Thus, the framework serves as a basis for the comprehensive specification and automatic matching of services.},
author = {Arifulina, Svetlana},
booktitle = {Proceedings of the Doctoral Symposium of the 5th International Conference on Software Language Engineering 2012, Dresden, Germany (SLE (Doctoral Symposium))},
editor = {W. Eisenecker, Ulrich and Bucholdt, Christian},
pages = {23----26},
title = {{Towards a Framework for the Integration of Modeling Languages}},
year = {2012},
}
@techreport{578,
abstract = {This paper analyzes the stability of capital tax harmonization agreements in a stylized model where countries have formed coalitions which set a common tax rate in order to avoid the inefficient fully non-cooperative Nash equilibrium. In particular, for a given coalition structure we study to what extend the stability of tax agreements is affected by the coalitions that have formed. In our set-up, countries are symmetric, but coalitions can be of arbitrary size. We analyze stability by means of a repeated game setting employing simple trigger strategies and we allow a sub-coalition to deviate from the coalitional equilibrium. For a given form of punishment we are able to rank the stability of different coalition structures as long as the size of the largest coalition does not change. Our main results are: (1) singleton regions have the largest incentives to deviate, (2) the stability of cooperation depends on the degree of cooperative behavior ex-ante.},
author = {Brangewitz, Sonja and Brockhoff, Sarah},
publisher = {Universität Paderborn},
title = {{Stability of Coalitional Equilibria within Repeated Tax Competition}},
year = {2012},
}
@inproceedings{580,
abstract = {We present and study a new model for energy-aware and profit-oriented scheduling on a single processor.The processor features dynamic speed scaling as well as suspension to a sleep mode.Jobs arrive over time, are preemptable, and have different sizes, values, and deadlines.On the arrival of a new job, the scheduler may either accept or reject the job.Accepted jobs need a certain energy investment to be finished in time, while rejected jobs cause costs equal to their values.Here, power consumption at speed $s$ is given by $P(s)=s^{\alpha}+\beta$ and the energy investment is power integrated over time.Additionally, the scheduler may decide to suspend the processor to a sleep mode in which no energy is consumed, though awaking entails fixed transition costs $\gamma$.The objective is to minimize the total value of rejected jobs plus the total energy.Our model combines aspects from advanced energy conservation techniques (namely speed scaling and sleep states) and profit-oriented scheduling models.We show that \emph{rejection-oblivious} schedulers (whose rejection decisions are not based on former decisions) have – in contrast to the model without sleep states – an unbounded competitive ratio.It turns out that the jobs' value densities (the ratio between a job's value and its work) are crucial for the performance of such schedulers.We give an algorithm whose competitiveness nearly matches the lower bound w.r.t\text{.} the maximum value density.If the maximum value density is not too large, the competitiveness becomes $\alpha^{\alpha}+2e\alpha$.Also, we show that it suffices to restrict the value density of low-value jobs only.Using a technique from \cite{Chan:2010} we transfer our results to processors with a fixed maximum speed.},
author = {Cord-Landwehr, Andreas and Kling, Peter and Mallmann Trenn, Fredrik},
booktitle = {Proceedings of the 1st Mediterranean Conference on Algorithms (MedAlg)},
editor = {Even, Guy and Rawitz, Dror},
pages = {218--231},
title = {{Slow Down & Sleep for Profit in Online Deadline Scheduling}},
doi = {10.1007/978-3-642-34862-4_17},
year = {2012},
}
@inproceedings{585,
abstract = {In a cloud-computing scenario where users buy software from software providers and execute it at computing centers, a digital rights management (DRM) system has to be in place to check the software licenses during each software execution. However, the exposure of users to privacy invasion in the presence of DRM systems is problematic.We come up with a concept that unites software providers' and users' demands for a secure and privacy-preserving DRM system for cloud computing. The employment of proxy re-encryption allows for a prevention of profile building (under pseudonym) of users by any party.},
author = {Petrlic, Ronald},
booktitle = {Proceedings of 4th International Symposium on Cyberspace Safety and Security (CSS)},
pages = {194--211},
title = {{Proxy Re-Encryption in a Privacy-Preserving Cloud Computing DRM Scheme}},
doi = {10.1007/978-3-642-35362-8_16},
year = {2012},
}
@inproceedings{597,
abstract = {We consider strategic games in which each player seeks a mixed strategy to minimize her cost evaluated by a concave valuation V (mapping probability distributions to reals); such valuations are used to model risk. In contrast to games with expectation-optimizer players where mixed equilibria always exist [15, 16], a mixed equilibrium for such games, called a V -equilibrium, may fail to exist, even though pure equilibria (if any) transfer over. What is the impact of such valuations on the existence, structure and complexity of mixed equilibria? We address this fundamental question for a particular concave valuation: expectation plus variance, denoted as RA, which stands for risk-averse; so, variance enters as a measure of risk and it is used as an additive adjustment to expectation. We obtain the following results about RA-equilibria:- A collection of general structural properties of RA-equilibria connecting to (i) E-equilibria and Var-equilibria, which correspond to the expectation and variance valuations E and Var, respectively, and to (ii) other weaker or incomparable equilibrium properties.- A second collection of (i) existence, (ii) equivalence and separation (with respect to E-equilibria), and (iii) characterization results for RA-equilibria in the new class of player-specific scheduling games. Using examples, we provide the first demonstration that going from E to RA may as well create new mixed (RA-)equilibria.- A purification technique to transform a player-specific scheduling game on identical links into a player-specific scheduling game so that all non-pure RA-equilibria are eliminated while new pure equilibria cannot be created; so, a particular game on two identical links yields one with no RA-equilibrium. As a by-product, the first-completeness result for the computation of RA-equilibria follows.},
author = {Mavronicolas, Marios and Monien, Burkhard},
booktitle = {Proceedings of the 5th International Symposium on Algorithmic Game Theory (SAGT)},
pages = {239--250},
title = {{Minimizing Expectation Plus Variance}},
doi = {10.1007/978-3-642-33996-7_21},
year = {2012},
}
@misc{600,
author = {Feldkord, Björn},
publisher = {Universität Paderborn},
title = {{Lokale Swaps und überholte Informationen in Basic Network Creation Games}},
year = {2012},
}
@misc{605,
author = {Isenberg, Florian},
publisher = {Universität Paderborn},
title = {{Implementierung eines adaptiven Verfahrens zur Linearisierung von nicht-konvexen, nichtlinearen Wassernetzmodellen mit Hilfe einer Fehlerabschätzung}},
year = {2012},
}
@misc{566,
author = {Hilger, Ina},
publisher = {Universität Paderborn},
title = {{Untersuchung von Modellen zur operativen Planung in Trinkwasserversorgungsnetzwerken}},
year = {2012},
}
@article{5497,
author = {Maekelburger, B and Schwens, C and Kabst, Rüdiger},
journal = {Journal of International Business Studies (JIBS).},
number = {5},
pages = {458--476},
title = {{Asset Specificity and Foreign Market Entry Mode Choice of Small and Medium-Sized Enterprises: The Moderating Influence of Knowledge Safeguards and Institutional Safeguards.}},
volume = {42},
year = {2012},
}
@article{5512,
author = {Frese, M and Bausch, A and Schmidt, P and Rauch, A and Kabst, Rüdiger},
journal = {Foundations and Trends in Entrepreneurship. },
number = {1},
pages = {1--62},
title = {{Evidence-based entrepreneurship (EBE): Cumulative science, action principles, and bridging the gap between science and practice.}},
volume = {8},
year = {2012},
}