@article{464, abstract = {{Topological self-stabilization is an important concept to build robust open distributed systems (such as peer-to-peer systems) where nodes can organize themselves into meaningful network topologies. The goal is to devise distributed algorithms where nodes forward, insert, and delete links to neighboring nodes, and that converge quickly to such a desirable topology, independently of the initial network configuration. This article proposes a new model to study the parallel convergence time. Our model sheds light on the achievable parallelism by avoiding bottlenecks of existing models that can yield a distorted picture. As a case study, we consider local graph linearization—i.e., how to build a sorted list of the nodes of a connected graph in a distributed and self-stabilizing manner. In order to study the main structure and properties of our model, we propose two variants of a most simple local linearization algorithm. For each of these variants, we present analyses of the worst-case and bestcase parallel time complexities, as well as the performance under a greedy selection of the actions to be executed. It turns out that the analysis is non-trivial despite the simple setting, and to complement our formal insights we report on our experiments which indicate that the runtimes may be better in the average case.}}, author = {{Gall, Dominik and Jacob, Riko and Richa, Andrea W. and Scheideler, Christian and Schmid, Stefan and Täubig, Hanjo }}, journal = {{Theory of Computing Systems}}, number = {{1}}, pages = {{110--135}}, publisher = {{Springer}}, title = {{{A Note on the Parallel Runtime of Self-Stabilizing Graph Linearization}}}, doi = {{10.1007/s00224-013-9504-x}}, year = {{2014}}, } @techreport{465, abstract = {{This article presents a novel Mixed Integer Nonlinear Programming (MINLP) approach for finding a renewal plan of pipes in a water distribution system. We formulate a MINLP model for finding the times of renewal and suited measurements of pipe dimensions in a multi-year planning horizon. The model includes a multi-period hydraulic simulation of the distribution systems behaviour thereby respecting the friction caused headloss as a nonlinear constraint. We apply the MINLP solver Bonmin to a test network and present first numerical results. The models embedding into a general solution framework for water network problems consisting of network reduction and simulation steps in an interated way, is beign discussed. This latter discussion corresponds well to the recent results by C. Hallmann for the problem of tank planning within the mentioned solution framework that has been presented there for the first time.}}, author = {{Stapel, Florian and Suhl, Leena}}, publisher = {{Universität Paderborn}}, title = {{{A MINLP Approach for Planning the Renewal of Pipes in Drinking Water Networks}}}, year = {{2014}}, } @misc{466, author = {{Brand, Marcel}}, publisher = {{Universität Paderborn}}, title = {{{A generalized loop accelerator implemented as a coarse grained array}}}, year = {{2014}}, } @inproceedings{4664, author = {{Zhou, Chen and Feng, Yuanhua}}, location = {{University of Pisa, Italy}}, title = {{{Data-driven estimation of realized kernels under dependent microstructure noise and further analysis using the Semi-FI-Log-ACD}}}, year = {{2014}}, } @article{467, abstract = {{Financial benefits are an important factor when cloud infrastructure is considered to meet processing demand. The dynamics of on-demand pricing and service usage are investigated in a two-stage game model for a monopoly Infrastructure-as-a-Service (IaaS) market. The possibility of hybrid clouds (public clouds plus own infrastructure) turns out to be essential in order that not only the provider but also the clients have significant benefits from on-demand services. Even if the client meets all demand in the public cloud, the threat of building a hybrid cloud keeps the instance price low. This is not the case when reserved instances are offered as well. Parameters like load profiles and economies of scale have a huge effect on likely future pricing and on a cost-optimal split-up of client demand between either a client’s own data center and a public cloud service or between reserved and on-demand cloud instances.}}, author = {{Künsemöller, Jörn and Karl, Holger}}, journal = {{Future Generation Computer Systems}}, pages = {{44----52}}, publisher = {{Elsevier}}, title = {{{A Game-Theoretic Approach to the Financial Benefits of Infrastructure-as-a-Service}}}, doi = {{10.1016/j.future.2014.03.005}}, year = {{2014}}, } @article{4694, author = {{Kohlborn, T and Müller, Oliver and Pöppelbuss, J and Röglinger, M}}, issn = {{1463-7154}}, journal = {{Business Process Management Journal}}, number = {{4}}, pages = {{3----6}}, title = {{{New frontiers in business process management}}}, doi = {{10.1108/BPMJ-02-2014-0015}}, year = {{2014}}, } @article{4695, author = {{Debortoli, Stefan and Müller, Oliver and vom Brocke, Jan}}, isbn = {{0910-8327 (Print)$\backslash$n0910-8327 (Linking)}}, issn = {{18670202}}, journal = {{Business and Information Systems Engineering}}, keywords = {{Big data, Business intelligence, Competencies, Latent semantic analysis, Text mining}}, number = {{5}}, pages = {{289----300}}, title = {{{Comparing business intelligence and big data skills: A text mining study using job advertisements}}}, doi = {{10.1007/s12599-014-0344-2}}, year = {{2014}}, } @article{4696, author = {{vom Brocke, Jan and Debortoli, Stefan and Reuter, Nadine and Müller, Oliver}}, issn = {{15293181}}, journal = {{Communications of the Association for Information Systems}}, keywords = {{Advanced business analytics, Big Data, Business intelligence, IT business value, In-memory technology, OLAP, OLTP, Realtime analytics, Sentiment analysis}}, pages = {{151----167}}, title = {{{How In-Memory Technology Can Create Business Value: Lessons Learned from Hilti}}}, doi = {{10.17705/1CAIS.03407}}, year = {{2014}}, } @article{4697, author = {{Sommerauer, Peter and Müller, Oliver}}, isbn = {{0360-1315}}, issn = {{03601315}}, journal = {{Computers and Education}}, keywords = {{Augmented reality, Cognitive theory of multimedia learning, Field experiment, Informal learning, Museum}}, pages = {{59----68}}, title = {{{Augmented reality in informal learning environments: A field experiment in a mathematics exhibition}}}, doi = {{10.1016/j.compedu.2014.07.013}}, year = {{2014}}, } @techreport{4750, author = {{Ortmann, Regina and Sureth-Sloane, Caren}}, title = {{{Can the CCCTB Alleviate Tax Discrimination against Loss-Making European Multinational Groups?}}}, volume = {{165}}, year = {{2014}}, } @misc{4760, author = {{Sureth-Sloane, Caren}}, booktitle = {{Frankfurter Allgemeine Zeitung}}, pages = {{16}}, title = {{{Der Wandel wird zur Daueraufgabe}}}, volume = {{202}}, year = {{2014}}, } @article{4782, author = {{Grytz, Raphael and Krohn-Grimberghe, Artus}}, issn = {{1862-5789}}, journal = {{BI-Spektrum}}, pages = {{41 -- 44}}, title = {{{Business Intelligence bekommt einen Preis}}}, volume = {{2}}, year = {{2014}}, } @article{479, abstract = {{Identity-based cryptography has attracted attention in the cryptographic research community in recent years. Despite the importance of cryptographic schemes for applications in business and law, the legal implications of identity-based cryptography have not yet been 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 on Electronic Signatures into account. In contrast to previous assumptions, identity-based signature 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 identity-based signature schemes.}}, author = {{Sorge, Christoph}}, journal = {{Computer Law & Security Review}}, number = {{2}}, pages = {{126--136}}, publisher = {{Elsevier}}, title = {{{The Legal Classification of Identity-Based Signatures}}}, doi = {{10.1016/j.clsr.2014.01.002}}, volume = {{30}}, year = {{2014}}, } @article{4824, author = {{Wecker, T. and Hörich, F. and Feneberg, M. and Goldhahn, R. and Reuter, Dirk and As, Donat Josef}}, issn = {{0370-1972}}, journal = {{physica status solidi (b)}}, number = {{5}}, pages = {{873--878}}, publisher = {{Wiley}}, title = {{{Structural and optical properties of MBE-grown asymmetric cubic GaN/AlxGa1-xN double quantum wells}}}, doi = {{10.1002/pssb.201451531}}, volume = {{252}}, year = {{2014}}, } @article{4850, author = {{Eggert, Andreas and Hogreve, Jens and Ulaga, Wolfgang and Muenkhoff, Eva}}, journal = {{Journal of Service Research}}, number = {{1}}, pages = {{23----39}}, title = {{{Revenue and profit implications of industrial service strategies}}}, year = {{2014}}, } @article{4872, author = {{Djawadi, Behnud Mir and Fahr, Rene and Turk, Florian}}, journal = {{Value in Health}}, number = {{8}}, pages = {{814--822}}, title = {{{"Conceptual Model and Economic Experiments to Explain Nonpersistence and Enable Mechanism Designs Fosterin Behavioral Change"}}}, volume = {{17 }}, year = {{2014}}, } @techreport{4922, author = {{Janssen, Elmar and Fahr, Rene}}, title = {{{The Wage Effects of Social Norms-Evidence of Deviations from Peers' Body Mass in Europe}}}, year = {{2014}}, } @article{4970, author = {{Thommes, Kirsten and Faure, Michael and Heine, Klaus}}, journal = {{Colum. J. Eur. L.}}, pages = {{47}}, title = {{{The internal market and the consumer: what consumers actually choose}}}, year = {{2014}}, } @article{4971, author = {{Thommes, Kirsten and Akkerman, Agnes and Torenvlied, Ren{\'e} and Born, Marieke}}, journal = {{Industrial relations journal}}, number = {{4}}, pages = {{348----367}}, title = {{{The dark side of solidarity: social norms and social relations in the aftermath of strikes}}}, year = {{2014}}, } @book{6981, editor = {{Kremer, H.-Hugo and Tramm, T. and Wilbers, K.}}, title = {{{Kaufmännische Bildung? Sondierungen zu einer vernachlässigten Sinndimension}}}, year = {{2014}}, }