@inproceedings{26787, author = {{Khaluf, Lial and Gerth, Christian and Engels, Gregor}}, booktitle = {{Proceedings of the 23rd international conference on Advanced information systems engineering (CAiSE'11)}}, pages = {{521--535}}, publisher = {{Springer Verlag}}, title = {{{Pattern-Based Modeling and Formalizing of Business Process Quality Constraints}}}, year = {{2011}}, } @inproceedings{26789, abstract = {{Mutation analysis is a powerful tool for white-box testing of the verification environment in order to produce dependable and higher quality software products. However, due to high computational costs and the focus on high-level software languages such as Java mutation analysis is not yet widely used in commercial design flows targeting embedded (software) systems. Here the industry is modeling both hardware and related software parts at higher levels of abstraction, called virtual prototypes, to accelerate parallel development and shorten time-to-market. In this paper we propose a mutation testing verification flow for SystemC based virtual prototypes that may not rely on source code only but on annotated basic blocks and enables mutant creation at assembler level to heavily reduce execution costs and equivalence mutants likelihood.}}, author = {{Kuznik, Christoph and Müller, Wolfgang}}, booktitle = {{Proceedings of the 17th IEEE Pacific Rim International Symposium on Dependable Computing}}, title = {{{Native binary mutation analysis for embedded software and virtual prototypes in SystemC}}}, year = {{2011}}, } @inbook{26792, author = {{Esau, Natascha and Kleinjohann, Lisa}}, booktitle = {{Emotional Engineering}}, pages = {{119--142}}, publisher = {{Springer-Verlag London}}, title = {{{Emotional Robot Competence and Its Use in Robot Behavior Control}}}, year = {{2011}}, } @inproceedings{26794, abstract = {{In this paper we introduce an infrastructure for investigating Organic Computing principles such as self-optimization and self-organization in real-world scenarios based on a heterogeneous society of robots. This infrastructure, the R3PB-Workbench (Remote Real Robots at the University of Paderborn), provides a controlled environment for conducting real-world multi robot experiments, while relieving the developer from common problems like getting a global view of the entire environment and self-localization within this environment. In addition, it provides a communication layer that hides the heterogeneity of the controlled robot types and also facilitates access to each robot's subjective view. Currently we provide three types of mobile robots with different size and capabilities. Since the workbench is easily customizable, it supports the integration of additional types of robots. Hence, the degree of heterogeneity of the robot group conducting the experiments in the scope of our real-world scenario can be modified as needed. Furthermore, we elaborated a multi-robot game as an illustrative real-world scenario, which on the one hand allows for sophisticated scientific investigations and on the other hand is also appealing for an audience, even with little technical background.}}, author = {{Jungmann, Alexander and Lutterbeck, Jan and Werdehausen, Benjamin and Kleinjohann, Bernd and Kleinjohann, Lisa}}, booktitle = {{Proceedings of the 2011 workshop on Organic computing}}, pages = {{41--50}}, publisher = {{ACM}}, title = {{{Towards a Real-World Scenario for Investigating Organic Computing Principles in Heterogeneous Societies of Robots}}}, year = {{2011}}, } @inbook{26805, abstract = {{In this article we present an approach that enables robots to learn how to act and react robustly in continuous and noisy environments while not loosing track of the overall feasibility, i.e. minimising the execution time in order to keep up continuous learning. We do so by combining reinforcement learning mechanisms with techniques belonging to the field of multivariate statistics on three different levels of abstraction: the motivation layer and the two simultaneously learning strategy and skill layers. The motivation layer allows for modelling occasionally contradicting goals in terms of drives in a very intuitive fashion. A drive represents one single goal, that a robot wants to be satisfied, like charging its battery, when it is nearly exhausted, or transporting an object to a target position. The strategy layer encapsulates the main reinforcement learning algorithm based on an abstracted and dynamically adjusted Markovian state space. By means of state abstraction, we minimise the overall state space size in order to ensure feasibility of the learning process in a dynamically changing environment. The skill layer finally realises a generalised learning method for learning reactive low-level behaviours, that enable a robot to interact with the environment.}}, author = {{Jungmann, Alexander and Kleinjohann, Bernd and Richert, Willi}}, booktitle = {{Organic Computing — A Paradigm Shift for Complex Systems, Autonomic Systems}}, pages = {{545--558}}, publisher = {{Springer Basel}}, title = {{{A Fast Hierarchical Learning Approach for Autonomous Robots}}}, doi = {{10.1007/978-3-0348-0130-0_36}}, year = {{2011}}, } @inbook{26810, abstract = {{The paradigm of imitation provides a powerful means for increasing the overall learning speed in a group of robots. While separately exploring the environment in order to learn how to behave with respect to a pre-defined goal, a robot gathers experience based on its own actions and interactions with the surroundings, respectively. By accumulating additional experience via observing the behaviour of other robots, the learning process can be significantly improved in terms of speed and quality. Within this article we present an approach, that enables robots in a multi-robot society to imitate any other available robot without imposing unnecessary restrictions regarding the robots’ design. Therefore, it benefits not only from its own actions, but also from actions that an observed robot performs. In order to realise the imitation paradigm, we solve three main challenges, namely enabling a robot to decide whom and when to imitate, to interpret and thereby understand the behaviour of an observed robot, and to integrate the experience gathered by observation into its individual learning process.}}, author = {{Jungmann, Alexander and Kleinjohann, Bernd and Richert, Willi}}, booktitle = {{Organic Computing — A Paradigm Shift for Complex Systems, Autonomic Systems, Band 1 }}, pages = {{295--307}}, publisher = {{Springer Basel}}, title = {{{Increasing Learning Speed by Imitation in Multi-robot Societies}}}, doi = {{10.1007/978-3-0348-0130-0_19}}, year = {{2011}}, } @article{26904, author = {{Herbst, Antje and Diethelm, Katharina and Cheng, Guo and Alexy, Ute and Icks, Andrea and Buyken, Anette}}, issn = {{0022-3166}}, journal = {{The Journal of Nutrition}}, pages = {{1348--1354}}, title = {{{Direction of Associations between Added Sugar Intake in Early Childhood and Body Mass Index at Age 7 Years May Depend on Intake Levels}}}, doi = {{10.3945/jn.110.137000}}, year = {{2011}}, } @article{26906, abstract = {{AbstractObjectiveNutrition-related health problems such as obesity are frequent among children and adolescents of Turkish descent living in Germany, yet data on their dietary habits are scarce. One reason might be the lack of validated assessment tools for this target group. We therefore aimed to validate protein and K intakes from one 24 h recall against levels estimated from one 24 h urine sample in children and adolescents of Turkish descent living in Germany.DesignCross-sectional analyses comprised estimation of mean differences, Pearson correlation coefficients, cross-classifications and Bland–Altman plots to assess the agreement between the nutritional intake estimated from a single 24 h recall and a single 24 h urine sample collected on the previous day.SettingDortmund, Germany.SubjectsData from forty-three study participants (aged 5–18 years; 26 % overweight) with a traditional Turkish background were included.ResultsThe 24 h recall significantly overestimated mean protein and K intake by 10·7 g/d (95 % CI of mean difference: 0·6, 20·7 g/d) and 344 mg/d (95 % CI 8, 680 mg/d), respectively. Correlations between intake estimates were r = 0·25 (P = 0·1) and 0·31 (P = 0·05). Both methods classified 70 % and 69 % of the participants into the same/adjacent quartile of protein and K intake and misclassified 7 % and 7 %, respectively, into the opposite quartile. Bland–Altman plots indicated a wide scattering of differences in both protein and K intake.ConclusionsAmong children and adolescents of traditional Turkish descent living in Germany, one 24 h recall may only be valid for categorizing subjects into high, medium or low consumers.}}, author = {{Bokhof, Beate and Buyken, Anette and Doğan, Canan and Karaboğa, Arzu and Kaiser, Josa and Sonntag, Antje and Kroke, Anja}}, issn = {{1368-9800}}, journal = {{Public Health Nutrition}}, pages = {{640--647}}, title = {{{Validation of protein and potassium intakes assessed from 24 h recalls against levels estimated from 24 h urine samples in children and adolescents of Turkish descent living in Germany: results from the EVET! Study}}}, doi = {{10.1017/s1368980011002734}}, year = {{2011}}, } @phdthesis{26976, author = {{Mracek, Boris}}, publisher = {{Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn; Band 297}}, title = {{{Untersuchung des dynamischen Verhaltens gekoppelter piezoelektrischer Ultraschallmotoren mit Stoßkontakt}}}, volume = {{Band 297}}, year = {{2011}}, } @inbook{3290, author = {{Gries, Thomas}}, booktitle = {{Zukunftsfähige Wirtschaftspolitik für Deutschland und Europa}}, editor = {{Welfens, Paul J.J.}}, isbn = {{978-3-642-17606-7}}, pages = {{215 -- 246}}, publisher = {{Springer}}, title = {{{Internationale Umweltpolitik bei akkumulierender und asymmetrischer Verschmutzungsdynamik}}}, year = {{2011}}, } @article{3332, author = {{Lettmann, Theodor and Baumann, Michael and Eberling, Markus and Kemmerich, Thomas}}, isbn = {{9783642240157}}, issn = {{0302-9743}}, journal = {{Transactions on Computational Collective Intelligence V}}, pages = {{157--181}}, publisher = {{Springer Berlin Heidelberg}}, title = {{{Modeling Agents and Agent Systems}}}, doi = {{10.1007/978-3-642-24016-4_9}}, year = {{2011}}, } @inproceedings{3454, author = {{Becker, Jörg and Beverungen, Daniel and Breuker, Dominic}}, booktitle = {{XII European Workshop on Efficiency and Productivity Analysis (Abstract)}}, location = {{Verona, Italy}}, title = {{{Conceptualizing Service Network Productivity --- A Looped DEA Approach}}}, year = {{2011}}, } @inproceedings{3455, author = {{Becker, Jörg and Beverungen, Daniel and Breuker, Dominic and Dietrich, Hanns-Alexander and Knackstedt, Ralf and Peter Rauer, Hans}}, booktitle = {{ECIS 2011 Proceedings}}, location = {{Helsinki, Finland}}, pages = {{Paper 111}}, title = {{{How to Model Service Productivity for Data Envelopment Analysis? A Meta-Design Approach}}}, year = {{2011}}, } @inproceedings{3456, author = {{Becker, Jörg and Beverungen, Daniel and Knackstedt, Ralf and Dietrich, Hanns-Alexander and Breuker, Dominic and Peter Rauer, Hans and Sigge, Daniel}}, booktitle = {{XXI. International RESER Conference}}, location = {{Hamburg, Germany}}, pages = {{146----147}}, title = {{{Do we need new theories on service productivity? --- Status Quo and implications from contemporary research}}}, year = {{2011}}, } @inproceedings{3457, author = {{Becker, Jörg and Beverungen, Daniel and Knackstedt, Ralf and Matzner, Martin and Müller, Oliver}}, booktitle = {{Proceedings of the 44th Annual Hawaii International Conference on System Sciences}}, isbn = {{978-1-4244-9618-1}}, issn = {{1530-1605}}, location = {{Koloa, HI, USA}}, title = {{{Information Needs in Service Systems --- A Framework for Integrating Service and Manufacturing Business Processes}}}, doi = {{10.1109/HICSS.2011.243}}, year = {{2011}}, } @inproceedings{3458, author = {{Becker, Jörg and Beverungen, Daniel and Matzner, Martin and Müller, Oliver and Pöppelbuß, Jens}}, booktitle = {{International Conference on Design Science Research in Information Systems and Technology}}, editor = {{Jain, Hemant and P. Sinha, Atish and Vitharana, Padmal}}, pages = {{366----375}}, title = {{{Design Science in Service Research: A Framework-Based Review of IT Artifacts in Germany}}}, doi = {{10.1007/978-3-642-20633-7_26}}, year = {{2011}}, } @inproceedings{3459, author = {{Beverungen, Daniel}}, booktitle = {{32th International Conference on Information Systems (ICIS)}}, location = {{Shanghai, China}}, title = {{{Mapping the Emerging Field of Service Science: Insights from a Citation Network and Cocitation Network Analysis}}}, year = {{2011}}, } @inproceedings{3460, author = {{Beverungen, Daniel and Kohlborn, Thomas and Fielt, Erwin}}, booktitle = {{22nd Australasian Conference on Information Systems (ACIS)}}, location = {{Sydney, Australia}}, title = {{{The Morphology of Service Bundling Settings}}}, year = {{2011}}, } @inproceedings{3461, author = {{Beverungen, Daniel and Wittchen, Marion and Becker, Jörg}}, booktitle = {{Proceedings of the 19th European Conference on Information Systems}}, location = {{Helsinki, Finland}}, title = {{{Where are the participants? Including motivational aspects into theorizing and design in IS Research}}}, year = {{2011}}, } @inproceedings{3462, author = {{Hellingrath, Bernd and Becker, Jörg and Beverungen, Daniel and Böhle, Carsten and Räckers, Michael}}, booktitle = {{EMNet}}, location = {{Limassol, Zypern}}, title = {{{On the Coalescence of Supply Networks and Information Systems}}}, year = {{2011}}, }