@article{26917, author = {{Goletzke, Janina and Buyken, Anette and Joslowski, Gesa and Bolzenius, Katja and Remer, Thomas and Carstensen, Maren and Egert, Sarah and Nöthlings, Ute and Rathmann, Wolfgang and Roden, Michael and Herder, Christian}}, issn = {{0022-3166}}, journal = {{The Journal of Nutrition}}, pages = {{1586--1593}}, title = {{{Increased Intake of Carbohydrates from Sources with a Higher Glycemic Index and Lower Consumption of Whole Grains during Puberty Are Prospectively Associated with Higher IL-6 Concentrations in Younger Adulthood among Healthy Individuals}}}, doi = {{10.3945/jn.114.193391}}, year = {{2014}}, } @article{356, abstract = {{Decentralized algorithms are often used in the cooperative robotics field, especially by large swarm systems. We present a distributed algorithm for a problem in which a group of autonomous mobile robots must surround a given target. These robots are oblivious, i.e., they have no memory of the past. They use only local sensing and need no dedicated communication among themselves. We introduce, then solve the problem in which the group of autonomous mobile robots must surround a given target – we call it the “discrete multiorbit target surrounding problem” (DMTSP). We evaluate our solution using simulation and prove that our solution invariably ensures that robots enclose the target in finite time. }}, author = {{Blazovics, Laszlo and Lukovszki, Tamas and Forstner, Bertalan }}, journal = {{Journal of Advanced Computational Intelligence and Intelligent Informatics}}, number = {{3}}, pages = {{315----319}}, publisher = {{Fuji Technology Press Ltd.}}, title = {{{Surrounding robots -- A discrete localized solution for the intruder problem}}}, doi = {{10.20965/jaciii.2014.p0315}}, year = {{2014}}, } @phdthesis{376, abstract = {{Radio access networks (RANs) have become one of the largest energy consumers of communication technology [LLH+13] and their energy consumption is predicted to increase [FFMB11]. To reduce the energy consumption of RANs different techniques have been proposed. One of the most promising techniques is the use of a low-power sleep mode. However, a sleep mode can also reduce the performance. In this dissertation, I quantify how much energy can be conserved with a sleep mode and which negative effects it has on the performance of RANs. Additionally, I analyze how a sleep mode can be enabled more often and how the performance can be kept high. First, I quantify the effect of power-cycle durations on energy consumption and latency in an abstract queuing system. This results in a trade-off between energy consumption and latency for a single base station (BS). Second, I show that considering a network as a whole (instead of each BS individually) allows the energy consumption to be reduced even further. After these analyses, which are not specific for RANs, I study RANs for the rest of the dissertation. RANs need to both detect and execute the requests of users. Because detection and execution of requests have different requirements, I analyze them independently. I quantify how the number of active BSs can be reduced if the detection ranges of BSs are increased by cooperative transmissions. Next, I analyze how more BSs can be deactivated if the remaining active BSs cooperate to transmit data to the users. However, in addition to increasing the range, cooperative transmissions also radiate more power. This results in higher interference for other users which slows their transmissions down and, thus, increases energy consumption. Therefore, I describe how the radiated power of cooperative transmissions can be reduced if instantaneous channel knowledge is available. Because the implementation in real hardware is impractical for demonstration purposes, I show the results of a simulation that incorporates all effects I studied analytically earlier. In conclusion, I show that a sleep mode can reduce the energy consumption of RANs if applied correctly. To apply a sleep mode correctly, it is necessary to consider power-cycle durations, power profiles, and the interaction of BSs. When this knowledge is combined the energy consumption of RANs can be reduced with only a slight loss of performance. Because this results in a trade-off between energy consumption and performance, each RAN operator has to decide which trade-off is preferred.}}, author = {{Herlich, Matthias}}, publisher = {{Universität Paderborn}}, title = {{{Reducing Energy Consumption of Radio Access Networks}}}, year = {{2014}}, } @inproceedings{379, abstract = {{In the leasing variant of Set Cover presented by Anthony et al.[1], elements U arrive over time and must be covered by sets from a familyF of subsets of U. Each set can be leased for K different periods of time.Let |U| = n and |F| = m. Leasing a set S for a period k incurs a cost ckS and allows S to cover its elements for the next lk time steps. The objectiveis to minimize the total cost of the sets leased, such that elements arrivingat any time t are covered by sets which contain them and are leased duringtime t. Anthony et al. [1] gave an optimal O(log n)-approximation forthe problem in the offline setting, unless P = NP [22]. In this paper, wegive randomized algorithms for variants of Set Cover Leasing in the onlinesetting, including a generalization of Online Set Cover with Repetitionspresented by Alon et al. [2], where elements appear multiple times andmust be covered by a different set at each arrival. Our results improve theO(log2(mn)) competitive factor of Online Set Cover with Repetitions [2]to O(log d log(dn)) = O(logmlog(mn)), where d is the maximum numberof sets an element belongs to.}}, author = {{Abshoff, Sebastian and Markarian, Christine and Meyer auf der Heide, Friedhelm}}, booktitle = {{Proceedings of the 8th Annual International Conference on Combinatorial Optimization and Applications (COCOA)}}, pages = {{25--34}}, title = {{{Randomized Online Algorithms for Set Cover Leasing Problems}}}, doi = {{10.1007/978-3-319-12691-3_3}}, year = {{2014}}, } @article{27041, author = {{Stimming, Madlen and Mesch, Christina M. and Kersting, Mathilde and Libuda, Lars}}, issn = {{1436-6207}}, journal = {{European Journal of Nutrition}}, pages = {{1069--1080}}, title = {{{Fish and rapeseed oil consumption in infants and mothers: dietary habits and determinants in a nationwide sample in Germany}}}, doi = {{10.1007/s00394-014-0784-y}}, year = {{2014}}, } @article{27042, author = {{Stimming, Madlen and Mesch, Christina M. and Kersting, Mathilde and Kalhoff, Hermann and Demmelmair, Hans and Koletzko, Berthold and Schmidt, Anne and Böhm, Volker and Libuda, Lars}}, issn = {{0021-8561}}, journal = {{Journal of Agricultural and Food Chemistry}}, pages = {{10153--10161}}, title = {{{Vitamin E Content and Estimated Need in German Infant and Follow-On Formulas With and Without Long-Chain Polyunsaturated Fatty Acids (LC-PUFA) Enrichment}}}, doi = {{10.1021/jf502469b}}, year = {{2014}}, } @article{27044, author = {{Vyncke, Krishna and Huybrechts, Inge and Van Winckel, Myriam and Cuenca Garcia, Magdalena and Labayen, Idoia and Gottrand, Frederic and Widhalm, Kurt and Leclercq, Catherine and Libuda, Lars and Manios, Yannis and Sjostrom, Michael and Molnar, Denes and Moreno, Luis A. and Gonzalez-Gross, Marcela and Spinneker, André and Perez de Heredia, Fatima and Plada, Maria and De Henauw, Stefaan}}, issn = {{0024-4201}}, journal = {{Lipids}}, pages = {{881--893}}, title = {{{Dietary Lipid Intake only Partially Influences Variance in Serum Phospholipid Fatty Acid Composition in Adolescents: Impact of Other Dietary Factors}}}, doi = {{10.1007/s11745-014-3935-2}}, year = {{2014}}, } @article{27059, abstract = {{The present study aimed to investigate the relationships between macronutrient intake and serum lipid profile in adolescents from eight European cities participating in the HELENA (Healthy Lifestyle in Europe by Nutrition in Adolescence) cross-sectional study (2006–7), and to assess the role of body fat-related variables in these associations. Weight, height, waist circumference, skinfold thicknesses, total cholesterol, HDL-cholesterol (HDL-C), LDL-cholesterol, TAG, apoB and apoA1 were measured in 454 adolescents (44 % boys) aged 12·5–17·5 years. Macronutrient intake (g/4180 kJ per d (1000 kcal per d)) was assessed using two non-consecutive 24 h dietary recalls. Associations were evaluated by multi-level analysis and adjusted for sex, age, maternal education, centre, sum of four skinfolds, moderate-to-vigorous physical activity, sedentary behaviours and diet quality index for adolescents. Carbohydrate intake was inversely associated with HDL-C (β = − 0·189, P< 0·001). An inverse association was found between fat intake and TAG (β = − 0·319, P< 0·001). Associations between macronutrient intake and serum lipids varied according to adiposity levels, i.e. an inverse association between carbohydrate intake and HDL-C was only observed in those adolescents with a higher waist:height ratio. As serum lipids and excess body fat are the major markers of CVD, these findings should be considered when developing strategies to prevent the risk of CVD among adolescents.}}, author = {{Bel-Serrat, Silvia and Mouratidou, Theodora and Huybrechts, Inge and Labayen, Idoia and Cuenca-García, Magdalena and Palacios, Gonzalo and Breidenassel, Christina and Molnár, Dénes and Roccaldo, Romana and Widhalm, Kurt and Gottrand, Frederic and Kafatos, Anthony and Manios, Yannis and Vyncke, Krishna and Sjöström, Michael and Libuda, Lars and Gómez-Martínez, Sonia and Moreno, Luis A.}}, issn = {{0007-1145}}, journal = {{British Journal of Nutrition}}, pages = {{2049--2059}}, title = {{{Associations between macronutrient intake and serum lipid profile depend on body fat in European adolescents: the Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA) study}}}, doi = {{10.1017/s0007114514003183}}, year = {{2014}}, } @article{27060, author = {{Mesch, Christina M. and Stimming, Madlen and Foterek, Kristina and Hilbig, Annett and Alexy, Ute and Kersting, Mathilde and Libuda, Lars}}, issn = {{0195-6663}}, journal = {{Appetite}}, pages = {{113--119}}, title = {{{Food variety in commercial and homemade complementary meals for infants in Germany. Market survey and dietary practice}}}, doi = {{10.1016/j.appet.2014.01.074}}, year = {{2014}}, } @inproceedings{2717, author = {{Weskamp, Christoph and John, Thomas and Suhl, Leena and Kundisch, Dennis and Teetz, A. and Rose, M.}}, booktitle = {{Proceedings of the European Electric Vehicle Congress (EEVC)}}, location = {{Brussels, Belgium}}, title = {{{Towards a Simulation-based Approach for Evaluating Business Models for the Electric Vehicle Market}}}, year = {{2014}}, } @inproceedings{27337, author = {{Schöppner, Volker and Herken, T. and Reinders, F. and Westhues, K.}}, booktitle = {{Erfolgreich Compoundieren mit Pulvern und Stäuben}}, isbn = {{978-3-18-234335-6}}, location = {{Düsseldorf (Deutschland)}}, title = {{{Simulation des Compoundiervorgangs im Doppelschneckenextruder, Modellierung - Simulation - Auslegung}}}, year = {{2014}}, } @article{27768, author = {{Riedel, Christina and von Kries, Rüdiger and Buyken, Anette and Diethelm, Katharina and Keil, Thomas and Grabenhenrich, Linus and Müller, Manfred J. and Plachta-Danielzik, Sandra}}, issn = {{1932-6203}}, journal = {{PLoS ONE}}, title = {{{Overweight in Adolescence Can Be Predicted at Age 6 Years: A CART Analysis in German Cohorts}}}, doi = {{10.1371/journal.pone.0093581}}, year = {{2014}}, } @inproceedings{1140, abstract = {{Customized planning, engineering and build-up of factory plants are very complex tasks, where project management contains lots of risks and uncertainties. Existing simulation techniques could help massively to evaluate these uncertainties and achieve improved and at least more robust plans during project management, but are typically not applied in industry, especially at SMEs (small and medium-sized enterprises). This paper presents some results of the joint research project simject of the Universities of Paderborn and Kassel, which aims at the development of a demonstrator for a simulation-based and logistic-integrated project planning and scheduling. Based on the researched state-of-the-art, requirements and a planning process are derived and described, as well as a draft of the current technical infrastructure of the intended modular prototype. First plug-ins for project simulation and multi-project optimization are implemented and already show possible benefits for the project management process.}}, author = {{Gutfeld, Thomas and Jessen, Ulrich and Wenzel, Sigrid and Weber, Jens}}, booktitle = {{Proceedings of the 2014 Winter Simulation Conference}}, editor = {{Tolk, Andreas and Diallo, Saikou Y. and Ryzhov, Ilya O. and Yilmaz, Levent and Buckley, Stephen J. and Miller, John A.}}, isbn = {{9781479974863}}, location = {{Savannah, GA, USA}}, pages = {{3423--3434}}, publisher = {{IEEE Press}}, title = {{{A Technical Concept for Plant Engineering by Simulation-Based and Logistic-Integrated Project Management}}}, doi = {{10.1109/WSC.2014.7020175}}, year = {{2014}}, } @inproceedings{20981, abstract = {{Real-time embedded systems (RTES), as in the automotive domain, provide their functionality by executing software operations on hardware with restricted resources and by communicating via buses. The properties of the underlying architecture, i.e., execution times of software operations and bus latencies, cause delays during the provision of the functionality. At the same time, RTES have to fulfill strict real-time requirements. The fulfillment of such real-time requirements under consideration of delays induced by architectural properties should be taken into account already during requirements engineering (RE) to avoid costly iterations in subsequent development phases. In previous work, we developed a formal RE approach based on a recent Live Sequence Chart (LSC) variant, so-called Modal Sequence Diagrams (MSDs). This scenario-based RE approach allows to validate the requirements by means of simulation, i.e., the play-out algorithm originally conceived for LSCs. Our MSD play-out approach considers assumptions on the environment as well as real-time requirements and is applicable to hierarchical component architectures, which makes it well suited for automotive systems. However, delays induced by architectural properties are not considered. In order to consider this important aspect, we introduce in this paper an approach enabling the annotation of software operation execution times and connector latencies to hierarchical component architectures by means of the MARTE profile. These assumptions about the architectural properties can be verified against the real-time requirements specified in the MSDs by means of simulation. We illustrate the approach by means of an example of an automotive RTES.}}, author = {{Holtmann, Jörg and Shipchanov, Dimitar}}, booktitle = {{Proceedings of 12th Workshop Automotive Software Engineering}}, pages = {{2169–2180}}, publisher = {{Bonner Koellen Verlag}}, title = {{{Considering Architectural Properties in Real-time Play-out}}}, volume = {{P-232}}, year = {{2014}}, } @phdthesis{21503, abstract = {{Bei der Umsetzung von innovativen Leichtbaukonzepten finden verstärkt mechanische Fügeverfahren Anwendung. Folglich werden im Automobilbau, neben den konventionellen Fügeverfahren wie dem Widerstandspunktschweißen, mechanische Verbindungstechniken, wie z.B. das Halbhohlstanznieten eingesetzt.Für den effektiven Einsatz dieser Fügetechniken insbesondere in crashrelevanten Bereichen fehlen jedoch bislang Verbindungskennwerte, die eine Vorhersage über das Tragverhalten dieser Verbindungen ermöglichen. Das Ziel dieser Arbeit war es, das Tragverhalten von Halbhohlstanznietverbindungen für den Lastfall Crash zu charakterisieren und eine Methode aufzuzeigen, mit deren Hilfe es möglich ist, das experimentell ermittelte Verhalten rechnerisch abzuschätzen. Diese Arbeit beinhaltet, neben der experimentellen Ermittlung von Werkstoffkennwerten, die Ergebnisse zur Charakterisierung der Tragfähigkeit von Halbhohlstanznietverbindungen unter Crashbelastung. Dabei wird neben der einfach überlappten Zugscher- und Schälzugprobe das patentierte LWF-KS-2-Prüfkonzept eingesetzt, welches Tragfähigkeitsuntersuchungen unter Berücksichtigung der Lasteinleitungsrichtung und der Belastungsgeschwindigkeit erlaubt. Als Versuchswerkstoffe kamen dabei der mikrolegierte Stahlwerkstoff HC340LA,der Bake-Hardening-Stahl HC180BD, der Dualphasenstahl HCT600X sowie die Aluminiumlegierungen EN AW-6014 und EN AW-6060 zum Einsatz. Die experimentell ermittelten Verbindungskennwerte dienten unmittelbar als Eingangsdaten für die rechnergestützte Vorhersage des Trag- und Versagensverhaltens von Halbhohlstanznietverbindungen. Aufbauend darauf wurde in der vorliegenden Arbeit eine Methodik zur Entwicklung und Optimierung eines numerischen Ersatzmodells für Halbhohlstanznietverbindungen unter Crashbelastung dargestellt. }}, author = {{Hein, David}}, isbn = {{978-3-8440-3093-8}}, keywords = {{Halbhohlstanznietverbindungen, Crash, Crashbelastung}}, publisher = {{Shaker Verlag GmbH}}, title = {{{Beitrag zur Kennwertermittlung für die numerische Simulation des Tragverhaltens von Halbhohlstanznietverbindungen unter Crashbelastung}}}, volume = {{Band 107}}, year = {{2014}}, } @inproceedings{17659, author = {{Polevoy, Gleb and Trajanovski, Stojan and de Weerdt, Mathijs M.}}, booktitle = {{Proceedings of the 2014 International Conference on Autonomous Agents and Multi-agent Systems}}, isbn = {{978-1-4503-2738-1}}, keywords = {{competition, equilibrium, market, models, shared effort games, simulation}}, pages = {{861--868}}, publisher = {{International Foundation for Autonomous Agents and Multiagent Systems}}, title = {{{Nash Equilibria in Shared Effort Games}}}, year = {{2014}}, } @inproceedings{17661, author = {{King, Thomas C. and Liu, Qingzhi and Polevoy, Gleb and de Weerdt, Mathijs and Dignum, Virginia and van Riemsdijk, M. Birna and Warnier, Martijn}}, booktitle = {{Proceedings of the 2014 International Conference on Autonomous Agents and Multi-agent Systems}}, isbn = {{978-1-4503-2738-1}}, keywords = {{crowd-sensing, crowdsourcing, data aggregation, game theory, norms, reciprocation, self interested agents, simulation}}, pages = {{1651--1652}}, publisher = {{International Foundation for Autonomous Agents and Multiagent Systems}}, title = {{{Request Driven Social Sensing}}}, year = {{2014}}, } @inproceedings{1781, abstract = {{In light of an increasing awareness of environmental challenges, extensive research is underway to develop new light-weight materials. A problem arising with these materials is their increased response to vibration. This can be solved using a new composite material that contains embedded hollow spheres that are partially filled with particles. Progress on the adaptation of molecular dynamics towards a particle-based numerical simulation of this material is reported. This includes the treatment of specific boundary conditions and the adaption of the force computation. First results are presented that showcase the damping properties of such particle-filled spheres in a bouncing experiment.}}, author = {{Steinle, Tobias and Vrabec, Jadran and Walther, Andrea}}, booktitle = {{Proc. Modeling, Simulation and Optimization of Complex Processes (HPSC)}}, editor = {{Bock, Hans Georg and Hoang, Xuan Phu and Rannacher, Rolf and Schlöder, Johannes P.}}, isbn = {{978-3-319-09063-4}}, pages = {{233--243}}, publisher = {{Springer International Publishing}}, title = {{{Numerical Simulation of the Damping Behavior of Particle-Filled Hollow Spheres}}}, doi = {{10.1007/978-3-319-09063-4_19}}, year = {{2014}}, } @inproceedings{23667, author = {{Abdelgawad, Kareem and Hassan, Bassem and Grafe, Michael and Gräßler, Iris}}, booktitle = {{SIMUL2014 (IARIA), 6th International Conference on Advances in System Simulation (SIMUL 2014)}}, publisher = {{International Academy, Research, and Industry Association (IARIA)}}, title = {{{A Scalable Framework for Advanced Driver Assistance Systems Simulation}}}, year = {{2014}}, } @inproceedings{23682, abstract = {{Current production control systems cannot react appropriately to unknown situations (e.g. the dispatch of rush jobs). They are only able to react on known situations with a predefined behaviour. In this paper the paradigm of self-optimisation will be transferred to the production control level by using a procedure model to design a self-optimising production control system. The production control is then able to react autonomously on changing operational conditions and to deduce new reaction strategies for occurring faults or disturbances. A rule based decision model is the core of the conceptual design. It is based on known and possible future faults and deducts reaction strategies. Simultaneously to them, a simulation model will be proposed, that simulates and evaluates suitable strategies.}}, author = {{Mittag, Tobias and Gausemeier, Jürgen and Gräßler, Iris and Iwanek, Peter and Köchling, Daniel and Petersen, Marcus}}, booktitle = {{Disruptive Innovation in Manufacturing Engineering towards the 4th Industrial Revolution: mit CD-ROM - Proceedings of the 8th International CIRP Conference on Digital Enterprise Technology - DET 2014, International CIRP Conference on Digital Enterprise Technology (DET), Nr. 8}}, isbn = {{978-3-839606-97-1}}, publisher = {{Fraunhofer-Institut für Arbeitswirtschaft und Organisation (IAO), Fraunhofer Verlag}}, title = {{{Conceptual Design of a Self-Optimising Production Control System}}}, volume = {{8}}, year = {{2014}}, }