@inproceedings{15986, author = {{Gorny, B. and Hankeln, Frederik and Lauter, Christian and Schmidt, H. C. and Damerow, U. and Mahnken, Rolf and Maier, H. J. and Tröster, Thomas and Homberg, Werner}}, location = {{Turin, Italy}}, title = {{{Simulation and manufacturing of deep drawn parts reinforced by carbon fibre prepregs}}}, year = {{2012}}, } @inproceedings{567, abstract = {{Heterogeneous machines are gaining momentum in the High Performance Computing field, due to the theoretical speedups and power consumption. In practice, while some applications meet the performance expectations, heterogeneous architectures still require a tremendous effort from the application developers. This work presents a code generation method to port codes into heterogeneous platforms, based on transformations of the control flow into function calls. The results show that the cost of the function-call mechanism is affordable for the tested HPC kernels. The complete toolchain, based on the LLVM compiler infrastructure, is fully automated once the sequential specification is provided.}}, author = {{Barrio, Pablo and Carreras, Carlos and Sierra, Roberto and Kenter, Tobias and Plessl, Christian}}, booktitle = {{Proceedings of the International Conference on High Performance Computing and Simulation (HPCS)}}, pages = {{559--565}}, publisher = {{IEEE}}, title = {{{Turning control flow graphs into function calls: Code generation for heterogeneous architectures}}}, doi = {{10.1109/HPCSim.2012.6266973}}, year = {{2012}}, } @article{62788, abstract = {{AbstractWe present a novel approach for the simulation of solid to solid phase‐transformations in polycrystalline materials. To facilitate the utilization of a non‐affine micro‐sphere formulation with volumetric‐deviatoric split, we introduce Helmholtz free energy functions depending on volumetric and deviatoric strain measures for the underlying scalar‐valued phase‐transformation model. As an extension of affine micro‐sphere models [5], the non‐affine micro‐sphere formulation with volumetric‐deviatoric split allows to capture different Young's moduli and Poisson's ratios on the macro‐scale [1]. As a consequence, the temperature‐dependent free energy assigned to each individual phase takes the form of an elliptic paraboloid in volumetric‐deviatoric strain space, where the energy landscape of the overall material is obtained from the contributions of the individual constituents. For the evolution of volume fractions, we use an approach based on statistical physics–taking into account actual Gibbs energy barriers and transformation probabilities [2]. The computation of individual energy barriers between the phases considered is enabled by numerical minimization of parametric intersection curves of elliptic Gibbs energy paraboloids. (© 2012 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)}}, author = {{Ostwald, Richard and Bartel, Thorsten and Menzel, Andreas}}, issn = {{1617-7061}}, journal = {{PAMM}}, number = {{1}}, pages = {{277--278}}, publisher = {{Wiley}}, title = {{{Simulation of phase‐transformations based on numerical minimization of intersecting Gibbs energy potentials}}}, doi = {{10.1002/pamm.201210129}}, volume = {{12}}, year = {{2012}}, } @article{4136, abstract = {{Results of atomistic simulations aimed at understanding precipitation of the highly attractive wide band gap semiconductor material silicon carbide in silicon are presented. The study involves a systematic investigation of intrinsic and carbon-related defects as well as defect combinations and defect migration by both, quantummechanical first-principles as well as empirical potential methods. Comparing formation and activation energies, ground-state structures of defects and defect combinations as well as energetically favorable agglomeration of defects are predicted. Moreover, accurate ab initio calculations unveil limitations of the analytical method based on a Tersoff-like bond order potential. A work-around is proposed in order to subsequently apply the highly efficient technique on large structures not accessible by first-principles methods. The outcome of both types of simulation provides a basic microscopic understanding of defect formation and structural evolution particularly at non-equilibrium conditions strongly deviated from the ground state as commonly found in SiC growth processes. A possible precipitation mechanism, which conforms well to experimental findings and clarifies contradictory views present in the literature is outlined.}}, author = {{Zirkelbach, F. and Stritzker, B. and Nordlund, K. and Schmidt, Wolf Gero and Rauls, E. and Lindner, Jörg K. N.}}, issn = {{1862-6351}}, journal = {{physica status solidi (c)}}, number = {{10-11}}, pages = {{1968--1973}}, publisher = {{Wiley}}, title = {{{First-principles and empirical potential simulation study of intrinsic and carbon-related defects in silicon}}}, doi = {{10.1002/pssc.201200198}}, volume = {{9}}, year = {{2012}}, } @article{52225, author = {{Schäfer, Mirko and Wagner, Johannes and Schlüter, Alexander and Hesselbach, Jens}}, issn = {{2305-9974}}, journal = {{SNE Simulation Notes Europe}}, number = {{1}}, pages = {{1--6}}, publisher = {{ARGESIM Arbeitsgemeinschaft Simulation News}}, title = {{{Energy Flows in Industrial Buildings and Machines using the Example of a Node Model}}}, doi = {{10.11128/sne.22.tn.10103}}, volume = {{22}}, year = {{2012}}, } @inbook{52419, author = {{Schlüter, Alexander and Schäfer, Mirko}}, booktitle = {{Energie- und klimaeffiziente Produktion: Grundlagen, Leitlinien und Praxisbeispiele}}, editor = {{Hesselbach, Jens}}, isbn = {{978-3-8348-0448-8}}, pages = {{101--102}}, publisher = {{Springer Vieweg}}, title = {{{Von der Modellbildung zur Simulation: Die Vorgehensweise}}}, year = {{2012}}, } @inproceedings{60458, abstract = {{Digital 3D models are key components in many industrial and scientific sectors. In numerous domains polygonmeshes have become a de facto standard for model representation. In practice meshes often have a number ofdefects and flaws that make them incompatible with quality requirements of specific applications. Hence, repairingsuch defects in order to achieve compatibility is a highly important task - in academic as well as industrial applications. In this tutorial we first systematically analyze typical application contexts together with their requirementsand issues, as well as the various types of defects that typically play a role. Subsequently, we considerexisting techniques to process, repair, and improve the structure, geometry, and topology of imperfect meshes,aiming at making them appropriate to case-by-case requirements. We present seminal works and key algorithms,discuss extensions and improvements, and analyze the respective advantages and disadvantages depending onthe application context. Furthermore, we outline directions where further research is particularly important orpromising.}}, author = {{Campen, Marcel and Attene, Marco and Kobbelt, Leif}}, booktitle = {{Eurographics 2012 Tutorials}}, title = {{{A Practical Guide to Polygon Mesh Repairing}}}, doi = {{10.2312/CONF/EG2012/TUTORIALS/T4}}, year = {{2012}}, } @article{52868, author = {{Grimme, Britta and Lipinski, John and Schöner, Gregor}}, journal = {{Experimental brain research}}, pages = {{185–200}}, publisher = {{Springer}}, title = {{{Naturalistic arm movements during obstacle avoidance in 3D and the identification of movement primitives}}}, volume = {{222}}, year = {{2012}}, } @inproceedings{25421, author = {{Ngonga Ngomo, Axel-Cyrille and Auer, Sören}}, booktitle = {{{IJCAI} 2011, Proceedings of the 22nd International Joint Conference on Artificial Intelligence, Barcelona, Catalonia, Spain, July 16-22, 2011}}, editor = {{Walsh, Toby}}, pages = {{2312--2317}}, publisher = {{{IJCAI/AAAI}}}, title = {{{LIMES - A Time-Efficient Approach for Large-Scale Link Discovery on the Web of Data}}}, doi = {{10.5591/978-1-57735-516-8/IJCAI11-385}}, year = {{2011}}, } @inproceedings{25427, author = {{Shekarpour, Saeedeh and Auer, Sören and Ngonga Ngomo, Axel-Cyrille and Gerber, Daniel and Hellmann, Sebastian and Stadler, Claus}}, booktitle = {{Proceedings of the 2011 {IEEE/WIC/ACM} International Conference on Web Intelligence, {WI} 2011, Campus Scientifique de la Doua, Lyon, France, August 22-27, 2011}}, editor = {{Boissier, Olivier and Benatallah, Boualem and P. Papazoglou, Mike and W. Ras, Zbigniew and Hacid, Mohand-Said}}, pages = {{203--210}}, publisher = {{{IEEE} Computer Society}}, title = {{{Keyword-Driven SPARQL Query Generation Leveraging Background Knowledge}}}, doi = {{10.1109/WI-IAT.2011.70}}, year = {{2011}}, } @inproceedings{1972, abstract = {{We present a multi-agent system on top of the IaaS layer consisting of a scheduler agent and multiple worker agents. Each job is controlled by an autonomous worker agent, which is equipped with application specific knowledge (e.g., performance functions) allowing it to estimate the type and number of necessary resources. During runtime, the worker agent monitors the job and adapts its resources to ensure the specified quality of service - even in noisy clouds where the job instances are influenced by other jobs. All worker agents interact with the scheduler agent, which takes care of limited resources and does a cost-aware scheduling by assigning jobs to times with low energy costs. The whole architecture is self-optimizing and able to use public or private clouds.}}, author = {{Niehörster, Oliver and Keller, Axel and Brinkmann, André}}, booktitle = {{Proc. Int. Meeting of the IEEE Int. Symp. on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS)}}, title = {{{An Energy-Aware SaaS Stack}}}, doi = {{10.1109/MASCOTS.2011.52}}, year = {{2011}}, } @inbook{20196, author = {{Hamann, Heiko and Schmickl, Thomas and Crailsheim, Karl}}, booktitle = {{Advances in Artificial Life, ECAL 2011: Proceedings of the 11th European Conference on the Synthesis and Simulation of Living Systems}}, editor = {{Lenaerts, Tom and Giacobini, Mario and Bersini, Hugues and Bourgine, Paul and Dorigo, Marco and Doursat, Rene}}, pages = {{302----309}}, publisher = {{MIT Press}}, title = {{{Explaining Emergent Behavior in a Swarm System Based on an Inversion of the Fluctuation Theorem}}}, year = {{2011}}, } @inproceedings{26660, abstract = {{During rescue scenarios it is indispensable to obtain an overview of the situation. Unmanned aerial vehicles (UAVs) can gather the necessary information in a fast and efficient way. This paper presents an approach for path planning in 3D environments offering a solution to explore disaster areas including, e.g., partially or completely destroyed buildings. Using multiple UAVs decreases the time needed to receive a complete overview if the problem of coordination and task allocation is solved. We present an approach for the use of multiple UAVs. The UAVs work in a distributed manner without any central coordination instance and cover the exploration of terrains as well as goal-oriented path planning. When using multiple UAVs redundant exploration is avoided through the use of inter-UAV-communication. The approach is based on potential fields and uses the simplicity of the gradient method to calculate paths for fast exploration of the terrain. }}, author = {{Rasche, Christoph and Stern, Claudius and Kleinjohann, Lisa and Kleinjohann, Bernd}}, booktitle = {{The 5th International Conference on Automation, Robotics and Applications (ICARA 2011)}}, title = {{{A Distributed Multi-UAV Path Planning Approach for 3D Environments}}}, year = {{2011}}, } @inproceedings{26698, author = {{Xie, Tao and Müller, Wolfgang}}, booktitle = {{Proceedings of the 14th Euromicro Conference on Digital System Design (DSD)}}, title = {{{HDL-Mutation Based Simulation Data Generation by Propagation Guided Search}}}, year = {{2011}}, } @inproceedings{26702, author = {{Thuy, Andreas}}, booktitle = {{Reconfigurable Communication-centric Systems-on-Chip (ReCoSoC), 2011 6th International Workshop on }}, publisher = {{IEEE Xplore}}, title = {{{ Comparison of periodic and aperiodic task models for cyber-physical-systems}}}, 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}}, } @article{27010, author = {{Diethelm, Katharina and Remer, Thomas and Jilani, Hannah and Kunz, Clemens and Buyken, Anette}}, issn = {{0261-5614}}, journal = {{Clinical Nutrition}}, pages = {{640--646}}, title = {{{Associations between the macronutrient composition of the evening meal and average daily sleep duration in early childhood}}}, doi = {{10.1016/j.clnu.2011.05.004}}, year = {{2011}}, } @article{27011, abstract = {{There are no published data regarding the overall dietary glycaemic index (GI) and glycaemic load (GL) of Australian children and adolescents. We therefore aim to describe the dietary GI and GL of participants of the 2007 Australian National Children's Nutrition and Physical Activity Survey (2007ANCNPAS), and to identify the main foods contributing to their GL. Children, aged 2–16 years, who provided two 24 h recalls in the 2007ANCNPAS were included. A final dataset of 4184 participants was analysed. GI of each food item was assigned using a previously published method. GL was calculated, and food groups contributing to the GL were described by age group and sex. The weighted mean dietary GI and GL of the participants were 54 (sd 5) and 136 (sd 44), respectively. Among the nutrients examined, Ca had the highest inverse relationship with GI (P < 0·001), while percentage energy from starch was most positively associated with GI. The association between fibre density and GI was modest, and percentage energy from sugar had an inverse relationship with GI. Daily dietary GL contributed by energy-dense and/or nutrient-poor (EDNP) items in subjects aged 14–16 years was more than doubled that of subjects aged 2–3 years. To conclude, Australian children and adolescents were having a high-GI dietary pattern characterised by high-starchy food intake and low Ca intake. A significant proportion of their dietary GL was from EDNP foods. Efforts to reduce dietary GI and GL in children and adolescents should focus on energy-dense starchy foods.}}, author = {{Chun Yu Louie, Jimmy and Buyken, Anette and Heyer, Kristina and Flood, Victoria M.}}, issn = {{0007-1145}}, journal = {{British Journal of Nutrition}}, pages = {{1273--1282}}, title = {{{Dietary glycaemic index and glycaemic load among Australian children and adolescents}}}, doi = {{10.1017/s0007114511001577}}, year = {{2011}}, } @article{27068, abstract = {{AbstractObjectiveHighly processed foods such as convenience foods usually have a high salt content and therefore might indirectly act as adipogenic due to an increasing consumption of sugar-containing beverages (SCB). We examined the association between dietary salt and body weight status.DesignWe used data on urinary Na excretion as an indicator of dietary salt and BMI standard deviation score (BMI-SDS) and percentage body fat (%BF) of children and adolescents participating in the DONALD (Dortmund Nutritional and Anthropometric Longitudinally Designed) Study.SettingDortmund, Germany.SubjectsChildren and adolescents (n 364) who had at least two 24 h urine samples and two dietary records in the observational period between 2003 and 2009 were considered in our data analysis.ResultsRepeated-measures regression models revealed that urinary Na was positively associated with BMI-SDS (+0·202 SDS/g Na excretion at baseline; P < 0·001) and %BF (+1·303 %BF/g Na excretion at baseline; P < 0·01) at baseline in boys and girls. These associations remained significant after adjustment for SCB consumption and total energy intake. Furthermore, there was a positive trend between baseline Na excretion and the individual change in %BF in the study period (+0·364 increase in %BF/g Na excretion at baseline), which was confirmed after inclusion of SCB consumption or total energy intake. There was no significant association between the change in Na excretion and the concurrent change of either BMI-SDS or %BF in any model.ConclusionsOur results suggest that a high intake of processed salty foods could have a negative impact on body weight status in children and adolescents independently from their consumption of SCB.}}, author = {{Libuda, Lars and Kersting, Mathilde and Alexy, Ute}}, issn = {{1368-9800}}, journal = {{Public Health Nutrition}}, pages = {{433--441}}, title = {{{Consumption of dietary salt measured by urinary sodium excretion and its association with body weight status in healthy children and adolescents}}}, doi = {{10.1017/s1368980011002138}}, year = {{2011}}, }