@misc{28221, author = {{Gausemeier, Jürgen}}, isbn = {{978-3-942647-53-3}}, publisher = {{Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn}}, title = {{{Vorausschau und Technologieplanung. 10. Symposium für Vorausschau und Technologieplanung, Heinz Nixdorf Institut, 20. und 21. November 2014}}}, volume = {{334}}, year = {{2014}}, } @inproceedings{28294, abstract = {{n this contribution a framework for the computer-aided planning and optimisation of functional graded components is presented. The framework is divided into three modules - the "Component Description", the "Expert System" for the synthetisation of several process chains and the "Modelling and Process Chain Optimisation". The Component Description module enhances a standard computer-aided design (CAD) model by a voxel-based representation of the graded properties. The Expert System synthesises process steps stored in the knowledge base to generate several alternative process chains. Each process chain is capable of producing components according to the enhanced CAD model and usually consists of a sequence of heating-, cooling-, and forming processes. The dependencies between the component and the applied manufacturing processes as well as between the processes themselves need to be considered. The Expert System utilises an ontology for that purpose. The ontology represents all dependencies in a structured way and connects the information of the knowledge base via relations. The third module performs the evaluation of the generated process chains. To accomplish this, the parameters of each process are optimised with respect to the component specification, whereby the result of the best parameterisation is used as representative value. Finally, the process chain which is capable of manufacturing a functionally graded component in an optimal way regarding to the property distributions of the component description is presented by means of a dedicated specification technique.}}, author = {{Biermann, Dirk and Gausemeier, J{\"u}rgen and Heim, Hans-Peter and Hess, Stefan and Petersen, Marcus and Ries, Angela and Wagner, T}}, booktitle = {{Proceedings of PPS-29. The 29th International Conference of the Polymer Processing Society - Conference Papers}}, editor = {{Altst{\"a}dt, Volker}}, isbn = {{978-0-7354-1227-9}}, pages = {{762--765}}, publisher = {{American Institute of Physics (AIP)}}, title = {{{A Framework for the Computer-aided Planning and Optimisation of Manufacturing Processes for Components with Functional Graded Properties}}}, volume = {{1593}}, year = {{2014}}, } @book{28407, author = {{Amshoft, Benjamin and D{\"u}lme, Christian and Echterfeld, Julian and Gausemeier, J{\"u}rgen}}, publisher = {{Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn}}, title = {{{Gesch{\"a}ftsmodellmuster f{\"u}r disruptive Technologien}}}, year = {{2014}}, } @article{2627, author = {{Veit, D. and Clemons, E. and Buxmann, A. and Hess, T. and Kundisch, Dennis and Leimeister, J.-M. and Loos, P. and Spann, M.}}, journal = {{Wirtschaftsinformatik}}, number = {{1}}, pages = {{55--64}}, title = {{{Geschäftsmodelle - Eine Forschungsagenda für die Wirtschaftsinformatik}}}, volume = {{56}}, 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{3890, abstract = {{The incidenceofthin-film-guided, in-planeunguidedwavesatobliqueanglesonstraightdiscontinuities of dielectricslabwaveguides,anearlyproblemofintegratedoptics,isbeingre-considered.The3-D frequencydomainMaxwellequationsreducetoaparametrizedinhomogeneousvectorialproblemona 2-D computationaldomain,withtransparent-influx boundaryconditions.Weproposearigorousvec- torial solverbasedonsimultaneousexpansionsintopolarizedlocalslabeigenmodesalongthetwo orthogonal crosssectioncoordinates(quadridirectionaleigenmodepropagationQUEP).Thequasi-ana- lytical schemeisapplicabletoconfigurations with — in principle — arbitrary crosssectiongeometries. Examples forahigh-contrastfacetofanasymmetricslabwaveguide,forthelateralexcitationofa channel waveguide,andforastepdiscontinuitybetweenslabwaveguidesofdifferentthicknessesare discussed.}}, author = {{Hammer, Manfred}}, issn = {{0030-4018}}, journal = {{Optics Communications}}, keywords = {{tet_topic_waveguide, tet_topic_numerics}}, pages = {{447--456}}, publisher = {{Elsevier BV}}, title = {{{Oblique incidence of semi-guided waves on rectangular slab waveguide discontinuities: A vectorial QUEP solver}}}, doi = {{10.1016/j.optcom.2014.09.087}}, volume = {{338}}, year = {{2014}}, } @inproceedings{3171, author = {{Travkin, Oleg and Wehrheim, Heike}}, booktitle = {{Hardware and Software: Verification and Testing - 10th International Haifa Verification Conference, {HVC} 2014, Haifa, Israel, November 18-20, 2014. Proceedings}}, editor = {{Yahav, Eran}}, pages = {{132----147}}, title = {{{Handling {TSO} in Mechanized Linearizability Proofs}}}, doi = {{10.1007/978-3-319-13338-6_11}}, 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}}, } @inproceedings{2718, author = {{John, Thomas and Weskamp, Christoph and Kundisch, Dennis and Suhl, Leena and Flake, S. and Freund, D. and Jung, H.}}, booktitle = {{Proceedings of the European Electric Vehicle Congress (EEVC)}}, location = {{Brussels, Belgium}}, title = {{{The Case for Modeling Consumer Choice Through an Adapted Total Cost of Ownership Approach}}}, year = {{2014}}, } @article{20944, abstract = {{Joining metals using electrochemical support (ECUF) is a new process for cold pressure welding sheets and parts. This new process is based on an electrochemical in-line surface treatment followed by incremental pilger rolling. The ECUF process intends to cold pressure weld materials under optimized conditions. Oxide layers on metal surfaces are known to inhibit the formation of cold pressure welds. The in-line electrochemical treatment will be used to remove these surface oxides for specific engineering metals and alloys. Hence, an improved pressure weld formation at lower forces and smaller reduction ratios is expected for the electrochemically treated surfaces. Using a more flexible pressure welding process, the number of applications could be greatly improved. First tests with copper were performed to analyse the efficiency of the proposed electrochemical surface treatments. Two electrochemical treatments, the cathodic oxide-reduction and cyclovoltammetric oxide-reduction, were compared with conventional treatments (degreasing and scratch brushing) regarding their influence on the cold pressure welding process of copper. The weld strength of lap welds has been investigated as well as the necessary reduction threshold to form a weld. It was found that the electrochemical oxide reduction resulted in higher weld strength. The results of scanning electron microscopy (SEM) and energy dispersive analysis of X-rays (EDX) indicate that surface oxides were successfully removed by the electrochemical surface treatments. (C) 2014 Elsevier B.V. All rights reserved.}}, author = {{Ebbert, Christoph and Schmidt, H. C. and Rodman, D. and Nuernberger, F. and Homberg, W. and Maier, H. J. and Grundmeier, Guido}}, issn = {{0924-0136}}, journal = {{JOURNAL OF MATERIALS PROCESSING TECHNOLOGY}}, number = {{10}}, pages = {{2179--2187}}, title = {{{Joining with electrochemical support (ECUF): Cold pressure welding of copper}}}, doi = {{10.1016/j.jmatprotec.2014.04.015}}, volume = {{214}}, year = {{2014}}, } @inbook{18956, author = {{Seng, Eva- Maria}}, booktitle = {{The Challenge of the Object. Section 6, The Proceedings of the 33. International Congress in the History of Art. Nuremberg, 15.-20. July 2012. Comité International d’Histoire de l’Art, CIHA, Bd. 2}}, pages = {{430--434}}, title = {{{World Cultural Heritage: Cultural Identity and the War on Works of Art. Introduction, Sketch of Problems and Objects}}}, volume = {{2}}, year = {{2014}}, } @phdthesis{19039, author = {{Petring, Ralf}}, title = {{{Multi-Algorithmen-Rendering: Darstellung heterogener 3-D-Szenen in Echtzeit}}}, year = {{2014}}, } @inproceedings{20633, author = {{Schubert, M and Reinecke, K and Pezeshkian, A and Fergland, D and Reinsberger, C and Baumeister, Jochen}}, number = {{7+8}}, pages = {{190}}, title = {{{Das kortikale Abbild sensomotorischer Kontrollprozesse - Grundlagen zur Untersuchung zentraler Ermüdung}}}, volume = {{65}}, year = {{2014}}, } @inproceedings{20636, author = {{Jakobsmeyer, R and Fergland, D and Pezeshkian, A and Reinsberger, C and Heitkamp, CH and Baumeister, Jochen}}, number = {{7+8}}, pages = {{230}}, title = {{{Veränderte Drop Jump Performance durch ein Maximalkrafttraining auf instabilen Unterstützungsflächen}}}, volume = {{66}}, year = {{2014}}, } @inbook{18076, author = {{Kamin, A.-M. and Greiner, A.-D. and Darmann-Finck, I. and Meister, Dorothee M.}}, booktitle = {{Interdisziplinäre Zeitschrift für Technologie und Lernen. 1 (1)}}, editor = {{Back, A. and Baumgartner, P. and Reinmann, G.}}, pages = {{6 -- 20}}, title = {{{Zur Konzeption einer digital unterstützten beruflichen Fortbildung – ein interdisziplinärer Ansatz aus Medienpädagogik und Pflegedidaktik}}}, year = {{2014}}, } @inbook{18078, author = {{Meise, B. and Meister, Dorothee M. and Hoffmann, D.}}, booktitle = {{Grundbildung Medien in pädagogischen Studiengängen}}, editor = {{Imort, P. and Niesyto, H.}}, pages = {{183 -- 194}}, publisher = {{kopaed}}, title = {{{Integrative Perspektiven auf Medien und Bildung zwischen Medienpädagogik und Medienwissenschaften}}}, year = {{2014}}, } @inproceedings{22903, author = {{Kühn, Arno and Bremer, Christian and Dumitrescu, Roman and Gausemeier, Jürgen}}, booktitle = {{NordDesign 2014, Espoo, Finnland, 27. - 29. Aug. 2014}}, title = {{{Feature models supporting trade-off decisions in early mechatronic systems design}}}, year = {{2014}}, } @article{21743, author = {{Repenning, A. and C. Webb, D. and Brand, C. and Gluck, F. and Grover, R. and Miller, S. and Nickerson, H. and Song, M.}}, journal = {{IEEE Computer Graphics and Applications}}, number = {{3}}, pages = {{68--71}}, publisher = {{IEEE}}, title = {{{Beyond Minecraft: Facilitating Computational Thinking through Modeling and Programming in 3D}}}, doi = {{10.1109/MCG.2014.46}}, volume = {{34}}, year = {{2014}}, } @inproceedings{455, abstract = {{We study the existence of approximate pure Nash equilibria in weighted congestion games and develop techniques to obtain approximate potential functions that prove the existence of alpha-approximate pure Nash equilibria and the convergence of alpha-improvement steps. Specifically, we show how to obtain upper bounds for approximation factor alpha for a given class of cost functions. For example for concave cost functions the factor is at most 3/2, for quadratic cost functions it is at most 4/3, and for polynomial cost functions of maximal degree d it is at at most d + 1. For games with two players we obtain tight bounds which are as small as for example 1.054 in the case of quadratic cost functions.}}, author = {{Hansknecht, Christoph and Klimm, Max and Skopalik, Alexander}}, booktitle = {{Proceedings of the 17th. International Workshop on Approximation Algorithms for Combinatorial Optimization Problems (APPROX)}}, pages = {{242 -- 257}}, title = {{{Approximate pure Nash equilibria in weighted congestion games}}}, doi = {{10.4230/LIPIcs.APPROX-RANDOM.2014.242}}, year = {{2014}}, } @article{7224, author = {{Repp, J. and Schinner, G. J. and Schubert, E. and Rai, A. K. and Reuter, Dirk and Wieck, A. D. and Wurstbauer, U. and Kotthaus, J. P. and Holleitner, A. W.}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, number = {{24}}, publisher = {{AIP Publishing}}, title = {{{Confocal shift interferometry of coherent emission from trapped dipolar excitons}}}, doi = {{10.1063/1.4904222}}, volume = {{105}}, year = {{2014}}, }