@inproceedings{6565, author = {{Jäger, Axel and Johannesmann, Sarah and Claes, Leander and Webersen, Manuel and Henning, Bernd and Kupnik, Mario}}, booktitle = {{2017 IEEE IUS~Proceedings}}, title = {{{Evaluating the Influence of 3D-Printing Parameters on Acoustic Material Properties}}}, year = {{2017}}, } @inproceedings{6638, author = {{Krauter, Stefan}}, booktitle = {{VDE-Proceedings of NEIS 2017 – Conference on Sustainable Energy Supply and Energy Storage Systems by IEEE-PES. Hamburg (Deutschland), 21.–22. September, 2017.}}, location = {{Hamburg}}, title = {{{Comparison of Conversion Efficiencies and Energy Yields of Micro-Inverters for Photovoltaic Modules}}}, year = {{2017}}, } @inproceedings{6639, author = {{Krauter, Stefan and Ameli, Ali}}, booktitle = {{VDE-Proceedings of NEIS 2017 – Conference on Sustainable Energy Supply and Energy Storage Systems by IEEE-PES. Hamburg (Deutschland), 21.–22. September, 2017.}}, location = {{Hamburg}}, title = {{{Smart Charging Management System of Plugged-in EVs for Optimal Operation of Future Power Systems.}}}, year = {{2017}}, } @phdthesis{16070, author = {{Weiß Borkowski, Nathalie }}, isbn = {{978-3-8440-5013-4}}, publisher = {{Shaker Verlag Band 2017/22}}, title = {{{Analyse des Verformungsverhaltens von Übergangszonen partiell pressgehärteter Strukturen}}}, year = {{2017}}, } @inproceedings{16075, author = {{Ahlers, Dominik and Tröster, Thomas}}, location = {{Nördlingen}}, title = {{{Aspekte der Produktentwicklung in der additiven Fertigung}}}, year = {{2017}}, } @inproceedings{16338, abstract = {{To detect errors or find potential for improvement during the CAD-supported development of a complex technical system like modern industrial machines, the system’s virtual prototype can be examined in virtual reality (VR) in the context of virtual design reviews. Besides exploring the static shape of the examined system, observing the machines’ mechanics (e.g., motor-driven mechanisms) and transport routes for the material transport (e.g., via conveyor belts or chains, or rail-based transport systems) can play an equally important role in such a review. In practice it is often the case, that the relevant information about transport routes, or kinematic properties is either not consequently modeled in the CAD data or is lost during conversion processes. To significantly reduce the manual effort and costs for creating animations of the machines complex behavior with such limited input data for a design review, we present a set of algorithms to automatically determine geometrical properties of machine parts based only on their triangulated surfaces. The algorithms allow to detect the course of transport systems, the orientation of objects in 3d space, rotation axes of cylindrical objects and holes, the number of tooth of gears, as well as the tooth spacing of toothed racks. We implemented the algorithms in the VR system PADrend and applied them to animate virtual prototypes of real machines.}}, author = {{Brandt, Sascha and Fischer, Matthias and Gerges, Maria and Jähn, Claudius and Berssenbrügge, Jan}}, booktitle = {{Volume 1: 37th Computers and Information in Engineering Conference}}, isbn = {{9780791858110}}, location = {{Cleveland, USA}}, pages = {{91:1--91:10}}, title = {{{Automatic Derivation of Geometric Properties of Components From 3D Polygon Models}}}, doi = {{10.1115/detc2017-67528}}, volume = {{1}}, year = {{2017}}, } @inproceedings{16339, abstract = {{In der CAD-unterstützten Entwicklung von technischen Systemen (Maschinen, Anlagen etc.) werden virtuelle Prototypen im Rahmen eines virtuellen Design-Reviews mit Hilfe eines VR-Systems gesamtheitlich betrachtet, um frühzeitig Fehler und Verbesserungsbedarf zu erkennen. Ein wichtiger Untersuchungsgegenstand ist dabei die Analyse von Transportwegen für den Materialtransport mittels Fließbändern, Förderketten oder schienenbasierten Transportsystemen. Diese Transportwege werden im VR-System animiert. Problematisch dabei ist, dass derartige Transportsysteme im zugrundeliegenden CAD-Modell in der Praxis oft nicht modelliert und nur exemplarisch angedeutet werden, da diese für die Konstruktion nicht relevant sind (z.B. der Fördergurt eines Förderbandes, oder die Kette einer Förderkette), oder die Informationen über den Verlauf bei der Konvertierung der Daten in das VR-System verloren gehen. Bei der Animation dieser Transportsysteme in einem VR-System muss der Transportweg also aufwändig, manuell nachgearbeitet werden. Das Ziel dieser Arbeit ist die Reduzierung des notwendigen manuellen Nachbearbeitungsaufwandes für das Design-Review durch eine automatische Berechnung der Animationspfade entlang eines Transportsystems. Es wird ein Algorithmus vorgestellt, der es ermöglicht mit nur geringem zeitlichem Benutzeraufwand den Animationspfad aus den reinen polygonalen dreidimensionalen Daten eines Transportsystems automatisch zu rekonstruieren.}}, author = {{Brandt, Sascha and Fischer, Matthias}}, booktitle = {{Wissenschaftsforum Intelligente Technische Systeme (WInTeSys) 2017}}, location = {{Paderborn}}, pages = {{415--427}}, publisher = {{Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn}}, title = {{{Automatische Ableitung der Transportwege von Transportsystemen aus dem 3D-Polygonmodell}}}, volume = {{369}}, year = {{2017}}, } @article{22038, abstract = {{Micro Physiological Systems (MPS), also known as Multi-Organ-Chip, Organ-on-a-Chip, or Body-on-a-Chip, are advanced microfluidic systems that allow the cultivation of different types of cells and tissue in just one common circuit. Furthermore, they thus can also adjust the interaction of these different tissues. Perspectival MPS will replace animal testing. For fast and flexible manufacturing and marking of MPS, a concept for a universal micromachining platform has been developed which provides the following latest key technologies: laser micro cutting of polymer foils, laser micro- and sub-micro-structuring of polymer foils, 3D printing of polymer components as well as optical inspection and online process control. The combination of different laser sources, processing optics, inspection systems, and print heads on multiple axes allows the change and exactly positioning to the workpiece during the process. Therewith, the realization of MPS including 3D printed components as well as direct laser interference patterned surfaces for well-defined cell adhesion and product protection is possible. Additional basic technologies for the generation of periodical line-like structures at polycarbonate foils using special Direct Laser Interference Patterning (DLIP) optics as well as for the 3D printing of fluid-tight cell culture reservoirs made of Acrylonitrile Butadiene Styrene directly onto polycarbonate microfluidics were established. A first prototype of the universal micromachining platform combining different lasers with Direct Laser Writing and DLIP is shown. With this laser micro cutting as well as laser micro-structuring of polycarbonate (PC) foils and therewith functionalization for MPS application could be successfully demonstrated.}}, author = {{Moritzer, Elmar and Hirsch, André and Günther, K. and Sonntag, F. and Klotzbach, U. and Lasagni, A.F.}}, journal = {{Micromachines}}, number = {{246}}, publisher = {{MDPI}}, title = {{{Universal Micromachining Platform and Basic Technologies for the Manufacture and Marking of Microphysiological Systems}}}, doi = {{10.3390/mi8080246}}, volume = {{8}}, year = {{2017}}, } @book{31856, editor = {{Häsel-Weide, Uta and Nührenbörger, M.}}, isbn = {{978-3-941649-22-4}}, pages = {{297}}, publisher = {{Grundschulverband e. V.}}, title = {{{Gemeinsam Mathematik lernen. Mit allen Kindern rechnen.}}}, year = {{2017}}, } @inbook{33615, author = {{Rezat, Sara and Lehnen, Katrin}}, booktitle = {{Ästhetische Erfahrungen – Theoretische Konzepte und empirische Befunde zur kulturellen Bildung. (Studien zur Germanistik und Anglistik, 22)}}, editor = {{Grosser, Sabine and Köller, Katharina and Vorst, Claudia}}, pages = {{31--57}}, publisher = {{Peter Lang Verlag}}, title = {{{Ästhetisch-kulturelle Erfahrungsräume materialgestützten Schreibens}}}, year = {{2017}}, } @misc{22531, abstract = {{Die Erfindung betrifft eine Bremseinrichtung (12) für eine im unbetätigten Zustand eingefallene Bremse (10), wobei die Bremseinrichtung (12) eine Druckplatte (18), eine Gegenplatte (20), eine zum Verpressen einer Bremsscheibe (16) zwischen der Druckplatte (18) und der Gegenplatte (20) auf die Druckplatte (18) wirkende Energiespeichereinrichtung (22) sowie eine Lüftvorrichtung (26) zum Lüften der Bremse (10) aufweist, wobei diese Lüftvorrichtung (26) zum Lüften der Bremse (10) eine der Energiespeichereinrichtung (22) entgegenwirkende Aktoreinrichtung (28) aufweist. Es ist vorgesehen, dass die Lüftvorrichtung (26) weiterhin ein Getriebe (30) zur abschaltbaren Kraftübertragung der Kraft der Aktoreinrichtung (28) auf die Druckplatte (18) aufweist, wobei das Abschalten der Kraftübertragung über eine Schalteinrichtung (32) der Lüftvorrichtung (26) steuerbar ist. Die Erfindung betrifft weiterhin eine entsprechende im unbetätigten Zustand eingefallene Bremse (10).}}, author = {{Zimmer, Detmar and Schadomsky, Magnus Hubert and Kriegel, Nils-Peter and Küter, Winfried and Neumann, Christopher}}, title = {{{Bremseinrichtung für eine im unbetätigten Zustand eingefallene Bremse und entsprechende Aktoreinrichtung zum Lüften der Bremse}}}, year = {{2017}}, } @inbook{46356, abstract = {{Integrating user preferences in Evolutionary Multiobjective Optimization (EMO) is currently a prevalent research topic. There is a large variety of preference handling methods (originated from Multicriteria decision making, MCDM) and EMO methods, which have been combined in various ways. This paper proposes a Web Ontology Language (OWL) ontology to model and systematize the knowledge of preference-based multiobjective evolutionary algorithms (PMOEAs). Detailed procedure is given on how to build and use the ontology with the help of Protégé. Different use-cases, including training new learners, querying and reasoning are exemplified and show remarkable benefit for both EMO and MCDM communities.}}, author = {{Li, L and Yevseyeva, I and Basto-Fernandes, V and Trautmann, Heike and Jing, N and Emmerich, M}}, booktitle = {{Evolutionary Multi-Criterion Optimization: 9$^th$ International Conference, EMO 2017, Münster, Germany, March 19-22, 2017, Proceedings}}, editor = {{Trautmann, H and Rudolph, G and Klamroth, K and Schütze, O and Wiecek, M and Jin, Y and Grimme, C}}, isbn = {{978-3-319-54157-0}}, pages = {{406–421}}, publisher = {{Springer International Publishing}}, title = {{{Building and Using an Ontology of Preference-Based Multiobjective Evolutionary Algorithms}}}, doi = {{10.1007/978-3-319-54157-0_28}}, year = {{2017}}, } @inbook{46357, abstract = {{The liner shipping fleet repositioning problem (LSFRP) is a central optimization problem within the container shipping industry. Several approaches exist for solving this problem using exact and heuristic techniques, however all of them use a single objective function for determining an optimal solution. We propose a multi-objective approach based on a simulated annealing heuristic so that repositioning coordinators can better balance profit making with cost-savings and environmental sustainability. As the first multi-objective approach in the area of liner shipping routing, we show that giving more options to decision makers need not be costly. Indeed, our approach requires no extra runtime than a weighted objective heuristic and provides a rich set of solutions along the Pareto front.}}, author = {{Tierney, K and Handali, J and Grimme, C and Trautmann, Heike}}, booktitle = {{Evolutionary Multi-Criterion Optimization: 9$^th$ International Conference, EMO 2017, Münster, Germany, March 19-22, 2017, Proceedings}}, editor = {{Trautmann, H and Rudolph, G and Klamroth, K and Schütze, O and Wiecek, M and Jin, Y and Grimme, C}}, isbn = {{978-3-319-54157-0}}, pages = {{622–638}}, publisher = {{Springer International Publishing}}, title = {{{Multi-objective Optimization for Liner Shipping Fleet Repositioning}}}, doi = {{10.1007/978-3-319-54157-0_42}}, year = {{2017}}, } @inproceedings{47243, author = {{Fischer, Felix and Böttinger, Konstantin and Xiao, Huang and Stransky, Christian and Acar, Yasemin and Backes, Michael and Fahl, Sascha}}, booktitle = {{2017 IEEE Symposium on Security and Privacy, SP 2017, San Jose, CA, USA, May 22-26, 2017}}, pages = {{121–136}}, publisher = {{IEEE Computer Society}}, title = {{{Stack Overflow Considered Harmful? The Impact of Copy&Paste on Android Application Security}}}, doi = {{10.1109/SP.2017.31}}, year = {{2017}}, } @book{40238, author = {{Wagenknecht, Inga}}, isbn = {{978-3-8359-6566-9}}, publisher = {{VVB Laufersweiler Verlag}}, title = {{{Kosten und Nutzen Früher Hilfen. Eine lebensverlaufsbezogene Analyse}}}, year = {{2017}}, } @inbook{40202, author = {{Wagenknecht, Inga and Meier-Gräwe, Uta and Ziegenhain, Ute}}, booktitle = {{Netzwerke in Frühen Hilfen und Gesundheitsförderung}}, editor = {{Fischer, Jörg and Geene, Raimund}}, isbn = {{978-3-7799-3497-4}}, pages = {{136--157}}, publisher = {{Beltz Juventa}}, title = {{{Kosten und Nutzen Früher Hilfen}}}, year = {{2017}}, } @inproceedings{58667, abstract = {{In this work, an innovative approach for the design and structuring of teaching videos systematically using 3D animations is presented. The approach focuses on the quantitative description of electromagnetic fields and the mathematical methods and competencies required for this purpose, exemplarily with regard to an undergraduate electrical engineering course during the initial phase of corresponding degree programs. An essential part of this course is the spatial and time-dependent description of electromagnetic fields. For this purpose, students have to work with multiple integrals in 3D space and in different coordinate systems. Such subjects are typically covered only later in mathematics courses and without a technical context, therefore leading to major difficulties for many students. The videos presented in this work are intended to support students and lecturers to work with these subjects in an instructive fashion. The 3D animations allow for effectively clarifying complex connections between technical and mathematical aspects. The videos and their specific design are discussed with regard to didactic and technical considerations. Additionally, their integration with existing interventions for the course is described.}}, author = {{Hennig, Markus and Mertsching, Bärbel}}, booktitle = {{Proceedings of the 3rd International Conference on Higher Education Advances (HEAd’17)}}, publisher = {{Universitat Politècnica València}}, title = {{{Innovative 3D Animations for Teaching Electromagnetic Field Theory and its Mathematics in Undergraduate Engineering}}}, doi = {{10.4995/head17.2017.5327}}, year = {{2017}}, } @article{60397, author = {{Campen, Marcel}}, issn = {{0272-1716}}, journal = {{IEEE Computer Graphics and Applications}}, number = {{3}}, pages = {{88--95}}, publisher = {{Institute of Electrical and Electronics Engineers (IEEE)}}, title = {{{Tiling the Bunny: Quad Layouts for Efficient 3D Geometry Representation}}}, doi = {{10.1109/mcg.2017.35}}, volume = {{37}}, year = {{2017}}, } @article{7481, abstract = {{The electronic band structures of hexagonal ZnO and cubic ZnS, ZnSe, and ZnTe compounds are determined within hybrid-density-functional theory and quasiparticle calculations. It is found that the band-edge energies calculated on the G0W0 (Zn chalcogenides) or GW (ZnO) level of theory agree well with experiment, while fully self-consistent QSGW calculations are required for the correct description of the Zn 3d bands. The quasiparticle band structures are used to calculate the linear response and second-harmonic-generation (SHG) spectra of the Zn–VI compounds. Excitonic effects in the optical absorption are accounted for within the Bethe–Salpeter approach. The calculated spectra are discussed in the context of previous experimental data and present SHG measurements for ZnO.}}, author = {{Riefer, Arthur and Weber, Nils and Mund, Johannes and Yakovlev, Dmitri R. and Bayer, Manfred and Schindlmayr, Arno and Meier, Cedrik and Schmidt, Wolf Gero}}, issn = {{1361-648X}}, journal = {{Journal of Physics: Condensed Matter}}, number = {{21}}, publisher = {{IOP Publishing}}, title = {{{Zn–VI quasiparticle gaps and optical spectra from many-body calculations}}}, doi = {{10.1088/1361-648x/aa6b2a}}, volume = {{29}}, year = {{2017}}, } @article{19842, abstract = {{Non-trivial electronic properties of silver telluride and other chalcogenides, such as the presence of a topological insulator state, electronic topological transitions, metallization, and the possible emergence of superconductivity under pressure have attracted attention in recent years. In this work, we studied the electronic properties of silver selenide (Ag2Se). We performed direct current electrical resistivity measurements, in situ Raman spectroscopy, and synchrotron x-ray diffraction accompanied by ab initio calculations to explore pressure-induced changes to the atomic and electronic structure of Ag2Se. The temperature dependence of the electrical resistivity was measured up to 30 GPa in the 4–300 K temperature interval. Resistivity data showed an unusual increase in the thermal energy gap of phase I, which is a semiconductor under ambient conditions. Recently, a similar effect was reported for the 3D topological insulator Bi2Se3. Raman spectroscopy studies revealed lattice instability in phase I indicated by the softening of observed vibrational modes with pressure. Our hybrid functional band structure calculations predicted that phase I of Ag2Se would be a narrow band gap semiconductor, in accordance with experimental results. At a pressure of ~7.5 GPa, Ag2Se underwent a structural transition to phase II with an orthorhombic Pnma structure. The temperature dependence of the resistivity of Ag2Se phase II demonstrated its metallic character. Ag2Se phase III, which is stable above 16.5 GPa, is also metallic according to the resistivity data. No indication of the superconducting transition is found above 4 K in the studied pressure range.}}, author = {{Naumov, P and Barkalov, O and Mirhosseini, Hossein and Felser, C and A Medvedev, S}}, journal = {{Journal of Physics: Condensed Matter}}, number = {{38}}, pages = {{385801}}, publisher = {{{IOP} Publishing}}, title = {{{Atomic and electronic structures evolution of the narrow band gap semiconductor Ag2Se under high pressure}}}, doi = {{10.1088/0953-8984/28/38/385801}}, volume = {{28}}, year = {{2016}}, }