@inproceedings{24307, abstract = {{There is a continuous increase of bandwidth-demanding services such as ultra HDTV, 3D TV, etc. which will require data rates up to 100-400 Gb/s for short range wireless communication. This paper introduces a novel mixed-mode design where both analog and digital domain design is considered, which helps in the reduction of power consumption. Parallel Sequence Spread Spectrum (PSSS) is used for physical layer (PHY) baseband technology, which considerably alleviates both transmitter and receiver design.}}, author = {{Kraemer, Rolf and Wolf, Andreas and Scheytt, Christoph and Kallfass, Ingmar and KrishneGowda, Karthik}}, booktitle = {{2014 IEEE 15th Annual IEEE Wireless and Microwave Technology Conference (WAMICON)}}, publisher = {{IEEE}}, title = {{{Wireless 100 Gb/s: PHY layer Overview and Challenges in THz freqency band}}}, doi = {{10.1109/WAMICON.2014.6857743}}, year = {{2014}}, } @inproceedings{30578, author = {{Vogt, T. and Peters, A. and Fröhleke, N. and Böcker, Joachim and Kempen, S.}}, booktitle = {{2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA)}}, publisher = {{IEEE}}, title = {{{Power profile based selection and operation optimization of parallel-connected power converter combinations}}}, doi = {{10.1109/ipec.2014.6870091}}, year = {{2014}}, } @inproceedings{22021, abstract = {{Additive production techniques have the advantage of manufacturing parts without needing a forming tool. One of the most used additive manufacturing processes is "Fused Deposition Modeling" (FDM) which allows the production of prototypes and end-use parts. Due to the manufacture layer by layer, also complex part geometries can be created in one working step. Furthermore, lightweight parts with specific inner core structures can be manufactured in order to achieve good weightrelated strength properties. In this paper the mechanical behavior of lightweight parts manufactured with the 3D production system Fortus 400mc from Stratasys and the material Polyetherimide (PEI) with the trade name Ultem*9085 is analyzed. The test specimens were built up with different inner structures and building directions. Therefore, test specimens with known lightweight core geometries (e.g. corrugated and honeycomb cores) were designed. A four-point bending test was conducted to analyze the strength properties as well as the weight-related strength properties. Additionally the influence of the structure width, the structure wall thickness and the top layer thickness was analyzed using a honeycomb structure.}}, author = {{Bagsik, A. and Josupeit, S. and Schöppner, Volker and Klemp, E.}}, booktitle = {{29th International Conference of the Polymer Processing Society}}, pages = {{696--701}}, publisher = {{American Institute of Physics }}, title = {{{Mechanical Analysis of Lightweight Constructions manufactured with Fused Deposition Modeling}}}, doi = {{10.1063/1.4873874}}, volume = {{29}}, year = {{2014}}, } @phdthesis{30572, author = {{Hu, M.}}, title = {{{Modeling Optimization and Control Design for LCC Resonant Converter Applied in Very Low Frequency High Voltage Generator}}}, year = {{2014}}, } @inproceedings{6941, author = {{Wendlandt, Stefan and Krause, Melanie and Berendes, Sarah and Hanusch, Matthias and Drobisch, Alexander and Berghold, Juliane and Schoppa, Michael and Grunow, Paul and Krauter, Stefan}}, booktitle = {{Proceedings of the 29th European Photovoltaic Solar Energy Conference and Exhibition, Amsterdam (The Netherlands), September 22-16, 2014}}, title = {{{Comparison of Hot Spot Investigations under Laboratory and Field Conditions at Photovoltaic Modules}}}, year = {{2014}}, } @inbook{29416, author = {{Dellnitz, M. and Dumitrescu, R. and Flaßkamp, K. and Gausemeier, J. and Hartmann, P. and Iwanek, P. and Korf, S. and Krüger, M. and Ober-Blöbaum, Sina and Porrmann, M. and Priesterjahn, C. and Stahl, K. and Trächtler, A. and Vaßholz, M.}}, booktitle = {{Jürgen Gausemeier, Franz Josef Rammig, and Wilhelm Schäfer, editors, Design Methodology for Intelligent Technical Systems}}, pages = {{1--25}}, publisher = {{Springer}}, title = {{{The paradigm of self-optimization}}}, year = {{2014}}, } @article{36062, author = {{Schlegel-Matthies, Kirsten and Methfessel, Barbara}}, journal = {{Hauswirtschaft und Wissenschaft}}, number = {{1}}, pages = {{27--38}}, title = {{{ Alltagskultur: viel beschworen, wenig wissenschaftlich durchdrungen?!}}}, volume = {{52}}, year = {{2014}}, } @inbook{46381, abstract = {{Exploratory Landscape Analysis is an effective and sophisticated approach to characterize the properties of continuous optimization problems. The overall aim is to exploit this knowledge to give recommendations of the individually best suited algorithm for unseen optimization problems. Recent research revealed a high potential of this methodology in this respect based on a set of well-defined, computable features which only requires a quite small sample of function evaluations. In this paper, new features based on the cell mapping concept are introduced and shown to improve the existing feature set in terms of predicting expert-designed high-level properties, such as the degree of multimodality or the global structure, for 2-dimensional single objective optimization problems.}}, author = {{Kerschke, Pascal and Preuss, Mike and Hernández, Carlos and Schütze, Oliver and Sun, Jian-Qiao and Grimme, Christian and Rudolph, Günter and Bischl, Bernd and Trautmann, Heike}}, booktitle = {{EVOLVE — A Bridge between Probability, Set Oriented Numerics, and Evolutionary Computation V}}, editor = {{Tantar, Alexandru-Adrian and Tantar, Emilia and Sun, Jian-Qiao and Zhang, Wei and Ding, Qian and Schütze, Oliver and Emmerich, Michael T M and Legrand, Pierrick and Del, Moral Pierre and Coello, Coello Carlos A}}, isbn = {{978-3-319-07493-1}}, pages = {{115–131}}, publisher = {{Springer International Publishing}}, title = {{{Cell Mapping Techniques for Exploratory Landscape Analysis}}}, doi = {{10.1007/978-3-319-07494-8_9}}, volume = {{288}}, year = {{2014}}, } @inbook{46382, abstract = {{The incorporation of expert knowledge into multiobjective optimization is an important issue which in this paper is reflected in terms of an aspiration set consisting of multiple reference points. The behaviour of the recently introduced evolutionary multiobjective algorithm AS-EMOA is analysed in detail and comparatively studied for bi-objective optimization problems w.r.t. R-NSGA2 and a respective variant. It will be shown that the averaged Hausdorff distance, integrated into AS-EMOA, is an efficient means to accurately approximate the desired aspiration set.}}, author = {{Rudolph, G and Schütze, O and Grimme, C and Trautmann, Heike}}, booktitle = {{EVOLVE — A Bridge between Probability, Set Oriented Numerics, and Evolutionary Computation V}}, editor = {{Tantar, A and Tantar, E and Sun, J and Zhang, W and Ding, Q and Schütze, O and Emmerich, M and Legrand, P and Del, Moral P and Coello, Coello CA}}, isbn = {{978-3-319-07493-1}}, pages = {{261–273}}, publisher = {{Springer International Publishing}}, title = {{{A Multiobjective Evolutionary Algorithm Guided by Averaged Hausdorff Distance to Aspiration Sets}}}, doi = {{10.1007/978-3-319-07494-8_18}}, volume = {{288}}, year = {{2014}}, } @inproceedings{46383, abstract = {{We propose an evolutionary multiobjective algorithm that approximates multiple reference points (the aspiration set) in a single run using the concept of the averaged Hausdorff distance.}}, author = {{Rudolph, Günter and Grimme, Christian and Schütze, Oliver and Trautmann, Heike}}, booktitle = {{Proceedings of the Learning and Intelligent OptimizatioN Conference (LION 8)}}, pages = {{153–156}}, publisher = {{Springer}}, title = {{{An Aspiration Set EMOA Based on Averaged Hausdorff Distances}}}, volume = {{8426}}, year = {{2014}}, } @inproceedings{46384, abstract = {{Multimodal optimization requires maintenance of a good search space coverage and approximation of several optima at the same time. We analyze two constitutive optimization algorithms and show that in many cases, a phase transition occurs at some point, so that either diversity collapses or optimization stagnates. But how to derive suitable stopping criteria for multimodal optimization? Experimental results indicate that an algorithm’s population contains sufficient information to estimate the point in time when several performance indicators reach their optimum. Thus, stopping criteria are formulated based on summary characteristics employing objective values and mutation strength.}}, author = {{Wessing, S and Preuss, M and Trautmann, Heike}}, booktitle = {{Proceedings of the Parallel Problem Solving from Nature — PPSN XIII}}, editor = {{Bartz-Beielstein, T and Branke, J and Filipic, B and Smith, J}}, pages = {{141–150}}, publisher = {{Springer}}, title = {{{Stopping Criteria for Multimodal Optimization}}}, doi = {{10.1007/978-3-319-10762-2_14}}, volume = {{8672}}, year = {{2014}}, } @article{54943, abstract = {{Proteolytic activation is a unique feature of the epithelial sodium channel (ENaC). However, the underlying molecular mechanisms and the physiologically relevant proteases remain to be identified. The serine protease trypsin I can activate ENaC in vitro but is unlikely to be the physiologically relevant activating protease in ENaC-expressing tissues in vivo. Herein, we investigated whether human trypsin IV, a form of trypsin that is co-expressed in several extrapancreatic epithelial cells with ENaC, can activate human ENaC. In Xenopus laevis oocytes, we monitored proteolytic activation of ENaC currents and the appearance of $\gamma$ENaC cleavage products at the cell surface. We demonstrated that trypsin IV and trypsin I can stimulate ENaC heterologously expressed in oocytes. ENaC cleavage and activation by trypsin IV but not by trypsin I required a critical cleavage site (Lys-189) in the extracellular domain of the $\gamma$-subunit. In contrast, channel activation by trypsin I was prevented by mutating three putative cleavage sites (Lys-168, Lys-170, and Arg-172) in addition to mutating previously described prostasin (RKRK(178)), plasmin (Lys-189), and neutrophil elastase (Val-182 and Val-193) sites. Moreover, we found that trypsin IV is expressed in human renal epithelial cells and can increase ENaC-mediated sodium transport in cultured human airway epithelial cells. Thus, trypsin IV may regulate ENaC function in epithelial tissues. Our results show, for the first time, that trypsin IV can stimulate ENaC and that trypsin IV and trypsin I activate ENaC by cleavage at distinct sites. The presence of distinct cleavage sites may be important for ENaC regulation by tissue-specific proteases.}}, author = {{Haerteis, Silke and Krappitz, Annabel and Krappitz, Matteus and Murphy, Jane E. and Bertog, Marko and Krueger, Bettina and Nacken, Regina and Chung, Hyunjae and Hollenberg, Morley D. and Knecht, Wolfgang and Bunnett, Nigel W. and Korbmacher, Christoph}}, journal = {{Journal of Biological Chemistry}}, number = {{27}}, pages = {{19067–19078}}, publisher = {{Elsevier}}, title = {{{Proteolytic Activation of the Human Epithelial Sodium Channel by Trypsin IV and Trypsin I Involves Distinct Cleavage Sites}}}, doi = {{10.1074/jbc.m113.538470}}, volume = {{289}}, year = {{2014}}, } @article{40219, author = {{Wagenknecht, Inga and Meier-Gräwe, Uta}}, issn = {{1616-8836}}, journal = {{Zeitschrift für Paar-, Familien- und Sozialtherapie}}, number = {{2}}, pages = {{91--108}}, publisher = {{Psychosozial-Verlag}}, title = {{{Auf- und Ausbau Früher Hilfen in Zeiten knapper öffentlicher Kassen. Warum es sich lohnt, in Frühe Hilfen zu investieren}}}, volume = {{15}}, year = {{2014}}, } @article{40763, abstract = {{Complex-valued signals occur in many areas of science and engineering and are thus of fundamental interest. When developing signal processing methods in the complex domain, there are two key issues: making use of the full statistical information and optimization. In this article, we review the necessary tools to address these two key issues and provide examples in filtering and blind source separation (BSS) that utilize these tools.}}, author = {{Adali, Tulay and Schreier, Peter J.}}, journal = {{IEEE Signal Processing Magazine}}, number = {{5}}, pages = {{112–128}}, title = {{{Optimization and estimation of complex-valued signals}}}, doi = {{10.1109/MSP.2013.2287951}}, volume = {{31}}, year = {{2014}}, } @article{22957, abstract = {{We show, by means of numerical and analytical methods, that media with a repulsive nonlinearity which grows from the center to the periphery support a remarkable variety of previously unknown complex stationary and dynamical three-dimensional (3D) solitary-wave states. Peanut-shaped modulation profiles give rise to vertically symmetric and antisymmetric vortex states, and novel stationary hybrid states, built of top and bottom vortices with opposite topological charges, as well as robust dynamical hybrids, which feature stable precession of a vortex on top of a zero-vorticity soliton. The analysis reveals stability regions for symmetric, antisymmetric, and hybrid states. In addition, bead-shaped modulation profiles give rise to the first example of exact analytical solutions for stable 3D vortex solitons. The predicted states may be realized in media with a controllable cubic nonlinearity, such as Bose–Einstein condensates.}}, author = {{Driben, Rodislav and Kartashov, Yaroslav V. and Malomed, Boris A. and Meier, Torsten and Torner, Lluis}}, issn = {{1367-2630}}, journal = {{New Journal of Physics}}, title = {{{Three-dimensional hybrid vortex solitons}}}, doi = {{10.1088/1367-2630/16/6/063035}}, volume = {{16}}, year = {{2014}}, } @inproceedings{39494, author = {{Kanwar, Kelash and Mager, Thomas and Hilleringmann, Ulrich and Geneiss, Volker and Hedayat, Christian}}, booktitle = {{2014 IEEE RFID Technology and Applications Conference (RFID-TA)}}, publisher = {{IEEE}}, title = {{{Embedded UHF RFID tag design process for rubber transmission belt using 3D model}}}, doi = {{10.1109/rfid-ta.2014.6934208}}, year = {{2014}}, } @article{22955, abstract = {{The dynamics of 3D Airy-vortex wave packets is studied under the action of strong self-focusing Kerr nonlinearity. Emissions of nonlinear 3D waves out of the main wave packets with the topological charges were demonstrated. Because of the conservation of the total angular momentum, charges of the emitted waves are equal to those carried by the parental light structure. The rapid collapse imposes a severe limitation on the propagation of multidimensional waves in Kerr media. However, the structure of the Airy beam carrier allows the coupling of light from the leading, most intense peak into neighboring peaks and consequently strongly postpones the collapse. The dependence of the critical input amplitude for the appearance of a fast collapse on the beam width is studied for wave packets with zero and nonzero topological charges. Wave packets carrying angular momentum are found to be much more resistant to the rapid collapse.}}, author = {{Driben, Rodislav and Meier, Torsten}}, issn = {{0146-9592}}, journal = {{Optics Letters}}, number = {{19}}, pages = {{5539--5542}}, title = {{{Nonlinear dynamics of Airy-vortex 3D wave packets: emission of vortex light waves}}}, doi = {{10.1364/ol.39.005539}}, volume = {{39}}, year = {{2014}}, } @inproceedings{3939, abstract = {{Optical and infrared antennas provide a promising way to couple photons in and out of nanoscale structures. As counterpart to conventional radio antennas, they are able to increase optical felds in sub-wavelength volumes, to enhance excitation and emission of quantum emitters or to direct light, radiated by quantum emitters. The directed emission of these antennas has been mainly pursued by surface plasmon based devices, e.g. Yagi-Uda like antennas, which are rather complicated due to the coupling of several metallic particles. Also, like all metallic structures in optical or infrared regime, these devices are very sensitive to fabrication tolerances and are affected by strong losses. It has been shown recently, that such directed emission can be accomplished by dielectric materials as well. In this paper we present an optimization of nanoscopic antennas in the near infrared regime starting from a metallic Yagi-Uda structure. The optimization is done via a particle-swarm algorithm, using full time domain finite integration simulations to obtain the characteristics of the investigated structure, also taking into account substrates. Furthermore we present a dielectric antenna, which performs even better, due to the lack of losses by an appropriate choice of the dielectric material. These antennas are robust concerning fabrication tolerances and can be realized with different materials for both the antenna and the substrate, without using high index materials.}}, author = {{Hildebrandt, Andre and Reichelt, Matthias and Meier, Torsten and Förstner, Jens}}, booktitle = {{Ultrafast Phenomena and Nanophotonics XVIII}}, editor = {{Betz, Markus and Elezzabi, Abdulhakem Y. and Song, Jin-Joo and Tsen, Kong-Thon}}, keywords = {{tet_topic_opticalantenna}}, pages = {{89841G--8941G--6}}, publisher = {{SPIE}}, title = {{{Engineering plasmonic and dielectric directional nanoantennas}}}, doi = {{10.1117/12.2036588}}, volume = {{8984}}, year = {{2014}}, } @inproceedings{29028, abstract = {{In the last couple of years the amount of structured open government data has increased significantly. Already now, citizens are able to leverage the advantages of open data through increased transparency and better opportunities to take part in governmental decision making processes. Our approach increases the interoperability of existing but distributed open governmental datasets by converting them to the RDF-based NLP Interchange Format (NIF). Furthermore, we integrate the converted data into a geodata store and present a user interface for querying this data via a keyword-based search. The language resource generated in this project is publicly available for download and via a dedicated SPARQL endpoint.}}, author = {{Sherif, Mohamed and Coelho, Sandro and Usbeck, Ricardo and Hellmann, Sebastian and Lehmann, Jens and Brümmer, Martin and Both, Andreas}}, booktitle = {{The 9th edition of the Language Resources and Evaluation Conference, 26-31 May, Reykjavik, Iceland}}, keywords = {{2014 dice simba sherif sys:relevantFor:infai sys:relevantFor:bis sys:relevantFor:geoknow hellmann kilt lehmann usbeck bruemmer nif4oggd group\_aksw kilt Lidmole MOLE}}, title = {{{NIF4OGGD - NLP Interchange Format for Open German Governmental Data}}}, year = {{2014}}, } @inproceedings{406, abstract = {{Stereo-matching algorithms recently received a lot of attention from the FPGA acceleration community. Presented solutions range from simple, very resource efficient systems with modest matching quality for small embedded systems to sophisticated algorithms with several processing steps, implemented on big FPGAs. In order to achieve high throughput, most implementations strongly focus on pipelining and data reuse between different computation steps. This approach leads to high efficiency, but limits the supported computation patterns and due the high integration of the implementation, adaptions to the algorithm are difficult. In this work, we present a stereo-matching implementation, that starts by offloading individual kernels from the CPU to the FPGA. Between subsequent compute steps on the FPGA, data is stored off-chip in on-board memory of the FPGA accelerator card. This enables us to accelerate the AD-census algorithm with cross-based aggregation and scanline optimization for the first time without algorithmic changes and for up to full HD image dimensions. Analyzing throughput and bandwidth requirements, we outline some trade-offs that are involved with this approach, compared to tighter integration of more kernel loops into one design.}}, author = {{Kenter, Tobias and Schmitz, Henning and Plessl, Christian}}, booktitle = {{Proceedings of the International Conference on ReConFigurable Computing and FPGAs (ReConFig)}}, pages = {{1--8}}, publisher = {{IEEE}}, title = {{{Kernel-Centric Acceleration of High Accuracy Stereo-Matching}}}, doi = {{10.1109/ReConFig.2014.7032535}}, year = {{2014}}, }