@inproceedings{21700, author = {{Jahnke, U. and Lindemann, C.}}, booktitle = {{Inside 3D Printing Conference and Expo}}, title = {{{Sustainable Part Selection for the Use of Additive Manufacturing in Companies Focussing on Prevention of Product Piracy}}}, year = {{2015}}, } @article{6426, abstract = {{Nano-communication is considered to become a major building block for many novel applications in the health care and fitness sector. Given the recent developments in the scope of nano machinery, coordination and control of these devices becomes the critical challenge to be solved. In-Body Nano-Communication based on either molecular, acoustic, or RF radio communication in the terahertz band supports the exchange of messages between these in-body devices. Yet, the control and communication with external units is not yet fully understood. In this paper, we investigate the challenges and opportunities of connecting Body Area Networks and other external gateways with in-body nano-devices, paving the road towards more scalable and efficient Internet of Nano Things (IoNT) systems. We derive a novel network architecture supporting the resulting requirements and, most importantly, investigate options for the simulation based performance evaluation of such novel concepts. Our study is concluded by a first look at the resulting security issues considering the high impact of potential misuse of the communication links. }}, author = {{Dressler, Falko and Fischer, Stefan}}, journal = {{Elsevier Nano Communication Networks}}, pages = {{29--38}}, publisher = {{Elsevier}}, title = {{{Connecting In-Body Nano Communication with Body Area Networks: Challenges and Opportunities of the Internet of Nano Things}}}, doi = {{10.1016/j.nancom.2015.01.006}}, volume = {{6}}, year = {{2015}}, } @article{6427, abstract = {{Platooning, the idea of cars autonomously following their leaders to form a road train, has huge potentials to improve traffic flow efficiency and, most importantly, road traffic safety. Wireless communication is a fundamental building block - it is needed to manage and to maintain the platoons. To keep the system stable, strict constraints in terms of update frequency and communication reliability must be met. We investigate different communication strategies by explicitly taking into account the requirements of the controller, exploiting synchronized communication slots as well as transmit power adaptation. As a baseline, we compared the proposed approaches to two state of the art adaptive beaconing protocols that have been designed for cooperative awareness applications, namely ETSI DCC and DynB. Our simulation models have been parameterized and validated by means of real-world experiments. Our results demonstrate that the combination of synchronized communication slots with transmit power adaptation is perfectly suited for cooperative driving applications, even in very crowded freeway scenarios. }}, author = {{Segata, Michele and Bloessl, Bastian and Joerer, Stefan and Sommer, Christoph and Gerla, Mario and Lo Cigno, Renato and Dressler, Falko}}, journal = {{IEEE Transactions on Vehicular Technology}}, number = {{12}}, pages = {{5411--5423}}, publisher = {{IEEE}}, title = {{{Towards Communication Strategies for Platooning: Simulative and Experimental Evaluation}}}, doi = {{10.1109/TVT.2015.2489459}}, volume = {{64}}, year = {{2015}}, } @article{4592, author = {{Feng, Yuanhua and Forstinger, Sarah and Peitz, Christian}}, issn = {{0094-9655}}, journal = {{Journal of Statistical Computation and Simulation}}, number = {{12}}, pages = {{2291--2307}}, publisher = {{Informa UK Limited}}, title = {{{On the iterative plug-in algorithm for estimating diurnal patterns of financial trade durations}}}, doi = {{10.1080/00949655.2015.1107908}}, volume = {{86}}, year = {{2015}}, } @inproceedings{745, author = {{Dräxler, Martin and Blobel, Johannes and Karl, Holger}}, booktitle = {{8th IFIP Wireless and Mobile Networking Conference, WMNC 2015, Munich, Germany, October 5-7, 2015}}, pages = {{136----143}}, title = {{{Anticipatory Download Scheduling in Wireless Video Streaming with Uncertain Data Rate Prediction}}}, doi = {{10.1109/WMNC.2015.21}}, year = {{2015}}, } @inproceedings{747, author = {{Auroux, Sébastien and Karl, Holger}}, booktitle = {{26th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2015, Hong Kong, China, August 30 - September 2, 2015}}, pages = {{1850----1855}}, title = {{{Flexible reassignment of flow processing-aware controllers in future wireless networks}}}, doi = {{10.1109/PIMRC.2015.7343600}}, year = {{2015}}, } @inproceedings{748, author = {{Auroux, Sébastien and Karl, Holger}}, booktitle = {{2015 IEEE Wireless Communications and Networking Conference, WCNC 2015, New Orleans, LA, USA, March 9-12, 2015}}, pages = {{1787----1792}}, title = {{{Efficient flow processing-aware controller placement in future wireless networks}}}, doi = {{10.1109/WCNC.2015.7127739}}, year = {{2015}}, } @inproceedings{9951, abstract = {{Ultrasonic wire bonding is an indispensable process in the manufacturing of semiconductor components. It is used for interconnecting the silicon die to e.g. connectors in the housing or to other semiconductors in complex components. In high power applications, such as wind turbines, locomotives or electric vehicles, the thermal and mechanical limits of interconnects made from aluminum are nearing. The limits could be overcome using copper wire bonds, but their manufacturing poses challenges due to the harder material, which leads to increased wear of the bond tools and to less reliable production. To overcome these drawbacks, adaptation of process parameters at runtime is employed. However, the range of parameter values for which a stable process can be maintained is very small, making it necessary to compute suitable parameters beforehand. To this end, and to gain insights into the process itself, the ultrasonic bonding process is modeled. The full model is composed of several partial models, some of which were introduced before. This paper focuses on the modularization of the full model and on the interaction of partial models. All partial models are presented, their interaction is shown and the general outline of the simulation process is given.}}, author = {{Meyer, Tobias and Unger, Andreas and Althoff, Simon and Sextro, Walter and Brökelmann, Michael and Hunstig, Matthias and Guth, Karsten}}, booktitle = {{2015 17th Electronics Packaging Technology Conference}}, title = {{{Modeling and simulation of the ultrasonic wire bonding process}}}, doi = {{10.1109/EPTC.2015.7412377}}, year = {{2015}}, } @inproceedings{9952, abstract = {{The contact between viscoelastic materials e.g. elastomers and a rough surface leads to a special friction characteristic, which differs greatly in its properties comparing to other materials like metals. In practice, this friction combination occurs for example in the tire-road contact, or in the use of rubber gaskets. Due to the frictional forces a system is significantly influenced in its vibrational properties. The friction force is composed of two main components adhesion and hysteresis. The adhesion results from molecular bounds between the contact partners, while the deformation of the viscoelastic material by the roughness of the counter body leads to power loss. This internal friction results in an additional frictional force, which is described by the hysteresis. To simulate the frictional behaviour of elastomers on rough surfaces and thus to determine the energy dissipation in contact, it is necessary to develop a mechanical model which considers the roughness of the contact partners, as well as dynamic effects and the dependence on normal pressure and sliding speed. The viscoelastic material behaviour must also be considered. The contact between two rough surfaces is modelled as a rough rigid layer contacting a rough elas- tic layer. The elastic layer is modelled by point masses connected by Maxwell-elements. This allows the viscoelastic properties of the elastomer to be considered. The behaviour of whole system can be described by equations of motion with integrated constraints. The degrees of freedom of the model depends on the varying contact conditions. A point mass not in contact has two degrees of freedom. A point mass in contact moving along the roughness path can be described by only one degree of freedom. For each Maxwell-Element also an inner coordinate and thus a further degree of freedom is needed. Because of varying contact conditions dur- ing the simulation, the simulation interrupts in case the contact conditions change. Then the equations of motions are adapted with respect to the contact constraints. As a result of the simulation one obtain the energy dissipation and thus the friction char- acteristic during the friction process. It is possible to use these results in three dimensional point-contact elements in order to model contact surfaces on lager length scales.}}, author = {{Schulte, Frank and Neuhaus, Jan and Sextro, Walter}}, booktitle = {{Proceedings of ICoEV 2015 International Conference on Engineering Vibration}}, keywords = {{Contact Mechanics, Viscoelastic Material, Adhesive Friction, Hysteresis Friction, Energy Dissipation, Vibration}}, pages = {{1109--1117}}, title = {{{A Mechanical Model for the Dynamical Contact of Elastic Rough Bodies with Viscoelastic Properties}}}, year = {{2015}}, } @unpublished{16452, abstract = {{We consider the problem of dominating set-based virtual backbone used for routing in asymmetric wireless ad-hoc networks. These networks have non-uniform transmission ranges and are modeled using the well-established disk graphs. The corresponding graph theoretic problem seeks a strongly connected dominating-absorbent set of minimum cardinality in a digraph. A subset of nodes in a digraph is a strongly connected dominating-absorbent set if the subgraph induced by these nodes is strongly connected and each node in the graph is either in the set or has both an in-neighbor and an out-neighbor in it. Distributed algorithms for this problem are of practical significance due to the dynamic nature of ad-hoc networks. We present a first distributed approximation algorithm, with a constant approximation factor and O(Diam) running time, where Diam is the diameter of the graph. Moreover we present a simple heuristic algorithm and conduct an extensive simulation study showing that our heuristic outperforms previously known approaches for the problem.}}, author = {{Abu-Khzam, Faisal N. and Markarian, Christine and Meyer auf der Heide, Friedhelm and Schubert, Michael}}, booktitle = {{arXiv:1510.01866}}, title = {{{Approximation and Heuristic Algorithms for Computing Backbones in Asymmetric Ad-Hoc Networks}}}, year = {{2015}}, } @inproceedings{10767, author = {{Ghribi, Ines and Ben Abdallah, Riadh and Khalgui, Mohamed and Platzner, Marco}}, booktitle = {{Proceedings of the 29th European Simulation and Modelling Conference (ESM)}}, title = {{{New Codesign Solutions for Modelling and Partitioning of Probabilistic Reconfigurable Embedded Software}}}, year = {{2015}}, } @inbook{12071, author = {{Sommer, Christoph and Härri, Jérôme and Hrizi, Fatma and Schünemann, Björn and Dressler, Falko}}, booktitle = {{Vehicular ad hoc Networks}}, isbn = {{9783319154961}}, title = {{{Simulation Tools and Techniques for Vehicular Communications and Applications}}}, doi = {{10.1007/978-3-319-15497-8_13}}, year = {{2015}}, } @inproceedings{1636, author = {{Auroux, Sébastien and Draxler, Martin and Morelli, Arianna and Mancuso, Vincenzo}}, booktitle = {{2015 European Conference on Networks and Communications (EuCNC)}}, isbn = {{9781467373593}}, publisher = {{IEEE}}, title = {{{Dynamic network reconfiguration in wireless DenseNets with the CROWD SDN architecture}}}, doi = {{10.1109/eucnc.2015.7194057}}, year = {{2015}}, } @article{13893, abstract = {{In this contribution, we present an efficient approach for the transient and time-causal modeling of guided waves in viscoelastic cylindrical waveguides in the context of ultrasonic material characterization. We use the scaled boundary finite element method (SBFEM) for efficient computation of the phase velocity dispersion. Regarding the viscoelastic behavior of the materials under consideration, we propose a decomposition approach that considers the real-valued frequency dependence of the (visco-)elastic moduli and, separately, of their attenuation. The modal expansion approach is utilized to take the transmitting and receiving transducers into account and to propagate the excited waveguide modes through a waveguide of finite length. The effectiveness of the proposed simulation model is shown by comparison with a standard transient FEM simulation as well as simulation results based on the exact solution of the complex-valued viscoelastic guided wave problem. Two material models are discussed, namely the fractional Zener model and the anti-Zener model; we re-interpret the latter in terms of the Rayleigh damping model. Measurements are taken on a polypropylene sample and the proposed transient simulation model is used for inverse material characterization. The extracted material properties may then be used in computer-aided design of ultrasonic systems.}}, author = {{Bause, Fabian and Gravenkamp, Hauke and Rautenberg, Jens and Henning, Bernd}}, issn = {{0957-0233}}, journal = {{Measurement Science and Technology}}, keywords = {{viscoelasticity, ultrasonics, guided waves, inverse problem, scaled boundary finite element method}}, number = {{095602 (17pp)}}, title = {{{Transient modeling of ultrasonic guided waves in circular viscoelastic waveguides for inverse material characterization}}}, doi = {{10.1088/0957-0233/26/9/095602}}, volume = {{26}}, year = {{2015}}, } @inproceedings{13897, abstract = {{This contribution will give a short introduction to the most important mechanic and acoustic parameters that are necessary to model and simulate frequency dependent sound propagation (dispersion) in isotropic but linear viscoelastic materials. Furthermore, several experimental techniques to measure these parameters will be discussed, like the dynamic-mechanical analysis and transient ultrasonic techniques. Finally it will be shown how to use the determined material parameters for the simulation of transient signals in a highly attenuative acoustic waveguide.}}, author = {{Rautenberg, Jens and Bause, Fabian and Henning, Bernd}}, booktitle = {{AMA~Conferences 2015}}, editor = {{Service GmbH}, AMA}}, pages = {{130--135}}, title = {{{Utilizing guided acoustic waves to measure dispersive material properties of polymers}}}, year = {{2015}}, } @inproceedings{24293, abstract = {{Parallel Sequence Spread Spectrum (PSSS) is a physical layer baseband technology wherein parallel data streams are transmitted simultaneously by spreading them using orthogonal codes. PSSS was selected for the wireless sensor network standard IEEE802.15.4-2006 to increase data rate and improve performance in fading channels for frequency bands below 1 GHz. Since then it has gained interest for both wireless and wired communication links.}}, author = {{Javed, Abdul Rehman and Scheytt, Christoph}}, booktitle = {{1st URSI Atlantic Radio Science Conference (URSI AT-RASC 2015)}}, title = {{{System Design and Simulation of a PSSS Based Mixed Signal Transceiver for a 20 Gbps Bandwidth Limited Communication Link}}}, doi = {{10.1109/URSI-AT-RASC.2015.7302987}}, year = {{2015}}, } @inproceedings{30582, author = {{Schulte, Christoph and Böcker, Joachim}}, booktitle = {{IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society}}, publisher = {{IEEE}}, title = {{{Co-simulation of an interior permanent magnet synchronous motor with segmented rotor structure}}}, doi = {{10.1109/iecon.2014.7048537}}, year = {{2015}}, } @inproceedings{30603, author = {{Paradkar, Milind and Böcker, Joachim}}, booktitle = {{2015 IEEE Energy Conversion Congress and Exposition (ECCE)}}, publisher = {{IEEE}}, title = {{{3D analytical model for estimation of eddy currentlosses in the magnets of IPM machine considering the reaction field of the induced eddy currents}}}, doi = {{10.1109/ecce.2015.7310061}}, year = {{2015}}, } @misc{32999, author = {{Öhlschläger, Claudia}}, booktitle = {{Das achtzehnte Jahrhundert 40.2, 2016}}, publisher = {{Wehrhahn, zahlreiche farbige Abb.}}, title = {{{Rezension zu: Nicola Kaminski; Volker Mergenthaler: Zuschauer im Eckfenster 1821/22 oder Selbstreflexion der Journalliteratur im Journal(text). Mit einem Faksimile des Zuschauers vom April/Mai 1822}}}, year = {{2015}}, } @article{35996, author = {{Schlegel-Matthies, Kirsten}}, journal = {{Ernährung im Fokus. Zeitschrift für Fach-, Lehr- und Beratungskräfte}}, number = {{9-10}}, pages = {{256 -- 261}}, title = {{{Fleisch in unserer Gesellschaft}}}, year = {{2015}}, }