@inproceedings{10620, author = {{Anwer, Jahanzeb and Meisner, Sebastian and Platzner, Marco}}, booktitle = {{Reconfigurable Computing and FPGAs (ReConFig), 2013 International Conference on}}, keywords = {{fault tolerant computing, field programmable gate arrays, logic design, reliability, BYU-LANL tool, DRM tool flow, FPGA based hardware designs, avionic application, device technologies, dynamic reliability management, fault-tolerant operation, hardware designs, reconfiguring reliability levels, space applications, Field programmable gate arrays, Hardware, Redundancy, Reliability engineering, Runtime, Tunneling magnetoresistance}}, pages = {{1--6}}, title = {{{Dynamic reliability management: Reconfiguring reliability-levels of hardware designs at runtime}}}, doi = {{10.1109/ReConFig.2013.6732280}}, year = {{2013}}, } @inproceedings{11740, abstract = {{In this contribution we derive the Maximum A-Posteriori (MAP) estimates of the parameters of a Gaussian Mixture Model (GMM) in the presence of noisy observations. We assume the distortion to be white Gaussian noise of known mean and variance. An approximate conjugate prior of the GMM parameters is derived allowing for a computationally efficient implementation in a sequential estimation framework. Simulations on artificially generated data demonstrate the superiority of the proposed method compared to the Maximum Likelihood technique and to the ordinary MAP approach, whose estimates are corrected by the known statistics of the distortion in a straightforward manner.}}, author = {{Chinaev, Aleksej and Haeb-Umbach, Reinhold}}, booktitle = {{38th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013)}}, issn = {{1520-6149}}, keywords = {{Gaussian noise, maximum likelihood estimation, parameter estimation, GMM parameter, Gaussian mixture model, MAP estimation, Map-based estimation, maximum a-posteriori estimation, maximum likelihood technique, noisy observation, sequential estimation framework, white Gaussian noise, Additive noise, Gaussian mixture model, Maximum likelihood estimation, Noise measurement, Gaussian mixture model, Maximum a posteriori estimation, Maximum likelihood estimation}}, pages = {{3352--3356}}, title = {{{MAP-based Estimation of the Parameters of a Gaussian Mixture Model in the Presence of Noisy Observations}}}, doi = {{10.1109/ICASSP.2013.6638279}}, year = {{2013}}, } @article{11862, abstract = {{In this contribution we extend a previously proposed Bayesian approach for the enhancement of reverberant logarithmic mel power spectral coefficients for robust automatic speech recognition to the additional compensation of background noise. A recently proposed observation model is employed whose time-variant observation error statistics are obtained as a side product of the inference of the a posteriori probability density function of the clean speech feature vectors. Further a reduction of the computational effort and the memory requirements are achieved by using a recursive formulation of the observation model. The performance of the proposed algorithms is first experimentally studied on a connected digits recognition task with artificially created noisy reverberant data. It is shown that the use of the time-variant observation error model leads to a significant error rate reduction at low signal-to-noise ratios compared to a time-invariant model. Further experiments were conducted on a 5000 word task recorded in a reverberant and noisy environment. A significant word error rate reduction was obtained demonstrating the effectiveness of the approach on real-world data.}}, author = {{Leutnant, Volker and Krueger, Alexander and Haeb-Umbach, Reinhold}}, journal = {{IEEE Transactions on Audio, Speech, and Language Processing}}, keywords = {{Bayes methods, compensation, error statistics, reverberation, speech recognition, Bayesian feature enhancement, background noise, clean speech feature vectors, compensation, connected digits recognition task, error statistics, memory requirements, noisy reverberant data, posteriori probability density function, recursive formulation, reverberant logarithmic mel power spectral coefficients, robust automatic speech recognition, signal-to-noise ratios, time-variant observation, word error rate reduction, Robust automatic speech recognition, model-based Bayesian feature enhancement, observation model for reverberant and noisy speech, recursive observation model}}, number = {{8}}, pages = {{1640--1652}}, title = {{{Bayesian Feature Enhancement for Reverberation and Noise Robust Speech Recognition}}}, doi = {{10.1109/TASL.2013.2258013}}, volume = {{21}}, year = {{2013}}, } @article{34312, author = {{Elgabarty, Hossam and Wolff, Milian and Glaubitz, Adrian and Hinderberger, Dariush and Sebastiani, Daniel}}, issn = {{1463-9076}}, journal = {{Physical Chemistry Chemical Physics}}, keywords = {{Physical and Theoretical Chemistry, General Physics and Astronomy}}, number = {{38}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{First principles calculation of inhomogeneous broadening in solid-state cw-EPR spectroscopy}}}, doi = {{10.1039/c3cp51938d}}, volume = {{15}}, year = {{2013}}, } @inproceedings{11818, abstract = {{In this paper we present a system for indoor navigation based on received signal strength index information of Wireless-LAN access points and relative position estimates. The relative position information is gathered from inertial smartphone sensors using a step detection and an orientation estimate. Our map data is hosted on a server employing a map renderer and a SQL database. The database includes a complete multilevel office building, within which the user can navigate. During navigation, the client retrieves the position estimate from the server, together with the corresponding map tiles to visualize the user's position on the smartphone display.}}, author = {{Hoang, Manh Kha and Schmitz, Sarah and Drueke, Christian and Vu, Dang Hai Tran and Schmalenstroeer, Joerg and Haeb-Umbach, Reinhold}}, booktitle = {{Positioning Navigation and Communication (WPNC), 2013 10th Workshop on}}, keywords = {{SQL, navigation, smart phones, wireless LAN, RSSI, SQL database, complete multilevel office building, inertial sensor information, inertial smartphone sensors, map renderer, received signal strength index information, relative position estimates, server based indoor navigation, step detection, wireless-LAN access points, Smartphone, fingerprint, indoor navigation, map tile}}, pages = {{1--6}}, title = {{{Server based indoor navigation using RSSI and inertial sensor information}}}, doi = {{10.1109/WPNC.2013.6533263}}, year = {{2013}}, } @article{31298, author = {{Barkhofen, Sonja and Weich, Tobias and Potzuweit, A. and Stöckmann, H.-J. and Kuhl, U. and Zworski, M.}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, keywords = {{General Physics and Astronomy}}, number = {{16}}, publisher = {{American Physical Society (APS)}}, title = {{{Experimental Observation of the Spectral Gap in Microwave n-Disk Systems}}}, doi = {{10.1103/physrevlett.110.164102}}, volume = {{110}}, year = {{2013}}, } @article{39717, author = {{Lorenz, Alexander and Zimmermann, Natalie and Kumar, Satyendra and Evans, Dean R. and Cook, Gary and Martínez, Manuel Fernández and Kitzerow, Heinz-Siegfried}}, issn = {{1559-128X}}, journal = {{Applied Optics}}, keywords = {{Atomic and Molecular Physics, and Optics, Engineering (miscellaneous), Electrical and Electronic Engineering}}, number = {{22}}, publisher = {{The Optical Society}}, title = {{{X-ray scattering of nematic liquid crystal nanodispersion with negative dielectric anisotropy [Invited]}}}, doi = {{10.1364/ao.52.0000e1}}, volume = {{52}}, year = {{2013}}, } @article{39715, author = {{Nordendorf, Gaby and Lorenz, Alexander and Hoischen, Andreas and Schmidtke, Jürgen and Kitzerow, Heinz-Siegfried and Wilkes, David and Wittek, Michael}}, issn = {{0021-8979}}, journal = {{Journal of Applied Physics}}, keywords = {{General Physics and Astronomy}}, number = {{17}}, publisher = {{AIP Publishing}}, title = {{{Hysteresis and memory factor of the Kerr effect in blue phases}}}, doi = {{10.1063/1.4828477}}, volume = {{114}}, year = {{2013}}, } @article{39720, abstract = {{ We examine for the first time how chemically and thermally stable gold nanoparticles (NPs), prepared by a silane conjugation approach, affect both the thermal and the electro-optical properties of a nematic liquid crystal (LC), when doped at concentrations ranging from 0.25 to 7.5 wt%. We find that the octadecylsilane-conjugated gold NPs stabilize both the enantiotropic nematic and the monotropic smectic-A phases of the LC host with a maximum stabilization of 2 ° C for the nematic and 3.5 ° C for the smectic-A phases for the mixture containing 1 wt% of the silanized particles. The same mixture shows the lowest values for the Fréedericksz transition threshold voltage and the highest value for the dielectric anisotropy. Generally, all NP-containing mixtures, except mixtures with NP concentrations exceeding 5 wt%, reduce the threshold voltage, increase the dielectric anisotropy and reduce both rise and decay time; the latter particularly at temperatures at least 10 ° C below the isotropic–nematic phase transition on cooling. }}, author = {{Mirzaei, Javad and Urbanski, Martin and Kitzerow, Heinz-Siegfried and Hegmann, Torsten}}, issn = {{1364-503X}}, journal = {{Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences}}, keywords = {{General Physics and Astronomy, General Engineering, General Mathematics}}, number = {{1988}}, publisher = {{The Royal Society}}, title = {{{Hydrophobic gold nanoparticles via silane conjugation: chemically and thermally robust nanoparticles as dopants for nematic liquid crystals}}}, doi = {{10.1098/rsta.2012.0256}}, volume = {{371}}, year = {{2013}}, } @article{39719, author = {{Vollbrecht, Joachim and Kasdorf, Olga and Quiring, Viktor and Suche, Hubertus and Bock, Harald and Kitzerow, Heinz-Siegfried}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, keywords = {{Physics and Astronomy (miscellaneous)}}, number = {{4}}, publisher = {{AIP Publishing}}, title = {{{Microresonator-enhanced electroluminescence of an organic light emitting diode based on a columnar liquid crystal}}}, doi = {{10.1063/1.4816425}}, volume = {{103}}, year = {{2013}}, } @article{41235, author = {{Atkins, Andrew J. and Bauer, Matthias and Jacob, Christoph R.}}, issn = {{1463-9076}}, journal = {{Physical Chemistry Chemical Physics}}, keywords = {{Physical and Theoretical Chemistry, General Physics and Astronomy}}, number = {{21}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{The chemical sensitivity of X-ray spectroscopy: high energy resolution XANES versus X-ray emission spectroscopy of substituted ferrocenes}}}, doi = {{10.1039/c3cp50999k}}, volume = {{15}}, year = {{2013}}, } @article{41249, author = {{Conrad, Franziska and Bauer, Matthias and Weyeneth, Stephen and Zhou, Ying and Hametner, Kathrin and Günther, Detlef and Patzke, Greta Ricarda}}, issn = {{1293-2558}}, journal = {{Solid State Sciences}}, keywords = {{Condensed Matter Physics, General Materials Science, General Chemistry}}, pages = {{125--132}}, publisher = {{Elsevier BV}}, title = {{{Hierarchically structured copper gallium spinels through microwave hydrothermal methods}}}, doi = {{10.1016/j.solidstatesciences.2013.06.016}}, volume = {{24}}, year = {{2013}}, } @article{39542, author = {{Shayovitz, Dror and Herrmann, Harald and Sohler, Wolfgang and Ricken, Raimund and Silberhorn, Christine and Marom, Dan M.}}, issn = {{0146-9592}}, journal = {{Optics Letters}}, keywords = {{Atomic and Molecular Physics, and Optics}}, number = {{22}}, publisher = {{The Optical Society}}, title = {{{Time-to-space conversion of ultrafast waveforms at 155  μm in a planar periodically poled lithium niobate waveguide}}}, doi = {{10.1364/ol.38.004708}}, volume = {{38}}, year = {{2013}}, } @article{39551, author = {{Herrmann, Harald and Yang, Xu and Thomas, Abu and Poppe, Andreas and Sohler, Wolfgang and Silberhorn, Christine}}, issn = {{1094-4087}}, journal = {{Optics Express}}, keywords = {{Atomic and Molecular Physics, and Optics}}, number = {{23}}, publisher = {{The Optical Society}}, title = {{{Post-selection free, integrated optical source of non-degenerate, polarization entangled photon pairs}}}, doi = {{10.1364/oe.21.027981}}, volume = {{21}}, year = {{2013}}, } @article{40163, author = {{Förtsch, Michael and Fürst, Josef U. and Wittmann, Christoffer and Strekalov, Dmitry and Aiello, Andrea and Chekhova, Maria V. and Silberhorn, Christine and Leuchs, Gerd and Marquardt, Christoph}}, issn = {{2041-1723}}, journal = {{Nature Communications}}, keywords = {{General Physics and Astronomy, General Biochemistry, Genetics and Molecular Biology, General Chemistry, Multidisciplinary}}, number = {{1}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{A versatile source of single photons for quantum information processing}}}, doi = {{10.1038/ncomms2838}}, volume = {{4}}, year = {{2013}}, } @article{39033, author = {{Rohde, Peter P. and Schreiber, Andreas and Štefaňák, Martin and Jex, Igor and Gilchrist, Alexei and Silberhorn, Christine}}, issn = {{1546-1955}}, journal = {{Journal of Computational and Theoretical Nanoscience}}, keywords = {{Electrical and Electronic Engineering, Computational Mathematics, Condensed Matter Physics, General Materials Science, General Chemistry}}, number = {{7}}, pages = {{1644--1652}}, publisher = {{American Scientific Publishers}}, title = {{{Increasing the Dimensionality of Quantum Walks Using Multiple Walkers}}}, doi = {{10.1166/jctn.2013.3104}}, volume = {{10}}, year = {{2013}}, } @article{40160, author = {{Kruse, R and Katzschmann, F and Christ, A and Schreiber, A and Wilhelm, S and Laiho, K and Gábris, A and Hamilton, C S and Jex, I and Silberhorn, Christine}}, issn = {{1367-2630}}, journal = {{New Journal of Physics}}, keywords = {{General Physics and Astronomy}}, number = {{8}}, publisher = {{IOP Publishing}}, title = {{{Spatio-spectral characteristics of parametric down-conversion in waveguide arrays}}}, doi = {{10.1088/1367-2630/15/8/083046}}, volume = {{15}}, year = {{2013}}, } @article{39506, author = {{Brassat, Katharina and Assion, Fabian and Hilleringmann, Ulrich and Lindner, Jörg K. N.}}, issn = {{1862-6300}}, journal = {{physica status solidi (a)}}, keywords = {{Materials Chemistry, Electrical and Electronic Engineering, Surfaces, Coatings and Films, Surfaces and Interfaces, Condensed Matter Physics, Electronic, Optical and Magnetic Materials}}, number = {{8}}, pages = {{1485--1489}}, publisher = {{Wiley}}, title = {{{Self-organization of nanospheres in trenches on silicon surfaces}}}, doi = {{10.1002/pssa.201200899}}, volume = {{210}}, year = {{2013}}, } @article{39508, author = {{Assion, F. and Schönhoff, M. and Hilleringmann, Ulrich}}, issn = {{0361-5235}}, journal = {{Journal of Electronic Materials}}, keywords = {{Materials Chemistry, Electrical and Electronic Engineering, Condensed Matter Physics, Electronic, Optical and Magnetic Materials}}, number = {{7}}, pages = {{1932--1935}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Titanium Disilicide as High-Temperature Contact Material for Thermoelectric Generators}}}, doi = {{10.1007/s11664-013-2478-2}}, volume = {{42}}, year = {{2013}}, } @article{46510, author = {{Hoyer, Kay-Peter and Angrisani, Gian Luigi and Klose, Christian and Bach, Friedrich-Wilhelm and Hassel, Thomas}}, issn = {{0933-5137}}, journal = {{Materialwissenschaft und Werkstofftechnik}}, keywords = {{Mechanical Engineering, Mechanics of Materials, Condensed Matter Physics, General Materials Science}}, number = {{1}}, pages = {{84--93}}, publisher = {{Wiley}}, title = {{{Korrosionsverhalten binärer Magnesium-Zink-Legierungen in salzhaltigen Medien}}}, doi = {{10.1002/mawe.201300019}}, volume = {{44}}, year = {{2013}}, }