@inbook{28208, author = {{Ferber, Ferdinand and Gockel, Franz-Barthold and Hampel, Thorsten and Pawlak, Thorsten and Mahnken, Rolf}}, booktitle = {{Experimental Analysis of Nano and Engineering Materials and Structures}}, title = {{{Homogeneous Administration of Experiments in Material Science for Configuration, Monitoring and Analysis}}}, doi = {{10.1007/978-1-4020-6239-1_226}}, year = {{2008}}, } @article{26256, author = {{Mahnken, Rolf}}, issn = {{0029-5981}}, journal = {{International Journal for Numerical Methods in Engineering}}, pages = {{1753--1788}}, title = {{{Geometry update driven by material forces for simulation of brittle crack growth in functionally graded materials}}}, doi = {{10.1002/nme.2468}}, year = {{2008}}, } @article{19130, author = {{Caylak, Ismail and Mahnken, Rolf}}, issn = {{1617-7061}}, journal = {{PAMM}}, pages = {{4040013--4040014}}, title = {{{On the stabilization of tetrahedral finite elements using volume and area bubble functions}}}, doi = {{10.1002/pamm.200700224}}, year = {{2008}}, } @article{28206, author = {{Schneidt, Andreas and Mahnken, Rolf}}, issn = {{1617-7061}}, journal = {{PAMM}}, pages = {{4030013--4030014}}, title = {{{Experimentelle Untersuchungen zum Thermoschock beim Hybridumformprozess}}}, doi = {{10.1002/pamm.200700074}}, year = {{2008}}, } @article{28207, author = {{Wilmanns, Stefan and Mahnken, Rolf}}, issn = {{1617-7061}}, journal = {{PAMM}}, pages = {{4060037--4060038}}, title = {{{Simulation of asymmetric effects for shape memory alloys}}}, doi = {{10.1002/pamm.200700591}}, year = {{2008}}, } @inproceedings{38418, author = {{Hidayat, A. and Koch, B. and Mirvoda, V. and Zhang, H. and Bhandare, S. and Ibrahim, S. K. and Sandel, D. and Noé, Reinhold}}, booktitle = {{2008 CONFERENCE ON OPTICAL FIBER COMMUNICATION/NATIONAL FIBER OPTIC ENGINEERS CONFERENCE, VOLS 1-8}}, isbn = {{978-1-55752-856-8}}, pages = {{421--423}}, title = {{{Fast optical endless polarization tracking with LiNbO3 component}}}, year = {{2008}}, } @article{39941, author = {{Rösler, Margit and Voit, Michael}}, issn = {{1815-0659}}, journal = {{Symmetry, Integrability and Geometry: Methods and Applications}}, keywords = {{Geometry and Topology, Mathematical Physics, Analysis}}, number = {{083}}, pages = {{9pp}}, publisher = {{SIGMA (Symmetry, Integrability and Geometry: Methods and Application)}}, title = {{{A Limit Relation for Dunkl-Bessel Functions of Type A and B}}}, doi = {{10.3842/sigma.2008.083}}, volume = {{4}}, year = {{2008}}, } @article{40429, author = {{Grotjahn, Rebecca}}, journal = {{organ. Journal für die Orgel}}, number = {{4}}, pages = {{36–42}}, title = {{{Meditationen, Geheimnisse, Zufälle: Messiaens Konzept der langage communicable}}}, volume = {{11}}, year = {{2008}}, } @inproceedings{40868, abstract = {{Recently, a generalization of the magnitude squared coherence (MSC) spectrum for more than two random processes has been proposed. The generalized MSC (GMSC) spectrum definition, which is based on the largest eigenvalue of a matrix containing all the pairwise complex coherence spectra, provides a frequency-dependent measure of the linear relationship among several stationary random processes. Moreover, it can be easily estimated by solving a generalized eigenvalue problem. In this paper we apply the GMSC spectrum for detecting the presence of a common signal from a set of linearly distorted and noisy observations. Specifically, the new statistic for the multiple-channel detection problem is the integral of the square root of the GMSC, which can be estimated as the sum of the $P$ largest generalized canonical correlations (typically $P=1$ is enough in practice). Unlike previous approaches, the new statistic implicitly takes into account the spectral characteristics of the signal to be detected (e.g., its bandwidth). Finally, the performance of the proposed detector is compared in terms of its receiver operating characteristic (ROC) curve with the generalized coherence (GC) showing a clear improvement in most scenarios.}}, author = {{Ramírez, D. and Vía, J. and Santamaría, I.}}, booktitle = {{Proc.\ IAPR Work. Cognitive Information Process.}}, title = {{{Multiple-Channel Signal Detection using the Generalized Coherence spectrum}}}, year = {{2008}}, } @inproceedings{40866, abstract = {{This paper is concerned with orthogonal frequencydivision multiplexing interleave-division multiple-access (OFDMIDMA) systems over frequency-selective fading channels. Deliberate clipping is applied to reduce the peak-to-average power ratio (PAPR) of each user’s transmitted signal. An iterative multiuser detection (MUD) technique is developed to recover the performance loss due to clipping. A semi-analytical signal-to-noise ratio (SNR) evolution technique is proposed, which can provide quick and accurate prediction of the iterative MUD performance. Numerical results show that the performance of OFDM-IDMA is not sensitive to the frequency selectivity of channels, and OFDM-IDMA is more power-efficient than other alternative multi-carrier transmission techniques}}, author = {{Tong, Jun and Guo, Qinghua and Ping, Li}}, booktitle = {{IEEE 10th\ Int.\ Symp.\ Spread Spectrum Techn.\ & Appl.}}, pages = {{555–559}}, title = {{{Performance analysis of OFDM-IDMA systems with peak-power limitation}}}, doi = {{10.1109/ISSSTA.2008.109}}, year = {{2008}}, } @inproceedings{40858, abstract = {{In this paper, we study the iterative detection problem for a coded system with multi-ary modulation. We show that, with iterative linear minimum-mean-square-error (LMMSE) detection, superposition coded modulation (SCM) can provide performance superior to that with other traditional signaling schemes used in trellis coded modulation (TCM) and bit-interleaved coded modulation (BICM). This finding provides a useful guideline for system design considering inter-symbol interference (ISI) and other forms of interference. Simulation results are provided to illustrate the efficiency of the iterative LMMSE detection with different signaling schemes.}}, author = {{Ping, Li and Tong, Jun and Yuan, Xiaojun and Guo, Qinghua}}, booktitle = {{Proc.\ IEEE Global Telecomm.\ Conf.}}, pages = {{1–5}}, title = {{{Impact of signaling schemes on iterative linear minimum-mean-square-error detection}}}, doi = {{10.1109/GLOCOM.2008.ECP.665}}, year = {{2008}}, } @article{40859, abstract = {{A complex random vector is called improper if it is correlated with its complex conjugate. We introduce a measure for the degree of impropriety, which is a function of the canonical correlations between the vector and its complex conjugate (sometimes called the circularity spectrum). This measure is invariant under linear transformation, and it relates the entropy of an improper Gaussian random vector to its corresponding proper version. For vectors with given spectrum, we present upper and lower bounds on the attainable degree of impropriety, in terms of the eigenvalues of the augmented covariance matrix.}}, author = {{Schreier, Peter J.}}, journal = {{IEEE Signal Process.\ Lett.}}, pages = {{190–193}}, title = {{{Bounds on the Degree of Impropriety of Complex Random Vectors}}}, doi = {{10.1109/LSP.2007.913134}}, volume = {{15}}, year = {{2008}}, } @inproceedings{40867, abstract = {{We study linear minimum mean square error (LMMSE) filters for estimating a nonstationary second-order continuous-time stochastic process from a noisy observation. The equation for the optimal filter is treated in the Weyl symbol domain, and the involved Weyl symbols are assumed to belong to certain modulation spaces. By discretizing this equation using a Gabor frame we transform it into a matrix equation and obtain a formula for the filter by matrix inversion. The inverse matrix has off-diagonal decay at a rate that increases the more underspread the process is.}}, author = {{Wahlberg, Patrik and Schreier, Peter J.}}, booktitle = {{Proc. 16th\ European Signal Process.\ Conf.}}, title = {{{A time-frequency formula for LMMSE filters for nonstationary underspread continuous-time stochastic processes}}}, year = {{2008}}, } @misc{35461, author = {{Alpsancar, Suzana and Denker, Kai and Kaminski, Andreas and Rölli, Marc and Sabrowski, Maxine and Hetzel, Andreas}}, pages = {{79--86}}, title = {{{Bericht zum XXI. Deutschen Kongress für Philosophie ‚Lebenswelt und Wissenschaft' - Essen, 15.-19.09.2008}}}, year = {{2008}}, } @article{40370, author = {{Haller, Melanie and Fleischle-Braun, Claudia and Stabel (Hg.), Ralf}}, journal = {{TanzForschung und TanzAusbildung. Dokumentation des Jubiläumssymposiums der Gesellschaft für Tanzforschung im Oktober 2007, Hamburg, S. 132-139}}, title = {{{Paartanz als nonverbale Kommunikation und sein (Inter-?) Subjekt. Theoretische Skizze eines Forschungsvorhabens.}}}, year = {{2008}}, } @article{40372, author = {{Haller, Melanie and Funke-Wieneke, Jürgen and Klein (Hg.), Gabriele}}, journal = {{Bewegungsraum und Stadtkultur. Sozial- und kulturwissenschaftliche Perspektiven, Bielefeld 2008, S.51-74 (zusammen mit Gabriele Klein)}}, title = {{{Café Buenos Aires und Galeria del Latino. Zur Translokalität und Hybridität städtischer Tanzkulturen}}}, year = {{2008}}, } @article{40375, author = {{Haller, Melanie and Rehberg (Hg.), Karl-Siegbert }}, journal = {{Die Natur der Gesellschaft. Verhandlungen des 33. Kongresses der Deutschen Gesellschaft für Soziologie 2006), Frankfurt a. M., S. 2734-2747 (zusammen mit Gabriele Klein)}}, title = {{{Die 'Natur der Subjekte'. Subjektivierungsprozesse im Tanz}}}, year = {{2008}}, } @article{40369, author = {{Haller, Melanie}}, journal = {{In: Ästhetik und Kommunikation, Hf. 146, 40 Jahrgang, S. 96-97}}, title = {{{Der einzelne Schritt wird zum Erlebnis“ oder warum tanzt der Mensch}}}, year = {{2008}}, } @article{14935, author = {{Sureth-Sloane, Caren and Maiterth, Ralf}}, issn = {{1863-6683}}, journal = {{Review of Managerial Science}}, number = {{2}}, pages = {{81--110}}, title = {{{The impact of minimum taxation by an imputable wealth tax on capital budgeting and business strategy of German companies}}}, doi = {{10.1007/s11846-008-0016-z}}, volume = {{2}}, year = {{2008}}, } @article{14933, author = {{Niemann, Rainer and Sureth-Sloane, Caren}}, issn = {{0344-9327}}, journal = {{Journal für Betriebswirtschaft}}, number = {{3}}, pages = {{121--140}}, title = {{{Steuern und Risikobereitschaft in Modellen irreversibler Investitionen}}}, doi = {{10.1007/s11301-008-0037-3}}, volume = {{58}}, year = {{2008}}, }