@inproceedings{11884, abstract = {{In this paper we present the design of a particle filter for post filtering instantaneous positioning estimates of GSM mobile terminals. The instantaneous estimates are obtained by comparing signal power levels, which are reported by the mobile terminal to the base station, with a database of predictions using a novel statistically motivated similarity measure. Unlike a simple Euclidian distance measure, the proposed scheme incorporates inherent information about signal power level measurements requested by the serving base station but not reported by the mobile terminal. Furthermore, we show how the Monte Carlo method of particle filtering helps to obtain better position estimates and, surprisingly, also helps to reduce the computational complexity. Results are presented for real field data.}}, author = {{Peschke, Sven and Haeb-Umbach, Reinhold}}, booktitle = {{European Navigation Conference \& Exhibition (ENC 2006)}}, title = {{{A Probabilistic Similarity Measure and a Non-Linear Post-Filter for Mobile Phone Positioning using GSM Signal Power Measurements}}}, year = {{2006}}, } @inproceedings{11885, abstract = {{In this paper we present a novel and statistically motivated similarity measure for database assisted positioning of GSM mobile terminals by evaluating signal power level reports which are transmitted regulary. Unlike a simple Euclidian distance measure, the proposed scheme incorporates inherent information about signal power level measurements requested by the serving base station but not reported by the mobile terminal. Furthermore we show how the Monte Carlo method of nonlinear post filtering using particle filtering helps to obtain better position estimates and surprisingly also helps to reduce the computational complexity. Results are presented for real field data.}}, author = {{Peschke, Sven and Haeb-Umbach, Reinhold}}, booktitle = {{3rd Workshop on Positioning Navigation and Communication (WPNC 2006)}}, title = {{{Particle Filtering of Database assisted Positioning Estimates using a novel Similarity Measure for GSM Signal Power Level Measurements}}}, year = {{2006}}, } @inproceedings{11928, abstract = {{Broadband adaptive beamformers, which use a narrowband SNR-maximization optimization criterion for noise reduction, typically cause distortions of the desired speech signal at the beamformer output. In this paper two methods are investigated to control the speech distortion by comparing the eigenvector beamformer with a maximum likelihood beamformer: One is an analytic solution for the ideal case of absence of reverberation and the other one is a statistically motivated approach. We use the recently introduced gradient-ascent algorithm for adaptive principal eigenvector beamforming and then normalize the filter coefficients by the proposed distortion control methods. Experimental results in terms of the achievable SNR gain and a perceptual speech quality measure are given for the normalized eigenvector beamformer and are compared to standard beamforming methods.}}, author = {{Warsitz, Ernst and Haeb-Umbach, Reinhold}}, booktitle = {{32. Deutsche Jahrestagung fuer Akustik (DAGA 2006)}}, title = {{{Mehrkanalige Sprachsignalverarbeitung durch adaptives Eigenbeamforming fuer Freisprecheinrichtungen im Kraftfahrzeug}}}, year = {{2006}}, } @inproceedings{11929, abstract = {{Broadband adaptive beamformers, which use a narrowband SNR-maximization optimization criterion for noise reduction, typically cause distortions of the desired speech signal at the beamformer output. In this paper two methodsare investigated to control the speech distortion by comparing the eigenvector beamformer with a maximum likelihood beamformer: One is an analytic solution for the ideal case of absence of reverberation and the other one is a statistically motivated approach. We use the recently introduced gradient-ascent algorithm for adaptive principal eigenvector beamforming and then normalize the filter coefficient s by the proposed distortion control methods. Experimental results in terms of the achievable SNR gain and a perceptual speech quality measure are given for the normalized eigenvector beamformer and are compared to standard beamforming methods.}}, author = {{Warsitz, Ernst and Haeb-Umbach, Reinhold}}, booktitle = {{International Workshop on Acoustic Echo and Noise Control (IWAENC 2006)}}, title = {{{Controlling Speech Distortion in Adaptive Frequency-Domain Principal Eigenvector Beamforming}}}, year = {{2006}}, } @inproceedings{11942, abstract = {{Es wird ein marginalisiertes Partikelfilter beschrieben, das zur einkanaligen Sprachsignalverbesserung mit einem nichtlinearen dynamischen Zustandsmodell eingesetzt werden soll. Das System besteht aus einem Partikelfilter zum Tracking von LSP-Parametern und einem Kalman-Filter fuer jedes Partikel, das zur Sprachsignalverbesserung verwendet wird. In unserem Ansatz wird angenommen, dass die Parameter in kurzen Sprachsignalbloecken konstant sind, waehrend das Sprachsignal sich mit jedem Abtastwert aendert. Bei weissem Rauschen werden aehnliche SNR-Gewinne wie mit einem Kalman-EM-iterative Algorithmus erzielt, waehrend das Hintergrundrauschen und die Log-spektrale Distanz etwas geringer sind. Mit einem erweiterten Zustandsmodell wurden auch Untersuchungen fuer farbiges Rauschen durchgefuehrt.}}, author = {{Windmann, Stefan and Haeb-Umbach, Reinhold}}, booktitle = {{7. ITG-Fachtagung Sprachkommunikation}}, title = {{{Einkanalige Sprachsignalverbesserung mit Hilfe eines marginalisierten Partikelfilters}}}, year = {{2006}}, } @inproceedings{11943, abstract = {{A marginalized particle filter is proposed for performing single channel speech enhancement with a non-linear dynamic state model. The system consists of a particle filter for tracking line spectral pair (LSP) parameters and a Kalman filter per particle for speech enhancement. The state model for the LSPs has been learnt on clean speech training data. In our approach parameters and speech samples are processed at different time scales by assuming the parameters to be constant for small blocks of data. Further enhancement is obtained by an iteration which can be applied on these small blocks. The experiments show that similar SNR gains are obtained as with the Kalman-LM-iterative algorithm. However better values of the noise level and the log-spectral distance are achieved}}, author = {{Windmann, Stefan and Haeb-Umbach, Reinhold}}, booktitle = {{IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2006)}}, keywords = {{clean speech training data, iterative methods, iterative speech enhancement, Kalman filter, Kalman filters, Kalman-LM-iterative algorithm, line spectral pair parameters, log-spectral distance, marginalized particle filter, noise level, nonlinear dynamic state speech model, particle filtering (numerical methods), single channel speech enhancement, SNR gains, speech enhancement, speech samples}}, pages = {{I}}, title = {{{Iterative Speech Enhancement using a Non-Linear Dynamic State Model of Speech and its Parameters}}}, doi = {{10.1109/ICASSP.2006.1660058}}, volume = {{1}}, year = {{2006}}, } @article{18597, abstract = {{We propose a new method for calculating optical defect levels and thermodynamic charge-transition levels of point defects in semiconductors, which includes quasiparticle corrections to the Kohn-Sham eigenvalues of density-functional theory. Its applicability is demonstrated for anion vacancies at the (110) surfaces of III–V semiconductors. We find the (+/0) charge-transition level to be 0.49 eV above the surface valence-band maximum for GaAs(110) and 0.82 eV for InP(110). The results show a clear improvement over the local-density approximation and agree closely with an experimental analysis.}}, author = {{Hedström, Magnus and Schindlmayr, Arno and Schwarz, Günther and Scheffler, Matthias}}, issn = {{1079-7114}}, journal = {{Physical Review Letters}}, number = {{22}}, publisher = {{American Physical Society}}, title = {{{Quasiparticle corrections to the electronic properties of anion vacancies at GaAs(110) and InP(110)}}}, doi = {{10.1103/PhysRevLett.97.226401}}, volume = {{97}}, year = {{2006}}, } @article{18599, abstract = {{This paper investigates the influence of the basis set on the GW self-energy correction in the full-potential linearized augmented-plane-wave (LAPW) approach and similar linearized all-electron methods. A systematic improvement is achieved by including local orbitals that are defined as second and higher energy derivatives of solutions to the radial scalar-relativistic Dirac equation and thus constitute a natural extension of the LAPW basis set. Within this approach linearization errors can be eliminated, and the basis set becomes complete. While the exchange contribution to the self-energy is little affected by the increased basis-set flexibility, the correlation contribution benefits from the better description of the unoccupied states, as do the quasiparticle energies. The resulting band gaps remain relatively unaffected, however; for Si we find an increase of 0.03 eV.}}, author = {{Friedrich, Christoph and Schindlmayr, Arno and Blügel, Stefan and Kotani, Takao}}, issn = {{1550-235X}}, journal = {{Physical Review B}}, number = {{4}}, title = {{{Elimination of the linearization error in GW calculations based on the linearized augmented-plane-wave method}}}, doi = {{10.1103/physrevb.74.045104}}, volume = {{74}}, year = {{2006}}, } @inbook{35048, author = {{Süßmann, Johannes}}, booktitle = {{Schiller und die Geschichte}}, editor = {{Hofmann, Michael and Rüsen, Jörn and Springer, Mirjam}}, isbn = {{978-3-7705-4280-2}}, pages = {{44–67}}, publisher = {{Wilhelm Fink}}, title = {{{Denken in Darstellungen – Schiller und die Geschichte}}}, year = {{2006}}, } @article{6073, abstract = {{The paper is concerned with two models of early visual processing which predict that priming of a visual mask by a preceding masked stimulus speeds up conscious perception of the mask (perceptual latency priming). One model ascribes this speed-up to facilitation by visuo-spatial attention [Scharlau, I., & Neumann, O. (2003a). Perceptual latency priming by masked and unmasked stimuli: Evidence for an attentional explanation. Psychological Research 67, 184-197], the other attributes it to nonspecific upgrading mediated by retino-thalamic and thalamo-cortical pathways [Bachmann, T. (1994). Psychophysiology of visual masking: The fine structure of conscious experience. Commack, NY: Nova Science Publishers]. The models make different predictions about the time course of perceptual latency priming. Four experiments test these predictions. The results provide more support for the attentional than for the upgrading model. The experiments further demonstrate that testing latency facilitation w}}, author = {{Scharlau, Ingrid and Ansorge, Ulrich and Horstmann, Gernot}}, issn = {{0001-6918}}, journal = {{Acta Psychologica}}, keywords = {{latency facilitation, temporal order judgments, visual processing, priming, conscious perception, visual mask, Adult, Attention, Female, Humans, Judgment, Male, Perceptual Masking, Reaction Time, Space Perception, Time Perception, Visual Perception, Consciousness States, Judgment, Priming, Visual Masking, Temporal Order (Judgment)}}, number = {{2}}, pages = {{129 -- 159}}, title = {{{Latency facilitation in temporal-order judgments: Time course of facilitation as a function of judgment type.}}}, volume = {{122}}, year = {{2006}}, } @article{6076, abstract = {{In the present study, we examined whether the detection advantage for negative-face targets in crowds of positive-face distractors over positive-face targets in crowds of negative faces can be explained by differentially efficient distractor rejection. Search Condition A demonstrated more efficient distractor rejection with negative-face targets in positive-face crowds than vice versa. Search Condition B showed that target identity alone is not sufficient to account for this effect, because there was no difference in processing efficiency for positive- and negative-face targets within neutral crowds. Search Condition C showed differentially efficient processing with neutral-face targets among positive- or negative-face distractors. These results were obtained with both a within-participants (Experiment 1) and a between-participants (Experiment 2) design. The pattern of results is consistent with the assumption that efficient rejection of positive (more homogenous) distractors is an im}}, author = {{Horstmann, Gernot and Scharlau, Ingrid and Ansorge, Ulrich}}, issn = {{1069-9384}}, journal = {{Psychonomic Bulletin & Review}}, keywords = {{angry face distractors, visual search, negative face distractors, Adult, Anger, Attention, Face, Female, Happiness, Humans, Male, Rejection (Psychology), Visual Perception, Distraction, Face Perception, Visual Perception, Visual Search}}, number = {{6}}, pages = {{1067 -- 1073}}, title = {{{More efficient rejection of happy than of angry face distractors in visual search.}}}, volume = {{13}}, year = {{2006}}, } @article{6094, abstract = {{In the current study, we tested whether search for a visual motion singleton presented among several coherently moving distractors can be more efficient than search for a motion stimulus presented with a single distractor. Under a variety of conditions, multiple spatially distributed and coherently moving distractors facilitated search for a uniquely moving target relative to a single-motion-distractor condition (Experiments 1,3, and 4). Color coherencies among static distractors were not equally effective (Experiments 1 and 2). These results confirm that humans are highly sensitive to antagonistically directed motion signals in backgrounds compared with spatially more confined regions of visual images. (PsycINFO Database Record (c) 2016 APA, all rights reserved)}}, author = {{Ansorge, Ulrich and Scharlau, Ingrid and Labudda, Kirsten}}, issn = {{0340-0727}}, journal = {{Psychological Research}}, keywords = {{visual search, motion singleton, visual images, visual motion, coherently moving distractors, Adult, Attention, Exploratory Behavior, Female, Humans, Male, Motion Perception, Visual Perception, Motion Perception, Stimulus Salience, Visual Search, Distraction, Retinal Image}}, number = {{2}}, pages = {{103 -- 116}}, title = {{{Visual search for a motion singleton among coherently moving distractors.}}}, volume = {{70}}, year = {{2006}}, } @misc{47648, author = {{Schrieb, Jonas}}, title = {{{Von identitätsbasierten Kryptosystemen zu CCA-Sicherheit}}}, year = {{2006}}, } @book{48031, editor = {{Jacke, Christoph and Kimminich, Eva and Schmidt, Siegfried J. }}, isbn = {{978-3-8394-0394-5}}, pages = {{364}}, publisher = {{transcript}}, title = {{{Kulturschutt. Über das Recycling von Theorien und Kulturen}}}, year = {{2006}}, } @misc{49025, author = {{Moritz, Tilman}}, booktitle = {{H-Soz-Kult}}, title = {{{Adelsbilder von der Antike bis zur Gegenwart. Historikertag 2006, Konstanz}}}, year = {{2006}}, } @misc{47691, author = {{Gorski, Michael}}, keywords = {{Diplomarbeit}}, title = {{{Boomerang- und Rechteckangriff auf AES}}}, year = {{2006}}, } @misc{47773, author = {{Bartz, Christina}}, booktitle = {{H-Soz-U-Kult 2 (09.05.06)}}, title = {{{Zu: Clas Dammann: Stimmen aus dem Äther – Fenster zur Welt. Die Anfänge von Radio und Fernsehen in Deutschland. Köln 2005}}}, year = {{2006}}, } @inproceedings{11894, abstract = {{In this paper we consider the problem of detecting speaker changes in audio signals recorded by distant microphones. It is shown that the possibility to exploit the spatial separation of speakers more than makes up the degradation in detection accuracy due to the increased source-to-sensor distance compared to close-talking microphones. Speaker direction information is derived from the filter coefficients of an adaptive Filter-and-Sum Beamformer and is combined with BIC analysis. The experimental results reveal significant improvements compared to BIC-only change detection, be it with the distant or close-talking microphone.}}, author = {{Schmalenstroeer, Joerg and Haeb-Umbach, Reinhold}}, booktitle = {{Interspeech 2006}}, title = {{{Online Speaker Change Detection by Combining BIC with Microphone Array Beamforming}}}, year = {{2006}}, } @misc{18556, author = {{Peckhaus, Volker}}, booktitle = {{zbMATH Open, Zbl 1096.03001}}, title = {{{Floyd, Juliet/Shieh, Sanford (Hgg.), "Future Pasts. The Analytic Tradition in Twentieth-Century Philosophy. Dedicated to Burton Dreben", Oxford University Press: Oxford 2001}}}, year = {{2006}}, } @misc{18521, author = {{Peckhaus, Volker}}, booktitle = {{zbMATH Open, Zbl. 1073.01026}}, title = {{{Husserl, Edmund, Philosophy of Arithmetic. Psychological and Logical Investigations with Supplementary Texts from 1887-1901, übers. u. hg. v. Dallas Willard, Kluwer: Dordrecht 2003 (Collected Works, Bd. 10)}}}, year = {{2006}}, }