@inproceedings{11790, abstract = {{A major drawback of distributed versus terminal-based speech recognition is the fact that transmission errors can lead to degraded recognition performance. In this paper we employ soft features to mitigate the effect of bit errors on wireless transmission links: At the receiver a posteriori probabilities of the transmitted feature vectors are computed by combining bit reliability information provided by the channel decoder and a priori knowledge about residual redundancy in the feature vectors. While the first-order moment of the a posteriori probability function is the MMSE estimate, the second-order moment is a measure of the uncertainty in the reconstructed features. We conducted realistic simulations of GSM transmission and achieved significant improvements in word accuracy compared to the error mitigation strategy described in the ETSI standard.}}, author = {{Haeb-Umbach, Reinhold and Ion, Valentin}}, booktitle = {{International Conference on Spoken Language Processing (ICSLP 2004)}}, title = {{{Soft Features for Improved Distributed Speech Recognition over Wireless Networks}}}, year = {{2004}}, } @inproceedings{11931, abstract = {{The paper is concerned with binaural signal processing for a bimodal human-robot interface with hearing and vision. The two microphone signals are processed to obtain an enhanced single-channel input signal for the subsequent speech recognizer and to localize the acoustic source, an important information for establishing a natural human-robot communication. We utilize a robust adaptive algorithm for filter-and-sum beamforming (FSB) and extract speaker direction information from the resulting FIR filter coefficients. Further, particle filtering is applied which conducts a nonlinear Bayesian tracking of speaker movement. Good location accuracy can be achieved even in highly reverberant environments. The results obtained outperform the conventional generalized cross correlation (GCC) method.}}, author = {{Warsitz, Ernst and Haeb-Umbach, Reinhold}}, booktitle = {{IEEE Workshop on Multimedia Signal Processing (MMSP 2004)}}, keywords = {{bimodal human-robot interface, binaural signal processing, enhanced single-channel input signal, filter-and-sum beamforming, filtering theory, FIR filter coefficient, generalized cross correlation method, microphones, microphone signal, nonlinear Bayesian tracking, particle filtering, robust adaptive algorithm, robust speaker direction estimation, signal processing, speech enhancement, speech recognition, speech recognizer, user interfaces}}, pages = {{367--370}}, title = {{{Robust speaker direction estimation with particle filtering}}}, doi = {{10.1109/MMSP.2004.1436569}}, year = {{2004}}, } @inproceedings{11932, abstract = {{While the main objective of adaptive Filter-and-Sum beamforming is to obtain an enhanced speech signal for subsequent processing like speech recognition, we show how speaker localization information can be derived from the filter coefficients. To increase localization accuracy, speaker tracking is performed by non-linear Bayesian state estimation, which is realized by sequential Monte Carlo methods. Improved acquisition and tracking performance was achieved even in highly reverberant environments, in comparison with both a Kalman Filter and a recently proposed Particle Filter operating on the output of a nonadaptive Delay-and-Sum beamformer.}}, author = {{Warsitz, Ernst and Haeb-Umbach, Reinhold and Peschke, Sven}}, booktitle = {{International Conference on Spoken Language Processing (ICSLP 2004)}}, title = {{{Adaptive Beamforming Combined with Particle Filtering for Acoustic Source Localization}}}, year = {{2004}}, } @inbook{12897, author = {{Beutner, Marc and Twardy, M}}, booktitle = {{Mensch. Bildung. Beruf. Herausforderungen an die Berufspädagogik. Dortmunder Beiträge zur Pädagogik}}, editor = {{Busian, A and Drees, G and Lang, M}}, pages = {{81 -- 96}}, publisher = {{Projekt Verlag}}, title = {{{Berufskollegs als Kompetenzzentren und die damit verbundenen Kooperationsanforderungen zwischen Bildungsgängen}}}, volume = {{35}}, year = {{2004}}, } @inproceedings{15362, abstract = {{In der industriellen Messtechnik werden optische, chemische und akustische Messverfahren zur Ermittlung von Prozessgrößen eingesetzt. Dabei haben die akustischen Messverfahren aufgrund ihrer Robustheit und Wartungsfreundlichkeit ein sehr großes Einsatzgebiet. Impulsbasierte Ultraschallmesssysteme werden unter anderem zur Messung von Durchfluss und Füllstand eingesetzt. Zunehmend werden sie aber auch in der Flüssigkeitsanalytik zur Konzentrationsmessung und Stoffanalyse herangezogen. Dabei führen Gasblasen in den zu untersuchenden flüssigen Medien immer wieder zu Problemen, da bei Anwesenheit von Gasblasen die akustischen Stoffkenngrößen verändert werden. Diese Probleme können ihre Ursache auch in der Signalverarbeitung haben. Dieser Beitrag soll zeigen, welche Methoden zur Signalverarbeitung geeignet sind um dieses Problem zu lösen. }}, author = {{Gulsch, Michael and Henning, Bernd}}, location = {{ Ludwigsburg}}, pages = {{31}}, title = {{{Neue Methoden der Signalauswertung für Ultraschall-Messsysteme}}}, year = {{2004}}, } @inproceedings{15363, abstract = {{The classical forms of noise present in the frequency of MEMS resonators have been recently investigated and described in detail. The present paper extends this investigation to 1/f noise. That is of fundamental nature in microelectromechanical systems (MEMS) resonators, and is given by the universal quantum 1/f effect. In recent years new piezoelectric and compound semiconductor materials have been developed along with advanced manufacturing technologies for MEMS including them. These technologies enable the deposition of thin compound semiconductor, or PZT films and their integration into MEMS devices.}}, author = {{Handel, Peter and Henning, Bernd}}, isbn = {{80-2272050-X}}, location = {{Smolenice, Slovakia}}, pages = {{88--89}}, title = {{{1/f-Frequency Fluctations and Phase Noise in MEMS Resonators}}}, year = {{2004}}, } @article{15364, author = {{Henning, Bernd}}, journal = {{Technisches Messen}}, number = {{9}}, pages = {{492--500}}, title = {{{Die akustische Impedanz als Messgröße zur Charakterisierung flüssiger Stoffsysteme}}}, volume = {{71}}, year = {{2004}}, } @inproceedings{15365, abstract = {{The appliance of time-reversal acoustics to classical trans-ducer design, medical, technical or audible range applica-tions brings forward new ideas whenever we need both, focusing acoustical energy in time and space. Unfortunately, the spatiotemporal focusing is limited through the amount of applied transducer elements as well as the ergodicity and randomness of the cavity [1]. This paper will show how the simulated annealing technique, a multi-objec¬tive optimiza-tion algorithm [2], is used to increase the nar¬rowness of the refocused spot by breaking up randomness for the benefit of ergodicity in a predetermined cavity.}}, author = {{Rautenberg, Jens and Olszewski, Dirk and Henning, Bernd}}, booktitle = {{Proceedings of the Joint Congress CFA/DAGA 2004}}, isbn = {{2-9521105-2-2}}, pages = {{1021--1022}}, publisher = {{DEGA}}, title = {{{A Space Optimization Method for Time-Reversal Super-Focusing}}}, year = {{2004}}, } @inproceedings{15801, author = {{Dubois, D. and Hüllermeier, Eyke and Prade, H.}}, booktitle = {{In Proceedings of the Workshop on Alternative Techniques for Data Mining and Knowledge Discovery, IEEE International Conference on Data Mining, Brighton, UK}}, editor = {{Cubero, JC. and Sanchez, D. and Ras, Z. and Sudkamp, T.}}, title = {{{A systematic approach to the assessment of fuzzy association rules}}}, year = {{2004}}, } @inproceedings{15804, author = {{Weskamp, N. and Hüllermeier, Eyke and Kuhn, D. and Klebe, G.}}, booktitle = {{In Proceedings of GCB-2004 of the German Conference on Bioinformatics, Bielefeld, Germany}}, editor = {{Giegerich, R. and Stoye, J.}}, pages = {{131--140}}, publisher = {{Springer}}, title = {{{Graph alignments: A new concept to detect conserved regions in protein active sites}}}, year = {{2004}}, } @inproceedings{14842, author = {{Hüllermeier, Eyke}}, booktitle = {{In Proceedings ECAI-2004, 16th European Conference on Artificial Inteligence, Valencia, Spain}}, editor = {{Lopez de Mantaras, R. and Saitta, L.}}, pages = {{97--101}}, publisher = {{IOS Press}}, title = {{{Instance-based prediction with guaranteed confidence}}}, year = {{2004}}, } @article{14963, author = {{Bach, Stefan and Haan, Peter and Maiterth, Ralf and Sureth-Sloane, Caren}}, journal = {{DIW Berlin: Politikberatung kompakt}}, title = {{{Modelle für die Vermögensbesteuerung von natürlichen Personen und Kapitalgesellschaften - Konzepte, Aufkommen, wirtschaftliche Wirkungen}}}, volume = {{1}}, year = {{2004}}, } @article{14964, author = {{Müller, Jens and Nordhoff, Daniel and Sureth-Sloane, Caren}}, journal = {{Fach 30}}, pages = {{1517--1520}}, title = {{{Der Betriebsausgabenabzug nach aktuellem Recht – Rechtliche Grundlagen und ökonomische Wirkungen, Buchführung, Bilanz, Kostenrechnung, Betrieb und Rechnungswesen}}}, year = {{2004}}, } @article{14966, author = {{Sureth-Sloane, Caren and Nordhoff, Daniel}}, journal = {{Zeitschrift für Steuern und Recht}}, number = {{15}}, pages = {{326--334}}, title = {{{Verschmelzung einer Kapitalgesellschaft auf eine Personengesellschaft - Sind Bilanzierungswahlrechte gemäß § 3 UmwStG notwendig?}}}, volume = {{1}}, year = {{2004}}, } @inproceedings{15039, author = {{Goetz, F. and Hinn, R. and Domik, Gitta}}, booktitle = {{Paderborner Workshop Augmented \& Virtual Reality in der Produktentstehung, Paderborn, Germany}}, title = {{{Augmented Reality als Hilfsmittel zur Navigation und Interaktion in kooperativen Visualisierungen. 3}}}, year = {{2004}}, } @inproceedings{15157, author = {{Böttcher, Stefan and Steinmetz, Rita}}, booktitle = {{Proceedings of the International Conference on Internet Computing, IC '04}}, pages = {{587--593}}, title = {{{Optimized Internet Search Based on a Intersection Test for XPath Expressions under a DTD}}}, year = {{2004}}, } @inproceedings{15217, author = {{Hüllermeier, Eyke and Fürnkranz, J.}}, booktitle = {{In Proceedings IPMU-2004 10th International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems, Perugia, Italy}}, title = {{{Comparison of ranking procedures in pairwise preference learning}}}, year = {{2004}}, } @inproceedings{15218, author = {{Hüllermeier, Eyke and Fürnkranz, J.}}, booktitle = {{in Proceedings FUZZ-IEEE-04, IEEE International Conference on Fuzzy Systems, Budapest, Hungary}}, title = {{{Ranking by pairwise comparison: A note on risk minimization}}}, year = {{2004}}, } @inproceedings{15219, author = {{Karimi, I. and Hüllermeier, Eyke and Meskouris, K.}}, booktitle = {{in Proceedings 6th International FLINS Conference on Applied Computational Intelligence, Duinse Polders, Blankenberg,Belgien}}, title = {{{An earthquake risk assessment method based on fuzzy probability}}}, year = {{2004}}, } @inproceedings{15220, author = {{Hüllermeier, Eyke and Beringer, J.}}, booktitle = {{In Proceedings IPMU-2004 10th International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems, Perugia, Italy}}, title = {{{Learning decision rules from positive and negative preferences}}}, year = {{2004}}, }