TY - JOUR AU - Flögel, A. AU - Kleine Büning, H. AU - Lettmann, Theodor ID - 19814 JF - RAIRO - Theoretical Informatics and Applications SN - 0988-3754 TI - On the restricted equivalence for subclasses of propositional logic ER - TY - GEN AU - Simon, Jens ID - 2453 TI - Benutzung virtueller Topologien unter PARIX ER - TY - GEN AU - Röttger, Markus AU - Simon, Jens AU - Schroeder, Ulf-Peter ID - 2454 TI - Virtual Topology Library for PARIX ER - TY - GEN AU - Diekmann, Ralf AU - Lüling, Reinhard AU - Simon, Jens ID - 2455 TI - Problem Independent Distributed Simulated Annealing and its Applications ER - TY - CHAP AU - Diekmann, Ralf AU - Simon, Jens ID - 2456 SN - 978-3-642-46787-5 T2 - Applied Simulated Annealing TI - Problem Independent Distributed Simulated Annealing and its Applications VL - 396 ER - TY - GEN AU - Blömer, Johannes ID - 3045 TI - On Kummer theory and the number of roots of unity in radical extensions of Q ER - TY - JOUR AU - Gries, Thomas AU - Wigger, B. ID - 3069 IS - 4 JF - Economia Internationale TI - The Dynamics of Upgrading or how to catch-up VL - 46 ER - TY - BOOK AU - Fuchssteiner, Benno AU - Wiwianka, W. AU - Gottheil, K. AU - Kemper, A. AU - Kluge, O. AU - Morisse, K. AU - Naundorf, H. AU - Oevel, Gudrun AU - Schulze, T. ID - 17302 TI - MuPAD: Multi Processing Algebra Data Tool; Benutzerhandbuch; MuPAD Version 1.1 ER - TY - CONF AU - Peckhaus, Volker ED - Stelzner, Werner ID - 17476 T2 - Philosophie und Logik. Frege-Kolloquien Jena 1989/1991 TI - Ernst Schröder und der Logizismus VL - 3 ER - TY - BOOK ED - Meyer auf der Heide, Friedhelm ED - Monien, B. ED - Rosenberg, A. L. ID - 17477 SN - 0302-9743 TI - Parallel Architectures and Their Efficient Use ER - TY - CHAP AU - Peckhaus, Volker ED - Haller, Rudolf ED - Stadler, Friedrich ID - 17478 T2 - Wien—Berlin—Prag. Der Aufstieg der wissenschaftlichen Philosophie. Zentenarien Rudolf Carnap–Hans Reichenbach–Edgar Zilsel TI - Kurt Grelling und der Logische Empirismus VL - 2 ER - TY - CONF AU - Kastens, Uwe AU - Meyer auf der Heide, Friedhelm AU - Wachsmann, Alf AU - Wichmann, Friedrich ID - 17479 T2 - Proc. 3rd PASA Workshop, PARS Mitteilungen TI - OCCAM-light: A Language Combining Shared Memory and Message Passing (A First Report) ER - TY - JOUR AB - Page 4 AU - Peckhaus, Volker ID - 19046 IS - 4 JF - The Mathematical Intelligencer TI - Fotografie: Ivor Grattan-Guinness (Erlangen, 21.2.1989) VL - 15 ER - TY - BOOK ED - Eke, Norbert Otto ED - Helmes, Günter ID - 19090 TI - Richard Beer-Hofmann (1866-1945). Studien zu seinem Werk ER - TY - BOOK AU - Eke, Norbert Otto ID - 19137 TI - Stanislaw Przybyszewski: Schnee und andere Dramen (Edition) VL - 5 ER - TY - BOOK AU - Eke, Norbert Otto AU - Oellers, Norbert AU - Skrodzki, Karl Jürgen AU - Steinecke, Hartmut ID - 19148 TI - Nikolaus Lenau. Werke und Briefe. Historisch-kritische Gesamtausgabe. Bd. 7. Aufzeichnungen. Vermischte Schriften. Text und Kommentar (Edition) ER - TY - CHAP AU - Eke, Norbert Otto ED - Eke, Norbert Otto ED - Helmes, Günter ID - 19427 T2 - Richard Beer-Hofmann (1866-1945). Studien zu seinem Werk TI - Rettung des Sinns. Jaákobs Traum und das Projekt einer Geschichtstheodizee ER - TY - CHAP AU - Eke, Norbert Otto AU - Helmes, Günter ED - Eke, Norbert Otto ED - Helmes, Günter ID - 19428 T2 - Richard Beer-Hofmann (1866-1945). Studien zu seinem Werk TI - Richard Beer-Hofmann – Zur Einführung ER - TY - CHAP AU - Eke, Norbert Otto ID - 19429 T2 - Grabbe Jahrbuch 12 TI - „Freiheit ist nur in dem Reich der Träume“. Revolutionsprojektionen deutscher Dramen nach 1789. Ein historischer Aufriß (mit einem Ausblick bis zum Nachmärz) ER - TY - JOUR AU - Eke, Norbert Otto ID - 19430 IS - H. 2 JF - Zeitschrift für Germanistik TI - Eine Gesamtbibliographie des deutschen Romans 1815-1830. Anmerkungen zum Problemfeld von Bibliographie und Historiographie VL - NF III ER - TY - CHAP AU - Eke, Norbert Otto ED - Scheuer, Helmut ID - 19431 T2 - Dichter und ihre Nation TI - „Deutschland ortlos“. Dekonstruktionen des Nationalen bei Heiner Müller ER - TY - JOUR AU - Trächtler, Ansgar ID - 23365 JF - Process Tomography - a Strategy for Industrial Exploitation TI - Use of Symmetries in Tomography ER - TY - JOUR AU - Trächtler, Ansgar ID - 23366 JF - at-Automatisierungstechnik TI - Vollständige Modale Synthese stationär unstörbarer und stationär perfekter Zustandsregelungen VL - 41 ER - TY - CONF AU - Engels, Gregor AU - Verrijn-Stuart, A.A. ID - 7826 IS - 251 T2 - Fortschritt-Berichte VDI TI - Integrationsaspekte bei verteilter Software-Entwicklung ER - TY - CONF AU - Krauter, Stefan AU - Hanitsch, Rolf ID - 8089 T2 - Proceedings of the Cairo International Conference of Renewable Energy Sources, Kairo (Ägypten), 30. Dezember 1992 – 2. Januar 1993 TI - Calculating the Influence of Skylight-Polarization on the Transmission of Encapsulations of PV-Modules ER - TY - CONF AU - Krauter, Stefan AU - Hanitsch, Rolf ID - 8090 T2 - Proceedings of the ISES Solar World Congress 1993, Budapest (Ungarn), 23.–27. August 1993, Band 3, S. 249–254 TI - Optical and Thermal Parameters of PV-Module Encapsulation Improving Output Power ER - TY - BOOK AU - Krauter, Stefan ID - 8091 TI - Betriebsmodell der optischen, thermischen und elektrischen Parameter von PV-Modulen ER - TY - GEN AU - Andries, Marc AU - Engels, Gregor ID - 8190 TI - A Hybrid Query Language for the Extended Entity Relationship Model ER - TY - GEN AU - Ehrig, Hartmut AU - Engels, Gregor ID - 8191 TI - Towards a Module Concept for Graph Transformation Systems ER - TY - GEN AU - Engels, Gregor AU - Rozenberg, Grzegorz ID - 8192 TI - Abstracts COMPUGRAPH II Workshop ER - TY - CONF AU - Engels, Gregor AU - Groenewegen, Luuk ID - 8262 T2 - Proceedings of the Workshop on Software Process (ISPW 1993), Wadern (Germany) TI - Modular, Visual Specifications of Software Processes ER - TY - JOUR AU - Sextro, Walter AU - Schmalhorst, B ID - 8895 JF - Zeitschrift für angewandte Mathematik und Mechanik (ZAMM) TI - Static Behaviour of Drill Strings in Curved Boreholes VL - 73 ER - TY - JOUR AU - Barany, Ernest AU - Dellnitz, Michael AU - Golubitsky, Martin ID - 16518 JF - Physica D: Nonlinear Phenomena SN - 0167-2789 TI - Detecting the symmetry of attractors ER - TY - JOUR AU - Krimphove, Dieter ID - 1655 IS - 19. Lieferung JF - Bankkalender 1994 TI - Anmerkungen zum Manteltarifvertrag der Banken - Eine Kommentierung des Manteltarifvertrages des Bankgewerbes 1993 ER - TY - JOUR AU - Krimphove, Dieter ID - 1656 IS - Januar-Heft JF - Recht der Landwirtschaft TI - Erzeugergemeinschaften: Wettbewerbsrechtliche Möglichkeiten zur Unternehmenskooperation in der Landwirtschaft ER - TY - JOUR AU - Krimphove, Dieter ID - 1657 IS - Heft 1 JF - Agrarrecht TI - Neuer europäischer Schutz von Marken- und Herkunftszeichen in der Landwirtschaft ER - TY - JOUR AU - Krimphove, Dieter ID - 1658 IS - Mai JF - Europäische Zeitschrift für Wirtschaftsrecht (EuZW) TI - Europäisches Arbeitsrecht ER - TY - JOUR AB - AbstractWe obtain normal forms for infinitesimally symplectic matrices (or linear Hamiltonian vector fields) that commute with the symplectic action of a compact Lie group of symmetries. In doing so we extend Williamson's theorem on normal forms when there is no symmetry present.Using standard representation-theoretic results the symmetry can be factored out and we reduce to finding normal forms over a real division ring. There are three real division rings consisting of the real, complex and quaternionic numbers. Of these, only the real case is covered in Williamson's original work. AU - Melbourne, Ian AU - Dellnitz, Michael ID - 16633 JF - Mathematical Proceedings of the Cambridge Philosophical Society SN - 0305-0041 TI - Normal forms for linear Hamiltonian vector fields commuting with the action of a compact Lie group ER - TY - JOUR AU - Melbourne, Ian AU - Dellnitz, Michael AU - Golubitsky, Martin ID - 16634 JF - Archive for Rational Mechanics and Analysis SN - 0003-9527 TI - The structure of symmetric attractors ER - TY - JOUR AU - Dietzfelbinger, M. AU - Meyer auf der Heide, Friedhelm ID - 16729 JF - Information and Computation SN - 0890-5401 TI - An Optimal Parallel Dictionary ER - TY - CHAP AU - Meyer auf der Heide, Friedhelm AU - Oesterdiekhoff, Brigitte AU - Wanka, Rolf ID - 16730 SN - 0302-9743 T2 - Automata, Languages and Programming TI - Strongly adaptive token distribution ER - TY - CONF AU - Dietzfelbinger, Martin AU - Meyer auf der Heide, Friedhelm ID - 16731 SN - 0897915992 T2 - Proceedings of the fifth annual ACM symposium on Parallel algorithms and architectures - SPAA '93 TI - Simple, efficient shared memory simulations ER - TY - CHAP AU - Lürwer-Brüggemeier, Katharina AU - Meyer auf der Heide, Friedhelm ID - 16732 SN - 0302-9743 T2 - Lecture Notes in Computer Science TI - Capabilities and complexity of computations with integer division ER - TY - CONF AU - Domik, Gitta ED - D. Franklin, Stephen ED - R. Stubberud, Allen ED - P. Wiedeman, Lyle ID - 16828 T2 - University Education Uses of Visualization in Scientific Computing, Proceedings of the {IFIP} {WG3.2} Working Conference on Visualization in Scientific Computing: Uses in University Education, Irvine, CA, USA, 28-30 July, 1993 TI - Education in Scientific Visualization VL - {A-48} ER - TY - CONF AU - Domik, Gitta ED - Maurer, H. ID - 16906 T2 - Proceedings of ED Media '93 TI - Scientific Visualization ER - TY - JOUR AU - Dellnitz, Michael ID - 17013 JF - Lectures in Applied Mathematics TI - The equivariant Darboux theorem VL - 29 ER - TY - CONF AB - Linear discriminant analysis (LDA) experiments reported previously (ICASSP-92 vol.1, p.13-16), are extended to context-dependent models and speaker-independent large vocabulary continuous speech recognition. Two variants of using mixture densities are compared: state-specific modeling and the monophone-tying approach where densities are shared across the states relevant to the same phoneme. Results are presented on the DARPA Resource Management (RM) task for both speaker-dependent (SD) and speaker-independent (SI) parts. Using triphone models based on LDA and continuous mixture densities, significant improvements have been observed and the following word error rates have been achieved: for the SD part, 7.8% without grammar and 1.5% with word pair; and for the SI part, 17.2% and 4.6%, respectively. These scores are averaged over 1200 SD or SI evaluation sentences and are among the best published so far on the RM database. AU - Aubert, Xavier L. AU - Haeb-Umbach, Reinhold AU - Ney, Hermann ID - 11718 T2 - ICASSP, Minneapolis TI - Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models ER - TY - JOUR AB - To decrease the hazards of using mobile phones while driving, voice processing provides several tools that simplify their use: echo cancellation allows comfortable hands-free conversation, feedback and user guidance by voice allow to operate the phone in eyes-busy situations, and last not least speech recognition frees from keypad data entry to operate the telephone. A comprehensive view of a device incorporating the above mentioned technologies, which has been realized as an add-on for the Philips car telephone family, will be presented. Emphasis is placed on the speech recognition algorithms. Robustness of the algorithms to changing acoustic environment was improved by estimating and subtracting the long-term spectrum. We will show that, if this operation is done recursively, it is equivalent to the high-pass filtering or RASTA (Relative Spectral Approaches) methods recently proposed in the literature. AU - Dobler, Stefan AU - Geller, Dieter AU - Haeb-Umbach, Reinhold AU - Meyer, Peter AU - Ney, Hermann AU - Ruehl, Hans Wilhelm ID - 11749 JF - Speech Communication TI - Design and use of speech recognition algorithms for a mobile radio telephone ER - TY - CONF AB - Four methods were used to reduce the error rate of a continuous-density hidden Markov-model-based speech recognizer on the TI/NIST connected-digits recognition task. Energy thresholding sets a lower limit on the energy in each frequency channel to suppress spurious distortion accumulation caused by random noise. This led to an improvement in error rate by 15%. Spectrum normalization was used to compensate for across-speaker variations, resulting in an additional improvement by 20%. The acoustic resolution was increased up to 32 component densities per mixture. Each doubling of the number of component densities yielded a reduction in error rate by roughly 20%. Linear discriminant analysis was used for improved feature selection. A single class-independent transformation matrix was applied to a large input vector consisting of several adjacent frames, resulting in an improvement by 20% for high acoustic resolution. The final string error rate was 0.84%. AU - Haeb-Umbach, Reinhold AU - Geller, Dieter AU - Ney, Hermann ID - 11788 T2 - ICASSP, Minneapolis TI - Improvements in Connected Digit Recognition Using Linear Discriminant Analysis and Mixture Densities ER - TY - CONF AB - This paper gives a status report of the Philips research system for phoneme-based, large-vocabulary, continuous-speech recognition. Like for many other systems, the recognition architecture is based on an integrated statistical approach. We describe the characteristic features of the system as opposed to other systems: 1. The Viterbi criterion is consistently applied both in training and testing. 2. Continuous mixture densities are used without tying or smoothing. 3. Time-synchronous beam search in connection with a phoneme look-ahead is applied to a tree-organized lexicon. The system has been successfully applied to the American English DARPA RM task. Here, we report experimental results for a German 13 000-word Philips internal dictation task. In addition to the scientific prototype, a PC version has been set up which is described here for the first time. AU - Steinbiss, Volker AU - Ney, Hermann AU - Haeb-Umbach, Reinhold AU - Train, B.-H. AU - Essen, U. AU - Kneser, Reinhard AU - Oerder, Martin AU - Meier, H. G. AU - Aubert, X. AU - Dugast, Christian AU - Geller, Dieter AU - Hoellerbauer, W. AU - Bartosik, H. ID - 11904 T2 - EUROSPEECH, Berlin TI - The Philips Research System for Large-Vocabulary Continuous-Speech Recognition ER - TY - JOUR AU - Domik, Gitta ID - 15045 JF - COMPUTER GRAPHICS-NEW YORK-ASSOCIATION FOR COMPUTING MACHINERY- TI - An Agenda for Education in Scientific Visualization, Visualization'92 Workshop Report VL - 27 ER - TY - JOUR AU - Domik, Gitta ID - 15273 IS - 2 JF - Computers & Graphics SN - 1017-4656 TI - Guidelines for a curriculum in scientific visualization VL - 17 ER - TY - CONF AU - Domik, Gitta AU - Joslyn, C AU - Segura, T ID - 15275 T2 - Proceedings of the Vienna Conference on Human Computer Interaction TI - Macroscopic and Microscopic Aspects of Glyphs ER - TY - JOUR AU - Schmidt, Wolf Gero AU - Srivastava, G P ID - 13857 IS - 49 JF - Journal of Physics: Condensed Matter SN - 0953-8984 TI - Chemisorption of aluminium on GaAs(110) VL - 5 ER - TY - JOUR AU - Schmidt, Wolf Gero AU - Wenzien, Bernd AU - Bechstedt, Friedhelm ID - 13858 IS - 9-10 JF - Czechoslovak Journal of Physics SN - 0011-4626 TI - AB initio calculation of the atomic and electronic structure for Sb adsorbed on GaAs(110) VL - 43 ER - TY - GEN AU - Hellebrand, Sybille AU - Tarnick, Steffen AU - Rajski, Janusz AU - Courtois, Bernard ID - 13081 KW - WORKSHOP TI - Effiziente Erzeugung deterministischer Muster im Selbsttest ER - TY - GEN AU - Hellebrand, Sybille AU - Wunderlich, Hans-Joachim ID - 13082 KW - WORKSHOP TI - Synthesis of Self-Testable Controllers ER - TY - JOUR AU - Platzner, Marco AU - Steger, Christian ID - 13466 JF - Mikroelektronik TI - Erfahrungen mit einer Multi-Signalprozessorarchitektur (TMS320C40) ER - TY - CONF AU - Platzner, Marco AU - Steger, Christian AU - Weiss, Reinhold ID - 13467 T2 - Proceedings of the 4th International Conference on Signal Processing Applications & Technology (ICSPAT) TI - Performance Measurements on a Multi-DSP Architecture with TMS320C40 ER - TY - CONF AU - Lüdeke, H.-P. AU - Maas, Jürgen AU - Fröhleke, Norbert AU - Grotstollen, Horst ID - 30015 T2 - Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting TI - Controller design for resonant converters by automatable techniques ER - TY - GEN AU - Peckhaus, Volker ID - 17761 T2 - History and Philosophy of Logic TI - Arie L. Molendijk, Aus dem Dunklen ins Helle. Wissenschaft und Theologie im Denken von Heinrich Scholz. Mit unveröffentlichten Thesenreihen von Heinrich Scholz und Karl Barth. Rodopi: Amsterdam/Atlanta, GA 1991 (= Amsterdam Studies in Theology; VIII) VL - 14 ER - TY - GEN AU - Peckhaus, Volker ID - 17773 T2 - Modern Logic TI - Ein Jahrhundert Mathematik 1890–1990. Festschrift zum Jubiläum der DMV. hg. v. Gerd Fischer/Friedrich Hirzebruch/Winfried Scharlau/Willi Törnig, Friedrich Vieweg & Sohn: Braunschweig/Wiesbaden 1990 (= Dokumente zur Geschichte der Mathematik; 6) VL - 3 ER - TY - GEN AU - Peckhaus, Volker ED - Hormigon, Mariano ED - Ausejo, Elena ED - Dhombres, Jean ID - 17831 T2 - XIXth International Congress of History of Science. 22–29 August 1993 Zaragoza (Spain). Book of Abstracts Symposia TI - The Development of Ernst Schröder’s Attitude towards Logic [Abstract] VL - Nr. 4.2 ER - TY - GEN AU - Peckhaus, Volker ED - Toepell, Michael ID - 17829 T2 - Fachsektion Geschichte der Mathematik der Deutschen Mathematiker-Vereinigung. Sektionstagung vom 22. bis 26. März 1993 in Wuppertal TI - Leibniz’ ,Mathesis universalis‘ und die Mathematiker des 19. Jahrhunderts [Abstract] ER - TY - THES AU - Heinemann, Lothar ID - 30020 SN - 3-8267-2036-9 TI - Modellbildung von Mehrwicklungstransformatoren bei quasi-stationären Feldstärkeverteilungen ER - TY - THES AU - Lüdeke, Hans-Peter ID - 30019 SN - 978-3-89349-872-7 TI - Untersuchung von Schaltnetzteilen mit kontinuierlichen Resonanzschwingungen ER - TY - CONF AU - Venkataraman, Srikanth AU - Rajski, Janusz AU - Hellebrand, Sybille AU - Tarnick, Steffen ID - 13015 T2 - ACM/IEEE International Conference on Computer Aided Design (ICCAD'93) TI - An Efficient Bist Scheme Based On Reseeding Of Multiple Polynomial Linear Feedback Shift Registers ER - TY - CONF AU - Böcker, Joachim AU - Janning, Jörg AU - Anbuhl, Kay ID - 29988 T2 - EPE’93, Brighton TI - Realization of a High-Dynamic Discrete-Time Controller for PWM Inverter-Fed Induction Motor Drives VL - 4 ER - TY - CHAP AU - Öhlschläger, Claudia ID - 32991 T2 - Rundbrief Frauen in der Literaturwissenschaft 37. Mai 1993: Sprachen der Liebe TI - ́Augen wie Leuchtkäfer ́ - Zur Sprache der Liebe in Mario Vargas Llosas ́ Lob der Stiefmutter ER - TY - JOUR AU - Schnepp, W. AU - Disch, S. AU - Schmidt, Claudia ID - 35389 IS - 3 JF - Liquid Crystals KW - Condensed Matter Physics KW - General Materials Science KW - General Chemistry SN - 0267-8292 TI - 2H NMR study on the lyomesophases of the system hexaethylene glycol dodecyl methyl ether/water Temperature dependence of quadrupole splittings VL - 14 ER - TY - JOUR AU - Rosen, M. E. AU - Rucker, S. P. AU - Schmidt, Claudia AU - Pines, A. ID - 35387 IS - 15 JF - The Journal of Physical Chemistry KW - Physical and Theoretical Chemistry KW - General Engineering SN - 0022-3654 TI - Two-dimensional proton NMR studies of the conformations and orientations of n-alkanes in a liquid-crystal solvent VL - 97 ER - TY - CHAP AU - Maas, Utz AU - Tophinke, Doris ED - Schmidt-Radefeld, Jürgen ED - Harder, Andreas ID - 18430 T2 - Sprachwandel und Sprachgeschichte. FS für Helmut Lüdtke TI - Loser und fester Anschluß. Versuch der Neubewertung einer abgelegten Kategorie ER - TY - CHAP AU - Maas, Utz AU - Frankenbusch, Marita AU - Johannlückens, Ralf AU - Stöwer-Gaus, Ursula AU - Striezel, Marion AU - Tophinke, Doris ED - Bade u. a., Klaus J. ID - 18429 T2 - Damme. Eine Stadt in ihrer Geschichte TI - Sprachentwicklung in Geschichte und Gegenwart ER - TY - CHAP AU - Hagengruber, Ruth Edith ED - Albertini, Tamara ID - 15570 T2 - Verum et Factum. Beiträge zur Geistesgeschichte und Philosophie der Renaissance. Festschrift zum 60. Geburtstag von Stephan Otto TI - Punkt und Mathematik in der Metaphysik des Tommaso Campanella ER - TY - BOOK AU - Kamp, Hermann ID - 34422 TI - Memoria und Selbstdarstellung. Die Stiftungen des burgundischen Kanzlers Rolin VL - 30 ER - TY - CONF AU - Müller, Wolfgang AU - Kleinjohann, Bernd ID - 39578 T2 - Proceedings of the Seventh Annual Database Symposium TI - Tight Integration and Synchronization of Distributed Graphical Applications ER - TY - JOUR AU - Kitzerow, Heinz-Siegfried AU - Crooker, P. P. ID - 40003 IS - 1 JF - Liquid Crystals KW - Condensed Matter Physics KW - General Materials Science KW - General Chemistry SN - 0267-8292 TI - Electric field effects on the droplet structure in polymer dispersed cholesteric liquid crystals VL - 13 ER - TY - JOUR AU - Kitzerow, Heinz-Siegfried AU - Schmid, H. AU - Ranft, A. AU - Heppke, G. AU - Hikmet, R. A. M. AU - Lub, J. ID - 40005 IS - 3 JF - Liquid Crystals KW - Condensed Matter Physics KW - General Materials Science KW - General Chemistry SN - 0267-8292 TI - Observation of blue phases in chiral networks VL - 14 ER - TY - CONF AU - Müller, Wolfgang ID - 39580 T2 - Proc. of the 1st Asian Pacific Conference on Hardware Description Languages, Standards and Applications TI - Approaching the Denotational Semantics of Behavioral VHDL Descriptions ER - TY - CONF AU - Müller, Wolfgang AU - Lehrenfeld, Georg AU - Wiechers, N. ID - 39579 T2 - Proceedings of the 3nd EXPRESS User's Group Conference TI - Parallel Validation of STEP Files ER - TY - JOUR AU - Dolganov, V. K. AU - Lourie, O. R. AU - Heppke, G. AU - Kitzerow, Heinz-Siegfried ID - 40074 IS - 7 JF - Journal de Physique II KW - Physics and Astronomy (miscellaneous) KW - General Engineering KW - Atomic and Molecular Physics KW - and Optics SN - 1155-4312 TI - Anomalies of the temperature dependence of electrostriction in blue phases VL - 3 ER - TY - JOUR AU - Kitzerow, Heinz-Siegfried AU - Crooker, P. P. ID - 40071 IS - 5 JF - Journal de Physique II KW - Physics and Astronomy (miscellaneous) KW - General Engineering KW - Atomic and Molecular Physics KW - and Optics SN - 1155-4312 TI - UV-cured cholesteric polymer-dispersed liquid crystal display VL - 3 ER - TY - JOUR AU - Lasser, R. AU - Rösler, Margit ID - 40216 IS - 5 JF - Archiv der Mathematik KW - General Mathematics SN - 0003-889X TI - A note on property (T) of orthogonal polynomials VL - 60 ER - TY - CONF AU - Molsen, H. AU - Bardon, R. AU - Kitzerow, Heinz-Siegfried ID - 40516 T2 - SID Conference Proceedings, 13th International Display Research Conference TI - Electrooptics of Polymer-Dispersed Ferroelectric Liquid Crystals ER - TY - JOUR AU - EBBERG, A AU - Noé, Reinhold AU - STOLL, L AU - SCHIMPE, R ID - 38496 IS - 5-6 JF - JOURNAL OF LIGHTWAVE TECHNOLOGY SN - 0733-8724 TI - A COHERENT OFDM SWITCHING-SYSTEM FOR FLEXIBLE OPTICAL NETWORK CONFIGURATION VL - 11 ER - TY - JOUR AU - Heppke, G. AU - Kitzerow, Heinz-Siegfried AU - Molsen, H. ID - 40327 IS - 1 JF - Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals KW - Condensed Matter Physics SN - 1058-725X TI - Electroclinic Effect in a Polymer-Dispersed Ferroelectric Liquid Crystal VL - 237 ER - TY - JOUR AU - Krüerke, D. AU - Kitzerow, Heinz-Siegfried AU - Heppke, G. AU - Vill, V. ID - 40324 IS - 10 JF - Berichte der Bunsengesellschaft für physikalische Chemie KW - General Chemical Engineering SN - 0005-9021 TI - First Observation of Selective Reflection and Blue Phases in Chiral Discotic Liquid Crystals VL - 97 ER - TY - JOUR AU - Baena, Maria J. AU - Buey, Julio AU - Espinet, Pablo AU - Kitzerow, Heinz-Siegfried AU - Heppke, Gerd ID - 40326 IS - 8 JF - Angewandte Chemie International Edition in English KW - General Chemistry KW - Catalysis SN - 0570-0833 TI - Metallomesogens with a Cholesteric Mesophase VL - 32 ER - TY - CONF AU - Brab, E. AU - Hilleringmann, Ulrich AU - Schumacher, K. ID - 39909 T2 - ESSCIRC ’93: Nineteenth European Solid-State Circuits Conference TI - Monolithic System Integration of Optical Devices, Photodetectors and Analog Transimpedance CMOS Amplifiers VL - 1 ER - TY - CONF AU - Schonstein, I. AU - Muller, J. AU - Hilleringmann, Ulrich AU - Goser, K. ID - 39910 T2 - ESSDERC ’93: 23rd European solid State Device Research Conference TI - Hot Carrier Monitoring in NMOS Transistors by Visible Light Emission ER - TY - CONF AU - Hilleringmann, Ulrich AU - Adam, S AU - Goser, K ID - 39913 T2 - ESSDtRC’93 TI - Micromechanic pressure sensors with optical readout and CMOS-preamplifiers on one silicon chip: Processing and first results ER - TY - JOUR AB - We present subpicosecond time-resolved four-wave-mixing studies on GaAs/AlAs short-period superlattices having different miniband widths. Photon echoes are observed as a consequence of the inhomogeneous broadening of the excitonic resonance. In addition, the photon-echo signal exhibits periodic modulations as a function of the time delay between the excitation laser pulses. Free excitons and excitons bound to neutral acceptors are identified as the underlying three-level system leading to the observed photon-echo quantum beats. From the beat period we can directly infer the dissociation energy of the bound exciton. In accordance with theory, we find that the dissociation energy decreases with increasing miniband width, i.e., when the excitons become less confined. In addition, we find that the dephasing rate of bound excitons is about one order of magnitude less than that of free excitons and is mainly determined by energy relaxation. AU - Meier, Torsten AU - Koch, M. AU - Weber, D. AU - Feldmann, J. AU - Göbel, E.O. AU - Schulze, A. AU - Thomas, P. AU - Schmitt-Rink, S. AU - Ploog, K. ID - 43449 IS - 3 JF - Physical Review B TI - Subpicosecond photon-echo spectroscopy on GaAs/AlAs short-period superlattices VL - 47 ER - TY - CHAP AB - Femtosecond nonlinear laser spectroscopy is applied to study the dynamics of coherent optical excitations in semiconductors. In particular, beat phenomena of excitonic excitations in quantum wells and superlattice structures will be considered. We will demonstrate that four wave mixing experiments with time resolved detection of the nonlinear signal are able to distinguish between quantum beats and polarization interference. In addition, we report for a GaAs/AlAs superlattice the observation of quantum beats in the photon echo signal. The occurence of these beats is attributed to the simultaneous excitation of bound and localized excitons. AU - Meier, Torsten AU - Göbel, E.O. AU - Koch, M. AU - Feldmann, J. AU - von Plessen, G. AU - Schulze, A. AU - Thomas, P. AU - Schmitt-Rink, S. AU - Köhler, K. AU - Ploog, K. ED - Lookwood, D. ED - Pinczuk, A. ID - 43442 SN - 978-94-010-4845-3 T2 - Optical Phenomena in Semiconductor Structures of Reduced Dimension TI - Time resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures ER - TY - JOUR AB - We report on the coherent dynamics of excitonic wave packets observed in transient four-wave mixing experiments on strained InGaAs/GaAs quantum-well structures. The excitonic noneigenstates are created by using laser pulses shorter than the electron round trip time within the exciton orbital. A characteristic temporal modulation of the diffracted signal is observed, which resembles the coherent dynamics of an electron wave packet in a hydrogen atom expected for the case of a simultaneous excitation of all bound and the lowest continuum states. AU - Meier, Torsten AU - Feldmann, J. AU - von Plessen, G. AU - Koch, M. AU - Göbel, E.O. AU - Thomas, P. AU - Bacher, G. AU - Hartmann, C. AU - Schweizer, H. AU - Schäfer, W. AU - Nickel, H. ID - 43448 IS - 20 JF - Physical review letters TI - Coherent Dynamics of Excitonic Wave Packets VL - 70 ER - TY - JOUR AB - Exciton coupling is studied for double quantum wells, which are separated by thick barriers. Results are presented for the linear optical spectrum, stationary and transient luminescence as well as four-wave-mixing signals. Additionally, coherent and incoherent transport through the barrier is considered AU - Meier, Torsten AU - Batsch, M. AU - Thomas, P. AU - Lindberg, M. AU - Koch, S.W. AU - Shah, J. ID - 43447 IS - 16 JF - Physical Review B TI - Dipole-dipole coupling of excitons in double quantum wells VL - 48 ER - TY - GEN AU - Schroeter-Wittke, Harald ID - 43510 T2 - Der Evangelische Erzieher TI - Schalom Ben-Chorin: Ich lege meine Hand auf meinen Mund. Meditation zu Johannes Brahms "Ein Deutsches Requiem" und Arnold Schönbergs "Ein Überlebender aus Warschau" VL - 45 ER - TY - JOUR AU - Schroeter-Wittke, Harald ID - 43508 IS - 3-4 JF - Forschungsjournal Neue Soziale Bewegungen TI - Eccelsia ludens. Ein Versuch über den Deutschen Evangelischen Kirchentag VL - 6 ER - TY - CHAP AU - Schroeter-Wittke, Harald ED - Domay, Erhard ID - 43509 T2 - Gottesdienstpraxis. Serie A. III. Perikopenreihe Band 2 TI - Christi Himmelfahrt. Predigttext: 1. Könige 8,22-24.26-28 ER - TY - CHAP AU - Schroeter-Wittke, Harald AU - Wicke, Berthold ED - Koerrenz, Ralf ED - Remy, Jochen ID - 43507 T2 - Mit Liedern predigen. Theorie und Praxis der Liedpredigt TI - Wir sind bei Gott gelitten - Ein Passionsgottesdiernst über den Choral "O Haupt voll Blut und Wunden" und seine Melodie ER - TY - THES AU - Schroeter-Wittke, Harald ID - 43505 SN - 3-17-012556-7 TI - Kirchentag als vor-läufige Kirche. Der Kirchentag als eine besondere Gestalt des Christseins zwischen kirche und Welt VL - 13 ER -