TY - GEN
AU - Hellebrand, Sybille
AU - Wunderlich, Hans-Joachim
ID - 13084
KW - WORKSHOP
TI - Ein Verfahren zur testfreundlichen Steuerwerkssynthese
ER -
TY - GEN
AU - Hellebrand, Sybille
AU - Paulo Teixeira, Joao
AU - Wunderlich, Hans-Joachim
ID - 13085
KW - WORKSHOP
TI - Synthesis for Testability - the ARCHIMEDES Approach
ER -
TY - CONF
AU - Platzner, Marco
AU - Steger, Christian
AU - Weiss, Reinhold
ID - 13468
T2 - Proceedings of the 7th Mediterranean Electrotechnical Conference
TI - Experimental Evaluation of Multi-DSP Architectures in High Performance Applications
ER -
TY - JOUR
AU - Bechstedt, F
AU - Schmidt, Wolf Gero
AU - Wenzien, B
ID - 13853
IS - 5
JF - Europhysics Letters (EPL)
SN - 0295-5075
TI - Energetics and Structure of Ordered Sb Overlayers and Sb Clusters on GaAs(110) Probed by Ab Initio Calculations
VL - 25
ER -
TY - JOUR
AU - Schmidt, Wolf Gero
AU - Srivastava, GP
ID - 13854
IS - 4
JF - Solid State Communications
SN - 0038-1098
TI - First principles calculations of interface phonons of an Epitaxial Sb monolayer on GaAs(110) and InP(110)
VL - 89
ER -
TY - JOUR
AU - Schmidt, Wolf Gero
AU - Wenzien, Bernd
AU - Bechstedt, Friedhelm
ID - 13855
IS - Part A
JF - Surface Science
SN - 0039-6028
TI - Coverage-dependent bonding of Sb on GaAs (110)
VL - 307-309
ER -
TY - JOUR
AU - Schmidt, Wolf Gero
AU - Wenzien, B.
AU - Bechstedt, F.
ID - 13856
IS - 7
JF - Physical Review B
SN - 0163-1829
TI - Chemisorption of antimony on GaAs(110)
VL - 49
ER -
TY - CONF
AU - Sun, J.
AU - Grotstollen, I.
ID - 30025
T2 - Proceedings of IECON'94 - 20th Annual Conference of IEEE Industrial Electronics
TI - Pulsewidth modulation based on real-time solution of algebraic harmonic elimination equations
ER -
TY - CONF
AU - Ruff, M.
AU - Bunte, A.
AU - Grotstollen, H.
ID - 30021
T2 - Proceedings of 1994 IEEE Industry Applications Society Annual Meeting
TI - A new self-commissioning scheme for an asynchronous motor drive system
ER -
TY - CONF
AU - Sun, J.
AU - Beineke, S.
AU - Grotstollen, H.
ID - 30027
T2 - Proceedings of 1994 Power Electronics Specialist Conference - PESC'94
TI - DSP-based real-time harmonic elimination of PWM inverters
ER -
TY - CONF
AU - Heinemann, L.
AU - Schulze, R.
AU - Wallmeier, P.
AU - Grotstollen, H.
ID - 30026
T2 - Proceedings of 1994 Power Electronics Specialist Conference - PESC'94
TI - Modeling of high frequency inductors
ER -
TY - CONF
AU - Fröhleke, N.
AU - Becker, B.
AU - Grotstollen, H.
AU - Magaritis, B.
AU - Vollmer, L.
ID - 30023
T2 - Proceedings of 1994 IEEE Industry Applications Society Annual Meeting
TI - Analysis and design of isolated high power boost topologies and simulations with quasi-static and quasi-stationary transformer models
ER -
TY - CONF
AU - Fröhleke, N.
AU - Mende, R.
AU - Grotstollen, H.
AU - Margaritis, B.
AU - Vollmer, L.
ID - 30024
T2 - Proceedings of IECON'94 - 20th Annual Conference of IEEE Industrial Electronics
TI - Isolated boost full bridge topology suitable for high power and power factor correction
ER -
TY - CONF
AU - Fröhleke, N.
AU - Becker, B.
AU - Wallmeier, P.
AU - Grotstollen, H.
ID - 30022
T2 - Proceedings of 1994 IEEE Industry Applications Society Annual Meeting
TI - Computer aided optimization of multi-winding transformers for SMPS considering HF-effects
ER -
TY - JOUR
AB - Abstract: Historia Mathematica 22 (1995), #22.2.62 (I. Anellis).
Rezensionen: Zbl. Math. 812.01012 (I. Grattan-Guinness); MR 95m:03002 (M. Guillaume).
AU - Peckhaus, Volker
ID - 17489
JF - Modern Logic
TI - Wozu Algebra der Logik? Ernst Schröders Suche nach einer universalen Theorie der Verknüpfungen
VL - 4
ER -
TY - GEN
AU - Peckhaus, Volker
ID - 17774
T2 - Modern Logic
TI - Erik Heijerman/H. Walter Schmitz (eds.), Significs, Mathematics and Semiotics. The Signific Movement in the Netherlands. Proceedings of the International Conference Bonn 19–21 November 1986. Nodus Publicationen: Münster 1991 (= Materialien zur Geschichte der Sprachwissenschaft und der Semiotik; 5)
VL - 4
ER -
TY - JOUR
AB - (Abdruck von “Alexander Rüstow's Thesis”, Beitrag für russell-l@mcmail.cis.mcmaster am 17. Juni 1994)
AU - Peckhaus, Volker
ID - 17841
IS - September-Oktober 1994
JF - History of Logic Newsletter
TI - Rüstow’s Thesis on Russell’s Paradox
VL - 13
ER -
TY - CHAP
AU - Peckhaus, Volker
ID - 17837
T2 - Abstract of Papers Presented to the American Mathematical Society
TI - The Axiomatic Method and Ernst Schröder’s Algebraic Approach to Logic [Abstract]
VL - 15, Nr. 5 (August 1994)
ER -
TY - CHAP
AU - Peckhaus, Volker
ID - 17834
T2 - Modern Logic Calendar 1994
TI - Ernst Schröder
ER -
TY - GEN
AB - [Abdruck siehe 7.13, revidierte Fassung 4.18]
AU - Peckhaus, Volker
ID - 17896
TI - Alexander Rüstow's Thesis, Beitrag für russell-l@mcmail.cis.mcmaster am 17. Juni 1994 [Abdruck: Rüstow’s Thesis on Russell’s Paradox, History of Logic Newsletter, Nr. 13 (September–Oktober 1994), 2–3] [revidierte Fassung: Rüstow’s Thesis on Russell’s Paradox”, Modern Logic 5 (1995), 167–169]
ER -
TY - THES
AU - Josef Wiesing, Josef
ID - 30850
TI - Betrieb der feldorientierten geregelten Asynchronmaschine im Bereich oberhalb der Nenndrehzahl
ER -
TY - CONF
AU - Hagengruber, Ruth Edith
ED - Heinekamp, Albert
ED - Hein, Isolde
ID - 15509
T2 - Leibniz und Europa
TI - Parallelen um den Punkt zwischen Campanella und Leibniz
VL - 1
ER -
TY - THES
AU - Hagengruber, Ruth Edith
ID - 15497
SN - 3883453331
TI - Tommaso Campanella. Eine Philosophie der Ähnlichkeit
ER -
TY - GEN
AU - Süßmann, Johannes
ED - Kerber, Harald
ED - Schmieder, Arnold
ID - 34939
SN - 3-499-55542-5
T2 - Spezielle Soziologien. Problemfelder, Forschungsbereiche, Anwendungsorientierungen
TI - [Art.] Kunstsoziologie
VL - 542
ER -
TY - CONF
AU - Hellebrand, Sybille
AU - Wunderlich, Hans-Joachim
ID - 13014
T2 - ACM/IEEE International Conference on Computer-Aided Design (ICCAD'94)
TI - An Efficient Procedure for the Synthesis of Fast Self-Testable Controller Structures
ER -
TY - CONF
AU - Hellebrand, Sybille
AU - Wunderlich, Hans-Joachim
ID - 13059
T2 - Tagungsband der GI/GME/ITG-Fachtagung \& Rechnergestützter Entwurf und Architektur mikroelektronischer Systeme
TI - Synthese schneller selbsttestbarer Steuerwerke
ER -
TY - CONF
AU - Hellebrand, Sybille
AU - Wunderlich, Hans-Joachim
ID - 13013
T2 - European Design and Test Conference (EDAC/ETC/EUROASIC)
TI - Synthesis of Self-Testable Controllers
ER -
TY - CHAP
AU - van Laak, Lothar
AU - Bartels, Kathrin
AU - Brenig, Claudia
AU - Prudlo, Marion
ID - 31094
T2 - Hölderlin-Jahrbuch 29
TI - Michael Hamburgers Übersetzungen und einige neue Tendenzen in der englisch-sprachigen Hölderlin-Rezeption
ER -
TY - BOOK
AU - Scharlau, Ingrid
ID - 29079
TI - Cartesianische Grundlagen der wissenschaftlichen Psychologie
ER -
TY - CHAP
AU - Öhlschläger, Claudia
ED - Keck, Annette
ED - Schmidt, Dietmar
ID - 32990
T2 - AUTO(R)EROTIK. Gegenstandslose Liebe als literarisches Projekt
TI - "In den Wald gehen, tief in den Wald hinein" Autoerotische Phantasmen männlicher Autorschaft in Thomas Bernhards Holzfällen. Eine Erregung
ER -
TY - CHAP
AU - Öhlschläger, Claudia
ID - 32992
T2 - Rundbrief Frauen in der Literaturwissenschaft 43: Postfeminismus. Dez. 1994
TI - Maskerade. Bericht über das 3. Symposium des Münchener Graduiertenkollegs Geschlechterdifferenz & Literatur. Ludwig- Maximilians-Universität München (27.-29.10.1994)
ER -
TY - CHAP
AU - Öhlschläger, Claudia
AU - Schmidt, Dietmar
ID - 32989
T2 - Hofmannsthal-Jahrbuch 2
TI - "Weibsfauna". Zur Koinzidenz von Tiergeschichte und Pornographie am Beispiel von Bambi und Josefine Mutzenbacher
ER -
TY - JOUR
AU - Kratzat, Krystyna
AU - Schmidt, Claudia
AU - Finkelmann, Heino
ID - 35384
IS - 1
JF - Journal of Colloid and Interface Science
KW - Colloid and Surface Chemistry
KW - Surfaces
KW - Coatings and Films
KW - Biomaterials
KW - Electronic
KW - Optical and Magnetic Materials
SN - 0021-9797
TI - A Doubly Branched Nonionic Oligooxyethylene V-Amphiphile: Effect of Molecular Geometry on Liquid-Crystalline Phase Behavior, 3
VL - 163
ER -
TY - JOUR
AU - Grabowski, D. A.
AU - Schmidt, Claudia
ID - 35386
IS - 9
JF - Macromolecules
KW - Materials Chemistry
KW - Inorganic Chemistry
KW - Polymers and Plastics
KW - Organic Chemistry
SN - 0024-9297
TI - Simultaneous Measurement of Shear Viscosity and Director Orientation of a Side-Chain Liquid-Crystalline Polymer by Rheo-NMR
VL - 27
ER -
TY - JOUR
AU - Disch, Stefan
AU - Schmidt, Claudia
AU - Finkelmann, Heino
ID - 35385
IS - 4
JF - Macromolecular Rapid Communications
KW - Materials Chemistry
KW - Polymers and Plastics
KW - Organic Chemistry
SN - 1022-1336
TI - Nematic elastomers beyond the critical point
VL - 15
ER -
TY - JOUR
AU - Schnepp, Werner
AU - Schmidt, Claudia
ID - 35383
IS - 2
JF - Berichte der Bunsengesellschaft für physikalische Chemie
KW - General Chemical Engineering
SN - 0005-9021
TI - Conformational order of amphiphilic chain molecules in lyotropic liquid-crystalline phases
VL - 98
ER -
TY - BOOK
ED - Tophinke, Doris
ID - 18433
TI - Sprachbiographie und Sprachstörung. Fallstudien zur Textproduktion bei hirnorganischen Erkrankungen
ER -
TY - CHAP
AU - Hagengruber, Ruth Edith
ED - Gómez Pin, Victor
ID - 15610
T2 - Actas del primer Congreso Internacional de Ontología : categorías e inteligibilidad global : el proyecto ontológico a través de la reflexión contemporánea
TI - Die Theorie des Punktes aus der Philosophie der Ähnlichkeit bei Tommaso Campanella
ER -
TY - CHAP
AU - Hagengruber, Ruth Edith
ED - Fritscher, Bernhard
ED - Brey, Gerhard
ID - 15608
T2 - Cosmographica et Geographica. Algorismus. Studien zur Geschichte der Mathematik und der Naturwissenschaften
TI - Platons "Timaios", eine Anleitung zur wissenschaftlichen Hypothesenbildung?
VL - 13
ER -
TY - JOUR
AU - Kamp, Hermann
ID - 36179
JF - Historische Zeitschrift
TI - Konflikte im hohen Norden. Ein Blick auf einige Neuerscheinungen zur isländischen und norwegischen Geschichte im Mittelalter
VL - 230
ER -
TY - BOOK
AU - Bigga, Regine
AU - Braun, F.
AU - Hoffmann, L.
ID - 27958
TI - Die Gleichstellung der Geschlechter im Lehrplan. Anregungen für Schule und Unterricht.
ER -
TY - BOOK
AU - Tornieporth, G.
AU - Bigga, Regine
ID - 27961
TI - Erwerbsarbeit - Hausarbeit. Strukturwandel der Arbeit als Herausforderung an das Lernfeld Arbeitslehre
ER -
TY - CHAP
AU - Bigga, Regine
ED - Tornieporth, Gerda
ED - Bigga, Regine
ID - 37582
T2 - Erwerbsarbeit - Hausarbeit. Strukturwandel der Arbeit als Herausforderung an das Lernfeld der Arbeitslehre
TI - Ergebnisse aus dem Projekt Mädchen & junge Frauen in der Arbeitswelt
ER -
TY - CONF
AU - Felser, W.
AU - Müller, Wolfgang
ID - 39557
TI - EXPRESS-P - Eine Erweiterung von ISO 10303-11 zur Prozessmodellierung
ER -
TY - CONF
AB - In this paper we present a novel approach to the layout problem of dimensional graph based dia grams We introduce a framework for e ciently solving constrained layout problems encompassing geometrical and graph based algorithms especially dedicated to the generation of diagrams These concepts as well as the aesthetics for the read ability of diagrams are presented by introducing FADE FADE is a user parametrizable frame work for the generation of EXPRESS G diagrams Our present implementation is discussed consider ing extensions to other classes of graphs and layout problems Additionally competitive approaches in this domain and their limitations are critically reviewed.
AU - Eikerling, Josef
AU - Müller, Wolfgang
ID - 39560
T2 - Proceedings of the 17th Annual Computer Science Conference
TI - FADE: A Layout Facility for Graph-Based Diagrams
ER -
TY - CONF
AU - Hyhuis, D.
AU - Müller, Wolfgang
ID - 39565
T2 - Proceedings of the 2nd International Conference on Concurrent Engineering & Electronic Design Automation (CEEDA94)
TI - Implementing Simultaneous Design: A Case Study
ER -
TY - CONF
AU - Müller, Wolfgang
AU - Lehrenfeld, Georg
AU - Wiechers, N.
ID - 39577
TI - Implementierung eines parallelen Validierungswerkzeugs für STEP-Produktdaten unter PVM
ER -
TY - CONF
AU - Börger, Egon
AU - Glässer, Uwe
AU - Müller, Wolfgang
ID - 39575
T2 - Proceedings of EURO-DAC'94/EURO-VHDL'94
TI - The Semantics of Behavioral VHDL'93 Descriptions
ER -
TY - JOUR
AU - Behrens, Ulrike
AU - Kitzerow, Heinz-Siegfried
AU - Chilaya, Gouram
ID - 40006
IS - 4
JF - Liquid Crystals
KW - Condensed Matter Physics
KW - General Materials Science
KW - General Chemistry
SN - 0267-8292
TI - Electro-optic effect in polymer-dispersed cholesteric liquid crystals with medium chirality
VL - 17
ER -
TY - GEN
AU - Grotjahn, Rebecca
ED - Böttcher, Dirk
ED - Guratzsch, Herwig
ED - Mlynek, Klaus
ID - 37871
SN - 978-3934920538
T2 - Hannover Kunst- und Kulturlexikon
TI - Stadtgeschichte in Daten – Musik
ER -
TY - CONF
AU - Lehrenfeld, Georg
AU - Müller, Wolfgang
AU - Wiechers, N.
ID - 39554
TI - Ein paralleles Framework fuer die Validierung von STEP-Produktdaten
ER -
TY - CONF
AU - Lehrenfeld, Georg
AU - Müller, Wolfgang
AU - Wiechers, N.
ID - 39566
T2 - Proceedings of the 2nd International Conference on Concurrent Engineering & Electronic Design Automation (CEEDA94)
TI - Parallel Validation of STEP Files
ER -
TY - CONF
AU - Lehrenfeld, Georg
AU - Müller, Wolfgang
ID - 39569
TI - Computational Model of a Logical Visual Programming Language
ER -
TY - CONF
AB - The upcoming ISO standard EXPRESS has been de- #ned as a data speci#cation language for the use within STEP. EXPRESS supports the modeling of static structural relationships and consistency constraints whereas the applicability of EXPRESS for the modeling of behavior is very limited. Thus, at present there is an ongoing discussion by which means EXPRESS should be extended with.
AU - Felser, Winfried
AU - Müller, Wolfgang
ID - 39572
T2 - Proceedings of the 1994 ASME Computers in Engineering Conference
TI - EXPRESS-P - Extending EXPRESS for Process Modeling and Monitoring
ER -
TY - JOUR
AU - REHAGE, M
AU - Noé, Reinhold
ID - 38463
IS - 14
JF - ELECTRONICS LETTERS
SN - 0013-5194
TI - WAVELENGTH-SELECTIVE POLARIZATION ANALYZER WITH INTEGRATED TI LINBO3 ACOUSTOOPTICAL TE-TM CONVERTER
VL - 30
ER -
TY - JOUR
AU - Molsen, Henning
AU - Kitzerow, Heinz-Siegfried
ID - 40322
IS - 2
JF - Journal of Applied Physics
KW - General Physics and Astronomy
SN - 0021-8979
TI - Bistability in polymer‐dispersed ferroelectric liquid crystals
VL - 75
ER -
TY - CONF
AU - Crooker, Peter P.
AU - Kitzerow, Heinz-Siegfried
AU - Xu, F.
ED - Shashidhar, Ranganathan
ID - 40316
SN - 0277-786X
T2 - Liquid Crystal Materials, Devices, and Applications III
TI - Polymer-dispersed cholesteric liquid crystals
ER -
TY - JOUR
AU - Kitzerow, Heinz-Siegfried
ID - 40325
IS - 1
JF - Liquid Crystals
KW - Condensed Matter Physics
KW - General Materials Science
KW - General Chemistry
SN - 0267-8292
TI - Polymer-dispersed liquid crystals From the nematic curvilinear aligned phase to ferroelectric films
VL - 16
ER -
TY - JOUR
AU - Xu, F.
AU - Kitzerow, Heinz-Siegfried
AU - Crooker, P. P.
ID - 40323
IS - 4
JF - Physical Review E
SN - 1063-651X
TI - Director configurations of nematic-liquid-crystal droplets: Negative dielectric anisotropy and parallel surface anchoring
VL - 49
ER -
TY - JOUR
AB -
A novel technique to produce planar and homeotropic alignment of smectic liquid crystals is presented. The technique is based on producing an anisotropic polymer network in the bulk by photo-polymerizing a mixture of photoresist material and liquid crystal by linearly polarized UV-light. Both uniform planar alignment and homeotropic alignment can be obtained depending on the curing conditions. In the case of planar alignment, the orientation of liquid crystal molecules is governed by the direction of the polarization vector of the UV-light, thus making it possible to produce a defined azimuthal orientation of the liquid crystal director. This technique obviates the need to give any previous treatment to the bounding substrates.
AU - Jain, Sukhmal C.
AU - Kitzerow, Heinz-Siegfried
ID - 40317
IS - 5A
JF - Japanese Journal of Applied Physics
KW - General Physics and Astronomy
KW - General Engineering
SN - 0021-4922
TI - A New Method to Align Smectic Liquid Crystals by Photo-Polymerization
VL - 33
ER -
TY - JOUR
AU - Behrens, Ulrike
AU - Kitzerow, Heinz-Siegfried
ID - 40321
IS - 8
JF - Polymers for Advanced Technologies
KW - Polymers and Plastics
SN - 1042-7147
TI - Utility of a liquid crystalline diacrylate for bistable switching cholesteric gel displays
VL - 5
ER -
TY - JOUR
AU - Jain, Sukhmal C.
AU - Kitzerow, Heinz-Siegfried
ID - 40318
IS - 22
JF - Applied Physics Letters
KW - Physics and Astronomy (miscellaneous)
SN - 0003-6951
TI - Bulk‐induced alignment of nematic liquid crystals by photopolymerization
VL - 64
ER -
TY - JOUR
AU - Herzog, Bernd
AU - Huber, Klaus
AU - Rennie, Adrian R.
ID - 42055
IS - 2
JF - Journal of Colloid and Interface Science
KW - Colloid and Surface Chemistry
KW - Surfaces
KW - Coatings and Films
KW - Biomaterials
KW - Electronic
KW - Optical and Magnetic Materials
SN - 0021-9797
TI - Characterization of Worm-like Micelles Containing Solubilized Dye-Molecules by Light Scattering Techniques
VL - 164
ER -
TY - JOUR
AU - Maloney, Colette
AU - Huber, Klaus
ID - 42054
IS - 2
JF - Journal of Colloid and Interface Science
KW - Colloid and Surface Chemistry
KW - Surfaces
KW - Coatings and Films
KW - Biomaterials
KW - Electronic
KW - Optical and Magnetic Materials
SN - 0021-9797
TI - Mixtures of Polyacrylic Acid and Nonionic Surfactants at the Water/Air Interface
VL - 164
ER -
TY - CONF
AU - Hilleringmann, Ulrich
AU - Adams, S.
AU - Goser, K.
ID - 39908
T2 - ESSDERC ’94: 24th European Solid State Device Research Conference
TI - Micromechanic Pressure Sensors with Optical Readout and CMOS-Amplifiers on Silicon
ER -
TY - JOUR
AU - Schroeter-Wittke, Harald
ID - 43511
JF - Der Evangelische Erzieher
TI - Zwischen Fest und Alltag. Symboldidaktische Anmerkungen zur Gestaltung christlicher Religion in der Primarstufe
VL - 46
ER -
TY - CHAP
AU - Schroeter-Wittke, Harald
ED - Domay, Erhard
ID - 43514
T2 - Gottesdienstpraxis. Serie A. IV. Perikopenreihe Band 2
TI - 4. Sonntag nach Trinitatis. Predigttext: 1. Petrus 3,8-15a(15b-17)
ER -
TY - JOUR
AU - Schroeter-Wittke, Harald
ID - 43513
JF - Der Evangelische Erzieher
TI - In Bibel steckt Musik. Eine Er-Hörung von 1 Kön 19
VL - 46
ER -
TY - GEN
AU - Schroeter-Wittke, Harald
ID - 43515
T2 - Der Evangelische Erzieher
TI - Ingrid Schoberth: Erinnerung als Praxis des Glaubens
VL - 46
ER -
TY - JOUR
AU - Schroeter-Wittke, Harald
ID - 43512
JF - Der Evangelische Erzieher
TI - Friedhof der Vergessenen
VL - 46
ER -
TY - JOUR
AB - We study the critical field for the formation of Wannier-Stark ladders and Bloch oscillations in
GaAs/AlxGa1−xAs superlattices at low temperatures. From the results of photocurrent and transient four-wave mixing experiments, we conclude that the critical field is higher for superlattices with wide minibands than for superlattices, with narrow minibands. The explanation for this dependence is that intraminiband scattering due to LO-phonon emission is excluded in minibands narrower than the LO-phonon energy.
AU - Meier, Torsten
AU - von Plessen, G.
AU - Feldmann, J.
AU - Göbel, E.O.
AU - Thomas, P.
AU - Goosen, K.W.
AU - Kuo, J.M.
AU - Kopf, R.F.
ID - 43593
IS - 19
JF - Physical Review B
TI - Influence of scattering on the formation of Wannier-Stark ladders and Bloch oscillations in semiconductor superlattices
VL - 49
ER -
TY - JOUR
AB - We present a microscopic analysis of coherent effects induced by electric fields in photoexcited semiconductors in the presence of the Coulomb interaction. Both the terahertz emission and four-wave-mixing signals arising from Bloch oscillations in a semiconductor superlattice are computed consistently. It is predicted that Bloch oscillations should be observable also for miniband widths on the order of the exciton binding energy.
AU - Meier, Torsten
AU - von Plessen, G.
AU - Thomas, P.
AU - Koch, S.W.
ID - 43592
IS - 6
JF - Physical Review Letters
TI - Coherent electric-field effects in semiconductors
VL - 73
ER -
TY - CONF
AB - The coherent dynamics of exciton wavepackets in (GaIn)As/GaAs as well as (GaIn)As/Ga(PAs) multiple quantum well structures is studied by means of transient four-wave mixing (FWM) experiments. The wavepackets are generated by simultaneous excitation of several exciton transitions with laser pulses of about 100 fs duration. The time-integrated FWM signals exhibit a pronounced modulation superimposed on the overall decay which can be attributed to the quantum interference of the different eigenstates. In the time-resolved FWM signals this interference is not present, reflecting the interplay between many-body Coulomb effects and inhomogeneous broadening. This experimental technique is then employed to extract the exciton binding energies in pseudomorphic symmetrically strained (GaIn)As/GaIPAs) with various In contents.
AU - Meier, Torsten
AU - Koch, M.
AU - Feldmann, J.
AU - Göbel, E.O.
AU - Jahnke, F.
AU - Schäfer, W.
AU - Thomas, P.
AU - Koch, S.W.
AU - Nickel, H.
AU - Luttgen, S.
AU - Stolz, W.
ID - 43450
IS - 11S
T2 - Proceedings der 8. International Winterschool on New Developments in Physics
TI - Coherent Dynamics of Exciton Wavepackets in Semiconductor Heterostructures
VL - 9
ER -
TY - CHAP
AB - Since the realization of semiconductor heterostructures vertical transport of electrically injected carriers has been one of the most interesting topics in semiconductor physics. Precise engineering of semiconductor layers and thus electronic energy levels allows the tailoring of transport properties over a wide range and has even led to the invention of semiconductor devices relying on ballistic electron transport. In addition, negative differential resistance (NDR) can be realized by using tunneling diodes containing double-barrier heterostructures or a superlattice structure.5,6 Actually, the proposal of Esaki and Tsu5 to use electronic Bloch oscillations in the miniband of a semiconductor superlattice to realize NDR marked the starting point for the physics and applications of semiconductor heterostructures.
AU - Meier, Torsten
AU - Feldmann, J.
AU - von Plessen, G.
AU - Thomas, P.
AU - Göbel, E.O.
AU - Goosen, K.W.
AU - Miller, D.A.B.
AU - Cunningham, J.E.
ED - Phillips, R.T.
ID - 43598
SN - 978-1-4757-9750-3
T2 - Coherent Optical Interactions in Semiconductors
TI - Vertical transport studied by sub-picosecond four-wave mixing experiments
ER -
TY - CHAP
AB - Transient four-wave mixing (TFWM) experiments have been widely used to study the excitation dynamics of excitons in quantum wells [1]. Recently is has been observed that TFWM signals, especially quantum beats between heavy-hole (hh) and light-hole (lh) excitons, strongly depend on the polarization of the incident laser pulses [2–6]. This dependence is presently being investigated.
AU - Meier, Torsten
AU - Bennhardt, D.
AU - Thomas, P.
AU - Hu, Y.Z.
AU - Binder, R.
AU - Koch, S.W.
ED - Phillips, R.T.
ID - 43597
T2 - Coherent Optical Interactions in Semiconductors
TI - Theory of polarization-dependent four-wave mixing using the optical Bloch equations
ER -
TY - JOUR
AB - A three-pulse degenerate four-wave-mixing experiment and its theoretical analysis reveal contributions of local field and biexciton effects to the nonlinear optical response of the two-dimensional exciton. Quantum beats with a frequency equivalent to the biexciton binding energy appear only for specific polarizations. Polarization-dependent spectrally resolved four-wave mixing shows an additional peak that is separated from the 1s heavy-hole exciton line by the biexciton binding energy. These experimental results are in good agreement with the optical selection rules of the theoretical model, providing evidence for biexcitonic contributions to the four-wave mixing.
AU - Meier, Torsten
AU - Mayer, E.J.
AU - Heuckeroth, V.
AU - Smith, G.O.
AU - Kuhl, J.
AU - Bott, K.
AU - Schulze, A.
AU - Bennhardt, D.
AU - Koch, S.W.
AU - Thomas, P.
AU - Hey, R.
AU - Ploog, K.
ID - 43595
IS - 19
JF - Physical Review B
TI - Evidence of Biexcitonic Contributions to Four-wave-mixing in GaAs Quantum Wells
VL - 50
ER -
TY - JOUR
AB - The effects of disorder and many-body interaction on the four-wave-mixing signal in semiconductor quantum wells are studied experimentally and theoretically. For weakly disordered samples it is shown that the combined influence of Coulomb and disorder effects leads to a characteristic photon-echo signal in time-resolved measurements and to oscillations in the time-integrated signal. Convincing agreement between experiment and theory is demonstrated.
AU - Meier, Torsten
AU - Jahnke, F.
AU - Koch, M.
AU - Feldmann, J.
AU - Schäfer, W.
AU - Thomas, P.
AU - Koch, S.W.
AU - Göbel, E.O.
AU - Nickel, H.
ID - 43594
IS - 11
JF - Physical Review B
TI - Simultaneous influence of disorder and Coulomb interaction on photon echoes in semiconductors
VL - 50
ER -
TY - JOUR
AU - Meier, Torsten
AU - von Plessen, G.
AU - Feldmann, J.
AU - Thomas, P.
AU - Göbel, E.O.
AU - Koch, S.W.
ID - 43596
IS - 12
JF - Optics and Photonics News
TI - Intrinsic perturbations of Bloch oscillations and Wannier Stark ladders in semiconductor superlattices
VL - 5
ER -
TY - CONF
AB - The strong influence of exciton/exciton interaction on the nonlinear optical response of the 2D exciton in GaAs quantum wells has been demonstrated in several recent experimental studies. The theoretical model for the microscopic coupling mechanism is still the subject of controversy, however. In ref. [1], we have presented a model including a density dependent coupling between opposite spin excitons which assumes that the interaction results in a renormalization of the matrix elements, dephasing rates and energies of the transition from the single-exciton state to the two-exciton state with respect to the corresponding quantities for the single exciton transitions. In contrast, Wang et al. claim that all experimental observations are explained by a density induced dephasing rate and that biexciton states play no role [2]. Here we present a new 3-pulse degenerate-four-wave-mixing (DFWM) configuration which is able to differentiate between pure local field effects and biexcitonic contributions to the time-integrated signal. Experiments were performed on an almost homogeneously broadened GaAs/Al0.3Ga0.7As single QW (well width 20 nm, photoluminescence line 0.3 meV, homogenous linewidth 0.15 meV) in the backward reflection geometry. The sample was cooled to 10 K and excited by a sequence of three pulses (1.1 ps duration) with equal intensity, wave vectors 𝑘→1,𝑘→2,𝑘→3
and delays τ12 and τ13 between the second and first and the third and first pulse, respectively. The signal was monitored in the direction 𝑘→𝑠=𝑘→1+𝑘→2−𝑘→3
which provides no signal for the chosen pulse length if local field and renormalization effects are negligible. The peak intensity of the time-integrated DFWM signal has been calculated by solving the optical Bloch for a system of two non-interacting two-level systems (2LS) with opposite circular polarization selection rules (local field effect) and for the renormalized four-level system (4LS) depicted in Fig. 1 which assumes the formation of biexcitons between excitons with opposite spins. The signal strength is proportional to the strength of the local field in the case of the 2LS and to the renormalization for the 4LS. The peak signal intensities expected for pure local field and pure biexction contributions are summarized in the second and third column of Table 1 for eight experimental configurations applying different linear and circularly polarized pulses. The values are normalized to the signal strength predicted for three parallel linearly polarized pulses. Close inspection of the data reveals remarkable differences of the peak amplitude with polarization geometry for the two coupling models.
AU - Meier, Torsten
AU - Kuhl, J.
AU - Mayer, E.J.
AU - Smith, G.O.
AU - Bennhardt, D.
AU - Schulze, A.
AU - Thomas, P.
AU - Hey, R.
AU - Ploog, K.
ID - 44283
T2 - International Conference on Ultrafast Phenomena
TI - Contributions of Bound and Unbound Two-Exciton States to the Nonlinear Optical Response of GaAs Quantum Wells
ER -
TY - CONF
AB - Several recent experimental and theoretical studies have demonstrated the importance of exciton/exciton coupling due to Coulomb interactions for the nonlinear optical response of the 2D exciton in GaAs quantum wells (QWs).1,2 These results imply that multilevel models are required in order to provide a theoretically appropriate description of the nonlinear behavior. Previous application of a renormalized 9-level system has proven successful in describing the third-order response of hh-excitons in GaAs quantum wells.2 We present a comprehensive experimental and theoretical investigation of the polarization selection rules for degenerate- four-wave-mixing (DFWM) and quantum beating of hh and lh transitions in a GaAs QW. Depending on the polarization and temporal sequence of the three pulses simultaneous excitation of the hh and lh transitions generates either quantum beats (QB), no modulation of the signal, or a superposition of QB and polarization interference (PI) effects as proved by spectrally resolved (SR)-DFWM.
AU - Meier, Torsten
AU - Mayer, E.J.
AU - Smith, G.O.
AU - Kuhl, J.
AU - Schulze, A.
AU - Bennhardt, D.
AU - Koch, S.W.
AU - Thomas, P.
AU - Hey, R.
AU - Ploog, K.
ID - 44284
T2 - Proceedings of the 5th European Quantum Electronics Conference
TI - Polarization selection rules for quantum beating between light and heavy holes in GaAs quantum wells
ER -
TY - CONF
AB - Although the importance of exciton/exciton interactions for the nonlinear optical response of GaAs quantum wells (QW) is well established by many experimental observations, the role of biexciton states in these processes is still an open question, even at low excitation densities. Evidence for the formation of biexcitons has been independently derived from pump-probe studies [1], from the density dependence of the photoluminescence (PL) line shape [2] and from signal modulations observed in degenerate-four-wave-mixing (DFWM) with incoherent light pulses [3]. Here, we report on time-resolved DFWM with parallel (PP) and cross-polarized (CP) pulses. Depending on the polarization geometry, the signals reveal strong quantum beats which correspond to the splitting between either the heavy hole (hh) and light hole (lh) exciton or the hh exciton and the biexciton.
AU - Meier, Torsten
AU - Mayer, E.J.
AU - Smith, G.O.
AU - Kuhl, J.
AU - Bennhardt, D.
AU - Schulze, A.
AU - Thomas, P.
AU - Hey, R.
AU - Ploog, K.
ID - 44282
T2 - International Conference on Ultrafast Phenomena
TI - Observation of Biexcitons in Time-Resolved Degenerate-Four-Wave-Mixing on GaAs Quantum Wells
ER -
TY - CONF
AB - We have performed sub-picosecond four-wave mixing experiments on a series of symmetrically strained (GaIn)As/Ga(AsP) multiple quantum wells. We show that these measurements allow a precise determination of exciton binding energies. One of the advantages of this quantum beat method as compared to linear optical methods is that a determination of the exciton binding energy is possible even in the presence of considerable inhomogeneous broadening. In addition, the dependence of the exciton binding energy on the strain in the (GaIn)As quantum well layers suggests that the reduced electron-hole effective mass is not influenced by the increase in strain.
AU - Meier, Torsten
AU - Koch, M.
AU - Stolz, W.
AU - Feldmann, J.
AU - Thomas, P.
AU - Göbel, E.O.
ID - 43600
IS - 3
T2 - Proceedings der 7. International Conference on Superlattices, Microstructures and Microdevices
TI - Determination of excitonic binding energies in symmetrically strained (GaIn)As/Ga(PAs) multiple quantum wells using quantum beat spectroscopy
VL - 15
ER -
TY - CONF
AB - In the absence of scattering mechanisms, a crystal electron subjected to a homogeneous electric field undergoes a periodic motion in both momentum and real space. This oscillatory motion is known as Bloch oscillations (BOs) and has recently been detected in transient four-wave mixing (FWM) and Tera-Hertz emission experiments on semiconductor superlattices. It is generally assumed that the minimum field required for the observation of BOs is controlled by the rate of scattering in the material. However, an experimental verification of this point is still lacking.
AU - Meier, Torsten
AU - von Plessen, G.
AU - Feldmann, J.
AU - Göbel, E.O.
AU - Thomas, P.
AU - Goossen, K.W.
AU - Kuo, J.M.
AU - Kopf, R.F.
ID - 44280
SN - 1-55752-342-8
T2 - International Quantum Electronics Conference
TI - Field-induced dynamics of a wave packet in a wide superlattice miniband
ER -
TY - CONF
AB - The strong nonlinear optical response of the 2D exciton in GaAs quantum wells at relatively low excitation densities has been observed in many experimental studies in accordance with theoretical predictions. In principle, exciton/exciton interaction results in a renormalization of the transition matrix elements, dephasing rates and frequencies of the excitonic states. Wang et al.1 claimed that all experimental results can be explained by a density- induced enhanced dephasing rate. In a previous paper,2 we have suggested a density dependent coupling between opposite spin excitons, which involves all three renormalization phenomena.
AU - Meier, Torsten
AU - Smith, G.O.
AU - Mayer, E.J.
AU - Kuhl, J.
AU - Schulze, A.
AU - Bennhardt, D.
AU - Koch, S.W.
AU - Thomas, P.
AU - Hey, R.
AU - Ploog, K.
ID - 44279
T2 - European Quantum Electronics Conference
TI - Direct verification of the existence of biexcitons in GaAs qauntum wells
ER -
TY - CONF
AB - A proper description of subpicosecond four-wave-mixing (FWM) experiments for excitonic transitions in semiconductor heterostructures must consider the fact that the spectrally broad laser pulses excite not only the 1s bound exciton state but also energetically higher bound exciton states and the lower-lying part of the unbound continuum states. In this paper, we report results of transient and time-resolved FWM-experiments in which such ’excitonic wave packets’ play a crucial role. In addition, a theoretical treatment of the problem based on the solution of the semiconductor Bloch is presented. We show that the time-dependent nonlinear response is determined by an interplay between inhomogeneous broadening and Coulomb interaction.
AU - Meier, Torsten
AU - Koch, M.
AU - Jahnke, F.
AU - Feldmann, J.
AU - Schäfer, W.
AU - Thomas, P.
AU - Koch, S.W.
AU - Göbel, E.O.
AU - Nickel, H.
ID - 44285
TI - Interplay Between Inhomogeneous Broadening and Coulomb Interaction in the Dynamics of Excitonic Wave Packets
ER -
TY - GEN
AU - Tulodziecki, G.
AU - Herzig, Bardo
ID - 45230
TI - Hinweise zur Statistik. Arbeitspapier
ER -
TY - CHAP
AU - Schuster, Britt-Marie
ED - Brandt , Gisela
ID - 31299
KW - Sprachliche Formelhaftigkeit/-Musterhaftigkeit
T2 - Bausteine zu einer Geschichte des weiblichen Sprachgebrauchs. Forschungsberichte – Projektangebote – Forschungskontexte
TI - Kreativität und Reproduktion. Annäherung an den Bildungshorizont von Ursula Weida
ER -
TY - CONF
AU - Peckhaus, Volker
ID - 17487
T2 - VI. Internationalen Leibniz-Kongreß. Vorträge I. Teil, Hannover, 18.–22.7.1994
TI - Leibniz als Identifikationsfigur der britischen Logiker des 19. Jahrhunderts
ER -
TY - JOUR
AB - Abstracts: MR 94m:01033; Zbl. Math. 798.01016 (N.I. Osetinski); Philosopher’s Index 28.3 (Herbst 1994), 179.
AU - Peckhaus, Volker
ID - 17486
JF - History and Philosophy of Logic
TI - Benno Kerry. Beiträge zu seiner Biographie
VL - 15
ER -
TY - CHAP
AU - Hilgert, Joachim
AU - Neeb, K.-H.
ED - Doebner, H.D.
ID - 51481
T2 - Generalized Symmetries in Physics
TI - Poisson Lie Groups and Non-LInear Convexity Theorems
ER -
TY - CHAP
AU - Hilgert, Joachim
ED - Tanner, E.A.
ED - Wilson, R.
ID - 51482
T2 - Non-Compact Lie Groups and some of their Applcations
TI - Radon Transform on Halfplanes via Group Theory
VL - 249
ER -
TY - CHAP
AU - Hilgert, Joachim
AU - Neeb, K.-H.
ED - Gindikin, S.G.
ED - Michor, P.
ID - 51480
T2 - 75 Years of Radon Transform
TI - A General Setting for Wiener-Hopf Operators
ER -
TY - JOUR
AU - Hilgert, Joachim
AU - Neeb, K.-H.
AU - Orsted, B.
ID - 51438
JF - J. Lie Theory
TI - The Geometry of Nilpotent Coadjoint Orbits of Convex Type in Hermitian Lie Algebras
VL - 4
ER -
TY - JOUR
AU - Hilgert, Joachim
AU - Faraut, J.
AU - Ólafsson, G.
ID - 51439
JF - Ann. Inst. Fourier
TI - Spherical Functions on Ordered Symmetric Spaces
VL - 44
ER -
TY - JOUR
AU - Hilgert, Joachim
AU - Neeb, K.-H.
AU - Plank, W.
ID - 51440
JF - Compositio Math.
TI - Symplectic Convexity Theorems and Coadjoint Orbits
VL - 94
ER -
TY - JOUR
AU - Hilgert, Joachim
ID - 51441
JF - Canad. J. Math.
TI - A Convexity Theorems for Boundaries of Ordered Symmetric Spaces
VL - 46
ER -
TY - GEN
AU - Hilgert, Joachim
ID - 51596
T2 - Zentralblatt für Math.
TI - Leptin, H. und J. Ludwig. Unitary Representation Theory of Exponential Lie Groups (De Gruyter, Berlin, 1994)
ER -
TY - JOUR
AU - Betz, Stefan
ID - 2561
JF - Zeitschrift für Betriebswirtschaft
TI - Die Berücksichtigung von technischem Fortschritt im Konzept der investitionstheoretisch fundierten Abschreibung
VL - 65
ER -
TY - JOUR
AU - Betz, Stefan
ID - 2563
JF - Zeitschrift für Planung
TI - Die Bedeutung der Periodenplanbeschäftigung im Rahmen einer investitionstheoretisch fundierten Kostenrechnung
VL - 6
ER -
TY - GEN
AU - Eke, Norbert Otto
ID - 19555
IS - H. 2
T2 - Wirkendes Wort
TI - Ingo Schmidt, Florian Vaßen. Unter Mitarbeit von Uwe Sänger sowie Roger Fornhoff, Anja Maria Prochaska und Hendrik Werner: Bibliographie Heiner Müller 1948-1992. Bielefeld 1993
VL - 45
ER -
TY - GEN
AU - Eke, Norbert Otto
ID - 19556
IS - H. 1
T2 - Zeitschrift für Germanistik
TI - Bürgerlichkeit im Umbruch. Studien zum deutschsprachigen Drama 1750-1800. Mit einer Bibliographie der Dramen der Oettingen-Wallersteinschen Bibliothek zwischen 1750 und 1800. Hg. von Helmut Koopmann. Tübingen 1993
VL - NF V
ER -
TY - THES
AU - Stemann, Volker
ID - 19623
SN - 3-931466-02-7
TI - Contention Resolution in Hashing Based Shared Memory Simulations
VL - 3
ER -
TY - THES
AU - Czumaj, Artur
ID - 19627
SN - 3-931466-07-8
TI - Parallel Algorithmic Techniques: PRAM Algorithms and PRAM Simulations
VL - 8
ER -
TY - THES
AU - Wachsmann, Alf
ID - 19630
SN - 3-931466-05-1
TI - Eine Bibliothek von Basisdiensten für Parallelrechner: Routing, Synchronisation, gemeinsamer Speicher
VL - 6
ER -
TY - THES
AU - Ameur, Foued
ID - 19634
SN - 3-931466-09-4
TI - Space-Bounded Learning Algorithms
VL - 10
ER -
TY - CONF
AU - Röttger, Markus
AU - Schroeder, Ulf-Peter
AU - Simon, Jens
ID - 2447
T2 - Proc. Int. Conf. on High-Performance Computing and Networking
TI - Implementation of a Parallel and Distributed Mapping Kernel for PARIX
VL - 919
ER -
TY - CONF
AU - Römke, Thomas
AU - Röttger, Markus
AU - Schroeder, Ulf-Peter
AU - Simon, Jens
ID - 2448
T2 - Proc. ZEUS Workshop on Par. Programming and Computation
TI - An Efficient Mapping Library for Parix
ER -
TY - CONF
AU - Römke, Thomas
AU - Röttger, Markus
AU - Schroeder, Ulf-Peter
AU - Simon, Jens
ID - 2449
SN - 978-3-540-44769-6
T2 - Proc. European Conf. on Parallel Processing (Euro-Par)
TI - On Efficient Embeddings of Grids into Grids in PARIX
VL - 966
ER -
TY - GEN
AU - Gehring, Jörn
AU - Simon, Jens
ID - 2450
TI - SparcStation SCI-Interface
ER -
TY - CHAP
AU - Blazy, Stephan
AU - Dralle, Uwe
AU - Simon, Jens
ID - 2451
T2 - PowerXplorer User Report - Applications and Projects on the Parsytec PowerXplorer Parallel Computer
TI - Parallel CG Poisson Solver for PowerPC 601
ER -
TY - JOUR
AU - Betz, Stefan
ID - 2573
JF - Kostenrechnungspraxis
TI - Gemeinkostencontrolling auf Basis der Prozesskostenrechnung
VL - 39
ER -
TY - JOUR
AU - Betz, Stefan
ID - 2576
JF - Betriebswirtschaftliche Forschung und Praxis
TI - Die Erfahrungskurve als Instrument der Zielkostenspaltung
VL - 47
ER -
TY - JOUR
AU - Betz, Stefan
ID - 2577
JF - Zeitschrift für Planung
TI - Kostenorientierte Planung der Entsorgungslogistik
VL - 6
ER -
TY - BOOK
AU - Gries, Thomas
ID - 3386
SN - 3-16-146193-9
TI - Wachstum, Humankapital und die Dynamik der komparativen Vorteile
ER -
TY - CHAP
AU - Gries, Thomas
ED - Gahlen, Bernhard
ED - Hesse, Helmut
ID - 3530
SN - 9783161464720
T2 - Standort und Region, Neue Ansätze zur Regionalökonomik
TI - Neue regionale Wachstumstheorie und Humankapital als regionaler charakteristischer Faktor
ER -
TY - JOUR
AB - For two given simple polygonsP, Q, the problem is to determine a rigid motionI ofQ giving the best possible match betweenP andQ, i.e. minimizing the Hausdorff distance betweenP andI(Q). Faster algorithms as the one for the general problem are obtained for special cases, namely thatI is restricted to translations or even to translations only in one specified direction. It turns out that determining pseudo-optimal solutions, i.e. ones that differ from the optimum by just a constant factor, can be done much more efficiently than determining optimal solutions. In the most general case, the algorithm for the pseudo-optimal solution is based on the surprising fact that for the optimal possible match betweenP and an imageI(Q) ofQ, the distance between the centroids of the edges of the convex hulls ofP andI(Q) is a constant multiple of the Hausdorff distance betweenP andI(Q). It is also shown that the Hausdorff distance between two polygons can be determined in timeO(n logn), wheren is the total number of vertices.
AU - Alt, Helmut
AU - Behrends, Bernd
AU - Blömer, Johannes
ID - 3037
IS - 3
JF - Annals of Mathematics and Artificial Intelligence
SN - 1573-7470
TI - Approximate matching of polygonal shapes
VL - 13
ER -
TY - GEN
AU - Blömer, Johannes
AU - Kalfane, Malik
AU - Karp, Richard
AU - Karpinski, Marek
AU - Luby, Michael
AU - Zuckerman, David
ID - 3038
TI - An XOR-based erasure-resilient coding scheme
ER -
TY - CONF
AU - Postel, F.
AU - Oevel, Gudrun
AU - Schwarz, F.
ID - 17306
T2 - Beiträge zum Mathematikunterricht
TI - MuPAD in der Ausbildung
ER -
TY - CHAP
AU - Oevel, Gudrun
AU - Siek, G.
ID - 17307
T2 - AACE educational Multimedia and Hypermedia Annual
TI - Computer algebra in education
ER -
TY - CONF
AU - Czumaj, Artur
AU - Meyer auf der Heide, Friedhelm
AU - Stemann, Volker
ID - 17482
T2 - Proceedings of the 2nd IEEE Workshop on Reconfigurable Architectures
TI - Simulating shared memory in real time: On the computation power of reconfigurable meshes
ER -
TY - JOUR
AU - Peckhaus, Volker
ID - 17491
JF - Modern Logic
TI - Rüstow’s Thesis on Russell’s Paradox
VL - 5
ER -
TY - THES
AU - Seng, Eva- Maria
ID - 18691
TI - Der evangelische Kirchenbau im 19. Jahrhundert, die Eisenacher Bewegung und der Architekt Christian Friedrich von Leins
ER -
TY - BOOK
AB - Rezensionen (Auswahl) in:
- architectura Bd. 27, 1997, Heft 2, S. 221-228 von Elisabeth Spitzbart
- Blätter für württembergische Kirchengeschichte 96. Jg. 1996, S. 253f.von Rainer Lächele
- Etudes Theologiques Et Religieuses (Montpellier) 1997, 3, S. 490-491 von
Bernard Reymond
AU - Seng, Eva- Maria
ID - 18696
TI - Der evangelische Kirchenbau im 19. Jahrhundert, die Eisenacher Bewegung und der Architekt Christian Friedrich von Leins
ER -
TY - BOOK
AU - Seng, Eva- Maria
ID - 18701
TI - Kirchenbau zwischen Politik, Kunst und Liturgie. Theorie und Wirklichkeiten im Evangelischen Kirchenbau des 19. Jahrhunderts. Jahresgabe des Vereins für christliche Kunst in Württemberg 1995
ER -
TY - BOOK
AU - Eke, Norbert Otto
AU - Dörr, Volker C.
AU - a., u.
ID - 19136
TI - „Wir träumen ins Herz der Zukunft“. Literatur in Nordrhein-Westfalen 1971-1994 (Edition)
VL - 4
ER -
TY - CHAP
AU - Seng, Eva- Maria
ED - Lächele, Rainer
ED - Thierfelder, Jörg
ID - 19316
T2 - Das Evangelische Württemberg zwischen Weltkrieg und Wiederaufbau
TI - Zwischen Kontinuität, Notkirche und Neuanfang: Evangelischer Kirchenbau in Württemberg 1925 - 1955
ER -
TY - CHAP
AB - Angaben zur Herausgeberschaft: Hg. von Theo Buck und Jean-Marie Valentin in Verbindung mit Norbert Kenfgens und Doris Vogel
AU - Eke, Norbert Otto
ED - Buck, Theo
ED - Valentin, Jean-Marie
ED - Kenfgens, Norbert
ED - Vogel, Doris
ID - 19414
T2 - Heiner Müller – Rückblicke, Perspektiven. Vorträge des Pariser Kolloquiums 1993
TI - Zeit/Räume – Aspekte der Zeiterfahrung bei Heiner Müller
ER -
TY - THES
AU - Fahrwinkel, Uta
ID - 23685
TI - Methoden zur Modellierung und Analyse von Geschäftsprozessen zur Unterstützung des Business Process Reengineering
VL - 1
ER -
TY - THES
AU - Hornbostel, Dirk
ID - 23686
TI - Methode zur Modellierung der Informationsverarbeitung in Industrieunternehmen
VL - 2
ER -
TY - THES
AU - Ketterer, Norbert
ID - 23895
TI - Beschreibung von Datenaustausch eines verteilten Fertigungssteuerungssystems
VL - 4
ER -
TY - THES
AU - Hartmann, Thomas
ID - 23912
TI - Spezifikation und Klassifikation von Methoden zur Definition hierarchischer Abläufe
VL - 5
ER -
TY - BOOK
AU - Gausemeier, Jürgen
ID - 23914
TI - Die Szenario-Technik - Werkzeug für den Umgang mit einer multiplen Zukunft
VL - 7
ER -
TY - THES
AU - Humpert, Axel
ID - 23915
TI - Methodische Anforderungsverarbeitung auf Basis eines objektorientierten Anforderungsmodells
VL - 9
ER -
TY - CHAP
AU - Krimphove, Dieter
ED - Müller-Henneberg, Hans
ED - Schwartz, Gustav
ED - Benisch, Werner
ID - 2091
T2 - Gesetz gegen Wettbewerbsbeschränkungen und Europäisches Kartellrecht
TI - Kommentar § 5 c GWB (Einkaufskooperationen)
ER -
TY - JOUR
AU - Zimmer, Detmar
ID - 22315
IS - 22
JF - TECHNICA - Illustrierte technische Zeitschrift
SN - 0040-0866
TI - Systematik in der Flachgetriebeentwicklung
VL - 44
ER -
TY - JOUR
AU - Zenker, Dieter
AU - Zimmer, Detmar
ID - 22316
JF - KEM - Konstruktion Elektronik Maschinenbau
TI - Flachgetriebe: Ausführungen, Antriebsvarianten und Einsatzgebiete. Flexibilität im Sinn
VL - 4
ER -
TY - JOUR
AU - Zimmer, Detmar
ID - 22317
JF - Der Konstrukteur - Magazin für Konstruktion und Entwicklung
TI - Generationswechsel. Überarbeitung einer Getriebebaureihe
VL - 1-2
ER -
TY - JOUR
AU - Trächtler, Ansgar
AU - Wernsdörfer, Andreas
ID - 23361
JF - Frontiers in Industrial Process Tomography, Engineering Foundation
TI - Direct Algebraic Reconstruction in Electromagnetic Flow Tomography
ER -
TY - JOUR
AU - Trächtler, Ansgar
ID - 23362
JF - Frontiers in Industrial Process Tomography, Engineering Foundation
TI - Stress Tensor Tomography Using Integrated Photoelasticity
ER -
TY - CONF
AU - Kienegger-Domik, Gitta
ED - Maurer, H.
ID - 21786
T2 - Proceedings of ED-MEDIA `95
TI - Intelligent visualization systems in educational environments
ER -
TY - CONF
AU - Meyer auf der Heide, Friedhelm
AU - Scheideler, Christian
ID - 2187
T2 - ESA
TI - Routing with Bounded Buffers and Hot-Potato Routing in Vertex-Symmetric Networks
ER -
TY - CONF
AU - Meyer auf der Heide, Friedhelm
AU - Scheideler, Christian
ID - 2207
T2 - SPAA
TI - Space-Efficient Routing in Vertex-Symmetric Networks (Extended Abstract)
ER -
TY - CONF
AU - Meyer auf der Heide, Friedhelm
AU - Scheideler, Christian
AU - Stemann, Volker
ID - 2208
T2 - STACS
TI - Exploiting Storage Redundancy to Speed Up Randomized Shared Memory Simulations
ER -
TY - CONF
AB - We present a combination of recent extensions to single-pushout graph transformations, as there are attribution, application conditions and amalgamated graph transformations and add a simple transaction concept on top of this formalism. Thereby, we provide the formal basis for several examples, where these concepts are used in combination.
AU - Heckel, Reiko
AU - Müller, Jürgen
AU - Taentzer, Gabriele
AU - Wagner, Annika
ID - 7831
IS - B-19
T2 - Proceedings of the Colloquium on Graph Transformation and its Application in Computer Science
TI - Attributed Graph Transformations with Controlled Application of Rules
ER -
TY - CONF
AU - Thoben, Wilfried
AU - Appelrath, Hans-Jürgen
AU - Sauer, Stefan
ID - 7832
T2 - Proceedings of the 18th Annual Conference of the Gesellschaft für Klassifikation, Oldenburg (Germany)
TI - Record Linkage of Anonymous Data by Control Numbers
ER -
TY - CONF
AB - Single pushout graph transformations at injective matches are extended by negative application conditions. It is shown, how right-sided application conditions can be transformed into equivalent left-sided ones. Based on this result, conditional derived rules are introduced and a theorem, similiar to the double pushout embedding theorem is shown. Finally, three variants of contextual application conditions are discussed with respect to their expressive power and expected results.
AU - Heckel, Reiko
ID - 7833
IS - B-19
T2 - Proceedings of the Colloquium on Graph Transformation and its Application in Computer Science
TI - Embedding of Conditional Graph Transformations
ER -
TY - CHAP
AU - Kremer, H.-Hugo
ED - Braukmann, U.
ED - Euler, D.
ED - Kremer, H.-H.
ED - Theis, M.
ID - 7976
T2 - Meisterprüfung - Lernen für die Praxis, Ausbilden im Handwerk. Dozentenhandbuch für Teil IV der Meisterausbildung.
TI - Planung und Durchführung der Ausbildung
ER -
TY - CHAP
AU - Euler, D.
AU - Kremer, H.-Hugo
AU - Theis, M.
ED - Braukmann, U.
ED - Euler, D.
ED - Kremer, H.-H.
ED - Theis, M
ID - 8076
T2 - Meisterprüfung - Lernen für die Praxis, Ausbilden im Handwerk. Dozentenhandbuch für Teil IV der Meisterausbildung.
TI - Grundfragen der Berufsbildung
ER -
TY - CHAP
AU - Euler, D.
AU - Kremer, H.-Hugo
AU - Theis, M.
ED - Euler, D.
ED - Kremer, H.-Hugo
ED - Theis, M.
ID - 8077
T2 - Meisterprüfung - Lernen für die Praxis, Ausbilden im Handwerk
TI - Grundfragen der Berufsbildung
ER -
TY - CHAP
AU - Kremer, H.-Hugo
ED - Braukmann, U.
ED - Diettrich, A.
ED - Kremer, H.-H.
ED - Sloane, P.F.E.
ED - Stickling, E.
ID - 8078
T2 - Meisterprüfung - Lernen für die Praxis - Unternehmensführung 1
TI - Existenzgründung
ER -
TY - CONF
AU - Krauter, Stefan
ID - 8097
T2 - Proceedings of the ISES Solar World Congress 1995, Harare (Simbabwe), 11.–15. September 1995.
TI - Solar Electricity up to 30% less expensive by optical and thermal enhanced PV modules
ER -
TY - CONF
AU - Onneken, K.
AU - Krauter, Stefan
ID - 8098
T2 - Proceedings of the 1995 ISES Solar World Congress, Harare (Simbabwe), 11.–15. September 1995
TI - STOPV: A Development Tool for Thermal and Optical Optimization of PV Module Encapsulations
ER -
TY - CONF
AU - Krauter, Stefan
ID - 8099
T2 - Proceedings of the ISES Solar World Congress 1995, Harare (Simbabwe), 11.–15. September 1995
TI - Actual Optical and Thermal Performance of PV-Modules
ER -
TY - CONF
AU - Krauter, Stefan
ID - 8100
T2 - Proceedings of the 13th European Photovoltaic Solar Energy Conference, Nizza (Frankreich), 23.–27. Oktober 1995, S. 2306–2309.
TI - Thermal and Optical Enhanced PV-Modules
ER -
TY - GEN
AU - Conrad, Mirko
AU - Gajewsky, Magdalena
AU - Holl-Biniasz, Rainer
AU - Rudolf, Michael
AU - Demuth, Jochen
AU - Weber, Stephan
AU - Heckel, Reiko
AU - Müller, Jürgen
AU - Taentzer, Gabriele
AU - Wagner, Annika
ID - 8194
TI - Graphische Spezifikation ausgewählter Teile von AGG - einem algebraischen Graphgrammatiksystem
ER -
TY - GEN
AB - Several object-oriented modeling approaches propose to describe the dynamic behaviour of objects by state transition diagrams. None of them provides precise rules or conditions for the interrelation between the behaviour description of classes and those of their subclasses. In this paper, we discuss this interrelation in detail. It turns out that one has to distinguish between the observable and the invocable behaviour of objects and that different compatibility requirements between the diagrams exist depending on the type of behaviour.
AU - Ebert, Jürgen
AU - Engels, Gregor
ID - 8195
TI - Specialization of Object Life Cycle Definitions
ER -
TY - GEN
AU - Engels, Gregor
AU - Schürr, Andy
ID - 8196
TI - Encapsulated Hierarchical Graphs, Graph Types, and Meta Types
ER -
TY - CONF
AU - Groenewegen, Luuk
AU - Engels, Gregor
ID - 8266
T2 - Proceedings of the 4th European Workshop on Software Process Technology (EWSPT 1995), Noordwijkerhout (The Netherlands)
TI - Coordination by Behavioural Views and Communication Patterns
VL - 913
ER -
TY - CONF
AB - Based on a categorical semantics that has been developed for typed graph grammars we uses colimits (pushouts) to model composition and (reverse) graph grammar morphisms to describe refinements of typed graph grammars. Composition of graph grammars w.r.t. common subgrammars is shown to be compatible with the semantics, i.e. the semantics of the composed grammar is obtained as the composition of the semantics of the component grammars. Moreover, the structure of a composed grammar is preserved during a refinement step in the sense that compatible refinements of the components induce a refinement of the composition. The concepts and results are illustrated by an example.
AU - Corradini, Andrea
AU - Heckel, Reiko
ID - 8267
T2 - Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy)
TI - A Compositional Approach to Structuring and Refinement of Typed Graph Grammars
VL - 2
ER -
TY - CONF
AB - The overall aim of this paper is a proposal how to bridge the gap between formal specification techniques developed in research projects and semi--formal or informal specifications used in industrial practice. The main idea to overcome these problems is to develop graphical support for formal methods in order to increase acceptance by practitioners and to provide means for integration of formal and semi--formal methods. More specifically suitable concepts will be developed to combine algebraic specifications, Petri Nets, and Graph Grammars with each other and with distinguished graphical components to be used by industrial partners.
AU - Bardohl, Bernhard
AU - Bardohl, Roswitha
AU - Castro, Paulo
AU - Ehrig, Hartmut
AU - Heckel, Reiko
AU - Ribeiro, Leila
AU - Nunes, Daltro
AU - Martini, Alfio
ID - 8268
T2 - Proceedings of the 3rd German-Brazilian Workshop on Information Technology (1995), Berlin (Germany)
TI - GRAPHIT: Graphical Support and Integration of Formal and Semiformal Methods for Software Specification and Development
VL - 26
ER -
TY - CONF
AB - Currently existing graph grammar-based specification languages have serious problems with supporting any kind of “specification-in-the-large” activities. More precisely, they have deficiencies with respect to modeling hierarchical data structures or specifying meta activities like manipulation of graph schemata. Furthermore, already proposed graph grammar module concepts are still too abstract to be useful in practice. Our contribution addresses these problems by introducing a new hierarchical graph data model with an infinite number of schema, meta-schema, etc. layers. It forms the base for a forthcoming concrete modular graph grammar specification language where in addition information hiding aspects like explicit export and import interfaces are expressible.
AU - Engels, Gregor
AU - Schürr, Andy
ID - 8269
T2 - Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy)
TI - Encapsulated Hierarchical Graphs, Graph Types, and Meta Types
ER -
TY - CONF
AU - Heckel, Reiko
AU - Wagner, Annika
ID - 8270
T2 - Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy)
TI - Ensuring Consistency of Conditional Graph Grammars - A constructive Approach
VL - 2
ER -
TY - CHAP
AU - Kremer, H.-Hugo
ED - Braukmann, U.
ED - Diettrich, A.
ED - Kremer, H.-H.
ED - Sloane, P.F.E.
ED - Stickling, E.
ID - 8354
T2 - Meisterprüfung - Lernen für die Praxis - Unternehmensführung 1
TI - Existenzgründung
ER -
TY - JOUR
AB - In an array of coupled oscillators, synchronous chaos may occur in the sense that all the oscillators behave identically although the corresponding motion is chaotic. When a parameter is varied this fully symmetric dynamical state can lose its stability, and the main purpose of this paper is to investigate which type of dynamical behavior is expected to be observed once the loss of stability has occurred. The essential tool is a classification of Lyapunov exponents based on the symmetry of the underlying problem. This classification is crucial in the derivation of the analytical results but it also allows an efficient computation of the dominant Lyapunov exponent associated with each symmetry type. We show how these dominant exponents determine the stability of invariant sets possessing various instantaneous symmetries, and this leads to the idea of symmetry breaking bifurcations of chaotic attractors. Finally, the results and ideas are illustrated for several systems of coupled oscillators.
AU - Aston, Philip J.
AU - Dellnitz, Michael
ID - 16510
JF - International Journal of Bifurcation and Chaos
SN - 0218-1274
TI - Symmetry Breaking Bifurcations of Chaotic Attractors
ER -
TY - JOUR
AU - Dellnitz, M
AU - Heinrich, C
ID - 16532
JF - Nonlinearity
SN - 0951-7715
TI - Admissible symmetry increasing bifurcations
ER -
TY - JOUR
AU - Dellnitz, M
AU - Melbourne, I
ID - 16542
JF - Nonlinearity
SN - 0951-7715
TI - A note on the shadowing lemma and symmetric periodic points
ER -
TY - JOUR
AU - Dellnitz, Michael
AU - Field, Michael
AU - Golubitsky, Martin
AU - Ma, Jun
AU - Hohmann, Andreas
ID - 16550
JF - International Journal of Bifurcation and Chaos
SN - 0218-1274
TI - Cycling Chaos
ER -
TY - JOUR
AB - Spiral patterns have been observed experimentally, numerically, and theoretically in a variety of systems. It is often believed that these spiral wave patterns can occur only in systems of reaction–diffusion equations. We show, both theoretically (using Hopf bifurcation techniques) and numerically (using both direct simulation and continuation of rotating waves) that spiral wave patterns can appear in a single reaction–diffusion equation [ in u(x, t)] on a disk, if one assumes "spiral" boundary conditions (ur = muθ). Spiral boundary conditions are motivated by assuming that a solution is infinitesimally an Archimedian spiral near the boundary. It follows from a bifurcation analysis that for this form of spirals there are no singularities in the spiral pattern (technically there is no spiral tip) and that at bifurcation there is a steep gradient between the "red" and "blue" arms of the spiral.
AU - Dellnitz, Michael
AU - Golubitsky, Martin
AU - Hohmann, Andreas
AU - Stewart, Ian
ID - 16551
JF - International Journal of Bifurcation and Chaos
SN - 0218-1274
TI - Spirals in Scalar Reaction–Diffusion Equations
ER -
TY - JOUR
AU - Breslauer, Dany
AU - Czumaj, Artur
AU - Dubhashi, Devdatt P.
AU - Meyer auf der Heide, Friedhelm
ID - 16566
JF - Information Processing Letters
SN - 0020-0190
TI - Transforming comparison model lower bounds to the parallel-random-access-machine
ER -
TY - CHAP
AU - Golubitsky, Martin
AU - Marsden, Jerrold
AU - Stewart, Ian
AU - Dellnitz, Michael
ID - 16611
SN - 9780821803264
T2 - Normal Forms and Homoclinic Chaos
TI - The constrained Liapunov-Schmidt procedure and periodic orbits
ER -
TY - CHAP
AU - Meyer auf der Heide, Friedhelm
AU - Vöcking, Berthold
ID - 16704
SN - 0302-9743
T2 - STACS 95
TI - A packet routing protocol for arbitrary networks
ER -
TY - CHAP
AU - Czumaj, Artur
AU - Meyer auf der Heide, Friedhelm
AU - Stemann, Volker
ID - 16705
SN - 0302-9743
T2 - Lecture Notes in Computer Science
TI - Shared memory simulations with triple-logarithmic delay
ER -
TY - CONF
AU - Meyer auf der Heide, Friedhelm
AU - Storch, Martin
AU - Wanka, Rolf
ID - 16706
SN - 0897917170
T2 - Proceedings of the seventh annual ACM symposium on Parallel algorithms and architectures - SPAA '95
TI - Optimal trade-offs between size and slowdown for universal parallel networks
ER -
TY - CONF
AU - Czumaj, Artur
AU - Meyer auf der Heide, Friedhelm
AU - Stemann, Volker
ID - 16707
SN - 0818669152
T2 - Proceedings Third Israel Symposium on the Theory of Computing and Systems
TI - Improved optimal shared memory simulations, and the power of reconfiguration
ER -
TY - CHAP
AU - Meyer auf der Heide, Friedhelm
AU - Westermann, Matthias
ID - 16717
SN - 0302-9743
T2 - Graph-Theoretic Concepts in Computer Science
TI - Hot-potato routing on multi-dimensional tori
ER -
TY - CHAP
AU - Bäumker, Armin
AU - Dittrich, Wolfgang
AU - Meyer auf der Heide, Friedhelm
ID - 16874
SN - 0302-9743
T2 - Lecture Notes in Computer Science
TI - Truly efficient parallel algorithms: c-optimal multisearch for an extension of the BSP model
ER -
TY - JOUR
AU - Platzner, Marco
AU - Rinner, Bernhard
AU - Weiss, Reinhold
ID - 10610
JF - J.UCS Journal of Universal Computer Science
TI - Exploiting Parallelism in Constraint Satisfaction for Qualitative Simulation
VL - 12
ER -
TY - CONF
AB - Clustering techniques have been integrated at different levels into the training procedure of a continuous-density hidden Markov model (HMM) speech recognizer. These clustering techniques can be used in two ways. First acoustically similar states are tied together. It will help to reduce the number of parameters but also allow to train otherwise rarely seen states together with more robust ones (state-tying). Secondly densities are clustered across states, this reduces the number of densities while at the same time keeping the best performances of our recognizer (density-clustering). We have applied these techniques both to word-based small-vocabulary and phoneme-based large-vocabulary recognition tasks. On the WSJ task, we could achieve a reduction of the word error rate by 7%. On the TI/NIST-connected digit task, the number of parameters was reduced by a factor 2-3 while keeping the same string error rate.
AU - Dugast, Christian
AU - Beyerlein, Peter
AU - Haeb-Umbach, Reinhold
ID - 11757
T2 - ICASSP, Detroit
TI - Application of Clustering Techniques to Mixture Density Modelling for Continuous-Speech Recognition
ER -
TY - JOUR
AB - Today speech recognition of a small vocabulary can be realized so cost-effectively that the technology can penetrate into consumer electronics. But, as first applications that failed on the market show, it is by no means obvious how to incorporate voice control in a user interface. This paper addresses the issue of how to design a voice control so that the user perceives it as a benefit. User interface guidelines that are adapted or specific to voice control are presented. Then the process of designing a voice control in the user-centred approach is described. By means of two examples, the car stereo and telephone answering machine, it is shown how this is turned into practice.
AU - Gamm, Stephan
AU - Haeb-Umbach, Reinhold
ID - 11764
JF - Philips Journal of Research
TI - User interface design of voice controlled consumer electronics
ER -
TY - CONF
AU - Gamm, Stephan
AU - Haeb-Umbach, Reinhold
ID - 11765
T2 - Eurospeech, Madrid
TI - Human Factors of a Voice-Controlled Car Stereo
ER -
TY - CONF
AU - Gamm, Stephan
AU - Haeb-Umbach, Reinhold
AU - Langmann, Det
ID - 11768
T2 - International Symposium on Human Factors in Telecommunications, Melbourne
TI - The Usability Engineering of a Voice-Controlled Answering Machine
ER -
TY - JOUR
AB - Recognition accuracy has been the primary objective of most speech recognition research, and impressive results have been obtained, e.g. less than 0.3% word error rate on a speaker-independent digit recognition task. When it comes to real-world applications, robustness and real-time response might be more important issues. For the first requirement we review some of the work on robustness and discuss one specific technique, spectral normalization, in more detail. The requirement of real-time response has to be considered in the light of the limited hardware resources in voice control applications, which are due to the tight cost constraints. In this paper we discuss in detail one specific means to reduce the processing and memory demands: a clustering technique applied at various levels within the acoustic modelling.
AU - Haeb-Umbach, Reinhold
AU - Beyerlein, Peter
AU - Geller, Dieter
ID - 11786
JF - Philips Journal of Research
TI - Speech recognition algorithms for voice control interfaces
ER -
TY - CONF
AB - We address the problem of automatically finding an acoustic representation (i.e. a transcription) of unknown words as a sequence of subword units, given a few sample utterances of the unknown words, and an inventory of speaker-independent subword units. The problem arises if a user wants to add his own vocabulary to a speaker-independent recognition system simply by speaking the words a few times. Two methods are investigated which are both based on a maximum-likelihood formulation of the problem. The experimental results show that both automatic transcription methods provide a good estimate of the acoustic models of unknown words. The recognition error rates obtained with such models in a speaker-independent recognition task are clearly better than those resulting from separate whole-word models. They are comparable with the performance of transcriptions drawn from a dictionary.
AU - Haeb-Umbach, Reinhold
AU - Beyerlein, P.
AU - Thelen, E.
ID - 11787
T2 - ICASSP, Detroit
TI - Automatic Transcription of Unknown Words in a Speech Recognition System
ER -
TY - JOUR
AB - This paper gives an overview of the Philips Research system for continuous-speech recognition. The recognition architecture is based on an integrated statistical approach. The system has been successfully applied to various tasks in American English and German, ranging from small vocabulary tasks to very large vocabulary tasks and from recognition only to speech understanding. Here, we concentrate on phoneme-based continuous-speech recognition for large vocabulary recognition as used for dictation, which covers a significant part of our research work on speech recognition. We describe this task and report on experimental results. In order to allow a comparison with the performance of other systems, a section with an evaluation on the standard North American Business news (NAB2) task (dictation of American English newspaper text) is supplied.
AU - Steinbiss, Volker
AU - Ney, Hermann J.
AU - Aubert, Xavier L.
AU - Besling, Stefan
AU - Dugast, Christian
AU - Essen, Ute
AU - Geller, Dieter
AU - Haeb-Umbach, Reinhold
AU - Kneser, Reinhard
AU - Meier, Hans Günter
AU - Oerder, Martin
AU - Tran, Bach Hiep
ID - 11905
JF - Philips Journal of Research
TI - The Philips Research system for continuous-speech dictation
ER -
TY - JOUR
AB - This paper gives an overview of the Philips research system for phoneme-based, large-vocabulary, continuousspeech recognition. The system has been successfully applied to various tasks in the German and (American) English languages, ranging from small vocabulary tasks to very large vocabulary tasks. Here, we concentrate on continuousspeech recognition for dictation in real applications, the dictation of legal reports and radiology reports in German. We describe this task and report on experimental results. We also describe a commercial PC-based dictation system which includes a PC implementation of our scientific recognition prototype. In order to allow for a comparison with the performance of other systems, a section with an evaluation on the standard Wall Street Journal task (dictation of American English newspaper text) is supplied. 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.
AU - Steinbiss, Volker
AU - Ney, Hermann J.
AU - Essen, Ute
AU - Tran, Bach Hiep
AU - Aubert, Xavier L.
AU - Dugast, Christian
AU - Kneser, Reinhard
AU - Meier, Hans Günter
AU - Oerder, Martin
AU - Haeb-Umbach, Reinhold
AU - Geller, Dieter
AU - Hoellerbauer, W.
AU - Bartosik, H.
ID - 11948
JF - Speech Communication
TI - Continuous speech dictation - From theory to practice
ER -
TY - GEN
AU - Hellebrand, Sybille
AU - Wunderlich, Hans-Joachim
ID - 13026
TI - Synthesis Procedures for Self-Testable Controllers
ER -
TY - GEN
AU - Hellebrand, Sybille
AU - Wunderlich, Hans-Joachim
AU - Goncalves, F.
AU - Paulo Teixeira, Joao
ID - 13027
TI - Evaluation of Self-Testable Controller Architectures Based on Realistic Fault Analysis
ER -
TY - GEN
AU - Hellebrand, Sybille
AU - Herzog, Maik
AU - Wunderlich, Hans-Joachim
ID - 13028
TI - Partitioning of CMOS-Circuits for On-Chip IDDQ-Testing
ER -
TY - CONF
AU - Hüllermeier, Eyke
ED - Zimmermann, H.J.
ID - 15294
T2 - in Proceedings EUFIT-95 3rd European Congress on Intelligent Techniques and Soft Computing, Aachen, Germany
TI - Towards modelling of fuzzy functions
ER -
TY - CONF
AU - Hüllermeier, Eyke
ID - 15295
T2 - in Proceedings ISFL-95 International Symposium on Logic, Zürich
TI - Rule-based modelling in fuzzy simulation
ER -
TY - CONF
AU - Hüllermeier, Eyke
ID - 15305
T2 - in Proceedings IMACS Symposium on Systems Analysis and Simulation, Berlin
TI - Fuzzy polynomial and spline interpolation
ER -
TY - CONF
AU - Domik-Kienegger, Gitta
AU - Owen, GS
ID - 15272
T2 - Proceedings of the Third Eurographics Workshop on Graphics and Visualization
TI - Education for Visualization-Activities of the ACM-SIGGRAPH Education Committee
ER -
TY - BOOK
AU - Krimphove, Dieter
AU - Brehmer, Carsten
ID - 1602
TI - Die Gründung einer GmbH
VL - Nr. 13
ER -
TY - BOOK
AU - Krimphove, Dieter
ID - 1603
TI - Rechtliche Rahmenbedingungen des deutschen und internationalen Börsentermingeschäftes Ein Leitfaden für Banken, Sparkassen, Kreditinstitute, Anlagevermittler und Kunden mit Checklisten und Hinweisen zur Durchführung einer ordnungsgemäßen Anlageberatung
VL - Nr. 14
ER -
TY - CHAP
AU - Hüllermeier, Eyke
ED - Flemmig, J.
ID - 16236
T2 - Moderne Makroökonomie-Eine kritische Bestandsaufnahme
TI - Konjunkturzyklen aufgrund von Investitionsinterdependenzen: Simulation und empirische Überprüfung
ER -
TY - JOUR
AU - Dohmeier-Fischer, Silvia
AU - Krämer, Nicolai
AU - Grützmacher, Hans- Friedrich
ID - 16243
JF - European Journal of Mass Spectrometry
SN - 1356-1049
TI - Rearrangement by intermediate ion/neutral complexes during the McLafferty fragmentation of unsaturated ketones
ER -
TY - GEN
AU - Hellebrand, Sybille
AU - Reeb, Birgit
AU - Tarnick, Steffen
AU - Wunderlich, Hans-Joachim
ID - 13086
KW - WORKSHOP
TI - Pattern Generation for a Deterministic BIST Scheme
ER -
TY - CONF
AU - Platzner, Marco
AU - Rinner, Bernhard
AU - Weiss, Reinhold
ID - 13469
T2 - Proceedings of the 3rd Euromicro Workshop on Parallel and Distributed Processing
TI - A Distributed Computer Architecture for Qualitative Simulation based on a Multi-DSP and FPGAs
ER -
TY - CONF
AU - Brenner, Eugen
AU - Ginthör-Kalcsics, Robert
AU - Hranitzky, Robert
AU - Platzner, Marco
AU - Rinner, Bernhard
AU - Steger, Christian
AU - Weiss, Reinhold
ID - 13470
T2 - Proceedings of the 5th Annual Texas Instruments TMS320 Educators Conference
TI - High-Performance Simulators Based on Multi-TMS320C40
ER -
TY - CONF
AU - Friedl, Gerald
AU - Platzner, Marco
AU - Rinner, Bernhard
ID - 13471
T2 - Proceedings of the EURO-PAR'95 International Conference on Parallel Processing
TI - A Special-Purpose Coprocessor for Qualitative Simulation
ER -