@inproceedings{44278, abstract = {{Transient four-wave mixing (TFWM) has been extensively used during the last few years to study exciton dynamics in semiconductors and in semiconductor heterostructures. These studies have provided significant insight into exciton dynamics in both ordered and disordered systems. There are, nevertheless, still certain aspects of the excitonic TFWM response that are not completely understood. In particular, a complete understanding of the polarization and intensity dependences of the signai strength, the decay of the time-integrated signal, and the temporal characteristics of the time-resolved signal has proven elusive. Recent theoretical and experimental work has indicated that exciton-exciton interactions are important.1·2 Such interactions include incoherent processes, such as excitation-induced dephasing, and the formation of biexcitons. Additionally, some of the phenomena result from disorder, making them sample dependent.}}, author = {{Meier, Torsten and Albrecht, T.F. and Schulze, A. and Koch, M. and Bott, K. and Feldmann, J. and Stolz, W. and Kuhl, J. and Mayer, E.J. and Koch, S.W. and Göbel, E.O. and Cundiff, S.T.}}, booktitle = {{Quantum Electronics and Laser Science Conference}}, isbn = {{1-55752-402-5}}, location = {{Baltimore, Maryland United States}}, publisher = {{Optical Society of America}}, title = {{{Quantum beats from biexcitons in narrow quantum wells: polarization and density dependence}}}, year = {{1995}}, } @techreport{45229, author = {{Herzig, Bardo and Mütze, Ch. and Greiff, S.}}, publisher = {{FB 2, Universität Paderborn}}, title = {{{Entwurf eines Drehbuchs für eine Hypermedia-Arbeitsumgebung zum sozialen Lernen}}}, year = {{1995}}, } @article{13800, author = {{Kress, Clemens and Fiedler, Marion and Schmidt, Wolf Gero and Bechstedt, Friedhelm}}, issn = {{0039-6028}}, journal = {{Surface Science}}, pages = {{1152--1156}}, title = {{{Quasi-particle band structure of C(111)2 × 1 and C(100)2 × 1 surfaces}}}, doi = {{10.1016/0039-6028(95)00160-3}}, volume = {{331-333}}, year = {{1995}}, } @article{23363, author = {{Nowinski, Günther and Trächtler, Ansgar and Lafuente Jorge, Ruben}}, journal = {{Proc. 2. Intern. Conf. Intelligent Systems Engineering}}, title = {{{The Design Process for Conventional and Neural Controllers - a Case Study}}}, year = {{1994}}, } @inproceedings{7827, abstract = {{Die Pilotphase 1993/ 94 zum Aufbau eines Niedersächsischen Krebsregister untersucht das im Entwurf des Bundeskrebsregistergesetzes vorgesehen Modell für ein bevölkerungsbezogenes Krebsregister. Darin werden die Krebsmeldungen in einer Vertrauensstelle erfaßt und die personenidentifizierenden Daten vor der Übermittlung an die Registerstelle anonymisiert, wo sie dann zu einem bevölkerungsbezogenen Krebsregister verdichtet und epidemiologischer Forschung zur Verfügung gestellt werden ([1], [2], [3]). Dieses sogenannte „Michaelis“-Modell erlaubt eine bevölkerungsbezogene Registrierung von Krebsfällen unter Berücksichtigung datenschutzrechtlicher Aspekte („Informationelles Selbstbestimmungsrecht“) der einzelnen Betroffenen. In vier Teilprojekten werden dabei in der Modellregion Weser-Ems die Integration krebsregistrierender Einrichtungen, die Chiffrierung/ Dechiffrierung von Krebsmeldungen, der Abgleich anonymisierter Meldungen in der Registerstelle und die Entwicklung eines epidemiologischen Informationssystem betrachtet ([4], [5]).}}, author = {{Thoben, Wilfried and Appelrath, Hans-Jürgen and Rettig, Jens and Sauer, Stefan}}, booktitle = {{Proceedings of the conference on Medizin und Information, Biometrie und Epidemiologie (GMDS 1994), Dresden (Germany)}}, pages = {{88--90}}, publisher = {{MMV Medizin Verlag}}, title = {{{Berücksichtigung von Datenschutzaspekten in einem bevölkerungsbezogenen Krebsregister}}}, year = {{1994}}, } @inproceedings{8092, author = {{Krauter, Stefan and Hanitsch, Rolf and Campbell, P. and Wenham, S.R. }}, booktitle = {{Proceedings of the 12th European Photovoltaic Solar Energy Conference, Amsterdam (Niederlande), 11.–15. April 1994, Band 2, S. 1198–1201}}, title = {{{Optical Modelling, Simulation and Improvement of PV Module Encapsulation}}}, year = {{1994}}, } @inproceedings{8093, author = {{Strauss, Philipp and Onneken, K. and Krauter, Stefan and Hanitsch, Rolf}}, booktitle = {{Proceedings of the 12th European Photovoltaic Solar Energy Conference, Amsterdam (Niederlande), 11.–15. April 1994, Band 2, S. 1194–1197.}}, title = {{{Simulation Tool for Prediction and Optimization of Output Power Considering Thermal and Optical Parameters of PV Module Encapsulation}}}, year = {{1994}}, } @article{11879, abstract = {{This paper gives an overview of a research system for phoneme based, large vocabulary continuous speech recognition. The system to be described has been applied to the SPICOS task, the DARPA RM task and a 12000 word dictation task. Experimental results for these three tasks will be presented. Like many other systems, the recognition architecture is based on an integrated statistical approach. In this paper, 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 any tying or smoothing; this approach can be viewed as a sort of ‘statistical template matching’. (3) Time-synchronous beam search is used consistently throughout all tasks; extensions using a tree organization of the vocabulary and phoneme lookahead are presented so that a 12000 word task can be handled.}}, author = {{Ney, Hermann and Steinbeiss, Volker and Haeb-Umbach, Reinhold and Tran, Bach Hiep}}, journal = {{International Journal on Pattern Recognition and Artificial Intelligence}}, title = {{{An Overview of the Philips Research System for Large Vocabulary Continuous Speech Recognition}}}, year = {{1994}}, } @misc{17896, abstract = {{[Abdruck siehe 7.13, revidierte Fassung 4.18]}}, author = {{Peckhaus, Volker}}, title = {{{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]}}}, year = {{1994}}, } @inbook{32989, author = {{Öhlschläger, Claudia and Schmidt, Dietmar}}, booktitle = {{Hofmannsthal-Jahrbuch 2 }}, pages = {{9--59}}, title = {{{ "Weibsfauna". Zur Koinzidenz von Tiergeschichte und Pornographie am Beispiel von Bambi und Josefine Mutzenbacher}}}, year = {{1994}}, } @article{35384, author = {{Kratzat, Krystyna and Schmidt, Claudia and Finkelmann, Heino}}, issn = {{0021-9797}}, journal = {{Journal of Colloid and Interface Science}}, keywords = {{Colloid and Surface Chemistry, Surfaces, Coatings and Films, Biomaterials, Electronic, Optical and Magnetic Materials}}, number = {{1}}, pages = {{190--198}}, publisher = {{Elsevier BV}}, title = {{{A Doubly Branched Nonionic Oligooxyethylene V-Amphiphile: Effect of Molecular Geometry on Liquid-Crystalline Phase Behavior, 3}}}, doi = {{10.1006/jcis.1994.1095}}, volume = {{163}}, year = {{1994}}, } @article{35386, author = {{Grabowski, D. A. and Schmidt, Claudia}}, issn = {{0024-9297}}, journal = {{Macromolecules}}, keywords = {{Materials Chemistry, Inorganic Chemistry, Polymers and Plastics, Organic Chemistry}}, number = {{9}}, pages = {{2632--2634}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Simultaneous Measurement of Shear Viscosity and Director Orientation of a Side-Chain Liquid-Crystalline Polymer by Rheo-NMR}}}, doi = {{10.1021/ma00087a037}}, volume = {{27}}, year = {{1994}}, } @article{35385, author = {{Disch, Stefan and Schmidt, Claudia and Finkelmann, Heino}}, issn = {{1022-1336}}, journal = {{Macromolecular Rapid Communications}}, keywords = {{Materials Chemistry, Polymers and Plastics, Organic Chemistry}}, number = {{4}}, pages = {{303--310}}, publisher = {{Wiley}}, title = {{{Nematic elastomers beyond the critical point}}}, doi = {{10.1002/marc.1994.030150402}}, volume = {{15}}, year = {{1994}}, } @article{35383, author = {{Schnepp, Werner and Schmidt, Claudia}}, issn = {{0005-9021}}, journal = {{Berichte der Bunsengesellschaft für physikalische Chemie}}, keywords = {{General Chemical Engineering}}, number = {{2}}, pages = {{248--252}}, publisher = {{Wiley}}, title = {{{Conformational order of amphiphilic chain molecules in lyotropic liquid-crystalline phases}}}, doi = {{10.1002/bbpc.19940980219}}, volume = {{98}}, year = {{1994}}, } @article{40006, author = {{Behrens, Ulrike and Kitzerow, Heinz-Siegfried and Chilaya, Gouram}}, issn = {{0267-8292}}, journal = {{Liquid Crystals}}, keywords = {{Condensed Matter Physics, General Materials Science, General Chemistry}}, number = {{4}}, pages = {{597--603}}, publisher = {{Informa UK Limited}}, title = {{{Electro-optic effect in polymer-dispersed cholesteric liquid crystals with medium chirality}}}, doi = {{10.1080/02678299408036744}}, volume = {{17}}, year = {{1994}}, } @article{40322, author = {{Molsen, Henning and Kitzerow, Heinz-Siegfried}}, issn = {{0021-8979}}, journal = {{Journal of Applied Physics}}, keywords = {{General Physics and Astronomy}}, number = {{2}}, pages = {{710--716}}, publisher = {{AIP Publishing}}, title = {{{Bistability in polymer‐dispersed ferroelectric liquid crystals}}}, doi = {{10.1063/1.356471}}, volume = {{75}}, year = {{1994}}, } @inproceedings{40316, author = {{Crooker, Peter P. and Kitzerow, Heinz-Siegfried and Xu, F.}}, booktitle = {{Liquid Crystal Materials, Devices, and Applications III}}, editor = {{Shashidhar, Ranganathan}}, issn = {{0277-786X}}, publisher = {{SPIE}}, title = {{{Polymer-dispersed cholesteric liquid crystals}}}, doi = {{10.1117/12.172123}}, year = {{1994}}, } @article{40325, author = {{Kitzerow, Heinz-Siegfried}}, issn = {{0267-8292}}, journal = {{Liquid Crystals}}, keywords = {{Condensed Matter Physics, General Materials Science, General Chemistry}}, number = {{1}}, pages = {{1--31}}, publisher = {{Informa UK Limited}}, title = {{{Polymer-dispersed liquid crystals From the nematic curvilinear aligned phase to ferroelectric films}}}, doi = {{10.1080/02678299408036517}}, volume = {{16}}, year = {{1994}}, } @article{40323, author = {{Xu, F. and Kitzerow, Heinz-Siegfried and Crooker, P. P.}}, issn = {{1063-651X}}, journal = {{Physical Review E}}, number = {{4}}, pages = {{3061--3068}}, publisher = {{American Physical Society (APS)}}, title = {{{Director configurations of nematic-liquid-crystal droplets: Negative dielectric anisotropy and parallel surface anchoring}}}, doi = {{10.1103/physreve.49.3061}}, volume = {{49}}, year = {{1994}}, } @article{40317, abstract = {{ 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. }}, author = {{Jain, Sukhmal C. and Kitzerow, Heinz-Siegfried}}, issn = {{0021-4922}}, journal = {{Japanese Journal of Applied Physics}}, keywords = {{General Physics and Astronomy, General Engineering}}, number = {{5A}}, publisher = {{IOP Publishing}}, title = {{{A New Method to Align Smectic Liquid Crystals by Photo-Polymerization}}}, doi = {{10.1143/jjap.33.l656}}, volume = {{33}}, year = {{1994}}, }