@article{989, author = {{Karl, Holger}}, journal = {{Report of AG Mobikom WG7}}, title = {{{An overview of energy-efficiency techniques for mobile communication systems}}}, year = {{2003}}, } @inproceedings{991, author = {{Gross, James and Klaue, Jirka and Karl, Holger and Wolisz, Adam}}, booktitle = {{Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th}}, pages = {{2481----2485}}, title = {{{Subcarrier allocation for variable bit rate video streams in wireless OFDM systems}}}, year = {{2003}}, } @inproceedings{994, author = {{Karl, Holger and Löbbers, Marc and Nieberg, Tim}}, booktitle = {{Proc. Dutch Technology Foundation ProRISC Workshop on Circuits, Systems and Signal Processing}}, title = {{{A data aggregation framework for wireless sensor networks}}}, year = {{2003}}, } @inproceedings{999, author = {{Klaue, Jirka and Gross, James and Karl, Holger and Wolisz, Adam}}, booktitle = {{3rd Workshop of Applications and Services in Wireless Networks 2003 (ASWN 2003)}}, title = {{{Semantic-aware link layer scheduling of mpeg-4 video streams in wireless systems}}}, year = {{2003}}, } @article{4161, author = {{Hehenkamp, Burkhard}}, issn = {{0219-1989}}, journal = {{International Game Theory Review}}, number = {{03}}, pages = {{249--262}}, publisher = {{World Scientific Pub Co Pte Lt}}, title = {{{Equilibrium Selection in the Two-Population KMR Model}}}, doi = {{10.1142/s0219198903001045}}, volume = {{05}}, year = {{2003}}, } @article{4288, abstract = {{We report the experimental observation and the theoretical modeling of self-induced-transparency signatures such as nonlinear transmission, pulse retardation and reshaping, for subpicosecond pulse propagation in a 2-mm-long InGaAs quantum-dot ridge waveguide in resonance with the excitonic ground-state transition at 10 K. The measurements were obtained by using a cross-correlation frequency-resolved optical gating technique which allows us to retrieve the field amplitude of the propagating pulses.}}, author = {{Schneider, S. and Borri, P. and Langbein, W. and Woggon, U. and Förstner, Jens and Knorr, A. and Sellin, R. L. and Ouyang, D. and Bimberg, D.}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, keywords = {{tet_topic_qd}}, number = {{18}}, pages = {{3668--3670}}, publisher = {{AIP Publishing}}, title = {{{Self-induced transparency in InGaAs quantum-dot waveguides}}}, doi = {{10.1063/1.1624492}}, volume = {{83}}, year = {{2003}}, } @article{4290, abstract = {{The nonlinear propagation of subpicosecond pulses resonant to the hh 1s exciton in Bragg-periodic multiple quantum wells is investigated experimentally and theoretically. We show coherent pulse breakup and its suppression for increasing pulse intensity in good agreement with calculations based on the semiconductor Maxwell-Bloch equations. For highly nonlinear excitation, pulse compression is observed which is strongly enhanced by the additional contribution of self-phase modulation in the barrier and substrate material.}}, author = {{Nielsen, N. C. and Kuhl, J. and Schaarschmidt, M. and Förstner, Jens and Knorr, A. and Koch, S. W. and Gibbs, H. M. and Khitrova, G. and Giessen, H.}}, issn = {{1610-1634}}, journal = {{physica status solidi (c)}}, keywords = {{tet_topic_qw}}, number = {{5}}, pages = {{1484--1487}}, publisher = {{Wiley}}, title = {{{Pulse propagation in Bragg-resonant multiple quantum wells: from pulse breakup to compression}}}, doi = {{10.1002/pssc.200303207}}, year = {{2003}}, } @article{4292, abstract = {{We outline a theoretical description of the absorption linewidth of quantum well intersubband transitions by solving Maxwell’s equations for a non-local susceptibility including many particle effects. We show that the intersubband absorption results from a complex interplay between mean-field effects, dephasing contributions and light propagation effects, all being very sensitive to subband dispersion.}}, author = {{Waldmüller, Inès and Woerner, Michael and Förstner, Jens and Knorr, Andreas}}, issn = {{0370-1972}}, journal = {{physica status solidi (b)}}, keywords = {{tet_topic_qw}}, number = {{3}}, pages = {{474--477}}, publisher = {{Wiley}}, title = {{{Theory of the lineshape of quantum well intersubband transitions: optical dephasing and light propagation effects}}}, doi = {{10.1002/pssb.200303165}}, volume = {{238}}, year = {{2003}}, } @article{4294, abstract = {{The phonon-induced dephasing dynamics of semiconductor quantum dots during nonlinear optical excitation is studied using quantum kinetic equations. We find that despite the decoherence process Rabi oscillations occur even for relatively long pulse durations and that their signatures in pump-probe experiments only get suppressed for high input pulse areas.}}, author = {{Förstner, Jens and Weber, Carsten and Danckwerts, Juliane and Knorr, Andreas}}, issn = {{0370-1972}}, journal = {{physica status solidi (b)}}, keywords = {{tet_topic_qd}}, number = {{3}}, pages = {{419--422}}, publisher = {{Wiley}}, title = {{{Phonon-induced damping of Rabi oscillations in semiconductor quantum dots}}}, doi = {{10.1002/pssb.200303155}}, volume = {{238}}, year = {{2003}}, } @inproceedings{4296, abstract = {{A non-Markovian quantum kinetic theory of the coupled electron-phonon system in semiconductor quantum dots is used to analyze the nonlinear dipole decoherence and light propagation dynamics for arbitrary pulse strengths and lengths.}}, author = {{Förstner, Jens and Weber, C. and Danckwerts, J. and Knorr, A.}}, booktitle = {{Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.}}, isbn = {{1557527490}}, keywords = {{tet_topic_qd}}, location = {{Baltimore, MD, USA, USA }}, publisher = {{IEEE}}, title = {{{Damping of electron density Rabi-oscillations and self-induced-transparency in semiconductor quantum dots}}}, doi = {{10.1109/qels.2003.238120}}, year = {{2003}}, } @inproceedings{4298, abstract = {{The linewidth of intersubband transitions resulting from simultaneous action of many-body contributions and radiative damping is analyzed. The processes are non-additive and a self-consistent treatment is necessary to explain recent experiments.}}, author = {{Waldmuller, I. and Förstner, Jens and Knorr, A. and Woerner, M. and Reimann, K. and Kaindl, R.A. and Hey, R. and Ploog, K.H.}}, booktitle = {{Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.}}, isbn = {{1557527490}}, keywords = {{tet_topic_qw}}, location = {{ Baltimore, MD, (USA)}}, publisher = {{IEEE}}, title = {{{Correlated influence of carrier-carrier/carrier-phonon interaction and radiative damping on semiconductor intersubband transitions}}}, doi = {{10.1109/qels.2003.238217}}, year = {{2003}}, } @article{4322, abstract = {{We present the experimental observation and the theoretical modelling of self-induced transparency signatures such as nonlinear transmission, pulse retardation and reshaping for subpicosecond pulse propagation in a 2 mm-long InGaAs quantum-dot ridge waveguide at 10 K. The measurements were obtained using a cross-correlation frequency resolved optical gating technique which allows us to retrieve the field amplitude of the propagating pulses.}}, author = {{Schneider, S. and Borri, P. and Langbein, W. and Woggon, U. and Förstner, Jens and Knorr, A. and Sellin, R. L. and Ouyang, D. and Bimberg, D.}}, issn = {{1610-1634}}, journal = {{physica status solidi (c)}}, keywords = {{tet_topic_qd}}, number = {{5}}, pages = {{1548--1551}}, publisher = {{Wiley}}, title = {{{Self-induced transparency in InGaAs quantum dot waveguides}}}, doi = {{10.1002/pssc.200303228}}, year = {{2003}}, } @article{5603, author = {{Kabst, Rüdiger and Matiaske, W and Schmelter, A}}, journal = {{Zeitschrift für Personalforschung.}}, number = {{3}}, pages = {{259--277}}, title = {{{Gewinn- und Kapitalbeteiligungen in britischen, französischen und deutschen Unternehmen: Eine institutionalistisch orientierte empirische Untersuchung}}}, volume = {{17}}, year = {{2003}}, } @book{5629, author = {{Schryen, Guido and Herstell, Jan and Schoenen, Markus}}, publisher = {{Deutscher Universitäts-Verlag}}, title = {{{Online Marktforschung im Mittelstand: Analyse von Konsumentenverhalten in 3D-Internet-Welten}}}, year = {{2003}}, } @article{5630, author = {{Schryen, Guido and Herstell, Jan}}, journal = {{IM : die Zeitschrift für Information Management und Consulting}}, number = {{2}}, pages = {{74--77}}, publisher = {{Information Multimedia Communication (IMC)}}, title = {{{Online-Marktforschung - Analyse von Konsumentenverhalten in virtuellen Umgebungen, in: Information Management & Consulting, 18,2}}}, volume = {{18}}, year = {{2003}}, } @inbook{5667, abstract = {{Voting via the Internet is part of electronic government and electronic democracy. However, there are many obstacles which have to be overcome, especially legal restrictions have to be transformed into technical and security solutions. In the first part the article discusses advantages and disadvantages of Internet elections, shows different application fields, and presents important international pilot schemes (political and business ones). in the second part, due to democratic basic principles, technological security aspects are worked out.}}, author = {{Schryen, Guido}}, booktitle = {{Proceedings of the IADIS International Conference WWW Internet 2003. vol. 2}}, keywords = {{Internet Voting, Online polls, E-Democracy, Security}}, pages = {{1017--1021}}, publisher = {{IADIS Press}}, title = {{{E-Democracy: Internet Voting}}}, year = {{2003}}, } @inproceedings{5668, abstract = {{Zusammenfassung: Im Rahmen des E-Governments werden zunehmend Internetwahlen diskutiert. Der Beitrag diskutiert zunächst die Vor- und Nachteile derartiger Wahlen und zeigt Anwendungsgebiete sowie durchgeführte Pilotprojekte im politischen wie auch wirtschaftlichen Bereich auf. Im Rahmen eines Anforderungssystems werden anschließend aus demokratischen Wahlgrundsätzen sicherheitstechnologische Anforderungen herausgearbeitet. Zu deren Adressierung werden kryptographischen Wahlkonzepte herangezogen, von denen die wichtigsten vorgestellt werden. Aufgrund der Komplexität der Anforderungslandschaft wird ein sicherheitstechnologisches Strukturmodell vorgestellt, das insbesondere dazu dient, die Sicherheit(skomponenten) eines Wahlsystems systematisch mit den Anforderungen abzugleichen. Der Artikel schließt mit einem Ausblick auf notwendige Untersuchungen.}}, author = {{Schryen, Guido}}, booktitle = {{6. Internationale Tagung Wirtschaftsinformatik}}, keywords = {{Internet-Wahlen, E-Democracy, Sicherheit, Kryptographie}}, pages = {{937--956}}, title = {{{Internet-Wahlen}}}, year = {{2003}}, } @inbook{6497, author = {{Kennerknecht, M. and Kremer, H.-Hugo}}, booktitle = {{Institutionelle Perspektiven beruflicher Bildung (Meilensteine der beruflichen Bildung)}}, editor = {{Achtenhagen, F. and John, E. G.}}, pages = {{373--386}}, title = {{{Planspiel Marmelade - Entwicklung und Implementation}}}, volume = {{2}}, year = {{2003}}, } @article{6498, author = {{Kremer, H.-Hugo}}, journal = {{bwp@ Ausgabe Nr. 4}}, title = {{{Handlungs- und Fachsystematik im Lernfeldkonzept}}}, year = {{2003}}, } @inbook{6499, author = {{Dilger, B. and Kremer, H.-Hugo}}, booktitle = {{Handbuch Lernortkooperation}}, editor = {{Euler, D.}}, pages = {{343--348}}, title = {{{Fortbildungsbegleitende Netzwerke}}}, volume = {{2}}, year = {{2003}}, }