@article{4044, abstract = {{A simulation environment for metallic nanostructures based on the Discontinuous Galerkin Time Domain method is presented. The model is used to compute the linear and nonlinear optical response of split ring resonators and to study physical mechanisms that contribute to second harmonic generation.}}, author = {{Grynko, Yevgen and Förstner, Jens and Meier, Torsten}}, issn = {{1825-1242}}, journal = {{AAPP | Atti della Accademia Peloritana dei Pericolanti}}, keywords = {{tet_topic_numerics, tet_topic_shg, tet_topic_meta}}, number = {{1}}, title = {{{Application of the discontinous Galerkin time domain method to the optics of metallic nanostructures}}}, doi = {{10.1478/C1V89S1P041}}, volume = {{89}}, year = {{2011}}, } @article{4091, abstract = {{We present a nonequilibrium ab initio method for calculating nonlinear and nonlocal optical effects in metallic slabs with a thickness of several nanometers. The numerical analysis is based on the full solution of the time‐dependent Kohn–Sham equations for a jellium system and allows to study the optical response of metal electrons subject to arbitrarily shaped intense light pulses. We find a strong localization of the generated second‐harmonic current in the surface regions of the slabs. }}, author = {{Wand, Mathias and Schindlmayr, Arno and Meier, Torsten and Förstner, Jens}}, issn = {{1521-3951}}, journal = {{Physica Status Solidi B}}, keywords = {{tet_topic_shg}}, number = {{4}}, pages = {{887--891}}, publisher = {{Wiley-VCH}}, title = {{{Simulation of the ultrafast nonlinear optical response of metal slabs}}}, doi = {{10.1002/pssb.201001219}}, volume = {{248}}, year = {{2011}}, } @article{4543, abstract = {{The vibrational properties of the LiNbO3 (0001) surfaces have been investigated both from first principles and with Raman spectroscopy measurements. Firstly, the phonon modes of bulk and of the (0001) surface are calculated by means of the density functional theory. Our calculations reveal the existence of localised vibrational modes both at the positive and at the negative surface. The surface vibrations are found at energies above and within the bulk bands. Phonon modes localised at the positive and at the negative surface differ substantially. In a second step, the Raman spectra of LiNbO3 bulk and of the two surfaces have been measured. Raman spectroscopy is shown to be sensitive to differences between bulk and surface and between positive and negative surface. The calculated and measured frequencies are in agreement within the error of the method.}}, author = {{Sanna, S. and Berth, Gerhard and Hahn, W. and Widhalm, A. and Zrenner, Artur and Schmidt, Wolf Gero}}, issn = {{0015-0193}}, journal = {{Ferroelectrics}}, number = {{1}}, pages = {{1--8}}, publisher = {{Informa UK Limited}}, title = {{{Localised Phonon Modes at LiNbO3(0001) Surfaces}}}, doi = {{10.1080/00150193.2011.594396}}, volume = {{419}}, year = {{2011}}, } @inproceedings{4122, abstract = {{We experimentally and theoretically investigate injection currents generated by femtosecond single-color circularly-polarized laser pulses in (110)-oriented GaAs quantum wells. The current measurements are performed by detecting the emitted Terahertz radiation at room temperature. The microscopic theory is based on a 14 x 14 k • p band-structure calculation in combination with the multi-subband semiconductor Bloch equations. For symmetric GaAs quantum wells grown in (110) direction, an oscillatory dependence of the injection currents on the exciting photon energy is obtained. The results of the microscopic theory are in good agreement with the measurements. }}, author = {{Duc, H. T. and Pochwala, M. and Förstner, Jens and Meier, Torsten and Priyadarshi, S. and Racu, A. M. and Pierz, K. and Siegner, U. and Bieler, M.}}, booktitle = {{Ultrafast Phenomena in Semiconductors and Nanostructure Materials XV}}, editor = {{Tsen, Kong-Thon and Song, Jin-Joo and Betz, Markus and Elezzabi, Abdulhakem Y.}}, keywords = {{tet_topic_qw}}, publisher = {{SPIE}}, title = {{{Injection currents in (110)-oriented GaAs/AlGaAs quantum wells: recent progress in theory and experiment}}}, doi = {{10.1117/12.876972}}, volume = {{7937}}, year = {{2011}}, } @article{4046, abstract = {{We demonstrate by spin quantum beat spectroscopy that in undoped symmetric (110)-oriented GaAs/AlGaAs single quantum wells, even a symmetric spatial envelope wave function gives rise to an asymmetric in-plane electron Land´e g-factor. The anisotropy is neither a direct consequence of the asymmetric in-plane Dresselhaus splitting nor a direct consequence of the asymmetric Zeeman splitting of the hole bands, but rather it is a pure higher-order effect that exists as well for diamond-type lattices. The measurements for various well widths are very well described within 14 × 14 band k·p theory and illustrate that the electron spin is an excellent meter variable for mapping out the internal—otherwise hidden—symmetries in two-dimensional systems. Fourth-order perturbation theory yields an analytical expression for the strength of the g-factor anisotropy, providing a qualitative understanding of the observed effects.}}, author = {{Hübner, J. and Kunz, S. and Oertel, S. and Schuh, D. and Pochwała, M. and Duc, H. T. and Förstner, Jens and Meier, Torsten and Oestreich, M.}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, keywords = {{tet_topic_qw}}, number = {{4}}, pages = {{041301(R)}}, publisher = {{American Physical Society (APS)}}, title = {{{Electron g-factor anisotropy in symmetric (110)-oriented GaAs quantum wells}}}, doi = {{10.1103/physrevb.84.041301}}, volume = {{84}}, year = {{2011}}, } @article{43202, abstract = {{For numerous applications, the computation and provision of exact derivative information plays an important role for optimizing the considered system. This paper introduces the technique of algorithmic differentiation, a method to compute derivatives of arbitrary order within working precision. This derivative information will be combined with a calculus-based optimization algorithm to optimize a non-trivially shaped laser pulse which coherently steers the electron dynamics in a semiconductor quantum wire. Numerical results illustrating the cost for the derivative computation and the optimization process are presented and discussed.}}, author = {{Meier, Torsten and Reichelt, Matthias and Walther, A.}}, journal = {{Photonics and Nanostructures - Fundamentals and Applications}}, number = {{4}}, pages = {{328--336}}, publisher = {{Elsevier}}, title = {{{Calculus-based optimization of the electron dynamics in nanostructures}}}, doi = {{10.1016/j.photonics.2011.03.006}}, volume = {{9}}, year = {{2011}}, } @book{57343, editor = {{Marchetti, Andreas and Clouet, Louis-Marie}}, pages = {{304}}, publisher = {{Nomos}}, title = {{{Europa und die Welt 2020: Entwicklungen und Tendenzen}}}, volume = {{74}}, year = {{2011}}, } @article{57378, author = {{Bürgel, Christoph}}, journal = {{Hispanorama }}, pages = {{67--76}}, title = {{{Ojalá viva el subjuntivo! – Grammatik und didaktische Transformation des subjuntivo für den Spanischunterricht}}}, volume = {{131}}, year = {{2011}}, } @article{57376, author = {{Bürgel, Christoph}}, journal = {{Zeitschrift für Romanische Sprachen und ihre Didaktik}}, number = {{1}}, pages = {{27--44}}, title = {{{Qu'est-ce que c'est génial! – Formate des kommunikativ-dialogischen Engagements}}}, volume = {{5}}, year = {{2011}}, } @inbook{56052, author = {{Priesching, Nicole}}, booktitle = {{ Theologie, wohin? Blicke von außen und von innen}}, editor = {{Garhammer, Erich}}, pages = {{295–322}}, title = {{{Herz-Jesu-Verehrung. Ein Kult im Spannungsfeld von Frömmigkeit und Politik}}}, year = {{2011}}, } @inproceedings{55044, author = {{Ngonga Ngomo, Axel-Cyrille and Heino, Norman and Lyko, Klaus and Speck, René and Kaltenböck, Martin}}, booktitle = {{The Semantic Web–ISWC 2011: 10th International Semantic Web Conference, Bonn, Germany, October 23-27, 2011, Proceedings, Part II 10}}, pages = {{189–204}}, title = {{{Scms–semantifying content management systems}}}, year = {{2011}}, } @inproceedings{56055, author = {{Köster, Carolin and Brandl-Bredenbeck, Hans Peter and Kämpfe, Astrid}}, booktitle = {{Dokumentation 16. Bundesweiter Kongress Armut und Gesundheit. Verwirklichungschancen für Gesundheit}}, publisher = {{Gesundheit Berlin-Brandenburg}}, title = {{{Studium heute: Gesundheitsfördernd oder -gefährdend? Eine Lebensstilanalyse}}}, year = {{2011}}, } @inbook{56045, author = {{Kämpfe, Astrid and Kehne, Miriam}}, booktitle = {{Book of proceedings: Moving People, Moving Forward. World Congress of the International Association of Physical Education in Higher Education 2011}}, editor = {{MacPhail, A. and O´Sullivan, M.}}, pages = {{513--534}}, publisher = {{University of Limerick}}, title = {{{Measuring physical activity of children - Development of a new self-report questionnaire}}}, year = {{2011}}, } @article{45167, author = {{Klenk, J. and Büchele, G. and Rapp, K. and Franke, Sebastian and Peter, R.}}, journal = {{Journal of Epidemiology and Community Health. JECH Online First, published on February 15, 2011}}, title = {{{(the ActiFE Study Group). Walking on sunshine: effect of weather conditions on physical activity in older people}}}, doi = {{10.1136/jech.2010.128090}}, year = {{2011}}, } @misc{57621, author = {{Bonhoeffer, Dietrich }}, publisher = {{Fortress Press}}, title = {{{Theological Education Underground 1937-1939}}}, volume = {{15}}, year = {{2011}}, } @inproceedings{37002, abstract = {{HDL-mutation based fault injection and analysis is considered as an important coverage metric for measuring the quality of design simulation processes [20, 3, 1, 2]. In this work, we try to solve the problem of automatic simulation data generation targeting HDL mutation faults. We follow a search based approach and eliminate the need for symbolic execution and mathematical constraint solving from existing work. An objective cost function is defined on the test input space and serves the guidance of search for fault-detecting test data. This is done by first mapping the simulation traces under a test onto a control and data flow graph structure which is extracted from the design. Then the progress of fault detection can be measured quantitatively on this graph to be the cost value. By minimizing this cost we approach the target test data. The effectiveness of the cost function is investigated under an example neighborhood search scheme. Case study with a floating point arithmetic IP design has shown that the cost function is able to guide effectively the search procedure towards a fault-detecting test. The cost calculation time as the search overhead was also observed to be minor compared to the actual design simulation time.}}, author = {{Xie, Tao and Müller, Wolfgang and Letombe, Florian}}, booktitle = {{Proceedings of Euromicro DSD 2011}}, isbn = {{978-1-4577-1048-3}}, keywords = {{Hardware design languages, Cost function, Computational modeling, Fault detection, Data models, Analytical models, Testing}}, publisher = {{IEEE}}, title = {{{HDL-Mutation Based Simulation Data Generation by Propagation Guided Search}}}, doi = {{10.1109/DSD.2011.83}}, year = {{2011}}, } @inbook{58877, author = {{Milkov, Nikolay}}, booktitle = {{Sex, Love, and Friendship}}, editor = {{ Leigh McEvoy, Adrianne}}, isbn = {{978-90-420-3368-9}}, pages = {{155–165}}, publisher = {{Brill}}, title = {{{Sexual Experience}}}, doi = {{10.1163/9789401200684_019}}, volume = {{232}}, year = {{2011}}, } @article{33564, author = {{Rezat, Sara}}, journal = {{Didaktik Deutsch}}, number = {{31}}, pages = {{50--67}}, title = {{{Schriftliches Argumentieren. Zur Ontogenese konzessiver Argumentationskompetenz}}}, year = {{2011}}, } @inproceedings{36999, author = {{Becker, Markus and Zabel, Henning and Müller, Wolfgang and Elfeky, Ahmed}}, title = {{{Virtual Prototyping software-intensiver mechatronischer Systeme - Eine Fallstudie}}}, year = {{2011}}, } @book{58988, author = {{Garske, Volker}}, title = {{{Weihnachten - Die Geburt Jesu (Mt 1,18-2,23). Interpretationen - Unterrichtsmodell}}}, year = {{2011}}, }