@inbook{44880, author = {{Tulodziecki, G. and Herzig, Bardo and Grafe, S.}}, booktitle = {{Schulisches Lehren und Lernen. Pädagogische Theorie an Praxisbeispielen}}, editor = {{Mägdefrau, J.}}, pages = {{10--32}}, publisher = {{Verlag Julius Klinkhardt}}, title = {{{Leistungsmessung und Leistungsbeurteilung}}}, year = {{2010}}, } @inbook{44882, author = {{Herzig, Bardo}}, booktitle = {{Handbuch Schulentwicklung}}, editor = {{Bohl, T. and Helsper, W. and Holtappels, H. G. and Schelle, C.}}, pages = {{342--345}}, publisher = {{Klinkhardt}}, title = {{{Digitale Medien im Unterricht}}}, year = {{2010}}, } @inbook{44883, author = {{Herzig, Bardo}}, booktitle = {{Weißbuch Prävention 2010/2011 - "Gesund jung?!" }}, pages = {{205--211}}, publisher = {{Springer}}, title = {{{Problematischer Medienkonsum - Statements}}}, year = {{2010}}, } @book{44881, author = {{Tulodziecki, G. and Herzig, Bardo}}, publisher = {{kopaed}}, title = {{{Mediendidaktik. Medienverwendung in Lehr- und Lernprozessen}}}, year = {{2010}}, } @inbook{44885, author = {{Herzig, Bardo and Grafe, S.}}, booktitle = {{Digitale Lernwelten}}, editor = {{Hugger, K. and Walber, M.}}, pages = {{115--127}}, publisher = {{VS Verlag}}, title = {{{Digitale Lernwelten und Schule}}}, year = {{2010}}, } @article{44889, author = {{Aßmann, S. and Herzig, Bardo and Grafe, S.}}, journal = {{SchulTrends. Sonderausgabe der SchulVerwaltung (2010) 1}}, pages = {{2--5}}, title = {{{Entwicklung von Medienkompetenz als schulische Aufgabe. Einblicke in medienbezogene Lernumfelder von Kindern und Jugendlichen}}}, year = {{2010}}, } @techreport{44886, author = {{Herzig, Bardo and Aßmann, S. and Grafe, S.}}, pages = {{293}}, publisher = {{Universität Paderborn}}, title = {{{Medienbezogene Lernumfelder von Kindern und Jugendlichen}}}, year = {{2010}}, } @article{57380, author = {{Bürgel, Christoph}}, journal = {{ französisch heute 4}}, pages = {{171--177}}, title = {{{Apprendre à déchiffrer un texte – Ein Beitrag zur Förderung der Lesekompetenz}}}, year = {{2010}}, } @article{45169, author = {{Denkinger, M.D. and Franke, Sebastian and Rapp, K. and Weinmayr, G. and Duran-Tauleria, E. and Nikolaus, T. and Peter, R.}}, journal = {{BMC Geriatrics}}, number = {{50}}, title = {{{(for ActiFE Ulm Study Group). Accelerometer-based physical activity in a large observational cohort - study protocol and design of the Activity and Function of the Elderly in Ulm (ActiFE Ulm) study}}}, doi = {{10.1186/1471-2318-10-50}}, volume = {{10}}, year = {{2010}}, } @article{45170, author = {{Hennemann, T. and Hillenbrand, C. and Wilbert, J. and Franke, Sebastian and Spieß, R. and Jürgens, J. and Görgens, G.}}, journal = {{Empirische Sonderpädagogik}}, pages = {{36--49}}, title = {{{Kompetenzen und Risiken in der Transition in die Hauptschule – eine Querschnittsuntersuchung von Schülerinnen und Schülern der 5. Jahrgangsstufen}}}, doi = {{10.25656/01:9353}}, volume = {{4}}, year = {{2010}}, } @article{45168, author = {{Denkinger, M.D. and Igl, W. and Lukas, A. and Bader, A. and Bailer, S. and Franke, Sebastian and Denkinger, C.M. and Nikolaus, T. and Jamour, M.}}, journal = {{Journal of the American Geriatric Society}}, number = {{4}}, pages = {{664--673}}, title = {{{Relationship between fear of falling and outcomes of an inpatient geriatric rehabilitation population - fear the fear of falling}}}, volume = {{58}}, year = {{2010}}, } @article{58593, abstract = {{AbstractThe transition metal complexes with the ligand 1,3‐bis(N,N,N′,N′‐tetramethylguanidino)propane (btmgp), [Mn(btmgp)Br2] (1), [Co(btmgp)Cl2] (2), [Ni(btmgp)I2] (3), [Zn(btmgp)Cl2] (4), [Zn(btmgp)(O2CCH3)2] (5), [Cd(btmgp)Cl2] (6), [Hg(btmgp)Cl2] (7) and [Ag2(btmgp)2][ClO4]2·2MeCN (8), were prepared and characterised for the first time. The stoichiometric reaction of the corresponding water‐free metal salts with the ligand btmgp in dry MeCN or THF resulted in the straightforward formation of the mononuclear complexes 1–7 and the binuclear complex 8. In complexes with MII the metal ion shows a distorted tetrahedral coordination whereas in 8, the coordination of the MI ion is almost linear. The coordination behavior of btmgp and resulting structural parameters of the corresponding complexes were discussed in an comparative approach together with already described complexes of btmgp and the bisguanidine ligand N1,N2‐bis(1,3‐dimethylimidazolidin‐2‐ylidene)‐ethane‐1,2‐diamine (DMEG2e), respectively.}}, author = {{Neuba, Adam and Herres‐Pawlis, Sonja and Seewald, Oliver and Börner, Janna and Heuwing, Andreas J. and Flörke, Ulrich and Henkel, Gerald}}, issn = {{0044-2313}}, journal = {{Zeitschrift für anorganische und allgemeine Chemie}}, number = {{15}}, pages = {{2641--2649}}, publisher = {{Wiley}}, title = {{{Systematische Studie zu den Koordinationseigenschaften des Guanidin‐Liganden Bis(tetramethylguanidino)propan mit den Metallen Mangan, Cobalt, Nickel, Zink, Cadmium, Quecksilber und Silber}}}, doi = {{10.1002/zaac.201000133}}, volume = {{636}}, year = {{2010}}, } @article{13581, author = {{Wippermann, S. and Schmidt, Wolf Gero and Bechstedt, F. and Chandola, S. and Hinrichs, K. and Gensch, M. and Esser, N. and Fleischer, K. and McGilp, J. F.}}, issn = {{1862-6351}}, journal = {{physica status solidi (c)}}, number = {{2}}, pages = {{133--136}}, title = {{{Optical anisotropy of Si(111)-(4 × 1)/(8 × 2)-In nanowires calculated fromfirst-principles}}}, doi = {{10.1002/pssc.200982413}}, volume = {{7}}, year = {{2010}}, } @article{13837, abstract = {{In non-annealed 6H-SiC samples that were electron irradiated at room temperature, a new EPR signal due to a S=1 defect center with exceptionally large zero-field splitting (D = +652•10-4 cm-1) has been observed under illumination. A positive sign of D demonstrates that the spin-orbit contribution to the zero-field splitting exceeds by far that of the spin-spin interaction. A principal axis of the fine structure tilted by 59° against the crystal c-axis as well as the exceptionally high zero-field splitting D can be qualitatively understood by the occurrence of additional close-lying defect levels in defect clusters resulting in comparatively large second-order spin-orbit coup¬ling. A tentative assignment to vacancy clusters is supported by the observed annealing behavior. }}, author = {{Scholle, Andreas and Greulich-Weber, Siegmund and Rauls, Eva and Schmidt, Wolf Gero and Gerstmann, Uwe}}, issn = {{1662-9752}}, journal = {{Materials Science Forum}}, pages = {{403--406}}, title = {{{Fine Structure of Triplet Centers in Room Temperature Irradiated 6H-SiC}}}, doi = {{10.4028/www.scientific.net/msf.645-648.403}}, volume = {{645-648}}, year = {{2010}}, } @article{13831, author = {{Speiser, E. and Chandola, S. and Hinrichs, K. and Gensch, M. and Cobet, C. and Wippermann, S. and Schmidt, Wolf Gero and Bechstedt, F. and Richter, W. and Fleischer, K. and McGilp, J. F. and Esser, N.}}, issn = {{0370-1972}}, journal = {{physica status solidi (b)}}, number = {{8}}, pages = {{2033--2039}}, title = {{{Metal-insulator transition in Si(111)-(4 × 1)/(8 × 2)-In studied by optical spectroscopy}}}, doi = {{10.1002/pssb.200983961}}, volume = {{247}}, year = {{2010}}, } @article{13829, author = {{Krivosheeva, A.V. and Sanna, S. and Schmidt, Wolf Gero}}, issn = {{0927-0256}}, journal = {{Computational Materials Science}}, number = {{4}}, pages = {{895--898}}, title = {{{First-principles investigation of CO adsorption on Pt/Ge(001)-(4×2)}}}, doi = {{10.1016/j.commatsci.2010.06.043}}, volume = {{49}}, year = {{2010}}, } @article{4123, abstract = {{GaAs-based semiconductor microdisks with high quality whispering gallery modes (Q44000) have been fabricated.A layer of self-organized InAs quantumdots (QDs) served as a light source to feed the optical modes at room temperature. In order to achieve frequency tuning of the optical modes, the microdisk devices have been immersed in 4 – cyano – 4´-pentylbiphenyl (5CB), a liquid crystal(LC) with a nematic phase below the clearing temperature of TC≈34°C .We have studied the device performance in the temperature rangeof T=20-50°C, in order to investigate the influence of the nematic–isotropic phase transition on the optical modes. Moreover,we havea pplied an AC electric field to the device,which leads in the nematic phase to a reorientation of the anisotropic dielectric tensor of the liquid crystal.This electrical anisotropy can be used to achieve electrical tunability of the optical modes.Using the finite-difference time domain (FDTD) technique with an anisotropic material model, we are able to describe the influence of the liquid crystal qualitatively.}}, author = {{Piegdon, Karoline A. and Offer, Matthias and Lorke, Axel and Urbanski, Martin and Hoischen, Andreas and Kitzerow, Heinz-Siegfried and Declair, Stefan and Förstner, Jens and Meier, Torsten and Reuter, Dirk and Wieck, Andreas D. and Meier, Cedrik}}, issn = {{1386-9477}}, journal = {{Physica E: Low-dimensional Systems and Nanostructures}}, keywords = {{tet_topic_qd, tet_topic_microdisk}}, number = {{10}}, pages = {{2552--2555}}, publisher = {{Elsevier BV}}, title = {{{Self-assembled quantum dots in a liquid-crystal-tunable microdisk resonator}}}, doi = {{10.1016/j.physe.2009.12.051}}, volume = {{42}}, year = {{2010}}, } @inproceedings{4167, abstract = {{The electromagnetic field in the vicinity of sharp edges needs a special treatment in numeric calculation whenever accurate, fast converging results are necessary. One of the fundamental works concerning field singularities has been proposed in 1972 [1] and states that the electromagnetic energy density must be integrable over any finite domain, even if this domain contains singularities. It is shown, that the magnetic field H(, ϕ) and electric field E(, ϕ) are proportional to ∝ (t−1) for  → 0. The variable  is the distance to the edge and t has to fulfill the integrability condition and thus is restricted to 0 < t < 1. This result is often used to reduce the error corresponding to the singularity without increasing the numerical effort [2 - 5]. For this purpose, a correction factor K is estimated by inserting the proportionality into the wave equation. It is shown, that this method improves the accuracy of the result significantly, however the order of convergence is often not studied. In [4] a method to modify the material parameters in order to use analytic results to improve the numeric calculation is presented. In this contribution we will - inspired by the scheme given in [4] - develop a new method to estimate a correction factor for perfect conducting materials (PEC) and demonstrate the improvement of the results compared to the standard edge correction. Therefore analytic results (comparable to [1]) are consequently merged with the scheme in [4]. The main goal of this work is the calculation of the second harmonic generation (SHG) in the wave response of so-called metamaterials [6]. Frequently these structures contain sharp metallic edges with field singularities at the interfaces which have a strong impact on the SHG signals. Thus, an accurate simulation of singularities is highly important. However, the following approach can also be applied to many other setups, and one of them is shown in the example below.}}, author = {{Classen, C and Förstner, Jens and Meier, Torsten and Schuhmann, R}}, booktitle = {{2010 IEEE Antennas and Propagation Society International Symposium}}, isbn = {{9781424449675}}, keywords = {{tet_topic_numerics}}, location = {{Toronto, ON, Canada}}, publisher = {{IEEE}}, title = {{{Enhanced FDTD edge correction for nonlinear effects calculation}}}, doi = {{10.1109/aps.2010.5562017}}, year = {{2010}}, } @article{4172, abstract = {{Microdisks made from GaAs with embedded InAs quantum dots are immersed in the liquid crystal 4-cyano-4’-pentylbiphenyl (5CB). The quantum dots serve as emitters feeding the optical modes of the photonic cavity. By changing temperature, the liquid crystal undergoes a phase transition from the isotropic to the nematic state, which can be used as an effective tuning mechanism of the photonic modes of the cavity. In the nematic state, the uniaxial electrical anisotropy of the liquid crystal molecules can be exploited for orienting the material in an electric field, thus externally controlling the birefringence of the material. Using this effect, an electric field induced tuning of the modes is achieved. Numerical simulations using the finite-differences time-domain (FDTD) technique employing an anisotropic dielectric medium allow to understand the alignment of the liquid crystal molecules on the surface of the microdisk resonator.}}, author = {{Piegdon, Karoline A. and Declair, Stefan and Förstner, Jens and Meier, Torsten and Matthias, Heiner and Urbanski, Martin and Kitzerow, Heinz-Siegfried and Reuter, Dirk and Wieck, Andreas D. and Lorke, Axel and Meier, Cedrik}}, issn = {{1094-4087}}, journal = {{Optics Express}}, keywords = {{tet_topic_qd, tet_topic_microdisk}}, number = {{8}}, publisher = {{The Optical Society}}, title = {{{Tuning quantum-dot based photonic devices with liquid crystals}}}, doi = {{10.1364/oe.18.007946}}, volume = {{18}}, year = {{2010}}, } @article{44807, author = {{Freitag, Christine and Rölker, Sarah}}, issn = {{0947-9732}}, journal = {{Tertium Comparationis 1/2010}}, pages = {{24--49}}, publisher = {{Waxmann}}, title = {{{Was ist eigentlich ein Kontext? Theoretische Überlegungen und empirische Annäherungen an die Frage der Kontextualisierung von Schule}}}, year = {{2010}}, }