@article{15851, author = {{Ma, Xuekai and Kartashov, Yaroslav Y and Gao, Tingge and Schumacher, Stefan}}, issn = {{1367-2630}}, journal = {{New Journal of Physics}}, title = {{{Controllable high-speed polariton waves in a PT-symmetric lattice}}}, doi = {{10.1088/1367-2630/ab5a9b}}, volume = {{21}}, year = {{2019}}, } @unpublished{13340, abstract = {{Spontaneous formation of transverse patterns is ubiquitous in nonlinear dynamical systems of all kinds. An aspect of particular interest is the active control of such patterns. In nonlinear optical systems this can be used for all-optical switching with transistor-like performance, for example realized with polaritons in a planar quantum-well semiconductor microcavity. Here we focus on a specific configuration which takes advantage of the intricate polarization dependencies in the interacting optically driven polariton system. Besides detailed numerical simulations of the coupled light-field exciton dynamics, in the present paper we focus on the derivation of a simplified population competition model giving detailed insight into the underlying mechanisms from a nonlinear dynamical systems perspective. We show that such a model takes the form of a generalized Lotka-Volterra system for two competing populations explicitly including a source term that enables external control. We present a comprehensive analysis both of the existence and stability of stationary states in the parameter space spanned by spatial anisotropy and external control strength. We also construct phase boundaries in non-trivial regions and characterize emerging bifurcations. The population competition model reproduces all key features of the switching observed in full numerical simulations of the rather complex semiconductor system and at the same time is simple enough for a fully analytical understanding of the system dynamics.}}, author = {{Pukrop, Matthias and Schumacher, Stefan}}, booktitle = {{arXiv:1903.12534}}, title = {{{Externally Controlled Lotka-Volterra Dynamics in a Linearly Polarized Polariton Fluid}}}, year = {{2019}}, } @unpublished{13347, abstract = {{<div> <div> <div> <p>Molecular doping in conjugated polymers is a crucial process for their application in organic photovoltaics and optoelectronics. In the present work we theoretically investigate p-type molecu- lar doping in a series of (poly[2,6-(4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b”]dithiophene)-alt- 4,7-(2,1,3-benzothiadiazole)] (PCPDT-BT) conjugated oligomers with different lengths and three widely-used dopants with different electron affinities, namely F4TCNQ, F6TCNNQ, and CN6-CP. We study in detail the molecular geometry of possible oligomer-dopant complexes and its influence on the doping mechanisms and electronic system properties. We find that the mechanisms of dop- ing and charge transfer observed sensitively depend on the specific geometry of the oligomer-dopant complexes. For a given complex different geometries may exist, some of which show transfer of an entire electron from the oligomer chain onto the dopant molecule resulting in an integer-charge transfer complex, leaving the system in a ground state with broken spin symmetry. In other ge- ometries merely hybridization of oligomer and dopant frontier orbitals occurs with partial charge transfer but spin-symmetric ground state. Considering the resulting electronic density of states both cases may well contribute to an increased electrical conductivity of corresponding film samples while the underlying physical mechanisms are entirely different. </p> </div> </div> </div>}}, author = {{Dong, Chuan-Ding and Schumacher, Stefan}}, title = {{{Molecular Doping of PCPDT-BT Copolymers: Comparison of Molecular Complexes with and Without Integer Charge Transfer}}}, year = {{2019}}, } @article{13343, author = {{Vollbrecht, Joachim and Wiebeler, Christian and Bock, Harald and Schumacher, Stefan and Kitzerow, Heinz-Siegfried}}, issn = {{1932-7447}}, journal = {{The Journal of Physical Chemistry C}}, number = {{7}}, pages = {{4483--4492}}, title = {{{Curved Polar Dibenzocoronene Esters and Imides versus Their Planar Centrosymmetric Homologs: Photophysical and Optoelectronic Analysis}}}, doi = {{10.1021/acs.jpcc.8b10730}}, volume = {{123}}, year = {{2019}}, } @article{50496, abstract = {{Trotz hoher Aktualität und steigender Bedeutung liegen zum Thema Digitalisierung im Sportverein bisher kaum empirische Erkenntnisse vor. Der vorliegende Beitrag setzt sich mit folgenden Fragestellungen auseinander: (i) In welchem Umfang und zu welchem Zweck nutzen Sportvereine digitale Instrumente? (ii) Welche vereinsspezifischen Faktoren determinieren das jeweilige Nutzungsverhalten? Hierzu wurde eine Stichprobe von n=787 Sportvereinen aus Österreich und Deutschland generiert. Es zeigt sich, dass digitale Instrumente vor allem zur internen und externen Kommunikation sowie zur Bewältigung klassischer Verwaltungsaufgaben eingesetzt werden. Das Ausmaß der Nutzung hängt einerseits von vereinsexternen Bedingungen ab. So zeigt sich dahingehend ein Ländereffekt, dass in Deutschland digitale Instrumente stärker genutzt werden als in Österreich. Darüber hinaus haben Auflagen seitens der Verbände zur Verwendung bestimmter Software (z.B. für die Meldung von Wettkampfergebnissen) einen wichtigen Einfluss. Andererseits bestimmen vereinsinterne Faktoren wesentlich das Nutzungsverhalten. Positiv wirken vor allem die Vereinsziele ‚Engagement/Erfolg im Leistungssport‘ und ‚Wollen Vorreiterrolle bei der Digitalisierung einnehmen‘. Negativ wirken eine fehlende Strategie im Umgang mit digitalen Instrumenten sowie die Einschätzung, dass digitale Prozesse nicht zur eigenen Vereinskultur passen. }}, author = {{Riedl, Lars and Ehnold, Peter and Schlesinger, Torsten }}, issn = {{1869-8247}}, journal = {{Sciamus - Sport und Management}}, number = {{4}}, pages = {{21--40}}, title = {{{Digitalisierung im organisierten Sport. Eine Analyse zur Nutzung digitaler Instrumente in Sportvereinen}}}, doi = {{10.24403/jp.1016426}}, year = {{2019}}, } @inproceedings{23764, author = {{Kehne, Franziska and Fechner, Sabine}}, booktitle = {{Naturwissenschaftliche Bildung als Grundlage für berufliche und gesellschaftliche Teilhabe. Gesellschaft für Didaktik der Chemie und Physik, Jahrestagung in Kiel 2018}}, editor = {{Maurer, Christian }}, pages = {{755--758}}, publisher = {{Universität Regensburg}}, title = {{{Enkodierung chemischer Konzepte aus lebenweltlichen Kontexten}}}, year = {{2019}}, } @phdthesis{62824, author = {{Kehne, Franziska}}, publisher = {{Logos Verlag}}, title = {{{Analyse des Transfers von kontextualisiert erworbenem Wissen im Fach Chemie}}}, year = {{2019}}, } @article{40384, author = {{Ferreri, Alessandro and Ansari, V. and Silberhorn, Christine and Sharapova, Polina R.}}, issn = {{2469-9926}}, journal = {{Physical Review A}}, number = {{5}}, publisher = {{American Physical Society (APS)}}, title = {{{Temporally multimode four-photon Hong-Ou-Mandel interference}}}, doi = {{10.1103/physreva.100.053829}}, volume = {{100}}, year = {{2019}}, } @inproceedings{47014, author = {{Güldenpenning, Iris and Weigelt, Matthias and Kunde, W.}}, booktitle = {{Abstractband der 51. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie (asp)}}, editor = {{Stoll, O.}}, location = {{Halle/Saale}}, pages = {{106}}, title = {{{Entstehen durch eine Blicktäuschung Kosten für den Angreifer?}}}, year = {{2019}}, } @article{56023, author = {{Kämpfe, Astrid}}, journal = {{sportpädagogik }}, number = {{5}}, pages = {{2--7}}, title = {{{Hohe Ziele in der Sporthalle - Potenziale und Herausforderungen beim Basketball in der Schule}}}, volume = {{43}}, year = {{2019}}, } @article{57686, author = {{Gabriel, Lena}}, journal = {{sportpädagogik}}, number = {{3+4}}, pages = {{62--67}}, title = {{{Einlassen auf Modern Dance}}}, volume = {{43}}, year = {{2019}}, } @book{57685, author = {{Gabriel, Lena}}, publisher = {{Feldhaus}}, title = {{{Interkulturelle Bewegungserziehung in der Grundschule}}}, year = {{2019}}, } @inbook{57695, author = {{Gabriel, Lena and Teubert, Hilke}}, booktitle = {{Tagungsband, DVS Kommission: Sport & Raum}}, editor = {{Balz, Eckart and Bindel, Tim}}, title = {{{Sportangebote für Flüchtlinge in Sporthallen-Notunterkünften.}}}, year = {{2019}}, } @inproceedings{57727, author = {{Neuhaus, Dorothee and Vogt, S and Boschmann, A and Dosen, S and Baumeister, J}}, booktitle = {{Sportmotorik 2019. Adaption, Lernen und virtuelle Welten. Abstractband zur 16. Jahrestagung der dvs-Sektion Sportmotorik vom 16.-18. Januar 2019 in Bern}}, editor = {{Klostermann, A and Vater, C and Hossner, E.-J}}, pages = {{48}}, publisher = {{Eigenverlag}}, title = {{{Effects of an augmented reality training using a myoelectric hand prosthesis: a pilot study}}}, year = {{2019}}, } @inproceedings{57726, author = {{Vogt, S and Neuhaus, Dorothee and Baumeister, J}}, booktitle = {{Sportmotorik 2019. Adaption, Lernen und virtuelle Welten. Abstractband zur 16. Jahrestagung der dvs-Sektion Sportmotorik vom 16.-18. Januar 2019 in Bern}}, editor = {{Klostermann, A and Vater, C and Hossner, E.-J}}, pages = {{48}}, publisher = {{Eigenverlag}}, title = {{{Effects of different visual conditions on standing balance in a virtual reality scene: a pilot study}}}, year = {{2019}}, } @article{57729, author = {{Vogt, S and Skjaeret Maroni, N and Neuhaus, Dorothee and Baumeister, J}}, journal = {{International Journal of Medical Informatics}}, pages = {{46--58}}, title = {{{Virtual Reality Interventions for Balance Prevention and Rehabilitation after Musculoskeletal Lower Limb Impairments in Young up to Middle-Aged Adults: A Comprehensive Review on Used Technology, Balance Outcome Measures and Observed Effects}}}, volume = {{126}}, year = {{2019}}, } @article{57728, author = {{Gokeler, A and Neuhaus, Dorothee and Benjaminse, A and Grooms, D.R and Baumeister, J}}, journal = {{Sports Medicine}}, number = {{6}}, pages = {{853--865}}, title = {{{Principles of Motor Learning to Support Neuroplasticity After ACL Injury: Implications for Optimizing Performance and Reducing Risk of Second ACL Injury}}}, volume = {{49}}, year = {{2019}}, } @article{13282, author = {{Lin, Zemeng and Huang, Lingling and Xu, Zhen Tao and Li, Xiaowei and Zentgraf, Thomas and Wang, Yongtian}}, issn = {{2195-1071}}, journal = {{Advanced Optical Materials}}, number = {{21}}, pages = {{1900782}}, title = {{{Four‐Wave Mixing Holographic Multiplexing Based on Nonlinear Metasurfaces}}}, doi = {{10.1002/adom.201900782}}, volume = {{7}}, year = {{2019}}, } @inbook{64890, author = {{Paradies, Jan and Tussing, Sebastian}}, booktitle = {{Homogeneous Hydrogenation with Non‐Precious Catalysts}}, isbn = {{9783527344390}}, publisher = {{Wiley}}, title = {{{Frustrated Lewis Pair‐Catalyzed Reductions Using Molecular Hydrogen}}}, doi = {{10.1002/9783527814237.ch7}}, year = {{2019}}, } @article{24953, author = {{Bauer, Anna and Sacher, Marc}}, journal = {{Phydid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung}}, title = {{{Kompetenzorientierte, universitäre Laborpraktika - Das Paderborner Physik Praktikum (3P)}}}, year = {{2018}}, }