@inproceedings{41884, author = {{Jöns, Klaus D. and Zeuner, K.D and Schweickert, L and Hedlund, C.R and Lobato, C.N and Lettner, T and Wang, K and Gyger, S and Schöll, E and Steinhauer, S and Hammar, M and Zwiller, V}}, pages = {{2337–2344 }}, title = {{{On-Demand Generation of Entangled Photon Pairs in the Telecom C-Band with InAs Quantum Dots}}}, volume = {{88}}, year = {{2021}}, } @inproceedings{43746, abstract = {{Population/mixing-time-dependent two-dimensional coherent spectra are presented for exciton-polaritons in a microcavity. Theory based on dynamically-controlled truncation reveals coherent and incoherent contributions to the decay dynamics.}}, author = {{Meier, Torsten and Paul, Jagannath and Rose, Hendrik and Wahlstrand, Jared K and Bristow, Alan D}}, booktitle = {{Frontiers in Optics}}, isbn = {{978-1-55752-308-2}}, location = {{Washington, DC United States}}, publisher = {{Frontiers in Optics}}, title = {{{Coherent and incoherent contribution of population dynamics of semiconductor exciton-polaritons}}}, doi = {{10.1364/FIO.2021.FW5C.6}}, year = {{2021}}, } @article{23478, author = {{Rose, Hendrik and Popolitova, D. V. and Tikhonova, O. V. and Meier, Torsten and Sharapova, Polina}}, issn = {{2469-9926}}, journal = {{Physical Review A}}, title = {{{Dark-state and loss-induced phenomena in the quantum-optical regime of Λ-type three-level systems}}}, doi = {{10.1103/physreva.103.013702}}, volume = {{103}}, year = {{2021}}, } @article{34024, abstract = {{Abstract Objective External focus (EF) of attention leads to improved balance performance. Consideration of the neuromodulatory effects of EF may inform its clinical utility in addressing neuroplastic impairments after musculoskeletal injuries. We aimed to determine whether electrocortical activity and balance performance changed with attentional foci that prioritized differing sensory feedback and whether changes in electrocortical activity and balance were associated. Methods Individuals who were healthy (n = 15) performed a single-limb balance task under 3 conditions: internal focus (IF), somatosensory focus [EF with a baton (EF-baton)], and visual focus [EF with a laser (EF-laser)]. Electrocortical activity and postural sway were recorded concurrently using electroencephalography and a triaxial force plate. Electroencephalographic signals were decomposed, localized, and clustered to generate power spectral density in θ and α-2 frequency bands. Postural sway signals were analyzed with center-of-pressure sway metrics (eg, area, distance, velocity) and knee angle. The relationship between percent change in clustered brain activity and task performance metrics was assessed. Results Both EF conditions resulted in increased cortical activity and improved balance performance compared to IF. EF-laser had the largest effect, demonstrating increased frontal θ power (d = 0.64), decreased central θ power (d = −0.30), and decreased bilateral motor, bilateral parietal, and occipital α-2 power (d = −1.38 to −4.27) as well as a shorter path distance (d = −0.94) and a deeper (d = 0.70) and less variable (d = −1.15) knee angle than IF. Weak to moderate associations exist between increases in cortical activity and improved balance performance (ρ = 0.405–0.584). Conclusions EF resulted in increased cortical activity associated with cognitive, motor, somatosensory, and visual processing. EF-laser, which prioritized visual feedback, had the largest and broadest effects. Changes in cortical activity resulting from EF were independently associated with improved balance performance. Impact This study demonstrates that goal-oriented attention results in functional increases in brain activity compared to internally directed self-focus. These results suggest EF may target neurophysiologic impairments and improve balance in clinical populations. }}, author = {{Sherman, David A and Lehmann, Tim and Baumeister, Jochen and Gokeler, Alli and Donovan, Luke and Norte, Grant E}}, issn = {{0031-9023}}, journal = {{Physical Therapy}}, keywords = {{Physical Therapy, Sports Therapy and Rehabilitation}}, publisher = {{Oxford University Press (OUP)}}, title = {{{External Focus of Attention Influences Cortical Activity Associated with Single Limb Balance Performance}}}, doi = {{10.1093/ptj/pzab223}}, year = {{2021}}, } @inbook{43143, author = {{Gerhardts, Lara and Dehmel, Lukas and Meister, Dorothee M.}}, booktitle = {{Jahrbuch Medienpädagogik 16. Medienpädagogik in Zeiten einer tiefgreifenden Mediatisierung}}, editor = {{Wolf, Karsten D and Rummler, Klaus and Bettinger, Patrick and Aßmann, Sandra}}, pages = {{129--159}}, title = {{{Die berufliche Tabletaneignung von Lehrkräften als Beispiel der Mediatisierung pädagogischer Handlungskontexte. Theoretische Perspektiven und empirische Befunde}}}, doi = {{https://doi.org/10.21240/mpaed/jb16/2021.01.15.X}}, year = {{2021}}, } @inproceedings{23475, author = {{Rose, Hendrik and Paul, Jagannath and Wahlstrand, Jared K. and Bristow, Alan D. and Meier, Torsten}}, booktitle = {{Ultrafast Phenomena and Nanophotonics XXV}}, editor = {{Betz, Markus and Elezzabi, Abdulhakem Y.}}, title = {{{Theoretical analysis and simulations of two-dimensional Fourier transform spectroscopy performed on exciton-polaritons of a quantum-well microcavity system}}}, doi = {{10.1117/12.2576696}}, volume = {{11684}}, year = {{2021}}, } @inbook{22766, author = {{Dahms, Frederik and Homberg, Werner}}, booktitle = {{Forming the Future}}, issn = {{2367-1181}}, location = {{Ohio, USA, VIRTUAL EVENT}}, pages = {{2249--2259}}, publisher = {{Springer, Cham}}, title = {{{Investigations and Improvements in 3D-DIC Optical Residual Stress Analysis—A New Temperature Compensation Method}}}, doi = {{10.1007/978-3-030-75381-8_189}}, year = {{2021}}, } @article{24541, abstract = {{The mechanical properties of joined structures are determined considerably by the chosen joining technology. With the aim of providing a method that enables a faster and more profound decision-making in the spatial distribution of joining points during product development, a new method for the load path analysis of joining points is presented. For an exemplary car body, the load type in the joining elements, i.e. pure tensile, shear and combined tensile-shear loads, is determined using finite element analysis (FEA). Based on the evaluated loads, the resulting load paths in selected joining points are analyzed using a 2D FE-model of a clinching point. State of the art methods for load path analysis are dependent on the selected coordinate system or the existing stress state. Thus, a general statement about the load transmission path is not possible at this time. Here, a novel method for the analysis of load paths is used, which is independent of the alignment of the analyzed geometry. The basic assumption of the new load path analysis method was confirmed by using a simple specimen with a square hole in different orientations. The results presented here show a possibility to display the load transmission path invariantly. In further steps, the method will be extended for 3D analysis and the investigation of more complex assemblies. The primary goal of this methodical approach is an even load distribution over the joining elements and the component. This will provide a basis for future design approaches aimed at reducing the number of joining elements in joined structures.}}, author = {{Steinfelder, Christian and Martin, Sven and Brosius, Alexander and Tröster, Thomas}}, issn = {{1662-9795}}, journal = {{Key Engineering Materials}}, pages = {{73--80}}, title = {{{Load Path Transmission in Joining Elements}}}, doi = {{10.4028/www.scientific.net/kem.883.73}}, year = {{2021}}, } @inproceedings{24281, abstract = {{In order to optimize production processes and to avoid errors, it is not only necessary to automate processes, but also to integrate workers with their individual personality and skill profiles. For this purpose, human factors should be considered in the entire design process. The integrated view of mental human models, the cognitive demand of the working environment and the automation design is essential. Human-System Integration (HSI) constitutes a promising approach. Current model-based approaches offer possibilities to analyze and optimize tasks within an overall system, but they still lack integration. This leads to the research question: How can human factors be integrated into a system model of a socio-technical, Cyber-Physical Production System? The paper at hand contributes an approach of human factor integration into the procedure of Model-Based Systems Engineering for Cyber-Physical Production Systems (CPPS). The approach combines a system model of a CPPS with HSI concepts. In accordance to the benefits of MBSE, SysML is selected to integrate human factors in the development process of a CPPS. The approach is divided into five steps, which includes the extension of the SysML meta model. This allows the optimization of skill-based human-machine interaction. Defined HSI-Profiles enable system developers to integrate employee requirements at early stages within the development process. The approach is demonstrated by the maintenance of a 3D-Printer as a case example. This research enables system developers to depict individual workers with the help of the developed concepts and systematically integrate them into the development process of a CPPS.}}, author = {{Gräßler, Iris and Wiechel, Dominik and Roesmann, Daniel}}, booktitle = {{Procedia CIRP}}, issn = {{2212-8271}}, pages = {{518--523}}, title = {{{Integrating human factors in the model based development of cyber-physical production systems}}}, doi = {{10.1016/j.procir.2021.05.113}}, year = {{2021}}, } @article{45005, author = {{Roy, S. and Brehm, Martin and Sharma, S. and Wu, F. and Maltsev, D. and Halstenberg, P. and Gallington, L. and Mahurin, S. and Dai, S. and Ivanov, A. and Margulis, C. and Bryantsev, V.}}, journal = {{J. Phys. Chem. B}}, pages = {{5971--5982}}, title = {{{Unraveling Local Structure of Molten Salts via X-Ray Scattering, Raman Spectroscopy, and ab initio Molecular Dynamics}}}, doi = {{10.1021/acs.jpcb.1c03786}}, volume = {{125 (22)}}, year = {{2021}}, } @article{45003, author = {{Codescu, M.-A. and Weiß, M. and Brehm, Martin and Kornilov, O. and Sebastiani, D. and Nibbering, E. T. J.}}, journal = {{J. Phys. Chem. A}}, pages = {{1845--1859}}, title = {{{Switching Between Proton Vacancy and Excess Proton Transfer Pathways in the Reaction Between 7-Hydroxyquinoline and Formate}}}, doi = {{10.1021/acs.jpca.0c10191}}, volume = {{125 (9)}}, year = {{2021}}, } @article{45000, author = {{Mukherjee, M. and Tripathi, D. and Brehm, Martin and Riplinger, C. and Dutta, A. K.}}, journal = {{J. Chem. Theory Comput.}}, pages = {{105--116}}, title = {{{Efficient EOM-CC-Based Protocol for the Calculation of Electron Affinity of Solvated Nucleobases: Uracil as a Case Study}}}, doi = {{10.1021/acs.jctc.0c00655}}, volume = {{17 (1)}}, year = {{2021}}, } @article{24009, abstract = {{Heat-assisted forming processes are becoming increasingly important in the manufacturing of sheet metal parts for body-in-white applications. However, the non-isothermal nature of these processes leads to challenges in evaluating the forming limits, since established methods such as Forming Limit Curves (FLCs) only allow the assessment of critical forming strains for steady temperatures. For this reason, a temperature-dependent extension of the well-established GISSMO (Generalized Incremental Stress State Dependent Damage Model) fracture indicator framework is developed by the authors to predict forming failures under non-isothermal conditions. In this paper, a general approach to combine several isothermal FLCs within the temperature-extended GISSMO model into a temperature-dependent forming limit surface is investigated. The general capabilities of the model are tested in a coupled thermo-mechanical FEA using the example of warm forming of an AA5182-O sheet metal cross-die cup. The obtained results are then compared with state of the art of evaluation methods. By taking the strain and temperature path into account, GISSMO predicts greater drawing depths by up to 20% than established methods. In this way the forming and so the lightweight potential of sheet metal parts can by fully exploited. Moreover, the risk and locus of failure can be evaluated directly on the part geometry by a contour plot. An additional advantage of the GISSMO model is the applicability for low triaxialities as well as the possibility to predict the materials behavior beyond necking up to ductile fracture.}}, author = {{Camberg, Alan Adam and Erhart, Tobias and Tröster, Thomas}}, issn = {{1996-1944}}, journal = {{Materials}}, title = {{{A Generalized Stress State and Temperature Dependent Damage Indicator Framework for Ductile Failure Prediction in Heat-Assisted Forming Operations}}}, doi = {{10.3390/ma14175106}}, year = {{2021}}, } @article{24565, abstract = {{AbstractLaser surface treatment of metals is one option to improve their properties for adhesive bonding. In this paper, a pulsed YVO4 Laser source with a wavelength of 1064 nm and a maximum power of 25 W was utilized to increase the surface area of the steel HCT490X in order to improve its bonding properties with a carbon fibre reinforced polymer (CFRP). Investigated was the influence of the scanning speed of the laser source on the bonding properties. For this purpose, the steel surfaces were ablated at a scanning speed between 1500 and 4500 mm/s. Afterwards the components were bonded with the adhesive HexBond™ 677. After lap shear tests were carried out on the specimen, the surfaces were inspected using scanning electron microscopy (SEM). The experiments revealed that the bonding quality can be improved with a high scanning speed, even when the surface is not completely ablated.}}, author = {{Voswinkel, Dietrich and Kloidt, D. and Grydin, Olexandr and Schaper, Mirko}}, issn = {{0944-6524}}, journal = {{Production Engineering}}, number = {{2}}, pages = {{263--270}}, title = {{{Time efficient laser modification of steel surfaces for advanced bonding in hybrid materials}}}, doi = {{10.1007/s11740-020-01006-2}}, volume = {{15}}, year = {{2021}}, } @article{46135, author = {{Schall, Johannes and Deconinck, Marielle and Bart, Nikolai and Florian, Matthias and Helversen, Martin and Dangel, Christian and Schmidt, Ronny and Bremer, Lucas and Bopp, Frederik and Hüllen, Isabell and Gies, Christopher and Reuter, Dirk and Wieck, Andreas D. and Rodt, Sven and Finley, Jonathan J. and Jahnke, Frank and Ludwig, Arne and Reitzenstein, Stephan}}, issn = {{2511-9044}}, journal = {{Advanced Quantum Technologies}}, keywords = {{Electrical and Electronic Engineering, Computational Theory and Mathematics, Condensed Matter Physics, Mathematical Physics, Nuclear and High Energy Physics, Electronic, Optical and Magnetic Materials, Statistical and Nonlinear Physics}}, number = {{6}}, publisher = {{Wiley}}, title = {{{Bright Electrically Controllable Quantum‐Dot‐Molecule Devices Fabricated by In Situ Electron‐Beam Lithography}}}, doi = {{10.1002/qute.202100002}}, volume = {{4}}, year = {{2021}}, } @inbook{46150, abstract = {{Die Verknüpfung kontrastiver Linguistik und Didaktik ist in der linguistischen Forschung von besonderer Bedeutung und steht im Mittelpunkt dieses Bandes. Mit dem Band werden einige der Themen aus der internationalen Tagung Kontrastive Linguistik vertieft, die 2018 an der Universität Mailand stattfand. Die zwölf Beiträge fokussieren sowohl theoretisch als auch praxisorientiert wichtige Merkmale des Deutschen, das mit anderen Sprachen (wie Italienisch, Englisch und Spanisch) durch vielfältige Methoden (u.a. Korpuslinguistik und Textlinguistik) verglichen wird. Dabei präsentieren sie neue Perspektiven für den didaktischen Bereich und tragen somit zur Diskussion der Potenziale der kontrastiven Analysen in den Bereichen der Mehrsprachigkeit, der Syntax und der Phonetik/Phonologie bei. }}, author = {{Weber, Tassja}}, booktitle = {{Deutsch im Vergleich. Theorie, Praxis, Didaktik.}}, editor = {{Brambilla, Marina and Crestani, Valentina and Calpestrati, Nicolò}}, isbn = {{9783631835678}}, pages = {{151--168}}, publisher = {{Peter Lang D}}, title = {{{Zum Einfluss der Erstsprache auf den Gebrauch von Präpositionen. Eine kontrastive Analyse im Lernerkorpus MERLIN.}}}, doi = {{10.3726/b17598}}, volume = {{32}}, year = {{2021}}, } @article{46122, author = {{Kaczmarek, Olaf and Mazur, Lukas and Sharma, Sayantan}}, issn = {{2470-0010}}, journal = {{Physical Review D}}, number = {{9}}, publisher = {{American Physical Society (APS)}}, title = {{{Eigenvalue spectra of QCD and the fate of UA(1) breaking towards the chiral limit}}}, doi = {{10.1103/physrevd.104.094518}}, volume = {{104}}, year = {{2021}}, } @article{46124, author = {{Altenkort, Luis and Eller, Alexander M. and Kaczmarek, O. and Mazur, Lukas and Moore, Guy D. and Shu, H.-T.}}, issn = {{2470-0010}}, journal = {{Physical Review D}}, number = {{1}}, publisher = {{American Physical Society (APS)}}, title = {{{Heavy quark momentum diffusion from the lattice using gradient flow}}}, doi = {{10.1103/physrevd.103.014511}}, volume = {{103}}, year = {{2021}}, } @article{46123, author = {{Altenkort, Luis and Eller, Alexander M. and Kaczmarek, O. and Mazur, Lukas and Moore, Guy D. and Shu, H.-T.}}, issn = {{2470-0010}}, journal = {{Physical Review D}}, number = {{11}}, publisher = {{American Physical Society (APS)}}, title = {{{Sphaleron rate from Euclidean lattice correlators: An exploration}}}, doi = {{10.1103/physrevd.103.114513}}, volume = {{103}}, year = {{2021}}, } @article{46294, author = {{Tondeur, J and Petko, D and Christensen, R and Starkey, L and Drossel, Kerstin and Eichhorn, K and Schmidt-Crawford, D and Knezek, D}}, journal = {{Educational Technology Research and Development}}, pages = {{2187--2208}}, title = {{{Quality Criteria for Conceptual Technology Integration Models in Education: Bridging Research and Practice. Educational Technology Research and Development}}}, doi = {{. doi.org/10.1007/s11423-020-09911-0}}, year = {{2021}}, }