@article{43130, author = {{Schmolke, Tobias and Teutenberg, Dominik and Meschut, Gerson}}, journal = {{The Journal of Adhesion}}, publisher = {{Taylor & Francis}}, title = {{{Investigation of the leak tightness of structural adhesive joints for use in battery housings considering mechanical and corrosive loads}}}, doi = {{10.1080/00218464.2023.2195556}}, year = {{2023}}, } @article{42878, author = {{Köring, Laura and Stepen, Arne and Birenheide, Bernhard and Barth, Simon and Leskov, Maxim and Schoch, Roland and Krämer, Felix and Breher, Frank and Paradies, Jan}}, issn = {{1433-7851}}, journal = {{Angewandte Chemie International Edition}}, keywords = {{General Chemistry, Catalysis}}, publisher = {{Wiley}}, title = {{{Boron‐Centered Lewis Superacid through Redox‐Active Ligands: Application in C−F and S−F Bond Activation}}}, doi = {{10.1002/anie.202301632}}, year = {{2023}}, } @article{42879, author = {{Köring, Laura and Stepen, Arne and Birenheide, Bernhard and Barth, Simon and Leskov, Maxim and Schoch, Roland and Krämer, Felix and Breher, Frank and Paradies, Jan}}, issn = {{0044-8249}}, journal = {{Angewandte Chemie}}, keywords = {{General Medicine}}, publisher = {{Wiley}}, title = {{{Boron‐Centered Lewis Superacid through Redox‐Active Ligands: Application in C−F and S−F Bond Activation}}}, doi = {{10.1002/ange.202301632}}, year = {{2023}}, } @inproceedings{42877, author = {{Göddecke, Johannes and Meschut, Gerson}}, location = {{Orlando}}, title = {{{Damping Properties of Bonded Structures Under Dynamic Loading}}}, year = {{2023}}, } @article{42953, author = {{Cara, Eleonora and Hönicke, Philipp and Kayser, Yves and Lindner, Jörg K. N. and Castellino, Micaela and Murataj, Irdi and Porro, Samuele and Angelini, Angelo and De Leo, Natascia and Pirri, Candido Fabrizio and Beckhoff, Burkhard and Boarino, Luca and Ferrarese Lupi, Federico}}, issn = {{2637-6105}}, journal = {{ACS Applied Polymer Materials}}, keywords = {{Organic Chemistry, Polymers and Plastics, Process Chemistry and Technology}}, number = {{3}}, pages = {{2079--2087}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Developing Quantitative Nondestructive Characterization of Nanomaterials: A Case Study on Sequential Infiltration Synthesis of Block Copolymers}}}, doi = {{10.1021/acsapm.2c02094}}, volume = {{5}}, year = {{2023}}, } @article{36983, abstract = {{AbstractThe use of structured measuring systems to prevent wall slip is a common approach to obtain absolute rheological values. Typically, only the minimum distance between the measuring surfaces is used for further calculation, implying that no flow occurs between the structural elements. But this assumption is misleading, and a gap correction is necessary. To determine the radius correction $$\Delta r$$ Δ r for specific geometries, we conducted investigations on three Newtonian fluids (two silicon oils and one suspension considered to be Newtonian in the relevant shear rate range). The results show that $$\Delta r$$ Δ r is not only shear- and material-independent, but geometry-dependent, providing a Newtonian flow behaviour in a similar viscosity range. Therefore, a correction value can be determined with only minute deviations in different Newtonian fluids. As the conducted laboratory measurements are very time-consuming and expensive, a CFD-approach with only very small deviations was additionally developed and compared for validation purposes. Therefore, simulation is an effective and resource-efficient alternative to the presented laboratory measurements to determine $$\Delta r$$ Δ r for the correction of structured coaxial geometries even for non-Newtonian fluids in the future.}}, author = {{Josch, Sebastian and Jesinghausen, Steffen and Dechert, Christopher and Schmid, Hans-Joachim}}, issn = {{0035-4511}}, journal = {{Rheologica Acta}}, keywords = {{rheology, rheometry, suspension, coaxial, correction}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Experimental and simulative determination and correction of the effective gap extension in structured coaxial measuring systems}}}, doi = {{10.1007/s00397-023-01383-2}}, year = {{2023}}, } @book{42938, author = {{Allmer, Thomas}}, publisher = {{Routledge}}, title = {{{Universities and Academic Labour in Times of Precarisation and Digitalisation}}}, year = {{2023}}, } @inproceedings{30125, abstract = {{We present an approach for guaranteed constraint satisfaction by means of data-based optimal control, where the model is unknown and has to be obtained from measurement data. To this end, we utilize the Koopman framework and an eDMD-based bilinear surrogate modeling approach for control systems to show an error bound on predicted observables, i.e., functions of the state. This result is then applied to the constraints of the optimal control problem to show that satisfaction of tightened constraints in the purely data-based surrogate model implies constraint satisfaction for the original system.}}, author = {{Schaller, Manuel and Worthmann, Karl and Philipp, Friedrich and Peitz, Sebastian and Nüske, Feliks}}, booktitle = {{IFAC-PapersOnLine}}, number = {{1}}, pages = {{169--174}}, title = {{{Towards reliable data-based optimal and predictive control using extended DMD}}}, doi = {{10.1016/j.ifacol.2023.02.029}}, volume = {{56}}, year = {{2023}}, } @article{37543, author = {{Hetkämper, Tim and Koch, Kevin and Claes, Leander and Henning, Bernd}}, journal = {{tm - Technisches Messen}}, keywords = {{Schlierentechnik}}, number = {{2}}, pages = {{103--112}}, publisher = {{Walter de Gruyter GmbH}}, title = {{{Phase-preserving methods to visualise ultrasonic fields with schlieren imaging}}}, doi = {{10.1515/teme-2022-0112}}, volume = {{90}}, year = {{2023}}, } @article{42635, author = {{Greil, Stefan and Overesch, Michael and Rohlfing-Bastian, Anna and Schreiber, Ulrich and Sureth-Sloane, Caren}}, journal = {{Intertax}}, number = {{4}}, pages = {{272--289}}, title = {{{Towards an Amended Arm´s Length Principle - Tackling Complexity and Implementing Destination Rules in Transfer Pricing}}}, volume = {{51}}, year = {{2023}}, } @inproceedings{43051, abstract = {{We demonstrate the numerical and experimental realization of optimized optical traveling-wave antennas made of low-loss dielectric materials. These antennas exhibit highly directive radiation patterns and our studies reveal that this nature comes from two dominant guided TE modes excited in the waveguide-like director of the antenna, in addition to the leaky modes. The optimized antennas possess a broadband nature and have a nearunity radiation efficiency at an operational wavelength of 780 nm. Compared to the previously studied plasmonic antennas for photon emission, our all-dielectric approach demonstrates a new class of highly directional, low-loss, and broadband optical antennas.}}, author = {{Farheen, Henna and Yan, Lok-Yee and Leuteritz, Till and Qiao, Siqi and Spreyer, Florian and Schlickriede, Christian and Quiring, Viktor and Eigner, Christof and Silberhorn, Christine and Zentgraf, Thomas and Linden, Stefan and Myroshnychenko, Viktor and Förstner, Jens}}, booktitle = {{Integrated Optics: Devices, Materials, and Technologies XXVII}}, editor = {{García-Blanco, Sonia M. and Cheben, Pavel}}, keywords = {{tet_topic_opticalantenna}}, pages = {{124241E}}, publisher = {{SPIE}}, title = {{{Tailoring the directive nature of optical waveguide antennas}}}, doi = {{10.1117/12.2658921}}, year = {{2023}}, } @inproceedings{43052, abstract = {{We demonstrate a large-scale two dimensional silicon-based optical phased array (OPA) composed of nanoantennas with circular gratings that are balanced in power and aligned in phase, required for producing desired radiation patterns in the far-field. The OPAs are numerically optimized to have an upward efficiency of up to 90%, targeting radiation concentration mainly in the field of view. We envision that our OPAs have the ability of generating complex holographic images, rendering them an attractive candidate for a wide range of applications like LiDAR sensors, optical trapping, optogenetic stimulation and augmented-reality displays.}}, author = {{Farheen, Henna and Strauch, Andreas and Scheytt, J. Christoph and Myroshnychenko, Viktor and Förstner, Jens}}, booktitle = {{Integrated Optics: Devices, Materials, and Technologies XXVII}}, editor = {{García-Blanco, Sonia M. and Cheben, Pavel}}, keywords = {{tet_topic_opticalantenna}}, pages = {{124241D }}, publisher = {{SPIE}}, title = {{{Optimized silicon antennas for optical phased arrays}}}, doi = {{10.1117/12.2658716}}, year = {{2023}}, } @article{43094, abstract = {{}}, author = {{Heck, Tamara and Steinhardt, Isabel and Rahal, Rima-Maria and Schubotz, Moritz and Scholl, Dominik and Behrens, Sarah}}, issn = {{2367-7163}}, journal = {{Research Ideas and Outcomes}}, keywords = {{Open Science}}, publisher = {{Pensoft Publishers}}, title = {{{Bootstrapping the Open Science culture: The fellowship approach}}}, doi = {{10.3897/rio.9.e103675}}, volume = {{9}}, year = {{2023}}, } @article{43105, author = {{Black, Tobias and Fuest, Mario and Lankeit, Johannes and Mizukami, Masaaki}}, issn = {{1468-1218}}, journal = {{Nonlinear Analysis: Real World Applications}}, keywords = {{Applied Mathematics, Computational Mathematics, General Economics, Econometrics and Finance, General Engineering, General Medicine, Analysis}}, publisher = {{Elsevier BV}}, title = {{{Possible points of blow-up in chemotaxis systems with spatially heterogeneous logistic source}}}, doi = {{10.1016/j.nonrwa.2023.103868}}, volume = {{73}}, year = {{2023}}, } @article{43154, author = {{Wippermann, Jan and Meschut, Gerson and Koshukow, Wikentij and Liebsch, Alexander and Gude, Maik and Minch, Steven and Kolbe, Björn}}, issn = {{0043-2288}}, journal = {{Welding in the World}}, keywords = {{Metals and Alloys, Mechanical Engineering, Mechanics of Materials}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Correction: Thermal influence of resistance spot welding on a nearby overmolded thermoplastic–metal joint}}}, doi = {{10.1007/s40194-023-01499-2}}, year = {{2023}}, } @inproceedings{43177, author = {{Görel, Gamze and Hellmich, Frank and Löper, Marwin Felix}}, publisher = {{Universität Paderborn}}, title = {{{Förderung der sozialen Partizipation von Kindern im inklusiven Unterricht. Workshop auf dem 9. Paderborner Grundschultag. Thema: „Demokratie von Anfang an! Demokratie in der Grundschule erfahren, mitgestalten und reflektieren“}}}, year = {{2023}}, } @inbook{43227, author = {{Vitt, Vivian and Häsel-Weide, Uta}}, booktitle = {{Mathematica Didactica, 46}}, title = {{{Reziprokes Peer-Tutoring zur Förderung von Schüler*innen mit Schwierigkeiten beim Mathematiklernen.}}}, doi = {{https://doi.org/10.18716/ojs/md/2023.1671}}, year = {{2023}}, } @inbook{43226, author = {{Häsel-Weide, Uta and Nührenbörger, M.}}, booktitle = {{Mathematica Didactica, 46}}, title = {{{Inklusive Praktiken unterrichtsintegrierter Förderung im Mathematikunterricht.}}}, doi = {{https://doi.org/10.18716/ojs/md/2023.1670}}, year = {{2023}}, } @inproceedings{43236, author = {{Rüther, Torben and Schmid, Hans-Joachim}}, keywords = {{CDMA}}, location = {{Paderborn}}, title = {{{CDMA: Centrifugal Differential Mobility Analyzer - Ein Messprinzip zur Bestimmung von Multidimensionalen Partikeleigenschaften (Vortrag)}}}, year = {{2023}}, } @article{43248, author = {{Schroeter-Wittke, Harald}}, issn = {{1437-7160}}, journal = {{Zeitschrift für Pädagogik und Theologie}}, number = {{1}}, pages = {{120--124}}, publisher = {{De Gruyter}}, title = {{{Thorsten Knauth/Rainer Möller/Annebelle Pithan (Hg.), Inklusive Religionspädagogik der Vielfalt. Konzeptionelle Grundlagen und didaktische Konkretionen. Münster/New York 2020}}}, doi = {{10.1515/zpt-2023-0013}}, volume = {{75}}, year = {{2023}}, } @inproceedings{43280, author = {{Lutters, Nicole and Buckmann, Felix and Kenig, Eugeny Y.}}, location = {{Frankfurt am Main}}, publisher = {{Jahrestreffen der DECHEMA-Fachgruppen Computational Fluid Dynamics und Wärme- und Stoffübertragung}}, title = {{{Zur experimentellen Untersuchung der Reinstoffkondensation in Kissenplatten-Wärmeübertragern}}}, year = {{2023}}, } @article{43371, abstract = {{Laser structuring to improve the adhesion properties of steel substrates in fiber-metal laminates offers many advantages that are highly suitable for modern industrial requirements. Maintenance and energy costs are relatively low, it is easy to automate, and there are no by-products such as chemicals or abrasives to dispose of or recycle. This makes laser structuring a particularly environmentally friendly process, which is nowadays more important than ever. On the other hand, the process time for laser structuring is much higher than for chemical pre-treatment, for example. In past studies, the time and cost efficiency of the laser structuring process has tended to play a minor role. However, there are approaches in which laser structured surfaces are adapted to the shear stress peaks occurring within the adhesive layer, thus requiring only partial structuring of the area to be bonded, potentially saving process time. In this experimental study, electrolytically galvanized steel substrates were partially laser structured to match the shear stress distribution and then bonded to a carbon fiber-reinforced plastic. The adhesion properties achieved were characterized using shear tensile tests and compared with the properties of the fully structured ones. With the partial laser structuring, a saving of 66 % of the conventional process time was achieved while maintaining 95 % of the same shear strength.}}, author = {{Voswinkel, Dietrich}}, journal = {{Journal of Manufacturing Processes}}, keywords = {{Laser treatment Adhesive bonding Surface technology Hybrid materials}}, pages = {{10--19}}, publisher = {{Elsevier}}, title = {{{Application of a new strategy for time-efficient laser treatment of galvanized steel substrates to improve the adhesion properties}}}, doi = {{/10.1016/j.jmapro.2023.03.056}}, volume = {{94}}, year = {{2023}}, } @proceedings{35062, editor = {{Meine, Sabine and Otto, Arnold and Süßmann, Johannes}}, isbn = {{978-3-8260-7218-5}}, publisher = {{Königshausen & Neumann}}, title = {{{Musiklandschaften zwischen Rhein und Weser. Pluralisierung und Verflechtung entlang des Hellwegs in der Frühen Neuzeit. Unter Mitarbeit v. Markus Lauert}}}, doi = {{https://doi.org/10.36202/9783826077920}}, volume = {{13}}, year = {{2023}}, } @inproceedings{43393, author = {{Bernemann, Sören Antonius and Maćkowiak, Jan and Maćkowiak, Jerzy and Kenig, Eugeny}}, location = {{Paderborn}}, title = {{{Computerunterstützte Strömungsuntersuchung von landwirtschaftlichen Abfällen}}}, year = {{2023}}, } @inproceedings{43395, author = {{Trentinaglia, Roman and Merschjohann, Sven and Fockel, Markus and Eikerling, Hendrik}}, booktitle = {{REFSQ 2023: Requirements Engineering: Foundation for Software Quality}}, isbn = {{9783031297854}}, issn = {{0302-9743}}, publisher = {{Springer Nature Switzerland}}, title = {{{Eliciting Security Requirements – An Experience Report}}}, doi = {{10.1007/978-3-031-29786-1_25}}, year = {{2023}}, } @article{34832, author = {{Hanusch, Maximilian}}, journal = {{Annals of Global Analysis and Geometry}}, keywords = {{Lax equation, generalized Baker-Campbell-Dynkin-Hausdorff formula, regularity of Lie groups}}, number = {{21}}, title = {{{The Lax Equation and Weak Regularity of Asymptotic Estimate Lie Groups}}}, doi = {{10.1007/s10455-023-09888-y}}, volume = {{63}}, year = {{2023}}, } @inbook{41959, author = {{Grydin, Olexandr and Garthe, Kai-Uwe and Yuan, Xueyang and Broer, Jette and Keßler, Olaf and Králík, Rostislav and Cieslar, Miroslav and Schaper, Mirko}}, booktitle = {{Light Metals 2023}}, editor = {{Broek, Stephan}}, isbn = {{9783031225314}}, issn = {{2367-1181}}, pages = {{1031--1037}}, publisher = {{Springer Nature Switzerland}}, title = {{{Numerical and Experimental Investigation of Twin-Roll Casting of Aluminum–Lithium Strips}}}, doi = {{10.1007/978-3-031-22532-1_137}}, year = {{2023}}, } @misc{35204, author = {{Ghazal, Abdulkarim and Sadeghi-Kohan, Somayeh and Reimer, Jan Dennis and Hellebrand, Sybille}}, keywords = {{WORKSHOP}}, pages = {{2}}, publisher = {{35. Workshop "Testmethoden und Zuverlässigkeit von Schaltungen und Systemen" (TuZ'23), Feb. 2023}}, title = {{{On Cryptography Effects on Interconnect Reliability}}}, year = {{2023}}, } @article{43456, author = {{Brosch, Anian and Wallscheid, Oliver and Böcker, Joachim}}, issn = {{0885-8993}}, journal = {{IEEE Transactions on Power Electronics}}, keywords = {{Electrical and Electronic Engineering}}, pages = {{1--14}}, publisher = {{Institute of Electrical and Electronics Engineers (IEEE)}}, title = {{{Time-Optimal Model Predictive Control of Permanent Magnet Synchronous Motors Considering Current and Torque Constraints}}}, doi = {{10.1109/tpel.2023.3265705}}, year = {{2023}}, } @inbook{43459, author = {{Strauß, Sara}}, booktitle = {{Narrative and Mental Health}}, editor = {{Mildorf, Jarmila and Punzi, Eilsabeth and Singer, Christoph}}, isbn = {{9780197620540}}, pages = {{190--206}}, publisher = {{Oxford University Press}}, title = {{{Narrative Experiments with Medical Categorization and Normalization in B. S. Johnson's House Mother Normal}}}, year = {{2023}}, } @inproceedings{43111, author = {{Dechert, Christopher and Kengni Nkouemou, Augustin and Kenig, Eugeny Y.}}, location = {{Frankfurt am Main}}, title = {{{Vergleichende Untersuchung der Wirkung verschiedener Mikrostrukturen auf die Flüssigkeitsausbreitung}}}, year = {{2023}}, } @article{43245, abstract = {{High-contrast slab waveguide Bragg gratings with 1D periodicity are investigated. For specific oblique excitation by semi-guided waves at sufficiently high angles of incidence, the idealized structures do not exhibit any radiative losses, such that reflectance and transmittance for the single port mode add strictly up to one. We consider a series of symmetric, fully and partly etched finite gratings, for parameters found in integrated silicon photonics. These can act as spectral filters with a reasonably flattop response. Apodization can lead to more box shaped reflectance and transmittance spectra. Together with a narrowband Fabry–Perot filter, these configurations are characterized by reflection bands, or transmittance peaks, with widths that span three orders of magnitude.}}, author = {{Hammer, Manfred and Farheen, Henna and Förstner, Jens}}, issn = {{0740-3224}}, journal = {{Journal of the Optical Society of America B}}, keywords = {{tet_topic_waveguide}}, number = {{4}}, pages = {{862}}, publisher = {{Optica Publishing Group}}, title = {{{How to suppress radiative losses in high-contrast integrated Bragg gratings}}}, doi = {{10.1364/josab.485725}}, volume = {{40}}, year = {{2023}}, } @article{44081, author = {{Serino, Laura and Gil López, Jano and Stefszky, Michael and Ricken, Raimund and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine}}, issn = {{2691-3399}}, journal = {{PRX Quantum}}, keywords = {{General Physics and Astronomy, Mathematical Physics, Applied Mathematics, Electronic, Optical and Magnetic Materials, Electrical and Electronic Engineering, General Computer Science}}, number = {{2}}, publisher = {{American Physical Society (APS)}}, title = {{{Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States}}}, doi = {{10.1103/prxquantum.4.020306}}, volume = {{4}}, year = {{2023}}, } @book{44080, author = {{Ribbat, Christoph}}, title = {{{Breathing in Manhattan: Carola Speads - The German Jewish Gymnastics Instructor Who Brought Mindfulness to America}}}, year = {{2023}}, } @inproceedings{43189, abstract = {{The nonlinear optical response of quantum well excitons is investigated experimentally using polarization resolved four wave mixing, optical-pump optical-probe, and optical-pump Terahertz-probe spectroscopy. The four-wave mixing data reveal clear signatures of coherent biexcitons which concur with straight-forward polarization selection rules at the Γ point. The type-I samples show the well-established time-domain beating signatures in the transients as well as the corresponding spectral signatures clearly. The latter are also present in type-II samples; however, the smaller exciton and biexciton binding energies in these structures infer longer beating times which, in turn, are accompanied by faster dephasing of the type-II exciton coherences. Furthermore, the THz absorption following spectrally narrow, picosecond excitation at energies in the vicinity of the 1s exciton resonance are discussed. Here, the optical signatures yield the well-established redshifts and blueshifts for the appropriate polarization geometries in type-I quantum well samples also termed “AC Stark Effect”. The THz probe reveals intriguing spectral features which can be ascribed to coherent negative absorption following an excitation into a virtual state for an excitation below the 1s exciton resonance. Furthermore, the scattering and ionization of excitons is discussed for several excitation geometries yielding control rules for elastic and inelastic quasiparticle collisions.}}, author = {{Meier, Torsten and Stein, M. and Schäfer, F. and Anders, D. and Littmann, J. H. and Fey, M. and Trautmann, Alexander and Ngo, C. and Steiner, J. T. and Reichelt, Matthias and Fuchs, C. and Volz, K. and Chatterjee, S.}}, booktitle = {{Ultrafast Phenomena and Nanophotonics XXVII}}, publisher = {{SPIE }}, title = {{{Experimental studies of the excitonic nonlinear response of GaAs-based type-I and type-II quantum well structures interacting with optical and terahertz fields}}}, doi = {{10.1117/12.2650291}}, volume = {{12419}}, year = {{2023}}, } @inproceedings{43191, abstract = {{Anomalous currents refer to electronic currents that flow perpendicularly to the direction of the accelerating electric field. Such anomalous currents can be generated when Terahertz fields are applied after an optical interband excitation of GaAs quantum wells. The underlying processes are investigated by numerical solutions of the semiconductor Bloch equations in the length gauge. Excitonic effects are included by treating the manybody Coulomb interaction in time-dependent Hartree-Fock approximation and additionally also carrier-phonon scattering processes are considered. The band structure and matrix elements are obtained from a 14-band k · p model within the envelope function approximation. The random phase factors of the matrix elements that appear due to the separate numerical diagonalization at each k-point are treated by applying a smooth gauge transformation. We present the macroscopic Berry curvature and anomalous current transients with and without excitonic effects. It is demonstrated that the resonant optical excitation of excitonic resonances can significantly enhance the Berry curvature and the anomalous currents.}}, author = {{Meier, Torsten and Ngo, C. and Priyadarshi, S. and Duc, H. T. and Bieler, M.}}, booktitle = {{Ultrafast Phenomena and Nanophotonics XXVII}}, publisher = {{SPIE}}, title = {{{Terahertz-induced anomalous currents following the optical excitation of excitons in semiconductor quantum wells}}}, doi = {{10.1117/12.2646022}}, volume = {{12419}}, year = {{2023}}, } @inproceedings{43190, abstract = {{The nonlinear optical response of quantum well excitons excited by optical fields is analyzed by numerical solutions of the semiconductor Bloch equations. Differential absorption spectra are computed for resonant pumping at the exciton resonance and the dependence of the absorption changes on the polarization directions of the pump and probe pulses is investigated. Coherent biexcitonic many-body correlations are included in our approach up to third-order in the optical fields. Results are presented for spatially-direct type-I and spatiallyindirect type-II quantum well systems. Due to the spatial inhomogeneity, in type-II structures a finite coupling between excitons of opposite spins exists already on the Hartree-Fock level and contributes to the absorption changes for the case of opposite circularly polarized pump and probe pulses.}}, author = {{Meier, Torsten and Trautmann, Alexander and Stein, M. and Schäfer, F. and Anders, D. and Ngo, C. and Steiner, J. T. and Reichelt, Matthias and Chatterjee, S.}}, booktitle = {{Ultrafast Phenomena and Nanophotonics XXVII}}, publisher = {{SPIE}}, title = {{{Analysis of the nonlinear optical response of excitons in type-I and type-II quantum wells including many-body correlations}}}, doi = {{10.1117/12.2650169}}, volume = {{12419}}, year = {{2023}}, } @article{43139, author = {{Meier, Torsten and Schäfer, F. and Stein, M. and Lorenz, J. and Dobener, F. and Ngo, C. and Steiner, J. T. and Fuchs, C. and Stolz, W. and Volz, K. and Hader, J. and Moloney, J.V. and Koch, S.W. and Chatterjee, S.}}, journal = {{Applied Physics Letters}}, number = {{8}}, title = {{{Gain recovery dynamics in active type-II semiconductor heterostructures}}}, doi = {{10.1063/5.0128777}}, volume = {{122}}, year = {{2023}}, } @unpublished{43132, author = {{Meier, Torsten and Grisard, S. and Trifonov, A.V. and Rose, Hendrik and Reichhardt, R. and Reichelt, Matthias and Schneider, C. and Kamp, M. and Höfling, S. and Bayer, M. and Akimov, I.A}}, booktitle = {{arxiv:2302.02480}}, title = {{{Temporal sorting of optical multi-wave-mixing processes in semiconductor quantum dots}}}, year = {{2023}}, } @article{44050, author = {{Sperling, Jan and Agudelo, Elizabeth}}, issn = {{2469-9926}}, journal = {{Physical Review A}}, number = {{4}}, publisher = {{American Physical Society (APS)}}, title = {{{Entanglement of particles versus entanglement of fields: Independent quantum resources}}}, doi = {{10.1103/physreva.107.042420}}, volume = {{107}}, year = {{2023}}, } @article{40477, author = {{Sperling, Jan and Gianani, Ilaria and Barbieri, Marco and Agudelo, Elizabeth}}, issn = {{2469-9926}}, journal = {{Physical Review A}}, number = {{1}}, publisher = {{American Physical Society (APS)}}, title = {{{Detector entanglement: Quasidistributions for Bell-state measurements}}}, doi = {{10.1103/physreva.107.012426}}, volume = {{107}}, year = {{2023}}, } @article{42973, author = {{Lüders, Carolin and Pukrop, Matthias and Barkhausen, Franziska and Rozas, Elena and Schneider, Christian and Höfling, Sven and Sperling, Jan and Schumacher, Stefan and Aßmann, Marc}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, keywords = {{General Physics and Astronomy}}, number = {{11}}, publisher = {{American Physical Society (APS)}}, title = {{{Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography}}}, doi = {{10.1103/physrevlett.130.113601}}, volume = {{130}}, year = {{2023}}, } @article{44092, abstract = {{We study how competition between physicians affects the provision of medical care. In our theoretical model, physicians are faced with a heterogeneous patient population, in which patients systematically vary with regard to both their responsiveness to the provided quality of care and their state of health. We test the behavioral predictions derived from this model in a controlled laboratory experiment. In line with the model, we observe that competition significantly improves patient benefits as long as patients are able to respond to the quality provided. For those patients, who are not able to choose a physician, competition even decreases the patient benefit compared to a situation without competition. This decrease is in contrast to our theoretical prediction implying no change in benefits for passive patients. Deviations from patient-optimal treatment are highest for passive patients in need of a low quantity of medical services. With repetition, both, the positive effects of competition for active patients as well as the negative effects of competition for passive patients become more pronounced. Our results imply that competition can not only improve but also worsen patient outcome and that patients’ responsiveness to quality is decisive.}}, author = {{Brosig-Koch, Jeannette and Hehenkamp, Burkhard and Kokot, Johanna}}, journal = {{Health Economics}}, keywords = {{physician competition, patient characteristics, heterogeneity in quality responses, fee-for-service, laboratory experiment}}, title = {{{Who benefits from quality competition in health care? A theory and a laboratory experiment on the relevance of patient characteristics}}}, doi = {{10.1002/hec.4689}}, year = {{2023}}, } @techreport{44093, abstract = {{We consider a model where for-profit providers compete in quality in a price-regulated market that has been opened to competition, and where the incumbent is located at the center of the market, facing high costs of relocation. The model is relevant in markets such as public health care, education and schooling, or postal services. We find that, when the regulated price is low or intermediate, the entrant strategically locates towards the corner of the market to keep the incumbent at the low monopoly quality level. For a high price, the entrant locates at the corner of the market and both providers implement higher quality compared to a monopoly. In any case, the entrant implements higher quality than the incumbent provider. Social welfare is always higher in a duopoly if the cost of quality is low. For higher cost levels welfare is non-monotonic in the price and it can be optimal to the regulator not to use its entire budget. Therefore, the welfare effect of entry depends on the price and the size of the entry cost, and the regulator should condition the decision to allow entry on an assessment of the entry cost.}}, author = {{Hehenkamp, Burkhard and Kaarbøe, Oddvar M.}}, keywords = {{Quality competition, Price regulation, Location choice, Product differentiation}}, title = {{{Price Regulation, Quality Competition and Location Choice with Costly Relocation}}}, year = {{2023}}, } @article{44097, abstract = {{We present strong enhancement of third harmonic generation in an amorphous silicon metasurface consisting of elliptical nano resonators. We show that this enhancement originates from a new type of multi-mode Fano mechanism. These ‘Super-Fano’ resonances are investigated numerically in great detail using full-wave simulations. The theoretically predicted behavior of the metasurface is experimentally verified by linear and nonlinear transmission spectroscopy. Moreover, quantitative nonlinear measurements are performed, in which an absolute conversion efficiency as high as ηmax ≈ 2.8 × 10−7 a peak power intensity of 1.2 GW cm−2 is found. Compared to an unpatterned silicon film of the same thickness amplification factors of up to ~900 are demonstrated. Our results pave the way to exploiting a strong Fano-type multi-mode coupling in metasurfaces for high THG in potential applications.}}, author = {{Hähnel, David and Golla, Christian and Albert, Maximilian and Zentgraf, Thomas and Myroshnychenko, Viktor and Förstner, Jens and Meier, Cedrik}}, issn = {{2047-7538}}, journal = {{Light: Science & Applications}}, keywords = {{tet_topic_meta}}, number = {{1}}, pages = {{97}}, publisher = {{Springer Nature}}, title = {{{A multi-mode super-fano mechanism for enhanced third harmonic generation in silicon metasurfaces}}}, doi = {{https://doi.org/10.1038/s41377-023-01134-1}}, volume = {{12}}, year = {{2023}}, } @article{44077, author = {{Maack, Marten}}, issn = {{0167-6377}}, journal = {{Operations Research Letters}}, keywords = {{Applied Mathematics, Industrial and Manufacturing Engineering, Management Science and Operations Research, Software}}, number = {{3}}, pages = {{220--225}}, publisher = {{Elsevier BV}}, title = {{{Online load balancing on uniform machines with limited migration}}}, doi = {{10.1016/j.orl.2023.02.013}}, volume = {{51}}, year = {{2023}}, } @inproceedings{44096, author = {{Mamedov, Tural and Schleicher, Eckhard and Schubert, Markus and Ehlert, Thomas and Kenig, Eugeny Y. and Hampel, Uwe}}, location = {{Frankfurt am Main}}, title = {{{Experimental analysis of ship motion effects on the performance of an absorption column equipped with structured packings}}}, year = {{2023}}, } @inproceedings{44094, author = {{Ehlert, Thomas and Mamedov, Tural and Schubert, Markus and Kenig, Eugeny Y.}}, location = {{Frankfurt am Main}}, title = {{{Charakterisierung des Einflusses neigungsinduzierter Strömungsformen mit dem Ansatz der hydrodynamsichen Analogie}}}, year = {{2023}}, } @inproceedings{44095, author = {{Ehlert, Thomas and Lutters, Nicole and Kenig, Eugeny Y.}}, location = {{Frankfurt am Main}}, title = {{{Modellierung des Randspalts in Strukturpackungskolonnen mit dem Ansatz der hydrodynamischen Analogien}}}, year = {{2023}}, } @article{44137, author = {{Jende, Yvonne Kristin}}, issn = {{0944-7008}}, journal = {{Zeitschrift für Kanada-Studien }}, pages = {{126–127}}, publisher = {{Wissner Verlag}}, title = {{{"The Future of Canadian Studies: On Plowing a Lonely Furrow." }}}, volume = {{43}}, year = {{2023}}, } @book{44083, author = {{Bauer, Anna Brigitte}}, isbn = {{978-3-8325-5625-9}}, publisher = {{Logos Verlag Berlin GmbH}}, title = {{{Experimentelle Kompetenz Physikstudierender. Entwicklung und erste Erprobung eines performanzorientierten Kompetenzstrukturmodells unter Nutzung qualitativer Methoden}}}, doi = {{10.30819/5625}}, volume = {{352}}, year = {{2023}}, } @inproceedings{44181, author = {{Beule, Felix and Schmelzle, Lars and Teutenberg, Dominik and Possart, Gunnar and Meschut, Gerson and Mergheim, Julia}}, booktitle = {{23. Kolloquium: Gemeinsame Forschung in der Klebtechnik}}, location = {{Frankfurt}}, title = {{{Methodenentwicklung zur Simulation von hyperelastischen Klebverbindungen unter Crashbelastung}}}, year = {{2023}}, } @misc{43374, author = {{Schürmann, Patrick}}, title = {{{ A Formal Comparison of Advanced Digital Signature Primitives}}}, year = {{2023}}, } @inproceedings{44183, author = {{Kowatz, Jannik and Teutenberg, Dominik and Meschut, Gerson}}, booktitle = {{23. Kolloquium Gemeinsame Forschung in der Klebtechnik}}, location = {{Frankfurt a. M.}}, title = {{{Weiterentwicklung der induktiven Schnellhärtung von Klebverbindungen für robuste Fertigungsprozesse unter Berücksichtigung von serienrelevanten Einflussfaktoren}}}, year = {{2023}}, } @article{42515, abstract = {{ Microcellular wood fiber reinforced polymers offer the possibility to reduce the use of fossil raw materials. In particular, thick-walled structures with thicknesses greater than 6 mm offer a high potential for weight savings. This study investigates the cell structures and mechanical properties of injection-molded test specimens. The influence of different thicknesses (6–10 mm) along with different chemical blowing agents (endothermic, exothermic) with varying dosages (0–2 wt%) is analyzed. The investigations reveal that exothermic chemical blowing agents form finer cells consistently to thin-walled structures than endothermic ones. Higher foaming agent content leads to higher pore fractions, with many small cells coalescing into a large open-pore cell network. The mechanical properties depend mainly on the pore content of the sample. The specific tensile properties deteriorate with the use of chemical blowing agents (CFA), whereas the sandwich structure produced with compact edge layers has a positive influence on the specific flexural properties. }}, author = {{Moritzer, Elmar and Flachmann, Felix}}, issn = {{0021-955X}}, journal = {{Journal of Cellular Plastics}}, keywords = {{Materials Chemistry, Polymers and Plastics, General Chemistry}}, number = {{3}}, pages = {{187--199}}, publisher = {{SAGE Publications}}, title = {{{Morphological and mechanical properties of foamed thick-walled Wood-Plastic-Composite structures}}}, doi = {{10.1177/0021955x231161175}}, volume = {{59}}, year = {{2023}}, } @article{42179, author = {{Burmeister, Sascha Christian and Schryen, Guido}}, journal = {{Energy Systems}}, publisher = {{Springer}}, title = {{{Distribution Network Optimization: Predicting computation times to design scenario analysis for network operators}}}, doi = {{10.1007/s12667-023-00572-5}}, year = {{2023}}, } @inproceedings{44035, abstract = {{Abstract. Friction-spinning as an innovative incremental forming process enables large degrees of deformation in tube and sheet metal-forming due to a self-induced heat generation in the forming zone. This paper presents new process designs for energy and resource-efficient forming of gas cylinders by friction-spinning without the use of an external heat supply. The self-generated heat enables friction-spinning process to reduce the energy demand in the manufacture of gas cylinders, which are usually manufactured with external heat (mostly fossil fuels), by 95 %. Typical gas cylinder contours, such as flattened and spherical bottom ends and cylinder necks, are manufactured by friction-spinning of AW 6060 tubular profiles with specifically designed tool path strategies. It is shown that friction-spinning enables the manufacture of typical gas cylinder contours with sufficient wall thickness and the required gas tightness without the input of external heat. Thus, this process can contribute to an increase in the energy and resource efficiency of forming processes. }}, author = {{Dahms, Frederik and Homberg, Werner}}, booktitle = {{Materials Research Proceedings}}, issn = {{2474-395X}}, location = {{Krakau}}, publisher = {{Materials Research Forum LLC}}, title = {{{Energy and Resource-efficient Forming of Gas Cylinders by Friction-Spinning}}}, doi = {{10.21741/9781644902479-208}}, year = {{2023}}, } @article{43391, abstract = {{The technical importance of paraffins as phase change materials (PCM) in heat storage systems increases. Knowledge on the thermal conductivity of paraffins is necessary for the design and optimization of heat storage systems. However, for most paraffins solely the thermal conductivity of the liquid state has been sufficiently investigated. For the solid state, precise thermal conductivity data are only known for a few paraffins, while only generalized values are available for the remainder, some of which contradict each other. In this study, a measurement setup based on the modified guarded hot plate method is developed. It is used to investigate the thermal conductivity of several paraffines in the solid state, including pure n-docosane and its compounds with different types and concentrations of graphite. For n-docosane in the solid state, the thermal conductivity is determined to be 0.49 W/(m K). A particle size of 200 μm with a spherical shape turns out to be optimal to increase the thermal conductivity. This allows the thermal conductivity of a compound with 10% graphite to increase by a factor of three compared to the pure paraffin. Furthermore, significant differences to thermal conductivity data from the literature are found.}}, author = {{Paul, Andreas and Baumhögger, Elmar and Dewerth, Mats-Ole and Hami Dindar, Iman and Sonnenrein, Gerrit and Vrabec, Jadran}}, issn = {{1388-6150}}, journal = {{Journal of Thermal Analysis and Calorimetry}}, keywords = {{Physical and Theoretical Chemistry, Condensed Matter Physics}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Thermal conductivity of solid paraffins and several n-docosane compounds with graphite}}}, doi = {{10.1007/s10973-023-12107-2}}, year = {{2023}}, } @inproceedings{43394, abstract = {{Die für die Berechnung des Energieeffizienzindex von Haushaltskältegeräten benötigten Parameter werden durch Norm-Messungen im Neuzustand der Geräte bestimmt. Aus früheren Untersuchungen ist bekannt, dass durch verschiedene technische Alterungsmechanismen der Energieverbrauch über eine Produktlebensdauer von 18 Jahren um bis zu 33 % zunehmen kann. Ziel des vom BMWi geförderten Projekts ALGE war es, die verschie-denen Ursachen und Einflussgrößen für die Alterung von Haushaltskältegeräten zu ermitteln und eine Alterungs-funktion zu bestimmen, die den zeitlichen Verlauf des zunehmenden Energieverbrauchs beschreibt. In diesem Projekt wurde das Alterungsverhalten von Haushaltskältegeräten durch 100 Normenergieverbrauchs-messungen an 32 real gealterten Geräten untersucht. Aus den gewonnenen Ergebnissen konnte eine Alterungs-funktion bestimmt werden, die den Anstieg des Energieverbrauchs beschreibt. Alle untersuchten Geräte wurden an der Universität Paderborn im Neuzustand vermessen und nach einer Laufzeit von bis zu 21 Jahren erneut geprüft. Bereits nach einem zweijährigen Betrieb konnte ein Mehrverbrauch von bis zu 11 % festgestellt werden. Über die durchschnittliche Produktlebensdauer von Haushaltskältegeräten von ca. 16 Jahren steigert sich der Energieverbrauch um durchschnittlich 27 %. Im Rahmen des Projekts wurden verschiedene Systemkomponenten, wie Isolierung und Verdichter, hinsichtlich ihres Alterungsverhaltens untersucht. Bei dem im Gehäuse als Isolierung verwendeten PUR-Schaum konnte über einen Zeitraum von 31 Monaten ein Anstieg der Wärmeleitfähigkeit von 19,5 W/(m⋅K) auf 24,5 W/(m⋅K) festge-stellt werden. Zur Untersuchung der Alterung der Verdichter wurden zuvor auf einem Kalorimeterteststand ver-messene Verdichter in Geräte eingebaut. Nach einem zweijährigen Betrieb wurden diese Verdichter wieder aus-gebaut und erneut vermessen. Hierbei konnte keine Änderung des COP festgestellt werden. Zusätzlich zu den technischen Parametern wurde der Einfluss des Verbraucherverhaltens analysiert. Hier zeigte sich, dass bis zu 33 % des Gesamtenergieverbrauchs nach einer mehrjährigen Nutzungsdauer verbraucherinduziert sein können.}}, author = {{Paul, Andreas and Baumhögger, Elmar and Elsner, Andreas and Reineke, Michael and Kasper, Tina and Schumacher, Daniel and Vrabec, Jadran and Hüppe, Christian and Stamminger, Rainer and Hölscher, Heike and Stoll, Ragnar and Wagner, Hendrik and Gries, Ulrich and Becker, Wolfgang}}, isbn = {{978-3-932715-55-6}}, keywords = {{Haushaltskältegeräte, Energieverbrauch, Alterung, Verdichter, PUR-Schaum}}, location = {{Magdeburg}}, publisher = {{Deutscher Kälte‐ und Klimatechnischer Verein e.V.}}, title = {{{Alterungsmechanismen von Haushaltskältegeräten}}}, year = {{2023}}, } @article{43034, abstract = {{Abstract The accessibility to rheological parameters for concrete is becoming more and more relevant. This is mainly related to the constantly emerging challenges, such as not only the development of high-strength concretes is progressing very fast but also the simulation of the flow behaviour is of high importance. The main problem, however, is that the rheological characterisation of fresh concrete is not possible via commercial rheometers. The so-called concrete rheometers provide valuable relative values for comparing different concretes, but they cannot measure absolute values. Therefore, we developed an adaptive coaxial concrete rheometer (ACCR) that allows the measurement of fresh concrete with particles up to d max = 5.5 mm {d}_{{\rm{\max }}}=5.5\hspace{.5em}{\rm{mm}} . The comparison of the ACCR with a commercial rheometer showed very good agreement for selected test materials (Newtonian fluid, shear thinning fluid, suspension, and yield stress fluid), so that self-compacting concrete was subsequently measured. Since these measurements showed a very high reproducibility, the rheological properties of the fresh concrete could be determined with high accuracy. The common flow models (Bingham (B), Herschel–Bulkley, modified Bingham (MB) models) were also tested for their applicability, with the Bingham and the modified Bingham model proving to be the best suitable ones.}}, author = {{Josch, Sebastian and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, issn = {{1617-8106}}, journal = {{Applied Rheology}}, keywords = {{Condensed Matter Physics, General Materials Science}}, number = {{1}}, publisher = {{Walter de Gruyter GmbH}}, title = {{{Development of an adaptive coaxial concrete rheometer and rheological characterisation of fresh concrete}}}, doi = {{10.1515/arh-2022-0140}}, volume = {{33}}, year = {{2023}}, } @inproceedings{44225, author = {{Jende, Yvonne Kristin}}, booktitle = {{Solidarités. Réseaux – Convivialités – Confrontations/ Solidarities. Networks – Convivialities – Confrontations, 44. Annual Conference of the Association for Canadian Studies in German-Speaking Countries}}, location = {{Grainau}}, title = {{{Please Mind the Gap. Reconfiguring Solidarity through Space in Michael Nicoll Yahgulanaas' Haida Manga Art.}}}, year = {{2023}}, } @article{43128, author = {{Rüther, Moritz Johannes and Klippstein, Sven Helge and Ponusamy, SathishKumar and Rüther, Torben and Schmid, Hans-Joachim}}, issn = {{0032-5910}}, journal = {{Powder Technology}}, keywords = {{General Chemical Engineering}}, publisher = {{Elsevier BV}}, title = {{{Flowability of polymer powders at elevated temperatures for additive manufacturing}}}, doi = {{10.1016/j.powtec.2023.118460}}, volume = {{422}}, year = {{2023}}, } @article{39057, author = {{Wippermann, Jan and Meschut, Gerson and Koschukow, Wikentji and Liebsch, Alexander and Gude, Maik and Minch, Steven and Kolbe, Björn}}, issn = {{0043-2288}}, journal = {{Welding in the World}}, keywords = {{Metals and Alloys, Mechanical Engineering, Mechanics of Materials}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Thermal influence of resistance spot welding on a nearby overmolded thermoplastic–metal joint}}}, doi = {{10.1007/s40194-023-01465-y}}, year = {{2023}}, } @article{44232, author = {{Wippermann, Jan and Koshukow, Wikentij and Liebsch, Alexander and Kolbe, Björn and Meschut, Gerson and Gude, Maik}}, journal = {{Tagungsband Münchener Leichtbauseminar 2022}}, title = {{{Influence of plasma coating pretreatment on the adhesion of thermoplastics to metals}}}, year = {{2023}}, } @inproceedings{44244, author = {{Ponusamy, SathishKumar and Schmid, Hans-Joachim}}, location = {{Braunschweig}}, title = {{{Dynamisch-mechanische Polymerpartikelverrundung zur Verbesserung der Fließfähigkeit für das selektive Lasersintern}}}, year = {{2023}}, } @inbook{44249, abstract = {{State education in honest tax payment can be understood as a facet of training in citizenship, i.e. as an attempt by the modern state to standardize the behavior of its citizens and to prevent deviations. Based on this Foucauldian understanding, this exploratory article examines tax education in the United States, Spain, and West Germany from the mid-1940s to the late 1980s. During this period, the USA asserted itself as the champion of tax education and Spain consistently tried to emulate this example, albeit with more modest means and different semantic strategies from as early as the 1960s, when it was still under a autoritarian regime. The FRG, however, completely discontinued its few early attempts at tax education from the mid-1950s onwards. Even during the economic crises and tax scandals of the 1970s, there was no relaunch of the programs. The article locates the reasons for this highly uneven development in the different ideal images of the citizen in the three states.}}, author = {{Schönhärl, Korinna and Düll, Nasrin and Ramírez Lugo , Nadya Melina}}, booktitle = {{Tax Evasion and Tax Havens since the Nineteenth Century }}, editor = {{Sébastien, Guex and Hadrien, Buclin}}, pages = {{355--376}}, publisher = {{Springer}}, title = {{{Tax Education After WWII: How Spain, the USA, and West Germany Tried to Make Their Citizens Pay Honestly}}}, year = {{2023}}, } @article{44264, author = {{Behler, Felix}}, issn = {{2754-2416}}, journal = {{Interdisciplinary Discourses, Education and Analysis (IDEA)}}, number = {{3}}, pages = {{5--21}}, title = {{{Recapturing Old England – Nostalgia, Aristo-Anglophilia, and the Historical Roots of ITV’s ‘Downton Abbey’}}}, volume = {{1}}, year = {{2023}}, } @inproceedings{44154, abstract = {{Abstract. Due to an increasing volume of shipments, there is a significant need for more delivery vehicles. One approach to reduce the associated increase in carbon dioxide (CO2) emissions is a new light weight design approach involving the substitution of conventional materials with glass fiber mat-reinforced thermoplastics (GMT) based on polypropylene (PP). The application of GMT by compression molding is a widely used process in the automotive industry. However, application in the commercial vehicle sector requires much larger dimensions, making it necessary to clarify whether the manufacturing process and material are suitable for semi-structural applications on this scale. To find this out, two replacement geometries are abstracted in this study and manufactured by varying the main manufacturing parameters. The feasibility can be demonstrated by recording and analyzing the resulting process variables and measuring the formed fiber distribution. At the end of the paper, recommendations are given for the production of GMT structures on the scale of commercial vehicles. }}, author = {{Lückenkötter, Julian and Leimbach, J.P. and Stallmeister, Tim and Marten, Thorsten and Tröster, Thomas}}, booktitle = {{Materials Research Proceedings}}, issn = {{978-1-64490-247-9}}, keywords = {{Compression Molding, Fiber Content, Process Development, Lightweight Design}}, location = {{Krakow, Poland}}, pages = {{249--258}}, publisher = {{Materials Research Forum LLC}}, title = {{{Feasibility Study of Compression Molding for Large Reinforcement Structures in the Commercial Vehicle Sector}}}, doi = {{10.21741/9781644902479-27}}, volume = {{28}}, year = {{2023}}, } @article{42679, abstract = {{The Saharan desert ant Cataglyphis bombycina is densely covered with shiny silver setae (hair-like structures). Their appearance was explained by geometric optics and total internal reflection. The setae also increase the emissivity of the ant, as they form an effective medium. This work provides additional data on microstructural details of the setae that are used to simulate the scattering of an individual seta to explain their influence on the optical properties. This is achieved by characterization of their structure using light microscopy and scanning/transmission electron microscopy. How the microstructural features influence scattering is investigated wave-optically within the limits of finite-difference time-domain simulations from the ultraviolet to the mid-infrared spectral range to elucidate the optical effects beyond ray optics and effective medium theory. The results show that Mie scattering plays an important role in protecting the ant from solar radiation and could be relevant for its thermal tolerance.}}, author = {{Schwind, Bertram and Wu, Xia and Tiemann, Michael and Fabritius, Helge-Otto}}, issn = {{0740-3224}}, journal = {{Journal of the Optical Society of America B}}, keywords = {{Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics}}, number = {{3}}, pages = {{B49 -- B58}}, publisher = {{Optica Publishing Group}}, title = {{{Broadband Mie scattering effects by structural features of setae from the Saharan silver ant Cataglyphis bombycina}}}, doi = {{10.1364/josab.474899}}, volume = {{40}}, year = {{2023}}, } @article{43457, abstract = {{The production of hydrogen and the utilization of biomass for sustainable concepts of energy conversion and storage require gas sensors that discriminate between hydrogen (H2) and carbon monoxide (CO). Mesoporous copper–ceria (Cu–CeO2) materials with large specific surface areas and uniform porosity are prepared by nanocasting, and their textural properties are characterized by N2 physisorption, powder XRD, scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectroscopy. The oxidation states of copper (Cu+, Cu2+) and cerium (Ce3+, Ce4+) are investigated by XPS. The materials are used as resistive gas sensors for H2 and CO. The sensors show a stronger response to CO than to H2 and low cross-sensitivity to humidity. Copper turns out to be a necessary component; copper-free ceria materials prepared by the same method show only poor sensing performance. By measuring both gases (CO and H2) simultaneously, it is shown that this behavior can be utilized for selective sensing of CO in the presence of H2.}}, author = {{Baier, Dominik and Priamushko, Tatiana and Weinberger, Christian and Kleitz, Freddy and Tiemann, Michael}}, issn = {{2379-3694}}, journal = {{ACS Sensors}}, keywords = {{Fluid Flow and Transfer Processes, Process Chemistry and Technology, Instrumentation, Bioengineering}}, number = {{4}}, pages = {{1616 -- 1623}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Selective Discrimination between CO and H2 with Copper–Ceria-Resistive Gas Sensors}}}, doi = {{10.1021/acssensors.2c02739}}, volume = {{8}}, year = {{2023}}, } @inproceedings{43044, abstract = {{Abstract. The combination of incremental sheet metal forming and high-speed forming offers new possibilities for flexible forming processes in the production of large sheet metal components of increased complexity with relatively low forming energies. In this paper, the general feasibility and process differences between the pulse-driven high-speed forming technologies of electrohydraulic and electromagnetic forming were investigated. An example component made of EN AW 6016 aluminum sheet metal was thus formed incrementally by both processes and the forming result evaluated by an optical 3D measurement system. For this purpose, a forming strategy for electromagnetic incremental forming (EMIF) was developed, tested and adapted to the electrohydraulic incremental forming process (EHIF). The discharge energy, the tool displacement and the pressure field of the forming zone were determined as relevant parameters for the definition of an adequate tool path strategy. It was found that the EHIF process is less affected by larger distances between the tool and the blank, while this is a critical variable for force application to the component during EMIF. On the other hand, the more uniform pressure distribution of the EMIF process is advantageous for forming large steady component areas. }}, author = {{Holzmüller, Maik and Linnemann, Maik and Homberg, Werner and Psyk, Verena and Kräusel, Verena and Kroos, Janika}}, booktitle = {{Materials Research Proceedings}}, issn = {{2474-395X}}, keywords = {{Incremental Sheet Forming, Aluminium, High-Speed Forming}}, location = {{Nürnberg}}, pages = {{11--18}}, publisher = {{Materials Research Forum LLC}}, title = {{{Proof of concept for incremental sheet metal forming by means of electromagnetic and electrohydraulic high-speed forming}}}, doi = {{10.21741/9781644902417-2}}, volume = {{25}}, year = {{2023}}, } @article{43045, abstract = {{The pressure fields generated by two simultaneous discharges have not been investigated on any notable scale for the electrohydraulic impulse forming method. In this study, the synchronicity of two discharges is ensured by the sequential connection of two wires mounted in two spark gaps in a common volume of liquid. The objective is to experimentally confirm the equilibrium of the energies evolved in two spark gaps by means of pressure measurements. In addition, multipoint membrane pressure gauges demonstrated the feasibility of easily recording detailed pressure maps. Based on the membrane deformation mechanism and material strengthening under static and impulse conditions, the processing procedure is further developed so as to achieve better accuracy in the determination of pressure field parameters. The practical equality of the pressure fields on the left and right halves of the flat-loaded area confirms the equality of energies evolved in the two spark gaps. The direct shock waves create zones with the most intensive loading. These results provide a basis for the development of new electrohydraulic technologies involving the application of two simultaneous discharges with equal energy and pressure parameters.}}, author = {{Knyazyev, Mykhaylo and Holzmüller, Maik and Homberg, Werner}}, issn = {{2504-4494}}, journal = {{Journal of Manufacturing and Materials Processing}}, keywords = {{impulse, forming, electrohydraulic, discharge, wire, pressure gauge, pressure field}}, number = {{1}}, publisher = {{MDPI AG}}, title = {{{Investigation of Pressure Fields Generated by Two Simultaneous Discharges in Liquid Initiated by Wires}}}, doi = {{10.3390/jmmp7010040}}, volume = {{7}}, year = {{2023}}, } @article{44321, author = {{Neumann, Phillip}}, issn = {{0513-9066}}, journal = {{Zeitschrift für Heilpädagogik}}, keywords = {{Inklusion, Sonderpädagogik, Bildung, Bildungsstudien, Integration}}, number = {{5}}, pages = {{230--232}}, title = {{{Studien zu Schulleistungen und ihre Aufbereitung}}}, volume = {{74}}, year = {{2023}}, } @inproceedings{44320, author = {{Hami Dindar, Iman and Lutters, Nicole and Kenig, Eugeny}}, booktitle = {{Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik und Adsoprtion}}, location = {{Frankfurt am Main}}, title = {{{Wässrige Glucosaminlösung als neues Lösungsmittel zur CO2-Abscheidung }}}, year = {{2023}}, } @inproceedings{34171, abstract = {{State estimation when only a partial model of a considered system is available remains a major challenge in many engineering fields. This work proposes a joint, square-root unscented Kalman filter to estimate states and model uncertainties simultaneously by linear combinations of physics-motivated library functions. Using a sparsity promoting approach, a selection of those linear combinations is chosen and thus an interpretable model can be extracted. Results indicate a small estimation error compared to a traditional square-root unscented Kalman filter and exhibit the enhancement of physically meaningful models.}}, author = {{Götte, Ricarda-Samantha and Timmermann, Julia}}, booktitle = {{12th IFAC Symposium on Nonlinear Control Systems (NOLCOS 2022)}}, keywords = {{joint estimation, unscented transform, Kalman filter, sparsity, data-driven, compressed sensing}}, location = {{Canberra, Australien}}, number = {{1}}, pages = {{85--90}}, title = {{{Estimating States and Model Uncertainties Jointly by a Sparsity Promoting UKF}}}, doi = {{https://doi.org/10.1016/j.ifacol.2023.02.015}}, volume = {{56}}, year = {{2023}}, } @article{40981, abstract = {{Room temperature sodium-sulfur (RT Na-S) batteries are considered potential candidates for stationary power storage applications due to their low cost, broad active material availability and low toxicity. Challenges, such as high volume expansion of the S-cathode upon discharge, low electronic conductivity of S as active material and herewith limited rate capability as well as the shuttling of polysulfides (PSs) as intermediates often impede the cycle stability and practical application of Na-S batteries. Sulfurized poly(acrylonitrile) (SPAN) inherently inhibits the shuttling of PSs and shows compatibility with carbonate-based electrolytes, however, its exact redox mechanism remained unclear to date. Herein, we implement a commercially available and simple electrolyte into the Na-SPAN cell chemistry and demonstrate its high rate and cycle stability. Through the application of in situ techniques utilizing electronic impedance spectroscopy (EIS) and X-ray absorption spectroscopy (XAS) at different depths of charge and discharge, an insight into SPAN’s redox chemistry is obtained.}}, author = {{Kappler, Julian and Tonbul, Güldeniz and Schoch, Roland and Murugan, Saravanakumar and Nowakowski, Michał and Lange, Pia Lena and Klostermann, Sina Vanessa and Bauer, Matthias and Schleid, Thomas and Kästner, Johannes and Buchmeiser, Michael Rudolf}}, issn = {{0013-4651}}, journal = {{Journal of The Electrochemical Society}}, keywords = {{Materials Chemistry, Electrochemistry, Surfaces, Coatings and Films, Condensed Matter Physics, Renewable Energy, Sustainability and the Environment, Electronic, Optical and Magnetic Materials}}, number = {{1}}, publisher = {{The Electrochemical Society}}, title = {{{Understanding the Redox Mechanism of Sulfurized Poly(acrylonitrile) as Highly Rate and Cycle Stable Cathode Material for Sodium-Sulfur Batteries}}}, doi = {{10.1149/1945-7111/acb2fa}}, volume = {{170}}, year = {{2023}}, } @article{44382, abstract = {{The success of engineering complex technical systems is determined by meeting customer requirements and institutional regulations. One example relevant to the automobile industry is the United Nations Economic Commission of Europe (UN ECE), which specifies the homologation of automobile series and requires proof of traceability. The required traceability can be achieved by modeling system artifacts and their relations in a consistent, seamless model—an effect-chain model. Currently, no in-depth methodology exists to support engineers in developing certification-compliant effect-chain models. For this purpose, a new methodology for certification-compliant effect-chain modeling was developed, which includes extensions of an existing method, suitable models, and tools to support engineers in the modeling process. For evaluation purposes, applicability is proven based on the experience of more than 300 workshops at an automotive OEM and an automotive supplier. The following case example is chosen to demonstrate applicability: the development of a window lifter that has to meet the demands of UN ECE Regulations R156 and R21. Results indicate multiple benefits in supporting engineers with the certification-compliant modeling of effect chains. Three benefits are goal-oriented modeling to reduce the necessary modeling capacity, increasing model quality by applying information quality criteria, and the potential to reduce costs through automatable effect-chain analyses for technical changes. Further, companies in the automotive and other industries will benefit from increased modeling capabilities that can be used for architecture modeling and to comply with other regulations such as ASPICE or ISO 26262.}}, author = {{Gräßler, Iris and Wiechel, Dominik and Koch, Anna-Sophie and Sturm, Tim and Markfelder, Thomas}}, issn = {{2079-8954}}, journal = {{Systems}}, keywords = {{Information Systems and Management, Computer Networks and Communications, Modeling and Simulation, Control and Systems Engineering, Software}}, number = {{3}}, publisher = {{MDPI AG}}, title = {{{Methodology for Certification-Compliant Effect-Chain Modeling}}}, doi = {{10.3390/systems11030154}}, volume = {{11}}, year = {{2023}}, } @inproceedings{44380, author = {{Tonbul, Güldeniz and Kappler, Julian and Murugan, Saravanakumar and Schoch, Roland and Nowakowski, Michal and Lange, Pia and Bauer, Matthias and Buchmeiser, Michael R.}}, location = {{Aachen}}, title = {{{Characterization of Na-S Battery System Using X-ray Absorption Spectroscopy}}}, year = {{2023}}, } @inproceedings{44390, abstract = {{The development of autonomous vehicles and their introduction in urban traffic offer many opportunities for traffic improvements. In this paper, an approach for a future traffic control system for mixed autonomy traffic environments is presented. Furthermore, a simulation framework based on the city of Paderborn is introduced to enable the development and examination of such a system. This encompasses multiple elements including the road network itself, traffic lights, sensors as well as methods to analyse the topology of the network. Furthermore, a procedure for traffic demand generation and routing is presented based on statistical data of the city and traffic data obtained by measurements. The resulting model can receive and apply the generated control inputs and in turn generates simulated sensor data for the control system based on the current system state.}}, author = {{Link, Christopher and Malena, Kevin and Gausemeier, Sandra and Trächtler, Ansgar}}, booktitle = {{Proceedings of the 9th International Conference on Vehicle Technology and Intelligent Transport Systems}}, isbn = {{978-989-758-652-1}}, keywords = {{Traffic Simulation, Traffic Control, Car2X, Mixed Autonomy, Autonomous Vehicles, SUMO, Sensor Simulation, Traffic Demand Generation, Routing, Traffic Lights, Graph Analysis, Traffic Observer}}, location = {{Prague, Czech Republic}}, publisher = {{SCITEPRESS - Science and Technology Publications}}, title = {{{Simulation Environment for Traffic Control Systems Targeting Mixed Autonomy Traffic Scenarios}}}, doi = {{10.5220/0011987600003479}}, year = {{2023}}, } @inproceedings{44444, author = {{Althaus, Maike and Müller, Michelle and Vorbohle, Christian and Kundisch, Dennis}}, booktitle = {{Proceedings of the International Conference on Challenges in Managing Smart Products and Services (CHIMSPAS 2023)}}, location = {{Bielefeld}}, title = {{{Business Models for Cultural Event Platforms – A Taxonomy Approach}}}, year = {{2023}}, } @inproceedings{44053, author = {{Laux, Florian and Poniatowski, Martin and Kundisch, Dennis}}, booktitle = {{Proceedings of the 31st European Conference on Information Systems (ECIS)}}, location = {{Kristiansand, Norway}}, title = {{{May I have your Attention, please? – The Interaction between Attention Screening and Reputation on Crowdworking Platforms}}}, year = {{2023}}, } @inproceedings{44103, author = {{Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, location = {{Berlin}}, title = {{{Particles as Seeds for Instabilities in Uniaxially Elongated Polymer Suspension Filaments (Presentation)}}}, year = {{2023}}, } @article{44477, author = {{Küster, Christine and Klünder, Nina and Wagenknecht, Inga}}, issn = {{2626-0913}}, journal = {{Hauswirtschaft und Wissenschaft}}, pages = {{1--12}}, publisher = {{Deutsche Gesellschaft für Hauswirtschaft e.V.}}, title = {{{Haushaltswissenschaft – Eine Diskussionsgrundlage}}}, doi = {{ 10.23782/HUW_09_2023}}, volume = {{71}}, year = {{2023}}, } @inbook{35063, author = {{Meine, Sabine and Otto, Arnold and Süßmann, Johannes}}, booktitle = {{Musiklandschaften zwischen Rhein und Weser. Pluralisierung und Verflechtung entlang des Hellwegs in der Frühen Neuzeit. Unter Mitarbeit v. Markus Lauert}}, isbn = {{978-3-8260-7218-5}}, pages = {{7–42}}, publisher = {{Königshausen & Neumann}}, title = {{{Musiklandschaften zwischen Rhein und Weser – Einführung}}}, doi = {{https://doi.org/10.36202/9783826077920}}, year = {{2023}}, } @inproceedings{20841, author = {{Gharibian, Sevag and Watson, James and Bausch, Johannes}}, booktitle = {{Proceedings of the 40th International Symposium on Theoretical Aspects of Computer Science (STACS)}}, pages = {{54:1--54:21}}, title = {{{The Complexity of Translationally Invariant Problems beyond Ground State Energies}}}, doi = {{https://doi.org/10.4230/LIPIcs.STACS.2023.54}}, volume = {{254}}, year = {{2023}}, } @unpublished{44501, abstract = {{Extending the notion of maxcut, the study of the frustration index of signed graphs is one of the basic questions in the theory of signed graphs. Recently two of the authors initiated the study of critically frustrated signed graphs. That is a signed graph whose frustration index decreases with the removal of any edge. The main focus of this study is on critical signed graphs which are not edge-disjoint unions of critically frustrated signed graphs (namely non-decomposable signed graphs) and which are not built from other critically frustrated signed graphs by subdivision. We conjecture that for any given k there are only finitely many critically k-frustrated signed graphs of this kind. Providing support for this conjecture we show that there are only two of such critically 3-frustrated signed graphs where there is no pair of edge-disjoint negative cycles. Similarly, we show that there are exactly ten critically 3-frustrated signed planar graphs that are neither decomposable nor subdivisions of other critically frustrated signed graphs. We present a method for building non-decomposable critically frustrated signed graphs based on two given such signed graphs. We also show that the condition of being non-decomposable is necessary for our conjecture. }}, author = {{Cappello, Chiara and Naserasr, Reza and Steffen, Eckhard and Wang, Zhouningxin}}, booktitle = {{arXiv:2304.10243}}, title = {{{Critically 3-frustrated signed graphs}}}, year = {{2023}}, } @article{42517, author = {{Tapio, Kosti and Kielar, Charlotte and Parikka, Johannes M. and Keller, Adrian and Järvinen, Heini and Fahmy, Karim and Toppari, J. Jussi}}, issn = {{0897-4756}}, journal = {{Chemistry of Materials}}, keywords = {{Materials Chemistry, General Chemical Engineering, General Chemistry}}, pages = {{1961–1971}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Large-Scale Formation of DNA Origami Lattices on Silicon}}}, doi = {{10.1021/acs.chemmater.2c03190}}, volume = {{35}}, year = {{2023}}, } @article{42518, author = {{Pothineni, Bhanu Kiran and Keller, Adrian}}, issn = {{2699-9307}}, journal = {{Advanced NanoBiomed Research}}, keywords = {{General Medicine}}, publisher = {{Wiley}}, title = {{{Nanoparticle‐Based Formulations of Glycopeptide Antibiotics: A Means for Overcoming Vancomycin Resistance in Bacterial Pathogens?}}}, doi = {{10.1002/anbr.202200134}}, volume = {{3}}, year = {{2023}}, } @article{44503, author = {{Hanke, Marcel and Tomm, Emilia and Grundmeier, Guido and Keller, Adrian}}, issn = {{1439-4227}}, journal = {{ChemBioChem}}, keywords = {{Organic Chemistry, Molecular Biology, Molecular Medicine, Biochemistry}}, publisher = {{Wiley}}, title = {{{Effect of Ionic Strength on the Thermal Stability of DNA Origami Nanostructures}}}, doi = {{10.1002/cbic.202300338}}, year = {{2023}}, } @article{44504, author = {{Linko, Veikko and Keller, Adrian}}, issn = {{1613-6810}}, journal = {{Small}}, keywords = {{Biomaterials, Biotechnology, General Materials Science, General Chemistry}}, publisher = {{Wiley}}, title = {{{Stability of DNA Origami Nanostructures in Physiological Media: The Role of Molecular Interactions}}}, doi = {{10.1002/smll.202301935}}, year = {{2023}}, } @phdthesis{44509, author = {{Kruse, Anne}}, isbn = {{978-3-8440-8955-4}}, pages = {{145}}, title = {{{Entwicklung einer Methode zur Integration der Additiven Fertigung in die Serienproduktion am Beispiel des Lasersinterns}}}, volume = {{27}}, year = {{2023}}, } @unpublished{44512, abstract = {{For open world applications, deep neural networks (DNNs) need to be aware of previously unseen data and adaptable to evolving environments. Furthermore, it is desirable to detect and learn novel classes which are not included in the DNNs underlying set of semantic classes in an unsupervised fashion. The method proposed in this article builds upon anomaly detection to retrieve out-of-distribution (OoD) data as candidates for new classes. We thereafter extend the DNN by $k$ empty classes and fine-tune it on the OoD data samples. To this end, we introduce two loss functions, which 1) entice the DNN to assign OoD samples to the empty classes and 2) to minimize the inner-class feature distances between them. Thus, instead of ground truth which contains labels for the different novel classes, the DNN obtains a single OoD label together with a distance matrix, which is computed in advance. We perform several experiments for image classification and semantic segmentation, which demonstrate that a DNN can extend its own semantic space by multiple classes without having access to ground truth.}}, author = {{Uhlemeyer, Svenja and Lienen, Julian and Hüllermeier, Eyke and Gottschalk, Hanno}}, booktitle = {{arXiv:2305.00983}}, title = {{{Detecting Novelties with Empty Classes}}}, year = {{2023}}, } @inproceedings{44521, author = {{Wurst, Johanna and Steinhoff, Timon and Mozgova, Iryna and Hassel, Thomas and Lachmayer, Roland}}, title = {{{Aspects of a Sustainability Focused Comparison of the Wire Arc Additive Manufacturing (WAAM) and the Laser Powder Bed Fusion (LPBF) Process}}}, doi = {{10.1007/978-981-19-9205-6_9}}, year = {{2023}}, } @inproceedings{44522, author = {{Wurst, Johanna and Rosemann, Daniel and Mozgova, Iryna and Lachmayer, Roland}}, title = {{{Concept and Implementation of a Student Design Project for the Development of Sustainable Products}}}, doi = {{10.1007/978-3-031-28839-5_88}}, year = {{2023}}, } @article{44523, author = {{Paradies, Jan}}, issn = {{0001-4842}}, journal = {{Accounts of Chemical Research}}, keywords = {{General Medicine, General Chemistry}}, number = {{7}}, pages = {{821--834}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Structure–Reactivity Relationships in Borane-Based FLP-Catalyzed Hydrogenations, Dehydrogenations, and Cycloisomerizations}}}, doi = {{10.1021/acs.accounts.2c00832}}, volume = {{56}}, year = {{2023}}, } @book{44524, editor = {{Meier-Gräwe, Uta and Praetorius, Ina and Tecklenburg, Feline}}, isbn = {{9783847425922}}, pages = {{307}}, publisher = {{Verlag Barbara Budrich}}, title = {{{Wirtschaft neu ausrichten. Care-Initiativen in Deutschland, Österreich und der Schweiz.}}}, year = {{2023}}, } @article{44545, abstract = {{IntroductionExergames are increasingly used in rehabilitation settings for older adults to train physical and cognitive abilities. To meet the potential that exergames hold, they need to be adapted to the individual abilities of the player and their training objectives. Therefore, it is important to know whether and how game characteristics affect their playing. The aim of this study is to investigate the effect of two different kinds of exergame (step game and balance game) played at two difficulty levels on brain activity and physical activity.MethodsTwenty-eight older independently living adults played two different exergames at two difficulty levels each. In addition, the same movements as during gaming (leaning sideways with feet in place and stepping sideways) were performed as reference movements. Brain activity was recorded using a 64-channel EEG system to assess brain activity, while physical activity was recorded using an accelerometer at the lower back and a heart rate sensor. Source-space analysis was applied to analyze the power spectral density in theta (4 Hz–7 Hz) and alpha-2 (10 Hz–12 Hz) frequency bands. Vector magnitude was applied to the acceleration data.ResultsFriedman ANOVA revealed significantly higher theta power for the exergaming conditions compared to the reference movement for both games. Alpha-2 power showed a more diverse pattern which might be attributed to task-specific conditions. Acceleration decreased significantly from the reference movement to the easy condition to the hard condition for both games.DiscussionThe results indicate that exergaming increases frontal theta activity irrespective of type of game or difficulty level, while physical activity decreases with increasing difficulty level. Heart rate was found to be an inappropriate measure in this population older adults. These findings contribute to understanding of how game characteristics affect physical and cognitive activity and consequently need to be taken into account when choosing appropriate games and game settings for exergame interventions.}}, author = {{Müller, Helen and Baumeister, Jochen and Bardal, Ellen Marie and Vereijken, Beatrix and Skjæret-Maroni, Nina}}, issn = {{1663-4365}}, journal = {{Frontiers in Aging Neuroscience}}, keywords = {{Cognitive Neuroscience, Aging}}, publisher = {{Frontiers Media SA}}, title = {{{Exergaming in older adults: the effects of game characteristics on brain activity and physical activity}}}, doi = {{10.3389/fnagi.2023.1143859}}, volume = {{15}}, year = {{2023}}, } @inbook{43170, author = {{Labusch, Amelie and Eickelmann, Birgit}}, booktitle = {{Teaching coding in K-12 schools: Research and application}}, editor = {{Keane, T. and Fluck, A. E.}}, isbn = {{9783031219696}}, pages = {{319--329}}, publisher = {{Springer International Publishing}}, title = {{{Learning Computational Thinking in Secondary School (Year 8) in Germany in International Comparison: Results from ICILS 2018}}}, doi = {{10.1007/978-3-031-21970-2_21}}, year = {{2023}}, } @inbook{44626, author = {{Schulze, Johanna and Drossel, Kerstin and Eickelmann, Birgit}}, booktitle = {{Professionalisierung für digitale Bildung im Grundschulalter - Ergebnisse des Forschungsprojekts P3DiG }}, editor = {{Irion, T. and Böttinger, T. and Kammerl, R.}}, pages = {{15--30}}, publisher = {{Waxmann Verlag}}, title = {{{Die inhaltliche Ausgestaltung schulischer Medienkonzepte als Gelingensbedingung digitalisierungsbezogener Schulentwicklungsprozesse}}}, doi = {{DOI:10.31244/9783830996415}}, year = {{2023}}, } @techreport{44627, author = {{Gerick, J. and Eickelmann, Birgit and Panten, B. and Rothärmel, A. and Rau, M. and Gottschalk, T.}}, publisher = {{Technische Universität Braunschweig/Universität Paderborn}}, title = {{{Abschlussbericht zum Forschungsprojekt ‚Gelingensbedingungen und Transfer von erfolgreichen Digitalisierungsprozessen an Schulen in Nordrhein-Westfalen (GuTe DigiSchulen NRW)}}}, year = {{2023}}, }