@inproceedings{21272, author = {{Ködding, Patrick and Dumitrescu, Roman}}, booktitle = {{Digitalisisierung souverän gestalten}}, editor = {{Hartmann, Ernst A.}}, pages = {{pp. 59--73}}, publisher = {{Springer Vieweg}}, title = {{{Forschungsfelder für Künstliche Intelligenz in der strategischen Produktplanung}}}, year = {{2021}}, } @article{23843, author = {{Meier, F. and Protte, M. and Baron, E. and Feneberg, M. and Goldhahn, R. and Reuter, Dirk and As, Donat Josef}}, issn = {{2158-3226}}, journal = {{AIP Advances}}, title = {{{Selective area growth of cubic gallium nitride on silicon (001) and 3C-silicon carbide (001)}}}, doi = {{10.1063/5.0053865}}, year = {{2021}}, } @article{47963, abstract = {{Nonlinear and quantum optical devices based on periodically-poled thin film lithium niobate (PP-TFLN) have gained considerable interest lately, due to their significantly improved performance as compared to their bulk counterparts. Nevertheless, performance parameters such as conversion efficiency, minimum pump power, and spectral bandwidth strongly depend on the quality of the domain structure in these PP-TFLN samples, e.g., their homogeneity and duty cycle, as well as on the overlap and penetration depth of domains with the waveguide mode. Hence, in order to propose improved fabrication protocols, a profound quality control of domain structures is needed that allows quantifying and thoroughly analyzing these parameters. In this paper, we propose to combine a set of nanometer-to-micrometer-scale imaging techniques, i.e., piezoresponse force microscopy (PFM), second-harmonic generation (SHG), and Raman spectroscopy (RS), to access the relevant and crucial sample properties through cross-correlating these methods. Based on our findings, we designate SHG to be the best-suited standard imaging technique for this purpose, in particular when investigating the domain poling process in x-cut TFLNs. While PFM is excellently recommended for near-surface high-resolution imaging, RS provides thorough insights into stress and/or defect distributions, as associated with these domain structures. In this context, our work here indicates unexpectedly large signs for internal fields occurring in x-cut PP-TFLNs that are substantially larger as compared to previous observations in bulk LN.}}, author = {{Reitzig, Sven and Rüsing, Michael and Zhao, Jie and Kirbus, Benjamin and Mookherjea, Shayan and Eng, Lukas M.}}, issn = {{2073-4352}}, journal = {{Crystals}}, keywords = {{Inorganic Chemistry, Condensed Matter Physics, General Materials Science, General Chemical Engineering}}, number = {{3}}, publisher = {{MDPI AG}}, title = {{{“Seeing Is Believing”—In-Depth Analysis by Co-Imaging of Periodically-Poled X-Cut Lithium Niobate Thin Films}}}, doi = {{10.3390/cryst11030288}}, volume = {{11}}, year = {{2021}}, } @article{47964, abstract = {{In the last two decades, variably doped strontium barium niobate (SBN) has attracted a lot of scientific interest mainly due to its specific non-linear optical response. Comparably, the parental compound, i.e., undoped SBN, appears to be less studied so far. Here, two different cuts of single-crystalline nominally pure strontium barium niobate in the composition Sr0.61Ba0.39Nb2O6 (SBN61) are comprehensively studied and analyzed with regard to their photoconductive responses. We present conductance measurements under systematically varied illumination conditions along either the polar z-axis or perpendicular to it (x-cut). Apart from a pronounced photoconductance (PC) already under daylight and a large effect upon super-bandgap illumination in general, we observe (i) distinct spectral features when sweeping the excitation wavelength over the sub-bandgap region as then discussed in the context of deep and shallow trap states, (ii) extremely slow long-term relaxation for both light-on and light-off transients in the range of hours and days, (iii) a critical dependence of the photoresponse on the pre-illumination history of the sample, and (iv) a current–voltage hysteresis depending on both the illumination and the electrical-measurement conditions in a complex manner.}}, author = {{Beyreuther, Elke and Ratzenberger, Julius and Roeper, Matthias and Kirbus, Benjamin and Rüsing, Michael and Ivleva, Liudmila I. and Eng, Lukas M.}}, issn = {{2073-4352}}, journal = {{Crystals}}, keywords = {{Inorganic Chemistry, Condensed Matter Physics, General Materials Science, General Chemical Engineering}}, number = {{7}}, publisher = {{MDPI AG}}, title = {{{Photoconduction of Polar and Nonpolar Cuts of Undoped Sr0.61Ba0.39Nb2O6 Single Crystals}}}, doi = {{10.3390/cryst11070780}}, volume = {{11}}, year = {{2021}}, } @article{47965, abstract = {{Exceptionally electron-rich, nearly trigonal-planar tricyanidometalate anions [Fe(CN)3]7− and [Ru(CN)3]7− were stabilized in LiSr3[Fe(CN)3] and AE3.5[M(CN)3] (AE=Sr, Ba; M=Fe, Ru). They are the first examples of group 8 elements with the oxidation state of −IV. Microcrystalline powders were obtained by a solid-state route, single crystals from alkali metal flux. While LiSr3[Fe(CN)3] crystallizes in P63/m, the polar space group P63 with three-fold cell volume for AE3.5[M(CN)3] is confirmed by second harmonic generation. X-ray diffraction, IR and Raman spectroscopy reveal longer C−N distances (124–128 pm) and much lower stretching frequencies (1484–1634 cm−1) than in classical cyanidometalates. Weak C−N bonds in combination with strong M−C π-bonding is a scheme also known for carbonylmetalates. Instead of the formal notation [Fe−IV(CN−)3]7−, quantum chemical calculations reveal non-innocent intermediate-valent CN1.67− ligands and a closed-shell d10 configuration for Fe, that is, Fe2−.}}, author = {{Jach, Franziska and Wagner, Frank R. and Amber, Zeeshan H. and Rüsing, Michael and Hunger, Jens and Prots, Yurii and Kaiser, Martin and Bobnar, Matej and Jesche, Anton and Eng, Lukas M. and Ruck, Michael and Höhn, Peter}}, issn = {{1433-7851}}, journal = {{Angewandte Chemie International Edition}}, keywords = {{General Chemistry, Catalysis}}, number = {{29}}, pages = {{15879--15885}}, publisher = {{Wiley}}, title = {{{Tricyanidoferrates(−IV) and Ruthenates(−IV) with Non‐Innocent Cyanido Ligands}}}, doi = {{10.1002/anie.202103268}}, volume = {{60}}, year = {{2021}}, } @article{47973, abstract = {{Thin-film lithium niobate (TFLN) in the form of x- or z-cut lithium-niobate-on-insulator has attracted considerable interest as a very promising and novel platform for developing integrated optoelectronic (nano)devices and exploring fundamental research. Here, we investigate the coherent interaction length lc of optical second-harmonic generation (SHG) microscopy in such samples, that are purposely prepared into a wedge shape, in order to elegantly tune the geometrical confinement from bulk thicknesses down to approximately 50 nm. SHG microscopy is a very powerful and non-invasive tool for the investigation of structural properties in the biological and solid-state sciences, especially for visualizing and analyzing ferroelectric domains and domain walls. However, unlike in bulk lithium niobate (LN), SHG microscopy in TFLN is impacted by interfacial reflections and resonant enhancement, both of which rely on film thickness and substrate material. In this paper, we show that the dominant SHG contribution measured on TFLN in backreflection is the co-propagating phase-matched SHG signal and not the counter-propagating SHG portion as is the case for bulk LN samples. Moreover, lc depends on the incident pump laser wavelength (sample dispersion) but also on the numerical aperture of the focussing objective in use. These experimental findings on x- and z-cut TFLN are excellently backed up by our advanced numerical simulations.}}, author = {{Amber, Zeeshan H. and Kirbus, Benjamin and Eng, Lukas M. and Rüsing, Michael}}, issn = {{0021-8979}}, journal = {{Journal of Applied Physics}}, keywords = {{General Physics and Astronomy}}, number = {{13}}, pages = {{133102}}, publisher = {{AIP Publishing}}, title = {{{Quantifying the coherent interaction length of second-harmonic microscopy in lithium niobate confined nanostructures}}}, doi = {{10.1063/5.0058996}}, volume = {{130}}, year = {{2021}}, } @article{47977, abstract = {{Orange-colored crystals of the oxoferrate tellurate K12+6xFe6Te4−xO27 [x=0.222(4)] were synthesized in a potassium hydroxide hydroflux with a molar water–base ratio n(H2O)/n(KOH) of 1.5 starting from Fe(NO3)3 ⋅ 9H2O, TeO2 and H2O2 at about 200 °C. By using (NH4)2TeO4 instead of TeO2, a fine powder consisting of microcrystalline spheres of K12+6xFe6Te4−xO27 was obtained. K12+6xFe6Te4−xO27 crystallizes in the acentric cubic space group Iurn:x-wiley:09476539:media:chem202102464:chem202102464-math-0001 3d. [FeIIIO5] pyramids share their apical atoms in [Fe2O9] groups and two of their edges with [TeVIO6] octahedra to form an open framework that consists of two loosely connected, but not interpenetrating, chiral networks. The flexibility of the hinged oxometalate network manifests in a piezoelectric response similar to that of LiNbO3.The potassium cations are mobile in channels that run along the <111> directions and cross in cavities acting as nodes. The ion conductivity of cold-pressed pellets of ball-milled K12+6xFe6Te4−xO27 is 2.3×10^(−4) S ⋅ cm^(−1) at room temperature. Magnetization measurements and neutron diffraction indicate antiferromagnetic coupling in the [Fe2O9] groups.}}, author = {{Albrecht, Ralf and Hoelzel, Markus and Beccard, Henrik and Rüsing, Michael and Eng, Lukas and Doert, Thomas and Ruck, Michael}}, issn = {{0947-6539}}, journal = {{Chemistry – A European Journal}}, keywords = {{General Chemistry, Catalysis, Organic Chemistry}}, number = {{57}}, pages = {{14299--14306}}, publisher = {{Wiley}}, title = {{{Potassium Ion Conductivity in the Cubic Labyrinth of a Piezoelectric, Antiferromagnetic Oxoferrate(III) Tellurate(VI)}}}, doi = {{10.1002/chem.202102464}}, volume = {{27}}, year = {{2021}}, } @article{47974, abstract = {{Domain walls (DWs) in ferroelectric (FE) and multiferroic materials possess an ever-growing potential as integrated functional elements, for instance in optoelectronic nanodevices. Mandatory, however, is the profound knowledge of the local-scale electronic and optical properties, especially at DWs that are still incompletely characterized to date. Here, we quantify the refractive index of individual FE DWs in periodically-poled LiNbO3 (PPLN) single crystals. When applying polarization-sensitive optical coherence tomography (PS-OCT) at 1300 nm using circular light polarization, we are able to probe the relevant electro-optical properties close to and at the DWs, including also their ordinary and extraordinary contributions. When comparing to numerical calculations, we conclude that the DW signals recorded for ordinary and extraordinary polarization stem from an increased refractive index of at least Δn > 2·10−3 that originates from a tiny region of < 30 nm in width. PS-OCT hence provides an extremely valuable tool to decipher and quantify subtle changes of refractive index profiles for both inorganic and biomedical nanomaterial systems.}}, author = {{Golde, Jonas and Rüsing, Michael and Rix, Jan and Eng, Lukas M. and Koch, Edmund}}, issn = {{1094-4087}}, journal = {{Optics Express}}, keywords = {{Atomic and Molecular Physics, and Optics}}, number = {{21}}, publisher = {{Optica Publishing Group}}, title = {{{Quantifying the refractive index of ferroelectric domain walls in periodically poled LiNbO3 single crystals by polarization-sensitive optical coherence tomography}}}, doi = {{10.1364/oe.432810}}, volume = {{29}}, year = {{2021}}, } @article{47979, abstract = {{Broadband coherent anti-Stokes Raman scattering (B-CARS) has emerged in recent years as a promising chemosensitive high-speed imaging technique. B-CARS allows for the detection of vibrational sample properties in analogy to spontaneous Raman spectroscopy, but also makes electronic sample environments accessible due to its resonant excitation mechanism. Nevertheless, this technique has only gained interest in the biomedical field so far, whereas CARS investigations on solid-state materials are rare and concentrate on layered, two-dimensional materials such as graphene and hexagonal boron nitride . In this work, we discuss the specific properties of this technique when applied to single-crystalline samples, with respect to signal generation, phase matching, and selection rules in the model systems lithium niobate and lithium tantalate. Via polarized B-CARS measurements and subsequent phase retrieval, we validate the predicted selection rules, unequivocally assign the phonons of the A1(TO), E(TO) and A1(LO) branches to the detected CARS peaks, and address differences in spontaneous Raman spectroscopy concerning peak frequencies and scattering efficiencies. We thus establish this technique for future investigations of solid-state materials, specifically in the field of ferroelectric single crystals.}}, author = {{Hempel, Franz and Reitzig, Sven and Rüsing, Michael and Eng, Lukas M.}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, number = {{22}}, publisher = {{American Physical Society (APS)}}, title = {{{Broadband coherent anti-Stokes Raman scattering for crystalline materials}}}, doi = {{10.1103/physrevb.104.224308}}, volume = {{104}}, year = {{2021}}, } @article{48035, abstract = {{BACKGROUND: Previous studies suggest better visual-spatial processing when participants are tested in postures in which dynamic stability is challenged. The question arises if this is also true for the performance in mental body-rotation tasks (MBRT). AIM: Taking the embodied cognition approach into account, the first aim of the present study was to examine the potential influence of different demands on dynamic stability for two postures (parallel stand vs. tandem stand) on solving two versions of the MBRT, inducing either an object-based or an egocentric perspective transformation strategy. The second aim was to investigate if these different demands on dynamic stability are reflected in postural sway parameters. METHOD: Thirty participants (18 females and 12 males) were tested in the two MBRTs and in a control condition. All tasks were performed while standing on a balance beam in tandem stand and in a feet parallel position on a force plate. RESULTS: The results for response time and response error revealed effects of rotation angle and task, but no effect of posture. The analyzed Center of Pressure (CoP) data revealed a reduction of body sway during the MBRT for egocentric perspective transformations. CONCLUSION: The results indicate that participants performed better for egocentric than for object-based transformations and that the egocentric transformation leads to more postural stability than the object-based.}}, author = {{Budde, Kirsten and Jöllenbeck, Thomas and Barela, José A. and Figueiredo, Gabriella A. and Weigelt, Matthias}}, issn = {{2446-4902}}, journal = {{Brazilian Journal of Motor Behavior}}, number = {{3}}, pages = {{180--194}}, publisher = {{Brazilian Journal for Motor Behavior}}, title = {{{Mental body rotation with egocentric and object-based transformations in different postures: standing vs. balancing}}}, doi = {{10.20338/bjmb.v15i3.250}}, volume = {{15}}, year = {{2021}}, } @inproceedings{48037, author = {{Budde, Kirsten and Barela, José A and Figueiredo, Gabriella A and Weigelt, Matthias}}, booktitle = {{TeaP 2021 - Abstracts of the 63rd Conference of Experimental Psychologists.}}, editor = {{Huckauf, Anke and Baumann, Martin and Ernst, Marc and Herbert, Cornelia and Kiefer, Markus and Sauter, Marian}}, location = {{Ulm}}, pages = {{50}}, title = {{{Mental body rotation with egocentric and object-based transformations in different postures: sitting vs. standing.}}}, doi = {{10.23668/PSYCHARCHIVES.5178}}, year = {{2021}}, } @article{37822, author = {{Han, Daxin and Yang, Keke and Meschut, Gerson}}, issn = {{0924-0136}}, journal = {{Journal of Materials Processing Technology}}, keywords = {{Industrial and Manufacturing Engineering, Metals and Alloys, Computer Science Applications, Modeling and Simulation, Ceramics and Composites}}, publisher = {{Elsevier BV}}, title = {{{Mechanical joining of glass fibre reinforced polymer (GFRP) through an innovative solid self-piercing rivet}}}, doi = {{10.1016/j.jmatprotec.2021.117182}}, volume = {{296}}, year = {{2021}}, } @article{48109, abstract = {{AbstractIn this paper, we will describe an introduction to Data Science for secondary school students. We will report on the design and implementation of an introductory unit on “Data and data detectives with CODAP” in which secondary school students used the online tool CODAP to explore real and meaningful survey data on leisure time activities and media use (so‐called JIM‐PB data) in a statistical project setting as a starting point for data science. The JIM‐PB data set served as a valuable data set that offered meaningful and exciting opportunities for data exploration for secondary school students, and CODAP proved to be a valuable tool for the first explorations of this data.}}, author = {{Frischemeier, Daniel and Biehler, Rolf and Podworny, Susanne and Budde, Lea}}, issn = {{0141-982X}}, journal = {{Teaching Statistics}}, keywords = {{Education, Statistics and Probability}}, number = {{S1}}, publisher = {{Wiley}}, title = {{{A first introduction to data science education in secondary schools: Teaching and learning about data exploration with CODAP using survey data}}}, doi = {{10.1111/test.12283}}, volume = {{43}}, year = {{2021}}, } @inbook{48110, author = {{Frischemeier, Daniel and Podworny, Susanne and Biehler, Rolf}}, booktitle = {{Konzepte und Studien zur Hochschuldidaktik und Lehrerbildung Mathematik}}, isbn = {{9783662628539}}, issn = {{2197-8751}}, publisher = {{Springer Berlin Heidelberg}}, title = {{{Integration fachwissenschaftlicher und fachdidaktischer Komponenten in der Lehramtsausbildung Mathematik Grundschule am Beispiel einer Veranstaltung zur Leitidee „Daten, Häufigkeit und Wahrscheinlichkeit“}}}, doi = {{10.1007/978-3-662-62854-6_11}}, year = {{2021}}, } @inproceedings{48162, author = {{Höper, Lukas and Podworny, Susanne and Hüsing, Sven and Schulte, Carsten and Fleischer, Yannik and Biehler, Rolf and Frischemeier, Daniel and Malatyali, Hülya}}, isbn = {{978-3-88579-707-4}}, location = {{Wuppertal}}, pages = {{345--345}}, title = {{{ Zur neuen Bedeutung von Daten in Data Science und künstlicher Intelligenz}}}, year = {{2021}}, } @inproceedings{48286, author = {{Habernal, Ivan}}, booktitle = {{Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing}}, publisher = {{Association for Computational Linguistics}}, title = {{{When differential privacy meets NLP: The devil is in the detail}}}, doi = {{10.18653/v1/2021.emnlp-main.114}}, year = {{2021}}, } @inproceedings{29893, abstract = {{Phase-shift modulated full bridge converters suffer from thermal imbalances of the inverter switches. The lagging leg switches are subject to larger commutation currents compared to those of the leading leg as the transformer current reduces in the freewheeling interval. Furthermore, after this interval, the energy in the series inductance may not be large enough to achieve zero-voltage switching (ZVS) for the leading leg. Both effects result in thermal imbalances. This paper analyzes the alternating-asymmetrical phase-shift modulation to achieve balanced conduction and switching losses for all four switches while showing that this modulation is easily implemented on standard DSPs. The modulation has been implemented to LLC converters where experimental measurement results proved its effectiveness for LLC converters by reducing the temperature deviation from 6.3 K to only 0.2 K such that the peak temperature is reduced from 95 °C to 92 °C. The paper also proves that the modulation can be utilized to improve the efficiency of LLC converters operated at very low gains while simultaneously reducing the junction temperature of all four switches compared to the conventional complementary modulation. Finally, EMI implications are analyzed, which show that the modulation may be beneficial for reducing the common-mode emissions around the operating frequency.}}, author = {{Rehlaender, Philipp and Unruh, Roland and Schafmeister, Frank and Böcker, Joachim}}, booktitle = {{2021 IEEE Applied Power Electronics Conference and Exposition (APEC)}}, isbn = {{978-1-7281-8950-5}}, keywords = {{Phase-Shifted Full Bridge, Full-Bridge Converter, Phase-Shift Control, Phase-Shift Modulation, LLC Converter, Thermal Balancing}}, location = {{Phoenix, AZ, USA}}, publisher = {{IEEE}}, title = {{{Alternating Asymmetrical Phase-Shift Modulation for Full-Bridge Converters with Balanced Switching Losses to Reduce Thermal Imbalances}}}, doi = {{10.1109/apec42165.2021.9487104}}, year = {{2021}}, } @article{34827, abstract = {{ZusammenfassungZu den ersten geometrischen Begriffen, die Kinder bereits im Elementar- und Primarbereich lernen, zählen u. a. Viereck, Rechteck und Quadrat. Studien zeigen, dass Lernende bereits früh individuelle Vorstellungen, sog. individuelle Begriffskonzepte, zu diesen Begriffen aufbauen. Zwar wird die Entwicklung von Begriffsverständnis in verschiedenen mathematikdidaktischen Stufenmodellen dargestellt, diese sind jedoch generisch und beschreiben nicht explizit die Entwicklung der ersten individuellen Begriffskonzepte von Lernenden zu Viereck, Rechteck und Quadrat. Aus empirischer Sicht liegen verschiedene Studien vor, die einzelne Aspekte der individuellen Begriffskonzepte von Lernenden unterschiedlicher Altersgruppen zu diesen Begriffen ausleuchten. Um Begriffsbildungsprozesse aus empirischer Sicht detaillierter entlang der jeweils vorherrschenden individuellen Begriffskonzepte zu beschreiben, fehlen insbesondere Studien in der Grundschule, die alle vier Klassenstufen betrachten und dabei differenzierte Erkenntnisse zu verschiedenen theoretischen Indikatoren des Begriffsverständnisses liefern. Daher geht die vorliegende Studie der Frage nach, welches Verständnis der Begriffe Viereck, Rechteck und Quadrat Schülerinnen und Schüler der Jahrgangsstufen 1, 2, 3 und 4 zeigen. Dazu wurde eine Quasi-Längsschnittstudie mit N = 456 Grundschulkindern (ca. 100 pro Jahrgangsstufe) durchgeführt. Die Ergebnisse geben detaillierte Einblicke in die individuellen Begriffskonzepte der Lernenden und zeigen, dass Lernende zunehmend Eigenschaften der Figuren berücksichtigen, jedoch individuelle Begriffskonzepte über lange Zeit auch prototypisch geprägt sind. Implikationen dieser Ergebnisse für Forschung und Praxis werden diskutiert.}}, author = {{Bruns, Julia and Unterhauser, Elisabeth and Gasteiger, Hedwig}}, issn = {{0173-5322}}, journal = {{Journal für Mathematik-Didaktik}}, keywords = {{Education, General Mathematics}}, number = {{2}}, pages = {{581--623}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Geometrisches Begriffsverständnis in der Grundschule am Beispiel der Begriffe Viereck, Rechteck und Quadrat}}}, doi = {{10.1007/s13138-021-00185-4}}, volume = {{42}}, year = {{2021}}, } @inbook{48461, author = {{Jacke, Christoph}}, booktitle = {{Musik als Lebensmittel. Kulturwissenschaftlich-theologische Rationen für ein Jahr.}}, editor = {{Keuchen, Marion and Janus, Richard}}, pages = {{101--113}}, publisher = {{LIT}}, title = {{{Tocotronic - Hoffnung (2020).}}}, year = {{2021}}, } @article{32562, abstract = {{Family-Literacy-Programme stellen eine gute Möglichkeit dar, Eltern in Bildungsprozesse einzubeziehen. Am Beispiel des Programms „LIFE – Lesen in Familie erleben“ wird die Wirkung auf elterliche Unterstützung beim Lesenlernen von Erstklässler*innen unter Einbezug von Eltern- und Kinderperspektive untersucht. Sowohl direkt nach dem Programm als auch ein halbes Jahr später wirkte das Programm positiv auf verschiedene Arten der Anschlusskommunikation beim gemeinsamen Lesen.}}, author = {{Bonanati, Sabrina and Gruchel, Nicole and Kurock, Ricarda and Buhl, Heike M.}}, issn = {{0012-0731}}, journal = {{Die Deutsche Schule}}, keywords = {{Kooperation, Familie, Lesekompetenz, Längsschnittstudie, Intervention}}, number = {{3}}, pages = {{282--301}}, publisher = {{Waxmann}}, title = {{{Teilhabe von Eltern an schulischem Lernen mit Family-Literacy-Programmen. Langzeiteffekte von „LIFE – Lesen in Familie erleben“ auf die elterliche Unterstützung beim Lesenlernen}}}, doi = {{10.31244/dds.2021.03.04}}, volume = {{113}}, year = {{2021}}, } @inbook{43412, author = {{Limpinsel, Inga and Engemann, Mario and Neuberger, Olga and Serova, Katja and Aßmann, Sandra}}, booktitle = {{Kooperation - Koordination - Kollegialität. Befunde und Diskurse zum (multi-)professionellen Zusammenwirken pädagogischer Akteur*innen an Schulen}}, editor = {{Kunze, Katharina and Petersen, Dorthe and Bellenberg, Gabriele and Fabel-Lamla, Melanie and Hinzke, Jan-Hendrik and Moldenhauer, Anna and Peukert, Lena and Reintjes, Christian and te Poel, Kathrin}}, pages = {{227--246}}, publisher = {{Verlag Julius Klinkhardt}}, title = {{{Schule und außerschulische Bildungspartner an der Schnittstelle von formalen und non-formalen Bildungsprozessen - Empirische Befunde zur Kooperation und professionellen Handlungskompetenz}}}, year = {{2021}}, } @inbook{43414, author = {{Engemann, Mario and Herzig, Bardo}}, booktitle = {{Fachliche Bildung und digitale Transformation - Fachdidaktische Forschung und Diskurse. Fachtagung der Gesellschaft für Fachdidaktik 2020}}, editor = {{Maurer, Christian and Rincke, Karsten and Hemmer, Michael}}, pages = {{185--188}}, publisher = {{Universität Regensburg}}, title = {{{Lehrerkooperation und Digitalisierung - Gestaltung digital-kooperativer Arbeitsbeziehungen von Lehrkräften und ReferendarInnen am Beispiel des Schulfachs Pädagogik}}}, year = {{2021}}, } @inproceedings{43415, author = {{Engemann, Mario and Herzig, Bardo}}, location = {{Universität Osnbabrück}}, title = {{{Lehrerkooperation vor dem Hintergrund der Digitalisierung: Eine Untersuchung innerhalb von Fachkollegien im gymnasialen Schulfach Pädagogik}}}, year = {{2021}}, } @article{48513, abstract = {{Evaluators’ fit assessments are not only influenced by applicants’ qualities, but also by stereotypes, especially in recruitment for high‐status jobs in male‐dominated fields. The unidimensional agentic stereotype of these work contexts signals agentic job and organizational requirements (stereotypically male qualities such as achievement orientation), although the actual requirements usually also include communality (stereotypically female qualities such as interpersonal skills). In five experiments, we investigate the relevance of perceived applicant agency for perceived applicant fit, the influence of recruitment material, contextual differences, and the role of applicant gender. Our findings indicate that perceived applicant agency drives perceived person‐job and person‐organization fit in strictly male stereotyped work contexts, regardless of gender, and agentic recruitment material enhances this effect. Contrasting different contexts (high‐ with low‐status jobs and a male‐dominated with a gender‐balanced and female‐dominated field) revealed that the relevance of perceived agency increases with perceived job status, and the relevance of perceived communality decreases with the expected share of men. Although women were perceived as highly agentic in strictly male stereotyped work contexts, their need to be perceived as agentic also was higher than for men, due to the perceived lack of fit between women and high‐status jobs.}}, author = {{Dutz, Regina and Hubner-Benz, Sylvia and Peus, Claudia}}, issn = {{0031-5826}}, journal = {{Personnel Psychology}}, keywords = {{Organizational Behavior and Human Resource Management, Applied Psychology}}, number = {{2}}, pages = {{441--483}}, publisher = {{Wiley}}, title = {{{When agency “fits” regardless of gender: Perceptions of applicant fit when job and organization signal male stereotypes}}}, doi = {{10.1111/peps.12470}}, volume = {{75}}, year = {{2021}}, } @article{48514, abstract = {{This paper introduces narratives in entrepreneurial ecosystems as drivers of effectuation vs. causation. Drawing on 43 interviews with successful players in Silicon Valley, Munich, and Singapore, we found ecosystem-specific narratives indicate what is common, appropriate, and successful in each ecosystem, and these narratives encourage either effectuation or causation. Our findings indicate that the narratives in the ecosystem in Silicon Valley facilitate effectuation, in Munich causation, and in Singapore a cautious balance of both. Our research suggests that narratives can explain mechanisms how ecosystems influence entrepreneurship: the national culture, market characteristics, available resources, and networks in an ecosystem spark ecosystem-specific narratives, which in turn shape tendencies towards effectuation and causation. Thereby, we introduce a new ecosystem-focused perspective on predictors of effectuation and causation.}}, author = {{Hubner-Benz, Sylvia and Most, Fabian and Wirtz, Jochen and Auer, Christine}}, issn = {{0921-898X}}, journal = {{Small Business Economics}}, keywords = {{Economics and Econometrics, General Business, Management and Accounting}}, number = {{1}}, pages = {{211--242}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Narratives in entrepreneurial ecosystems: drivers of effectuation versus causation}}}, doi = {{10.1007/s11187-021-00531-3}}, volume = {{59}}, year = {{2021}}, } @article{41094, author = {{Schroeter-Wittke, Harald}}, issn = {{1616-8925}}, journal = {{Magazin für Theologie und Ästhetik. (https://www.theomag.de/129/hsw22.pdf)}}, number = {{129}}, title = {{{Weder - Noch. Was mich theologisch prägt}}}, year = {{2021}}, } @article{45382, author = {{Prediger, Susanne and Dröse, Jennifer}}, journal = {{Lernen und Lernstörungen, 10(2)}}, title = {{{Fehlerbearbeitung bei mathematischen Textaufgaben – Sprachliche und strategische Fehlerursachen und ihre Bearbeitung}}}, doi = {{doi.org/10.1024/2235-0977/a000330}}, year = {{2021}}, } @misc{48630, author = {{Kruse, Stephan and Scheytt, J. Christoph}}, title = {{{System mit optischer Trägerverteilung}}}, year = {{2021}}, } @misc{48629, author = {{Kruse, Stephan and Scheytt, J. Christoph}}, title = {{{Elektrooptischer Regelkreis}}}, year = {{2021}}, } @inproceedings{43417, author = {{Engemann, Mario and Gather, Katharina and Martin, Alexander}}, location = {{Universität Osnabrück}}, title = {{{Fälle als Reflexionsanlass im Unterricht: Theoretische und empirische Zugänge zur Fallarbeit als Methode im Schulfach Erziehungswissenschaft}}}, year = {{2021}}, } @article{48699, abstract = {{AbstractThe present study examines if the neural signature of information processing in mental rotation tasks is moderated by stimulus characteristics (e.g., body‐related vs. non‐body‐related stimuli). In the present experiment, stimulus sets of human figures (back view; left vs. right arm abduction) and alphanumeric characters (‘R’; normal vs. mirrored view) were scrutinized with event‐related potentials (ERPs) in the electroencephalography (EEG). Participants had to judge parity between an upright (0° orientation) and a comparison stimulus (stimulus disparity; 0°, 45°, 90°, 135° or 180°). There was a main effect of stimulus disparity for the behavioural (response time and error rates), as well as for the neural data (rotation‐related negativity, RRN). The interaction of stimulus disparity and stimulus type was significant for the RRN, but not for the response time. Lower RRN amplitudes for letters indicate a more pronounced use of alternative processes (e.g., memory retrieval), which seems to be reflected in higher N350 amplitudes. Moreover, the increase of the RRN amplitude and the increase in response time as a function of disparity were positively correlated. Task differences were evident for several ERP components (i.e., N150, P150 and N250), being independent of disparity, which might reflect differences in early and late object cognition prior to the mental rotation process itself. This might be associated with the task‐dependent activation of embodied cognition processes in mental rotation tasks.}}, author = {{Krause, Daniel and Richert, Benjamin and Weigelt, Matthias}}, issn = {{0953-816X}}, journal = {{European Journal of Neuroscience}}, keywords = {{General Neuroscience}}, number = {{4}}, pages = {{5384--5403}}, publisher = {{Wiley}}, title = {{{Neurophysiology of embodied mental rotation: Event‐related potentials in a mental rotation task with human bodies as compared to alphanumeric stimuli}}}, doi = {{10.1111/ejn.15383}}, volume = {{54}}, year = {{2021}}, } @article{48701, author = {{Margraf, Linda and Krause, Daniel and Weigelt, Matthias}}, issn = {{0306-4522}}, journal = {{Neuroscience}}, keywords = {{General Neuroscience}}, pages = {{20--36}}, publisher = {{Elsevier BV}}, title = {{{Valence-dependent neural correlates of augmented feedback processing in extensive motor sequence learning – Part II: Predictive value of event-related potentials for behavioral adaptation and learning}}}, doi = {{10.1016/j.neuroscience.2021.04.018}}, volume = {{486}}, year = {{2021}}, } @article{48698, author = {{Friehs, Maximilian A. and Whelan, Eric and Güldenpenning, Iris and Krause, Daniel and Weigelt, Matthias}}, issn = {{1469-0292}}, journal = {{Psychology of Sport and Exercise}}, keywords = {{Applied Psychology}}, publisher = {{Elsevier BV}}, title = {{{Stimulating performance: A scoping review on transcranial electrical stimulation effects on olympic sports}}}, doi = {{10.1016/j.psychsport.2021.102130}}, volume = {{59}}, year = {{2021}}, } @article{48700, author = {{Margraf, Linda and Krause, Daniel and Weigelt, Matthias}}, issn = {{0306-4522}}, journal = {{Neuroscience}}, keywords = {{General Neuroscience}}, pages = {{4--19}}, publisher = {{Elsevier BV}}, title = {{{Valence-dependent Neural Correlates of Augmented Feedback Processing in Extensive Motor Sequence Learning – Part I: Practice-related Changes of Feedback Processing}}}, doi = {{10.1016/j.neuroscience.2021.04.016}}, volume = {{486}}, year = {{2021}}, } @inproceedings{27998, author = {{Wehde, Janis and Bloh, Bea}}, location = {{Mainz}}, title = {{{Die Förderung demokratischer Grundhaltungen als Teil professioneller Kompetenz angehender Lehrpersonen: Darstellung eines Forschungsvorhabens}}}, year = {{2021}}, } @article{28684, author = {{Bloh, Bea and Wehde, Janis}}, journal = {{Lernende Schule}}, number = {{96}}, pages = {{27--30}}, title = {{{Salutogenes Leitungshandeln. Ein Ansatz zur Gesundheitsförderung und Qualitätsentwicklung in der Schule.}}}, year = {{2021}}, } @phdthesis{48756, abstract = {{Die Zeitzeug*innenbefragung gilt als kindgemäßer Zugang zur Alltags- und Zeitgeschichte. Sie charakterisiert sich sowohl als geschichtswissenschaftliche Forschungsmethode als auch Unterrichtsmethode zur Erstellung, Bearbeitung und Interpretation historischer Quellen mittels Erinnerungsinterviews zu vergangenen Erlebnissen und Erfahrungen (vgl. Michalik 2017, Schreiber 2009). Trotz einer bildungspolitischen Empfehlung der Methode der Zeitzeug*innenbefragung ab dem Anfangsunterricht des Sachunterrichts (vgl. u.a. Niedersächsisches Kultusministerium 2017), standen bislang im (inter-)nationalen Raum Studien, die die Zeitzeug*innenbefragung als didaktisches Arrangement historischen Lernens im Sachunterricht untersuchen sowie die Kinderperspektive auf die Methode der Zeitzeug*innenbefragung erfassen, aus. Entsprechend fokussiert die vorliegende, explorative und qualitativ angelegte Studie die Präkonzepte von Grundschulkindern zur Methode der Zeitzeug*innenbefragung. Mittels leitfadengestützter teilstandardisierter Einzelinterviews wurden die Präkonzepte zur Methode sowie zum Wissenschaftsverständnis bezüglich Zeitzeug*innen als historische Quelle rekonstruiert (vgl. Fuhs 2012, Helfferich 2011). Das Sample setzte sich aus Grundschulkindern der zweiten und vierten Klasse zusammen. Zur Bearbeitung und Auswertung des Datenmaterials diente eine in Anlehnung an die Lehr- und Lernforschung adaptierte Vorgehensweise der Qualitativen Inhaltsanalyse, die entsprechend modifiziert und erweitert wurde (vgl. Kuckartz 2018). Die Befunde der Studie zeigen differenzierte Präkonzepte der interviewten Zweit- und Viertklässler*innen zum Kontext der Methode der Zeitzeug*innenbefragung auf. Im Weiteren verweisen die Befunde darauf, dass die Zeitzeug*innenbefragung als Unterrichtsmethode ihre Legitimation im historischen Lernen mit Beginn des Anfangsunterrichts in der Grundschule hat.}}, author = {{Diederich, Julia}}, keywords = {{Präkonzepte, Zeitzeugenbefragung, Historisches Lernen, Sachunterricht, qualitative Forschung}}, pages = {{369}}, title = {{{Präkonzepte von Grundschulkindern zur Zeitzeug*innenbefragung – Eine empirische Untersuchung zu Kompetenzen historischen Denkens}}}, doi = {{http://dx.doi.org/10.17619/UNIPB/1-1137}}, year = {{2021}}, } @inbook{48773, author = {{Diederich, Julia}}, booktitle = {{Historisches Lernen in der Primarstufe. Standpunkte – Herausforderungen – Perspektiven}}, editor = {{Buchberger, Wolfgang and Kühberger, Christoph}}, isbn = {{978-3-7065-6012-2}}, pages = {{267--281}}, publisher = {{Studienverlag}}, title = {{{Die Zeitzeugenbefragung aus der Sicht von Grundschulkindern}}}, volume = {{13}}, year = {{2021}}, } @inbook{48810, author = {{Luft, Sebastian}}, booktitle = {{Simmel-Handbuch}}, editor = {{Hartung, G}}, pages = {{247--256}}, publisher = {{Metzler}}, title = {{{Simmels Abhandlungen zu Kant}}}, year = {{2021}}, } @book{48906, editor = {{Luft, Sebastian and Ferrari, Massimo}}, issn = {{2626-8329}}, keywords = {{General Medicine}}, publisher = {{Walter de Gruyter GmbH}}, title = {{{Cassirer’s Children, Special Topics Issue}}}, doi = {{10.1515/jtph-2021-0010}}, volume = {{2(1)}}, year = {{2021}}, } @book{48907, editor = {{Luft, Sebastian and Bohr, Jörn}}, pages = {{598}}, publisher = {{Felix Meiner Verlag}}, title = {{{ Wilhelm Windelband. Präludien}}}, year = {{2021}}, } @inproceedings{26770, abstract = {{Automatic transcription of meetings requires handling of overlapped speech, which calls for continuous speech separation (CSS) systems. The uPIT criterion was proposed for utterance-level separation with neural networks and introduces the constraint that the total number of speakers must not exceed the number of output channels. When processing meeting-like data in a segment-wise manner, i.e., by separating overlapping segments independently and stitching adjacent segments to continuous output streams, this constraint has to be fulfilled for any segment. In this contribution, we show that this constraint can be significantly relaxed. We propose a novel graph-based PIT criterion, which casts the assignment of utterances to output channels in a graph coloring problem. It only requires that the number of concurrently active speakers must not exceed the number of output channels. As a consequence, the system can process an arbitrary number of speakers and arbitrarily long segments and thus can handle more diverse scenarios. Further, the stitching algorithm for obtaining a consistent output order in neighboring segments is of less importance and can even be eliminated completely, not the least reducing the computational effort. Experiments on meeting-style WSJ data show improvements in recognition performance over using the uPIT criterion. }}, author = {{von Neumann, Thilo and Kinoshita, Keisuke and Boeddeker, Christoph and Delcroix, Marc and Haeb-Umbach, Reinhold}}, booktitle = {{Interspeech 2021}}, keywords = {{Continuous speech separation, automatic speech recognition, overlapped speech, permutation invariant training}}, title = {{{Graph-PIT: Generalized Permutation Invariant Training for Continuous Separation of Arbitrary Numbers of Speakers}}}, doi = {{10.21437/interspeech.2021-1177}}, year = {{2021}}, } @inproceedings{29173, author = {{von Neumann, Thilo and Boeddeker, Christoph and Kinoshita, Keisuke and Delcroix, Marc and Haeb-Umbach, Reinhold}}, booktitle = {{Speech Communication; 14th ITG Conference}}, location = {{Kiel}}, title = {{{Speeding Up Permutation Invariant Training for Source Separation}}}, year = {{2021}}, } @article{24037, abstract = {{AbstractInnovation projects are characterized by numerous uncertainties. Typical concepts in development management like the application of safety coefficients imply limitations of the solution space. In contrast, explicit handling of uncertainties can support engineers in understanding the problem space and in utilising the full potential of the design space along iterative product development steps. As a result from literature analysis, there is a lack of a support for product development that addresses the specific problem of uncertainty and risk in the context of requirement changes. The aim of the contribution at hand is to enhance the efficient development of complex interdisciplinary systems by enabling uncertainty handling in requirements change management. Based on a classification of uncertainty types resulting in a descriptive model, risk management measures are identified to support requirements engineers. The proposed method includes identification & modelling, analysis, treatment and monitoring of risks and counter-measures. By applying this method, engineers are supported in adopting agile approaches and enabling flexible Requirements Engineering.}}, author = {{Gräßler, Iris and Pottebaum, Jens and Oleff, Christian and Preuß, Daniel}}, issn = {{2732-527X}}, journal = {{Proceedings of the Design Society}}, location = {{Gothenburg}}, pages = {{1687--1696}}, title = {{{Handling of explicit Uncertainty in Requirements Change Management}}}, doi = {{10.1017/pds.2021.430}}, volume = {{1}}, year = {{2021}}, } @inproceedings{23401, author = {{Gürtler, Marius and Mandischer, Nils and Hüsing, Mathias and Corves, Burkhard and Pottebaum, Jens and Roesmann, Daniel and Gräßler, Iris}}, booktitle = {{7. IFToMM D-A-CH Konferenz 2021; 18. - 19. Feb. 2021 IFToMM D-A-CH}}, location = {{Universität Duisburg-Essen}}, publisher = {{DuEPublico2 Duisburg-Essen Publications online}}, title = {{{Ein reaktiver Modellierungsansatz für Mensch-Roboter-Kollaboration in Rettungs- und Brandszenarien der Feuerwehr}}}, year = {{2021}}, } @inproceedings{25534, author = {{Gräßler, Iris and Pottebaum, Jens and Roesmann, Daniel and Mandischer, Nils and Gürtler, Marius and Hüsing, Mathias and Corves, Burkhard}}, booktitle = {{Mensch und Computer 2021 - Workshopband}}, editor = {{Wienrich, C. and Wintersberger, P. and Weyers, B.}}, title = {{{Fähigkeitsorientierte Aufgabenzuordnung für die Mensch-Roboter-Kollaboration in sicherheitskritischen Einsatzsituationen}}}, doi = {{10.18420/muc2021-mci-ws08-376}}, year = {{2021}}, } @inproceedings{23511, author = {{Gräßler, Iris and Roesmann, Daniel and Pottebaum, Jens}}, booktitle = {{14th CIRP Conference on Intelligent Computation in Manufacturing Engineering; 15. - 17. Jul. 2020}}, pages = {{57--62}}, publisher = {{Elsevier B. V.}}, title = {{{Model based Integration of Human Characteristics in Production Systems: A Literature Survey}}}, doi = {{https://doi.org/10.1016/j.procir.2021.03.010}}, year = {{2021}}, } @article{23390, author = {{Gräßler, Iris and Pottebaum, Jens}}, journal = {{ Applied Sciences}}, pages = {{4516}}, title = {{{Generic Product Lifecycle Model: A Holistic and Adaptable Approach for Multi-Disciplinary Product-Service Systems}}}, doi = {{10.3390/app11104516}}, volume = {{11}}, year = {{2021}}, } @inbook{48953, author = {{Schulze, Max}}, booktitle = {{Produktive Bildstörung: Sigmar Polke und aktuelle künstlerische Positionen}}, isbn = {{9783954764259}}, keywords = {{Sigmar Polke, Bildstörung, Camouflage, Wandfarbe}}, pages = {{86--89}}, publisher = {{DISTANZ Verlag}}, title = {{{Couleur Locale}}}, year = {{2021}}, } @book{36450, author = {{Werbick, Regina and Höink, Dominik and Memering, Robert}}, publisher = {{LibreCat University}}, title = {{{Friedrich Schneider, Christus das Kind. Oratorium in drei Teilen}}}, doi = {{10.17879/29079569785}}, year = {{2021}}, }