@article{29246, abstract = {{Openness in science and education is increasing in importance within the digital knowledge society. So far, less attention has been paid to teaching Open Science in bachelor’s degrees or in qualitative methods. Therefore, the aim of this article is to use a seminar example to explore what Open Science practices can be taught in qualitative research and how digital tools can be involved. The seminar focused on the following practices: Open data practices, the practice of using the free and open source tool “Collaborative online Interpretation, the practice of participating, cooperating, collaborating and contributing through participatory technologies and in social (based) networks. To learn Open Science practices, the students were involved in a qualitative research project about “Use of digital technologies for the study and habitus of students”. The study shows the practices of Open Data are easy to teach, whereas the use of free and open source tools and participatory technologies for collaboration, participation, cooperation and contribution is more difficult. In addition, a cultural shift would have to take place within German universities to promote Open Science practices in general.}}, author = {{Steinhardt, Isabel}}, issn = {{0167-8329}}, journal = {{Education for Information}}, keywords = {{Open Science, Open Education Practices, Library and Information Sciences, Education, Information Systems}}, number = {{3}}, pages = {{263--279}}, publisher = {{IOS Press}}, title = {{{Learning Open Science by doing Open Science. A reflection of a qualitative research project-based seminar}}}, doi = {{10.3233/efi-190308}}, volume = {{36}}, year = {{2020}}, } @article{33389, abstract = {{Abstract Purpose Space flight and bed rest (BR) lead to a rapid decline in exercise capacity. Whey protein plus potassium bicarbonate diet-supplementation (NUTR) could attenuate this effect by improving oxidative metabolism. We evaluated the impact of 21-day BR and NUTR on fatigue resistance of plantar flexor muscles (PF) during repeated shortening contractions, and whether any change was related to altered energy metabolism and muscle oxygenation. Methods Ten healthy men received a standardized isocaloric diet with (n = 5) or without (n = 5) NUTR. Eight bouts of 24 concentric plantar flexions (30 s each bout) with 20 s rest between bouts were employed. PF muscle size was assessed by means of peripheral quantitative computed tomography. PF muscle volume was assessed with magnetic resonance imaging. PF muscle force, contraction velocity, power and surface electromyogram signals were recorded during each contraction, as well as energy metabolism (31P nuclear magnetic resonance spectroscopy) and oxygenation (near-infrared spectroscopy). Cardiopulmonary parameters were measured during an incremental cycle exercise test. Results BR caused 10–15% loss of PF volume that was partly recovered 3 days after re-ambulation, as a consequence of fluid redistribution. Unexpectedly, PF fatigue resistance was not affected by BR or NUTR. BR induced a shift in muscle metabolism toward glycolysis and some signs of impaired muscle oxygen extraction. NUTR did not attenuate the BR-induced-shift in energy metabolism. Conclusions Twenty-one days’ BR did not impair PF fatigue resistance, but the shift to glycolytic metabolism and indications of impaired oxygen extraction may be early signs of developing reduced muscle fatigue resistance. }}, author = {{Bosutti, Alessandra and Mulder, Edwin and Zange, Jochen and Bühlmeier, Judith and Ganse, Bergita and Degens, Hans}}, issn = {{1439-6319}}, journal = {{European Journal of Applied Physiology}}, keywords = {{Physiology (medical), Public Health, Environmental and Occupational Health, Orthopedics and Sports Medicine, General Medicine, Public Health, Environmental and Occupational Health, Physiology}}, number = {{5}}, pages = {{969--983}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Effects of 21 days of bed rest and whey protein supplementation on plantar flexor muscle fatigue resistance during repeated shortening contractions}}}, doi = {{10.1007/s00421-020-04333-5}}, volume = {{120}}, year = {{2020}}, } @article{33435, abstract = {{ Zusammenfassung. Die Relevanz von Peers für die Entwicklung von Jugendlichen konnte in verschiedenen Studien bereits bestätigt werden. Im Unterricht zeigt sich dies u.a. durch höhere situative Motivation und Freude sowie geringerem Stressempfinden während sozialer Interaktionen mit Mitschülerinnen und -schülern verglichen mit Einzelarbeitssituationen. Allerdings stellte sich auch heraus, dass Jugendliche mit Verhaltensauffälligkeiten Schwierigkeiten im Knüpfen und Aufrechterhalten von sozialen Kontakten und Freundschaften haben. Während in bisherigen Studien Verhalten als dichotome Variable untersucht wurde, wird hier ein dimensionaler, personzentrierter Ansatz zur Identifizierung von Gruppen mit heterogenen Verhaltensweisen verfolgt. Ziel dieses Beitrags ist daher die Untersuchung von Effekten sozialer Interaktionen im Unterricht auf das emotionale Erleben von Jugendlichen mit heterogenen Verhaltensweisen. Zudem wird ein möglicher Moderationseffekt der Klassenkomposition in Bezug auf das Verhalten überprüft. Hierzu wurden N = 719 Schülerinnen und Schülern der fünften und sechsten Jahrgangsstufe unter Verwendung der experience sampling method zu zwei bis drei Messzeitpunkten pro Tag an fünf aufeinanderfolgenden Schultagen zu ihrem aktuellen emotionalen Erleben und ihrem sozialen Kontext befragt. Insgesamt lagen 8870 „Momentaufnahmen“ des emotionalen Erlebens und von Unterrichtssituationen vor. Auf der Grundlage von Verhaltenseinschätzungen durch Lehrpersonen wurden mittels latenter Profilanalysen drei Profiltypen innerhalb der Schülerschaft identifiziert: Jugendliche mit adaptivem, internalisierendem und externalisierendem Verhalten. Ergebnisse von Multilevel-Strukturgleichungsmodellen zeigen, dass Jugendliche in Unterrichtssituationen, in denen sie mit ihren Peers interagieren (z.B. in Partner- oder Gruppenarbeiten), motivierter und weniger gestresst sind als in Einzelsituationen. Für Jugendliche mit externalisierendem oder internalisierendem Verhalten ist dieser Effekt stärker ausgeprägt. Die geringfügigen, jedoch nicht signifikanten differenziellen moderierenden Effekte verweisen zudem darauf, dass der Zusammenhang des emotionalen Erlebens und der Peerinteraktionen für Jugendliche nicht durch ihr Klassenumfeld in Bezug auf prosoziales oder problematisches Verhalten moderiert wird. Die Ergebnisse werden sowohl methodisch als auch inhaltlich diskutiert, unter anderem in Bezug auf die Frage, ob und inwiefern Peers Quellen aktueller Motivation im Unterricht darstellen. }}, author = {{Knickenberg, Margarita and Zurbriggen, Carmen and Schmidt, Philipp}}, issn = {{1010-0652}}, journal = {{Zeitschrift für Pädagogische Psychologie}}, keywords = {{Developmental and Educational Psychology}}, pages = {{1--15}}, publisher = {{Hogrefe Publishing Group}}, title = {{{Peers als Quelle aktueller Motivation?}}}, doi = {{10.1024/1010-0652/a000292}}, year = {{2020}}, } @article{33646, author = {{Majumdar, I. and Sahoo, S.K. and Parvan, V. and Mirhosseini, Hossein and Chacko, B. and Wang, Y. and Greiner, D. and Kühne, Thomas and Schlatmann, R. and Lauermann, I.}}, issn = {{0169-4332}}, journal = {{Applied Surface Science}}, keywords = {{Surfaces, Coatings and Films, Condensed Matter Physics, Surfaces and Interfaces, General Physics and Astronomy, General Chemistry}}, publisher = {{Elsevier BV}}, title = {{{Effects of KF and RbF treatments on Cu(In,Ga)Se2-based solar cells: A combined photoelectron spectroscopy and DFT study}}}, doi = {{10.1016/j.apsusc.2020.148085}}, volume = {{538}}, year = {{2020}}, } @article{35328, author = {{Wortmann, Martin and Frese, Natalie and Keil, Waldemar and Brikmann, Johannes and Biedinger, Jan and Brockhagen, Bennet and Reiss, Günter and Schmidt, Claudia and Gölzhäuser, Armin and Moritzer, Elmar and Hüsgen, Bruno}}, issn = {{2637-6105}}, journal = {{ACS Applied Polymer Materials}}, keywords = {{Organic Chemistry, Polymers and Plastics, Process Chemistry and Technology}}, number = {{11}}, pages = {{4719--4732}}, publisher = {{American Chemical Society (ACS)}}, title = {{{The Deterioration Mechanism of Silicone Molds in Polyurethane Vacuum Casting}}}, doi = {{10.1021/acsapm.0c00744}}, volume = {{2}}, year = {{2020}}, } @article{35580, author = {{Schulze Darup, Moritz}}, issn = {{1049-8923}}, journal = {{International Journal of Robust and Nonlinear Control}}, keywords = {{Electrical and Electronic Engineering, Industrial and Manufacturing Engineering, Mechanical Engineering, Aerospace Engineering, Biomedical Engineering, General Chemical Engineering, Control and Systems Engineering}}, number = {{11}}, pages = {{4168--4187}}, publisher = {{Wiley}}, title = {{{Encrypted polynomial control based on tailored two‐party computation}}}, doi = {{10.1002/rnc.5003}}, volume = {{30}}, year = {{2020}}, } @article{35585, author = {{Lu, Jingyi and Leong, Alex S. and Quevedo, Daniel E.}}, issn = {{1049-8923}}, journal = {{International Journal of Robust and Nonlinear Control}}, keywords = {{Electrical and Electronic Engineering, Industrial and Manufacturing Engineering, Mechanical Engineering, Aerospace Engineering, Biomedical Engineering, General Chemical Engineering, Control and Systems Engineering}}, number = {{11}}, pages = {{4205--4224}}, publisher = {{Wiley}}, title = {{{Optimal event‐triggered transmission scheduling for privacy‐preserving wireless state estimation}}}, doi = {{10.1002/rnc.4910}}, volume = {{30}}, year = {{2020}}, } @article{35723, abstract = {{The development of renewable energies and smart mobility has profoundly impacted the future of the distribution grid. An increasing bidirectional energy flow stresses the assets of the distribution grid, especially medium voltage switchgear. This calls for improved maintenance strategies to prevent critical failures. Predictive maintenance, a maintenance strategy relying on current condition data of assets, serves as a guideline. Novel sensors covering thermal, mechanical, and partial discharge aspects of switchgear, enable continuous condition monitoring of some of the most critical assets of the distribution grid. Combined with machine learning algorithms, the demands put on the distribution grid by the energy and mobility revolutions can be handled. In this paper, we review the current state-of-the-art of all aspects of condition monitoring for medium voltage switchgear. Furthermore, we present an approach to develop a predictive maintenance system based on novel sensors and machine learning. We show how the existing medium voltage grid infrastructure can adapt these new needs on an economic scale.}}, author = {{Hoffmann, Martin W. and Wildermuth, Stephan and Gitzel, Ralf and Boyaci, Aydin and Gebhardt, Jörg and Kaul, Holger and Amihai, Ido and Forg, Bodo and Suriyah, Michael and Leibfried, Thomas and Stich, Volker and Hicking, Jan and Bremer, Martin and Kaminski, Lars and Beverungen, Daniel and zur Heiden, Philipp and Tornede, Tanja}}, issn = {{1424-8220}}, journal = {{Sensors}}, keywords = {{Electrical and Electronic Engineering, Biochemistry, Instrumentation, Atomic and Molecular Physics, and Optics, Analytical Chemistry}}, number = {{7}}, publisher = {{MDPI AG}}, title = {{{Integration of Novel Sensors and Machine Learning for Predictive Maintenance in Medium Voltage Switchgear to Enable the Energy and Mobility Revolutions}}}, doi = {{10.3390/s20072099}}, volume = {{20}}, year = {{2020}}, } @article{34093, author = {{Riedl, Thomas and Kunnathully, V. S. and Trapp, A. and Langer, T. and Reuter, Dirk and Lindner, Jörg}}, issn = {{2475-9953}}, journal = {{Physical Review Materials}}, keywords = {{Physics and Astronomy (miscellaneous), General Materials Science}}, number = {{1}}, publisher = {{American Physical Society (APS)}}, title = {{{Strain-driven InAs island growth on top of GaAs(111) nanopillars}}}, doi = {{10.1103/physrevmaterials.4.014602}}, volume = {{4}}, year = {{2020}}, } @article{34088, author = {{Bürger, Julius and Riedl, Thomas and Lindner, Jörg}}, issn = {{0304-3991}}, journal = {{Ultramicroscopy}}, keywords = {{Instrumentation, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials}}, publisher = {{Elsevier BV}}, title = {{{Influence of lens aberrations, specimen thickness and tilt on differential phase contrast STEM images}}}, doi = {{10.1016/j.ultramic.2020.113118}}, volume = {{219}}, year = {{2020}}, } @inbook{35836, abstract = {{Digitalisierung ist derzeit ein viel diskutiertes Thema. Mit ihr werden derart tief grei- fende Veränderungen der Gesellschaft und Arbeitswelt erwartet, dass sie häufig als digitale Revolution bezeichnet wird. Gleichzeitig wirft die Auseinandersetzung mit diesen antizipierten Veränderungen viele noch unbeantwortete Fragen auf. Diese umfassen unter anderem Überlegungen hinsichtlich des Substitutionspotenzials menschlicher Arbeit durch die Digitalisierung, die Frage nach der Ausgestaltung der Rolle des Menschen in der Industrie 4.0 und schließlich Erwägungen in Bezug auf die Vorbereitung und Begleitung von Beschäftigten in der digitalen Transformation. Der vorliegende Beitrag gibt Aufschluss über die Dimensionen der Digitalisierung und die derzeit diskutierten Entwicklungslinien; er befasst sich weiterhin mit den sich daraus ergebenden Herausforderungen und Bedeutungen für die industrielle Arbeit und die Beschäftigten. Abschließend werden daraus abzuleitende Implikationen für die berufliche und allgemeine Bildung diskutiert.}}, author = {{Berisha-Gawlowski, Angelina and Caruso, Carina and Goller, Michael and Harteis, Christian}}, booktitle = {{Digitalisierung am Übergang Schule Beruf Ansätze und Perspektiven in Arbeitsdomänen und beruflicher Förderung}}, editor = {{Heisler, Dietmar and Meier, Jörg}}, isbn = {{978-3-7639-6158-0}}, keywords = {{Digitalisierung, Industrie 4.0, Arbeit 4.0, berufliche Aus- und Weiterbildung, allgemeine Bildung / digitalization, industry 4.0, work 4.0, vocational education and training, general education}}, pages = {{33–51}}, publisher = {{wbv}}, title = {{{Auswirkungen der Digitalisierung industrieller Arbeit auf die berufliche und allgemeine Bildung}}}, doi = {{10.3278/6004725w}}, volume = {{56}}, year = {{2020}}, } @inproceedings{35660, abstract = {{Effective customer loyalty programs are essential for every company. Small and medium sized brick-and- mortar stores, such as bakeries, butcher and flower shops, often share a common overarching loyalty program, organized by a third-party provider. Furthermore, these small shops have limited resources and often cannot afford complex BI tools. Out of these reasons we investigated how traditional brick-and- mortar stores can benefit from an expansion of service functionalities of a loyalty card provider. To answer this question, we cooperated with a cross-industry customer loyalty program in a polycentric region. The loyalty program was transformed from simple card-based solution to a mobile app for customers and a web- application for shop owners. The new solution offers additional BI services for performing data analytics and strengthening the position of brick-and-mortar stores. Participating shops can work together in order to increase sales and align marketing campaigns. Therefore, shopping data from 12 years, 55 shops, and 19,000 customers was analyzed.}}, author = {{Kucklick, Jan-Peter and Kamm, Michael Reiner and Schneider, Johannes and vom Brocke, Jan}}, booktitle = {{Proceedings of the 53rd Hawaii International Conference on System Sciences}}, keywords = {{brick-and-mortar stores, business intelligence, case study, loyalty program}}, title = {{{Extending Loyalty Programs with BI Functionalities A Case Study for Brick-and-Mortar Stores}}}, year = {{2020}}, } @article{35662, abstract = {{While the analysis and usage of data are increasing in importance, the application of sophisticated BI solutions in small stores is limited by available technical capabilities and financial resources. This study investigates how brick-and-mortar stores can benefit from an expansion of service functionalities of a cross-industry loyalty card provider. Digitalizing the loyalty program created new opportunities, while the analysis of shopping data of 13 years, 19,000 customers, and 55 shops empowered data-based decision support.}}, author = {{Kamm, Michael Reiner and Kucklick, Jan-Peter and Schneider, Johannes and vom Brocke, Jan}}, issn = {{1058-0530}}, journal = {{Information Systems Management}}, keywords = {{Customer loyalty, case study, brick-and-mortar stores, business intelligence, loyalty programs}}, number = {{4}}, pages = {{270--286}}, publisher = {{Informa UK Limited}}, title = {{{Data mining for small shops: Empowering brick-and-mortar stores through BI functionalities of a loyalty program1}}}, doi = {{10.1080/10580530.2020.1855486}}, volume = {{38}}, year = {{2020}}, } @article{37021, author = {{Chiapello, Eve and Knoll, Lisa}}, issn = {{1387-6988}}, journal = {{Journal of Comparative Policy Analysis: Research and Practice}}, keywords = {{Public Administration, Sociology and Political Science}}, number = {{2}}, pages = {{100--115}}, publisher = {{Informa UK Limited}}, title = {{{The Welfare Conventions Approach: A Comparative Perspective on Social Impact Bonds}}}, doi = {{10.1080/13876988.2019.1695965}}, volume = {{22}}, year = {{2020}}, } @article{47958, abstract = {{High-fidelity periodic poling over long lengths is required for robust, quasi-phase-matched second-harmonic generation using the fundamental, quasi-TE polarized waveguide modes in a thin-film lithium niobate (TFLN) waveguide. Here, a shallow-etched ridge waveguide is fabricated in x-cut magnesium oxide doped TFLN and is poled accurately over 5 mm. The high fidelity of the poling is demonstrated over long lengths using a non-destructive technique of confocal scanning second-harmonic microscopy. We report a second-harmonic conversion efficiency of up to 939 %/W (length-normalized conversion efficiency 3757 %/Wcm²), measured at telecommunications wavelengths. The device demonstrates a narrow spectral linewidth (1 nm) and can be tuned precisely with a tuning characteristic of 0.1 nm/°C, over at least 40 °C without measurable loss of efficiency.}}, author = {{Zhao, Jie and Rüsing, Michael and Javid, Usman A. and Ling, Jingwei and Li, Mingxiao and Lin, Qiang and Mookherjea, Shayan}}, issn = {{1094-4087}}, journal = {{Optics Express}}, keywords = {{Atomic and Molecular Physics, and Optics}}, number = {{13}}, publisher = {{Optica Publishing Group}}, title = {{{Shallow-etched thin-film lithium niobate waveguides for highly-efficient second-harmonic generation}}}, doi = {{10.1364/oe.395545}}, volume = {{28}}, year = {{2020}}, } @article{47955, abstract = {{Quasi-phase-matched grating structures in lithium niobate waveguides with sub-micrometer periodicities will benefit the development of short-wavelength nonlinear optical devices. Here, we report on the reproducible formation of periodically poled domains in x-cut single-crystalline thin-film lithium niobate with periodicities as short as 600 nm. Shaped single-voltage poling pulses were applied to electrode structures that were fabricated by a combination of electron-beam and direct-writing laser lithography. Evidence of successful poling with good quality was obtained through second-harmonic microscopy and piezoresponse force microscopy imaging. For the sub-micrometer period structures, we observed patterns with a double periodicity formed by domain interactions and features with sizes <200 nm.}}, author = {{Zhao, Jie and Rüsing, Michael and Roeper, Matthias and Eng, Lukas M. and Mookherjea, Shayan}}, issn = {{0021-8979}}, journal = {{Journal of Applied Physics}}, keywords = {{General Physics and Astronomy}}, number = {{19}}, publisher = {{AIP Publishing}}, title = {{{Poling thin-film x-cut lithium niobate for quasi-phase matching with sub-micrometer periodicity}}}, doi = {{10.1063/1.5143266}}, volume = {{127}}, year = {{2020}}, } @article{47952, author = {{Zhao, Jie and Ma, Chaoxuan and Rüsing, Michael and Mookherjea, Shayan}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, keywords = {{General Physics and Astronomy}}, number = {{16}}, publisher = {{American Physical Society (APS)}}, title = {{{High Quality Entangled Photon Pair Generation in Periodically Poled Thin-Film Lithium Niobate Waveguides}}}, doi = {{10.1103/physrevlett.124.163603}}, volume = {{124}}, year = {{2020}}, } @article{48524, author = {{Hubner-Benz, Sylvia}}, issn = {{1742-5360}}, journal = {{International Journal of Entrepreneurial Venturing}}, keywords = {{Management of Technology and Innovation, Strategy and Management, Business and International Management}}, number = {{2}}, publisher = {{Inderscience Publishers}}, title = {{{When entrepreneurs become leaders: how entrepreneurs deal with people management}}}, doi = {{10.1504/ijev.2020.105571}}, volume = {{12}}, year = {{2020}}, } @article{48521, author = {{Rudic, Biljana and Hubner-Benz, Sylvia and Baum, Matthias}}, issn = {{2352-6734}}, journal = {{Journal of Business Venturing Insights}}, keywords = {{Management of Technology and Innovation, Business and International Management}}, publisher = {{Elsevier BV}}, title = {{{Hustlers, hipsters and hackers: Potential employees’ stereotypes of entrepreneurial leaders}}}, doi = {{10.1016/j.jbvi.2020.e00220}}, volume = {{15}}, year = {{2020}}, } @article{47919, abstract = {{AbstractWe examine whether and how political embeddedness influences financial reporting quality in China by investigating how government ownership and political connections affect Chinese listed firms’ choices of earnings management strategies. The results show that state‐owned enterprises (SOEs), and in particular, central SOEs, are more likely to substitute accrual‐based earnings management strategies with costlier but less detectable real earnings management strategies than non‐SOEs. The results also indicate that politically connected enterprises (PCEs) are more likely to employ less detectable real earnings management strategies than non‐PCEs, so much so that PCEs’ total earnings management level is higher than that of non‐PCEs.}}, author = {{Wang, Zhi and Braam, Geert and Reimsbach, Daniel and Wang, Jiaxin}}, issn = {{0810-5391}}, journal = {{Accounting & Finance}}, keywords = {{Economics, Econometrics and Finance (miscellaneous), Finance, Accounting}}, number = {{5}}, pages = {{4723--4755}}, publisher = {{Wiley}}, title = {{{Political embeddedness and firms’ choices of earnings management strategies in China}}}, doi = {{10.1111/acfi.12690}}, volume = {{60}}, year = {{2020}}, }