@inproceedings{41385, author = {{Schaper, NIclas and Festner, Dagmar and Seifert, Andreas and Watson, Christina and Hilligus, Annegret Helen}}, booktitle = {{10. Bundeskongress der Zentren für Lehrerbildung.}}, location = {{Bochum}}, title = {{{Neue Herausforderungen für Zentren für Lehrerbildung.}}}, year = {{2017}}, } @inproceedings{41383, author = {{Brauch, Nicola and Wolf, Jörgen and Seiffert, Joana and Seifert, Andreas and Rothland, Martin}}, booktitle = {{17th Biennial EARLI Conference}}, location = {{Tampere}}, title = {{{Test-Development to Assess Future History Teacher’s PCK.}}}, year = {{2017}}, } @article{34624, author = {{Alpsancar, Suzana}}, isbn = {{9783845277677}}, journal = {{Jahrbuch Technikphilosophie 2017}}, pages = {{427--444}}, publisher = {{Nomos}}, title = {{{Von der Cultura zur Option: Wie Samenbanken als Sicherungstechniken Realwerte in Optionswerte verwandeln}}}, doi = {{10.5771/9783845277677}}, year = {{2017}}, } @article{4685, abstract = {{Politicians and tax practitioners often claim that tax uncertainty negatively affects investment. In many countries, firms can request fee-based advance tax rulings (ATRs) to mitigate tax uncertainty. We analyse theoretically the circumstances under which investors request ATRs, how tax authorities should price them and how they can affect investment. We assume that tax authorities integrate investors’ reasoning into their decisions. We find that in special cases the optimal fee tax authorities should charge is prohibitively high, thus firms will refrain from requesting ATRs. However, we find that revenue-maximising tax authorities offer ATRs if the ruling enables them either to significantly reduce their tax audit costs or to increase the probability of detecting ambiguous tax issues. Under certain circumstances, ATRs may effectively foster investment and potentially benefit both the tax authorities and taxpayers. Our results provide new explanations for why taxpayers that face high levels of tax uncertainty often do not request ATRs, even when the fee is rather low. Our results also hold when the tax authority maximises social wealth instead of its revenues. Regulatory changes in ATR requirements might serve as a natural quasi-experiment for an empirical study of our predictions regarding investment decisions.}}, author = {{Diller, Markus and Kortebusch, Pia and Schneider, Georg and Sureth-Sloane, Caren}}, journal = {{European Accounting Review}}, number = {{3}}, pages = {{441--468}}, title = {{{Boon or Bane? Advance Tax Rulings as a Measure to Mitigate Tax Uncertainty and Foster Investment}}}, doi = {{10.1080/09638180.2016.1169939}}, volume = {{26}}, year = {{2017}}, } @article{41181, author = {{Schütz, Julia and Seifert, Andreas}}, journal = {{Der Pädagogische Blick}}, number = {{3}}, pages = {{173--174}}, title = {{{BMBF-Tagung: Bildungsforschung 2020: Interdisziplinäre und interinstitutionelle Po-tenziale eines Veranstaltungsformats.}}}, volume = {{25}}, year = {{2017}}, } @inproceedings{41384, author = {{Festner, Dagmar and Gröschner, Alexander and Seifert, Andreas}}, booktitle = {{2. Internationalen Kongress „Lernen in der Praxis.“}}, location = {{Bochum}}, title = {{{Kompetenzselbsteinschätzungen und bildungswissenschaftliches Wissen im Lehramtsstudium – Zeigen sich Unterschiede zwischen einem Orientierungspraktikum und dem Praxissemester?}}}, year = {{2017}}, } @inproceedings{41390, author = {{Seifert, Andreas and Schaper, Niclas and König, JOhannes}}, booktitle = {{Vortrag auf dem NRW-Netzwerktreffen Lehrerbildung 2017}}, location = {{Essen}}, title = {{{Learning to Practice (LtP): Ermittlung der Kompetenzentwicklung im Praxissemester – Pädagogisches Wissen und Kompetenzeinschätzungen.}}}, year = {{2017}}, } @inproceedings{41389, author = {{Seifert, Andreas and Schaper, Niclas}}, booktitle = {{2. Internationalen Kongress „Lernen in der Praxis.“}}, location = {{Bochum}}, title = {{{Veränderungen des bildungswissenschaftlichen Wissens und der subjektiven Kompetenzeinschätzungen von Studierenden im Praxissemester.}}}, year = {{2017}}, } @inproceedings{41388, author = {{Seifert, Andreas}}, booktitle = {{Forschungskolloquium der Psychologie}}, location = {{Paderborn}}, title = {{{Die Befragungen im bildungswissenschaftlichen Studium an der Universität Paderborn: Ansatz, Ergebnisse, Implikationen, Verbesserungsmöglichkeiten.}}}, year = {{2017}}, } @article{21449, author = {{Rostek, Tim and Homberg, Werner}}, issn = {{1877-7058}}, journal = {{Procedia Engineering}}, location = {{Cambridge}}, pages = {{2185--2190}}, publisher = {{Elsevier Ltd}}, title = {{{Locally Graded Steel Materials for Self-Sharpening Cutting Blades}}}, doi = {{10.1016/j.proeng.2017.10.979}}, volume = {{207}}, year = {{2017}}, } @article{25915, abstract = {{Dimethylacrylamide-based hydrogels were utilized as porogenic matrices in the synthesis of mesoporous aluminum oxide (γ-Al2O3) with specific BET surface areas up to 360 m2 g–1. Polymers with molecular mass in the range 12000–35000 g mol–1 were synthesized from dimethylacrylamide and various comonomers by free-radical polymerization. Photo-cross-linking of the polymers and impregnation with aluminum nitrate [Al(NO3)3] was carried out in a single step, followed by formation of Al(OH)3/AlO(OH) and subsequent calcination. Calcination led to the formation of mesoporous Al2O3 and simultaneous combustion of the hydrogel. The structural properties of the products were characterized by powder XRD, N2 physisorption analysis, Hg intrusion porosimetry, and thermogravimetric analysis.}}, author = {{Weinberger, Christian and Chen, Zimei and Birnbaum, Wolfgang and Kuckling, Dirk and Tiemann, Michael}}, issn = {{1434-1948}}, journal = {{European Journal of Inorganic Chemistry}}, pages = {{1026--1031}}, title = {{{Photo-Cross-Linked Polydimethylacrylamide Hydrogels as Porogens for Mesoporous Alumina}}}, doi = {{10.1002/ejic.201601364}}, year = {{2017}}, } @article{25914, abstract = {{Dimethylacrylamide-based hydrogels were utilized as porogenic matrices in the synthesis of mesoporous aluminum oxide (γ-Al2O3) with specific BET surface areas up to 360 m2 g–1. Polymers with molecular mass in the range 12000–35000 g mol–1 were synthesized from dimethylacrylamide and various comonomers by free-radical polymerization. Photo-cross-linking of the polymers and impregnation with aluminum nitrate [Al(NO3)3] was carried out in a single step, followed by formation of Al(OH)3/AlO(OH) and subsequent calcination. Calcination led to the formation of mesoporous Al2O3 and simultaneous combustion of the hydrogel. The structural properties of the products were characterized by powder XRD, N2 physisorption analysis, Hg intrusion porosimetry, and thermogravimetric analysis.}}, author = {{Chen, Zimei and Weinberger, Christian and Tiemann, Michael and Kuckling, Dirk}}, issn = {{2227-9717}}, journal = {{Processes}}, title = {{{Organic Polymers as Porogenic Structure Matrices for Mesoporous Alumina and Magnesia}}}, doi = {{10.3390/pr5040070}}, year = {{2017}}, } @inproceedings{21452, author = {{Homberg, Werner and Rostek, Tim and Schaper, Mirko and Grydin, Olexandr and Andreiev, Anatolii and Brosius, Alexander and Tulke, Marc}}, number = {{1}}, publisher = {{AIP Publishing}}, title = {{{Development of hybrid directionally reinforced structural parts for lightweight applications}}}, doi = {{10.1063/1.5008055}}, volume = {{1896}}, year = {{2017}}, } @inproceedings{21453, author = {{Rostek, Tim and Homberg, Werner}}, editor = {{Allwood, J.}}, issn = {{1877-7058}}, pages = {{2185--2190}}, publisher = {{Elsevier Ltd}}, title = {{{Locally Graded Steel Materials for Self-Sharpening Cutting Blades}}}, doi = {{10.1016/j.proeng.2017.10.979}}, volume = {{207}}, year = {{2017}}, } @inproceedings{27220, author = {{Schöppner, Volker and Lakemeyer, P. and Wübbeke, Andrea and Geißler, S. and Schmidt, M.}}, booktitle = {{70th Annual Assembly of the International Institute of Welding (IIW)}}, location = {{Shanghai (China)}}, title = {{{Investigation of Residual Stress in Laser Transmission Welding of Polypropylene}}}, year = {{2017}}, } @article{30259, author = {{Wiens, Eugen and Homberg, Werner}}, issn = {{1877-7058}}, journal = {{Procedia Engineering}}, keywords = {{Applied Mathematics}}, pages = {{1755--1760}}, publisher = {{Elsevier BV}}, title = {{{Internal Flow-Turning – a new approach for the manufacture of tailored tubes with a constant external diameter}}}, doi = {{10.1016/j.proeng.2017.10.934}}, volume = {{207}}, year = {{2017}}, } @inproceedings{30261, author = {{Wiens, Eugen and Homberg, Werner}}, booktitle = {{Proceedings of the International Conference on Steels in Cars and Trucks SCT 2017}}, location = {{Amsterdam}}, title = {{{Internal flow-turning – efficient manufacture of load-adapted tubes with a constant external diameter}}}, year = {{2017}}, } @book{45108, author = {{Mahnken, Rolf}}, title = {{{Effective meso properties for fibre reinforced polymer curing}}}, year = {{2017}}, } @article{15961, author = {{Weidenmann, Kay André and Pottmeyer, Florentin and Wang, Zheng and Tröster, Thomas and Meiners, Dieter and Zinn, Carolin and Schaper, Mirko and Gonzalez, Jonathan Serna}}, issn = {{2051-8218}}, journal = {{International Journal of Automotive Composites}}, title = {{{Shear edge tests: a benchmark in investigating the influence of different surface pretreatment methods on the shear stress of intrinsically manufactured metal-CFRP hybrids}}}, doi = {{10.1504/ijautoc.2016.10005303}}, year = {{2017}}, } @article{36481, abstract = {{Recent studies highlight early childhood teachers’ mathematics-related competence. Developing this competence should be a main aspect of early childhood teachers’ education. This is, however, not the case in all countries. Consequently, high-quality professional development courses are needed. Based on research results, we developed a competence-oriented continuous professional development course ("EmMa") and examined the effects of "EmMa" by asking: How does "EmMa" affect the development of early childhood teachers’ i) mathematical content knowledge, ii) mathematical pedagogical content knowledge and iii) beliefs towards mathematics in general? To answer these questions, we conducted a pre-test/post-test study including a control group with 99 in-service early childhood teachers. Results show that the course affected teachers’ mathematical pedagogical content knowledge and static orientation towards mathematics positively. From this we conclude that scaling-up "EmMa" might be a suitable approach to bridge the gap between pre-service education with nearly no mathematics and the challenges of early mathematics education.}}, author = {{Bruns, Julia and Eichen, Lars and Gasteiger, Hedwig}}, journal = {{Mathematics Teacher Education and Development (MTED)}}, keywords = {{Beliefs, Competency Based Teacher Education, Control Groups, Early Childhood Education, Faculty Development, Foreign Countries, Inservice Teacher Education, Intervention, Mathematical Aptitude, Mathematics Skills, Pedagogical Content Knowledge, Preschool Teachers, Pretests Posttests, Professional Continuing Education, Statistical Analysis, Teacher Competency Testing}}, number = {{3}}, pages = {{76–93}}, title = {{{Mathematics-related Competence of Early Childhood Teachers Visiting a Continuous Professional Development Course: An Intervention Study}}}, volume = {{19}}, year = {{2017}}, }