@misc{7720, abstract = {{Die Erfindung betrifft einen optischen Übergang zwischen zwei optischen Schichtwellenleitern. Dazu ist eine Anordnung vorgesehen aus einem ersten optischen Schichtwellenleiter (2) und einem zweiten optischen Schichtwellenleiter (3), wobei der erste optische Schichtwellenleiter (2) und der zweite optische Schichtwellenleiter (3) voneinander verschiedene über ihre jeweilige Länge konstante Dicken (d, r) aufweisen, der erste optische Schichtwellenleiter (2) mit dem zweiten optischen Schichtwellenleiter (3) mittels einer optischen Schichtwellenleiterstruktur (4) verbunden ist, die über ihre gesamte Länge (w) eine Dicke (h) aufweist, die zwischen der Dicke (d) des ersten optischen Schichtwellenleiters (2) und der Dicke (r) des zweiten optischen Schichtwellenleiters (3) liegt. Erfindungsgemäß ist die Dicke (h) der optischen Schichtwellenleiterstruktur (4) über die gesamte Länge (w) der optischen Schichtwellenleiterstruktur (4) konstant. Damit wird eine Möglichkeit für einen effizienten und mit geringen Verlusten behafteten Übergang zwischen zwei optischen Schichtwellenleitern mit unterschiedlicher Dicke bereitgestellt. }}, author = {{Hammer, Manfred and Förstner, Jens and Ebers, Lena}}, keywords = {{tet_topic_waveguides}}, pages = {{9}}, title = {{{Optical transition between two optical waveguides layer and method for transmitting light}}}, year = {{2019}}, } @article{4562, abstract = {{Employing main and sector-specific investment-grade CDS indices from the North American and European CDS market and performing mean-variance out-of-sample analyses for conservative and aggressive investors over the period from 2006 to 2014, this paper analyzes portfolio benefits of adding corporate CDS indices to a traditional financial portfolio consisting of stock and sovereign bond indices. As a baseline result, we initially find an increase in portfolio (downside) risk-diversification when adding CDS indices, which is observed irrespective of both CDS markets, investor-types and different sub-periods, including the global financial crisis and European sovereign debt crisis. In addition, the analysis reveals higher portfolio excess returns and performance in CDS index portfolios, however, these effects clearly differ between markets, investor-types and sub-periods. Overall, portfolio benefits of adding CDS indices mainly result from the fact that institutional investors replace sovereign bond indices rather than stock indices by CDS indices due to better risk-return characteristics. Our baseline findings remain robust under a variety of robustness checks. Results from sensitivity analyses provide further important implications for institutional investors with a strategic focus on a long-term conservative portfolio management.}}, author = {{Hippert, Benjamin and Uhde, André and Wengerek, Sascha Tobias}}, journal = {{Review of Derivatives Research }}, keywords = {{Corporate credit default swap indices, Mean-variance asset allocation, Out-of-sample portfolio optimization, Portfolio risk-diversification, Portfolio performance evaluation}}, number = {{2}}, pages = {{203--259}}, title = {{{Portfolio Benefits of Adding Corporate Credit Default Swap Indices: Evidence from North America and Europe}}}, doi = {{https://doi.org/10.1007/s11147-018-9148-8}}, volume = {{22}}, year = {{2019}}, } @inbook{30955, author = {{Lammer, Christina}}, booktitle = {{Naar het onbekende: Perspectieven op literatuur, cultuur en kennis}}, editor = {{van der Meer, Anne-Fleur and Schrover, Wouter and Moser, Nelleke}}, pages = {{81 -- 91}}, title = {{{'De triomf van de mens’ – kennis in 'Geschiedenis van een berg'}}}, year = {{2019}}, } @inproceedings{31067, author = {{Guettatfi, Zakarya and Platzner, Marco and Kermia, Omar and Khouas, Abdelhakim}}, booktitle = {{2019 IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW)}}, publisher = {{IEEE}}, title = {{{An Approach for Mapping Periodic Real-Time Tasks to Reconfigurable Hardware}}}, doi = {{10.1109/ipdpsw.2019.00027}}, year = {{2019}}, } @inbook{31752, author = {{Willeke, Stephanie}}, booktitle = {{Hass/Literatur. Literatur- und kulturwissenschaftliche Beiträge zu einer Theorie- und Diskursgeschichte}}, editor = {{Brokoff , Jürgen and Walter-Jochum, Robert }}, pages = {{355--377}}, publisher = {{transcript }}, title = {{{Konstruktionen des Terrors. Zur Hassrede in den Romanen Jenseits von Deutschland von George Tenner und Das dunkle Schiff von Sherko Fatah}}}, year = {{2019}}, } @inbook{31746, author = {{Willeke, Stephanie}}, booktitle = {{Zwischen den Sprachen – Mit der Sprache? Deutschsprachige Literatur in Palästina und Israel}}, editor = {{Willeke, Stephanie and Eke, Norbert Otto}}, pages = {{251--270}}, publisher = {{Aisthesis }}, title = {{{„So kommt doch alles noch zum Happy End.“ Sammy Gronemanns zionistische Komödie Der Prozess um des Esels Schatten}}}, year = {{2019}}, } @inbook{31756, author = {{Willeke, Stephanie}}, booktitle = {{Das Politische in der Literatur der Gegenwart}}, editor = {{Neuhaus , Stefan and Nover, Immanuel }}, pages = {{433--450}}, publisher = {{de Gruyter}}, title = {{{Der eingehegte Terrorist? Dorothea Dieckmanns Guantánamo}}}, year = {{2019}}, } @inbook{31809, author = {{Ballweg, Sandra}}, booktitle = {{Portfolioarbeit im Kontext von Sprachenunterricht. Neue internationale Entwicklungen}}, editor = {{Ballweg, Sandra and Kühn, Bärbel}}, pages = {{191--210}}, publisher = {{Universitätsdrucke Göttingen}}, title = {{{Portfolioarbeit als Professionalisierungsgelegenheit}}}, year = {{2019}}, } @inbook{32003, author = {{Ballweg, Sandra and Riemer, Claudia}}, booktitle = {{Dhoch3-Studienmodule Deutsch als Fremdsprache}}, title = {{{Das Verhältnis zwischen Fremdsprachenerwerbsforschung und Fremdsprachenunterricht - Einführung in das Themenfeld}}}, doi = {{10.31816/Dhoch3.2019.87}}, year = {{2019}}, } @inbook{32011, author = {{Ballweg, Sandra and Introna, Silvia and Riemer, Claudia}}, booktitle = {{Dhoch3-Studienmodule Deutsch als Fremdsprache}}, title = {{{Theorien und Hypothesen für den L2-Erwerb - Einführung in das Themenfeld}}}, doi = {{10.31816/Dhoch3.2018.81}}, year = {{2019}}, } @unpublished{16711, abstract = {{Embedding techniques allow the approximations of finite dimensional attractors and manifolds of infinite dimensional dynamical systems via subdivision and continuation methods. These approximations give a topological one-to-one image of the original set. In order to additionally reveal their geometry we use diffusion mapst o find intrinsic coordinates. We illustrate our results on the unstable manifold of the one-dimensional Kuramoto--Sivashinsky equation, as well as for the attractor of the Mackey-Glass delay differential equation.}}, author = {{Gerlach, Raphael and Koltai, Péter and Dellnitz, Michael}}, booktitle = {{arXiv:1902.08824}}, title = {{{Revealing the intrinsic geometry of finite dimensional invariant sets of infinite dimensional dynamical systems}}}, year = {{2019}}, } @inproceedings{32089, author = {{Häsel-Weide, Uta and Nührenbörger, M.}}, booktitle = {{Proceedings of the Third International Conference on Mathematics Textbook Research an Development}}, editor = {{Rezat, Sebastian and Fan, L. and Hattermann, M. and Schumacher, J. and Wuschke, H.}}, pages = {{185--190}}, title = {{{Materials für inclusive mathematics education - Design principles an practices.}}}, year = {{2019}}, } @article{32090, author = {{Breucker, T. and Freesemann, O. and Häsel-Weide, Uta and Opitz, E. M. and Nührenbörger, M. and Wittich, C.}}, journal = {{Zeitschrift für Heilpädagogik}}, number = {{70}}, pages = {{316--326}}, title = {{{Fördern im inklusiven Mathematikunterricht im Spannungsfeld zwischen gemeinsamen Lernsituationen und gezielter Förderung.}}}, year = {{2019}}, } @misc{32091, author = {{Häsel-Weide, Uta and Nührenbörger, M. and Reinold, M.}}, isbn = {{978-3122009946}}, pages = {{80}}, publisher = {{Klett}}, title = {{{Das Zahlenbuch 4. Förderheft}}}, year = {{2019}}, } @misc{31954, author = {{Häsel-Weide, Uta and Nührenbörger, M. and Reinold, M.}}, isbn = {{ 978-3-12-200998-4}}, pages = {{144}}, publisher = {{Klett}}, title = {{{Das Zahlenbuch. Förderkommentar Lernen zum 4. Schuljahr}}}, year = {{2019}}, } @misc{18734, author = {{Peckhaus, Volker}}, booktitle = {{Zentralblatt für Mathematik und ihre Grenzgebiete }}, title = {{{Wille, Matthias, "Gottlob Frege. Begriffsschrift, eine der arithmetischen nachgebildete Formelsprache des reinen Denkens", Springer Spektrum: Berlin 2018 (Klassische Texte der Wissenschaft)}}}, year = {{2019}}, } @misc{18736, author = {{Peckhaus, Volker}}, booktitle = {{Zentralblatt für Mathematik und ihre Grenzgebiete}}, title = {{{Honerkamp, Josef, "Denken in Strukturen und seine Geschichte. Von der Kraft des mathematischen Beweises", Springer: Berlin 2018}}}, year = {{2019}}, } @inbook{32202, author = {{Ptashnyk, Stefaniya}}, booktitle = {{Dimensionen des sprachlichen Raums: Variation - Mehrsprachigkeit - Konzeptualisie-rung (Schriften zur deutschen Sprache in Österreich)}}, editor = {{Bülow, Lars and Fischer, Ann Kathrin and Herbert, Kristina }}, pages = {{213–232}}, publisher = {{Peter Lang Verlag}}, title = {{{Borrowing, Code-Switching and Fused Lects: Language Contact and Multilingual Prac-tices from a Socio-Historical Perspective}}}, volume = {{45}}, year = {{2019}}, } @inbook{32253, author = {{Ptashnyk, Stefaniya}}, booktitle = {{Mediale Selbstreferenzen}}, editor = {{Tancer, Josef }}, pages = {{19–54}}, publisher = {{new academic press}}, title = {{{Mediale (Selbst-)Referenzen in der galizischen Presse des 19. Jahrhunderts: „Gazeta Lwowska“ und „Lemberger Zeitung“ im Vergleich}}}, year = {{2019}}, } @misc{32257, author = {{Ptashnyk, Stefaniya and Falkson, Katharina and Lemberg, Ingrid}}, booktitle = {{HSozKult (online unter https://www.hsozkult.de/conferencereport/id/tagungsberichte-8281)}}, title = {{{„Stadtrechte und Stadtrechtsreformationen“. Tagung an der Heidelberger Akademie der Wissenschaften vom 03.04.2019 – 05.04.2019. Tagungsbericht}}}, year = {{2019}}, } @misc{18987, author = {{Peckhaus, Volker}}, booktitle = {{Mathematical Reviews}}, title = {{{Jesseph, Douglas M., “Hobbes and the Syllogism”, in: Marco Sgarbi/Matteo Cosci (Hgg.), The Aftermath of Syllogism, Blumsbury Academic: London 2018 (Bloomsbury Studies in the Aristotelian Tradition), 67–81}}}, year = {{2019}}, } @misc{18988, author = {{Peckhaus, Volker}}, booktitle = {{Mathematical Reviews }}, title = {{{Tieszen, Richard, “Husserl and Gödel”, in: Stefania Centrone (Hg.), Essays on Husserl’s Logic and Philosophy of Mathematics, Springer: Dordrecht 2017 (Synthese Library; 384), 431–459}}}, year = {{2019}}, } @misc{18993, author = {{Peckhaus, Volker}}, booktitle = {{Mathematical Reviews }}, title = {{{Vanzo, Alberto, “Kant’s False Subtlety of the Four Syllogistic Figures”, in: Marco Sgarbi/Matteo Cosci (Hgg.), The Aftermath of Syllogism, Blumsbury Academic: London 2018 (Bloomsbury Studies in the Aristotelian Tradition), 157–190}}}, year = {{2019}}, } @inbook{32092, author = {{Häsel-Weide, Uta}}, booktitle = {{Zwischen Persönlichkeitsbildung und Leistungsentwicklung. Fachspezifische Zugänge zu inklusivem Unterricht}}, editor = {{Baumert, B. and Willen, M.}}, isbn = {{ 978-3781523234}}, pages = {{175--181}}, publisher = {{Klinkhardt}}, title = {{{Lernumgebungen für den inklusiven Mathematikunterricht zwischen reichhaltiger Offenheit und fokussierter Förderung}}}, year = {{2019}}, } @inbook{32259, author = {{Ptashnyk, Stefaniya}}, booktitle = {{Journal of Historical Sociolinguistics, 2/2019 (online)}}, editor = {{Denkler, Markus and Elspaß, Stephan and Hüpper, Dagmar and Topalović, Elvira }}, publisher = {{Heidelberg}}, title = {{{Book Review: Deutsch im 17. Jahrhundert: Studien zu Sprachkontakt, Sprachvariation und Sprachwandel. Gedenkschrift für Jürgen Macha. (Sprache - Literatur und Studien zur Linguistik/Germanistik, Band 46)}}}, year = {{2019}}, } @misc{8955, author = {{Kilic, Mehmet}}, title = {{{Vertrauensbildung und Reputationssysteme auf digitalen B2B-Märkten - Ein klassifizierender Überblick}}}, year = {{2019}}, } @misc{9773, author = {{Yilmaz, Melih}}, title = {{{Gib anderen dein Zuhause - Eine deskriptive Analyse der Ausbuchungsrate von Inseraten auf Airbnb}}}, year = {{2019}}, } @misc{8800, author = {{Rodehutskors, Luca Maurizio}}, title = {{{Conception of a digital Sales Bonus System based on Blockchain Technology}}}, year = {{2019}}, } @misc{9515, author = {{Dirksen, Daniel}}, title = {{{Entwicklung eines Frameworks für Geschäftsmodelle im On-The-Fly Computing}}}, year = {{2019}}, } @misc{13804, author = {{Lo Tauro, Santo Stefan}}, title = {{{Worüber sprechen Ihre Kunden? Anwendung und Evaluation von Text Mining auf Online-Kundenbewertungen am Beispiel von Google Maps Reviews}}}, year = {{2019}}, } @misc{14541, author = {{Post, Hannes}}, title = {{{Haben B2B-Kunden auch Gefühle? Eine semantische Analyse von Online-Kundenbewertungen auf digitalen B2B-Märkten}}}, year = {{2019}}, } @misc{13747, author = {{Henke, Lena}}, title = {{{Kreativität in der Wirtschaftsinformatik: Ein systematischer Literaturüberblick von Experiment-Designs}}}, year = {{2019}}, } @misc{13746, author = {{Recker, Davide Pietro}}, title = {{{Kreativitäts-Experimente in der Wirtschaftsinformatik - Ein systematischer Literaturüberblick}}}, year = {{2019}}, } @misc{13446, author = {{Meier zu Wickern, Joelle}}, title = {{{The Digital CV - Ein Literaturüberblick über Onlien-Bewertungen in Online Labor Markets}}}, year = {{2019}}, } @misc{13575, author = {{Petrovic, Bogoljub}}, title = {{{Eine deskriptive Analyse der Verteilung von Online-Bewertungen auf digitalen B2B-Märkten}}}, year = {{2019}}, } @misc{13572, author = {{Schulte, Tristan Aaron}}, title = {{{Eine semantische Analyse von Online-Bewertungen auf digitalen B2B-Märkten}}}, year = {{2019}}, } @misc{9675, author = {{Golis, Miriam}}, title = {{{Entwicklung eines Rahmenwerks zur Evaluation von Geschäftsmodellen zur Entscheidungsunterstützung für Kooperationen mit Startups am Beispiel der Schüco International KG}}}, year = {{2019}}, } @misc{10289, author = {{Brockmeier, Felix Karl}}, title = {{{Feasibility study on the use of Hypermedia/HATEOAS using an example of a RESTful API from the financial services environment based on OpenAPI/Swagger}}}, year = {{2019}}, } @misc{13450, author = {{Schiller, Leo}}, title = {{{Mechanismen zur Aggregation der Meinungen einer Crowd - Ein klassifizierender Literaturüberblick}}}, year = {{2019}}, } @misc{6627, author = {{Selig, Maximilian Julius}}, title = {{{The effects of driver variables on online review metrics: A meta-analysis}}}, year = {{2019}}, } @misc{12079, author = {{Althaus, Maike}}, title = {{{Share at all Costs? Ein Literaturüberblick zur Privacy Risk Calculus Theory}}}, year = {{2019}}, } @misc{10203, author = {{Rohde, Lukas}}, title = {{{Sozioökonomische Implikationen des Sharing Economy Trends}}}, year = {{2019}}, } @misc{15026, author = {{Bentfeld, Bastian}}, title = {{{Reputation in der Sharing Economy - Eine ökonometrische Analyse des Zusammenhangs zwischen Online-Bewertungen und Nachfrage am Beispiel von Airbnb}}}, year = {{2019}}, } @misc{10038, author = {{Agethen, Christopher Heinrich}}, title = {{{Stoppt das Sharing? Ökonometrische Untersuchungen zur gesetzlichen Einschränkung von Airbnb}}}, year = {{2019}}, } @misc{11959, author = {{Wegener, Moritz}}, title = {{{It's a match! - Entwicklung eines Ansatzes zur Identifikation von Cross-Listings auf Airbnb und TripAdvisor}}}, year = {{2019}}, } @misc{13449, author = {{Gerzen, Gabriele}}, title = {{{Do Online Ratings Matter in the Sharing Economy? Analyzing the Impact of Online Ratings on Demand on Airbnb}}}, year = {{2019}}, } @misc{14987, author = {{Resch, Tim}}, title = {{{Möglichkeiten und Grenzen crowdbasierter Ideenbewertung - Ein systematischer Literaturüberblick}}}, year = {{2019}}, } @misc{13748, author = {{Milder, Christoph}}, title = {{{Externe Stimuli zur Geschäftsmodell-Ideengenerierung: Ein Experimenteller Ansatz}}}, year = {{2019}}, } @inbook{32157, author = {{Karsten, Andrea}}, booktitle = {{Praxishandbuch Schreibdidaktik. Übungen zur Vermittlung wissenschaftlicher Schreibkompetenzen}}, editor = {{Wymann, Christian}}, pages = {{158 -- 163}}, publisher = {{Barbara Budrich}}, title = {{{Blätterwald zur Positionierung in akademischen Texten}}}, year = {{2019}}, } @article{15723, abstract = {{RbInSe2 is attracting growing interest as a secondary semiconductor compound in Cu(In,Ga)Se2-based solar cells by virtue of the recent investigations on absorber post-deposition treatments with alkali metal salts that have resulted in significant efficiency improvements. However, the detection of the RbInSe2 phase on the surface of chalcopyrite absorbers is very challenging due to its nanometric thickness and the limited information available about its fundamental properties. In this context, this work expounds a detailed analysis of the vibrational properties of RbInSe2 that combines first-principle calculations with multiwavelength Raman scattering spectroscopy and provides a methodology for the detection and identification of very thin layers of this material employing solely optical measurements. As a result, here, we present the classification of the different vibrational modes together with the fingerprint Raman spectra of RbInSe2 thin films measured under five different excitations (close to and far from resonance). The employment of a 442 nm excitation wavelength is found to be the most adequate strategy for the detection and characterization of the RbInSe2 phase in view of its resonance with the band gap of the material and its low penetration depth. Additionally, the purity of the deposited thin films as well as the possible influence of the subjacent layers on the Raman spectra of the compound are also investigated by analyzing the presence of secondary phases and by measuring RbInSe2 thin films deposited onto Mo-coated soda-lime glass, respectively. These results set the basis for the future evaluation of the suitability of Raman spectroscopy as a fast and nondestructive characterization technique for the reliable identification and characterization of the nanometric layers of RbInSe2 in Cu(In,Ga)Se2-based solar cells.}}, author = {{Guc, Maxim and Kodalle, Tim and Kormath Madam Raghupathy, Ramya and Mirhosseini, Hossein and Kühne, Thomas and Becerril-Romero, Ignacio and Pérez-Rodríguez, Alejandro and Kaufmann, Christian A. and Izquierdo-Roca, Victor}}, issn = {{1932-7447}}, journal = {{The Journal of Physical Chemistry C}}, pages = {{1285--1291}}, title = {{{Vibrational Properties of RbInSe2: Raman Scattering Spectroscopy and First-Principle Calculations}}}, doi = {{10.1021/acs.jpcc.9b08781}}, year = {{2019}}, }