@inbook{39610,
  author       = {{Morrien, Rita}},
  booktitle    = {{Arbeitsbuch Judith Kuckart. Erzählen - Theater - Tanz}},
  editor       = {{Canaris, Johanna and Elit, Stefan}},
  isbn         = {{9783631843079}},
  pages        = {{189--218}},
  publisher    = {{Peter Lang}},
  title        = {{{'Abgrund Mensch': Judith Kuckarts Um- und Weiterschriften der 'westfälischen Heimatdichterin' Annette von Droste-Hülshoff}}},
  volume       = {{9}},
  year         = {{2021}},
}

@inbook{39613,
  author       = {{Morrien, Rita}},
  booktitle    = {{Arbeitsbuch Judith Kuckart}},
  editor       = {{Elit, Stefan and Canaris, Johanna}},
  pages        = {{103--116}},
  publisher    = {{Peter Lang}},
  title        = {{{"Ich gehe durch andere Räume. Ich gehe durch eure Träume." - (Nicht-)Orte der Liebe in Judith Kuckarts "Kein Sturm, nur Wetter"}}},
  volume       = {{9}},
  year         = {{2021}},
}

@misc{51555,
  author       = {{Hilgert, Joachim}},
  booktitle    = {{Mathematische Semesterberichte}},
  pages        = {{175–177}},
  title        = {{{Georg Glaeser (Hrsg.): 77-mal Mathematik für zwischendurch – Unterhaltsame Kuriositäten und unorthodoxe Anwendungen. Springer Spektrum 2020}}},
  doi          = {{10.1007/s00591-021-00296-6}},
  volume       = {{68}},
  year         = {{2021}},
}

@article{33205,
  author       = {{Leineweber, Jonas}},
  isbn         = {{978-3-8309-4480-5}},
  journal      = {{Rheinisch-Westfälische Zeitschrift für Volkskunde }},
  pages        = {{165--193}},
  publisher    = {{Waxmann}},
  title        = {{{Immaterielles Kulturerbe in der Coronakrise. Gesellschaftliche Bräuche, Rituale und Feste und die Folgen von Covid-19 am Beispiel des Schützenwesens}}},
  doi          = {{10.31244/rwz/2021/12}},
  volume       = {{66}},
  year         = {{2021}},
}

@book{52100,
  editor       = {{Ried, Dennis and König, Stefan}},
  isbn         = {{978-3-89948-404-5}},
  publisher    = {{Carus-Verlag}},
  title        = {{{Lieder II}}},
  volume       = {{II/2}},
  year         = {{2021}},
}

@article{53085,
  author       = {{Gaiser, Nina and Bierkandt, Thomas and Oßwald, Patrick and Zinsmeister, Julia and Kathrotia, Trupti and Shaqiri, Shkelqim and Hemberger, Patrick and Kasper, Tina and Aigner, Manfred and Köhler, Markus}},
  issn         = {{0016-2361}},
  journal      = {{Fuel}},
  keywords     = {{Organic Chemistry, Energy Engineering and Power Technology, Fuel Technology, General Chemical Engineering}},
  publisher    = {{Elsevier BV}},
  title        = {{{Oxidation of oxymethylene ether (OME0−5): An experimental systematic study by mass spectrometry and photoelectron photoion coincidence spectroscopy}}},
  doi          = {{10.1016/j.fuel.2021.122650}},
  volume       = {{313}},
  year         = {{2021}},
}

@inbook{52814,
  author       = {{Büttner, Denise and Roll , Heike}},
  booktitle    = {{Vermitteln - verbinden - verstehen. 46. Jahrestagung des Fachverbandes Deutsch als Fremd- und Zweitsprache an der Technischen Universität Chemnitz }},
  editor       = {{Hinzmann, Friederike and Storz, Coretta  and Hülsmann, Annemarie  and Rosner, Ulrike  and Dupke, Benjamin }},
  pages        = {{85--103}},
  publisher    = {{Universitätsverlag Göttingen}},
  title        = {{{„Zunge: Sprache“ Literarische Mehrsprachigkeit im Deutschunterricht am Beispiel der Erzählung „Mutterzunge“ von Emine Sevgi Özdamar}}},
  year         = {{2021}},
}

@article{45962,
  abstract     = {{<jats:title>Abstract</jats:title>
               <jats:p>An algorithm is proposed for generalized mean curvature flow of closed two-dimensional surfaces, which include inverse mean curvature flow and powers of mean and inverse mean curvature flow. Error estimates are proved for semidiscretizations and full discretizations for the generalized flow. The algorithm proposed and studied here combines evolving surface finite elements, whose nodes determine the discrete surface, and linearly implicit backward difference formulae for time integration. The numerical method is based on a system coupling the surface evolution to nonlinear second-order parabolic evolution equations for the normal velocity and normal vector. A convergence proof is presented in the case of finite elements of polynomial degree at least 2 and backward difference formulae of orders 2 to 5. The error analysis combines stability estimates and consistency estimates to yield optimal-order $H^1$-norm error bounds for the computed surface position, velocity, normal vector, normal velocity and therefore for the mean curvature. The stability analysis is performed in the matrix–vector formulation and is independent of geometric arguments, which only enter the consistency analysis. Numerical experiments are presented to illustrate the convergence results and also to report on monotone quantities, e.g. Hawking mass for inverse mean curvature flow, and complemented by experiments for nonconvex surfaces.</jats:p>}},
  author       = {{Binz, Tim and Kovács, Balázs}},
  issn         = {{0272-4979}},
  journal      = {{IMA Journal of Numerical Analysis}},
  keywords     = {{Applied Mathematics, Computational Mathematics, General Mathematics}},
  number       = {{3}},
  pages        = {{2545--2588}},
  publisher    = {{Oxford University Press (OUP)}},
  title        = {{{A convergent finite element algorithm for generalized mean curvature flows of closed surfaces}}},
  doi          = {{10.1093/imanum/drab043}},
  volume       = {{42}},
  year         = {{2021}},
}

@article{45961,
  author       = {{Nick, Jörg and Kovács, Balázs and Lubich, Christian}},
  issn         = {{0029-599X}},
  journal      = {{Numerische Mathematik}},
  keywords     = {{Applied Mathematics, Computational Mathematics}},
  number       = {{4}},
  pages        = {{997--1000}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{Correction to: Stable and convergent fully discrete interior–exterior coupling of Maxwell’s equations}}},
  doi          = {{10.1007/s00211-021-01196-6}},
  volume       = {{147}},
  year         = {{2021}},
}

@techreport{17514,
  abstract     = {{This paper introduces an index that captures the complexity of countries’ corporate income tax systems faced by multinational corporations. It is based on surveys of highly experienced tax consultants of the largest international tax services networks. The index, called the Tax Complexity Index (TCI), is composed of a tax code subindex covering tax regulations and a tax framework subindex covering tax processes and features. For a sample of 100 countries for the year 2016, we find that the level of tax complexity varies considerably across countries, while tax code and framework complexity also vary within countries. From a global perspective, tax complexity is strongly driven by the complexity of both transfer pricing regulations in the tax code and tax audits in the tax framework. When analyzing the associations with other country characteristics, we identify different correlation patterns. For example, tax framework complexity is negatively associated with countries’ governance, suggesting that strongly governed countries tend to have less complex tax frameworks, while tax code complexity is positively associated with the statutory tax rate, indicating that high-tax countries tend to have more complex tax codes. However, none of the observed associa-tions are very strong. We conclude that tax complexity represents a distinct country charac-teristic and propose the use of our TCI and its subindices in future research.}},
  author       = {{Hoppe, Thomas and Schanz, Debora and Sturm, Susann and Sureth-Sloane, Caren}},
  title        = {{{The Tax Complexity Index – A Survey-Based Country Measure of Tax Code and Framework Complexity}}},
  doi          = {{10.2139/ssrn.3469663}},
  year         = {{2021}},
}

@book{52390,
  author       = {{Ricke, Anna}},
  isbn         = {{978-3-8260-7282-6}},
  title        = {{{Smaragda Eger-Berg (1886–1954). Bohemienne – Musikerin – Schwester. Bedingungen künstlerischer Emanzipation in der Wiener Moderne}}},
  volume       = {{14}},
  year         = {{2021}},
}

@techreport{29315,
  abstract     = {{We merge a sample of 492 merger and acquisition (M&A) announcements from 284 acquiring firms across North America and Europe with data from 5-year single-name credit default swaps (CDSs) that are written on stock-listed acquiring firms between 2005 and 2018. Subsequently, we empirically analyze the CDS investors’ risk perception of M&A announcements using event study methodologies. As a baseline finding, we provide evidence for significantly positive cumulative average abnormal CDS spread changes suggesting that CDS investors perceive an increase in the acquiring firms’ credit risk exposures due to M&A announcements. Our baseline finding holds under several robustness checks, especially when controlling for the robustness of the empirical design as well as regional and sectoral differences. Moreover, results from a large variety of sensitivity analyses including deal and firm characteristics provide a deeper insight into the driving factors of CDS investors’ risk perceptions of M&A announcements.}},
  author       = {{Hippert, Benjamin and Uhde, André}},
  title        = {{{CDS investors’ risk perceptions of M&A announcements}}},
  year         = {{2021}},
}

@article{53363,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>In this survey paper we aim to provide an overview of research on mathematics textbooks and, more broadly, curriculum resources as instruments for change related to mathematical content, instructional goals and practices, and student learning of mathematics. In particular, we elaborate on the following themes: (1) The role of curriculum resources as instruments for change from a theoretical perspective; (2) The design of curriculum resources to mediate the implementation of reform ideas and innovative practice; (3) Teachers’ influence on the implementation of change through curriculum resources; (4) Students’ influence on the implementation of change through curriculum resources; and (5) Evidence of curriculum resources yielding changes in student-related factors or variables. We claim that, whilst textbooks and curriculum resources are influential, they alone cannot change teachers’ teaching nor students’ learning practices in times of curricular change. Moreover, more knowledge is needed about features of curriculum resources that support the implementation of change. We contend that curriculum innovations are likely to be successful, if teachers and students are supported to co- and re-design the relevant curriculum trajectories and materials in line with the reform efforts and their own individual needs.</jats:p>}},
  author       = {{Rezat, Sebastian and Fan, Lianghuo and Pepin, Birgit}},
  issn         = {{1863-9690}},
  journal      = {{ZDM – Mathematics Education}},
  keywords     = {{General Mathematics, Education}},
  number       = {{6}},
  pages        = {{1189--1206}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{Mathematics textbooks and curriculum resources as instruments for change}}},
  doi          = {{10.1007/s11858-021-01309-3}},
  volume       = {{53}},
  year         = {{2021}},
}

@inbook{35720,
  author       = {{Biehler, Rolf}},
  booktitle    = {{Lehrinnovationen in der Hochschulmathematik . Konzepte und Studien zur Hochschuldidaktik und Lehrerbildung Mathematik}},
  editor       = {{Biehler, Rolf and Eichler, Andreas and Hochmuth, Reinhard and Rach, Stefanie and Schaper, Niclas}},
  pages        = {{285–290}},
  publisher    = {{Springer Spektrum}},
  title        = {{{Mathematikvorkurse als Brücke in das Studium–Einführung}}},
  doi          = {{10.1007/978-3-662-62854-6_13}},
  year         = {{2021}},
}

@book{35734,
  editor       = {{Biehler, Rolf and Eichler, Andreas and Hochmuth, Reinhard and Rach, Stefanie and Schaper, Niclas}},
  isbn         = {{9783662628539}},
  issn         = {{2197-8751}},
  publisher    = {{Springer Spektrum}},
  title        = {{{Lehrinnovationen in der Hochschulmathematik}}},
  doi          = {{10.1007/978-3-662-62854-6}},
  year         = {{2021}},
}

@inbook{35704,
  author       = {{Winsløw, Carl and Biehler, Rolf and Jaworski, Barbara and Rønning, Frode and Wawro, Megan}},
  booktitle    = {{Research and Development in University Mathematics Education}},
  editor       = {{Durand-Guerrier, V. and Hochmuth, R. and Nardi, E. and Winsløw, C.}},
  isbn         = {{9780429346859}},
  pages        = {{59--79}},
  publisher    = {{Routledge}},
  title        = {{{Education and professional development of university mathematics teachers}}},
  doi          = {{10.4324/9780429346859-6}},
  year         = {{2021}},
}

@article{53872,
  author       = {{Ebrahimi, Bohlool and Tavana, Madjid and Kleine, Andreas and Dellnitz, Andreas}},
  issn         = {{0171-6468}},
  journal      = {{OR Spectrum}},
  number       = {{4}},
  pages        = {{1103--1124}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{An epsilon-based data envelopment analysis approach for solving performance measurement problems with interval and ordinal dual-role factors}}},
  doi          = {{10.1007/s00291-021-00649-6}},
  volume       = {{43}},
  year         = {{2021}},
}

@article{41009,
  abstract     = {{Platinum hydride species catalyze a number of interesting organic reactions. However, their reactions typically involve the use of high loadings of noble metal and are difficult to recycle, making them somewhat unsustainable. We have synthesized surface-immobilized Pt–H species via oxidative addition of surface OH groups to Pt(PtBu3)2 (1), a rarely used immobilization technique in surface organometallic chemistry. The hydride species thus made were characterized by infrared, magic-angle spinning nuclear magnetic resonance, and X-ray absorption spectroscopies and catalyzed both olefin isomerization and cycloisomerization of a 1,6 enyne (5) with a high selectivity and low Pt loading.}},
  author       = {{Maier, Sarah and Cronin, Steve P. and Vu Dinh, Manh-Anh and Li, Zheng and Dyballa, Michael and Nowakowski, Michał and Bauer, Matthias and Estes, Deven P.}},
  issn         = {{0276-7333}},
  journal      = {{Organometallics}},
  keywords     = {{Inorganic Chemistry, Organic Chemistry, Physical and Theoretical Chemistry}},
  number       = {{11}},
  pages        = {{1751--1757}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Immobilized Platinum Hydride Species as Catalysts for Olefin Isomerizations and Enyne Cycloisomerizations}}},
  doi          = {{10.1021/acs.organomet.1c00216}},
  volume       = {{40}},
  year         = {{2021}},
}

@misc{54068,
  author       = {{Markewitz, Friedrich}},
  booktitle    = {{WSK Band 6 (Wörterbücher zur Sprach- und Kommunikationswissenschaft): Text- und Diskurslinguistik}},
  editor       = {{Gansel, Christina and Spieß, Constanze}},
  publisher    = {{Walter de Gruyter}},
  title        = {{{Textsortengeschichte}}},
  year         = {{2021}},
}

@article{33668,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Vaccinations, lockdowns and testing strategies are three potential elements of an effective anti-coronavirus, and in particular Covid-19, health policy. The following analysis considers - within a simple model - the potentially crucial role of a Corona testing approach in combination with a quarantine approach which is shown herein to be a substitute for broad lockdown measures. The cost of lockdowns/shutdowns are rather high so that – beyond progress in terms of a broad vaccination program – a rational testing strategy should also be carefully considered. Testing has to be organized on the basis of an adequate testing infrastructure which could largely be implemented in firms, schools, universities and public administration settings. As regards the cost of a systematic broad Covid-19 testing strategy, these could come close to 0.5% of national income if there are no vaccinations. The Testing &amp; Quarantine approach suggested here – with tests for symptomatic as well as asymptomatic people - is based on a random sampling and would require rather broad and frequent testing; possibly one test per person every 7–10 days. At the same time, one should consider that the cost of further lockdowns/shutdowns of a duration of 1 month could be very high, such that a standard cost benefit analysis supports the testing approach suggested herein. Also, an optimal policy mix could be designed where both vaccinations and testing play a crucial role. As of late January 2021, no further lockdowns in Germany and other OECD countries would be necessary if a broad testing infrastructure can be established rather quickly. This in turn will reinforce economic optimism and help to jumpstart economic growth in Europe, the US and Asia in a solid way. The basic logic of the testing approach pointed out here for industrialized countries could also be applied in developing countries. The approach presented is complementary to the IMF analysis of Cherif/Hasanov.</jats:p>}},
  author       = {{Gries, Thomas and Welfens, Paul J. J.}},
  issn         = {{1612-4804}},
  journal      = {{International Economics and Economic Policy}},
  keywords     = {{Economics and Econometrics}},
  number       = {{1}},
  pages        = {{1--24}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{Testing as an approach to control the Corona epidemic dynamics and avoid lockdowns}}},
  doi          = {{10.1007/s10368-021-00495-5}},
  volume       = {{18}},
  year         = {{2021}},
}