@inproceedings{37478,
  author       = {{Haak, Inka and Gildehaus, Lara and Liebendörfer, Michael}},
  booktitle    = {{Naturwissenschaftlicher Unterricht und Lehrerbildung im Umbruch?}},
  pages        = {{89–92}},
  publisher    = {{Universität Duisburg-Essen}},
  title        = {{{Genese und Funktionen von Lerngruppen in der Studieneingangsphase}}},
  year         = {{2021}},
}

@article{37473,
  abstract     = {{<jats:title>Abstract</jats:title>
               <jats:p>We investigated university students’ study of mathematics in the digital setting context of the COVID-19 pandemic. We gathered data from a survey of 89 students enrolled in a ‘Linear Algebra 1’ course including affective variables, learning strategies, social relatedness and resources considered useful. The results indicate students’ high effort and self-regulation and a high variation in affective characteristics and social relatedness. All the traditional aspects of mathematics teaching (lecture, tutorials and lecture notes) were rated as particularly useful. In addition, the videos from external resources were rated as equally useful as the teaching team’s videos. In contrast, traditional literature such as textbooks was rarely considered useful. The most useful resource rated was communication with peers, underlining the important role of social learning despite fully digital learning environments. Finally, a cluster analysis based on students’ rated usefulness of the resources led to three different user-types. Whereas the ‘digitals’ find the external digital resources very useful (videos, webpages, etc.), the ‘traditionalists’ rate the digitalized traditional resources best (lecture, tutorials, etc.). All resources receive uniformly good ratings from a third group (‘all resource users’). We reflect on our findings in light of the pandemic and describe directions for future research.</jats:p>}},
  author       = {{Kempen, Leander and Liebendörfer, Michael}},
  issn         = {{0268-3679}},
  journal      = {{Teaching Mathematics and its Applications: An International Journal of the IMA}},
  keywords     = {{Education, General Mathematics}},
  number       = {{4}},
  pages        = {{436--454}},
  publisher    = {{Oxford University Press (OUP)}},
  title        = {{{University students’ fully digital study of mathematics: an identification of student-groups via their resources usage and a characterization by personal and affective characteristics}}},
  doi          = {{10.1093/teamat/hrab020}},
  volume       = {{40}},
  year         = {{2021}},
}

@inproceedings{37487,
  author       = {{Liebendörfer, Michael and Hochmuth, Reinhard and Rode, Jana and Schukajlow, Stanislaw}},
  booktitle    = {{Interim Proceedings of the 44th Conference of the International Group for the Psychology of Mathematics Education}},
  editor       = {{Inprasitha, M. and Changsri, N. and Boonsena, N.}},
  pages        = {{198–205}},
  publisher    = {{PME}},
  title        = {{{The Mathematical Beliefs and Interest Development of Pre-Service Primary Teachers}}},
  volume       = {{3}},
  year         = {{2021}},
}

@article{37494,
  author       = {{Krapf, Regula and Liebendörfer, Michael}},
  journal      = {{mathematica didactica}},
  keywords     = {{Extrinsische Motivation}},
  number       = {{44}},
  pages        = {{1–17}},
  title        = {{{Was bewirkt die Pflichtabgabe von Übungsaufgaben in der Hochschulmathematik? – Ein empirischer Vergleich}}},
  volume       = {{2}},
  year         = {{2021}},
}

@article{35615,
  author       = {{Winkler, Michael}},
  journal      = {{Zeitschrift für Angewandte Mathematik und Physik}},
  title        = {{{Suppressing blow-up by gradient-dependent flux limitation in a planar Keller-Segel-Navier-Stokes system.}}},
  volume       = {{72}},
  year         = {{2021}},
}

@article{35614,
  author       = {{Winkler, Michael}},
  journal      = {{International Mathematics Research Notices}},
  pages        = {{8106--8152}},
  title        = {{{Can rotational fluxes impede the tendency toward spatial homogeneity in nutrient taxis (-Stokes) systems?}}},
  volume       = {{2021}},
  year         = {{2021}},
}

@article{35617,
  author       = {{Winkler, Michael}},
  journal      = {{Applied Mathematics Letters}},
  pages        = {{106785}},
  title        = {{{Boundedness in a three-dimensional Keller-Segel-Stokes system with subcritical sensitivity.}}},
  volume       = {{112}},
  year         = {{2021}},
}

@article{35613,
  author       = {{Winkler, Michael}},
  journal      = {{Transactions of the American Mathematical Society}},
  pages        = {{219--268}},
  title        = {{{Does spatial homogeneity ultimately prevail in nutrient taxis systems? A paradigm for structure support by rapid diffusion decay in an autonomous parabolic flow.}}},
  volume       = {{374}},
  year         = {{2021}},
}

@article{27099,
  abstract     = {{In our work, we have engineered low capacitance single quantum dot photodiodes as sensor devices for the optoelectronic sampling of ultrafast electric signals. By the Stark effect, a time-dependent electric signal is converted into a time-dependent shift of the transition energy. This shift is measured accurately by resonant ps laser spectroscopy with photocurrent detection. In our experiments, we sample the laser synchronous output pulse of an ultrafast CMOS circuit with high resolution. With our quantum dot sensor device, we were able to sample transients below 20 ps with a voltage resolution in the mV-range.}},
  author       = {{Widhalm, Alex and Krehs, Sebastian and Siebert, Dustin and Sharma, Nand Lal and Langer, Timo and Jonas, Björn and Reuter, Dirk and Thiede, Andreas and Förstner, Jens and Zrenner, Artur}},
  issn         = {{0003-6951}},
  journal      = {{Applied Physics Letters}},
  keywords     = {{tet_topic_qd}},
  pages        = {{181109}},
  title        = {{{Optoelectronic sampling of ultrafast electric transients with single quantum dots}}},
  doi          = {{10.1063/5.0061358}},
  volume       = {{119}},
  year         = {{2021}},
}

@inproceedings{29215,
  abstract     = {{We demonstrate a photonic-electronic analog-to-digital converter (ADC) offering a record-high acquisition bandwidth of 320 GHz. The system combines a high-speed electro-optic modulator with a Kerr comb for spectrally sliced coherent detection and is used for digitizing ultra-broadband data signals.}},
  author       = {{Fang, Dengyang and Drayß, Daniel and Lihachev, Grigory and Marin-Palomo, Pablo and Peng, Hui and Füllner, Christoph and Kuzmin, A and Liu, J and Wang, Ruoyu and Snigirev, Viacheslav and Lukashchuk, Anton and Zang, M and Kharel, P. and Witzens, Jeremy and Scheytt, J. Christoph and Freude, Wolfgang and Randel, Sebastian and Kippenberg, Tobias J. and Koos, Christian}},
  booktitle    = {{2021 European Conference on Optical Communication (ECOC)}},
  publisher    = {{IEEE}},
  title        = {{{320 GHz Analog-to-Digital Converter Exploiting Kerr Soliton Combs and Photonic-Electronic Spectral Stitching}}},
  doi          = {{10.1109/ECOC52684.2021.9606090}},
  year         = {{2021}},
}

@misc{32402,
  author       = {{Böttger, Meret Amalia Elisabeth}},
  title        = {{{IND-CCA Secure PKE Schemes - Based on Lattices}}},
  year         = {{2021}},
}

@article{37659,
  author       = {{Rösler, Margit and Voit, Michael}},
  issn         = {{0002-9939}},
  journal      = {{Proceedings of the American Mathematical Society}},
  keywords     = {{Applied Mathematics, General Mathematics}},
  number       = {{3}},
  pages        = {{1151--1163}},
  publisher    = {{American Mathematical Society (AMS)}},
  title        = {{{Positive intertwiners for Bessel functions of type B}}},
  doi          = {{10.1090/proc/15312}},
  volume       = {{149}},
  year         = {{2021}},
}

@article{29710,
  author       = {{Podworny, Susanne and Höper, Lukas and Fleischer, Yannik and Hüsing, Sven and Schulte, Carsten}},
  journal      = {{INFOS 2021–19. GI-Fachtagung Informatik und Schule}},
  publisher    = {{Gesellschaft für Informatik, Bonn}},
  title        = {{{Data Science ab Klasse 5–Konkrete Unterrichtsvorschläge für künstliche Intelligenz unplugged und Datenbewusstsein}}},
  year         = {{2021}},
}

@article{29712,
  author       = {{Höper, Lukas and Podworny, Susanne and Hüsing, Sven and Schulte, Carsten and Fleischer, Yannik and Biehler, Rolf and Frischemeier, Daniel and Malatyali, Hülya}},
  journal      = {{INFOS 2021–19. GI-Fachtagung Informatik und Schule}},
  publisher    = {{Gesellschaft für Informatik, Bonn}},
  title        = {{{Zur neuen Bedeutung von Daten in Data Science und künstlicher Intelligenz}}},
  year         = {{2021}},
}

@article{35603,
  author       = {{Tao, Youshan and Winkler, Michael}},
  journal      = {{Journal of Functional Analysis}},
  title        = {{{A fully cross-diffusive two-component evolution system: Existence and qualitative analysis via entropy-consistent thin-film-type approximation.}}},
  volume       = {{281}},
  year         = {{2021}},
}

@article{35612,
  author       = {{Wang, Yulan and Winkler, Michael and Xiang, Zhaoyin}},
  journal      = {{Science China Mathematics}},
  pages        = {{725--746}},
  title        = {{{Immediate regularization of measure-type population densities in a two-dimensional chemotaxis system with signal consumption.}}},
  volume       = {{64}},
  year         = {{2021}},
}

@article{35605,
  author       = {{Tao, Youshan and Winkler, Michael}},
  journal      = {{Communications in Mathematical Sciences}},
  pages        = {{829--849}},
  title        = {{{Global smooth solutions in a two-dimensional cross-diffusion system modeling propagation of urban crime.}}},
  volume       = {{19}},
  year         = {{2021}},
}

@article{35610,
  author       = {{Wang, Yulan and Winkler, Michael and Xiang, Zhaoyin}},
  journal      = {{Communications in Partial Differential Equations}},
  pages        = {{1058--1091}},
  title        = {{{Local energy estimates and global solvability in a  threee-dimensional chemotaxis-fluid system with prescribed signal on the boundary.}}},
  volume       = {{46}},
  year         = {{2021}},
}

@article{35611,
  author       = {{Wang, Yulan and Winkler, Michael and Xiang, Zhaoyin}},
  journal      = {{Advances in Nonlinear Analysis}},
  pages        = {{707--731}},
  title        = {{{Global solvability in a threee-dimensional Keller-Segel.Stokes system involving arbitrary superlinear logistic degradation}}},
  volume       = {{10}},
  year         = {{2021}},
}

@inproceedings{40455,
  author       = {{Blumberg, Eva and Schulze, Jan Roland and Temmen, Katrin and Schäfers, Johannes}},
  title        = {{{transMINT4.0 – Grenzen überwinden, MINT-Bildung verbinden durch außerschulische Lernorte und den Einsatz digitaler Medien. Eingeladener digital synchroner Vortrag in der MINT-Aktionswoche von MINTvernetzt }}},
  year         = {{2021}},
}