@article{35527,
  author       = {{Breuer, Judith and Vogelsang, Christoph and Reinhold, Peter}},
  journal      = {{PhyDid A - Physik und Didaktik in Schule und Hochschule}},
  title        = {{{Implementation und Nutzung von Unterrichtsmaterialien im schulischen Unterricht – Eine Bestandsaufnahme der mathematisch-naturwissenschaftlichen Fächer}}},
  year         = {{2020}},
}

@article{24743,
  author       = {{Stender, Jana and Vogelsang, Christoph and Watson, Christina and Schaper, Niclas}},
  isbn         = {{978-3-8340-2103-8}},
  journal      = {{Jahrbuch für Allgemeine Didaktik (JfAD) }},
  pages        = {{18--39}},
  publisher    = {{Schneider Verlag Hohengehren}},
  title        = {{{Reflexion von (eigenem oder fremdem) Klassenführungsverhalten angehender Lehrpersonen. Eine Untersuchung im Kontext von Unterrichtssimulationen im Lehramtsstudium.}}},
  year         = {{2020}},
}

@article{24744,
  abstract     = {{<jats:p> Zusammenfassung. Längsschnittstudien, die das bildungswissenschaftliche Wissen als Teil der professionellen Kompetenz angehender Lehrkräfte über mehr als zwei Messzeitpunkte erfassen und den Einfluss individueller Eingangsvoraussetzungen auf die Wissensentwicklung untersuchen, stellen nach wie vor ein Forschungsdesiderat dar. Bisherige Studien liefern erste Hinweise darauf, dass individuelle Eingangsvoraussetzungen wie die Abiturnote, pädagogische Vorerfahrungen und Berufswahlmotive im Zusammenhang mit der Wissensentwicklung stehen und günstige Eingangsvoraussetzungen den Entwicklungsverlauf fördern können. Bislang ist unklar, wie sich das Wissen über den gesamten Studienverlauf in den Bachelor-/Master-Strukturen entwickelt. Des Weiteren ist auch unklar, inwieweit bestimmte Eingangsvoraussetzungen langfristige Entwicklungsverläufe erklären können. In der vorliegenden Studie wurden die Daten von 276 Studierenden, dessen Wissen zu fünf Messzeitpunkten erhoben wurde, mit Hilfe latenter Wachstumskurvenmodelle ausgewertet. Die Ergebnisse bestätigten einen Zuwachs des bildungswissenschaftlichen Wissens über den gesamten Studienverlauf. Den größten Wissenszuwachs erfuhren die Studierenden in den ersten zwei Semestern ihres Bachelorstudiums und beim Übergang in das Masterstudium. Des Weiteren konnte der Einfluss von individuellen kognitiven und motivationalen Eingangsvoraussetzungen auf den Leistungszuwachs bestätigt werden. So zeigte sich, dass Studierende, die eine bessere Abiturnote aufwiesen und bereits über eine unterrichtsnahe pädagogische Vorerfahrung verfügten, höhere Wissenszuwächse im Vergleich zu ihren Kommilitoninnen und Kommilitonen erfuhren, die einen schlechteren Abiturnotendurchschnitt hatten. Ebenfalls begünstigte das Motiv „mit Kindern und Jugendlichen arbeiten zu wollen“ die Wissensentwicklung. Die Ergebnisse können insbesondere für die Beratung genutzt werden, um die Motivlagen von Studierenden zu erfassen und sie dafür sensibel zu machen, welche Motivkonstellationen für einen erfolgreichen Studienverlauf günstig erscheinen. </jats:p>}},
  author       = {{Watson, Christina and Stender, Jana and Schaper, Niclas}},
  issn         = {{1010-0652}},
  journal      = {{Zeitschrift für Pädagogische Psychologie}},
  pages        = {{1--16}},
  title        = {{{Kompetenzentwicklung im bildungswissenschaftlichen Studium: Der Einfluss                individueller Voraussetzungen auf die Entwicklung des bildungswissenschaftlichen                Wissens angehender Lehrkräfte}}},
  doi          = {{10.1024/1010-0652/a000288}},
  year         = {{2020}},
}

@inbook{35654,
  author       = {{Huwer, Johannes and Thyssen, Christoph and Vogelsang, Christoph}},
  booktitle    = {{Digitale Innovationen und Kompetenzen in der Lehramtsausbildung}},
  editor       = {{Gryl, Inga and Schacht, Florian and Beißwenger, Michael and Bullzek, Björn}},
  pages        = {{353--367}},
  publisher    = {{Universitätsverlag Rhein-Ruhr}},
  title        = {{{Lehre:digital – Erwerb digitaler Lehrkompetenz im fächerübergreifenden Kontext Chemie, Biologie und Physik}}},
  year         = {{2020}},
}

@inbook{35666,
  author       = {{Vogelsang, Christoph and Al-Kabbani, Daniel}},
  booktitle    = {{Hochschuldidaktik als Akteurin der Hochschulentwicklung}},
  editor       = {{Heuchemer, Sylvia and van Treeck, Timo and Szczyrba, Birgit}},
  pages        = {{113--118}},
  publisher    = {{wbv}},
  title        = {{{"Jetzt auch noch Werte vermitteln?" - Potentiale und Grenzen der Adaption schuldidaktischer Werkzeuge in der Hochschuldidaktik zur Integration von Wertefragen in die Hochschullehre}}},
  year         = {{2020}},
}

@article{34092,
  abstract     = {{<jats:p>Block copolymer (BCP) self-assembly is a promising tool for next generation lithography as microphase separated polymer domains in thin films can act as templates for surface nanopatterning with sub-20 nm features. The replicated patterns can, however, only be as precise as their templates. Thus, the investigation of the morphology of polymer domains is of great importance. Commonly used analytical techniques (neutron scattering, scanning force microscopy) either lack spatial information or nanoscale resolution. Using advanced analytical (scanning) transmission electron microscopy ((S)TEM), we provide real space information on polymer domain morphology and interfaces between polystyrene (PS) and polymethylmethacrylate (PMMA) in cylinder- and lamellae-forming BCPs at highest resolution. This allows us to correlate the internal structure of polymer domains with line edge roughnesses, interface widths and domain sizes. STEM is employed for high-resolution imaging, electron energy loss spectroscopy and energy filtered TEM (EFTEM) spectroscopic imaging for material identification and EFTEM thickness mapping for visualisation of material densities at defects. The volume fraction of non-phase separated polymer species can be analysed by EFTEM. These methods give new insights into the morphology of polymer domains the exact knowledge of which will allow to improve pattern quality for nanolithography.</jats:p>}},
  author       = {{Bürger, Julius and Kunnathully, Vinay and Kool, Daniel and Lindner, Jörg and Brassat, Katharina}},
  issn         = {{2079-4991}},
  journal      = {{Nanomaterials}},
  keywords     = {{General Materials Science, General Chemical Engineering}},
  number       = {{1}},
  publisher    = {{MDPI AG}},
  title        = {{{Characterisation of the PS-PMMA Interfaces in Microphase Separated Block Copolymer Thin Films by Analytical (S)TEM}}},
  doi          = {{10.3390/nano10010141}},
  volume       = {{10}},
  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}},
}

@article{34091,
  author       = {{Kunnathully, Vinay S. and Riedl, Thomas and Trapp, Alexander and Langer, Timo and Reuter, Dirk and Lindner, Jörg}},
  issn         = {{0022-0248}},
  journal      = {{Journal of Crystal Growth}},
  keywords     = {{Materials Chemistry, Inorganic Chemistry, Condensed Matter Physics}},
  publisher    = {{Elsevier BV}},
  title        = {{{InAs heteroepitaxy on nanopillar-patterned GaAs (111)A}}},
  doi          = {{10.1016/j.jcrysgro.2020.125597}},
  volume       = {{537}},
  year         = {{2020}},
}

@article{34090,
  author       = {{Riedl, Thomas and Lindner, Jörg}},
  issn         = {{0038-1098}},
  journal      = {{Solid State Communications}},
  keywords     = {{Materials Chemistry, Condensed Matter Physics, General Chemistry}},
  publisher    = {{Elsevier BV}},
  title        = {{{Applicability of molecular statics simulation to partial dislocations in GaAs}}},
  doi          = {{10.1016/j.ssc.2020.113927}},
  volume       = {{314-315}},
  year         = {{2020}},
}

@article{34089,
  author       = {{Riedl, Thomas and Lindner, Jörg}},
  issn         = {{0038-1098}},
  journal      = {{Solid State Communications}},
  keywords     = {{Materials Chemistry, Condensed Matter Physics, General Chemistry}},
  publisher    = {{Elsevier BV}},
  title        = {{{Applicability of molecular statics simulation to partial dislocations in GaAs}}},
  doi          = {{10.1016/j.ssc.2020.113927}},
  volume       = {{314-315}},
  year         = {{2020}},
}

@inproceedings{24020,
  abstract     = {{Novel analog-to-digital converter (ADC) architectures are motivated by the demand for rising sampling rates and effective number of bits (ENOB). The main limitation on ENOB in purely electrical ADCs lies in the relatively high jitter of oscillators, in the order of a few tens of fs for state-of-the-art components. When compared to the extremely low jitter obtained with best-in-class Ti:sapphire mode-locked lasers (MLL), in the attosecond range, it is apparent that a mixed electrical-optical architecture could significantly improve the converters' ENOB. We model and analyze the ENOB limitations arising from optical sources in optically enabled, spectrally sliced ADCs, after discussing the system architecture and implementation details. The phase noise of the optical carrier, serving for electro-optic signal transduction, is shown not to propagate to the reconstructed digitized signal and therefore not to represent a fundamental limit. The optical phase noise of the MLL used to generate reference tones for individual slices also does not fundamentally impact the converted signal, so long as it remains correlated among all the comb lines. On the other hand, the timing jitter of the MLL, as also reflected in its RF linewidth, is fundamentally limiting the ADC performance, since it is directly mapped as jitter to the converted signal. The hybrid nature of a photonically enabled, spectrally sliced ADC implies the utilization of a number of reduced bandwidth electrical ADCs to convert parallel slices, resulting in the propagation of jitter from the electrical oscillator supplying their clock. Due to the reduced sampling rate of the electrical ADCs, as compared to the overall system, the overall noise performance of the presented architecture is substantially improved with respect to a fully electrical ADC.}},
  author       = {{Zazzi, Andrea and Müller, Juliana and Gudyriev, Sergiy and Marin-Palomo, Pablo and Fang, Dengyang and Scheytt, Christoph and Koos, Christian and Witzens, Jeremy}},
  booktitle    = {{21. ITG-Fachtagung Photonische Netze}},
  publisher    = {{VDE-Verlag}},
  title        = {{{Mode-locked laser timing jitter limitation in optically enabled frequency-sliced ADCs}}},
  year         = {{2020}},
}

@article{24025,
  abstract     = {{The effect of phase noise introduced by optical sources in spectrally-sliced optically enabled DACs and ADCs is modeled and analyzed in detail. In both data converter architectures, a mode-locked laser is assumed to provide an optical comb whose lines are used to either synthesize or analyze individual spectral slices. While the optical phase noise of the central MLL line as well as of other optical carriers used in the analyzed system architectures have a minor impact on the system performance, the RF phase noise of the MLL fundamentally limits it. In particular, the corresponding jitter of the MLL pulse train is transferred almost one-to-one to the system-level timing jitter of the data converters. While MLL phase noise can in principle be tracked and removed by electronic signal processing, this results in electric oscillator phase noise replacing the MLL jitter and is not conducive in systems leveraging the ultra-low jitter of low-noise mode-locked lasers. Precise analytical models are derived and validated by detailed numerical simulations.}},
  author       = {{Zazzi, Andrea and Müller, Juliana and Gudyriev, Sergiy and Marin-Palomo, Pablo and Fang, Dengyang and Scheytt, Christoph and Koos, Christian and Witzens, Jeremy}},
  journal      = {{Opt. Express}},
  title        = {{{Fundamental limitations of spectrally-sliced optically enabled data converters arising from MLL timing jitter}}},
  doi          = {{10.1364/OE.382832}},
  volume       = {{28}},
  year         = {{2020}},
}

@inproceedings{24028,
  abstract     = {{A 28 Gbps NRZ bang-bang clock and data recovery (CDR) chip for 100G PSM4 is presented. It exhibits an adaptable loop filter transfer function with independently tunable proportional and integral parameters. This allows to optimize the jitter transfer, jitter tolerance, and locking range of the CDR according to system requirements. The CDR represents a key component for a single-chip 8-channel electronic-photonic PSM4 transceiver. A CDR chip was manufactured in a 0.25 μm monolithic photonic BiCMOS technology. The core chip area is 0.51 mm 2 and it dissipates 330 mW from 2.5 V and 3.3 V power supplies.}},
  author       = {{Iftekhar, Mohammed and Gudyriev, Sergiy and Scheytt, Christoph}},
  booktitle    = {{2020 IEEE 20th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF)}},
  publisher    = {{IEEE}},
  title        = {{{28 Gbps Bang-Bang CDR for 100G PSM4 with Independently Tunable Proportional and Integral Parameters of the Loop Filter in 0.25 µm Photonic BiCMOS Technology}}},
  doi          = {{10.1109/SIRF46766.2020.9040190}},
  year         = {{2020}},
}

@article{16301,
  author       = {{Atorf, Bernhard and Mühlenbernd, Holger and Zentgraf, Thomas and Kitzerow, Heinz-Siegfried}},
  issn         = {{1094-4087}},
  journal      = {{Optics Express}},
  number       = {{6}},
  pages        = {{8898--8908}},
  title        = {{{All-optical switching of a dye-doped liquid crystal plasmonic metasurface}}},
  doi          = {{10.1364/oe.383877}},
  volume       = {{28}},
  year         = {{2020}},
}

@inproceedings{24024,
  abstract     = {{Recently it has been demonstrated that an optoelectronic phase-locked loop (OEPLL) using a mode-locked laser as a reference oscillator achieves significantly lower phase noise than conventional electronic frequency synthesizers. In this paper a concept for an OEPLL-based frequency synthesizer is presented and it is investigated how it can be used as a local oscillator (LO) for THz transceivers in order to improve the signal quality in THz wireless communications. The concept of the OEPLL is presented and it's measured phase noise is compared to the phase noise of a laboratory-grade electronic frequency synthesizer. The measured phase noise spectra of both synthesizers at 10 GHz are then used to model LO phase noise at 320 GHz. Based on models of generic zero-IF transmit and receive frontends, THz signals with different modulation formats and Baud rates are simulated at system level using the modeled LO phase noise for the two LO approaches. Finally, the results are compared.}},
  author       = {{Scheytt, Christoph and Wrana, Dominik and Bahmanian, Meysam and Kallfass, Ingmar}},
  booktitle    = {{2020 Third International Workshop on Mobile Terahertz Systems (IWMTS)}},
  location     = {{Essen, Germany }},
  title        = {{{Ultra-Low Phase Noise Frequency Synthesis for THz Communications Using Optoelectronic PLLs}}},
  doi          = {{10.1109/IWMTS49292.2020.9166347}},
  year         = {{2020}},
}

@phdthesis{35956,
  author       = {{Schwabl, Franziska}},
  publisher    = {{Eusl-Verlagsgesellschaft mbH}},
  title        = {{{Inszenierungen im digitalen Bild. Eine Rekonstruktion der Selfie-Praktiken Jugendlicher mittels der Dokumentarischen Bildinterpretation.}}},
  year         = {{2020}},
}

@article{35968,
  author       = {{Schwabl, Franziska}},
  journal      = {{bwp@Berufs-und Wirtschaftspädagogik – online}},
  pages        = {{1--24}},
  title        = {{{Fotografien als Zugang zur Lebenswelt Jugendlicher. Eine Analyse der digitalen Inszenierungspraktiken Jugendlicher im berufsschulischen Übergangssystem.}}},
  volume       = {{38}},
  year         = {{2020}},
}

@inproceedings{13226,
  abstract     = {{The canonical problem for the class Quantum Merlin-Arthur (QMA) is that of
estimating ground state energies of local Hamiltonians. Perhaps surprisingly,
[Ambainis, CCC 2014] showed that the related, but arguably more natural,
problem of simulating local measurements on ground states of local Hamiltonians
(APX-SIM) is likely harder than QMA. Indeed, [Ambainis, CCC 2014] showed that
APX-SIM is P^QMA[log]-complete, for P^QMA[log] the class of languages decidable
by a P machine making a logarithmic number of adaptive queries to a QMA oracle.
In this work, we show that APX-SIM is P^QMA[log]-complete even when restricted
to more physical Hamiltonians, obtaining as intermediate steps a variety of
related complexity-theoretic results.
  We first give a sequence of results which together yield P^QMA[log]-hardness
for APX-SIM on well-motivated Hamiltonians: (1) We show that for NP, StoqMA,
and QMA oracles, a logarithmic number of adaptive queries is equivalent to
polynomially many parallel queries. These equalities simplify the proofs of our
subsequent results. (2) Next, we show that the hardness of APX-SIM is preserved
under Hamiltonian simulations (a la [Cubitt, Montanaro, Piddock, 2017]). As a
byproduct, we obtain a full complexity classification of APX-SIM, showing it is
complete for P, P^||NP, P^||StoqMA, or P^||QMA depending on the Hamiltonians
employed. (3) Leveraging the above, we show that APX-SIM is P^QMA[log]-complete
for any family of Hamiltonians which can efficiently simulate spatially sparse
Hamiltonians, including physically motivated models such as the 2D Heisenberg
model.
  Our second focus considers 1D systems: We show that APX-SIM remains
P^QMA[log]-complete even for local Hamiltonians on a 1D line of 8-dimensional
qudits. This uses a number of ideas from above, along with replacing the "query
Hamiltonian" of [Ambainis, CCC 2014] with a new "sifter" construction.}},
  author       = {{Gharibian, Sevag and Piddock, Stephen and Yirka, Justin}},
  booktitle    = {{Proceedings of the 37th Symposium on Theoretical Aspects of Computer Science (STACS 2020)}},
  pages        = {{38}},
  title        = {{{Oracle complexity classes and local measurements on physical  Hamiltonians}}},
  year         = {{2020}},
}

@article{22056,
  author       = {{Spychala, K. J. and Mackwitz, P. and Rüsing, Michael and Widhalm, A. and Berth, Gerhard and Silberhorn, Christine and Zrenner, Artur}},
  issn         = {{0021-8979}},
  journal      = {{Journal of Applied Physics}},
  title        = {{{Nonlinear focal mapping of ferroelectric domain walls in LiNbO3: Analysis of the SHG microscopy contrast mechanism}}},
  doi          = {{10.1063/5.0025284}},
  year         = {{2020}},
}