@inproceedings{24021, abstract = {{This paper presents a broadband track-and-hold amplifier (THA) based on switched-emitter-follower (SEF) topology. The THA exhibits both large- and small-signal bandwidth exeeding 60 GHz. It achieves an effective number of bits (ENOB) of 7 bit at 34 GHz input frequency and an ENOB of >5 bit over the whole input frequency bandwidth at sampling rate of 10 GS/s. Much higher sampling rates are possible but lead to somewhat worse performance. The chip was fabricated in a 130 nm SiGe BiCMOS technology from IHP (SG13G2). It draws 78 mA from a -4.8 V supply voltage, dissipating 375 mW.}}, author = {{Wu, Liang and Weizel, Maxim and Scheytt, Christoph}}, booktitle = {{2020 IEEE International Symposium on Circuits and Systems (ISCAS)}}, isbn = {{978-1-7281-3320-1}}, issn = {{2158-1525 }}, publisher = {{IEEE}}, title = {{{Above 60 GHz Bandwidth 10 GS/s Sampling Rate Track-and-Hold Amplifier in 130 nm SiGe BiCMOS Technology}}}, doi = {{10.1109/ISCAS45731.2020.9180947}}, year = {{2020}}, } @article{24029, abstract = {{In this paper we present the system and circuit level analysis and feasibility study of applying microwave Radio Frequency Identification (RFID) systems with multipleinput multiple-output (MIMO) reader technology for tracking machining tools in multipath fading conditions of production environments. In the proposed system the MIMO reader interrogates single-antenna tags, and a high RFID frequency of 5.8 GHz is chosen to reduce the size of the reader's antenna array. According to the requirements dictated by the performed system analysis at 5.8 GHz, a low power fully integrated analog frontend (AFE) is designed and fabricated in a standard 65-nm CMOS technology for low power passive transponders. Performance of the Differential Drive Rectifier (DDR) topology as the core of the energy harvesting unit is investigated in detail. A multi-stage DDR power scavenging unit is dimensioned to provide a 1.2 V rectified voltage for 20-30 kQ load range, with a high power conversion efficiency (PCE) for high frequency and low input power level signals. The rectified voltage is then converted to a 1 V regulated voltage for the AFE and the baseband processor with 30 to 50 μW of estimated power consumption. Transistors with standard threshold voltage (VT) have been used for implementation. Measurements of the fabricated multi-stage configuration of the circuit show a maximum PCE of 68.8% at -12.46 dBm, and an input quality factor (Q-factor) of approximately 10. Amplitude-shift keying (ASK) demodulator and backscattering modulator with 80% modulation index, operating according to EPC-C1G2 protocol are applied for data transfer. The AFE consumes less than 1 μW in the reading mode. The AFE tag chip is 0.55 × 0.58 mm 2 .}}, author = {{Haddadian, Sanaz and Scheytt, Christoph}}, journal = {{IEEE Journal of Radio Frequency Identification}}, pages = {{1--1}}, title = {{{Analysis, Design and Implementation of a Fully Integrated Analog Front-End for Microwave RFIDs at 5.8 GHz to be Used with Compact MIMO Readers}}}, doi = {{10.1109/JRFID.2020.3009741}}, year = {{2020}}, } @inbook{58767, abstract = {{ Since the Tractarian ontology was only a formal presentation of our language and thinking (of everything intelligible), not metaphysics, its claims that the propositions are constructed (4.5), and that “a proposition constructs a world” (4.023) indicate the legitimacy of its reconstruction we are going to make in the present chapter. It discusses Wittgenstein’s constructivist ontology of ways. Wittgenstein’s ways are different both from modi and from tropes. In short, his ontology of ways explores the manners in which the elements of one basic ontological system can arranged to produce ontological systems of higher order. The advantage of this ontology is that it suggests an elegant solution to the problem of constructing ontological systems of new order, such as states of affairs, thinking, language, logic and works of art. }}, author = {{Milkov, Nikolay}}, booktitle = {{Wittgensteinian : Looking at the World From the Viewpoint of Wittgenstein's Philosophy}}, editor = {{Da Costa, Newton }}, isbn = {{978-3-030-27568-6}}, keywords = {{Construction, Emergence, Modality, Tractatus, Ways, Wittgenstein}}, pages = {{7--19}}, publisher = {{Springer}}, title = {{{Wittgenstein's Ways}}}, doi = {{10.1007/978-3-030-27569-3_2}}, year = {{2020}}, } @inbook{58771, author = {{Milkov, Nikolay}}, booktitle = {{ WITTGENSTEINIAN (adj.) }}, editor = {{Da Costa, Newton}}, isbn = {{978-3-030-27568-6}}, pages = {{473--486}}, publisher = {{Springer}}, title = {{{Essay in Formal Biology}}}, doi = {{10.1007/978-3-030-27569-3_25}}, year = {{2020}}, } @inbook{58776, author = {{Milkov, Nikolay}}, booktitle = {{WITTGENSTEINIAN (adj.)}}, editor = {{Da Costa, Newton}}, isbn = {{978-3-030-27568-6}}, pages = {{505--518}}, publisher = {{Springer}}, title = {{{Aesthetic Gestures: Elements of a Philosophy of Art in Frege and Wittgenstein}}}, doi = {{10.1007/978-3-030-27569-3_27}}, year = {{2020}}, } @inproceedings{24026, abstract = {{In this paper we present a new system concept for an optoelectronic wireless phased array system. Like in a conventional phased array system with optical carrier distribution, optical fibers are used to distribute the carrier from the basestation to the wireless frontends. However in contrast to prior concepts, we propose to use an optical IQ return path from the wireless frontends back to the basestation. Furthermore, we reuse the optical carrier signal for the IQ return path which allows to avoid local oscillator lasers in the wireless frontends and reduces the hardware effort significantly. The system concept allows to integrate all components of an optoelectronic wireless frontend in a single chip using silicon photonics technology.}}, author = {{Kruse, Stephan and Kress, Christian and Scheytt, Christoph and Kurz, Heiko G. and Schneider, Thomas}}, booktitle = {{GeMiC 2020 - German Microwave Conference}}, title = {{{Analysis and Simulation of a Wireless Phased Array System with Optical Carrier Distribution and an Optical IQ Return Path}}}, year = {{2020}}, } @inbook{58982, author = {{Schulte Eickholt, Swen}}, booktitle = {{Peter Weiss Jahrbuch 29}}, editor = {{Hofmann, Michael and Beise, Arnd}}, isbn = {{978-3-86110-760-6}}, pages = {{69--85}}, publisher = {{Röhrig}}, title = {{{Die Unschuld der Dinge. Die Übersetzung von Literatur in Leben und Leben in Literatur. }}}, year = {{2020}}, } @book{48912, author = {{Daniel-Söltenfuß, Desiree}}, isbn = {{978-3-948719-03-6}}, pages = {{392}}, publisher = {{Eusl}}, title = {{{Geschlecht als pädagogische Herausforderung?! Eine diskursanalytische Studie über den wissenschaftlichen Diskus zu der Frage der Bedeutung von Geschlecht für das Lehren und Lernen in der Schule}}}, year = {{2020}}, } @inproceedings{60670, abstract = {{During the eighteenth century, the Reichskammergericht or Imperial Chamber of Justice seemed to teeter almost continuously on the edge of demise. Its financial straits are generally attributed to a reluctance of the Estates to support the court by paying the fixed yearly tax, the Zieler. The Estates, it is assumed, simply weren’t interested anymore as they would rather invest in the establishment of their own territorial courts of justice. In my presentation, I would like to contest these assumptions by looking more closely at debates that took place at the Imperial Diet in the years 1719–1732. At the time, the Estates were discussing possible measures to improve or at least stabilise the yield of the Zieler to ensure the Chamber’s survival. This provoked a heated debate on the causes of the dwindling yield and ways to make Estates pay more reliably. Suggestions ranged from abolishing tax privileges, taxing new territories, simply writing off old dues to harsher enforcement. Because these debates became so profound that they threatened to incapacitate the Zieler-system altogether, analysing them will reveal critical assumptions and attitudes of Estates concerning fiscal duties. I will contend that the – apparent – inability of the Empire to maintain its fiscal capacity shouldn’t be attributed solely to a lack in interest, but mainly to severely conflicting views on the tax system’s deficiencies and ways to redress them. }}, author = {{Huybrechts, Yves}}, location = {{Online}}, title = {{{Solidarity, coercion and rebates. Dissension during fiscal reform negotiations in the Holy Roman Empire, 1719–1732: mere excuses or fundamental conflicts? }}}, year = {{2020}}, } @inbook{60917, author = {{Göbel, Kerstin and Frankemölle, Bernd}}, booktitle = {{Handbuch Stress und Kultur}}, isbn = {{9783658278250}}, publisher = {{Springer Fachmedien Wiesbaden}}, title = {{{Interkulturalität und Wohlbefinden im Schulkontext}}}, doi = {{10.1007/978-3-658-27825-0_30-1}}, year = {{2020}}, } @inbook{61915, author = {{Diekmann, Isabell}}, booktitle = {{Soziologie der Migration. Eine systematische Einführung}}, editor = {{Faist, Thomas}}, isbn = {{978-3-11-068062-1}}, pages = {{285–303}}, publisher = {{De Gruyter Oldenbourg}}, title = {{{Quantitative Methoden in der Migrationssoziologie}}}, doi = {{10.1515/9783110680638-012}}, volume = {{2}}, year = {{2020}}, } @article{61889, author = {{Diekmann, Isabell}}, isbn = {{978-3-9820349-3-5}}, issn = {{2626-3645 }}, journal = {{Perspektiven. Soziale Arbeit in der Migrationsgesellschaft und muslimische Wohlfahrtspflege}}, number = {{2}}, pages = {{37–50}}, publisher = {{Institut für Islamische Theologie, Universität Osnabrück}}, title = {{{Ähnlichkeit als Ansatz zur Verringerung von Vorurteilen und Intergruppenkonflikten in der Sozialen Arbeit? Praxisbeispiel Fanprojektarbeit }}}, volume = {{2020}}, year = {{2020}}, } @article{61853, author = {{Bartlitz, David}}, journal = {{Neue Zeitschrift für Gesellschaftsrecht (NZG) }}, number = {{3}}, pages = {{105}}, title = {{{Review of Lutter, Marcus (founder): Umwandlungsgesetz, 6. Aufl. 2019, Otto Schmidt, Köln}}}, year = {{2020}}, } @inproceedings{23479, author = {{Weizel, Maxim and Kaertner, Franz X. and Witzens, Jeremy and Scheytt, J. Christoph}}, booktitle = {{Photonic Networks; 21th ITG-Symposium}}, location = {{Online}}, pages = {{1--6}}, publisher = {{VDE}}, title = {{{Photonic Analog-to-Digital-Converters – Comparison of a MZM-Sampler with an Optoelectronic Switched-Emitter-Follower Sampler}}}, year = {{2020}}, } @inbook{45181, author = {{Vogelsang, Christoph and Borowski, Andreas and Kulgemeyer, Christoph and Riese, Josef and Buschhüter, David and Enkrott, Patrick and Kempin, Maren and Reinhold, Peter and Schecker, Horst and Schröder, Jan}}, booktitle = {{Student Learning in German Higher Education}}, editor = {{Zlatkin-Troitschanskaia, Olga and Pant, Hans Anand and Toepper, Miriam and Lautenbach, Corinna}}, isbn = {{9783658278854}}, pages = {{105--123}}, publisher = {{Springer Fachmedien Wiesbaden}}, title = {{{Development of Prospective Physics Teachers’ Professional Knowledge and Skills during a One-Semester School Internship}}}, doi = {{10.1007/978-3-658-27886-1_6}}, year = {{2020}}, } @inbook{35521, author = {{Vogelsang, Christoph and Borowski, A. and Kugelmeyer, C. and Riese, J. and Buschhüter, D. and Enkrott, P. and Kempin, M. and Reinhold, Peter and Schecker, H. and Schröder, J.}}, booktitle = {{Student Learning in German Higher Education}}, isbn = {{9783658278854}}, pages = {{105--123}}, publisher = {{Springer Fachmedien Wiesbaden}}, title = {{{Development of Prospective Physics Teachers’ Professional Knowledge and Skills during a One-Semester School Internship}}}, doi = {{10.1007/978-3-658-27886-1_6}}, year = {{2020}}, } @article{23747, author = {{Witte, Thomas and Hanemann, Stefan and Sommerfeld, Herbert and Temmen, Katrin and Fechner, Sabine}}, issn = {{0944-5846}}, journal = {{CHEMKON}}, keywords = {{digital, technology, teacher education}}, number = {{4}}, pages = {{193--198}}, title = {{{Selbstbau eines digitalen Low-Cost-Fotometers für den Chemieunterricht}}}, doi = {{10.1002/ckon.201900026}}, volume = {{27}}, year = {{2020}}, } @article{19313, abstract = {{The increasingly simulation-driven design process of ultrasonic transducers requires several reliable parameters for the description of the material behaviour. Exact results can only be achieved when a single specimen is used in the identification process, which typically is prone to the problem of low sensitivities to certain material parameters and thus high uncertainties. Therefore, a custom electrode topology for increased sensitivity is proposed for a piezoceramic disc. The thereupon conducted measurements of the electric impedance can be used as a starting point for an inverse approach where an equivalent simulation model is used to identify fitting material parameters. An optimisation strategy based on a preliminary sensitivity analysis is presented that leads to a good agreement between measurement and simulation. Furthermore, the proposed measurement procedure is able to evaluate the quality of the simulation model. Hence, different frequency-dependent damping models are presented and evaluated.}}, author = {{Feldmann, Nadine and Schulze, Veronika and Claes, Leander and Jurgelucks, Benjamin and Walther, Andrea and Henning, Bernd}}, issn = {{2196-7113}}, journal = {{tm - Technisches Messen}}, pages = {{50--55}}, title = {{{Inverse piezoelectric material parameter characterization using a single disc-shaped specimen}}}, doi = {{10.1515/teme-2020-0012}}, year = {{2020}}, } @book{64921, author = {{Mersch, Katharina Ulrike}}, isbn = {{978-3-7995-4386-6}}, pages = {{584}}, title = {{{Missachtung, Anerkennung und Kreativität: Exkommunizierte Laien im 13. Jahrhundert}}}, volume = {{65}}, year = {{2020}}, } @book{65100, abstract = {{Semiramis, die legendäre Königin von Babylon, gehörte bis in das 20. Jahrhundert hinein zu den bekanntesten und am stärksten rezipierten Gestalten der antiken Welt. Als Frau, die von Babylon aus das Großreich der Assyrer regierte und erfolgreiche Eroberungskriege führte, wurde sie in einer Vielzahl antiker Quellentexte teils mit Bewunderung, teils mit tiefer Abscheu beschrieben. Schnell avancierte sie so zum Paradigma – einerseits für das weibliche Geschlecht, andererseits für die Ausübung von Macht, aber auch für den antiken ‚Orient‘ im Allgemeinen. Semiramis findet sich in der Folge in nahezu allen Literatur- und Kunstgattungen der Spätantike, des Mittelalters, der Renaissance und der Frühen Neuzeit und erhielt so einen festen Platz im kulturellen Gedächtnis der westlichen Welt. An ihr wurden über die Epochen hinweg Weiblichkeit und Herrschaft miteinander verknüpft, Transgressionen von weiblichen Handlungsräumen thematisiert, Geschlechterordnungen und Geschlechternormen verhandelt und Handlungsspielräume für das weibliche Geschlecht reflektiert. Der Band folgt den Spuren der Semiramis durch die Jahrhunderte – von der griechischen Historiographie des 5. Jahrhunderts v.Chr. bis auf die Opernbühnen des Barock. Er kombiniert eine historisch-kritische Aufarbeitung des in den antiken Quellentexten präsentierten Semiramisbildes mit der späteren Wahrnehmung, Aneignung und Verargumentierung der Semiramis als Figur der Erinnerung.}}, author = {{Droß-Krüpe, Kerstin}}, pages = {{616}}, publisher = {{Harrassowitz}}, title = {{{Semiramis, de qua innumerabilia narrantur. Rezeption und Verargumentierung der Königin von Babylon von der Antike bis in die opera seria des Barock}}}, year = {{2020}}, }