@inproceedings{52573, author = {{Dechert, Christopher and Kenig, Eugeny}}, location = {{Bochum}}, title = {{{Der Einfluss von Mikrostrukturen auf die Flüssigkeitsausbreitung in strukturierten Packungen}}}, year = {{2024}}, } @inbook{50142, author = {{Dahmen, Stephan}}, booktitle = {{Responsibilisierung }}, editor = {{Schär, Clarissa and Heite, Catrin and Magyar-Haas, Veronika}}, pages = {{101--120}}, publisher = {{Springer}}, title = {{{Der Imperativ der Biographisierung und die Ambivalenzen individueller Verantwortungszuschreibung}}}, doi = {{https://doi.org/10.1007/978-3-658-42456-5}}, year = {{2024}}, } @article{52723, abstract = {{Miller's rule is an empirical relation between the nonlinear and linear optical coefficients that applies to a large class of materials but has only been rigorously derived for the classical Lorentz model with a weak anharmonic perturbation. In this work, we extend the proof and present a detailed derivation of Miller's rule for an equivalent quantum-mechanical anharmonic oscillator. For this purpose, the classical concept of velocity-dependent damping inherent to the Lorentz model is replaced by an adiabatic switch-on of the external electric field, which allows a unified treatment of the classical and quantum-mechanical systems using identical potentials and fields. Although the dynamics of the resulting charge oscillations, and hence the induced polarizations, deviate due to the finite zero-point motion in the quantum-mechanical framework, we find that Miller's rule is nevertheless identical in both cases up to terms of first order in the anharmonicity. With a view to practical applications, especially in the context of ab initio calculations for the optical response where adiabatically switched-on fields are widely assumed, we demonstrate that a correct treatment of finite broadening parameters is essential to avoid spurious errors that may falsely suggest a violation of Miller's rule, and we illustrate this point by means of a numerical example.}}, author = {{Meyer, Maximilian Tim and Schindlmayr, Arno}}, issn = {{1361-6455}}, journal = {{Journal of Physics B: Atomic, Molecular and Optical Physics}}, publisher = {{IOP Publishing}}, title = {{{Derivation of Miller's rule for the nonlinear optical susceptibility of a quantum anharmonic oscillator}}}, doi = {{10.1088/1361-6455/ad369c}}, year = {{2024}}, } @inbook{51127, author = {{Niemann, Jan and Raneck-Kuhlmann, A. and Eickelmann, Birgit and Drossel, Kerstin and Buhl, Heike M.}}, booktitle = {{Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven}}, editor = {{Herzig, B. and Eickelmann, Birgit and Schwabl, F. and Schulze, J. and Niemann, Jan}}, publisher = {{Waxmann Verlag GmbH}}, title = {{{Determinanten und Typen phasenübergreifenden Transfers in Communities of Practice der Lehrkräftebildung}}}, year = {{2024}}, } @article{51518, abstract = {{In applications of piezoelectric actuators and sensors, the dependability and particularly the reliability throughout their lifetime are vital to manufacturers and end-users and are enabled through condition-monitoring approaches. Existing approaches often utilize impedance measurements over a range of frequencies or velocity measurements and require additional equipment or sensors, such as a laser Doppler vibrometer. Furthermore, the non-negligible effects of varying operating conditions are often unconsidered. To minimize the need for additional sensors while maintaining the dependability of piezoelectric bending actuators irrespective of varying operating conditions, an online diagnostics approach is proposed. To this end, time- and frequency-domain features are extracted from monitored current signals to reflect hairline crack development in bending actuators. For validation of applicability, the presented analysis method was evaluated on piezoelectric bending actuators subjected to accelerated lifetime tests at varying voltage amplitudes and under external damping conditions. In the presence of a crack and due to a diminished stiffness, the resonance frequency decreases and the root-mean-square amplitude of the current signal simultaneously abruptly drops during the lifetime tests. Furthermore, the piezoelectric crack surfaces clapping is reflected in higher harmonics of the current signal. Thus, time-domain features and harmonics of the current signals are sufficient to diagnose hairline cracks in the actuators.}}, author = {{Aimiyekagbon, Osarenren Kennedy and Bender, Amelie and Hemsel, Tobias and Sextro, Walter}}, issn = {{2079-9292}}, journal = {{Electronics}}, keywords = {{piezoelectric transducer, self-sensing, fault detection, diagnostics, hairline crack, condition monitoring}}, number = {{3}}, publisher = {{MDPI AG}}, title = {{{Diagnostics of Piezoelectric Bending Actuators Subjected to Varying Operating Conditions}}}, doi = {{10.3390/electronics13030521}}, volume = {{13}}, year = {{2024}}, } @inbook{46201, author = {{Ficara, Elena}}, booktitle = {{Paradox and Contradiction in Theology}}, editor = {{Rutledge, Jonathan}}, isbn = {{9781032321097}}, publisher = {{Routledge}}, title = {{{Dialectical Jesus}}}, year = {{2024}}, } @inbook{46202, author = {{Ficara, Elena}}, booktitle = {{Hegel's Logic and Politics}}, editor = {{Schäfer, Gregor}}, publisher = {{Brill}}, title = {{{Dialectics Between Logic and Politics}}}, year = {{2024}}, } @article{48081, author = {{Göddertz, Nina}}, journal = {{Zeitschrift für Pädagogikunterricht}}, title = {{{Didaktik der Sozialpädagogik – Entwicklungslinien, Diskurse und Herausforderungen. }}}, year = {{2024}}, } @article{49868, author = {{Schön, Lena and Graßl, Benjamin and Giese, Henning}}, journal = {{Steuer und Wirtschaft}}, pages = {{71--92}}, title = {{{Die Kriterien und Zusammensetzung der EU-Blacklist als Grundlage des Steueroasen-Abwehrgesetzes – Eine kritische Würdigung}}}, year = {{2024}}, } @inbook{44861, author = {{Peckhaus, Volker}}, booktitle = {{Geschichte der Tagungen am MFO, 1944 bis 1960er Jahre}}, editor = {{Remenyi, Maria and Remmert, Volker and Schappacher , Norbert }}, title = {{{Die Neuformierung der Mathematischen Logik im Nachkriegsdeutschland}}}, year = {{2024}}, }