@article{36005,
author = {{Berger, Thomas}},
journal = {{Systems & Control Letters}},
title = {{{Feedback control of the COVID-19 pandemic with guaranteed non-exceeding ICU capacity}}},
volume = {{160}},
year = {{2022}},
}
@article{35993,
author = {{Jaiswal, J. and Berger, Thomas and Tomar, N. K. }},
journal = {{Systems & Control Letters}},
title = {{{Partial impulse observability of linear descriptor systems}}},
volume = {{168}},
year = {{2022}},
}
@article{36028,
author = {{Berger, Thomas and Puche, M. and Schwenninger, F. L. }},
journal = {{Automatica}},
title = {{{Funnel control for a moving water tank}}},
volume = {{135}},
year = {{2022}},
}
@article{36022,
author = {{Berger, Thomas and Haller, F.}},
journal = {{Comptes Rendus Mathématique}},
pages = {{439--450}},
title = {{{On an extension of a global implicit function theorem}}},
volume = {{360}},
year = {{2022}},
}
@article{36219,
author = {{Krimphove, Dieter}},
journal = {{ArbR- Arbeitsrecht Aktuell}},
number = {{15}},
pages = {{363 ff.}},
title = {{{Der Fall Coca Cola - "Arbeitsverweigerung" des EuGH?}}},
year = {{2022}},
}
@article{33671,
abstract = {{Abstract
We demonstrate the fabrication of micron-wide tungsten silicide superconducting nanowire single-photon detectors on a silicon substrate using laser lithography. We show saturated internal detection efficiencies with wire widths ranging from 0.59 µm to 1.43 µm under illumination at 1550 nm. We demonstrate both straight wires, as well as meandered structures. Single-photon sensitivity is shown in devices up to 4 mm in length. Laser-lithographically written devices allow for fast and easy structuring of large areas while maintaining a saturated internal efficiency for wire widths around 1 µm.}},
author = {{Protte, Maximilian and Verma, Varun B and Höpker, Jan Philipp and Mirin, Richard P and Woo Nam, Sae and Bartley, Tim}},
issn = {{0953-2048}},
journal = {{Superconductor Science and Technology}},
keywords = {{Materials Chemistry, Electrical and Electronic Engineering, Metals and Alloys, Condensed Matter Physics, Ceramics and Composites}},
number = {{5}},
publisher = {{IOP Publishing}},
title = {{{Laser-lithographically written micron-wide superconducting nanowire single-photon detectors}}},
doi = {{10.1088/1361-6668/ac5338}},
volume = {{35}},
year = {{2022}},
}
@article{30342,
author = {{Lange, Nina Amelie and Höpker, Jan Philipp and Ricken, Raimund and Quiring, Viktor and Eigner, Christof and Silberhorn, Christine and Bartley, Tim}},
issn = {{2334-2536}},
journal = {{Optica}},
keywords = {{Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials}},
number = {{1}},
publisher = {{The Optical Society}},
title = {{{Cryogenic integrated spontaneous parametric down-conversion}}},
doi = {{10.1364/optica.445576}},
volume = {{9}},
year = {{2022}},
}
@techreport{36413,
author = {{Becker, Rieke and Lauert, Markus and Fischer, Jessica and Kirchhoff, Hannah and Kornbach, Alina and Januschewski, Katharina}},
title = {{{Tagungsbericht: Unverfügbarkeit – Widmung – Latenz: Das Heilige in der Kultur. Interdisziplinäre Tagung vom 16. bis 18. November 2021 an der Universität Paderborn}}},
year = {{2022}},
}
@inproceedings{36462,
abstract = {{The conduction of structure-borne sound through joints causes energy dissipation. The sound reduction index describes this energy loss as a level decrease in the particle velocity across series-connected damping elements for which the superposition principle applies. This simple model can help to develop a testing method for joints based on this characteristic energy loss. In this paper, this model is experimentally evaluated for multiple in-series clinched aluminium sheets. Samples connected by several clinch points arranged in parallel are investigated experimentally, and the results are discussed.}},
author = {{Stephan, Richard and Brosius, Alexander}},
booktitle = {{The 28th Saxon Conference on Forming Technology SFU and the 7th International Conference on Accuracy in Forming Technology ICAFT}},
keywords = {{clinching, mechanical joining, damping, model, evaluation, dynamics}},
publisher = {{MDPI}},
title = {{{Experimental Measurement Method and Evaluation of an Analytical Approach for Sound Conduction through Multiple Clinched Sheets}}},
doi = {{10.3390/engproc2022026025}},
year = {{2022}},
}
@article{32413,
abstract = {{Background. Clinching is a conventional cold forming process in which two or more sheets can be joined without auxiliary parts. A pre-forming of the parts to be joined, which is introduced by previous manufacturing steps, has an influence on the joining result. When considering the suitability for joining with regard to the formability of the materials, the influence of the preforming steps must be taken into account. The influences of strain hardening and sheet thickness on the joining properties must be investigated. In this context, a Finite Element Method (FEM) based metamodel analysis of the clinching process was carried out in [1] to investigate the robustness of the clinching process with respect to the different material pre-strains. In [2], the method was extended to the load bearing simulation.Procedure. The metamodel from preliminary work based on various FE models, which predicts the load-bearing capacity of a clinched joint influenced by pre-straining, is compared here with experimental data and the accuracy of the metamodel prediction is discussed. For this purpose an experimental procedure was further develop which allows the preforming of metal sheets from which joining specimens can be separated with a certain degree of unidirectional deformation. In the study, the procedure for preparing the joint specimens and the results of the loading tests are presented. Different possible relevant pre-strain combinations are investigated and compared with the simulation results, to validate the FE models and choose suitable metamodel.}},
author = {{Bielak, Christian Roman and Böhnke, Max and Bobbert, Mathias and Meschut, Gerson}},
issn = {{1662-9795}},
journal = {{Key Engineering Materials}},
keywords = {{Mechanical Engineering, Mechanics of Materials, General Materials Science}},
pages = {{1516--1526}},
publisher = {{Trans Tech Publications, Ltd.}},
title = {{{Experimental and Numerical Investigation on Manufacturing-Induced Pre-Strain on the Load-Bearing Capacity of Clinched Joints}}},
doi = {{10.4028/p-5d009y}},
volume = {{926}},
year = {{2022}},
}
@inproceedings{36468,
author = {{Römisch, David and Merklein, Marion}},
location = {{Örebro}},
title = {{{Experimental and Numerical Analysis of Cold Formed Multi Pin Structures Using a Multi-Acting Tool Design}}},
year = {{2022}},
}
@inproceedings{36470,
author = {{Wituschek, Simon and Lechner, Michael}},
title = {{{Versatile tool design for a tumbling self-piercing riveting process}}},
year = {{2022}},
}
@inproceedings{36473,
abstract = {{Destructive micrograph analysis (MA) is the standard method for the assessment of clinched joints. However, during the joint preparation for the MA, geometric features of the joint can change due to elastic effects and closing cracks. X-ray computed tomography (CT) is a promising alternative to investigate the joint non-destructively. However, if the
material properties of similar joining partners are the same, the CT is not able to correctly resolve surfaces in the joint that are close to or pressing onto each other. These surfaces are relevant for the determination of characteristic dimensions such as neck thickness and undercut. By placing a thin, highly radiopaque tin layer between the joining partners, the interfacial area in the reconstructed volume can be highlighted. In this work, a method for the localisation of the tin layer inside the joint as well as threshold value procedures for the outer joint contour in cross section images are investigated. The measured characteristic dimensions are compared with measured values from MA of the same samples and of samples without tin layer. In addition, possible effects of the tin layer on the joining point
characteristics as well as problems of the MA are discussed.}},
author = {{Busch, Matthias and Köhler, Daniel and Hausotte, Tino and Kupfer, Robert and Troschitz, Juliane and Gude, Maik }},
title = {{{Approach to Determine the Characteristic Dimensions of Clinched Joints by Industrial X-ray Computed Tomography}}},
year = {{2022}},
}
@article{33672,
abstract = {{Abstract
Lithium niobate is a promising platform for integrated quantum optics. In this platform, we aim to efficiently manipulate and detect quantum states by combining superconducting single photon detectors and modulators. The cryogenic operation of a superconducting single photon detector dictates the optimisation of the electro-optic modulators under the same operating conditions. To that end, we characterise a phase modulator, directional coupler, and polarisation converter at both ambient and cryogenic temperatures. The operation voltage
V
π
/
2
of these modulators increases, due to the decrease in the electro-optic effect, by 74% for the phase modulator, 84% for the directional coupler and 35% for the polarisation converter below 8.5
K
. The phase modulator preserves its broadband nature and modulates light in the characterised wavelength range. The unbiased bar state of the directional coupler changed by a wavelength shift of 85
n
m
while cooling the device down to 5
K
. The polarisation converter uses periodic poling to phasematch the two orthogonal polarisations. The phasematched wavelength of the utilised poling changes by 112
n
m
when cooling to 5
K
.}},
author = {{Thiele, Frederik and vom Bruch, Felix and Brockmeier, Julian and Protte, Maximilian and Hummel, Thomas and Ricken, Raimund and Quiring, Viktor and Lengeling, Sebastian and Herrmann, Harald and Eigner, Christof and Silberhorn, Christine and Bartley, Tim}},
issn = {{2515-7647}},
journal = {{Journal of Physics: Photonics}},
keywords = {{Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials}},
number = {{3}},
publisher = {{IOP Publishing}},
title = {{{Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides}}},
doi = {{10.1088/2515-7647/ac6c63}},
volume = {{4}},
year = {{2022}},
}
@article{33673,
abstract = {{ Superconducting Nanowire Single Photon Detectors (SNSPDs) have become an integral part of quantum optics in recent years because of their high performance in single photon detection. We present a method to replace the electrical input by supplying the required bias current via the photocurrent of a photodiode situated on the cold stage of the cryostat. Light is guided to the bias photodiode through an optical fiber, which enables a lower thermal conduction and galvanic isolation between room temperature and the cold stage. We show that an off-the-shelf InGaAs–InP photodiode exhibits a responsivity of at least 0.55 A/W at 0.8 K. Using this device to bias an SNSPD, we characterize the count rate dependent on the optical power incident on the photodiode. This configuration of the SNSPD and photodiode shows an expected plateau in the single photon count rate with an optical bias power on the photodiode above 6.8 µW. Furthermore, we compare the same detector under both optical and electrical bias, and show there is no significant changes in performance. This has the advantage of avoiding an electrical input cable, which reduces the latent heat load by a factor of 100 and, in principle, allows for low loss RF current supply at the cold stage. }},
author = {{Thiele, Frederik and Hummel, Thomas and Protte, Maximilian and Bartley, Tim}},
issn = {{2378-0967}},
journal = {{APL Photonics}},
keywords = {{Computer Networks and Communications, Atomic and Molecular Physics, and Optics}},
number = {{8}},
publisher = {{AIP Publishing}},
title = {{{Opto-electronic bias of a superconducting nanowire single photon detector using a cryogenic photodiode}}},
doi = {{10.1063/5.0097506}},
volume = {{7}},
year = {{2022}},
}
@article{36524,
abstract = {{How can Knowledge In/Equity be addressed in qualitative research by taking the idea of Open Science into account? Two projects from the Open Science Fellows Programme by Wikimedia Deutschland will be used to illustrate how Open Science practices can succeed in qualitative research, thereby reducing In/Equity. In this context, In/Equity is considered as a fair and equal representation of people, their knowledge and insights and comprehends questions about how epistemic, structural, institutional and personal biases generate and shape knowledge as guidance. Three questions guide this approach: firstly, what do we understand by In/Equity in the context of knowledge production in these projects? Secondly, who will be involved in knowledge generation and to what extent will they be valued or unvalued? Thirdly, how can data be made accessible for re-use to enable true participation and sharing?}},
author = {{Steinhardt, Isabel and Kruschick, Felicitas}},
issn = {{2367-7163}},
journal = {{Research Ideas and Outcomes}},
keywords = {{Open Science, Knowledge Equity, Qualitative Methods}},
pages = {{e86387}},
publisher = {{Pensoft Publishers}},
title = {{{Knowledge Equity and Open Science in qualitative research – Practical research considerations}}},
doi = {{10.3897/rio.8.e86387}},
volume = {{8}},
year = {{2022}},
}
@article{36538,
abstract = {{Der Beitrag beschäftigt sich mit dem Gebrauch von sogenannten Open Educational Resources (OER) innerhalb der deutschsprachigen Soziologie. OER sind Lehr-und Lernmaterialien, die öffent-lich und frei von Kosten zugänglich sind sowie unter einer offenen Lizenz stehen, die es erlaubt, das Material frei zu nutzen, zu vervielfältigen und zu bearbeiten. Um diese Form der Bereitstellung von Lehr-und Lernmaterial zu fördern, sind im deutschen Sprachraum in den letzten Jahren verschie-dene digitale Infrastrukturen entstanden, die an einzelnen Hochschulstandorten, aber auch hochschulübergreifend Lehrenden zur Verfügung stehen, um dort ihr Material zu veröffentlichen. Es wurden 37 dieser Repositorien untersucht. Darüber hinaus wurde auch die Videoplattform YouTube nach soziologischem Lehr-und Lernmaterial durchforstet. Der Beitrag stellt den Zeitverlauf und die Akteur:innen der OER-Veröffentlichungen dar. Anschließend soll mithilfe eines praxistheoretischen Vokabulars die Lehre innerhalb der Soziologie aufgeschlüsselt und ein möglicher Bezug zu den empirischen Ergebnissen hergestellt werden.}},
author = {{Hiebl, Johannes and Steinhardt, Isabel and Bigos, Michael}},
issn = {{2199-8825}},
journal = {{die hochschule}},
keywords = {{Soziologie, Praxistheorie, Repositorien, Open Educational Resources, OER}},
number = {{8}},
pages = {{379--394}},
title = {{{Die (Un-)Sichtbarkeit von (offenen) Bildungsmaterialien in der Soziologie}}},
doi = {{10.3278/HSL2227W}},
year = {{2022}},
}
@inbook{36526,
abstract = {{Der Beitrag geht der Frage nach, welchen Herausforderungen Lehrende durch die digitale Lehre im ersten Corona-Semester 2020 begegnet sind und welche Strategien sie für deren Bewältigung gewählt haben. Als Datengrundlage dienendazu sechs autoethnographische Stories, entstanden im Projekt AEDiL. Diese haben sich als wertvolles Material erwiesen, um unmittelbare Einblicke in das Lehrhandeln und die -planung zu erhalten und die weiterführende Analyse zu ermöglichen. Dabei offenbarte sich der gemeinsame Anspruch der studierenden-zentrierten Lehre als wiederkehrendes Muster. Die mehrstufige Analyse legt offen, wie Lehrpersonen mit den Themen Beziehungsaufbau, Schaffung eines (digitalen) Raums sowie Sicherheit für Studierende umgehen und sich daraus Handlungsmuster entwickeln.}},
author = {{Ternes, Doris and Bernhard, Nadine and Gewinner, Irina and Goller, Antje and Lohner, David and König, Karsten and Röwert, Ronny and Steinhardt, Isabel and Thielsch, Angelika}},
booktitle = {{Hochschulen in der Pandemie. Impulse für eine nachhaltige Entwicklung von Studium und Lehre}},
editor = {{Angenent, Holger and Petri, Jörg and Zimenkova, Tatiana}},
isbn = {{ 978-3-8376-5984-9}},
pages = {{400--414}},
publisher = {{transkript}},
title = {{{Dem eigenen Anspruch auf der Spur}}},
doi = {{10.5445/IR/1000145819 }},
year = {{2022}},
}
@misc{47538,
author = {{Lammer, Christina}},
keywords = {{Kathleen Vereecken, Kinder- und Jugendliteratur, Krieg, Belgien}},
publisher = {{www.kibum.de (Thomas Boyken und Jörn Brüggemann)}},
title = {{{Die Kraft der Bilder. Funktionen neuer Illustrationen bei Übersetzungen. Kathleen Vereecken – Alles komt goed, altijd (2018) | Alles wird gut, immer (2021)}}},
year = {{2022}},
}
@misc{36109,
author = {{Knorr, Lukas and Schlosser, Florian and Meschede, Henning}},
publisher = {{17th sdewes conference}},
title = {{{Assessment of Energy Efficiency and Flexibility Measures in Electrified Process Heat Generation Based on Simulations in the Animal Feed Industry}}},
year = {{2022}},
}