@article{51200, abstract = {{As lightweight design gains more and more attention, time and cost-efficient joining methods such as clinching are becoming more popular. A clinch point’s quality is usually determined by ex situ destructive analyses such as microsectioning. However, these methods do not yield the detection of phenomena occurring during loading such as elastic deformations and cracks that close after unloading. Alternatively, in situ computed tomography (in situ CT) can be used to investigate the loading process of clinch points. In this paper, a method for in situ CT analysis of a single-lap shear test with clinched metal sheets is presented at the example of a clinched joint with two 2 mm thick aluminum sheets. Furthermore, the potential of this method to validate numerical simulations is shown. Since the sheets’ surfaces are locally in contact with each other, the interface between both aluminum sheets and therefore the exact contour of the joining partners is difficult to identify in CT analyses. To compensate for this, the application of copper varnish between the sheets is investigated. The best in situ CT results are achieved with both sheets treated. It showed that with this treatment, in situ CT is suitable to properly observe the three-dimensional deformation behavior and to identify the failure modes.}}, author = {{Köhler, Daniel and Kupfer, Robert and Troschitz, Juliane and Gude, Maik}}, issn = {{1996-1944}}, journal = {{Materials}}, keywords = {{General Materials Science}}, number = {{8}}, publisher = {{MDPI AG}}, title = {{{In Situ Computed Tomography—Analysis of a Single-Lap Shear Test with Clinch Points}}}, doi = {{10.3390/ma14081859}}, volume = {{14}}, year = {{2021}}, } @article{51201, abstract = {{In lightweight design, clinching is a cost-efficient solution as the joint is created through localized cold-forming of the joining parts. A clinch point’s quality is usually assessed using ex-situ destructive testing methods. These, however, are unable to detect phenomena immediately during the joining process. For instance, elastic deformations reverse and cracks close after unloading. In-situ methods such as the force-displacement evaluation are used to control a clinching process, though deviations in the clinch point geometry cannot be derived with this method. To overcome these limitations, the clinching process can be investigated using in-situ computed tomography (in-situ CT). However, a clinching tool made of steel would cause strong artefacts and a high attenuation in the CT measurement, reducing the significance of this method. Additionally, when joining parts of the same material, the sheet-sheet interface is hardly detectable. This work aims at identifying, firstly, tool materials that allow artefact-reduced CT measurements during clinching, and, secondly, radiopaque materials that can be applied between the joining parts to enhance the detectability of the sheet-sheet interface. Therefore, both CT-suitable tool materials and radiopaque materials are selected and experimentally investigated. In the clinching process, two aluminium sheets with radiopaque material in between are clinched in a single-step (rotationally symmetric joint without cut section). It is shown that e.g. silicon nitride is suited as tool material and a tin layer is suitable to enhance the detectability of the sheet-sheet interface.}}, author = {{Köhler, Daniel and Kupfer, Robert and Troschitz, Juliane and Gude, Maik}}, journal = {{ESAFORM 2021}}, publisher = {{University of Liege}}, title = {{{Clinching in In-situ CT – Experimental Study on Suitable Tool Materials}}}, doi = {{10.25518/esaform21.2781}}, year = {{2021}}, } @article{51198, author = {{Köhler, D. and Sadeghian, B. and Troschitz, J. and Kupfer, R. and Gude, M. and Brosius, A.}}, issn = {{2666-3309}}, journal = {{Journal of Advanced Joining Processes}}, keywords = {{Mechanical Engineering, Mechanics of Materials, Engineering (miscellaneous), Chemical Engineering (miscellaneous)}}, publisher = {{Elsevier BV}}, title = {{{Characterisation of lateral offsets in clinch points with computed tomography and transient dynamic analysis}}}, doi = {{10.1016/j.jajp.2021.100089}}, volume = {{5}}, year = {{2021}}, } @article{41145, author = {{Meyer-Hamme, Johannes and Krebs, Alexandra}}, journal = {{Zeitschrift für Geschichtsdidaktik}}, pages = {{180--196}}, title = {{{Historisches Lernen digital. Die neue Version der App in die Geschichte}}}, volume = {{20}}, year = {{2021}}, } @inbook{41146, author = {{Meyer-Hamme, Johannes and Körber, Andreas and Houghton, Robert}}, booktitle = {{Playing the Crusades}}, editor = {{Houghton, Robert}}, pages = {{93--110}}, title = {{{Playing as Learning and Reflecting? Theoretical Perspectives on Digital Historical Culture. London/New York, S. .}}}, volume = {{5}}, year = {{2021}}, } @inbook{41147, author = {{Meyer-Hamme, Johannes and Georgi, Viola and Lücke, Martin and Spielhaus, Riem}}, booktitle = {{ Migration und gesellschaftlicher Wandel – Förderlinie des Bundesministeriums für Bildung und Forschung}}, pages = {{16--17}}, title = {{{ Erinnerungspraktiken, Geschichtskulturen und historisches Lernen in der deutschen Migrationsgesellschaft (HiLMiG) }}}, year = {{2021}}, } @inbook{41141, author = {{Meyer-Hamme, Johannes and Hartung, Olaf and Krebs, Alexandra and Fastlabend-Vargas, Daniel}}, booktitle = {{ Geschichtsdidaktische Hochschullehre}}, editor = {{Sauer, Michael and Runge, Friederike }}, pages = {{51--66}}, title = {{{Theorie – Empirie – Reflexivität. Das Paderborner Modell geschichtsdidaktischer Betreuung schulischer Langzeitpraktika von Lehramtsstudierenden im Fach Geschichte}}}, year = {{2021}}, } @inproceedings{28095, abstract = {{Simulations are a prime performance evaluation technique for new Vehicle to Everything (V2X) methods and approaches. However, after decades of simulation-backed research, comparability and reproducibility of simulation studies is still low. In this work, we first survey road traffic simulation parameters (that is, scenarios) employed in recent scientific publications, revealing that many publications still do not adequately describe simulation scenarios to make the results comprehensible. As just one example, over 40% of the simulations using either a Manhattan Grid or Chicago Grid do not provide information about the number of lanes. At the same time, our survey reveals that, even though employed road traffic scenarios are very use case specific, there exist many commonalities. We therefore advocate basing research on use case specific variants of a set of these common standard road traffic scenarios. We accompany this recommendation with Simple Synthetic Scenarios for Sumo (SSS4S), a simple reference implementation to generate such variants.}}, author = {{Hardes, Tobias and Logan, Dalisha and Sommer, Christoph and Klingler, Florian}}, booktitle = {{13th IEEE Vehicular Networking Conference (VNC 2021)}}, isbn = {{978-1-66544-450-7}}, location = {{Virtual}}, publisher = {{IEEE}}, title = {{{Poster: Enabling Comparable and Reproducible Simulations for V2X Research}}}, doi = {{10.1109/VNC52810.2021.9644677}}, year = {{2021}}, } @inproceedings{28094, abstract = {{With recent advances in cooperation among mobile computer systems, Unmanned Aerial Vehicles (UAVs) can be expected to be operated in large numbers and become a part of daily life for a variety of use cases. UAVs are already envi- sioned to act as mobile base stations, e.g., for situations with high node densities and strong communication requirements. However, UAVs are typically imagined to be provided specifically for this purpose. In this work, we study the effects of exploiting randomly passing UAVs at an urban intersection for the communication between vehicles on the ground. We show that a UAV, while following its pri- mary mission, can support cooperative driving vehicles in a purely opportunistic fashion by collecting periodic wireless broadcasts from vehicles and propagating all collected information periodically in an aggregated format. Using simulations, we show that such an opportunistic UAV relaying approach can lead to an improvement of approx. 6 percentage points (% points) in terms of perception of other vehicles.}}, author = {{Hardes, Tobias and Boos, Clemens and Sommer, Christoph}}, title = {{{Towards opportunistic UAV relaying for smart cities}}}, doi = {{10.14279/TUJ.ECEASST.80.1126}}, year = {{2021}}, } @misc{51274, author = {{Ströhmer, Michael}}, booktitle = {{Enzyklopädie Paderpedia (https://paderpedia.de/kultur-und-wirtschaftsgeschichte-der-pader)}}, title = {{{Wirtschaftsregion Pader. Eine geschichtswissenschaftliche Skizze (1350-1950)}}}, year = {{2021}}, } @inproceedings{51246, author = {{Ströhmer, Michael}}, booktitle = {{Innovation in der Bauwirtschaft}}, editor = {{Göttmann, Frank and Seng, Eva-Maria}}, pages = {{165--293}}, title = {{{Wirtschaftliche Aspekte des internationalen Sandsteinhandels in Nordwesteuropa: Präfabrikation - Logistik - Preise (1560-1740)}}}, volume = {{5}}, year = {{2021}}, } @article{51250, author = {{Ströhmer, Michael}}, journal = {{Theologie und Glaube}}, number = {{111}}, pages = {{362--391}}, title = {{{Die Wassernot des Paderborner Jesuitenkollegs - Brunnen und Wasserkünste im konfessionspolitischen Ressourcenkonflikt (1596-1629)}}}, year = {{2021}}, } @inbook{39610, author = {{Morrien, Rita}}, booktitle = {{Arbeitsbuch Judith Kuckart. Erzählen - Theater - Tanz}}, editor = {{Canaris, Johanna and Elit, Stefan}}, isbn = {{9783631843079}}, pages = {{189--218}}, publisher = {{Peter Lang}}, title = {{{'Abgrund Mensch': Judith Kuckarts Um- und Weiterschriften der 'westfälischen Heimatdichterin' Annette von Droste-Hülshoff}}}, volume = {{9}}, year = {{2021}}, } @inbook{39613, author = {{Morrien, Rita}}, booktitle = {{Arbeitsbuch Judith Kuckart}}, editor = {{Elit, Stefan and Canaris, Johanna}}, pages = {{103--116}}, publisher = {{Peter Lang}}, title = {{{"Ich gehe durch andere Räume. Ich gehe durch eure Träume." - (Nicht-)Orte der Liebe in Judith Kuckarts "Kein Sturm, nur Wetter"}}}, volume = {{9}}, year = {{2021}}, } @inbook{51310, author = {{Haker, Christoph and Otterspeer, Lukas}}, booktitle = {{recht extrem? Dynamiken in zivilgesellschaftlichen Räumen}}, editor = {{Sehmer, Julian and Simon, Stephanie and Ten Elsen, Jennifer and Thiele, Felix}}, isbn = {{9783658325596}}, pages = {{249--273}}, publisher = {{Springer Fachmedien Wiesbaden}}, title = {{{Die epistemische Dimension der Neuen Rechten. Von einer Kritik des Wissenschafts- und Bildungsverständnisses der Neuen Rechten zu einer Selbstkritik}}}, doi = {{10.1007/978-3-658-32560-2_14}}, year = {{2021}}, } @inbook{51309, author = {{Haker, Christoph and Otterspeer, Lukas}}, booktitle = {{Dürfen Lehrer ihre Meinung sagen? Demokratie, Bildung und der Streit über das Kontroversitätsgebot}}, editor = {{Drerup, Johannes and Zulaica y Mugica, Miguel and Yacek, Douglas}}, pages = {{208--227}}, publisher = {{Kohlhammer}}, title = {{{Bedingte Autonomie, nicht Neutralität – „Neutrale Schulen Hamburg“ (AfD) und ihre Kritik}}}, year = {{2021}}, } @article{51315, abstract = {{Critique has run out of steam – this diagnosis by Bruno Latour is crucial for the “Manifesto for post-critical education” as well as for the on_education issue “The Fatique of Critique?”. With this essay, we contradict Latour's diagnosis. Latour’s polemic against critique is based firstly on a questionable diagnosis of our time and secondly on a general and programmatic critique of sociology. Against that, we bring out two main points. The first insight highlights that change is initially dependent on variations that can only arise from a negation of the existing. The second insight comes from the sociology of critique, which paradoxically sees success in the failure of critique.}}, author = {{Haker, Christoph and Otterspeer, Lukas}}, issn = {{2571-7855}}, journal = {{On Education. Journal for Research and Debate}}, number = {{9}}, title = {{{Against Latour – On the Questionable Foundations of Post-Critical Pedagogy}}}, doi = {{10.17899/on_ed.2020.9.16}}, volume = {{3}}, year = {{2021}}, } @inproceedings{51313, author = {{Haker, Christoph and Otterspeer, Lukas}}, booktitle = {{Erziehungswirklichkeiten in Zeiten von Angst und Verunsicherung}}, editor = {{Meseth, Wolfgang and Zirfas, Jörg and Thompson, Christiane and Fuchs, Thorsten}}, publisher = {{Beltz Juventa}}, title = {{{Empirische Bildungsforschung als Rechtfertigung rechtspopulistischer Angst. Zur gegenwartsdiagnostischen Verwendung von Large-Scale-Assessments}}}, year = {{2021}}, } @inproceedings{51314, author = {{Haker, Christoph and Otterspeer, Lukas}}, booktitle = {{Gewissheit. Beiträge und Debatten zum 3. Sektionskongress der Wissenssoziologie}}, editor = {{Dimbath, Oliver and Pfadenhauer, Michaela}}, publisher = {{Beltz Juventa}}, title = {{{Kritik rechtspopulistischer Gewissheiten. Für die Öffnung von Kontingenzen moderner Gesellschaftsordnungen}}}, year = {{2021}}, } @article{51311, author = {{Haker, Christoph and Otterspeer, Lukas}}, journal = {{BEHEMOTH. A Journal on Civilisation}}, pages = {{31--47}}, title = {{{Die Beweglichkeit der Kritik: zur Wechselbeziehung von Kontextualisierung und Objektivierung im digitalen Zeitalter}}}, doi = {{10.6094/BEHEMOTH.2021.14.2.1058}}, year = {{2021}}, }