@article{53075, abstract = {{Polycyclic aromatic hydrocarbons (PAHs) are formed in fuel-rich and sooting hydrocarbon flames. These compounds and smaller aromatic flame constituents, such as benzene, toluene and naphthalene can be detected by flame-sampling molecular beam mass spectrometry (MBMS). They are readily ionized by photoionization with UV light, either in resonant or non-resonant ionization processes. The multiphoton ionization of benzene, toluene, and styrene with MBMS detection was investigated as a function of laser power and wavelength and the quantitative relation between ion signal and mole fractions in the flames was established. These measurements were prerequisites for the measurement of quantitative mole fraction profiles of these species in flames of various fuels. In addition, the measurements provide relative mole fraction profiles of various other aromatic flame species. The results are compared to measurements of aromatics in butadiene, propyne, and allene flames by single-photon ionization with vacuum ultraviolet radiation from a synchrotron source and other literature data. (c) 2023 Published by Elsevier Inc. on behalf of The Combustion Institute.}}, author = {{Kasper, Tina and Hansen, Nils}}, journal = {{Combustion and Flame}}, number = {{1}}, title = {{{Resonance enhanced multiphoton ionization detection of aromatics formation in fuel-rich flames}}}, volume = {{257}}, year = {{2023}}, } @article{36812, author = {{Apazeller, Sascha and Gonchikzhapov, Munko and Nanjaiah, Monika and Kasper, Tina and Wlokas, Irenäus and Wiggers, Hartmut and Schulz, Christof}}, issn = {{1540-7489}}, journal = {{Proceedings of the Combustion Institute}}, keywords = {{Physical and Theoretical Chemistry, Mechanical Engineering, General Chemical Engineering}}, publisher = {{Elsevier BV}}, title = {{{A new dual matrix burner for one-dimensional investigation of aerosol flames}}}, doi = {{10.1016/j.proci.2022.07.166}}, year = {{2023}}, } @article{53074, author = {{Kasper, Tina and Hansen, Nils}}, issn = {{0010-2180}}, journal = {{Combustion and Flame}}, keywords = {{General Physics and Astronomy, Energy Engineering and Power Technology, Fuel Technology, General Chemical Engineering, General Chemistry}}, publisher = {{Elsevier BV}}, title = {{{Resonance enhanced multiphoton ionization detection of aromatics formation in fuel-rich flames}}}, doi = {{10.1016/j.combustflame.2023.112820}}, volume = {{257}}, year = {{2023}}, } @article{44215, abstract = {{In der zukünftigen Produktion werden der Aufbau und die Entwicklung der Fähigkeiten der Mitarbeiter:innen ein entscheidender Wettbewerbsvorteil von Unternehmen. In menschenzentrierten Montagesystemen passen sich die Mitarbeiter:innen auf der Grundlage von Lernprozessen an neue und sich ändernde Aufgaben an. Dazu muss der Bezug zu den Fähigkeiten der Mitarbeiter:innen im Zuge der integrierten Produkt-und Prozessentwicklung vorgesehen werden. Daher wurde eine Methodik entwickelt, die diese Fähigkeiten explizit abbildet und sie sowohl in der Entwicklung als auch in der kurzfristigen Personaleinsatzplanung bei der Aufgabenzuordnung berücksichtigt. Zur Anwendung wurde die Methodik prototypisch in einem Software-Werkzeug umgesetzt und in Kombination mit einer diskreten ereignisorientierten Simulation erprobt.}}, author = {{Gräßler, Iris and Roesmann, Daniel and Pottebaum, Jens}}, issn = {{2511-0896}}, journal = {{Zeitschrift für wirtschaftlichen Fabrikbetrieb}}, keywords = {{Management Science and Operations Research, Strategy and Management, General Engineering}}, number = {{3}}, pages = {{149--152}}, publisher = {{Walter de Gruyter GmbH}}, title = {{{Human Factors in der integrierten Produktentwicklung}}}, doi = {{10.1515/zwf-2023-1029}}, volume = {{118}}, year = {{2023}}, } @inproceedings{51218, abstract = {{Polymer composites represent the industry standard in injection molding for the production of plastic components with increased requirements in terms of heat resistance and stiffness. In the field of laser sintering (LS), these materials are less common so far. In order to extend the available material variety for the LS process, new ceramic-filled Polyamide 613 powders are investigated within the scope of this work. Here, the resulting properties from two different powder production methods are compared. One filled powder is produced by dry blending and the other powder with the same filler and filling ratio is produced by encapsulating the filler particles inside the polymer particles within the dissolution-precipitation process. It was found that encapsulating the filler particles can provide certain benefits for the processability, for example an improved powder flowability or better filler dispersion. However, encapsulating the filler also alters the thermal properties of the precipitated powder. }}, author = {{Kletetzka, Ivo and Neitzel, Fabian and Schmid, Hans-Joachim}}, booktitle = {{Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium}}, editor = {{Beaman, Joseph}}, keywords = {{Additive Manufacturing, Laser Sintering, Filled Materials, Composites, Polyamide 613}}, location = {{Austin}}, title = {{{Assessing the Impact of the Powder Production Method on Ceramic-filled Polyamide Composites made by Laser Sintering}}}, doi = {{https://doi.org/10.26153/tsw/50931}}, year = {{2023}}, } @inproceedings{46862, abstract = {{The high flammability of components manufactured by laser sintering (LS) using standard polyamide 12 (PA12) powder still severely restricts their use in industries such as electronics, aviation, and transportation. A key factor for the further establishment of LS is the expansion of the material portfolio with, for example, refreshable and halogen-free flame-retardant (FR) powder materials. Accordingly, various halogen-free FRs are investigated in this work and evaluated with respect to their use in LS. First, their decomposition behavior and mode of action are examined. Subsequently, the additives are dry blended with PA12 to investigate properties relevant for LS, such as particle morphology, thermal behavior and melt viscosity. Afterwards, test specimens for UL94 vertical flame-retardancy tests are produced by processing the dry blends on an EOS P3 LS system. Finally, the process stability of the process-aged powder blends is investigated by again examining the thermal behavior and melt viscosity.}}, author = {{Neitzel, Fabian and Kletetzka, Ivo and Schmid, Hans-Joachim}}, booktitle = {{Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium}}, editor = {{Beaman, Joseph}}, keywords = {{Additive Manufacturing, Laser Sintering, Flame Retardant, Polyamide 12}}, location = {{Austin}}, title = {{{Halogen-Free Flame Retardant Powder Materials for Laser Sintering: Evaluation and Process Stability Analysis}}}, doi = {{https://doi.org/10.26153/tsw/50926}}, year = {{2023}}, } @article{53166, abstract = {{The Knoevenagel reaction is a classic reaction in organic chemistry for the formation of C-C bonds. In this study, various catalytic monomers for Knoevenagel reactions were synthesized and polymerized via photolithography to form polymeric gel dots with a composition of 90% catalyst, 9% gelling agent and 1% crosslinker. Furthermore, these gel dots were inserted into a microfluidic reactor (MFR) and the conversion of the reaction using gel dots as catalysts in the MFR for 8 h at room temperature was studied. The gel dots containing primary amines showed a better conversion of about 83–90% with aliphatic aldehyde and 86–100% with aromatic aldehyde, compared to the tertiary amines (52–59% with aliphatic aldehyde and 77–93% with aromatic aldehydes) which resembles the reactivity of the amines. Moreover, the addition of polar solvent (water) in the reaction mixture and the swelling properties of the gel dots by altering the polymer backbone showed a significant enhancement in the conversion of the reaction, due to the increased accessibility of the catalytic sites in the polymeric network. These results suggested the primary-amine-based catalysts facilitate better conversion compared to tertiary amines and the reaction solvent had a significant influence on organocatalysis to improve the efficiency of MFR.}}, author = {{Killi, Naresh and Bartenbach, Julian and Kuckling, Dirk}}, issn = {{2310-2861}}, journal = {{Gels}}, keywords = {{Knoevenagel reaction, organocatalysis, polymeric gel dots, microfluidic reactions, polymeric networks}}, number = {{3}}, publisher = {{MDPI AG}}, title = {{{Polymeric Networks Containing Amine Derivatives as Organocatalysts for Knoevenagel Reaction within Continuously Driven Microfluidic Reactors}}}, doi = {{10.3390/gels9030171}}, volume = {{9}}, year = {{2023}}, } @book{51101, author = {{Werth, Gerda}}, isbn = {{9783658424442}}, issn = {{2661-8591}}, publisher = {{Springer Fachmedien Wiesbaden}}, title = {{{Neue Wege im mathematischen Unterricht: Auf den Spuren Mathilde Vaertings}}}, doi = {{10.1007/978-3-658-42445-9}}, year = {{2023}}, } @inproceedings{51739, author = {{Weiß, Deborah and Duffe, Tobias and Buczek, Moritz and Kullmer, Gunter and Schramm, Britta}}, location = {{Berlin}}, publisher = {{Deutscher Verband für Materialforschung und -prüfung e.V.}}, title = {{{Bruchmechanische Untersuchung des Dualphasenstahls HCT590X unter Temperatureinfluss}}}, doi = {{10.48447/WP-2023-244}}, year = {{2023}}, } @book{52852, author = {{Janus, Richard}}, isbn = {{978-3-643-15443-9}}, pages = {{142}}, publisher = {{LIT-Verlag}}, title = {{{Inklusion und Religionsunterricht. Einführung in eine heterogenitätssensible Religionspädagogik}}}, volume = {{9}}, year = {{2023}}, } @article{53801, abstract = {{In this study, we evaluate the impact of gender-biased data from German-language physician reviews on the fairness of fine-tuned language models. For two different downstream tasks, we use data reported to be gender biased and aggregate it with annotations. First, we propose a new approach to aspect-based sentiment analysis that allows identifying, extracting, and classifying implicit and explicit aspect phrases and their polarity within a single model. The second task we present is grade prediction, where we predict the overall grade of a review on the basis of the review text. For both tasks, we train numerous transformer models and evaluate their performance. The aggregation of sensitive attributes, such as a physician’s gender and migration background, with individual text reviews allows us to measure the performance of the models with respect to these sensitive groups. These group-wise performance measures act as extrinsic bias measures for our downstream tasks. In addition, we translate several gender-specific templates of the intrinsic bias metrics into the German language and evaluate our fine-tuned models. Based on this set of tasks, fine-tuned models, and intrinsic and extrinsic bias measures, we perform correlation analyses between intrinsic and extrinsic bias measures. In terms of sensitive groups and effect sizes, our bias measure results show different directions. Furthermore, correlations between measures of intrinsic and extrinsic bias can be observed in different directions. This leads us to conclude that gender-biased data does not inherently lead to biased models. Other variables, such as template dependency for intrinsic measures and label distribution in the data, must be taken into account as they strongly influence the metric results. Therefore, we suggest that metrics and templates should be chosen according to the given task and the biases to be assessed. }}, author = {{Kersting, Joschka and Maoro, Falk and Geierhos, Michaela}}, issn = {{0169-023X}}, journal = {{Data & Knowledge Engineering}}, keywords = {{Language model fairness, Aspect phrase classification, Grade prediction, Physician reviews}}, publisher = {{Elsevier}}, title = {{{Towards comparable ratings: Exploring bias in German physician reviews}}}, doi = {{10.1016/j.datak.2023.102235}}, volume = {{148}}, year = {{2023}}, } @misc{54053, abstract = {{Unmittelbar nach der nationalsozialistischen Machtergreifung setzte eine umfassende gesellschaftliche, juristische und existentielle Ausgrenzung jüdischer Akteure ein. Dem Zerbrechen bisheriger Welt- und Normverständnisse zu begegnen wurde zu einer existentiellen Herausforderung sowie zu einem notwendigen Bedürfnis. Eine wichtige Strategie war der Einsatz von Humor und Ironie; auch für die Menschen des Gettos Litzmannstadt. Aus texthermeneutischer, kulturlinguistischer und sprachphilosophischer Perspektive erfasst Friedrich Markewitz – unter Berücksichtigung des Gettos als Diskursraum und dessen Textsortenwelt – Verwendungsweisen und -funktionen von Ironie und perspektiviert sie, um so einen Beitrag zur linguistischen Aufarbeitung der Kommunikation jüdischer Akteure während der Shoa zu leisten.}}, author = {{Markewitz, Friedrich}}, pages = {{529}}, publisher = {{Vandenhoeck & Ruprecht}}, title = {{{Gegen das Verstummen. Texthermeneutische Reflexionen zu Ironie in der Textsortenwelt des Gettos Litzmannstadt}}}, volume = {{2}}, year = {{2023}}, } @book{54054, abstract = {{Die nationalsozialistische Gesellschaft war geprägt von vielgestaltigen kommunikativen Praktiken des sozialen und auch gewaltvollen Ein- und Ausschlusses. Gleichzeitig bildeten sich durch Widerstandshandlungen vielfältige Gegendiskurse heraus. Der Sammelband nimmt konkrete Beispiele kommunikativer Praktiken während des Nationalsozialismus in den Blick und fragt speziell danach, inwiefern diese themen-, textsorten- und akteursspezifisch gebunden waren}}, editor = {{Markewitz, Friedrich and Scholl, Stefan and Schubert, Katrin and Wilk, Nicole M.}}, pages = {{240}}, publisher = {{Vandenhoeck & Ruprecht}}, title = {{{Kommunikative Praktiken im Nationalsozialismus}}}, volume = {{3}}, year = {{2023}}, } @misc{54389, author = {{Bürckner, Lorena Marie}}, title = {{{Entwicklung eines Verfahrens zur Probenentnahme aus einem Pulverkuchen im SLS-Prozess}}}, year = {{2023}}, } @inproceedings{46988, abstract = {{Extremwettersituationen sind durch die Kombination von globalen und lokalen Wirkzusammenhän-gen gekennzeichnet. In der Gefahrenanalyse und -reaktion ist deshalb der Umgang mit extremen Daten erforderlich, die von heterogenen Datenquellen bezogen und mittels unterschiedlicher Ver-fahren bis hin zum maschinellen Lernen ausgewertet werden. Die Visualisierung dieser zwangsläufig unsicherheitsbehafteten Daten stellt eine Herausforderung dar. Diese wirkt umso bedeutsamer, je weniger Fachexpertise in Bereichen wie Meteorologie, Geologie oder Sensortechnik in einer Füh-rungs- oder Leitstelle eingebunden werden kann. Das Management kritischer Situationen in Echtzeit bei extremen und komplexen Daten muss daher auf einer Bewertung der Informationsqualität von extremen Daten beruhen. Diese Bewertung ist abhängig vom Anwendungskontext in unterschiedli-chen Führungs- und Assistenzstellen sowie der verfügbaren Infrastruktur mit Geräten zur Visualisie-rung, Schnittstellen von Wetterdiensten, Sensorsysteme und Rettungsrobotik. Im Beitrag wird der Ansatz des EU-Projekts CREXDATA in Bezug auf mögliche pluviale Hochwassersituationen in Inns-bruck vorgestellt. Grundlage bildet die Kategorisierung von extremen Daten, die Schnittstellen zu Datenquellen mit globalem und lokalem Bezug sowie Anwendungsfälle für die Visualisierung von Informationen. Es werden somit Grundlagen präsentiert, die in allen Formen von geobasierten Lage- und Führungsinformationssystemen zum Einsatz kommen können.}}, author = {{Pottebaum, Jens and Rechberger, Christina and Hieb, Michael and Gräßler, Iris and Resch, Christian}}, booktitle = {{Tagungsband der Fachtagung Katastrophenforschung 2023}}, isbn = {{978-3-900397-11-1}}, location = {{Leoben}}, pages = {{26--29}}, title = {{{Extremwettersituationen in alpinen Gebieten: Management kritischer Situationen in Echtzeit bei extremen und komplexen Daten}}}, year = {{2023}}, } @inproceedings{42643, author = {{Chudalla, Nick and Meschut, Gerson and Schneider, Miriam and Smart, Dominic }}, booktitle = {{23. Kolloquium: Gemeinsame Forschung in der Klebtechnik}}, location = {{Frankfurt a. M.}}, title = {{{Systematisierung einer rechnergestützten Auswertemethode zur Versagensanalyse geklebter Verbindungen}}}, year = {{2023}}, } @inproceedings{51338, author = {{Schütte, Jan and Sextro, Walter}}, booktitle = {{20. VDI-Fachtagung Reifen - Fahrwerk - Fahrbahn}}, location = {{Karlsruhe}}, pages = {{165--180}}, publisher = {{VDI Verlag GmbH}}, title = {{{Einfluss der Radhubkinematik auf den Reifenverschleiß}}}, volume = {{2425}}, year = {{2023}}, } @inproceedings{47299, author = {{Krause, Alexander and Klemmer, Jan H. and Huaman, Nicolas and Wermke, Dominik and Acar, Yasemin and Fahl, Sascha}}, booktitle = {{32nd USENIX Security Symposium, USENIX Security 2023, Anaheim, CA, USA, August 9-11, 2023}}, editor = {{Calandrino, Joseph A. and Troncoso, Carmela}}, publisher = {{USENIX Association}}, title = {{{Pushed by Accident: A Mixed-Methods Study on Strategies of Handling Secret Information in Source Code Repositories}}}, year = {{2023}}, } @inproceedings{47301, author = {{Höltervennhoff, Sandra and Klostermeyer, Philip and Wöhler, Noah and Acar, Yasemin and Fahl, Sascha}}, booktitle = {{32nd USENIX Security Symposium, USENIX Security 2023, Anaheim, CA, USA, August 9-11, 2023}}, editor = {{Calandrino, Joseph A. and Troncoso, Carmela}}, publisher = {{USENIX Association}}, title = {{{"I wouldn’t want my unsafe code to run my pacemaker": An Interview Study on the Use, Comprehension, and Perceived Risks of Unsafe Rust}}}, year = {{2023}}, } @inproceedings{47298, author = {{Mink, Jaron and Kaur, Harjot and Schmüser, Juliane and Fahl, Sascha and Acar, Yasemin}}, booktitle = {{32nd USENIX Security Symposium, USENIX Security 2023, Anaheim, CA, USA, August 9-11, 2023}}, editor = {{Calandrino, Joseph A. and Troncoso, Carmela}}, publisher = {{USENIX Association}}, title = {{{"Security is not my field, I’m a stats guy": A Qualitative Root Cause Analysis of Barriers to Adversarial Machine Learning Defenses in Industry}}}, year = {{2023}}, }