TY - GEN
ED - Brand, Selma
ED - Günesli, Habib
ED - Eder, Sabine
ID - 52232
KW - Moratorium
KW - Medienbildung
KW - Frühe Bildung
KW - Digitalisierung
KW - Jugendmedienschutz
KW - Medienkompetenz
KW - Prävention
KW - Professionalisierung
T2 - Schule und Digitalisierung – Neue Lernformate für die Zukunft
TI - Positionierung zum Moratorium der Digitalisierung in Kitas und Schulen. Von der Notwendigkeit einer fachlichen Einordnung aus Sicht der GMK e.V.
ER -
TY - CHAP
AU - Albrecht, Jörn
AU - Kunert, Irene Dorothea
ED - Winter-Froemel, Esme
ED - Octavio de Toledo y Huerta, Álvaro S.
ID - 52244
T2 - Manual of Discourse Traditions in Romance
TI - Discourse traditions, text linguistics, and translation studies
ER -
TY - GEN
AU - Kunert, Irene Dorothea
ID - 52246
T2 - Vox Romanica
TI - Felix Tacke, Sprachliche Aufmerksamkeitslenkung. Historische Syntax und Pragmatik romanischer Zeigeaktkonstruktionen, Frankfurt am Main (Vittorio Klostermann) 2022, xiii + 616 p. (Analecta Romanica 92)
VL - 82
ER -
TY - CHAP
AU - Kunert, Irene Dorothea
ID - 52248
T2 - Comparatio delectat IV (vorläufiger Titel; Artikel eingereicht 2023)
TI - Präferenzen beim Gebrauch von Konklusionsmarkern im Französischen und im Deutschen
ER -
TY - JOUR
AB - Zusammenfassung
Einleitung Eine sport-assoziierte Concussion (saC) ist eine oftmals
unterschätzte Hirnverletzung, die vor allem in Kontakt- und
Kollisionssportarten häufig vorkommt. SaCs können zu einer
Vielzahl an klinischen Symptomen führen. Akute und zum Teil die
klinische Regeneration überdauernde parasympathische Inhibierung im
Autonomen Nervensystem (ANS) wurde nach saC bereits häufig beschrieben.
Über Veränderungen im sympathischen Nervensystem ist jedoch noch
wenig bekannt. Diese wurden durch Messungen der elektrodermalen
Aktivität (EDA) im Schlaf, der erheblich zur Regeneration nach saC
beiträgt, sowie im Zusammenhang mit subjektiven Symptomen nach saC im
Rahmen einer Pilotstudie untersucht.
Methode 18 Sportler und Sportlerinnen mit diagnostizierter saC und 18 nach
Alter, Geschlecht, Größe, Gewicht, Sportart und Leistungsklasse
gematchte Kontrollathleten und -athletinnen trugen in den Nächten
während der individuellen Return-to-Sport (RTS) Phase sowie drei Wochen
nach Abschluss des RTS (postRTS) einen Handgelenkssensor (E4 Empatica Inc.,
Mailand, Italien). Anteile nächtlicher tonischer (meanEDA) und
phasischer (EDRs, Schlafstürme) EDA wurden zwecks Gruppenvergleich
ermittelt und mit saC-Symptomen (SCAT5) sowie dem subjektiven Erholungszustand
nach Schlaf mittels Mann-Whitney U-Tests oder ungepaarten t-Tests
verglichen.
Ergebnisse Während und nach dem RTS konnten keine
Gruppenunterschiede in den nächtlichen EDA-Parametern nachgewiesen
werden. Eine höhere meanEDA während des RTS korrelierte mit
einer höheren Anzahl an Symptomen (p=0,025, r=0,525) und
eine erhöhte phasische EDA mit einem geringeren Anstieg des subjektiven
Erholungszustands von vor zu nach Schlaf (EDRs: p=0,007,
r=−0,642; EDRs/min: p>0,001,
r=−0,762; Schlafstürme: p=0,011,
r=−0,616).
Fazit Die nächtliche EDA nach saC unterschied sich während
und nach dem RTS nicht signifikant zu gematchten Kontrollsportlern und
-sportlerinnen. Der Zusammenhang zwischen höherer EDA während
des RTS und der Anzahl an saC-Symptomen sowie der geringeren subjektiven
Erholung nach Schlaf könnte sowohl ursächlich für als
auch Effekt der subjektiven Symptome sein und sollte durch Baseline-Messungen
und in Kombination mit parasympathischen Markern künftig weiter
untersucht werden.
AU - Delling, Anne Carina
AU - Jakobsmeyer, Rasmus
AU - Christiansen, Nele
AU - Coenen, Jessica
AU - Reinsberger, Claus
ID - 46136
IS - 02
JF - B&G Bewegungstherapie und Gesundheitssport
KW - General Medicine
SN - 1613-0863
TI - Nächtliche sympathische Aktivität und subjektive Symptome nach sport-assoziierter Concussion: eine Pilotstudie
VL - 39
ER -
TY - GEN
AB - Session tickets are a resumption mechanism, which can speed up repeated TLS connections. To do so, information is stored client-side, encrypted with an additional symmetric key, which is separate from existing private keys. A server only has to store this key, making session tickets stateless for the server. If the key is shared between servers, a client can be misled into resuming a session with a different, less secure server. In this thesis, we design and implement a scan for detecting prerequisites to such an attack, by requesting and redeeming tickets for pair-wise servers. We find that 17,901 out of 22,127 scanned (virtual) hosts are potentially vulnerable to this attack because they share their keys and accept tickets issued for other domains. We discuss the difficulties of detecting such an attack and show that unfortunately, our approach does not scale to larger sample sizes.
AU - Storm, Tim Leonhard
ID - 52251
TI - Large Scale Scanning of TLS Session Ticket Confusion
ER -
TY - CONF
AU - Drossel, Kerstin
AU - Bette, Ricarda
AU - Oldak, Anna
AU - Eickelmann, Birgit
ID - 51705
T2 - Vortrag im Rahmen der Online-Dialogreihe „Schulentwicklung digital“ des Metavorhabens digi-ebf (online)
TI - Handlungsempfehlungen für chancengerechte, digitalisierungsbezogene Schulentwicklungsprozesse
ER -
TY - CHAP
AU - Muschalik, Maximilian
AU - Fumagalli, Fabian
AU - Hammer, Barbara
AU - Huellermeier, Eyke
ID - 48776
SN - 0302-9743
T2 - Machine Learning and Knowledge Discovery in Databases: Research Track
TI - iSAGE: An Incremental Version of SAGE for Online Explanation on Data Streams
ER -
TY - CHAP
AU - Muschalik, Maximilian
AU - Fumagalli, Fabian
AU - Jagtani, Rohit
AU - Hammer, Barbara
AU - Huellermeier, Eyke
ID - 48778
SN - 1865-0929
T2 - Communications in Computer and Information Science
TI - iPDP: On Partial Dependence Plots in Dynamic Modeling Scenarios
ER -
TY - GEN
AU - Sennefelder, Lisa
ID - 46779
IS - 3
T2 - Sport und Gesellschaft
TI - Rezension zu: Bette, K.-H. & Kühnle, F.: Flitzer im Sport – Zur Sozialfigur des Störenfrieds
VL - 20
ER -
TY - GEN
AU - Beckendorf, Björn
ID - 52317
TI - Self-Stabilizing Skip-Graph with Growth-bounded Metric
ER -
TY - CHAP
AU - Abdelrahem, Mohammed
ED - Dawwa, Hany
ID - 52319
KW - Dialog der Religionen
KW - interreligiöser Dialog
KW - Hass
KW - Hassrede
T2 - khiṭāb al-karāhiya wa-taḥaddiyāt al-ḥiwār – taqāṭuʿāt wa-muwāǧahāt (Hassrede und die Herausforderungen des Dialogs – Überschneidungen und Konfrontationen)
TI - khiṭāb al-karāhiya – iṭlāla ʿala taʾwīlāt maghlūṭa li-n-nuṣūṣ al-islāmiya (Hassrede – Überblick auf kritische Interpretationen islamischer Texte)
ER -
TY - JOUR
AB - AbstractExplainable artificial intelligence has mainly focused on static learning scenarios so far. We are interested in dynamic scenarios where data is sampled progressively, and learning is done in an incremental rather than a batch mode. We seek efficient incremental algorithms for computing feature importance (FI). Permutation feature importance (PFI) is a well-established model-agnostic measure to obtain global FI based on feature marginalization of absent features. We propose an efficient, model-agnostic algorithm called iPFI to estimate this measure incrementally and under dynamic modeling conditions including concept drift. We prove theoretical guarantees on the approximation quality in terms of expectation and variance. To validate our theoretical findings and the efficacy of our approaches in incremental scenarios dealing with streaming data rather than traditional batch settings, we conduct multiple experimental studies on benchmark data with and without concept drift.
AU - Fumagalli, Fabian
AU - Muschalik, Maximilian
AU - Hüllermeier, Eyke
AU - Hammer, Barbara
ID - 50262
IS - 12
JF - Machine Learning
KW - Artificial Intelligence
KW - Software
SN - 0885-6125
TI - Incremental permutation feature importance (iPFI): towards online explanations on data streams
VL - 112
ER -
TY - CONF
AU - Fumagalli, Fabian
AU - Muschalik, Maximilian
AU - Hüllermeier, Eyke
AU - Hammer, Barbara
ID - 48775
T2 - ESANN 2023 proceedings
TI - On Feature Removal for Explainability in Dynamic Environments
ER -
TY - CONF
AU - Fumagalli, Fabian
AU - Muschalik, Maximilian
AU - Kolpaczki, Patrick
AU - Hüllermeier, Eyke
AU - Hammer, Barbara
ID - 52230
T2 - NeurIPS 2023 - Advances in Neural Information Processing Systems
TI - SHAP-IQ: Unified Approximation of any-order Shapley Interactions
VL - 36
ER -
TY - JOUR
AU - Demir, Caglar
AU - Wiebesiek, Michel
AU - Lu, Renzhong
AU - Ngonga Ngomo, Axel-Cyrille
AU - Heindorf, Stefan
ID - 46248
JF - ECML PKDD
TI - LitCQD: Multi-Hop Reasoning in Incomplete Knowledge Graphs with Numeric Literals
ER -
TY - CONF
AU - Intveen, Julie
AU - Hohwiller, Peter
ID - 52341
TI - The True Story of a Total Fake – Eine Untersuchung des didaktischen Potentials von Netflix‘ Inventing Anna
ER -
TY - CONF
AU - Intveen, Julie
ID - 52340
TI - Fictions of Identity – A Didactic Exploration of TV Series
ER -
TY - CONF
AU - Intveen, Julie
ID - 52339
TI - Fictions of Identity – A Didactic Approach to Serial Literacy
ER -
TY - JOUR
AU - Intveen, Julie
ID - 52336
IS - 4
JF - Englisch betrifft uns
TI - Chasing the American Dream: Chances and challenges of immigrant families – a media task
ER -
TY - JOUR
AB - The use of iron as a replacement for noble metals in photochemical and photophysical applications is challenging due to the typically fast deactivation of short-lived catalytically active states. Recent success of a cyclometalated iron(III) complex utilizing a bis-tridentate ligand motif inspired the use of phenyl-1H-pyrazole as a bidentate ligand. Five complexes using the tris(1-phenylpyrazolato-N,C2)iron(III) complex scaffold are presented. In addition to the parent complex, four derivatives with functionalization in the meta-position of the phenyl ring are thoroughly investigated by single crystal diffractometry, UV-Vis-spectroscopy, and cyclic voltammetry. Advanced X-ray spectroscopy in the form of X-ray absorption and emission spectroscopy allows unique insights into the electronic structure as well as DFT calculations. The ligand design leads to overlapping MLCT and LMCT absorption bands, and emissive behavior is suppressed by low-lying MC states.
AU - Hirschhausen, Tanja
AU - Fritsch, Lorena
AU - Lux, Franziska
AU - Steube, Jakob
AU - Schoch, Roland
AU - Neuba, Adam
AU - Egold, Hans
AU - Bauer, Matthias
ID - 46548
IS - 7
JF - Inorganics
KW - Inorganic Chemistry
KW - Computing Resources Provided by the Paderborn Center for Parallel Computing
KW - pc2-ressources
SN - 2304-6740
TI - Iron(III)-Complexes with N-Phenylpyrazole-Based Ligands
VL - 11
ER -
TY - JOUR
AU - Rogolino, Andrea
AU - Filho, José B. G.
AU - Fritsch, Lorena
AU - Ardisson, José D.
AU - da Silva, Marcos A. R.
AU - Atta Diab, Gabriel Ali
AU - Silva, Ingrid Fernandes
AU - Moraes, Carlos André Ferreira
AU - Forim, Moacir Rossi
AU - Bauer, Matthias
AU - Kühne, Thomas D.
AU - Antonietti, Markus
AU - Teixeira, Ivo F.
ID - 46547
IS - 13
JF - ACS Catalysis
KW - Catalysis
KW - General Chemistry
KW - pc2-ressources
KW - Computing Resources Provided by the Paderborn Center for Parallel Computing
SN - 2155-5435
TI - Direct Synthesis of Acetone by Aerobic Propane Oxidation Promoted by Photoactive Iron(III) Chloride under Mild Conditions
VL - 13
ER -
TY - JOUR
AB - Photoactive chromium(III) complexes saw a conceptual breakthrough with the discovery of the prototypical molecular ruby mer-[Cr(ddpd)2]3+ (ddpd = N,N′-dimethyl-N,N′-dipyridin-2-ylpyridine-2,6-diamine), which shows intense long-lived near-infrared (NIR) phosphorescence from metal-centered spin-flip states. In contrast to the numerous studies on chromium(III) photophysics, only 10 luminescent molybdenum(III) complexes have been reported so far. Here, we present the synthesis and characterization of mer-MoX3(ddpd) (1, X = Cl; 2, X = Br) and cisfac-[Mo(ddpd)2]3+ (cisfac-[3]3+), an isomeric heavy homologue of the prototypical molecular ruby. For cisfac-[3]3+, we found strong zero-field splitting using magnetic susceptibility measurements and electron paramagnetic resonance spectroscopy. Electronic spectra covering the spin-forbidden transitions show that the spin-flip states in mer-1, mer-2, and cisfac-[3]3+ are much lower in energy than those in comparable chromium(III) compounds. While all three complexes show weak spin-flip phosphorescence in NIR-II, the emission of cisfac-[3]3+ peaking at 1550 nm is particularly low in energy. Femtosecond transient absorption spectroscopy reveals a short excited-state lifetime of 1.4 ns, 6 orders of magnitude shorter than that of mer-[Cr(ddpd)2]3+. Using density functional theory and ab initio multireference calculations, we break down the reasons for this disparity and derive principles for the design of future stable photoactive molybdenum(III) complexes.
AU - Kitzmann, Winald R.
AU - Hunger, David
AU - Reponen, Antti-Pekka M.
AU - Förster, Christoph
AU - Schoch, Roland
AU - Bauer, Matthias
AU - Feldmann, Sascha
AU - van Slageren, Joris
AU - Heinze, Katja
ID - 52345
IS - 39
JF - Inorganic Chemistry
KW - Inorganic Chemistry
KW - Physical and Theoretical Chemistry
SN - 0020-1669
TI - Electronic Structure and Excited-State Dynamics of the NIR-II Emissive Molybdenum(III) Analogue to the Molecular Ruby
VL - 62
ER -
TY - JOUR
AB - Macrocyclization reactions are still challenging due to competing oligomerization, which requires the use of small substrate concentrations. Here, the cationic tungsten imido and tungsten oxo alkylidene N-heterocyclic carbene complexes [[W(N-2,6-Cl2-C6H3)(CHCMe2Ph(OC6F5)(pivalonitrile)(IMes)+ B(ArF)4−] (W1) and [W(O)(CHCMe2Ph(OCMe(CF3)2)(IMes)(CH3CN)+ B(ArF)4−] (W2) (IMes=1,3-dimesitylimidazol-2-ylidene; B(ArF)4−=tetrakis(3,5-bis(trifluoromethyl)phenyl borate) have been immobilized inside the pores of ordered mesoporous silica (OMS) with pore diameters of 3.3 and 6.8 nm, respectively, using a pore-selective immobilization protocol. X-ray absorption spectroscopy of W1@OMS showed that even though the catalyst structure is contracted due to confinement by the mesopores, both the oxidation state and structure of the catalyst stayed intact upon immobilization. Catalytic testing with four differently sized α,ω-dienes revealed a dramatically increased macrocyclization (MC) and Z-selectivity of the supported catalysts compared to the homogenous progenitors, allowing high substrate concentrations of 25 mM. With the supported complexes, a maximum increase in MC-selectivity from 27 to 81 % and in Z-selectivity from 17 to 34 % was achieved. In general, smaller mesopores exhibited a stronger confinement effect. A comparison of the two supported tungsten-based catalysts showed that W1@OMS possesses a higher MC-selectivity, while W2@OMS exhibits a higher Z-selectivity which can be rationalized by the structures of the catalysts.
AU - Ziegler, Felix
AU - Bruckner, Johanna R.
AU - Nowakowski, Michal
AU - Bauer, Matthias
AU - Probst, Patrick
AU - Atwi, Boshra
AU - Buchmeiser, Michael R.
ID - 52344
IS - 21
JF - ChemCatChem
KW - Inorganic Chemistry
KW - Organic Chemistry
KW - Physical and Theoretical Chemistry
KW - Catalysis
SN - 1867-3880
TI - Macrocyclization of Dienes under Confinement with Cationic Tungsten Imido/Oxo Alkylidene N‐Heterocyclic Carbene Complexes
VL - 15
ER -
TY - JOUR
AB - The effects of backbone amine functionalization in three new homoleptic C^N^C type ruthenium(II) complexes bearing a tridentate bis‐imidazole‐2‐ylidene pyridine ligand framework are characterized and studied by single crystal diffraction, electrochemistry, optical spectroscopy and transient absorption spectroscopy in combination with ab initio DFT calculations. Functionalization by dimethylamine groups in 4‐position of the pyridine backbone significantly influences the properties of the complexes as revealed by comparison with the unfunctionalized references. As a result of the amine functionalization, a higher molar absorption coefficient of the MLCT bands, a decreased photoluminescence quantum yield at room temperature together with a shortened excited state lifetime but an improved photostability is observed. Introduction of electron donating and withdrawing groups at the NHC unit modifies the electronic and optical properties, such as the oxidation potential, absorption and emission properties, and the lifetimes of the excited states.
AU - Fritsch, Lorena
AU - Vukadinovic, Yannik
AU - Lang, Moritz
AU - Naumann, Robert
AU - Bertrams, Maria-Sophie
AU - Kruse, Ayla
AU - Schoch, Roland
AU - Müller, Patrick
AU - Neuba, Adam
AU - Dierks, Philipp
AU - Lochbrunner, Stefan
AU - Kerzig, Christoph
AU - Heinze, Katja
AU - Bauer, Matthias
ID - 49608
JF - ChemPhotoChem
KW - Organic Chemistry
KW - Physical and Theoretical Chemistry
KW - Analytical Chemistry
KW - Computing Resources Provided by the Paderborn Center for Parallel Computing
KW - pc2-ressources
SN - 2367-0932
TI - Chemical and photophysical properties of amine functionalized bis‐NHC‐pyridine‐RuII complexes
ER -
TY - GEN
AU - Beutner, Marc
AU - Schneider, Jennifer Nicole
ID - 47901
T2 - International Conference on Industry Sciences and Computer Science Innovation
TI - The use of IT and OER to support remote sustainable work in Europeans Green Economy
ER -
TY - CHAP
AU - Schwede, Jana
AU - Harteis, Christian
ED - Müller, Claudia
ED - Pranger, Jan
ED - Reißland, Jens
ID - 52330
T2 - Nachhaltigkeitsorientierte Weiterbildungsdidaktik: Die doppelte Multiplikatorenqualifizierung
TI - Weiterbildung des Weiterbildungspersonals – Vorwiegend eine Aufgabe des Lernens am Arbeitsplatz
VL - 73
ER -
TY - JOUR
AU - Diederich, Malte
AU - Spatz, Verena
AU - Bauer, Anna Brigitte
ID - 52358
JF - Phydid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung (2022)
TI - Auswirkungen einer Online-Intervention (Mindset, Lerntechniken) auf den Studieneinstieg
ER -
TY - CONF
AB - Megatrends, such as digitization or sustainability, are confronting the product management of manufacturing companies with a variety of challenges regarding the design of future products, but also the management of the actual products. To successfully position their products in the market, product managers need to gather and analyze comprehensive information about customers, developments in the products’ environment, product usage, and more. The digitization of all aspects of life is making data on these topics increasingly available – via social media, documents, or the internet of things from the products themselves. The systematic collection and analysis of these data enable the exploitation of new potentials for the adaption of existing products and the creation of the products of tomorrow. However, there are still no insights into the main concepts and cause-effect relationships in exploiting data-driven approaches for product management. Therefore, this paper aims to identify the main concepts and advantages of data-driven product management. To answer the corresponding research questions a comprehensive systematic literature review is conducted. From its results, a detailed description of the main concepts of data-driven product management is derived. Furthermore, a taxonomy for the advantages of data-driven product management is presented. The main concepts and the taxonomy allow for a deeper understanding of the topic while highlighting necessary future actions and research needs.
AU - Fichtler, Timm
AU - Grigoryan, Khoren
AU - Koldewey, Christian
AU - Dumitrescu, Roman
ID - 52369
KW - Product Lifecyle Management (PLM)
KW - Data Analytics
KW - Data-driven Design
KW - Engineering Management
KW - Lifecycle Data
T2 - 2023 IEEE International Conference on Technology Management, Operations and Decisions (ICTMOD)
TI - Towards a Data-Driven Product Management – Concepts, Advantages, and Future Research
ER -
TY - GEN
AU - Vernholz, Mats
ED - Perla, Loredana
ED - Agrati, Laura Sara
ED - Vinci, Viviana
ED - Scarinci, Alessia
ID - 52370
SN - 9791255681038
T2 - Living and Leading in the Next Era: Connecting Teaching, Research, Citizenship and Equity
TI - Academic self-concepts of pre-service technology teachers for vocational education in Germany according to the TPACK- Model
ER -
TY - GEN
AU - Hollenhorst, Viola
AU - Kenig, Eugeny Y.
ID - 43047
TI - CFD-Untersuchungen der Fluiddynamik und des Wärmetransports an rauen Oberflächen
ER -
TY - THES
AB - Füllkörper spielen in industriellen Trennprozessen eine wichtige Rolle bspw. bei der Reinigung industrieller Abgase durch Absorption. Die Trennleistung von Füllkörperkolonnen wird üblicherweise mittels vereinfachter Stufenmodelle ermittelt, deren Modellparameter experimentell bestimmt werden müssen. Dies stellt eine große Schwäche von Stufenmodellen dar, da diese Parameterim Allgemeinen nicht auf verschiedene Stoffsysteme und Füllkörpertypen übertragbar sind.In dieser Arbeit wird ein Modell, basierend auf dem hydrodynamischen Analogieansatz, zur Beschreibung von Absorptionsvorgängen in Füllkörperkolonnen vorgestellt. Dabei ist die Geometrie der festen Phase direkt abhängig von der Füllkörpergeometrie und der Stochastik der Schüttung. Die tatsächlichen Strömungsverhältnisse in Füllkörperkolonnen werden erfasst und durch eine Kombination vereinfachter charakteristischer Strömungsformen reproduziert. Dies erlaubt die Verwendung rigoroser Transportgleichung. Dadurch enthält das Modell weniger experimentell zu ermittelnde Parameter und ist damit unabhängiger von Experimenten als vereinfachte Stufenmodelle. Das Modell wurde gegen experimentelle Daten zur CO2-Absorption in wässrige Natronlauge validiert. Mit dem entwickelten Modell wurde anschließend eine Parameterstudie durchgeführt, die der Unterstützung der Entwicklung neuer Füllkörpergeometrien dient. Dazu wurde eine Simulationsstudie durchgeführt, die den Einfluss der Füllkörpergeometrie auf die Trennleistung untersucht.
AU - Salten, Alexander Heinrich Johannes
ID - 52402
TI - Modellierung der Reaktivabsorption in regellosen Schüttungen und modellbasierte Optimierung von Füllkörpern mit dem Ansatz der hydrodynamischen Analogien
ER -
TY - CONF
AU - Haak, Viktor
AU - Meschut, Gerson
AU - Epperlein, Maike
AU - Schiebahn, Alexander
AU - Reisgen, Uwe
ID - 50547
T2 - 25. DVS-Sondertagung Widerstandsschweißen
TI - Einseitiges Widerstandselementschweißen für die stahlintensive Mischbauweise
ER -
TY - JOUR
AU - Hochhaus, Thorben
AU - Bruns, Bastian
AU - Grünewald, Marcus
AU - Riese, Julia
ID - 47551
JF - Computers & Chemical Engineering
KW - Computer Science Applications
KW - General Chemical Engineering
SN - 0098-1354
TI - Optimal scheduling of a large-scale power-to-ammonia process: Effects of parameter optimization on the indirect demand response potential
VL - 170
ER -
TY - JOUR
AU - Röder, Lilli Sophia
AU - Gröngröft, Arne
AU - Grünewald, Marcus
AU - Riese, Julia
ID - 51360
JF - Chemical Engineering Transactions
TI - Demand Side Management Implementation in Downstream Digestate Treatment of a Biomethane Biorefinery
VL - 105
ER -
TY - JOUR
AB - AbstractThe time‐dependent adjustment of a system's power demand simultaneously with current power generation is commonly referred to as demand side management (DSM). DSM strategies are based on the flexibility to purchase electricity at times when prices are low, which can result in monetary benefits. One option to increase the flexibility of continuously operated processes is to oversize them. From an economic point of view, this leads to an increased investment. DSM only serves an economic purpose if the monetary benefits exceed this increase in capital costs. The main goal of this contribution is to develop a decision support tool to help evaluate unit operations regarding their feasibility for DSM implementation. In a case study, the decision support tool was applied to show its functionality on a biomethane production plant. The results show that with the help of the decision support tool, evaluating unit operations concerning their economic DSM potential is possible.
AU - Röder, Lilli
AU - Etzold, Hendrik
AU - Gröngröft, Arne
AU - Grünewald, Marcus
AU - Riese, Julia
ID - 49580
JF - Biofuels, Bioproducts and Biorefining
KW - Renewable Energy
KW - Sustainability and the Environment
KW - Bioengineering
SN - 1932-104X
TI - Decision support tool to determine the suitability of demand side management implementation in continuously operated processes – A biorefinery case study
ER -
TY - JOUR
AU - Intveen, Julie
ID - 52337
IS - 4
JF - Englisch betrifft uns
TI - “I was trying to protect you. I was trying to keep you safe.” Parental surveillance in the Black Mirror episode Arkangel
ER -
TY - JOUR
AU - Intveen, Julie
AU - Bauer, Maike
ID - 52334
IS - 5
JF - Englisch betrifft uns
TI - The United Kingdom: A Multicultural Society Education as a key to life in mixed communities
ER -
TY - JOUR
AU - Intveen, Julie
AU - Bauer, Maike
ID - 52335
IS - 5
JF - Englisch betrifft uns
TI - The Royal Divide - Exploring the impact of Megxit on the future of the British monarchy
ER -
TY - CHAP
AU - Abrego, Verónica
AU - Henke, Ina
AU - Kißling, Magdalena
AU - Lammer, Christina
AU - Leuker, Maria-Th.
ED - Abgrego, Verónica
ED - Henke, Ina
ED - Kißling, Magdalena
ED - Lammer, Christina
ED - Leuker, Maria-Th.
ID - 50212
T2 - Intersektionalität und erzählte Welten. Fachwissenschaftliche und fachdidaktische Perspektiven auf Literatur und Medien
TI - Intersektionalität und erzählte Welten – Einführung
ER -
TY - GEN
AU - Lammer, Christina
ID - 52389
TI - Het verschil tussen strips en graphic novels (in Vlaanderen)
ER -
TY - JOUR
AU - Genovese, Matteo
AU - Schlüter, Alexander
AU - Scionti, Eugenio
AU - Piraino, Francesco
AU - Corigliano, Orlando
AU - Fragiacomo, Petronilla
ID - 52204
IS - 44
JF - International Journal of Hydrogen Energy
KW - Hydrogen economy
KW - Green hydrogen
KW - Power-to-X
KW - Hydrogen-to-X
KW - Sector coupling
SN - 0360-3199
TI - Power-to-hydrogen and hydrogen-to-X energy systems for the industry of the future in Europe
VL - 48
ER -
TY - GEN
AB - We use QCD kinetic theory to compute photon production in the chemically
equilibrating Quark-Gluon Plasma created in the early stages of high-energy
heavy-ion collisions. We do a detailed comparison of pre-equilibrium photon
rates to the thermal photon production. We show that the photon spectrum
radiated from a hydrodynamic attractor evolution satisfies a simple scaling
form in terms of the specific shear viscosity $\eta/s$ and entropy density
$dS/d\zeta \sim {\scriptstyle \left(T\tau^{1/3}\right)^{3/2}}_\infty$. We
confirm the analytical predictions with numerical kinetic theory simulations.
We use the extracted scaling function to compute the pre-equilibrium photon
contribution in $\sqrt{s_{NN}}=2.76\,\text{TeV}$ 0-20\% PbPb collisions. We
demonstrate that our matching procedure allows for a smooth switching from
pre-equilibrium kinetic to thermal hydrodynamic photon production. Finally, our
publicly available implementation can be straightforwardly added to existing
heavy ion models.
AU - Oscar Garcia-Montero, Oscar Garcia-Montero
AU - Mazeliauskas, Aleksas
AU - Plaschke, Philip
AU - Schlichting, Sören
ID - 50171
T2 - arXiv:2308.09747
TI - Pre-equilibrium photons from the early stages of heavy-ion collisions
ER -
TY - THES
AU - Schneider, Jennifer Nicole
ID - 48010
TI - Open Educational Resources in der beruflichen Bildungslandschaft
ER -
TY - JOUR
AU - Al-Lami, Abbas Jarullah Sangoor
AU - Kenig, Eugeny
ID - 40645
JF - International Journal of Heat and Mass Transfer
TI - Experimental Study of an Internally Channeled Tube Heat Exchanger under Turbulent Flow Conditions
VL - 214
ER -
TY - GEN
AU - Unterstell, Rembert
ID - 51019
TI - Der Wirtschaft auch in der Krise das Atmen erlauben, Pandemie und Ökonomie – Interview mit Steuerexpertin Caren Sureth-Sloane
ER -
TY - GEN
AU - Unterstell, Rembert
ID - 51024
TI - Allowing the Economy to Breathe Even During the Crisis – Interview with Tax Expert Caren Sureth-Sloane
ER -
TY - CONF
AB - Abstract. The application of the mechanical joining process clinching allows the assembly of different sheet metal materials with a wide range of material thickness configurations, which is of interest for lightweight multi-material structures. In order to be able to predict the clinched joint properties as a function of the individual manufacturing steps, current studies focus on numerical modeling of the entire clinching process chain. It is essential to be able to take into account the influence of the joining process-induced damage on the load-bearing capacity of the joint during the loading phase. This study presents a numerical damage accumulation in the clinching process based on an implemented Hosford-Coulomb failure model using a 3D clinching process model applied on the aluminum alloy EN AW-6014 in temper T4. A correspondence of the experimentally determined failure location with the element of the highest numerically determined damage accumulation is shown. Moreover, the experimentally determined failure behavior is predicted to be in agreement in the numerical loading simulation with transferred pre-damage from the process simulation.
AU - Bielak, Christian Roman
AU - Böhnke, Max
AU - Friedlein, Johannes
AU - Bobbert, Mathias
AU - Mergheim, Julia
AU - Steinmann, Paul
AU - Meschut, Gerson
ID - 43090
SN - 2474-395X
T2 - Materials Research Proceedings
TI - Numerical analysis of failure modeling in clinching process chain simulation
ER -
TY - CONF
AB - Abstract. In the numerical simulation of mechanical joining technologies such as clinching, the material modeling of the joining parts is of major importance. This includes modeling the damage and failure behavior of the materials in accordance with varying occurring stress states. This paper presents a calibration method of three different fracture models. The calibration of the models is done by use of experimental data from a modified punch test, tensile test and bulge test in order to map the occurring stress states from clinching processes and to precisely model the resulting failure behavior. Experimental investigations were carried out for an aluminum alloy EN AW-6014 in temper T4 and compared with the simulative results generated in LS-DYNA. The comparison of force-displacement curves and failure initiation shows that the Hosford–Coulomb model predicts the failure behavior for the material used and the tests applied with the best accuracy.
AU - Böhnke, Max
AU - Bielak, Christian Roman
AU - Friedlein, Johannes
AU - Bobbert, Mathias
AU - Mergheim, Julia
AU - Steinmann, Paul
AU - Meschut, Gerson
ID - 43462
SN - 2474-395X
T2 - Materials Research Proceedings
TI - A calibration method for failure modeling in clinching process simulations
ER -
TY - CHAP
AU - Böhnke, Max
AU - Bielak, Christian Roman
AU - Bobbert, Mathias
AU - Meschut, Gerson
ID - 52454
SN - 2195-4356
T2 - Lecture Notes in Mechanical Engineering
TI - Experimental and Numerical Investigation of Clinched Joints Under Shear Tensile Loading at High Strain Rates
ER -
TY - CONF
AU - Friedlein, Johannes
AU - Bielak, Christian Roman
AU - Böhnke, Max
AU - Bobbert, Mathias
AU - Mergheim, Julia
AU - Steinmann, Paul
AU - Meschut, Gerson
ID - 43463
T2 - Materials Research Proceedings
TI - Influence of plastic orthotropy on clinching of sheet metal
ER -
TY - CHAP
AU - Breckner, Anne
AU - Schroeter-wittke, Harald
ED - Janus, Richard
ID - 52456
T2 - Katastrophen. Religiöse Bildung angesichts von Kriegs- und Krisenerfahrungen im 19. und 20. Jahrhundert
TI - Ambivalenzkompetenz? Rückblick auf die Tagung 'Katastrophen'. Religiöse Bildung angesichts von Kriegs- und Krisenerfahrungen im 19. und 20. Jahrhundert am Vortag des russischen Angriffs auf die Ukraine
VL - 26
ER -
TY - GEN
AU - Breckner, Anne
ID - 52466
TI - Karneval und OWL
ER -
TY - GEN
AU - Breckner, Anne
ID - 52464
TI - Auszeit
ER -
TY - JOUR
AU - Breckner, Anne
AU - Kamcili-Yildiz, Naciye
ID - 52457
IS - 4
JF - Religion 5-10
TI - Was brauchst du? Engagement für die Mitmenschen in Christentum und Islam. Interreligiöse Unterrichtsreihe im Themenheft Diakonie
VL - 52
ER -
TY - GEN
AU - Knorr, Lukas
AU - Schlosser, Florian
AU - Meschede, Henning
ID - 47540
TI - Economic Integration of a High-Temperature Heat Pump with Flexible Part-load Operation
ER -
TY - CONF
AU - Rauhaus, Johann
AU - Schadomsky, Magnus
AU - Magyar, Balázs
AU - Zimmer, Detmar
ID - 49555
SN - 978-3-9817451-8-4
T2 - Tagungsband der 64. Tribologie-Fachtagung
TI - Untersuchung des Reibungs- und Deformationsverhaltens von schnelllaufenden Bremsen
ER -
TY - GEN
AU - Klassen, Alexander
ID - 52480
TI - Fast Partial Reconfiguration for ReconOS64 on Xilinx MPSoC Devices
ER -
TY - CONF
AU - Annemann, C.
AU - Niemann, T.
AU - Gerick, J.
AU - Drossel, Kerstin
ID - 52489
T2 - Vortrag auf der Tagung 'Schule und Lehrkräfte. Bildung neu denken' der Sektion Empirische Bildungsforschung (AEPF/KBBB) in der DGfE. Universität Potsdam
TI - Prädiktoren für und Effekte von digitalisierungsbezogene(n) Lehrkräftefortbildungen in Deutschland –Ergebnisse einer Sekundäranalyse
ER -
TY - CONF
AB - Fused Deposition Modeling (FDM) is an additive manufacturing process to produce
complex thermoplastic geometries layer by layer. The filament is melted in a nozzle, iteratively
deposited, and then cools down. Due to the solidification process, the deposited filament strands
deviate from their intended position due to shrinkage, resulting in significant geometric deviations
in the final part. In terms of dimensional accuracy, there is a need for optimization, especially for
local curved geometries in relation to the global part with higher nominal dimensions. The aim of
this study is to investigate the size and shape deviations for cylindrical FDM elements and to
compensate the expected deformations by using an in-house software with adaptive scaling factors
in the x-y plane. Previous studies mainly focus on simple, non-curved objects, this study also
considers the influence of curvature and global as well as local deviations on the final part.
AU - Koers, Thorsten
AU - Magyar, Balázs
ED - Beaman, Joseph
ID - 47084
T2 - Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium 2023
TI - Determination and Compensation of the Shrinkage Behavior of Cylindrical Elements in the FDM Process
VL - 34
ER -
TY - CONF
AB - To ensure uniform documentation of support structure information, a concept is presented that enables a standardized depiction of support structures in technical drawings based on ISO 128-3. To this end, requirements for a uniform depiction are defined and a procedure for drawing entry is presented. The drawing entry should contain all production-relevant support structure information. The standardized documentation of support structure information in technical drawings is intended to ensure a simple, clear and safe exchange of information between business units or different companies along the value chain. As a result a possible drawing entry of support structures was developed. To distinguish between different support structure types, a standardized depiction of geometrical information in a specification field is shown. The specification field gives a detailed description of the support structure type, the geometry as well as the connection to the part and the building platform. Also uncommon support types like lattice structures or CAD based support structures can be implemented. To ensure the usability the depictio is editable and extendable.
AU - Lammers, Stefan
AU - Koers, Thorsten
AU - Magyar, Balázs
AU - Zimmer, Detmar
AU - Lieneke, Tobias
ED - Beaman, Joseph
ID - 48790
T2 - Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium 2023
TI - Depiction of support structures in technical drawings
VL - 34
ER -
TY - JOUR
AB - Sich wandelnde Bedingungen auf dem Ausbildungsmarkt, die daraus resultierenden veränderten Kompetenz- und Qualifikationsanforderungen sowie Anforderungen an eine lebensbegleitende berufliche Orientierung treffen insb. als (ausbildungs-)benachteiligt gekennzeichnete Jugendliche am Übergang Schule-Beruf. Jene Jugendliche münden in Maßnahmen des Übergangssystems wie die Ausbildungsvorbereitung (AV), wobei die konkreten Auswirkungen dieser Transformationsprozesse für diese Zielgruppe weitgehend unklar bleiben. In unserem Beitrag greifen wir die Überlegungen der Arbeitsgruppe 9+1 zum Übergangssystem verstanden als Chancenverbesserungssystem auf und diskutieren, was hierunter verstanden werden kann. Schließlich führen wir konkrete Anforderungen an das Chancenverbesserungssystem mit den Handlungsmöglichkeiten der Jugendlichen zusammen. Grundlegend verfolgen wir dabei nicht die Perspektive einer Anpassung der Jugendlichen an die Arbeitswelt, sondern fragen vielmehr danach, was Bildung leisten muss. Hierfür nehmen wir über qualitative Fallstudien die Perspektive der Jugendlichen sowie die Sichtweise des Bildungspersonals auf. In diesem Rahmen führen wir eine anforderungs- und subjektorientierte Perspektive zusammen und diskutieren u. a. anhand von Perspektiven auf das System, die curriculare Ebene, die Haltung der Bildungsakteur*innen, etc., was mit einer Gestaltung des Übergangssystems als Chancenverbesserungssystem konkret verbunden wäre.
AU - Kremer, H.-Hugo
AU - Otto, Franziska
ID - 51166
JF - bwp@ Berufs- und Wirtschaftspädagogik – online
KW - Übergangssystem
KW - Selbstinszenierung
KW - Chancenverbesserung
KW - Subjektorientierung
KW - Übergang Schule-Ausbildung
TI - Übergang Schule-Beruf als Chancenverbesserungssystem – Zur Gestaltung von Lebensräumen und Entwicklung von Praktiken für den Übergang
VL - Ausgabe 45
ER -
TY - CONF
AU - Sengupta, Meghdut
AU - Alshomary, Milad
AU - Scharlau, Ingrid
AU - Wachsmuth, Henning
ID - 52475
T2 - Findings of the Association for Computational Linguistics: EMNLP 2023
TI - Modeling Highlighting of Metaphors in Multitask Contrastive Learning Paradigms
ER -
TY - GEN
AU - Tschöpe, Jan-Cedric Philipp Balthasar
ID - 52502
TI - Selektives Lasersintern mit glasverstärkten Kunstsoff-Dry-Blends Analyse von Verarbeitbarketi und Bauteileigenschaften im Vergleich zu partikelgefüllten Kunststoffpulvern
ER -
TY - CHAP
AU - Schütte, Jan
AU - Sextro, Walter
ID - 51338
T2 - 20. VDI-Fachtagung Reifen - Fahrwerk - Fahrbahn
TI - Einfluss der Radhubkinematik auf den Reifenverschleiß
VL - 2425
ER -
TY - GEN
AU - Kepper, Johannes
AU - Münzmay, Andreas
ID - 47487
T2 - DHd2023: Open Humanities, Open Culture
TI - Open Data in musikphilologischen Projekten: Herausforderungen, Strategien, Potenziale
ER -
TY - CONF
AU - Sengupta, Meghdut
AU - Alshomary, Milad
AU - Wachsmuth, Henning
ID - 52477
T2 - Proceedings of the 3rd Workshop on Figurative Language Processing (FLP)
TI - Back to the Roots: Predicting the Source Domain of Metaphors using Contrastive Learning
ER -
TY - CONF
AU - Prager, Raphael Patrick
AU - Trautmann, Heike
ED - Silva, Sara
ED - Paquete, Luís
ID - 52530
T2 - Companion Proceedings of the Conference on Genetic and Evolutionary Computation, GECCO 2023, Companion Volume, Lisbon, Portugal, July 15-19, 2023
TI - Investigating the Viability of Existing Exploratory Landscape Analysis Features for Mixed-Integer Problems
ER -
TY - GEN
AU - Kraft, Kerstin
ID - 52527
TI - A Bouquet of Encounters With Faux Flora Across Time – A Visual Essay.
ER -
TY - GEN
AU - Gilich, Julian
AU - Meschut, Gerson
AU - Wiebicke, Felix
AU - Gröger, Benjamin
AU - Kuhtz, Moritz
AU - Koch, Ilja
AU - Gude, Maik
ID - 50060
T2 - 14th European Adhesion Conference (EURADH) & 7th World Congress on Adhesion and Related Phenomena (WCARP)
TI - Influences on the Flow Behavior of Highly Viscous Thermal Interface Materials in the Joining Process
ER -
TY - JOUR
AU - Schemmer, Susanne Jutta
ID - 52535
JF - Arbeitsmarktgeförderte berufliche Integration, berufsbildung, 77 (3). Bielefeld: wbv Publikation, 2-4.
TI - Innovation und neue Stabilitäten durch Krisenzeiten — zur Wandlungs- und Transformationsfähigkeit der beruflichen Integrationsförderung
ER -
TY - JOUR
AB - AbstractWe report on so‐called “hidden FLPs” (FLP: frustrated Lewis pair) consisting of a phosphorus ylide featuring a group 13 fragment in the ortho position of a phenyl ring scaffold to form five‐membered ring structures. Although the formation of the Lewis acid/base adducts was observed in the solid state, most of the title compounds readily react with carbon dioxide to provide stable insertion products. Strikingly, 0.3–3.0 mol% of the reported aluminum and gallium/carbon‐based ambiphiles catalyze the reduction of CO2 to methanol with satisfactory high selectivity and yields using pinacol borane as stoichiometric reduction equivalent. Comprehensive computational studies provided valuable mechanistic insights and shed more light on activity differences.
AU - Krämer, Felix
AU - Paradies, Jan
AU - Fernández, Israel
AU - Breher, Frank
ID - 52542
IS - 5
JF - Chemistry – A European Journal
KW - General Chemistry
KW - Catalysis
KW - Organic Chemistry
SN - 0947-6539
TI - Quo Vadis CO2 Activation: Catalytic Reduction of CO2 to Methanol Using Aluminum and Gallium/Carbon‐based Ambiphiles
VL - 30
ER -
TY - GEN
AU - Nassery, Idris
ID - 52546
TI - Mashood A. Baderin, Islamic Law. A Very Short Introduction
ER -
TY - JOUR
AB - In einem Seminar für angehende berufsbildende Lehrkräfte der beruflichen Fachrichtung Ernährung und Hauswirtschaft an der Technischen Universität Dresden wurde mittels digitaler Tools ein Property-Management-System dargestellt. Ziel ist es, Geschäfts- und Arbeitsprozesse in der Hotellerie sowie digitale Medien und ihre Einsatzmöglichkeiten innerhalb von Lehrveranstaltungen abzubilden.
AU - Härtel, Sandra
AU - Klatt, Christiane
AU - Meyer, Anja
ID - 48551
IS - 3
JF - HiBiFo – Haushalt in Bildung & Forschung
KW - General Medicine
SN - 2193-8806
TI - Digitalisiertes Arbeiten in gastgewerblichen Berufen – Umsetzung in der Hochschullehre
VL - 12
ER -
TY - CONF
AB - Abstract. Requirements of multi-material construction involve adjustments to standard joining techniques. Especially the growing importance of integral cast components poses additional engineering challenges for the industry. One approach to achieve these goals are adaptable joining elements formed by friction spinning. This approach uses friction-induced heat to form customisable joining elements to join sheets for different boundary conditions, even for brittle cast materials. It is possible to react immediately to adapt to the joining process inline and reduce the amount of different joining elements. As the joining partner serve casting plates of the aluminium casting alloy EN AC–AlSi9, which is processed in the sand casting. Joining hypoeutectic AlSi alloys constitutes a challenge because the brittle character of these cause cracks in the joint during conventional mechanical joining. Furthermore, the friction-induced heat of the novel joining process causes a finer microstructure in the hypoeutectic AlSi9 casting alloy. In particular, the eutectic Si is more fine-grained, resulting in higher joint ductility. This study indicates the joining suitability of a hypoeutectic aluminium casting alloy in combination with adaptive manufactured additional joining elements. Here, various mechanical and microstructural investigations validate the influence of the thermomechanical joining technique. In conclusion, the potential of this joining process is presented regarding the joinability of cast aluminium components.
AU - Borgert, Thomas
AU - Neuser, Moritz
AU - Wiens, Eugen
AU - Grydin, Olexandr
AU - Homberg, Werner
AU - Schaper, Mirko
ID - 43031
SN - 2474-395X
T2 - Materials Research Proceedings
TI - Influence of thermo-mechanical joining process on the microstructure of a hypoeutectic aluminium cast alloy
VL - 25
ER -
TY - JOUR
AB - Multi-material designs (MMD) are more frequently used in the automotive industry. Hereby, the combination of different materials, metal sheets, or cast components, is mechanically joined, often by forming joining processes. The cast components mostly used are high-strength, age-hardenable aluminium alloys of the Al–Si system. Here, the low ductility of the AlSi alloys constitutes a challenge because their brittle nature causes cracks during the joining process. However, by using suitable solidification conditions, it is possible to achieve a microstructure with improved mechanical and joining properties. For this study, we used the twin-roll casting process (TRC) with water-cooled rollers to manufacture the hypoeutectic AlSi10Mg for the first time. Hereby, high solidification rates are realisable, which introduces a microstructure that is about four times finer than in the sand casting process. In particular, it is shown that a fine microstructure close to the modification with Na or Sr is achieved by the high solidification rate in the TRC process without using these elements. Based on this, the mechanical properties increase, and especially the ductility is enhanced. Subsequent joining investigations validate the positive influence of a high solidification rate since cracks in joints can be avoided. Finally, a microstructure-property-joint suitability correlation is presented.
AU - Neuser, Moritz
AU - Schaper, Mirko
AU - Grydin, Olexandr
ID - 52405
IS - 4
JF - Journal of Manufacturing and Materials Processing
KW - Industrial and Manufacturing Engineering
KW - Mechanical Engineering
KW - Mechanics of Materials
SN - 2504-4494
TI - Mechanical and Microstructure Characterisation of the Hypoeutectic Cast Aluminium Alloy AlSi10Mg Manufactured by the Twin-Roll Casting Process
VL - 7
ER -
TY - JOUR
AB - Consistent lightweight construction in the area of vehicle manufacturing requires the increased use of multi-material combinations. This, in turn, requires an adaptation of standard joining techniques. In multi-material combinations, the importance of integral cast components, in particular, is increasing and poses additional technical challenges for the industry. One approach to solve these challenges is adaptable joining elements manufactured by a thermomechanical forming process. By applying an incremental and thermomechanical joining process, it is possible to react immediately and adapt the joining process inline to reduce the number of different joining elements. In the investigation described in this publication, cast plates made of the cast aluminium alloy EN AC-AlSi9 serve as joining partners, which are processed by sand casting. The joining process of hypoeutectic AlSi alloys is challenging as their brittle character leads to cracks in the joint during conventional mechanical joining. To solve this, the frictional heat of the novel joining process applied can provide a finer microstructure in the hypoeutectic AlSi9 cast alloy. In detail, its Si is finer-grained, resulting in higher ductility of the joint. This study reveals the thermomechanical joining suitability of a hypoeutectic cast aluminium alloy in combination with adaptively manufactured auxiliary joining elements.
AU - Borgert, Thomas
AU - Neuser, Moritz
AU - Hoyer, Kay-Peter
AU - Homberg, Werner
AU - Schaper, Mirko
ID - 47535
IS - 5
JF - Journal of Manufacturing and Materials Processing
KW - Industrial and Manufacturing Engineering
KW - Mechanical Engineering
KW - Mechanics of Materials
SN - 2504-4494
TI - Thermomechanical Joining of Hypoeutectic Aluminium Cast Plates
VL - 7
ER -
TY - CONF
AU - Grydin, Olexandr
AU - Neuser, Moritz
AU - Schaper, Mirko
ID - 52406
SN - 2195-4356
T2 - Conference: ICTP 2023: Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of PlasticityAt: Cannes (France)
TI - Influence of Shell Material on the Microstructure and Mechanical Properties of Twin-Roll Cast Al-Si-Mg Alloy
ER -
TY - CONF
AB - Automated Algorithm Configuration (AAC) usually takes a global perspective: it identifies a parameter configuration for an (optimization) algorithm that maximizes a performance metric over a set of instances. However, the optimal choice of parameters strongly depends on the instance at hand and should thus be calculated on a per-instance basis. We explore the potential of Per-Instance Algorithm Configuration (PIAC) by using Reinforcement Learning (RL). To this end, we propose a novel PIAC approach that is based on deep neural networks. We apply it to predict configurations for the Lin\textendash Kernighan heuristic (LKH) for the Traveling Salesperson Problem (TSP) individually for every single instance. To train our PIAC approach, we create a large set of 100000 TSP instances with 2000 nodes each \textemdash currently the largest benchmark set to the best of our knowledge. We compare our approach to the state-of-the-art AAC method Sequential Model-based Algorithm Configuration (SMAC). The results show that our PIAC approach outperforms this baseline on both the newly created instance set and established instance sets.
AU - Seiler, Moritz Vinzent
AU - Rook, Jeroen
AU - Heins, Jonathan
AU - Preuß, Oliver Ludger
AU - Bossek, Jakob
AU - Trautmann, Heike
ID - 48898
T2 - 2023 IEEE Symposium Series on Computational Intelligence (SSCI)
TI - Using Reinforcement Learning for Per-Instance Algorithm Configuration on the TSP
ER -
TY - JOUR
AU - Öhlschläger, Claudia
ID - 50527
JF - Scientia Poetica
TI - Die Totenmaske als Medium der kleinen Form. Zur Mehrdeutigkeit von Ahnenkult und Historie im frühen 20. und 21. Jahrhundert
VL - 27
ER -
TY - CHAP
AU - Tatari, Muna
AU - Ströbele, Christian
ED - Altmeyer et al., Stefan
ID - 52609
T2 - Herausforderung Mensch
TI - Anthropologie - strittig zwischen Christentum und Islam?
VL - 39
ER -
TY - JOUR
AU - Adler, Luise
AU - Tumat, Antje
ID - 52325
JF - Loccumer Pelikan. Religionspädagogisches Magazin für Schule und Gemeinde des Religionspädagogischen Instituts Loccum
TI - Kirche und Musiktheater. Ein ambivalentes Verhältnis in Schlaglichtern
VL - 4
ER -
TY - BOOK
AU - Fuchs, Christian
ID - 47550
TI - Grundlagen der Medienökonomie: Medien, Wirtschaft und Gesellschaft.
ER -
TY - JOUR
AU - Yang, Keke
AU - Meschut, Gerson
AU - Seitz, Georg
AU - Biegler, Max
AU - Rethmeier, Michael
ID - 48082
IS - 10
JF - Metals (Special Issue Embrittlement Phenomena in Steel Metallurgy)
SN - 2075-4701
TI - The Identification of a New Liquid Metal Embrittlement (LME) Type in Resistance Spot Welding of Advanced High-Strength Steels on Reduced Flange Widths
VL - 13
ER -
TY - JOUR
AB - AbstractIn Konstruktionen des Landmaschinenbaus aus dickeren Blechen (ca. 3–10 mm) findet die Klebtechnik bislang nur wenig Anwendung, obwohl sie in anderen Einsatzgebieten bereits ein etabliertes Fügeverfahren darstellt und viele Vorteile gegenüber anderen Fügeverfahren bietet, da es bisher an Regelwerken bei der Auslegung derartiger Verbindungen fehlt. Ein wesentliches Kriterium bei der Auslegung von Verbindungen im Landmaschinenbau ist die Ermüdungsfestigkeit aufgrund der langen Nutzungsphase der Produkte und der in der Landtechnik vorherrschenden Belastungscharakteristika. Geklebte Verbindungen weisen ein hervorragendes Verhalten bei zyklischer Belastung auf. Die steigenden Anforderungen im Hinblick auf Ressourceneffizienz und Leichtbau führen zu einem Umdenken, da durch den vermehrten Einsatz höherfester Stahlwerkstoffe in Kombination mit der Klebtechnik dieses als umsetzbar erscheint. Ziel ist die Entwicklung einer Methode zur Auslegung geklebter Verbindungen in Konstruktionen mit höherfesten Stahlwerkstoffen in Anlehnung an die FKM‐Richtlinie. Die betriebsrelevanten Beanspruchungen der Landtechnik werden analysiert und an speziellen Probekörpern untersucht. Dabei werden sowohl die mechanischen, thermischen und medialen Einflussfaktoren als auch der Einfluss der Klebfugengeometrie und von Betriebslastenkollektiven untersucht. Die Erkenntnisse werden in einer KMU‐relevanten Vorgehensweise zur Ermittlung von Abminderungsfaktoren zusammengefasst, wodurch die Auslegung der Bauteilfestigkeit sowohl statisch als auch dynamisch möglich ist.
AU - Göddecke, Johannes
AU - Göhrs, Tim
AU - Meschut, Gerson
AU - Große Gehling, Manfred
ID - 47042
IS - 8
JF - Stahlbau
KW - Metals and Alloys
KW - Mechanical Engineering
KW - Mechanics of Materials
KW - Building and Construction
KW - Civil and Structural Engineering
SN - 0038-9145
TI - Auslegungsmethode zum Kleben höchstfester Stahlwerkstoffe im Landmaschinenbau
VL - 92
ER -
TY - JOUR
AU - Chudalla, Nick
AU - Meschut, Gerson
AU - Teutenberg, Dominik
AU - Schneider, Miriam
AU - Smart, Dominic
ID - 46164
IS - 6
JF - adhäsion KLEBEN & DICHTEN
TI - Rechnergestützte Versagensanalyse geklebter Verbindungen
ER -
TY - THES
AU - Josch, Sebastian
ID - 52500
TI - Rheologische Charakterisierung von Frischbeton : Entwicklung eines adaptiven Rheometers und Untersuchung wandgleitunterdrückender Messgeometrien
ER -
TY - JOUR
AU - Heil, Rebekka
ID - 52617
IS - 5
JF - Zeitschrift des Bundesverbandes der Lehrkräfte für Berufsbildung e.V.
TI - Sprachbildung in technischen und pflegerischen Fächern der beruflichen Bildung. Bildung und Beruf.
ER -
TY - GEN
AU - Heil, Rebekka
AU - Prange, Sarah-Christin
ID - 52619
TI - ProDaZ Online-Tool Technik
ER -
TY - GEN
AU - Heil, Rebekka
ID - 52618
TI - ProDaZ Online-Tool Pflege.
ER -
TY - THES
AU - Gräßer, Melanie
ID - 52499
TI - Numerical Computation of Capillary Bridges between Directly Resolved Rough Interfaces
ER -
TY - GEN
AU - Peper, Frederik
ID - 52623
TI - Der Einfluss verschiedener Luftfilter auf die Geräuschemissionen von Personenkraftwagen
ER -
TY - GEN
AU - Wiebe, Robert
ID - 52630
TI - Qualifizierung des kyrogenen Mahlens zur Herstellung von gefüllten Kunststoffpulvern für das Lasersinterverfahren (Studienarbeit)
ER -
TY - GEN
AU - Aissani, Soufiane
ID - 52632
TI - Polystyrol Nanopartikel asl alternative Fließhilfsmittel für SLS Materialien (Studienarbeit)
ER -
TY - GEN
AU - Middelmann, Steffen
ID - 52627
TI - Der Einfluss verschiedener Partikelgrößenfraktionen eines PA12 Pulvers auf den Lasersinterprozess und auf die resultierenden Bauteileigenschaften
ER -
TY - GEN
AU - Schröder, Dominik
ID - 52629
TI - Untersuchung und Modellierung der Materialeigenschaften von lasergesintertem Polyamid 11 Pulver mit eincompoundierten Carbonfasern
ER -
TY - GEN
AU - Baaske, Benno
ID - 52628
TI - Schmelze-Temperatur-Messung im Lasersinter-Prozess und Korrelation zu temperaturabhängigen Schmelzviskositäten
ER -
TY - GEN
AU - Gröne, Sebastian
ID - 52633
TI - Numerical Investigations on the Flow Field and the Transfer Function of a Centrifugal-DMA
ER -
TY - GEN
AU - Otto, Moritz
ID - 52634
TI - Konstruktion einer Vorrichtung zur Probenherstellung für das Sentmanat-Dehnrheometer
ER -
TY - GEN
AU - Reimer, Jens
ID - 52635
TI - Entwicklung einer Datenbank hergestellter Nanomaterialien mittel Gasphasensynthese (Studienarbeit)
ER -