TY - JOUR
AB - AbstractHeated tool butt welding is a method often used for joining thermoplastics, especially when the components are made out of different materials. The quality of the connection between the components crucially depends on a suitable choice of the parameters of the welding process, such as heating time, temperature, and the precise way how the parts are then welded. Moreover, when different materials are to be joined, the parameter values need to be tailored to the specifics of the respective material. To this end, in this paper, three approaches to tailor the parameter values to optimize the quality of the connection are compared: a heuristic by Potente, statistical experimental design, and Bayesian optimization. With the suitability for practice in mind, a series of experiments are carried out with these approaches, and their capabilities of proposing well-performing parameter values are investigated. As a result, Bayesian optimization is found to yield peak performance, but the costs for optimization are substantial. In contrast, the Potente heuristic does not require any experimentation and recommends parameter values with competitive quality.
AU - Gevers, Karina
AU - Tornede, Alexander
AU - Wever, Marcel Dominik
AU - Schöppner, Volker
AU - Hüllermeier, Eyke
ID - 33090
JF - Welding in the World
KW - Metals and Alloys
KW - Mechanical Engineering
KW - Mechanics of Materials
SN - 0043-2288
TI - A comparison of heuristic, statistical, and machine learning methods for heated tool butt welding of two different materials
ER -
TY - GEN
AB - In this article, we build on previous work to present an optimization algorithm for nonlinearly constrained multi-objective optimization problems. The algorithm combines a surrogate-assisted derivative-free trust-region approach with the filter method known from single-objective optimization. Instead of the true objective and constraint functions, so-called fully linear models are employed and we show how to deal with the gradient inexactness in the composite step setting, adapted from single-objective optimization as well. Under standard assumptions, we prove convergence of a subset of iterates to a quasi-stationary point and if constraint qualifications hold, then the limit point is also a KKT-point of the multi-objective problem.
AU - Berkemeier, Manuel Bastian
AU - Peitz, Sebastian
ID - 33150
T2 - arXiv:2208.12094
TI - Multi-Objective Trust-Region Filter Method for Nonlinear Constraints using Inexact Gradients
ER -
TY - JOUR
AB - AbstractNon-pharmaceutical interventions are an effective strategy to prevent and control COVID-19 transmission in the community. However, the timing and stringency to which these measures have been implemented varied between countries and regions. The differences in stringency can only to a limited extent be explained by the number of infections and the prevailing vaccination strategies. Our study aims to shed more light on the lockdown strategies and to identify the determinants underlying the differences between countries on regional, economic, institutional, and political level. Based on daily panel data for 173 countries and the period from January 2020 to October 2021 we find significant regional differences in lockdown strategies. Further, more prosperous countries implemented milder restrictions but responded more quickly, while poorer countries introduced more stringent measures but had a longer response time. Finally, democratic regimes and stronger manifested institutions alleviated and slowed down the introduction of lockdown measures.
AU - Redlin, Margarete
ID - 33221
JF - Journal of Regulatory Economics
KW - Economics and Econometrics
SN - 0922-680X
TI - Differences in NPI strategies against COVID-19
ER -
TY - JOUR
AB - AbstractWe provide a partial equilibrium model wherein AI provides abilities combined with human skills to provide an aggregate intermediate service good. We use the model to find that the extent of automation through AI will be greater if (a) the economy is relatively abundant in sophisticated programs and machine abilities compared to human skills; (b) the economy hosts a relatively large number of AI-providing firms and experts; and (c) the task-specific productivity of AI services is relatively high compared to the task-specific productivity of general labor and labor skills. We also illustrate that the contribution of AI to aggregate productive labor service depends not only on the amount of AI services available but on the endogenous number of automated tasks, the relative productivity of standard and IT-related labor, and the substitutability of tasks. These determinants also affect the income distribution between the two kinds of labor. We derive several empirical implications and identify possible future extensions.
AU - Gries, Thomas
AU - Naudé, Wim
ID - 33220
IS - 1
JF - Journal for Labour Market Research
KW - General Medicine
SN - 2510-5019
TI - Modelling artificial intelligence in economics
VL - 56
ER -
TY - CONF
AU - Daymude, Joshua J.
AU - Richa, Andréa W.
AU - Scheideler, Christian
ED - Aspnes, James
ED - Michail, Othon
ID - 33230
T2 - 1st Symposium on Algorithmic Foundations of Dynamic Networks, SAND 2022, March 28-30, 2022, Virtual Conference
TI - Local Mutual Exclusion for Dynamic, Anonymous, Bounded Memory Message Passing Systems
VL - 221
ER -
TY - JOUR
AU - Gries, Thomas
AU - Müller, Veronika
AU - Jost, John T.
ID - 33219
IS - 2
JF - Psychological Inquiry
KW - General Psychology
SN - 1047-840X
TI - The Market for Belief Systems: A Formal Model of Ideological Choice
VL - 33
ER -
TY - CONF
AU - Peeters, Hendrik
AU - Habig, Sebastian
AU - Fechner, Sabine
ED - Habig, Sebastian
ED - van Vorst, Helena
ID - 33224
KW - augmented reality
KW - modelle
KW - digitale Medien
T2 - Unsicherheit als Element von naturwissenschaftsbezogenen Bildungsprozessen
TI - Einbettung von Augmented Reality in den Experimentierprozess
VL - 42
ER -
TY - CHAP
AB - Das Programm Maschinenbau in China (mb-cn) ist eine spezielle Ausprägung der Paderborner Masterstudiengänge Maschinenbau, Wirtschafts- und Chemieingenieurwesen. Im Rahmen dieses Programms wird der technisch-interkulturelle Fachsprachkurs »Fachspezifisches Chinesisch« angeboten, der die praktische Anwendung des Sprachenlernens mit studiengangsbezogenen Angeboten kombiniert. Ziel des Kurses ist es, die Studierenden zu befähigen eine Hanyu-Shuiping-Kaoshi-Prüfung (HSK) auf Niveaustufe 2 zu bestehen sowie ihnen vertiefendes Fachvokabular aus den Fachbereichen Mathematik, Informatik, Wirtschaft, Technik und Maschinenbau zu vermitteln. Ausgewählte Beispiele in der fachsprachlichen Anwendung beziehensich auf die Beschreibung eines Gegenstandes wie den Getriebeaufbau und das Wirkprinzip eines Prüfstandes. Der Artikel soll als Evaluation und Rückschau auf das Pilotprojekt der Universität Paderborn dienen und Hilfestellung geben, wie die Konzeption und Umsetzung (auch unter Coronabedingungen) gelingen kann.
AU - Hambach, Dennis
ED - Thelen, Gabriele
ED - Obendiek, Helena
ED - Bai, Yinchun
ID - 33233
SN - 2699-7681
T2 - Handbuch China-Kompetenzen
TI - »Fachspezifisches Chinesisch« an der Universität Paderborn
ER -
TY - CHAP
AB - Das seit den 1990er Jahren andauernde Engagement der Universität Paderborn in China hat zur Ausbildung von technisch-interkultureller China-Kompetenz in vielen Bereichengeführt. Die Universität Paderborn (UPB) unterhält derzeit sechs intensive Austauschpartnerschaften mit chinesischen Hochschulen. Im Rahmen der Masterstudiengänge Maschinenbau, Wirtschafts- und Chemieingenieurwesen sowie Wirtschaftsingenieurwesen wird die Studienausrichtung Maschinenbau in China (mb-cn) angeboten. Diese Studienausrichtung wird inenger Zusammenarbeit mit namhaften, global agierenden Partnerfirmen durchgeführt, die eigene Tochterfirmen in China oder eine starke Verbindung zu chinesischen Unternehmen haben. Zusätzlich können die Studierenden ein Fachpraktikum in einem deutschen Unternehmen in China absolvieren. Im Rahmen des Artikels wird das mb-cn-Projekt ausführlich vorgestellt. Die hierbeigeschilderten Erfahrungen mit dem Aufbau der Kooperation sowie die gezogenen Rückschlüsse auf die Ergebnisse des Projekts sollen dazu dienen, andere Einrichtungen beim Aufbau ähnlicher Kooperation zu unterstützen.
AU - Denzer, Vera
AU - Hambach, Dennis
ED - Thelen, Gabriele
ED - Obendiek, Helena
ED - Bai, Yinchun
ID - 33232
SN - 2699-7681
T2 - Handbuch China-Kompetenzen
TI - Maschinenbau in China
ER -
TY - CONF
AU - Götte, Thorsten
AU - Scheideler, Christian
ED - Agrawal, Kunal
ED - Lee, I-Ting Angelina
ID - 33240
T2 - SPAA ’22: 34th ACM Symposium on Parallelism in Algorithms and Architectures, Philadelphia, PA, USA, July 11 - 14, 2022
TI - Brief Announcement: The (Limited) Power of Multiple Identities: Asynchronous Byzantine Reliable Broadcast with Improved Resilience through Collusion
ER -
TY - CHAP
AU - Herzig, Bardo
ED - Reinke de Buitrago, S.
ID - 33248
SN - 978-3658370428
T2 - Radikalisierungsnarrative online. Perspektiven und Lehren aus Wissenschaft und Prävention
TI - Medienbildung als Radikalisierungsprävention?
ER -
TY - CHAP
AU - Herzig, Bardo
AU - Martin, Alexander
ED - Püttmann, C.
ED - Wortmann, E.
ID - 33247
SN - 978-3825256203
T2 - Handbuch Pädagogikunterricht
TI - Lehren und Lernen mit (digitalen) Medien im Pädagogikunterricht
ER -
TY - CONF
AU - Claes, Leander
AU - Feldmann, Nadine
AU - Schulze, Veronika
AU - Jurgelucks, Benjamin
AU - Walther, Andrea
AU - Henning, Bernd
ID - 6553
T2 - Fortschritte der Akustik - DAGA 2022
TI - Identification of piezoelectric material parameters using optimised multi-electrode specimens
ER -
TY - CHAP
AU - Goller, Michael
AU - Hilkenmeier, Frederic
ID - 33268
SN - 2210-5549
T2 - Methods for Researching Professional Learning and Development
TI - PLS-Based Structural Equation Modelling: An Alternative Approach to Estimating Complex Relationships Between Unobserved Constructs
ER -
TY - CHAP
AU - Goller, Michael
AU - Kyndt, Eva
AU - Paloniemi, Susanna
AU - Damşa, Crina
ID - 33266
SN - 2210-5549
T2 - Methods for Researching Professional Learning and Development
TI - Addressing Methodological Challenges in Research on Professional Learning and Development
ER -
TY - CHAP
AU - Leidig, Susann
AU - Köhler, Hanna
AU - Caruso, Carina
AU - Goller, Michael
ID - 33271
SN - 2210-5549
T2 - Methods for Researching Professional Learning and Development
TI - Q Method: Assessing Subjectivity Through Structured Ranking of Items
ER -
TY - CHAP
AU - Steffen, Bianca
AU - Pouta, Maikki
ID - 33269
SN - 2210-5549
T2 - Methods for Researching Professional Learning and Development
TI - Participant’s Video Annotations as a Database to Measure Professional Development
ER -
TY - CHAP
AU - Rausch, Andreas
AU - Goller, Michael
AU - Steffen, Bianca
ID - 33267
SN - 2210-5549
T2 - Methods for Researching Professional Learning and Development
TI - Uncovering Informal Workplace Learning by Using Diaries
ER -
TY - CHAP
AU - Harteis, Christian
ID - 33270
SN - 2210-5549
T2 - Methods for Researching Professional Learning and Development
TI - Delphi-Technique as a Method for Research on Professional Learning
ER -
TY - JOUR
AU - Goller, Michael
AU - Steffen, Bianca
AU - Lau, D.
ID - 32094
IS - 33
JF - Professionalisierung der Gesundheitsberufe. Berufliche und hochschulische Bildung im Spiegel aktueller Forschung
TI - Kompetenzerwerb auf der Schulstation: Eine Mixed-Methods-Replikationsstudie
ER -