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Revision des Lerntypenmythos durch Konzeptwechselpodcasts im Lehramtsstudium
(2022-08-03)
Der Lerntypenmythos hat eine hohe Prävalenz unter (angehenden) Lehrkräften. Forschungsergebnisse zeigen, dass solche Mythen mit Konzeptwechseltexten entkräftet werden können. In Konzeptwechseltexten werden Fehl- und Fachkonzept vergleichend gegenübergestellt, wodurch kognitive Konflikte entstehen können, die wiederum zur kritischen Reflexion des eigenen Fehlkonzepts anregen können. Ob und unter welchen Voraussetzungen diese Erkenntnisse auf das Medium Podcast übertragbar sind, ist bisher unerforscht. In diesem Beitrag ...
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Warum beteiligen sich Coaches an Coaching-Forschung – und warum eigentlich nicht?
(2022-07-12)
In einer Online-Umfrage befragten wir 252 Coaches und analysierten ihre Einstellung zur Coaching-Forschung, Faktoren, die ihre Einstellung beeinflussen, und wie sich ihre Haltung wiederum auf ihre Bereitschaft zur Teilnahme an Coaching-Forschung auswirkt. Die Faktorenanalyse ergab vier verschiedene Einstellungsfaktoren: (1) Mehrwert und (2) Schaden durch Coaching-Forschung, (3) Effektivitätszweifel, (4) Aufwand im Zusammenhang mit der Teilnahme an Coaching-Forschung. Die Erfahrung der Coaches (d. h. Novizen vs. ...
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Industry 4.0-driven operations and supply chains for the circular economy: a bibliometric analysis
(2022-06-01)
The Industry 4.0 (I4.0) concept paves the way for the circular economy (CE) as advanced digital technologies enable sustainability initiatives. Hence, I4.0-driven CE-oriented supply chains (SCs) have improved sustainable performance, flexibility and interoperability. In order to smoothly embrace circular practices in digitally enabled SCs, quantitative techniques have been identified as crucial. Therefore, the intersection of I4.0, CE, supply chain management (SCM) and quantitative techniques is an emerging research ...
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A novel approach to construct self-assembled 3D MEMS arrays
(2022-08-20)
The paper presents the design and technological fabrication process of Yin or Yang-shaped, micron-sized electromechanical system (MEMS) elements displaying asymmetric hollow cylinders with two different curvatures of the cylinder shell. By adapting the process steps, two neighboring shutter MEMS elements can either be attached to each other to create asymmetric hollow cylinders or remain disconnected to form curled cylindrical or ellipsoidal tubes or tube fractions. A novel 3D self-organization process has been ...
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A combined FD-HB approximation method for steady-state vibrations in large dynamical systems with localised nonlinearities
(2022-09-21)
The approximation of steady-state vibrations within non-linear dynamical systems is well-established in academics and is becoming increasingly important in industry. However, the complexity and the number of degrees of freedom of application-oriented industrial models demand efficient approximation methods for steady-state solutions. One possible approach to that problem are hybrid approximation schemes, which combine advantages of standard methods from the literature. The common ground of these methods is their ...
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30 Years with Vladimir Gerdt
(2022-11-12)
My first meeting with Vladimir was in March 1990. I had started two months before as a Ph.D. student of Jacques Calmet in the computer science department of Karlsruhe University and Vladimir was visiting our computer algebra group for a seminar talk on his research. For him, it was one of his first travels into the west, as under Soviet rule he was not considered as sufficiently politically reliable for travels outside of the eastern block. It turned out that after his visit we were both riding on the same train to ...
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Development and Testing of the A1 Volumetric Air Sampler, an Automatic Pollen Trap Suitable for Long-Term Monitoring of eDNA Pollen Diversity
(2022-08-29)
Airborne pollen surveys provide information on various aspects of biodiversity and human health monitoring. Such surveys are typically conducted using the Burkard Multi-Vial Cyclone Sampler, but have to be technically optimized for eDNA barcoding. We here developed and tested a new airborne pollen trap, especially suitable for autonomous eDNA-metabarcoding analyses, called the A1 volumetric air sampler. The trap can sample pollen in 24 different tubes with flexible intervals, allowing it to operate independently in ...
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The Structure of the Toronto Alexithymia Scale (TAS-20): A Meta-Analytic Confirmatory Factor Analysis
(2022-07-26)
Alexithymia is defined as the inability of persons to describe their emotional states, to identify the feelings of others, and a utilitarian type of thinking. The most popular instrument to assess alexithymia is the Toronto Alexithymia Scale (TAS-20). Despite its widespread use, an ongoing controversy pertains to its internal structure. The TAS-20 was originally constructed to capture three different factors, but several studies suggested different factor solutions, including bifactor models and models with a method ...
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Using Spacing to Promote Lasting Learning in Educational Contexts. Promises and Challenges.
(2022-12-12)
Spacing repeated study phases across multiple sessions instead of studying and restudying the learning material in one session only is an effective strategy to promote lasting learning. However, most studies demonstrating the spacing effect were conducted in the laboratory, using simple verbal material. Learning in educational contexts differs regarding the complexity and coherence of the learning material and concerning the role of motivational and affective learner characteristics. Studies conducted in educational ...
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The Thermodynamic Stability of Membrane Proteins in Micelles and Lipid Bilayers Investigated with the Ferrichrom Receptor FhuA
(2022-05-13)
Extraction of integral membrane proteins into detergents for structural and functional studies often leads to a strong loss in protein stability. The impact of the lipid bilayer on the thermodynamic stability of an integral membrane protein in comparison to its solubilized form in detergent was examined and compared for FhuA from Escherichia coli and for a mutant, FhuAΔ5-160, lacking the N-terminal cork domain. Urea-induced unfolding was monitored by fluorescence spectroscopy to determine the effective free energies ...