TY - GEN
AU - Treder, Alexandra
ID - 50208
T2 - Forschungsportal für Spracherwerb und Migration (daz-portal)
TI - Alexandra Treder (Universität Paderborn) rezensiert: Döll, Marion & Michalak, Magdalena (2023): Deutsch als Zweitsprache und inklusive Bildung. [Deutsch als Zweitsprache – Positionen, Perspektiven, Potenziale, Bd. 3]. Münster: Waxmann, 142 Seiten. ISBN 978-3-8309-4711-0.
VL - 26
ER -
TY - BOOK
ED - Tatari, Muna
ED - Husic, Ahmed
ID - 52590
TI - The Divine Attributes in Classical Islamic Thought and Con-temporary Islamic Theology
ER -
TY - JOUR
AB - Data-driven models for nonlinear dynamical systems based on approximating the underlying Koopman operator or generator have proven to be successful tools for forecasting, feature learning, state estimation, and control. It has become well known that the Koopman generators for control-affine systems also have affine dependence on the input, leading to convenient finite-dimensional bilinear approximations of the dynamics. Yet there are still two main obstacles that limit the scope of current approaches for approximating the Koopman generators of systems with actuation. First, the performance of existing methods depends heavily on the choice of basis functions over which the Koopman generator is to be approximated; and there is currently no universal way to choose them for systems that are not measure preserving. Secondly, if we do not observe the full state, we may not gain access to a sufficiently rich collection of such functions to describe the dynamics. This is because the commonly used method of forming time-delayed observables fails when there is actuation. To remedy these issues, we write the dynamics of observables governed by the Koopman generator as a bilinear hidden Markov model, and determine the model parameters using the expectation-maximization (EM) algorithm. The E-step involves a standard Kalman filter and smoother, while the M-step resembles control-affine dynamic mode decomposition for the generator. We demonstrate the performance of this method on three examples, including recovery of a finite-dimensional Koopman-invariant subspace for an actuated system with a slow manifold; estimation of Koopman eigenfunctions for the unforced Duffing equation; and model-predictive control of a fluidic pinball system based only on noisy observations of lift and drag.
AU - Otto, Samuel E.
AU - Peitz, Sebastian
AU - Rowley, Clarence W.
ID - 33461
IS - 1
JF - SIAM Journal on Applied Dynamical Systems
TI - Learning Bilinear Models of Actuated Koopman Generators from Partially-Observed Trajectories
VL - 23
ER -
TY - THES
AB - Ultraschallsysteme für das Herstellen für Bond- und Schweißverbindungen in der Halbleiterfertigung zeigen auf Grund des Betriebes unter hohen Anregungsniveaus nichtlineare Materialeigenschaften. Dabei wirken unterschiedliche Einflussfaktoren auf die elektrischen Eigenschaften und die mechanischen Übertragungscharakteristiken der Ultraschallsysteme ein. Die Herausforderungen ein solches geprägtes System auszulegen oder effizient und zuverlässig zu betreiben, sind aufgrund der Nichtlinearitäten relativ groß.
Da für die Beschreibung der nichtlinearen Materialbeziehungen nur wenige Modelle und kaum quantitative Angaben vorliegen, werden die komplexen Wechselwirkungen von Materialparametern, Geometrie und Vorspannung des Schwingers, Betriebsgrößen (Strom, Spannung), Temperatur und Prozesslasten durch systematische Untersuchungen von Keramiken und Langevin-Schwingern messtechnisch erfasst. Aus den Messergebnissen werden einerseits eindimensionale Modelle für Voruntersuchungen als auch vollständige Materialparametersätze für die Simulation mittels dreidimensionaler FE-Modelle hergeleitet.
Eine Methodik zur Ermittlung der Materialparameter und ein auf iterativen Simulationen von FE-Modellen basierendes Werkzeug zur Simulation der komplexen Wechselwirkungen werden vorgestellt. Anhand eines exemplarischen Ultraschallsystems wird gezeigt, dass die Wirkungen temperaturbedingter Vorspannungsverluste, Änderungen des elektrischen Klemmenverhaltens und Amplituden- und Frequenzänderungen während des Betriebes bei großen Amplituden und Prozesslasten durch die Variationen des Keramikvolumens und der Keramikposition positiv beeinflusst werden können.
AU - Dymel, Collin
ID - 52611
KW - Nichtlineares piezoelektrisches Verhalten
KW - Dehnungsabhängigkeit
KW - Vorspannungseinfluss
KW - Temperatureinfluss
KW - Lasteinfluss
KW - Langevin-Schwinger
KW - Ultraschallwandler
KW - Ultraschallbonden
KW - FEM-Modell
KW - Ultraschallschweißen
KW - BVD-Modell
SN - 9783844093964
TI - Modellbasierte Entwicklung von Ultraschallwandlern unter der Berücksichtigung von Nichtlinearitäten
VL - 16
ER -
TY - JOUR
AB - Resistance spot‐welded joints containing press‐hardened steels are seen to exhibit a fracture mode called total dome failure, where the weld nugget completely separates from one steel sheet along the weld nugget edge. The effect of weld nugget shape and material property gradients is studied based on damage mechanics modeling and experimental validation to shed light on the underlying influencing factors. For a three‐steel‐sheet spot‐welded joint combining DP600 (1.5 mm)–CR1900T (1.0 mm)–CR1900T (1.0 mm), experiments under shear loading reveal that fracture occurs in the DP600 sheet along the weld nugget edge. In subsequent numerical simulation studies with damage mechanics models whose parameters are independently calibrated for every involved material configuration, three variations of the geometrical joint configuration are considered—an approximation of the real joint, one variation with a steeper weld nugget shape, and one variation with a less pronounced gradient between weld nugget material and heat‐affected zone material properties. The results of the finite‐element simulations show that a shallower weld nugget and a more pronounced material gradient lead to a faster increase of plastic strain at the edge of the weld nugget and promote the occurrence of total dome failure.
AU - Schuster, Lilia
AU - Olfert, Viktoria
AU - Sherepenko, Oleksii
AU - Fehrenbach, Clemens
AU - Song, Shiyuan
AU - Hein, David
AU - Meschut, Gerson
AU - Biro, Elliot
AU - Münstermann, Sebastian
ID - 50726
JF - steel research international
KW - Materials Chemistry
KW - Metals and Alloys
KW - Physical and Theoretical Chemistry
KW - Condensed Matter Physics
SN - 1611-3683
TI - Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints
ER -
TY - THES
AU - Hassel, Richard
ID - 52501
TI - Zur Abscheidung von Tröpfchen-Aerosolen in filternden Abscheidern
ER -
TY - JOUR
AB - Der Beitrag stellt ein Qualifizierungsformat für (multi)professionelle Bildungsakteur*innen zur entwicklungsförderlichen Nutzung von Selbstinszenierungspraktiken vor. Die Konzeption und Entwicklung des Weiterbildungsformats ist im Rahmen eines Forschungs- und Entwicklungsprojekts für Jugendliche in ausbildungsvorbereitenden Bildungsgängen angesiedelt, die einen besonderen Förderbedarf im Zuge des Übergangs von der Schule in die Berufs- und Arbeitswelt aufweisen. Diese sollen durch offene und kreative Selbstdarstellungs- und Erhebungsformate dabei unterstützt werden, ihre Stärken zu erkennen, zu dokumentieren und sichtbar zu machen, sowie hierüber gleichsam für den Übergang Schule-Beruf gestärkt werden.
Wir stellen zunächst den Projektrahmen vor und schärfen in diesem Kontext den Zugang über eine Grundlegung zu Selbstinszenierung sowie deren Potenziale im Kontext der inklusiven Berufsbildung und zur Stärkung der Zielgruppe. Das im Projekt entwickelte Rahmenkonzept bietet eine Orientierung zur standort- respektive bildungsgangbezogenen Anpassung und stellt damit Herausforderungen und einen entsprechenden Qualifizierungsbedarf für Bildungsakteur*innen heraus. Darauf basierend stellen wir die konzeptionellen Grundlagen, die methodische und inhaltliche Ausgestaltung zum Ansatz der ‚Kollegialen Weiterbildung‘ zur entwicklungsförderlichen Nutzung von Selbstinszenierungspraktiken vor und adressieren u. a. das Zusammenspiel von innovativer Entwicklung, Schärfung von Rollen und Kompetenzentwicklung der Bildungsakteur*innen. Abschließend diskutieren wir die konzeptionellen Entwicklungen und den Implementations- und Transferansatz.
Abstract
The article presents a qualification format for multi-professional actors in the educational context on the developmental use of 'Selbstinszenierungspraktiken' (which means a combination of practices for self-awareness, self-realisation and self-acceptance in a process which we are developing in our project). The concept and development of the further education format is located within the framework of a research and development project for young people with wide-ranging needs in pre-vocational education units at the transition from school to work. They will be supported in recognizing, documenting and showing their strengths through open and creative self-expression and survey formats, as well as being strengthened for the transition from school to work.
First, we present the project framework and clarify the approach by a theoretical grounding of ‚Selbstinszenierung‘ (similar to a combination of self-awareness, self-realisation and self-acceptance) as well as its potentials in the context of inclusive vocational education by strengthening the target group. The developed framework provides a basis for the adaptation of the concept to a specific location or educational programme and highlights challenges and qualification needs for actors in the educational context. We present the conceptual basis, the methodological and content-related design of the collegial training approach on the developmental use of 'Selbstinszenierungspraktiken'. We address the interaction of innovative development, clarification of roles and competence development of actors in the educational context. Finally, we discuss the conceptual developments and the implementation and transfer approach.
AU - Kundisch, Heike
AU - Kremer, H.-Hugo
AU - Otto, Franziska
ID - 52620
IS - 3
JF - QfI - Qualifizierung für Inklusion. Online-Zeitschrift zur Forschung über Aus-, Fort- und Weiterbildung pädagogischer Fachkräfte
KW - General Medicine
SN - 2699-2477
TI - Selbstinszenierungspraktiken als Weg zu Stärkenorientierung, Selbstbestimmung und Teilhabe – eine Kollegiale Weiterbildung für multiprofessionelle Akteursgruppen im (inklusiven) Übergang Schule-Beruf
VL - 5
ER -
TY - JOUR
AB - AbstractFootball is one of the most played sports in the world and kicking with adequate accuracy increases the likelihood of winning a competition. Although studies with different target-directed movements underline the role of distinctive cortical activity on superior accuracy, little is known about cortical dynamics associated with kicking. Mobile electroencephalography is a popular tool to investigate cortical modulations during movement, however, inherent and artefact-related pitfalls may obscure the reliability of functional sources and their activity. The purpose of this study was therefore to describe consistent cortical dynamics underlying target-directed pass-kicks based on test–retest reliability estimates. Eleven participants performed a target-directed kicking task at two different sessions within one week. Electroencephalography was recorded using a 65-channel mobile system and behavioural data were collected including motion range, acceleration and accuracy performance. Functional sources were identified using independent component analysis and clustered in two steps with the components of first and subsequently both sessions. Reliability estimates of event-related spectral perturbations were computed pixel-wise for participants contributing with components of both sessions. The parieto-occipital and frontal clusters were reproducible for the same majority of the sample at both sessions. Their activity showed consistent alpha desyhronization and theta sychnronisation patterns with substantial reliability estimates revealing visual and attentional demands in different phases of kicking. The findings of our study reveal prominent cortical demands during the execution of a target-directed kick which may be considered in practical implementations and provide promising academic prospects in the comprehension and investigation of cortical activity associated with target-directed movements.
AU - Piskin, Daghan Yuksel
AU - Büchel, Daniel
AU - Lehmann, Tim
AU - Baumeister, Jochen
ID - 52631
JF - Cognitive Neurodynamics
KW - Cognitive Neuroscience
SN - 1871-4080
TI - Reliable electrocortical dynamics of target-directed pass-kicks
ER -
TY - GEN
AU - Zink, Timm Florian
ID - 52639
TI - Untersuchung des Lösungsmitellseinflusses auf die Synthese von Manganoxid-Nanopartikeln in der Flammenspraypyrolyse
ER -
TY - JOUR
AB - ELDIRK methods are defined to have an Explicit Last stage in the general Butcher array of Diagonal Implicit Runge-Kutta methods, with the consequence, that no additional system of equations must be solved, compared to the embedded RK method. Two general formulations for second- and third-order ELDIRK methods have been obtained recently in Mahnken [21] with specific schemes, e.g. for the embedded implicit Euler method, the embedded trapezoidal-rule and the embedded Ellsiepen method. In the first part of this paper, we investigate some general stability characteristics of ELDIRK methods, and it will be shown that the above specific RK schemes are not A-stable. Therefore, in the second part, the above-mentioned general formulations are used for further stability investigations, with the aim to construct new second- and third-order ELDIRK methods which simultaneously are A-stable. Two numerical examples are concerned with the curing for a thermosetting material and phase-field RVE modeling for crystallinity and orientation. The numerical results confirm the theoretical results on convergence order and stability.
AU - Mahnken, Rolf
AU - Westermann, Hendrik
ID - 52233
JF - Computational Mechanics
KW - Applied Mathematics
KW - Computational Mathematics
KW - Computational Theory and Mathematics
KW - Mechanical Engineering
KW - Ocean Engineering
KW - Computational Mechanics
SN - 0178-7675
TI - Construction of A-stable explicit last-stage diagonal implicit Runge–Kutta (ELDIRK) methods
ER -
TY - CHAP
AU - Domke, Marius
AU - Fröhlich, Nadine
AU - Eickelmann, Birgit
AU - Pink, Sara
ED - Herzig, B.
ED - Eickelmann, Birgit
ED - Schwabl, F.
ED - Schulze, J.
ED - Niemann, Jan
ID - 51128
T2 - Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven
TI - Digitalisierungsbezogene Lehrkräftebildung als Gegenstand internationaler Schulleistungsstudien
ER -
TY - JOUR
AU - Herdramm, Henrike
ID - 52652
JF - BloKK. Der Blog des Zentrums für Komparative Theologie und Kulturwissenschaften
KW - Ideologiekritik
KW - Tiertheologie
KW - Tierethik
TI - Das Potenzial von Ideologiekritik im Religionsunterricht
ER -
TY - GEN
AB - Context
Static analyses are well-established to aid in understanding bugs or vulnerabilities during the development process or in large-scale studies. A low false-positive rate is essential for the adaption in practice and for precise results of empirical studies. Unfortunately, static analyses tend to report where a vulnerability manifests rather than the fix location. This can cause presumed false positives or imprecise results.
Method
To address this problem, we designed an adaption of an existing static analysis algorithm that can distinguish between a manifestation and fix location, and reports error chains. An error chain represents at least two interconnected errors that occur successively, thus building the connection between the fix and manifestation location. We used our tool CogniCryptSUBS for a case study on 471 GitHub repositories, a performance benchmark to compare different analysis configurations, and conducted an expert interview.
Result
We found that 50 % of the projects with a report had at least one error chain. Our runtime benchmark demonstrated that our improvement caused only a minimal runtime overhead of less than 4 %. The results of our expert interview indicate that with our adapted version participants require fewer executions of the analysis.
Conclusion
Our results indicate that error chains occur frequently in real-world projects, and ignoring them can lead to imprecise evaluation results. The runtime benchmark indicates that our tool is a feasible and efficient solution for detecting error chains in real-world projects. Further, our results gave a hint that the usability of static analyses may benefit from supporting error chains.
AU - Wickert, Anna-Katharina
AU - Schlichtig, Michael
AU - Vogel, Marvin
AU - Winter, Lukas
AU - Mezini, Mira
AU - Bodden, Eric
ID - 52663
KW - Static analysis
KW - error chains
KW - false positive re- duction
KW - empirical studies
TI - Supporting Error Chains in Static Analysis for Precise Evaluation Results and Enhanced Usability
ER -
TY - CHAP
AU - Labusch, Amelie
AU - Eickelmann, Birgit
AU - Casamassima, Gianna
AU - Drossel, Kerstin
AU - Gudmundsdottir, G.B.
AU - Kazani, A.
AU - Mifsud, L.
AU - Symeonaki, M.
AU - Teidla-Kunitsõn, G.
ED - Holmarsdottir, H.B.
ED - Seland, I.
ED - Hyggen, C.
ED - Roth, M.
ID - 51098
T2 - Understanding the everyday digital lives of children and young people
TI - Children and young people’s ICT experiences in school education: Participatory research design to engage children and young people as experts in research
ER -
TY - CHAP
AU - Drossel, Kerstin
AU - Oldak, Anna
AU - Bette, Ricarda
AU - Eickelmann, Birgit
AU - Schreyer, P.
ED - Herzig, B.
ED - Eickelmann, Birgit
ED - Schwabl, F.
ED - Schulze, J.
ED - Niemann, Jan
ID - 51096
T2 - Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven
TI - Videoanalysen zu unterrichtlichen Lehr- und Lernprozessen unter den Bedingungen der Digitalität an organisational resilienten Schulen in Deutschland
ER -
TY - DATA
AB - This is the data set of the project Henze-Digital. It contains project specific authority files (e.g., persons, organizations, places) and editions (e.g., letters, documents).
AU - Ried, Dennis
AU - Capelle, Irmlind
AU - Minetti, Elena
AU - Tumat, Antje
ID - 52684
TI - HenDi-Data (data package) v3.1.0
ER -
TY - DATA
AB - This is the data set of the project Henze-Digital. It contains project specific authority files (e.g., persons, organizations, places) and editions (e.g., letters, documents).
AU - Capelle, Irmlind
AU - Minetti, Elena
AU - Ried, Dennis
AU - Tumat, Antje
ID - 51677
TI - HenDi-Data (data package) v3.0.0
ER -
TY - DATA
AU - Ried, Dennis
AU - Minetti, Elena
AU - Capelle, Irmlind
ID - 52683
TI - HenDi-ODD v3.1.0
ER -
TY - DATA
AU - Ried, Dennis
ID - 52685
TI - HenDi-WebApp v3.1.0
ER -
TY - GEN
AB - We prove Feynman-Kac formulas for the semigroups generated by selfadjoint
operators in a class containing Fr\"ohlich Hamiltonians known from solid state
physics. The latter model multi-polarons, i.e., a fixed number of quantum
mechanical electrons moving in a polarizable crystal and interacting with the
quantized phonon field generated by the crystal's vibrational modes. Both the
electrons and phonons can be confined to suitable open subsets of Euclidean
space. We also include possibly very singular magnetic vector potentials and
electrostatic potentials. Our Feynman-Kac formulas comprise Fock space
operator-valued multiplicative functionals and can be applied to every vector
in the underlying Hilbert space. In comparison to the renormalized Nelson
model, for which analogous Feynman-Kac formulas are known, the analysis of the
creation and annihilation terms in the multiplicative functionals requires
novel ideas to overcome difficulties caused by the phonon dispersion relation
being constant. Getting these terms under control and generalizing other
construction steps so as to cover confined systems are the main achievements of
this article.
AU - Hinrichs, Benjamin
AU - Matte, Oliver
ID - 52691
T2 - arXiv:2403.12147
TI - Feynman-Kac formulas for semigroups generated by multi-polaron Hamiltonians in magnetic fields and on general domains
ER -
TY - JOUR
AU - Ahmed, Qazi Arbab
AU - Wiersema, Tobias
AU - Platzner, Marco
ID - 52686
JF - Journal of Hardware and Systems Security
KW - General Engineering
KW - Energy Engineering and Power Technology
SN - 2509-3428
TI - Post-configuration Activation of Hardware Trojans in FPGAs
ER -
TY - CHAP
AU - Althoff, Sebastian
ED - Gasparavicius, Gediminas
ED - Toteva, Maia
ED - Williams, Tom
ID - 47619
T2 - Walking with the Enemy: Reclaiming the Language of Power and Manipulation in the Post-Truth Era
TI - Walking with Images: Mimetic-Automatic Production in Hasan Elahi’s Tracking Transcience
ER -
TY - JOUR
AU - Fuchs, Christian
ID - 52690
IS - 1
JF - tripleC: Communication, Capitalism & Critique
TI - Vincent Mosco’s Critical-Humanist Political Economy of Communication
VL - 22
ER -
TY - JOUR
AU - Althoff, Sebastian
ID - 52693
IS - 1
JF - Cultural Politics
TI - The Condemnation of Hate and the Violence of the Status Quo
VL - 20
ER -
TY - JOUR
AB - We explore the polarization hysteretic behaviour and field-dependent permittivity of ferroelectric-dielectric 2D materials formed by random dispersions of low permittivity inclusions in a ferroelectric matrix, using finite element simulations. We show how the degree of impenetrability of dielectric inclusions plays a substantial role in controlling the coercive field, remnant and saturation polarizations of the homogenized materials. The results highlight the significance of the degree of impenetrability of inclusion in tuning the effective polarization properties of such ferroelectric composites: coercive field drops significantly as percolation threshold is attained and remnant polarization decreases faster than a linear decay.
AU - Myroshnychenko, Viktor
AU - Mulavarickal Jose, Pious Mathews
AU - Farheen, Henna
AU - Ejaz, Shafaq
AU - Brosseau, Christian
AU - Förstner, Jens
ID - 52700
IS - 4
JF - Physica Scripta
KW - tet_topic_ferro
SN - 0031-8949
TI - From Swiss-cheese to discrete ferroelectric composites: assessing the ferroelectric butterfly shape in polarization loops
VL - 99
ER -
TY - CHAP
AU - Gövert, Andre
AU - Niederhaus, Constanze
AU - Blumberg, Eva
ID - 52505
T2 - Mehrsprachigkeit in der Schule – Sprachbildung im und durch Sachunterricht
TI - Professionalisierung für Sprachbildung aus Sicht von Sachunterrichtsstudierenden – Langzeitwirkungen eines Vertiefungsseminars in der ersten Phase der sachunterrichtsdidaktischen Lehrer* innenbildung.
ER -
TY - CHAP
AU - Vasylyeva, Tetyana
AU - Ehmke, Timo
AU - Gövert, Andre
AU - Kassem, Amani
AU - Niederhaus, Constanze
ID - 52506
T2 - Mehrsprachigkeit in der Schule – Sprachbildung im und durch Sachunterricht
TI - DaZ-Kompetenzen angehender Lehrkräfte des Faches Sachunterricht sowie der aus dem Sachunterricht hervorgehenden Fächer
ER -
TY - JOUR
AB - ABSTRACT
OBJECTIVE:
The aim of this analysis was to investigate whether habitual intake of total dairy (TD) or different dairy types (liquid, solid, fermented, not-fermented, low-fat, high-fat, low-sugar and high-sugar dairy) during adolescence is associated with biomarkers of low-grade inflammation as well as risk factors of type 2 diabetes in young adulthood.
DESIGN:
Multivariable linear regression analyses were used to investigate prospective associations between estimated TD intake as well as intake of different types of dairy and a pro-inflammatory score, based on hsCRP, IL-6, IL-18, leptin and adiponectin, and insulin resistance assessed as HOMA2-IR in an open cohort study.
SETTING:
Dortmund, Germany
PARTICIPANTS:
Data from participants (n=375) of the DOrtmund Nutritional and Anthropometric Longitudinally Designed (DONALD) study were included, for whom at least two 3-day weighed dietary records during adolescence (median age: 11 years) and one blood sample in young adulthood (>18 years) were available.
RESULTS:
There was no statistically significant association between TD intake or intake of any dairy type and the pro-inflammatory score (all p>0.05). TD intake as well as each dairy type intake and insulin resistance also showed no association (all p>0.05).
CONCLUSIONS:
The habitual intake of dairy or individual types of dairy during adolescence does not seem to have a major impact on low-grade systemic inflammation and insulin resistance in the long term. There was no indication regarding a restriction of dairy intake for healthy children and adolescents in terms of diabetes risk reduction.
AU - Hohoff, E
AU - Jankovic, N
AU - Perrar, I
AU - Schnermann, ME
AU - Herder, C
AU - Nöthlings, U
AU - Libuda, Lars
AU - Alexy, U
ID - 52713
JF - Public Health Nutrition
KW - Public Health
KW - Environmental and Occupational Health
KW - Nutrition and Dietetics
KW - Medicine (miscellaneous)
SN - 1368-9800
TI - The association between dairy intake in adolescents with inflammation and risk markers of type 2 diabetes during young adulthood – results of the DONALD study
ER -
TY - JOUR
AB - The editorial introduces the special issue Knowledge by Design in Education: Key challenges and experiences from research practice, posing key questions, offering an insight into ongoing discussions, and presenting an overview of the included articles.
AU - Brase, Alexa Kristin
AU - Jenert, Tobias
ID - 52702
IS - 1
JF - EDeR. Educational Design Research
SN - 2511-0667
TI - Knowledge by Design in Education
VL - 8
ER -
TY - JOUR
AU - Buyken, Anette
AU - Libuda, Lars
ID - 52712
JF - DGEwissen
TI - Ernährung und Alltagsbewältigung - Ein Spannungsfeld für Individuum, Haushalt und Gesellschaft
ER -
TY - JOUR
AB - Miller's rule is an empirical relation between the nonlinear and linear optical coefficients that applies to a large class of materials but has only been rigorously derived for the classical Lorentz model with a weak anharmonic perturbation. In this work, we extend the proof and present a detailed derivation of Miller's rule for an equivalent quantum-mechanical anharmonic oscillator. For this purpose, the classical concept of velocity-dependent damping inherent to the Lorentz model is replaced by an adiabatic switch-on of the external electric field, which allows a unified treatment of the classical and quantum-mechanical systems using identical potentials and fields. Although the dynamics of the resulting charge oscillations, and hence the induced polarizations, deviate due to the finite zero-point motion in the quantum-mechanical framework, we find that Miller's rule is nevertheless identical in both cases up to terms of first order in the anharmonicity. With a view to practical applications, especially in the context of ab initio calculations for the optical response where adiabatically switched-on fields are widely assumed, we demonstrate that a correct treatment of finite broadening parameters is essential to avoid spurious errors that may falsely suggest a violation of Miller's rule, and we illustrate this point by means of a numerical example.
AU - Meyer, Maximilian Tim
AU - Schindlmayr, Arno
ID - 52723
JF - Journal of Physics B: Atomic, Molecular and Optical Physics
SN - 0953-4075
TI - Derivation of Miller's rule for the nonlinear optical susceptibility of a quantum anharmonic oscillator
ER -
TY - CONF
AU - Sparmann, Sören
AU - Hüsing, Sven
AU - Schulte, Carsten
ID - 52380
T2 - Proceedings of the 23rd Koli Calling International Conference on Computing Education Research
TI - JuGaze: A Cell-based Eye Tracking and Logging Tool for Jupyter Notebooks
ER -
TY - CONF
AU - Hüsing, Sven
AU - Schulte, Carsten
AU - Sparmann, Sören
AU - Bolte, Mario
ID - 52379
T2 - Proceedings of the 55th ACM Technical Symposium on Computer Science Education V. 1
TI - Using Worked Examples for Engaging in Epistemic Programming Projects
ER -
TY - JOUR
AB - Heteroclinic structures organize global features of dynamical systems. We analyse whether heteroclinic structures can arise in network dynamics with higher-order interactions which describe the nonlinear interactions between three or more units. We find that while commonly analysed model equations such as network dynamics on undirected hypergraphs may be useful to describe local dynamics such as cluster synchronization, they give rise to obstructions that allow to design of heteroclinic structures in phase space. By contrast, directed hypergraphs break the homogeneity and lead to vector fields that support heteroclinic structures.
AU - Bick, Christian
AU - von der Gracht, Sören
ID - 52726
IS - 2
JF - Journal of Complex Networks
KW - Applied Mathematics
KW - Computational Mathematics
KW - Control and Optimization
KW - Management Science and Operations Research
KW - Computer Networks and Communications
SN - 2051-1329
TI - Heteroclinic dynamics in network dynamical systems with higher-order interactions
VL - 12
ER -
TY - BOOK
ED - Becher, Andrea
ID - 52725
TI - Politische Bildung im Sachunterricht. Potenziale - Positionen - Perspektiven
ER -
TY - JOUR
AB - Through tailoring the geometry and design of biomaterials, additive manufacturing is revolutionizing the production of metallic patient-specific implants, e.g., the Ti-6Al-7Nb alloy. Unfortunately, studies investigating this alloy showed that additively produced samples exhibit anisotropic microstructures. This anisotropy compromises the mechanical properties and complicates the loading state in the implant. Moreover, the minimum requirements as specified per designated standards such as ISO 5832-11 are not met. The remedy to this problem is performing a conventional heat treatment. As this route requires energy, infrastructure, labor, and expertise, which in turn mean time and money, many of the additive manufacturing benefits are negated. Thus, the goal of this work was to achieve better isotropy by applying only adapted additive manufacturing process parameters, specifically focusing on the build orientations. In this work, samples orientated in 90°, 45°, and 0° directions relative to the building platform were manufactured and tested. These tests included mechanical (tensile and fatigue tests) as well as microstructural analyses (SEM and EBSD). Subsequently, the results of these tests such as fractography were correlated with the acquired mechanical properties. These showed that 90°-aligned samples performed best under fatigue load and that all requirements specified by the standard regarding monotonic load were met.
AU - Milaege, Dennis
AU - Eschemann, Niklas
AU - Hoyer, Kay-Peter
AU - Schaper, Mirko
ID - 52738
IS - 2
JF - Crystals
KW - Inorganic Chemistry
KW - Condensed Matter Physics
KW - General Materials Science
KW - General Chemical Engineering
SN - 2073-4352
TI - Anisotropic Mechanical and Microstructural Properties of a Ti-6Al-7Nb Alloy for Biomedical Applications Manufactured via Laser Powder Bed Fusion
VL - 14
ER -
TY - JOUR
AB - For 0 ≤ t ≤ r let m(t, r) be the maximum number s such that every t-edge-connected r-graph has s pairwise disjoint perfect matchings. There are only a few values of m(t, r) known, for instance m(3, 3) = m(4, r) = 1, and m(t, r) ≤ r − 2 for all t = 5,
and m(t, r) ≤ r − 3 if r is even. We prove that m(2l, r) ≤ 3l − 6 for every l ≥ 3 and r ≥ 2l.
AU - Ma, Yulai
AU - Mattiolo, Davide
AU - Steffen, Eckhard
AU - Wolf, Isaak Hieronymus
ID - 49905
JF - Combinatorica
KW - Computational Mathematics
KW - Discrete Mathematics and Combinatorics
SN - 0209-9683
TI - Edge-Connectivity and Pairwise Disjoint Perfect Matchings in Regular Graphs
VL - 44
ER -
TY - CHAP
AU - Bellinger, Franziska
AU - Dehmel, Lukas
ED - Bellinger, Franziska
ED - Thon, Christine
ED - Wischmann, Anke
ID - 52735
T2 - Bildung in Europa. Perspektiven außerschulischer Bildung in, aus und durch Europa
TI - (im Druck) Europäische Bildungsinitiativen als Rahmen medienpädagogischer Professionalisierung in der Erwachsenenbildung. Rekonstruktive Analysen zum Medien(bildungs)begriff
ER -
TY - CHAP
AU - Dehmel, Lukas
AU - Meister, Dorothee M.
ED - Oggolder, Christian
ED - Roth-Ebner, Caroline
ID - 52734
T2 - Medien, Biografien und Generationen
TI - (im Druck) Zur generationstheoretischen Analyse medienbiografischer Topoi. Eine medienpädagogische Perspektive
ER -
TY - JOUR
AU - Burgfeld-Meise, Bianca
AU - Dehmel, Lukas
ID - 52736
JF - Zeitschrift MedienPädagogik
TI - (im Druck) Verfügbarkeisfantasien des Lifelogging. Zur Positionierung des medialen Selbst unter den Bedingungen des Digitalen.
ER -
TY - CONF
AU - Jafarzadeh, Hanieh
AU - Klemme, Florian
AU - Amrouch, Hussam
AU - Hellebrand, Sybille
AU - Wunderlich, Hans-Joachim
ID - 52744
T2 - European Test Symposium, The Hague, Netherlands, May 20-24, 2024
TI - Time and Space Optimized Storage-based BIST under Multiple Voltages and Variations
ER -
TY - CONF
AU - Jafarzadeh, Hanieh
AU - Klemme, Florian
AU - Amrouch, Hussam
AU - Hellebrand, Sybille
AU - Wunderlich, Hans-Joachim
ID - 52742
T2 - IEEE Latin American Test Symposium (LATS), Maceió, Brazil, April 9-12, 2024
TI - Vmin Testing under Variations: Defect vs. Fault Coverage
ER -
TY - CONF
AU - Hellebrand, Sybille
AU - Sadeghi-Kohan, Somayeh
AU - Wunderlich, Hans-Joachim
ID - 52743
T2 - International Symposium of EDA (ISEDA), Xi'an, China, May 10-13, 2024
TI - Functional Safety and Reliability of Interconnects throughout the Silicon Life Cycle
ER -
TY - CONF
AU - Lebedeva, Anastasia
AU - Protte, Marius
AU - van Straaten, Dirk
AU - Fahr, René
ID - 48387
T2 - Advances in Information and Communication
TI - Involvement of domain experts in the AI training does not affect adherence – An AutoML study
VL - 919
ER -
TY - CONF
AU - Wunderlich, Hans-Joachim
AU - Jafarzadeh, Hanieh
AU - Hellebrand, Sybille
ID - 52745
T2 - International Symposium of EDA (ISEDA), Xi’an, China, May 10-13, 2024
TI - Robust Test of Small Delay Faults under PVT-Variations
ER -
TY - GEN
AU - Stiballe, Alisa
AU - Reimer, Jan Dennis
AU - Sadeghi-Kohan, Somayeh
AU - Hellebrand, Sybille
ID - 50284
TI - Modeling Crosstalk-induced Interconnect Delay with Polynomial Regression
ER -
TY - GEN
AU - Ustimova, Magdalina
AU - Sadeghi-Kohan, Somayeh
AU - Hellebrand, Sybille
ID - 51799
TI - Crosstalk-Aware Simulation of Interconnects Using Artificial Neural Networks
ER -
TY - JOUR
AU - Harder, Hans
AU - Peitz, Sebastian
ID - 52758
TI - On the continuity and smoothness of the value function in reinforcement learning and optimal control
ER -
TY - CONF
AU - Hu, Lijie
AU - Habernal, Ivan
AU - Shen, Lei
AU - Wang, Di
ED - Graham, Yvette
ED - Purver, Matthew
ID - 52827
T2 - Findings of the Association for Computational Linguistics: EACL 2024, St. Julian’s, Malta, March 17-22, 2024
TI - Differentially Private Natural Language Models: Recent Advances and Future Directions
ER -
TY - CONF
AB - Neural machine translation (NMT) is a widely popular text generation task, yet there is a considerable research gap in the development of privacy-preserving NMT models, despite significant data privacy concerns for NMT systems. Differentially private stochastic gradient descent (DP-SGD) is a popular method for training machine learning models with concrete privacy guarantees; however, the implementation specifics of training a model with DP-SGD are not always clarified in existing models, with differing software libraries used and code bases not always being public, leading to reproducibility issues. To tackle this, we introduce DP-NMT, an open-source framework for carrying out research on privacy-preserving NMT with DP-SGD, bringing together numerous models, datasets, and evaluation metrics in one systematic software package. Our goal is to provide a platform for researchers to advance the development of privacy-preserving NMT systems, keeping the specific details of the DP-SGD algorithm transparent and intuitive to implement. We run a set of experiments on datasets from both general and privacy-related domains to demonstrate our framework in use. We make our framework publicly available and welcome feedback from the community.
AU - Igamberdiev, Timour
AU - Vu, Doan Nam Long
AU - Kuennecke, Felix
AU - Yu, Zhuo
AU - Holmer, Jannik
AU - Habernal, Ivan
ED - Aletras, Nikolaos
ED - De Clercq, Orphee
ID - 52842
T2 - Proceedings of the 18th Conference of the European Chapter of the Association for Computational Linguistics: System Demonstrations
TI - DP-NMT: Scalable Differentially Private Machine Translation
ER -