cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Parsec-scale jet properties of the quasar PG 1302$-$102
Creators: name: Mohan, P.
name: An, T.
name: Frey, S.
name: Mangalam, A.
name: Gabanyi, K. E.
name: Kun, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The quasar PG 1302$-$102 is believed to harbour a supermassive binary black hole (SMBBH) system. Using the available 15 GHz and $2-8$ GHz, multi-epoch Very Long Baseline Array data, we constrain the pc-scale jet properties based on the inferred mean proper motion, including a bulk Lorentz factor $\geq 5.1 \pm 0.8$, jet inclination angle $\leq (11.4 \pm 1.7)$ degrees, projected position angle $= 31.8$ degrees, intrinsic half opening angle $\leq (0.9 \pm 0.1)$ degrees and a mean $2-8$ GHz spectral index of 0.31. A general relativistic helical jet model is presented and applied to predict quasi-periodic oscillations of $\sim$ 10 days, power law power spectrum shape and a contribution of up to $\sim$ 53 percent to the observed variable core flux density. The model is used to make a case for high resolution, moderately sampled, long duration radio interferometric observations to reveal signatures due to helical knots and distinguish them from those due to SMBBH orbital activity including a phase difference $\sim π$ and an amplitude ratio (helical light curve amplitude/SMBBH light curve amplitude) of $0.2-3.3$. The prescription can be used to identify helical kinematic signatures from quasars, providing possible candidates for further studies with polarization measurements. It can also be used to infer promising SMBBH candidates for the study of gravitational waves if there are systematic deviations from helical signatures.
description: 10 pages, 7 figures, 2 tables, accepted for publication in MNRAS
title: Potenziale für die Planung und Gestaltung von gesundheitsfördernden Freiräumen
Creators: name: Halblaub Miranda, Marianne
name: Vásquez Fauggier, Gladys
name: Knöll, Martin
Publisher: name: vhw - Bundesverband für Wohnen und Stadtentwicklung e. V.
Year: 2023

description: Immer mehr Forschungsergebnisse stützen die Annahme, dass städtische Struktur, Gestaltung und Mobilitätssysteme erhebliche Auswirkungen auf die Gesundheit und das Wohlbefinden der Bewohner haben können. Positive Effekte von Freiräumen gehen insbesondere von gesteigerter körperlicher Aktivität, sozialer Interaktion und Erholung aus. Anderseits bleiben trotz enormer Fortschritte wesentliche gesundheitsfördernde Aspekte und deren Wechselwirkung weitaus unerforscht und nur für wenige zugänglich. Im vorliegenden Beitrag werden einige gesundheitsbezogene Verhaltensweisen in Freiräumen vorgestellt. Als Ausblick werden Potenziale genannt und Handlungsempfehlungen formuliert, die dazu beitragen, die Wechselwirkungen zwischen gebauter Umwelt und der Gesundheit zu vertiefen.
Erforschung der Unterschiede zwischen erfolgreichen und weniger erfolgreichen Schüler/-innen beim Bearbeiten konstruktiver Probleme auf Basis der Analyse von Eye-Tracking Daten
Creators: name: Esau, Tatiana
name: Fletcher, Stefan
Publisher: name: Journal of Technical Education (JOTED)
Year: 2020

description: In diesem Beitrag wurden Unterschiede zwischen erfolgreichen und weniger erfolgreichen Schüler/-innen der Sekundarstufe I beim Bearbeiten konstruktiver Probleme auf Ba-sis der Analyse von Eye-Tracking Daten mit dem Ziel der Generierung von Hypothesen erforscht. Dafür wurde die gesamte Stichprobe mithilfe des modifizierten Mediansplits künstlich in erfolg-reiche und weniger erfolgreiche Schüler/-innen dichotomisiert und die abhängigen Variablen: Re-lative Fixationsdauer, relative Fixationshäufigkeit, Fixationshäufigkeit pro Zeit sowie relative Suchfixations- und Verarbeitungsfixationshäufigkeit für die beiden Gruppen analysiert. Die Er-gebnisse zeigen, dass die erfolgreichen Schüler/-innen sich in allen untersuchten abhängigen Va-riablen von den weniger erfolgreichen unterscheiden. Daraufhin konnten 16 prozessbezogene Hy-pothesen generiert werden.
description: Journal of Technical Education (JOTED), Bd. 8 Nr. 1 (2020): Journal of Technical Education (JOTED)
Towards extracting the timelike pion form factor on CLS 2-flavour ensembles
Creators: name: Erben, Felix
name: Green, Jeremy
name: Mohler, Daniel
name: Wittig, Hartmut
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Results are presented from an ongoing study of the $ρ$ resonance. We use the distillation approach in order to create correlator matrices involving $ρ$ and $ππ$ interpolators. The study is done in a centre-of-mass frame and several moving frames. We are able to extract energy levels by solving the GEVP of those correlator matrices. The initial exploratory study is being done on a CLS 2-flavour lattice with a pion mass of $451$ $\mathrm{MeV}$ using $\mathcal{O}(a)$ improved Wilson fermions. One aim of this work is to extract the timelike pion form factor after applying the Lüscher formalism. We also plan to integrate this study with the existing Mainz programme for the calculation of the hadronic vacuum polarization contribution to the muon $g-2$ and will extend our study to lower pion masses and larger lattices in the future, including ensembles with $2+1$ flavours.
description: 34th annual International Symposium on Lattice Field Theory Southampton, proceedings
The dynamics of viruslike capsid assembly and disassembly
Creators: name: Timmermans, Suzanne B. P. E.
name: Ramezani, Alireza
name: Montalvo, Toni
name: Nguyen, Mark
name: van der Schoot, Paul
name: van Hest, Jan C. M.
name: Zandi, Roya
Publisher: name: arXiv
Year: 2022
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Cowpea chlorotic mottle virus (CCMV) is a widely used model for virus replication studies. A major challenge lies in distinguishing between the roles of the interaction between coat proteins and that between the coat proteins and the viral RNA in assembly and disassembly processes. Here, we report on the spontaneous and reversible size conversion of the empty capsids of a CCMV capsid protein functionalized with a hydrophobic elastin-like polypeptide which occurs following a pH jump. We monitor the concentration of T = 3 and T = 1 capsids as a function of time and show that the time evolution of the conversion from one T number to another is not symmetric: the conversion from T = 1 to T = 3 is a factor of 10 slower than that of T = 3 to T = 1. We explain our experimental findings using a simple model based on classical nucleation theory applied to virus capsids, in which we account for the change in the free protein concentration, as the different types of shells assemble and disassemble by shedding or absorbing single protein subunits. As far as we are aware, this is the first study confirming that both the assembly and disassembly of viruslike shells can be explained through classical nucleation theory, reproducing quantitatively results from time-resolved experiments.
Security Data and Models related to ISO/SAE21434 Purposes and Challenges
Creators: name: Volkersdorfer, Tina
Publisher: name: Zenodo
Year: 2023

description: Poster presented by Tina Volkersdorfer, project partner from CARISSMA - Technische Hochschule Ingolstadt (THI), during the "Women in Security and Cryptography (WiSC)” workshop celebrated from 27th – 29th of June in Bochum, Germany.
description: This project has received funding from the Horizon Europe programme under grant agreement No. 101069748.
Praxisbeiträge
Creators: name: Sari, Duygu
Publisher: name: Journal of Technical Education (JOTED)
Year: 2019

description: Unsere neue Rubrik „Praxisberichte“ wird mit dieser Ausgabe eingeführt. Dieses Format wird speziell für jene PraktikerInnen eingerichtet, die ihre Bildungsprozesse entweder wissenschaftlich fundieren und vor einem wissenschaftlichen Hintergrund reflektieren. Damit öffnet die JOTED eine Türe zur technikdidaktischen Praxis, genau dort, wo sie anschlussfähig für die Forschung ist. Wir erwarten uns damit eine Ergänzung unseres wissenschaftlichen Bezugsraums, zum einen in inhaltlicher Hinsicht (Konkretisierung des Forschungsfeldes), zum anderen in persönlicher Hinsicht (PraktikerInnen in wissenschaftlicher Reflexion). Wichtig wäre hier noch zu erwähnen, dass das keine Plattform für Praxisbeispiele werden soll. Dazu gibt es viele andere Formate. Auch geht es hier nicht um „good" oder "best practice“, denn eine normative Bewertung ist in wissenschaftlicher Hinsicht kaum relevant. Im Zentrum sollte immer ein erkennbarer Theoriebezug stehen (was wird hier gemacht und warum genau so?), dessen praktische Transformation (didaktische und methodische Details) sowie eine anschließende gründliche Reflexion entweder mit oder auch ohne Evaluationsbefunde (was vom Intendierten wurde wie umgesetzt und wie stellte sich dies in der Praxis dar). Hier freuen wir uns also auf fundierte und reflektierte Praxisberichte diefolgende Kriterien beinhalten sollten: • Thematische Aktualität • Bezugsraum technischer Unterricht • Curriculare Einbettung • Didaktisch-methodische Fundierung (Theorie) • Zielsetzung des didaktisch-methodischen Settings • Genaue Beschreibung (Illustration) der Umsetzung/Durchführung (keine fiktiven Konzepte) und der dabei gemachten Erfahrungen • Reflexion der Erfahrungen (evtl. mit Evaluationsbefunden) mit Bezug zu Theorie und Intentionen
description: Journal of Technical Education (JOTED), Bd. 7 Nr. 1 (2019): Journal of Technical Education (JOTED)
Analysis of wire coating extrusion
Creators: name: Podolsak, Anthony Kresimir.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Editorial: Lehren und Lernen zwischen Virtualität und Realität
Creators: name: Zinn, Bernd
Publisher: name: Journal of Technical Education (JOTED)
Year: 2019

description: In der Diskussion zur Digitalisierung der Berufs- und Arbeitswelt wird davon ausgegangen, dass virtuelle Lehr- und Lernwelten zunehmend mit realen Lehr- und Lernwelten verschmelzen und neue innovative technologiebasierte Lehr- und Lernarrangements prägen. Im Kontext dessen, beschäftigt sich der vorliegende Beitrag mit technologiebasierten Erfahrungswelten und wirft dabei einen Blick auf die Herausforderungen, die mit der Nutzung von virtuellen Lehr- und Lernumgebungen in der beruflichen Bildung verbunden sind. Schlüsselwörter: Virtuelle Realität, Professionalisierung, Lehrerbildung Digitalisierung In der Diskussion zur Digitalisierung der Berufs- und Arbeitswelt wird davon ausgegangen, dass virtuelle Lehr- und Lernwelten zunehmend mit realen Lehr- und Lernwelten verschmelzen und neue innovative technologiebasierte Lehr- und Lernarrangements prägen. Im Kontext dessen, beschäftigt sich der vorliegende Beitrag mit technologiebasierten Erfahrungswelten und wirft dabei einen Blick auf die Herausforderungen, die mit der Nutzung von virtuellen Lehr- und Lernumgebungen in der beruflichen Bildung verbunden sind.
description: Journal of Technical Education (JOTED), Bd. 7 Nr. 1 (2019): Journal of Technical Education (JOTED)
GRB 110530A: Peculiar Broad Bump and Delayed Plateau in Early Optical Afterglows
Creators: name: Zhong, Shu-Qing
name: Xin, Li-Ping
name: Liang, En-Wei
name: Wei, Jian-Yan
name: Urata, Yuji
name: Huang, Kui-Yun
name: Qiu, Yu-Lei
name: Deng, Can-Min
name: Wang, Yuan-Zhu
name: Deng, Jin-Song
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report our very early optical observations of GRB 110530A and investigate its jet properties together with its X-ray afterglow data. A peculiar broad onset bump followed by a plateau is observed in its early R band afterglow lightcurve. The optical data in the other bands and the X-ray data are well consistent with the temporal feature of the R band lightcurve. Our joint spectral fits of the optical and X-ray data show that they are in the same regime, with a photon index of $\sim 1.70$. The optical and X-ray afterglow lightcurves are well fitted with the standard external shock model by considering a delayed energy injection component. Based on our modeling results, we find that the radiative efficiency of the GRB jet is $\sim 1\%$ and the magnetization parameter of the afterglow jet is $<0.04$ with the derived extremely low $ε_B$ (the fraction of shock energy to magnetic field) of $(1.64\pm 0.25)\times 10^{-6}$. These results indicate that the jet may be matter dominated. Discussion on delayed energy injection from accretion of late fall-back material of its pre-supernova star is also presented.
description: 24 pages, 5 figures, 3 tables, accpeted for publication in ApJ
Aging and communication in the twin paradox
Creators: name: de Wolf, David A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The twin paradox of the special theory of relativity has given rise to a large body of literature discussing its implications. In its standard form, the traveler changes velocity only at the destination of the trip, so that he appears to perceive an improbably instantaneous and non-continuous change in age of the stationary twin. In this work, a smooth velocity/acceleration profile is used that allows the abrupt velocity-change case as a limit. All gravitational effects are ignored in this treatment. Aside from mutual perception of simultaneous clock times in an accelerating frame, constant communication of clock times between the twins by means of (digital) light signals is shown to be possible, in principle if not in practice.
description: 10 published pages, 8 figures
Editorial: Teaching and learning between virtuality and reality
Creators: name: Zinn, Bernd
Publisher: name: Journal of Technical Education (JOTED)
Year: 2019

description: Discussions about the digitisation of the professional and working world assume that virtual teaching and learning will increasingly merge with real teaching and learning which will result in new, innovative technology-based teaching and learning approaches. Against this background, this article addresses technology-based realms of experience and considers the challenges associated with the use of virtual teaching and learning environments in vocational education and training. Keywords: Virtual reality, professionalisation, teacher training, digitalisation
description: Journal of Technical Education (JOTED), Bd. 7 Nr. 1 (2019): Journal of Technical Education (JOTED)
Probabilistic Linear Multistep Methods
Creators: name: Teymur, Onur
name: Zygalakis, Konstantinos
name: Calderhead, Ben
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: Computation (stat.CO)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We present a derivation and theoretical investigation of the Adams-Bashforth and Adams-Moulton family of linear multistep methods for solving ordinary differential equations, starting from a Gaussian process (GP) framework. In the limit, this formulation coincides with the classical deterministic methods, which have been used as higher-order initial value problem solvers for over a century. Furthermore, the natural probabilistic framework provided by the GP formulation allows us to derive probabilistic versions of these methods, in the spirit of a number of other probabilistic ODE solvers presented in the recent literature. In contrast to higher-order Runge-Kutta methods, which require multiple intermediate function evaluations per step, Adams family methods make use of previous function evaluations, so that increased accuracy arising from a higher-order multistep approach comes at very little additional computational cost. We show that through a careful choice of covariance function for the GP, the posterior mean and standard deviation over the numerical solution can be made to exactly coincide with the value given by the deterministic method and its local truncation error respectively. We provide a rigorous proof of the convergence of these new methods, as well as an empirical investigation (up to fifth order) demonstrating their convergence rates in practice.
description: 30th Conference on Neural Information Processing Systems (NIPS 2016), Barcelona, Spain
Time Evolution of Galaxy Scaling Relations in Cosmological Simulations
Creators: name: Taylor, Philip
name: Kobayashi, Chiaki
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We predict the evolution of galaxy scaling relationships from cosmological, hydrodynamical simulations, that reproduce the scaling relations of present-day galaxies. Although we do not assume co-evolution between galaxies and black holes a priori, we are able to reproduce the black hole mass--velocity dispersion relation. This relation does not evolve, and black holes actually grow along the relation from significantly less massive seeds than have previously been used. AGN feedback does not very much affect the chemical evolution of our galaxies. In our predictions, the stellar mass--metallicity relation does not change its shape, but the metallicity significantly increases from $z\sim2$ to $z\sim1$, while the gas-phase mass-metallicity relation does change shape, having a steeper slope at higher redshifts ($z\lesssim3$). Furthermore, AGN feedback is required to reproduce observations of the most massive galaxies at $z\lesssim1$, specifically their positions on the star formation main sequence and galaxy mass--size relation.
description: Accepted for publication in MNRAS. 16 pages, 17 figures
A study of icing in regenerators
Creators: name: Menegatti, Richard J.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Die Weltmeisterschaft der Berufe:. Analyse der „WorldSkills-Wettbewerbe“ aus einer technikdidaktischen
Creators: name: Tenberg, Ralf
name: Herrmann, Stefanie
name: Romer, Hubert
Publisher: name: Journal of Technical Education (JOTED)
Year: 2019

description: Alle 2 Jahre finden die WorldSkills in einem anderen Land, auf einem anderen Kontinent statt. Wenngleich diese „Weltmeisterschaft der Berufe“ in Deutschland wenig bekannt und eher eine Insider-Veranstaltung ist, hat sie im internationalen Berufsbildungsraum große Bedeutung. Im Folgenden wird zunächst erklärt, was die WorldSkills sind, was ihre Ideen und Ziele sind und woher sie kommen. Anschließend erfolgt eine skizzenartige Gegenüberstellung der weltweiten Berufsbildungsansätze jener Staaten, welche sich regelmäßig an den WorldÂ­Skills beteiligen. Auf Basis von Wettbewerbs-Ergebnissen wird ein Ländervergleich vorgestellt und differenziert erörtert, welche Staaten in welchentechnischen Berufssegmenten sich in den WorldSkills wie positionieren“. Dabei wird deutlich, dass die WorldSkills-Wettbewerbe wertvolle standardisierte Datenmaterialien liefern, die auf globaler Ebene erhoben werden und hierbei wertvolle Grundlagen liefern, die von der Forschung für vergleichende Studien genutzt werden können. Die WorldSkills erheben nicht den Anspruch einer „Berufsbildungs-Pisa“. Zu inkonsistent sind die Ausgangsbedingungen der Teilnehmenden und zu wenig kontrollierbar sind die hier entscheidenden Prädiktoren. Dies wird auch mit dem erklärten Ziel der WorldÂ­Â­Skills-Wettbewerbe untermauert, „to showcase excellence“, bezogen auf Individuen, nicht Bildungs-systeme. Deutlich wird aber aus den Befunden, dass technisch-berufliche Bildung im internationalen Raum einen hohen Stellenwert hat und, dass sich hierbei unsere Duale Ausbildung auf Augenhöhe mit tertiären Bildungsformaten behaupten kann. Dies zeigen auch die abgerufenen Leistungsniveaus in den Wettbewerben, die sich auf dem EQR-Level von 5-6 bewegen. Schlüsselwörter: WorldSkills, internationaler Vergleich, technische Berufe
description: Journal of Technical Education (JOTED), Bd. 7 Nr. 1 (2019): Journal of Technical Education (JOTED)
Cancellation of photothermally induced instability in an optical resonator
Creators: name: Qin, Jiayi
name: Guccione, Giovanni
name: Ma, Jinyong
name: Gu, Chenyue
name: Lecamwasam, Ruvi
name: Buchler, Ben C.
name: Lam, Ping Koy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Optical systems are often subject to parametric instability caused by the delayed response of the optical field to the system dynamics. In some cases, parasitic photothermal effects aggravate the instability by adding new interaction dynamics. This may lead to the possible insurgence or amplification of parametric gain that can further destabilize the system. In this paper, we show that the photothermal properties of an optomechanical cavity can be modified to mitigate or even completely cancel optomechanical instability. By inverting the sign of the photothermal interaction to let it cooperate with radiation pressure, we achieve control of the system dynamics to be fully balanced around a stable equilibrium point. Our study provides a feedback solution for optical control and precise metrological applications, specifically in high-sensitivity resonating systems that are particularly susceptible to parasitic photothermal effects, such as our test case of a macroscopic optical levitation setup. This passive stabilization technique is beneficial for improving system performance limited by photothermal dynamics in broad areas of optics, optomechanics, photonics, and laser technologies.
description: 15 pages, 5 figures
FeedLens: Polymorphic Lenses for Personalizing Exploratory Search over Knowledge Graphs
Creators: name: Kaur, Harmanpreet
name: Downey, Doug
name: Singh, Amanpreet
name: Cheng, Evie Yu-Yen
name: Weld, Daniel S.
name: Bragg, Jonathan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: The vast scale and open-ended nature of knowledge graphs (KGs) make exploratory search over them cognitively demanding for users. We introduce a new technique, polymorphic lenses, that improves exploratory search over a KG by obtaining new leverage from the existing preference models that KG-based systems maintain for recommending content. The approach is based on a simple but powerful observation: in a KG, preference models can be re-targeted to recommend not only entities of a single base entity type (e.g., papers in the scientific literature KG, products in an e-commerce KG), but also all other types (e.g., authors, conferences, institutions; sellers, buyers). We implement our technique in a novel system, FeedLens, which is built over Semantic Scholar, a production system for navigating the scientific literature KG. FeedLens reuses the existing preference models on Semantic Scholar -- people's curated research feeds -- as lenses for exploratory search. Semantic Scholar users can curate multiple feeds/lenses for different topics of interest, e.g., one for human-centered AI and another for document embeddings. Although these lenses are defined in terms of papers, FeedLens re-purposes them to also guide search over authors, institutions, venues, etc. Our system design is based on feedback from intended users via two pilot surveys (n=17 and n=13, respectively). We compare FeedLens and Semantic Scholar via a third (within-subjects) user study (n=15) and find that FeedLens increases user engagement while reducing the cognitive effort required to complete a short literature review task. Our qualitative results also highlight people's preference for this more effective exploratory search experience enabled by FeedLens.
description: To appear at UIST 2022
Einfluss eines elektrotechnischen Förder- und Interventionstrainings (Elektro-FIT) in Lernfeld 1 & 2 auf das Fachwissen von Elektronikern für Energie- und Gebäudetechnik
Creators: name: Hedrich, Matthias
name: Ariali, Sunita
Publisher: name: Journal of Technical Education (JOTED)
Year: 2019

description: Die als Quasi-Experiment angelegte Untersuchung ist eine längsschnittliche Interventionsstudie, welche die Wirkungseffekte eines sechsmonatigen Elektro-Förder- und Interventions-Trainings (Elektro-FIT) auf die Fachwissensentwicklung analysiert. Die Interâ€‘ ventionsmaßnahmen wurden speziell für die elektrotechnische Grundbildung in Lernfeld (LF) 1 und 2 entwickelt und vorliegend bei Elektronikern für Energie- und Gebäudetechnik eingesetzt (N=213). Die Befunde zeigen, dass die Experimentalgruppe durch das Elektro-FIT einen signifikant höheren Lernzuwachs aufweist als die Kontrollgruppe. Dabei profitieren kognitiv stärkere Schüler eher vom Fördertraining als kognitiv schwächere Schüler. Durch tiefergehende Analysen mittels gemischter linearer Modelle (LMMs) lässt sich nachweisen, dass kognitive Voraussetzungen und der Migrationshintergrund, der über die Muttersprache erfasst wird, Einfluss auf das Fachwissen nehmen. Geringe kognitive Voraussetzungen und/oder eine nicht deutsche Muttersprache wirken sich hierbei limitierend auf Fachwissen aus. Schlüsselwörter: (Fach-)Wissenserwerb, förderbedürftige Schüler, gemischte lineare Modelle, Elektro-Förder- und Interventions-Training (Elektro-FIT)
description: Journal of Technical Education (JOTED), Bd. 7 Nr. 1 (2019): Journal of Technical Education (JOTED)
Nigeria: Fifty Years After the Civil War
Creators: name: Tangban, Ojong Echum
name: Eugene, Eugene Obiora
Publisher: name: British Journal for Military History
Year: 2025

description: The thrust of this article is Nigeria: 50 years after the civil war. The end of the war in January 1970 heralded an era of measures by successive governments at re-integrating the Igbo and forging national unity. As laudable as the measures are, there exist gaps in many of them between intent and practice. Many people continue to raise concern as to when the Igbo will be truly integrated into Nigeria and the centrifugal forces of ethnic and religious chauvinism tamed within Nigerian society. Using primary and secondary sources, this article concludes that true re-integration of the Igbo remains a mirage and to avert another civil war, successive leaders need to demonstrate genuine commitment to patriotism and national unity.
description: British Journal for Military History, Vol. 11 No. 1 (2025): British Journal for Military History
Attenuation of TeV $γ$-rays by the starlight photon field of the host galaxy
Creators: name: Zacharias, Michael
name: Chen, Xuhui
name: Wagner, Stefan J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The absorption of TeV $γ$-ray photons produced in relativistic jets by surrounding soft photon fields is a long-standing problem of jet physics. In some cases the most likely emission site close to the central black hole is ruled out because of the high opacity caused by strong optical and infrared photon sources, such as the broad line region. Mostly neglected for jet modeling is the absorption of $γ$-rays in the starlight photon field of the host galaxy. Analyzing the absorption for arbitrary locations and observation angles of the $γ$-ray emission site within the host galaxy we find that the distance to the galaxy center, the observation angle, and the distribution of starlight in the galaxy are crucial for the amount of absorption. We derive the absorption value for a sample of $20$ TeV detected blazars with a redshift $z_r<0.2$. The absorption value of the $γ$-ray emission located in the galaxy center may be as high as $20\%$ with an average value of $6\%$. This is important in order to determine the intrinsic blazar parameters. We see no significant trends in our sample between the degree of absorption and host properties, such as starlight emissivity, galactic size, half-light radius, and redshift. While the uncertainty of the spectral properties of the extragalactic background light exceeds the effect of absorption by stellar light from the host galaxy in distant objects, the latter is a dominant effect in nearby sources. It may also be revealed in a differential comparison of sources with similar redshifts.
description: 9 pages, 4 figures; accepted for publication in MNRAS
The iterative reweighted Mixed-Norm Estimate for spatio-temporal MEG/EEG source reconstruction
Creators: name: Strohmeier, Daniel
name: Bekhti, Yousra
name: Haueisen, Jens
name: Gramfort, Alexandre
Publisher: name: arXiv
Year: 2016
Subjects: subject: Applications (stat.AP)
subject: Neurons and Cognition (q-bio.NC)
subject: Computation (stat.CO)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Source imaging based on magnetoencephalography (MEG) and electroencephalography (EEG) allows for the non-invasive analysis of brain activity with high temporal and good spatial resolution. As the bioelectromagnetic inverse problem is ill-posed, constraints are required. For the analysis of evoked brain activity, spatial sparsity of the neuronal activation is a common assumption. It is often taken into account using convex constraints based on the l1-norm. The resulting source estimates are however biased in amplitude and often suboptimal in terms of source selection due to high correlations in the forward model. In this work, we demonstrate that an inverse solver based on a block-separable penalty with a Frobenius norm per block and a l0.5-quasinorm over blocks addresses both of these issues. For solving the resulting non-convex optimization problem, we propose the iterative reweighted Mixed Norm Estimate (irMxNE), an optimization scheme based on iterative reweighted convex surrogate optimization problems, which are solved efficiently using a block coordinate descent scheme and an active set strategy. We compare the proposed sparse imaging method to the dSPM and the RAP-MUSIC approach based on two MEG data sets. We provide empirical evidence based on simulations and analysis of MEG data that the proposed method improves on the standard Mixed Norm Estimate (MxNE) in terms of amplitude bias, support recovery, and stability.
SELFY Project's presentation - CCAM Multi-cluster meeting
Creators: name: Eurecat Communication Department
name: Breuil, Fanny
Publisher: name: Zenodo
Year: 2023

description: SELFY project's presentation delivered by Eurecat during the multi-cluster meeting of the Connected, Cooperative and Automated Mobility Association (CCAM), which took place from 24th – 25th of October in Brussels (Belgium).
description: This project has received funding from the Horizon Europe programme under grant agreement No. 101069748.
The Social Life of an Artillery Battery: A Historical Anthropology of Malta’s Heavy Anti-Aircraft Defence
Creators: name: Debono, Nikolai
Publisher: name: British Journal for Military History
Year: 2025

description: Eighty years after the Second World War ‘Siege of Malta’ memories of air-raid shelters and wartime hunger live on. All of Malta’s war museums are related to authentic sites from the conflict, and commemorations often take place at specific monuments and historical locations. However, other sites linked to the war remain discarded in public memory. Anti-aircraft batteries are a case in point: a network of concrete structures and guns built to hit back at Malta’s aerial attackers. This article explores the origins of these sites and, much more importantly, the social life that blossomed within them as a unique way of being. It examines the close connections forged between gunners and their guns, and it explores how anti-aircraft sites have been both memorialised and forgotten. 
description: British Journal for Military History, Vol. 11 No. 1 (2025): British Journal for Military History
AlGaN Channel Field Effect Transistors with Graded Heterostructure Ohmic Contacts
Creators: name: Bajaj, Sanyam
name: Akyol, Fatih
name: Krishnamoorthy, Sriram
name: Zhang, Yuewei
name: Rajan, Siddharth
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on ultra-wide bandgap (UWBG) Al0.75Ga0.25N channel metal-insulator-semiconductor field-effect transistors (MISFET) with heterostructure engineered low-resistance ohmic contacts. The low intrinsic electron affinity of AlN (0.6 eV) leads to large Schottky barriers at metal-AlGaN interface, resulting in highly resistive ohmic contacts. In this work, we use reverse compositional graded n++ AlGaN contact layer to achieve upward electron affinity grading, leading to a low specific contact resistance of 1.9x10-6 ohm.cm2 to n-Al0.75Ga0.25N channels (bandgap ~ 5.3 eV) with non-alloyed contacts. We also demonstrate UWBG Al0.75Ga0.25N channel MISFET device operation employing compositional graded n++ ohmic contact layer and 20 nm atomic layer deposited Al2O3 as the gate-dielectric.
Gendergerechte Technik - eine Herausforderung für das Lernen in einer digitalen Welt?
Creators: name: Stemmann, Jennifer
Publisher: name: Journal of Technical Education (JOTED)
Year: 2019

description: Eine fortschreitende Digitalisierung führt dazu, dass Personen mit immer mehr Programmen und Bedienoberflächen interagieren müssen. Ob die Gestaltung dieser User-Interface-Schnittstellen Nutzerinnen benachteiligen ist Inhalt dieses Beitrages. Dabei wird gezeigt, dass es tatsächlich einen Gendereffekt in der Steuerung technischer Systeme gibt, dieser aber nur zu einem kleinen Teil durch Intelligenz und nicht durch Selbstwirksamkeitserwartungen erklärt werden kann. Die Wirkung von Systemmerkmalen auf die Schwierigkeit im Umgang mit technischen Systemen ist für beide Geschlechter dieselbe.
description: Journal of Technical Education (JOTED), Bd. 7 Nr. 1 (2019): Journal of Technical Education (JOTED)
On the categorical foundations of quantum information theory: Categories and the Cramer-Rao inequality
Creators: name: Ciaglia, Florio M.
name: Di Cosmo, Fabio
name: González-Bravo, Laura
name: Ibort, Alberto
name: Marmo, Giuseppe
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: An extension of Cencov's categorical description of classical inference theory to the domain of quantum systems is presented. It provides a novel categorical foundation to the theory of quantum information that embraces both classical and quantum information theory in a natural way, while also allowing to formalise the notion of quantum environment. A first application of these ideas is provided by extending the notion of statistical manifold to incorporate categories, and investigating a possible, uniparametric Cramer-Rao inequality in this setting.
description: 20 pages, comments are welcome!
Novel Arrangement: The Belgian National Branch of the Royal Navy 1940 – 1946
Creators: name: Jones, Mark C
Publisher: name: British Journal for Military History
Year: 2025

description: After Germany occupied Belgium in 1940, Belgian mariners interested in continuing the war at sea joined a specially formed Belgian national branch of the British navy, the Royal Navy (Section Belge) or RNSB. The article reviews Belgian naval forces before the Second World War, explains the reasons for the creation of this unusual force, details the ships and personnel involved, and argues that the British decision to incorporate Belgians into the Royal Navy benefitted both Britain and Belgium.
description: British Journal for Military History, Vol. 11 No. 1 (2025): British Journal for Military History
Column flexible baseplate connections : a review of theoretical structural performance and possible applications to structural design
Creators: name: Hill, Colin W.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Mass spectra and Regge trajectories of $Λ_{c}^{+}$, $Σ_{c}^{0}$, $Ξ_{c}^{0}$ and $Ω_{c}^{0}$ Baryons
Creators: name: Shah, Zalak
name: Thakkar, Kaushal
name: Rai, Ajay Kumar
name: Vinodkumar, P. C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the mass spectra of the singly charmed baryons ($Λ_{c}^{+}$, $Σ_{c}^{0}$, $Ξ_{c}^{0}$ and $Ω_{c}^{0}$) using Hypercentral constituent quark model(hCQM). The hyper color coloumb plus linear potential is used to calculate the masses of positive(upto $J^{p}=\frac{7}{2}^{+}$) and negative parity(upto $J^{p}=\frac{9}{2}^{-}$) excited states. The spin-spin, spin-orbital and tensor interaction terms are also incorporated for mass spectra. We have compared our results with other theoretical predictions and Lattice QCD for each baryons. Moreover, the known experimental results are also reasonably closed to our predicted masses. By using the radial and orbital excitation, we construct Regge trajectories for the baryons in (n,$M^{2}$) plane and find their slopes and intercepts. The other properties like, magnetic moments, radiative transitions and radiative decay widths of these baryons are also calculated successfully.
description: 12 pages, 2 figures, it is to be published in Chinese Physics C. arXiv admin note: text overlap with arXiv:1602.06384
Unterschiede des mathematischen Wissens bei Studierenden des Bauingenieurwesens zu Studienbeginn
Creators: name: Dammann, Elmar
name: Lang, Martin
Publisher: name: Journal of Technical Education (JOTED)
Year: 2019

description: Grundlegende mathematische Kenntnisse und Fähigkeiten sind Voraus-setzungen für ein erfolgreiches ingenieurwissenschaftliches Studium. Diese grundlegenden Kenntnisse und Fähigkeiten fehlen jedoch einer großen Zahl Studierender bei Studienbeginn. Diese Studierenden sind herausgefordert ihre fachlichen Defizite im ersten Semester aufzuarbeiten. Welche fachlichen Defizite dies sind, wird in dieser Untersuchung verdeutlicht. Studienbeginnenden des ersten Semesters im Bauingenieurwesen wurde zu Beginn und am Ende dieses Semesters ein Test zum mathematischen Wissen vorgelegt. Es zeigen sich zu Beginn des ersten Semesters deutliche Leistungsunterschiede innerhalb der Kohorte. Diese Unterschiede bleiben im Verlauf des ersten Semesters weitgehend bestehen. Damit gelingt es gerade leistungsschwächeren Studierenden kaum ihre fachlichen Defizite im Bereich des mathematischen Wissens innerhalb des ersten Semesters aufzuarbeiten. Schlüsselwörter: Studienerfolg, mathematisches Wissen, Prädiktoren, Mathematik, Ingenieurstudium
description: Journal of Technical Education (JOTED), Bd. 7 Nr. 1 (2019): Journal of Technical Education (JOTED)
Performance Assessment of Diffusive Load Balancing for Distributed Particle Advection
Creators: name: Demiralp, Ali Can
name: Helmrich, Dirk Norbert
name: Protze, Joachim
name: Kuhlen, Torsten Wolfgang
name: Gerrits, Tim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: Particle advection is the approach for extraction of integral curves from vector fields. Efficient parallelization of particle advection is a challenging task due to the problem of load imbalance, in which processes are assigned unequal workloads, causing some of them to idle as the others are performing compute. Various approaches to load balancing exist, yet they all involve trade-offs such as increased inter-process communication, or the need for central control structures. In this work, we present two local load balancing methods for particle advection based on the family of diffusive load balancing. Each process has access to the blocks of its neighboring processes, which enables dynamic sharing of the particles based on a metric defined by the workload of the neighborhood. The approaches are assessed in terms of strong and weak scaling as well as load imbalance. We show that the methods reduce the total run-time of advection and are promising with regard to scaling as they operate locally on isolated process neighborhoods.
Fusion-fission probabilities, cross sections and structure notes of super-heavy nuclei
Creators: name: Kowal, Michał
name: Cap, Tomasz
name: Jachimowicz, Piotr
name: Skalski, Janusz
name: Siwek-Wilczyńska, Krystyna
name: Wilczyński, Janusz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Fusion - fission probabilities in the synthesis of heaviest elements are discussed in the context of the latest experimental reports. Cross sections for superheavy nuclei are evaluated using "Fusion by Diffusion" (FBD) model. Predictive power of this approach is shown for experimentally known Lv, Og isotopes and predictions given for Z=119,120. Ground state and saddle point properties as: masses, shell corrections, pairing energies and deformations necessary for cross section estimations are calculated systematically within the multidimensional microscopic - macroscopic method based on the deformed Woods-Saxon single particle potential. In the frame of FBD approach predictions for production of elements heavier than Z = 118 are not too optimistic. For this reason, and because of high instability of superheavy nuclei, we comment on some structure effects, connected with the K-isomerism phenomenon which could lead to a significant increase in the stability of these systems.
description: Lecture given during Nobel symposium; "Chemistry and Physics of Heavy and Superheavy Elements" - May 29 - June 3, 2016, at B\"ackaskog Castle
Adaptive control using a sixteen bit microprocessor
Creators: name: Halpern, Mark.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
SELFY Project's presentation - EARPA's 20-Anniversary
Creators: name: Eurecat Communication Department
name: Breuil, Fanny
name: Jiménez, Víctor
Publisher: name: Zenodo
Year: 2023

description: SELFY project's presentation delivered during the EARPA’s anniversary event “Driving Innovation since 20 years!”, celebrated last Wednesday 19th of October in Brussels (Belgium). Víctor Jiménez, project’s technical coordinator and researcher at the IT&OT Security Unit of Eurecat, and Fanny Breuil, project's coordinator and R&I programme of Eurecat, participated in the event.
description: This project has received funding from the Horizon Europe programme under grant agreement No. 101069748.
Design Thinking für berufsbildende Schulen? Annährung an einen Innovationsansatz über dessen Erprobung in der Lehrerbildung
Creators: name: Krüger, Marc
Publisher: name: Journal of Technical Education (JOTED)
Year: 2019

description: Design Thinking ist ein Innovationsansatz, mit dem konkrete Probleme gelöst sowie neue Produkte entwickelt werden. Dessen stete Verbreitung in Organisationen wirft die Frage auf, inwieweit dieser Ansatz auch eine Bedeutung für berufsbildende Schulen hat. Es wird dargelegt, dass eine zunehmende Auseinandersetzung mit Design Thinking in Bildungskontexten festzustellen ist, wobei dieser z.B. als nützlich zur Curriculums- sowie zur Schulentwicklung erachtet wird. Um die Bedeutung von Design Thinking für berufsbildende Schulen zu bewerten, haben Lehramtsstudierende Aufgabenstellungen aus der beruflichen Bildung mit Design Thinking bearbeitet. Die Arbeit kommt zu dem Schluss, dass Design Thinking auch für die berufsbildenden Schulen von Interesse ist und weiterführende Arbeiten empfehlenswert sind.
description: Journal of Technical Education (JOTED), Bd. 7 Nr. 1 (2019): Journal of Technical Education (JOTED)
Why do drivers and automation disengage the automation? Results from a study among Tesla users
Creators: name: Nordhoff, Sina
name: De Winter, Joost
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: A better understanding of automation disengagements can impact the safety and efficiency of automated systems. This study investigates the factors contributing to driver- and system-initiated disengagements by analyzing semi-structured interviews with 103 users of Tesla's Autopilot and FSD Beta. Through an examination of the data, main categories and sub-categories of disengagements were identified, which led to the development of a triadic model of automation disengagements. The model treats automation and human operators as equivalent agents. It suggests that human operators disengage automation when they anticipate failure, observe unnatural or unwanted automation behavior (e.g., erratic steering, running red lights), or believe the automation is not suited for certain environments (e.g., inclement weather, non-standard roads). Human operators' negative experiences, such as frustration, feelings of unsafety, and distrust, are also incorporated into the model, as these emotions can be triggered by (anticipated) automation behaviors. The automation, in turn, monitors human operators and may disengage itself if it detects insufficient vigilance or traffic rule violations. Moreover, human operators can be influenced by the reactions of passengers and other road users, leading them to disengage automation if they sense discomfort, anger, or embarrassment due to the system's actions. This research offers insights into the factors contributing to automation disengagements, highlighting not only the concerns of human operators but also the social aspects of the phenomenon. Furthermore, the findings provide information on potential edge cases of automated vehicle technology, which may help to enhance the safety and efficiency of such systems.
description: 51 pages, 1 figure