cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
MAGIC-TBR: Multiview Attention Fusion for Transformer-based Bodily Behavior Recognition in Group Settings
Creators: name: Madan, Surbhi
name: Jain, Rishabh
name: Sharma, Gulshan
name: Subramanian, Ramanathan
name: Dhall, Abhinav
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Human-Computer Interaction (cs.HC)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Bodily behavioral language is an important social cue, and its automated analysis helps in enhancing the understanding of artificial intelligence systems. Furthermore, behavioral language cues are essential for active engagement in social agent-based user interactions. Despite the progress made in computer vision for tasks like head and body pose estimation, there is still a need to explore the detection of finer behaviors such as gesturing, grooming, or fumbling. This paper proposes a multiview attention fusion method named MAGIC-TBR that combines features extracted from videos and their corresponding Discrete Cosine Transform coefficients via a transformer-based approach. The experiments are conducted on the BBSI dataset and the results demonstrate the effectiveness of the proposed feature fusion with multiview attention. The code is available at: https://github.com/surbhimadan92/MAGIC-TBR
description: 4 pages, 2 Tables and 3 Figures
SELFY Presentation - CyberMatch Conference
Creators: name: Hans-Joachim Hof
Publisher: name: Zenodo
Year: 2023

description: SELFY project's presentation delivered by Technische Hochschule Ingolstadt (THI) during the CyberMatch Conference organised by Bayern Innovativ and celebrated from 24th of April – 5th of May 2023 in a hybrid format.
description: This project has received funding from the Horizon Europe programme under grant agreement No. 101069748.
Erschließung des didaktisch-methodischen Potenzials eines digitalen multifunktionalen Lernmediums
Creators: name: Lach, Franziska
Publisher: name: Journal of Technical Education (JOTED)
Year: 2016

description: Multifunktionale digitale Lernmedien bieten in der dualen Ausbildung eine Chance Lehren und Lernen zu gestalten. Um diese jedoch entsprechend in den Lernprozess einzubinden und ihr volles Potenzial zu nutzen, müssen diese näher betrachtet werden. Deshalb befasst sich diese Arbeit mit der Forschungsfrage, welche didaktisch-methodischen Potenziale ein bestimmtes multifunktionales, digitales Lernmedium hat. Die in der Theorie aufgeführten Potenziale werden anhand des Beispiels Tec2ScreenÂ® von Festo Didactic analysiert. Dies geschieht in Form von Interviews mit den Pilotkunden. Endergebnis ist, dass Tec2ScreenÂ® durch dessen Potenziale neuen Wind in die duale Ausbildung bringt. Jedoch setzt dies auch voraus, dass sich die Anwender mit diesem neuartigen System beschäftigen müssen, damit das gesamte Potenzial ausschöpft wird. Schlüsselwörter: didaktisch-methodisches Potenzial, digitale multifunktionale Lernmedien, Potenzial von Lernmedien, Tec2ScreenÂ®
description: Journal of Technical Education (JOTED), Bd. 4 Nr. 2 (2016): Journal of Technical Education (JOTED)
Kinetics of the reduction of arsenic (v) to arsenic (iii)
Creators: name: Loo, Ai Choo.
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.
Entwicklung und formative Evaluation eines Konzepts zum Transfer von Erfahrungswissen bei Servicetechnikern mittels videofallbasiertem Lernen
Creators: name: Hedrich, Matthias
name: Zinn, Bernd
Publisher: name: Journal of Technical Education (JOTED)
Year: 2016

description: Zum Erwerb von Erfahrungswissen im servicetechnischen Bereich gibt es wenige theoriegeleitet entwickelte und evaluierte Konzepte. Das im Beitrag vorgestellte Modul „Learn with an Expert“ (LEX) aus dem Lern- und Transferkonzept „ServiceLernLab“ soll den Erwerb von Erfahrungswissen und die Entwicklung von Störungsdiagnosekompetenz bei jungen Servicetechnikern fördern. Der Kern des Moduls LEX besteht in einem videofallbasierten Lernen mit einem Serviceexperten an einer komplexen Laserschneidanlage, in die technische Störungen (Fehlerfälle) implementiert wurden. Im Beitrag wird zunächst über die theoriegeleitete Entwicklung und Gestaltung der Lernumgebung auf der Grundlage situierter und problembasierter Instruktionsprinzipien berichtet. Weiterhin werden (formativen) Evaluationsergebnisse zur Überprüfung der Fehlerfallschwierigkeiten durch Servicetechniker (n=3) und der Bewertung der Gebrauchstauglichkeit (Usability) von Modul LEX durch Servicetechniker (n=44) dargestellt. Schlüsselwörter: Videofallbasiertes Lernen, situiertes Lernen, Erfahrungswissen, technische Störungsdiagnose, Servicetechniker
description: Journal of Technical Education (JOTED), Bd. 4 Nr. 2 (2016): Journal of Technical Education (JOTED)
Valid and Approximately Valid Confidence Intervals for Current Status Data
Creators: name: Kim, Sungwook
name: Fay, Michael P.
name: Proschan, Michael A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: 62G20

description: We introduce a new framework for creating point-wise confidence intervals for the distribution of event times for current status data. Existing methods are based on asymptotics. Our framework is based on binomial properties and motivates confidence intervals that are very simple to apply and are valid, i.e., guarantee nominal coverage. Although these confidence intervals are necessarily conservative for small sample sizes, asymptotically their coverage rate approaches the nominal one. This binomial framework also motivates approximately valid confidence intervals, and simulations show that these approximate intervals generally have coverage rates closer to the nominal level with shorter length than existing intervals, including the likelihood ratio-based confidence interval. Unlike previous asymptotic methods that require different asymptotic distributions for continuous or grid-based assessment, the binomial framework can be applied to either type of assessment distribution.
description: 42 pages, and 13 figures
title: Речь Посполитая в контексте междуцарствия
Creators: name: Сафонов, Михаил
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: Междуцарствие вызывало интерес исследователей главным образом потому, что оно явилось прелюдией к открытому выступлению декабристкой конспирации. Причины, благодаря которым вопрос о престолонаследии вызвал династический кризис, чуть было не приведший к падению самодержавия в России, интересовали историков в гораздо меньшей степени, нежели события на Сенатской площади 14 декабря 1825 г. Между тем так называемое восстание декабристов в значительной степени явилось следствием тех же причин, вызвавших династический кризис, истоки которого следует искать в польской политике Александра I. Стремление российского императора, ставшего после Венского конгресса польским королем, восстановить Речь Посполитую в ее средневековых пределах во главе с цесаревичем Константином вызвало сопротивление различных слоев русского общества. Оно явилось одной из причин возникновения декабристкой конспирации и, не будучи реализовано вследствие преждевременной кончины царя, запутало династическую ситуацию и спровоцировало выступление тайного общества.
The growth of dimension of cohomology of semipositive line bundles on Hermitian manifolds
Creators: name: Wang, Huan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 32A25, 53C55, 32W05, 32L10

description: In this paper, we study the dimension of cohomology of semipositive line bundles over Hermitian manifolds, and obtain an asymptotic estimate for the dimension of the space of harmonic $(0,q)$-forms with values in high tensor powers of a semipositive line bundle when the fundamental estimate holds. As applications, we estimate the dimension of cohomology of semipositive line bundles on $q$-convex manifolds, pseudo-convex domains, weakly $1$-complete manifolds and complete manifolds. We also obtain the estimate of cohomology on compact manifolds with semipositive line bundles endowed with a Hermitian metric with analytic singularities and the related vanishing theorems.
The Kinematic Structure of Magnetically Aligned HI Filaments
Creators: name: Kim, Doyeon Avery
name: Clark, Susan E
name: Putman, Mary E
name: Li, Larry
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We characterize the kinematic and magnetic properties of HI filaments located in a high Galactic latitude region ($165^\circ < α< 195^\circ$ and $12^\circ < δ< 24^\circ$). We extract three-dimensional filamentary structures using \texttt{fil3d} from the Galactic Arecibo L-Band Feed Array HI (GALFA-HI) survey 21-cm emission data. Our algorithm identifies coherent emission structures in neighboring velocity channels. Based on the mean velocity, we identify a population of local and intermediate velocity cloud (IVC) filaments. We find the orientations of the local (but not the IVC) HI filaments are aligned with the magnetic field orientations inferred from Planck 353 GHz polarized dust emission. We analyze position-velocity diagrams of the velocity-coherent filaments, and find that only 15 percent of filaments demonstrate significant major-axis velocity gradients with a median magnitude of 0.5 km s$^{-1}$ pc$^{-1}$, assuming a fiducial filament distance of 100 pc. We conclude that the typical diffuse HI filament does not exhibit a simple velocity gradient. The reported filament properties constrain future theoretical models of filament formation.
description: 15 pages, 16 figures
Didaktisch-methodische Rekonstruktion und Bewertung metalltechnischen Unterrichts mittels qualitativer Materialanalyse
Creators: name: Dengler, Marcus
Publisher: name: Journal of Technical Education (JOTED)
Year: 2016

description: Mittels einer formalen und inhaltlich-didaktischen Analyse von 26 Planungssätzen von lernfeldbasierten Unterrichtsmaterialien wurde in einem Ausschnitt (Metalltechnik) die Umsetzungspraxis des KMK-Lernfeldansatzes untersucht. Dabei wurde eine Klassifizierung der Unterlagen in vier Dimensionen (Vermittlungssystematik, Zielorientierung, Konstruktivistischer bzw. Objektivistischer Bereich) in drei Niveaustufen vorgenommen, wodurch drei Qualitätsstufen trennscharf unterscheidbar wurden. In der „Vermittlungs-systematik“ sind die größten Defizite zu sehen, während die „Zielorientierung“ die wenigsten Probleme bereitet. Im „Konstruktivistischen Bereich“ liegen selten eine weitreichende Kontextualisierung und hochwertige Problemstellungen vor. Im „Objektivistischer Bereich“ treten Mängel in der Wissensexplikation und der fachlichen Systematisierung auf. Schlüsselwörter: Qualitative Untersuchung, Unterrichtskonzeption, inhaltlich-didaktische Analyse, Lernfeldansatz, Metalltechnik
description: Journal of Technical Education (JOTED), Bd. 4 Nr. 2 (2016): Journal of Technical Education (JOTED)
title: Интеграция третьей звезды. Францис Кемпс и судьба Латгалии 1917–1920 годов
Creators: name: Плат, Тильман
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: В статье рассматривается процесс вхождения области Латгалия в состав Латвийского национального государства. Основное внимание уделяется кульминационному этапу этого процесса, который имел место с апреля по декабрь 1917 года в период между первым и вторым Латгальскими конгрессами. Среди выводов особо значимо утверждение, что административное включение Латгалии в состав государственной территории Латвии во многом предопределялось внешнеполитическими последствиями русской революции 1917 года, а также внутренними обстоятельствами, связанными с отсутствием у политического руководства Латгалии единства в решении связанного с этой областью «национального вопроса». При рассмотрении этой проблемы особо подчеркивается амбивалентная роль латгальского политика Франсиса Кемпса, который играл ключевую роль в развитии латгальской политической культуры и своими социополитическими взглядами соответствовал духу времени, но в решающую фазу политической борьбы 1917 года потерпел поражение от противников автономизации Латгалии, был незаслуженно забыт и только в настоящее время вновь обретает известность выдающегося политического деятеля постреволюционной эпохи.
title: У истоков польского протекторства: передача императорской «консерватуры» в отношении Рижского архиепископства в 1366 году
Creators: name: Бессуднов, Даниил
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: Статья содержит полный текст рескрипта императора Карла IV Люксембургского от 1366 года, в котором говорится о передаче ряду европейских государей ответственности за сохранение («консерватуру») привилегий Рижских архиепископов как князей империи и Рижской епархии как имперского лена. На привилегии Рижской церкви покушался Тевтонский орден в Ливонии, хотя они были пожалованы ей императорами, начиная с «контримператора» Генриха Распе, и неоднократно подтверждались самим Карлом IV. Их защита считалась императорской прерогативой, и ее делегирование ряду европейских государей дало им основание в XVI веке активно вмешиваться в дела Ливонии. Особенно заметно это проявилось во внешней политике польско-литовских Ягеллонов.
Fachliches Problemlösen in der Maschinenkonstruktion - Untersuchung von Struktur und Erlernbarkeit mittels multimodaler Technikmodelle
Creators: name: Breitschuh, Jan
name: Sonnenschein, Eva
name: Fuchs, Jonas
name: Albers, Albert
Publisher: name: Journal of Technical Education (JOTED)
Year: 2016

description: Technische Herausforderungen des Maschinenbauingenieurwesens erfordern umfangreiche Kompetenzen des fachspezifischen, problemlösenden Denkens und Handelns. Im Beitrag wird ein entsprechendes Kompetenzmodell hergeleitet, welches ein strukturiertes Erlernen dieser Kompetenzen ermöglicht und technische Problemlösekompetenz (tPLK) in einem Konstrukt beschreiben, das durch Formulierungshilfen für Aufgabenstellungen einerseits eine Messung ermöglicht und andererseits Lernschritte modularisiert. In einer empirischen Studie wurde die Erlernbarkeit technischer Problemlösekompetenz anhand multimodaler Modelle von typischen Mechanik-Bauteilen ermittelt. In der Auswertung konnte neben einem positiven Effekt bei Motivation, ein mittlerer positiver Effekt bezüglich Systemverständnis festgestellt werden. Schlüsselwörter: Maschinenkonstruktionslehre, Produktentwicklung, technische Problemlöse-kompetenz, multimodale Technikmodelle
description: Journal of Technical Education (JOTED), Bd. 4 Nr. 2 (2016): Journal of Technical Education (JOTED)
Pulse-shape discrimination and energy quenching of alpha particles in Cs$_2$LiLaBr$_6$:Ce$^{3+}$
Creators: name: Mesick, Katherine E.
name: Coupland, Daniel D. S.
name: Stonehill, Laura C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Cs$_2$LiLaBr$_6$:Ce$^{3+}$ (CLLB) is an elpasolite scintillator that offers excellent linearity and gamma-ray energy resolution and sensitivity to thermal neutrons with the ability to perform pulse-shape discrimination (PSD) to distinguish gammas and neutrons. Our investigation of CLLB has indicated the presence of intrinsic radioactive alpha background that we have determined to be from actinium contamination of the lanthanum component. We measured the pulse shapes for gamma, thermal neutron, and alpha events and determined that PSD can be performed to separate the alpha background with a moderate figure of merit of 0.98. We also measured the electron-equivalent-energy of the alpha particles in CLLB and simulated the intrinsic alpha background from $^{227}$Ac to determine the quenching factor of the alphas. A linear quenching relationship $L_α = E_α \times q + L_0$ was found at alpha particle energies above 5 MeV, with a quenching factor $q = 0.71$ MeVee/MeV and an offset $L_0 = - 1.19$ MeVee.
description: Preprint submitted to NIMA
Cutoff on Ramanujan complexes and classical groups
Creators: name: Chapman, Michael
name: Parzanchevski, Ori
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 05C81, 60B10, 60J10, 20E42

description: The total-variation cutoff phenomenon has been conjectured to hold for simple random walk on all transitive expanders. However, very little is actually known regarding this conjecture, and cutoff on sparse graphs in general. In this paper we establish total-variation cutoff for simple random walk on Ramanujan complexes of type $\widetilde{A}_{d}$ $(d\geq1)$. As a result, we obtain explicit generators for the finite classical groups $\mathrm{PGL}_{n}(\mathbb{F}_{q})$ for which the associated Cayley graphs exhibit total-variation cutoff.
title: Пятые Лихудовские чтения в Великом Новгороде
Creators: name: Салоников, Николай
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: В обзоре представлена тематика докладов, прозвучавших 14–15 апреля 2022 г. на научной конференции Пятые Лихудовские чтения в Новгородском государственном университете им. Ярослава Мудрого.
The fugro piezo-cone penetrometer : review and evaluation
Creators: name: Brown, Russell George.
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.
The Star Formation Histories of Disk Galaxies: the Live, the Dead, and the Undead
Creators: name: Oemler, Augustus
name: Abramson, Louis E.
name: Gladders, Michael D.
name: Dressler, Alan
name: Poggianti, Bianca M.
name: Vulcani, Benedetta
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We reexamine the systematic properties of local galaxy populations, using published surveys of star formation, structure, and gas content. After recalibrating star formation measures, we are able to reliably measure specific star formation rates well below the "main sequence" of star formation vs mass. We find an unexpectedly large population of galaxies with star formation rates intermediate between vigorously star-forming main sequence galaxies and passive galaxies, and with gas content disproportionately high for their star formation rates. Several lines of evidence suggest that these quiescent galaxies form a distinct population rather than a low star formation tail of the main sequence. We demonstrate that a tight main sequence, evolving with epoch, is a natural outcome of most histories of star formation and has little astrophysical significance, but that the quiescent population requires additional astrophysics to explain its properties. Using a simple model for disk evolution based on the observed dependence of star formation on gas content in local galaxies, and assuming simple histories of cold gas inflow, we show that the evolution of galaxies away from the main sequence can be attributed to the depletion of gas due to star formation after a cutoff in gas inflow. The quiescent population is composed of galaxies in which the density of disk gas has fallen below a threshold for disk stability. The evolution of galaxies beyond the quiescent state to gas exhaustion requires another process, probably wind-driven mass loss. The SSFR distribution of the quiescent and passive implies that the timescale of this process must be greater than a few Gyrs but less than a few tens of Gyrs. The environmental dependence of the galaxy populations is consistent with recent theory suggesting that cold gas inflows into galaxies are truncated at earlier times in denser environments.
description: 18 pages, 21 figures, submitted to ApJ Figure 3 replaced with correct file
Can diagnostic problem-solving competences of car mechatronics be validly assessed using a paper-pencil test?
Creators: name: Abele, Stephan
Publisher: name: Journal of Technical Education (JOTED)
Year: 2016

description: In this study, an authentic paper-based key-feature test for electrotechnical diagnostic problem-solving competence was developed, administered to car mechatronic apprentices (N = 206) and validated using diagnostic problem-solving scores. It was hypothesized that the paper-based test scores represent the same construct as the problem-solving scores. The written test turned out to have a relatively high reliability (EAP/PV = .75). Additionally, it was found that the paper-based scores and problem-solving scores were highly correlated (r = .76) but represented empirically distinct dimensions. Presumably, the written test especially covered diagnostic knowledge and failed to cover other relevant subcomponents of diagnostic problem-solving competence. It is argued that this unexpected finding might be caused by construct underrepresentation and construct-irrelevant variance of the paper-based key-feature test. Keywords: Professional competence, domain-specific problem-solving, key-feature items, construct representation, construct-irrelevant variance
description: Journal of Technical Education (JOTED), Bd. 4 Nr. 2 (2016): Journal of Technical Education (JOTED)
title: Международная научно-практическая летняя школа «Новгород в системе ганзейских отношений в Средние века»
Creators: name: Грохотова, Валентина
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: Обзор посвящен описанию Международной научно-практической летней школы «Новгород в системе ганзейских отношений в Средние века», прошедшей с 26 июня по 3 июля 2022 года в Гуманитарном институте Новгородского государственного университета им. Ярослава Мудрого в рамках стратегического проекта «Университет как генератор культурной идентичности» (Приоритет 2030).
Steepest Entropy Ascent Solution for a Continuous-Time Quantum Walker
Creators: name: Ray, Rohit Kishan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the steepest entropy ascent (SEA) ansatz to describe the non-linear thermodynamic evolution of a quantum system. Recently this principle has been dubbed the fourth law of thermodynamics (Beretta Gian Paolo. 2020 The fourth law of thermodynamics: steepest entropy ascent). A unique global equilibrium state exists in this context, and any other state is driven by the maximum entropy generation principle towards this equilibrium. We study the SEA evolution of a continuous-time quantum walker (CTQW) on a cycle graph with N nodes. SEA solutions are difficult to find analytically. We provide an approximate scheme to find a general single-particle evolution equation governed by the SEA principle, whose solution produces dissipation dynamics. We call this scheme fixed Lagrange's multiplier (FLM) method. In the Bloch sphere representation, we find trajectories traced out by the Bloch vector within the sphere itself. We have discussed these trajectories under various initial conditions for the case of a qubit. A similar dissipative motion is also observed in the case of CTQW, where probability amplitudes have been used to characterize decoherence. Our FLM scheme shows good agreement with numerical results. As reported in the text, in CTQW, a strong delocalization exists for low system relaxation time.
description: 18 pages,11 figures
Einfluss einer natürlichen Benutzerschnittstelle auf die Kollaboration in virtuellen Lernumgebungen
Creators: name: Groß, Kerstin
name: Stehling, Valerie
name: Richert, Anja
name: Jeschke, Sabina
name: Isenhardt, Ingrid
Publisher: name: Journal of Technical Education (JOTED)
Year: 2016

description: Virtuelle kollaborative Lernumgebungen vereinigen die Vorteile des kollaborativen Lernens mit räumlicher Unabhängigkeit sowie dem direkten Lernen am Modell. Eine aktuelle Studie aus dem Verbundprojekt „Exzellentes Lehren und Lernen in den Ingenieurwissenschaften (ELLI)“ untersucht Möglichkeiten zur Intensivierung der Kollaboration. Dabei wird eine natürliche Benutzerschnittstelle zur Steuerung des Sichtfeldes eingesetzt, die das Präsenzerleben in virtuellen Umgebungen steigert. Vermutet wird, dass dies ebenfalls für das soziale Präsenzerleben gilt. Die statistische Analyse ergibt einen signifikanten Unterschied zwischen Experimental- und Kontrollgruppe und unerwartete Ergebnisse für das soziale Präsenzerleben, wobei Selbst- und Fremdwahrnehmung der Studienteilnehmenden In-konsistenz aufweisen. Schlüsselwörter: virtuelle Lernumgebungen, kollaboratives Lernen, soziales Präsenzerleben, natürliche Benutzerschnittstelle, Oculus Rift
description: Journal of Technical Education (JOTED), Bd. 4 Nr. 2 (2016): Journal of Technical Education (JOTED)
The twist for positroid varieties
Creators: name: Muller, Greg
name: Speyer, David E
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: The purpose of this note is to connect two maps related to certain graphs embedded in the disc. The first is Postnikov's boundary measurement map, which combines partition functions of matchings in the graph into a map from an algebraic torus to an open positroid variety in a Grassmannian. The second is a rational map from the open positroid variety to an algebraic torus, given by certain Plücker coordinates which are expected to be a cluster in a cluster structure. This paper clarifies the relationship between these two maps, which has been ambiguous since they were introduced by Postnikov in 2001. The missing ingredient supplied by this paper is a twist automorphism of the open positroid variety, which takes the target of the boundary measurement map to the domain of the (conjectural) cluster. Among other applications, this provides an inverse to the boundary measurement map, as well as Laurent formulas for twists of Plücker coordinates.
description: 51 pages, 19 figures. Comments of all forms encouraged
Cohomology dimension growth for Nakano $q$-semipositive line bundles
Creators: name: Wang, Huan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 32A25, 53C55, 32W05, 32L10

description: We study the cohomology with high tensor powers of Nakano $q$-semipositive line bundles on complex manifolds. We obtain the asymptotic estimates for the dimension of cohomology with high tensor powers of semipositive line bundles over q-convex manifolds and various possibly non-compact complex manifolds, in which the order of estimates are optimal. Besides, estimates for the modified Dirac operator on Nakano $q$-positive line bundle on almost complex manifolds are given.
description: arXiv admin note: text overlap with arXiv:1810.09881
Cognitive Apprenticeship als Gestaltungsansatz für die Fehlersuche im allgemein bildenden Elektrotechnikunterricht
Creators: name: Schray, Hannes
name: Geißel, Bernd
Publisher: name: Journal of Technical Education (JOTED)
Year: 2016

description: Techniklehrer/innen der Sekundarstufe 1 präferieren in ihrer Methodenwahl inhaltsun-spezifisch die Fertigungsaufgabe. Im Themenbereich der Elektrotechnik bedeutet dies meist, dass Lernenden im technikbezogenen Unterricht vor die Aufgabe gestellt werden, anhand eines Schaltplans die jeweiligen Bauteile auf eine entsprechende Platine zu löten. Hierbei bleibt den Schüler/innen jedoch bei auftretenden Funktionsstörrungen aufgrund von Zeitmangel bzw. messtechnischen Barrieren kaum die Möglichkeit einer adäquaten Fehlerbehebung. Der vorliegende Beitrag beschäftigt sich daher mit der Frage, ob und wenn ja, inwieweit der aus dem Diskurs zum situierten Lernen entstandene Cognitive ApprenticeÂ­ship Ansatz einen Effekt auf die Kompetenz- und Motivationsentwicklung von Schüler/innen im allgemeinbildenden Elektrotechnikunterricht hat. Schlüsselwörter: Situiertes Lernen, Kognitive Meisterlehre, Technikunterricht, Fehlersuche
description: Journal of Technical Education (JOTED), Bd. 4 Nr. 2 (2016): Journal of Technical Education (JOTED)
title: «Где тиун, там и князь…»: власть и общество в раннемодерной России (казус князя И. В. Лыко Оболенского)
Creators: name: Пенской, Виталий
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: 2-я половина XV в. – время, когда был запущен процесс формирования основ т.н. «централизованного» Русского государства. Этот сложный и неоднозначный, противоречивый процесс был связан с наращиванием верховной властью своей инфраструктуры, которая, по мере ее развития, позволяла московским государя чувствовать себя более уверенно и более успешно, чем прежде, диктовать свою волю обществу. Однако до тех пор, пока эта инфраструктура находилась в зачаточном состоянии, возможности власти в этой сфере были ограничены. Эта ограниченность средств и возможностей по проведению независимой политики вынуждала государство, верховную власть, прислушиваться к мнению общества и искать у него поддержки. В свою очередь, общество было готово предоставить эту поддержку, но при условии, что власть будет соответствовать определенным требованиям, которые давно сложились и были освящены традицией. Следование этой традиции гарантировала власти лояльность подданных и, как результат, успех ее начинаний. Желая сохранить эту лояльность и послушание, верховная власть жестко реагировала на злоупотребления своих представителей на местах в тех случаях, когда их действия выходили далеко за рамки традиции. Казус с великолуцким наместником князем И.В. Лыко Оболенским, злоупотребления которого вызвали в 1479 г. конфликт с жителями Великих Лук и стали предметом разбирательства со стороны великого князя, является ярким тому примером.
What is the gradient of a scalar function of a symmetric matrix ?
Creators: name: Srinivasan, Shriram
name: Panda, Nishant
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 15A60, 15A63, 26B12

description: Perusal of research articles that deal with the topic of matrix calculus reveal two different approaches to calculation of the gradient of a real-valued function of a symmetric matrix leading to two different results. In the mechanics and physics communities, the gradient is calculated using the definition of a \frechet derivative, irrespective of whether the argument is symmetric or not. However, members of the statistics, economics, and electrical engineering communities use another notion of the gradient that explicitly takes into account the symmetry of the matrix, and this "symmetric gradient" $G_s$ is reported to be related to the gradient $G$ computed from the \frechet derivative with respect to a general matrix as $G_s = G + G^T - G \circ I$, where $\circ$ denotes the elementwise Hadamard product of the two matrices. We demonstrate that this relation is incorrect, and reconcile both these viewpoints by proving that $G_s = \mathrm{sym}(G)$.
description: 11 pages
Personen-, System- und Situationsmerkmale als Einflussfaktoren auf den problemlösenden Umgang mit technischen Alltagsgeräten
Creators: name: Stemmann, Jennifer
name: Lang, Martin
Publisher: name: Journal of Technical Education (JOTED)
Year: 2016

description: Um die im Alltag vermehrt vorausgesetzte Fähigkeit zum problemlösenden Umgang mit technischen Geräten im allgemeinbildenden Technikunterricht fördern zu können, widmet sich dieser Beitrag der Frage, wodurch die Interaktion mit einem technischen Gerät überhaupt zu einem Problem wird. Hierzu werden auf Grundlage soziotechnischer Systeme Merkmale auf Ebene der Systeme, der Situation und der ein System bedienenden Personen ausgemacht, von denen ein Einfluss auf die Problemsituation anzunehmen ist. Die empirisch ermittelten Schwierigkeitsindizes können mithilfe multipler Regressionsanalysen zu einem großen Teil durch die Merkmale Komplexität und Transparenz erklärt werden. Von den angenommenen Zusammenhängen zu angrenzenden Konstrukten konnte nur ein verhältnismäßig geringer Teil bestätigt werden. Schlüsselwörter: Problemlösen, Techniknutzung, Alltagsgeräte, soziotechnische Systeme, Merkmale einer Problemsituation
description: Journal of Technical Education (JOTED), Bd. 4 Nr. 2 (2016): Journal of Technical Education (JOTED)
Flow instability in the die entrance region of a capillary rheometer using a vinyl copolymer solution
Creators: name: Strain, John James Graham.
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.
The Impact of Financial Development on Economic Growth of Ethiopia
Creators: name: Tessema, Aklilu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: The study focuses on the investigation of the financial development proxies that affect the economic growth of Ethiopia. The purpose of this study is, therefore, to investigate the significant determinants and recommend courses of action to be taken by authorities. Quantitative research approach is applied using econometric model estimated VAR multiple linear regression and descriptive quantitative analysis technique. The study has found that in the short run, except two indicators of financial development (DC/GDP & PC/DC), all other variables turned out to be statistically insignificant. But in the long run, all proxies of financial development have far reaching statistically significant impact on the economic growth of Ethiopia. The paper concluded that the development of financial sector significantly affects the performance of the economy. The main recommendations are : Strengthening of the trade balance and openness, cut budgetary deficit, increase in the interest rate, and the NBE shall take measures that enhance financial inclusion and improve the platform of required infrastructure in collaboration with the designated organs of the government.
Non-Archimedean meromorphic solutions of functional equations
Creators: name: Hu, Pei-Chu
name: Luan, Yong-Zhi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: Primary 11S80, 12H25, Secondary 30D35

description: In this paper, we discuss meromorphic solutions of functional equations over non-Archimedean fields, and prove analogues of the Clunie lemma, Malmquist-type theorem and Mokhon'ko theorem.
Energiemündigkeit von Schülerinnen und Schülern am Ende der Sekundarstufe I - Konzeptionalisierung eines Modells zur Energiemündigkeit und Entwicklung eines darauf basierenden Testwerkzeugs
Creators: name: Fletcher, Stefan
name: Deutsch, Johannes
Publisher: name: Journal of Technical Education (JOTED)
Year: 2016

description: Die technische Energienutzung ist ein elementares Schlüsselproblem der Menschheit. Entsprechend ist eine Bildung zur Energiemündigkeit unbestritten von großer Bedeutung für eine Teilhabe an der gesellschaftlichen Entwicklung. Zur Beschreibung des komplexen Konstrukts Energiemündigkeit wurde eine Modellvorstellung auf Basis systemtheoretischer Konzepte entwickelt, die sowohl kognitive und affektive Wissenskomponenten einer Person als auch systematisch situative Anwendungskontexte, in denen sich Wissen entfalten kann, mit berücksichtigt. Aus dem Modell wurde ein reliables und valides Testinstrument abgeleitet. In einer ersten Studie bearbeiteten 305 Schüler am Ende der Sekundarstufe I den Test. Hohe Werte im affektiven Bereich deuten darauf hin, dass die Schüler ein Bewusstsein für Energieprobleme haben. Niedrige Werte im kognitiven Teil legen hingegen nahe, dass die Schüler durch Misskonzepte und unzureichendes Wissen, nur eingeschränkt am gesell-schaftlichen Energiediskurs teilnehmen können. Schlüsselwörter: Energiebildung, Energiemündigkeit, Sekundarstufe I, Testentwicklung
description: Journal of Technical Education (JOTED), Bd. 4 Nr. 2 (2016): Journal of Technical Education (JOTED)
Mathematical Foundations of the GraphBLAS
Creators: name: Kepner, Jeremy
name: Aaltonen, Peter
name: Bader, David
name: Buluc, Aydın
name: Franchetti, Franz
name: Gilbert, John
name: Hutchison, Dylan
name: Kumar, Manoj
name: Lumsdaine, Andrew
name: Meyerhenke, Henning
name: McMillan, Scott
name: Moreira, Jose
name: Owens, John D.
name: Yang, Carl
name: Zalewski, Marcin
name: Mattson, Timothy
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Software (cs.MS)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The GraphBLAS standard (GraphBlas.org) is being developed to bring the potential of matrix based graph algorithms to the broadest possible audience. Mathematically the Graph- BLAS defines a core set of matrix-based graph operations that can be used to implement a wide class of graph algorithms in a wide range of programming environments. This paper provides an introduction to the mathematics of the GraphBLAS. Graphs represent connections between vertices with edges. Matrices can represent a wide range of graphs using adjacency matrices or incidence matrices. Adjacency matrices are often easier to analyze while incidence matrices are often better for representing data. Fortunately, the two are easily connected by matrix mul- tiplication. A key feature of matrix mathematics is that a very small number of matrix operations can be used to manipulate a very wide range of graphs. This composability of small number of operations is the foundation of the GraphBLAS. A standard such as the GraphBLAS can only be effective if it has low performance overhead. Performance measurements of prototype GraphBLAS implementations indicate that the overhead is low.
description: 9 pages; 11 figures; accepted to IEEE High Performance Extreme Computing (HPEC) conference 2016. arXiv admin note: text overlap with arXiv:1504.01039
Global propagator for the massless Dirac operator and spectral asymptotics
Creators: name: Capoferri, Matteo
name: Vassiliev, Dmitri
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: primary 35L45, secondary 35Q41, 58J40, 58J45, 35P20

description: We construct the propagator of the massless Dirac operator $W$ on a closed Riemannian 3-manifold as the sum of two invariantly defined oscillatory integrals, global in space and in time, with distinguished complex-valued phase functions. The two oscillatory integrals -- the positive and the negative propagators -- correspond to positive and negative eigenvalues of $W$, respectively. This enables us to provide a global invariant definition of the full symbols of the propagators (scalar matrix-functions on the cotangent bundle), a closed formula for the principal symbols and an algorithm for the explicit calculation of all their homogeneous components. Furthermore, we obtain small time expansions for principal and subprincipal symbols of the propagators in terms of geometric invariants. Lastly, we use our results to compute the third local Weyl coefficients in the asymptotic expansion of the eigenvalue counting functions of $W$.
description: Final version, to appear in Integral Equations and Operator Theory
Generic Vanishing Fails for Surfaces in Positive Characteristic
Creators: name: Filipazzi, Stefano
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We show that there exist smooth surfaces violating Generic Vanishing in any characteristic $p \geq 3$. As a corollary, we recover a result of Hacon and Kovács, producing counterexamples to Generic Vanishing in dimension 3 and higher.
description: 12 pages, Bollettino dell'Unione Matematica Italiana (2017)
Relative cellular algebras
Creators: name: Ehrig, Michael
name: Tubbenhauer, Daniel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Representation Theory (math.RT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: In this paper we generalize cellular algebras by allowing different partial orderings relative to fixed idempotents. For these relative cellular algebras we classify and construct simple modules, and we obtain other characterizations in analogy to cellular algebras. We also give several examples of algebras that are relative cellular, but not cellular. Most prominently, the restricted enveloping algebra and the small quantum group for $\mathfrak{sl}_{2}$, and an annular version of arc algebras.
description: 39 pages, many figures, revised version, to appear in Transform. Groups, comments welcome
The Relationship between National Saving and Economic Growth in Ethiopia: ARDL and Granger causality Approaches
Creators: name: Mesfin, Abel
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: Achieving a high and stable economic growth rate is an important issue for every country as economic growth is crucial for economic development. The objective of the paper is to investigate relationship between savings and economic growth in Ethiopia. The study analyzes the long-run causality between national saving and economic growth in Ethiopia"s economy. Annual data for the period 1975-2013 is used; an Autoregressive Distributed Lag Model and Granger causality are attributed for the empirical results. The results of the study show that there is a negative and insignificant impact of savings on economic growth. In addition Granger causality test showed that there is a unidirectional causality from gross national product to national savings.
Thermodynamics of a one-dimensional self-gravitating gas with periodic boundary conditions
Creators: name: Kumar, Pankaj
name: Miller, Bruce N.
name: Pirjol, Dan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the thermodynamical properties of a one-dimensional gas with one-dimensional gravitational interactions, and placed in a uniform mass background. Periodic boundary conditions are implemented as a modification of the potential consisting of a sum over mirror images (Ewald sum), regularized with an exponential cut-off. The system has a phase transition at a critical temperature. Above the critical temperature the gas density is uniform, while below the critical point the system becomes inhomogeneous. Numerical simulations of the model confirms the existence of the phase transition, and are in good agreement with the theoretical results.
description: 45 pages, 13 figures, 3 tables
Die Soziotechnik (in) der Technikdidaktik
Creators: name: Pfenning, Uwe
Publisher: name: Journal of Technical Education (JOTED)
Year: 2016

description: Schon Goethes Faustus plagte nach all seinen akademischen Bemühen die Frage zur Effizienz seines Wissens. Heute könnte ihm die moderne Technikdidaktik dabei helfen, seine Fachdidaktik zu überwinden und sich einer inter- und transdisziplinären Vermittlung von Technik und ihrer Technologien zu zuwenden. Zunehmend emanzipiert sich „die“ Technik-didaktik von ihrer fachlichen methodischen Begrenztheit hin zur eigenen Wissenschafts-disziplin - mit Assoziationen zur Wissenschaftskommunikation und Technikfolgen-abschätzung. Ihre theoretische Entsprechung findet dieser Ansatz in der Soziotechnik. Ihr praktisches Pendant ist ein Sozio-MINT. Aber auch ihre eigenen technischen Medien helfen der Technikdidaktik sich zu einer Sozio-MINT-Didaktik zu entwickeln. Schlüsselwörter: Soziotechnik, Sozio-MINT, Technikdidaktik, Technikmündigkeit, Technik-emanzipation
description: Journal of Technical Education (JOTED), Bd. 4 Nr. 2 (2016): Journal of Technical Education (JOTED)
Heat and mass transfer in regenerators operating at high temperatures and humidity ratios
Creators: name: Kholosi, F.
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.
Plasmon enhanced optical tweezers with gold-coated black silicon
Creators: name: Kotsifaki, Domna G.
name: Kandyla, Maria
name: Lagoudakis, Pavlos G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Plasmonic optical tweezers are a ubiquitous tool for the precise manipulation of nanoparticles and biomolecules at low photon flux, while femtosecond-laser optical tweezers can probe the nonlinear optical properties of the trapped species with applications in biological diagnostics. In order to adopt plasmonic optical tweezers in real-world applications, it is essential to develop large-scale fabrication processes without compromising the trapping efficiency. Here, we develop a novel platform for continuous wave (CW) and femtosecond plasmonic optical tweezers, based on gold-coated black silicon. In contrast with traditional lithographic methods, the fabrication method relies on simple, single-step, maskless tabletop laser processing of silicon in water that facilitates scalability. Gold-coated black silicon supports repeatable trapping efficiencies comparable to the highest ones reported to date. From a more fundamental aspect, a plasmon-mediated efficiency enhancement is a resonant effect, and therefore, dependent on the wavelength of the trapping beam. Surprisingly, a wavelength characterization of plasmon-enhanced trapping efficiencies has evaded the literature. Here, we exploit the repeatability of the recorded trapping efficiency, offered by the gold-coated black silicon platform, and perform a wavelength-dependent characterization of the trapping process, revealing the resonant character of the trapping efficiency maxima. Gold-coated black silicon is a promising platform for large-scale parallel trapping applications that will broaden the range of optical manipulation in nanoengineering, biology, and the study of collective biophotonic effects.