cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Injective Envelopes of $C^*$-algebras as Operator Modules
Creators: name: Frank, Michael
name: Paulsen, Vern I.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46L08, 46L01

description: In this paper we give some characterizations of M. Hamana's injective envelope I(A) of a C*-algebra A in the setting of operator spaces and completely bounded maps. These characterizations lead to simplifications and generalizations of some known results concerning completely bounded projections onto C*-algebras. We prove that I(A) is rigid for completely bounded A-module maps. This rigidity yields a natural representation of many kinds of multipliers as multiplications by elements of I(A). In particular, we prove that the(n times iterated) local multiplier algebra of A embeds into I(A). Some remarks on local left/right/quasi multiplier algebras as subsets of I(A) are added.
description: LaTeX2e (amsart). to appear in Pacific J. Math
Galaxy mass-size segregation in the cosmic web from the CAVITY parent sample
Creators: name: Perez, I.
name: Gil, L.
name: Ferre-Mateu, A.
name: Torres-Rios, G.
name: Zurita, A.
name: Argudo-Fernandez, M.
name: Bidaran, B.
name: Sanchez-Menguiano, L.
name: Ruiz-Lara, T.
name: Dominguez-Gomez, J.
name: Puertas, S. Duarte
name: Espada, D.
name: Falcon-Barroso, J.
name: Florido, E.
name: Garcia-Benito, R.
name: Jimenez, A.
name: Peletier, R. F.
name: Román, J.
name: Alarcon, P. Sanchez
name: Sanchez-Blazquez, P.
name: Vasquez-Bustos, P.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The mass-size relation is a fundamental galaxy scaling law closely tied to galaxy formation and evolution. Using added-value products of the Calar Alto Void Integral-field Treasury surveY (CAVITY) and SDSS DR16 images, we examine the effect of large-scale environments on the stellar mass-size relation. We analyse the Petrosian R50 and R90 radii of approximately 140000 galaxies in voids, filaments, and clusters, with a mass range of $10^{8.5} - 10^{11} M_{\odot}$. We explore the relation in terms of galaxy morphology and star formation history, parametrised by T50, T70, and T90. We find that early-type void galaxies are, on average, 10-20% smaller than their counterparts in denser environments, regardless of their mass assembly history. Moreover, the mass-size relation for massive early-type void galaxies has a shallower slope compared to those in denser regions. In contrast, early-type galaxies in filaments, and clusters show a more uniform mass-size relation. Late-type cluster galaxies with stellar masses $log(M_{\star} / M_{\odot}) = 9 - 10.5$ are smaller and more concentrated than their counterparts in lower-density environments, such as filaments, and voids. We conclude that large-scale environments influence the mass-size relation. Early-type galaxies appear to grow most of their mass during the initial formation phase. Subsequent size growth in voids is less significant, likely due to slower evolution, reduced minor merger activity, fewer accretion events, or a combination. The flatter slope for massive void galaxies indicates a lower rate of minor accretion, a trend also observed in late-type void galaxies with $\approx 10^{10.5} M_{\odot}$, where minor mergers contribute to size growth. Conversely, late-type quenched cluster galaxies are smaller due to environmental interactions, with early infallers being most affected.
description: 12 pages. Paper accepted for publication in A&A
title: A concise guide to reproducible research using secondary data
Creators: name: Blankart, Katharina
name: Miele, Kai
name: Ivets, Maryna
name: Goetjes, Eva
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2022
Subjects: subject: Data Literacy
subject: 310

description: This study guide is a resource for graduate students, PhD candidates, and early career researchers performing applied empirical research in economics and management sciences. The guide is meant for the field of analysis of health care markets using secondary data. Many textbook examples use readily available datasets for analysis of econometric problems. For students developing a related research question and generating their own analysis dataset, important steps that lead to a final analysis dataset are often missing. Additionally, many resources focus on labor economics problems. Resources that showcase processing and generating secondary data are scarce. One reason is that data sources used in health care applications are often subject to confidentiality and data protection issues. This guide explains the five essential steps needed to create a reproducible research project. We introduce important terminology, highlight relevant tasks, and provide key resources in the form of textbooks and websites available via open access. We provide a concise guide that users can easily access when starting academic research. Each section takes about 10 to 15 minutes to read. We do not cover any specific data science or econometric method, but point to the relevant resources. To use this guide most efficiently, users are required to have basic knowledge in statistics, econometrics and program evaluation methods. Users should be familiar with one essential programming language and one major statistical package such as R or Stata. For maximum benefit readers should have background knowledge and a research idea for their own reproducible project in mind.
Supplementary document for Continuous Material Reflectance Map forDeep Photometric Stereo - 6153087.pdf
Creators: name: Prouteau, Nicolas
name: Joubert, Clément
name: Bringier, Benjamin
name: Majdi, Khoudeir
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplement 1
title: België: Speurtocht door een onbekend koninkrijk in het hart van Europa. Deel 1: België - Vlaanderen - Wallonië
Creators: name: :None
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2021
Subjects: subject: 370

description: Das Unterrichtsmaterial België: Speurtocht door een onbekend koninkrijk in het hart van Europa ist für den Niederländischunterricht in der Oberstufe konzipiert und erscheint in zwei Teilen. Im hier veröffentlichten Teil 1 België - Vlaanderen - Wallonië werden Grundkenntnisse über die Geschichte und Kultur des gesamten Landes vermittelt. In Teil 2 Zevenstedentocht werden ausgewählte Städte unter Berücksichtigung spezifischer Themen präsentiert, verfügbar unter: https://doi.org/10.17185/duepublico/75969.
On conditional expectations of finite index
Creators: name: Frank, M.
name: Kirchberg, E.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: For a conditional expectation E on a (unital) C*-algebra A there exists a real number K>=1 such that the mapping (K.E-id_A) is positive if and only if there exists a real number L>=1 such that the mapping (L.E-id_A) is completely positive, among other equivalent conditions. The estimate min(K) <= min(L) <= min(K).[min(K)] is valid, where [.] denotes the integer part of a real number. As a consequence the notion of a 'conditional expectation of finite index' is identified with that class of conditional expectations, which extends and completes results of M. Pimsner, S. Popa; M. Baillet, Y. Denizeau, J.-F. Havet; Y. Watatani, and others. Situations for which the index value and the Jones' tower exist are described in the general setting. In particular, the Jones' tower always exists in the W*-case and for Ind(E) in E(A) in the C*-case. Furthermore, normal conditional expectations of finite index commute with the general W*-projections to their finite, infinite, discrete and continuous type I, type II_1, type II_\infty and type III parts, i.e. the respective projections in the centers of the initial and the image W*-algebra coincide. We give an interpretation of our result in terms of non-commutative topology and indicate some dimension estimation formulae and an inequality.
description: LaTeX 2.09, 22 pages, no macros, no figures, references updated
title: België: Speurtocht door een onbekend koninkrijk in het hart van Europa. Deel 2: Zevenstedentocht
Creators: name: :None
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2021
Subjects: subject: 370

description: Das Unterrichtsmaterial België: Speurtocht door een onbekend koninkrijk in het hart van Europa ist für den Niederländischunterricht in der Oberstufe konzipiert und erscheint in zwei Teilen. In Teil 1 België - Vlaanderen - Wallonië werden Grundkenntnisse über die Geschichte und Kultur des gesamten Landes vermittelt, verfügbar unter: https://doi.org/10.17185/duepublico/75968. Im hier veröffentlichten Teil 2 Zevenstedentocht werden ausgewählte Städte unter Berücksichtigung spezifischer Themen präsentiert.
The use of optimization programs in the Canadian wood products sector
Creators: name: Prpic, Ivan
Publisher: name: The University of British Columbia
Year: 2013

description: The international wood products sector has historically been an extremely volatile and competitive which has forced companies to find ways to gain competitive advantages in order to succeed. The Canadian companies within the industry that have found the most international success are the ones who have been able to continually develop optimization programs to aid in reaching both their long- and short-goals. Applied optimization programs have been able to improve a company’s operations by minimizing costs, increasing efficiency, and increasing output. Optimization programs, if structured and constructed properly, can be applied a variety of ways into many of the operations occurring within the wood products industry. This report aims to provide a breakdown of optimization models, an analysis of how they incorporated into operations, and an overview of what kind of optimization programs are used in the wood products sector.
Competition Between For-Profit and Non-Profit Firms: Incentives, Workers’ Self-Selection, and Wage Differentials
Creators: name: Barigozzi, Francesca
name: Burani, Nadia
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2016
Subjects: SECS-P/01 Economia politica

description: We study optimal non-linear contracts offered by two firms competing for the exclusive services of workers, who are privately informed about their ability and motivation. Firms differ in their organizational form, and motivated workers are keen to be hired by the non-profit firm because they adhere to its mission. If the for-profit firm has a competitive advantage over the non-profit firm, the latter attracts fewer high-ability workers with respect to the former. Moreover, workers exert more effort at the for-profit than at the non-profit firm despite the latter distorts effort levels upwards.
Finally, a wage penalty emerges for non-profit workers which is partly due to compensating effects (labor donations by motivated workers) and partly due to the negative selection of ability into the non-profit firm. The opposite results hold when it is the non-profit firm that has a competitive advantage.
Symmetric approximation of frames and bases in Hilbert spaces
Creators: name: Frank, M.
name: Paulsen, V. I.
name: Tiballi, T. R.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We consider existence and uniqueness of symmetric approximation of frames by normalized tight frames and of symmetric orthogonalization of bases by orthonormal bases in Hilbert spaces H . More precisely, we determine whether a given frame or basis possesses a normalized tight frame or orthonormal basis that is quadratically closest to it, if there exists such frames or bases at all. A crucial role is played by the Hilbert-Schmidt property of the operator (P-|F|), where F is the adjoint operator of the frame transform F*: H --> l_2 of the initial frame or basis and (1-P) is the projection onto the kernel of F. The result is useful in wavelet theory.
description: 16 pages, LaTeX2e, no macros, no figures, submitted
Injective envelopes and local multiplier algebras of C*-algebras
Creators: name: Frank, Michael
Publisher: name: arXiv
Year: 1999
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: The local multiplier C*-algebra M_{loc}(A) of any C*-algebra A can *-isomorphicly embedded into the injective envelope I(A) of A in such a way that the canonical embeddings of A into both these C*-algebras are identified. If A is commutative then M_{loc}(A) = I(A) . The injective envelopes of A and M_{loc}(A) always coincide, and every higher order local multiplier C*-algebra of A is contained in the regular monotone completion \bar{A} in I(A) of A . In case the set Z(A).A is dense in A the center of the local multiplier C*-algebra of A is the local multiplier C*-algebra of the center of A, and both they are *-isomorphic to the injective envelope of the center of A . A Wittstock type extension theorem for completely bounded bimodule maps on operator bimodules taking values in M_{loc}(A) is proven to hold if and only if M_{loc}(A) = I(A). In general, a solution of the problem for which C*-algebras A the C*-algebras M_{loc}(A) is injective is shown to be equivalent to the solution of I. Kaplansky's 1951 problem whether all AW*-algebras are monotone complete.
description: 10 pages, LaTeX2e, one statement and its proof corrected
A review on Cross Laminated Timber (CLT) and its possible application in North America
Creators: name: Xu, Shikai
Publisher: name: The University of British Columbia
Year: 2013

description: Cross laminated timber (CLT) is a new building system to North America. Europe is the leading region of applying and manufacturing CLT. European producers stay to a proprietary manufacturing approach as the European (EN) standard is still being developed. This paper provides a general review of the background, process, and performance of CLT. Some case studies of its current applications were summarized. The pros and cons of applying CLT in North America were also discussed. In North America, CLT standard has been developed as a bi-nation standard for both US and Canada. CLT buildings can perform better than the minimum building code requirements in terms of fire and seismic performance. With additional materials, CLT can be in compliance with acoustic and thermal insulation. In recent years, CLT has been picking up its trend in North America, especially in Canada. Current building codes limitations to wood construction and proper product and design standards are the main obstacles preventing CLT’s wide spread in North America. In conclusion, in order to gain market acceptance, changes to the building codes and development of standards are needed.
So geschlossen wie nötig, so offen wie möglich - Datenschutz beim Umgang mit Forschungsdaten
Creators: name: Voigt, Pia
Publisher: name: Zenodo
Year: 2024
Subjects: Forschungsdaten
Forschungsdatenmanagement
Research Data
Research Data Management
Datenschutz

description: Der Umgang mit personenbezogenen Daten stellt Forschende oft vor rechtliche Herausforderungen: Unter welchen Bedingungen dürfen personenbezogene Daten verarbeitet werden? Welche Voraussetzungen müssen erfüllt sein und welche Strategien können angewendet werden, um Daten sicher speichern, verarbeiten, teilen und aufbewahren zu können? Mit Hilfe dieses Foliensatzes erhalten Sie Einblicke in datenschutzrechtliche Aspekte beim Umgang mit Ihren Forschungsdaten.
ATS-STEM Definitief Uitvoeringsverslag
Creators: name: Fernández-Morante, Carmen
name: Fernández de la Iglesia, J. Carmen
name: Cebreiro López, Beatriz
name: Casal Otero, Lorena
name: Latorre Ruiz, Enrique
name: Mareque-León, Francisco
Publisher: name: Zenodo
Year: 2022
Subjects: Evaluative research
Holistic teaching
Interdisciplinary teaching
Educational innovation
STEM education

description: his executive research report has been developed within the framework of work package 5 of the European project "Assessment of Transversal Skills in STEM (ATS-STEM) and has been carried out by the educational technology group of the University of Santiago de Compostela (http://tecnoeduc.es) and are available from the project website: https://www.atsstem.eu/resources/ It contains the executive summary of the research report produced under work package 5 of the project. It reports in abbreviated form on the evaluative research conducted and the results obtained following the pilot conducted in schools in 7 European countries. This publication is complemented by the full transnational research report carried out within the framework of the project which will be disseminated through publications in scientific journals of impact. For more information, refer to carmen.morante@usc.es
title: Die „Inquiry“ im politischen Problemlösungsprozess: Eine Anwendung der pragmatischen Problemlösungsheuristik von John Dewey im Kontext einer aktuellen politischen Fragestellung
Creators: name: Lehmann, Matthias
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2022
Subjects: subject: 320

description: Idealus: Schriftenreihe des Instituts für Politikwissenschaften der Universität Duisburg-Essen, vol. 4
ATS-STEM Informe final ejecutivo
Creators: name: Fernández-Morante, Carmen
name: Fernández de la Iglesia, J. Carmen
name: Cebreiro López, Beatriz
name: Casal Otero, Lorena
name: Latorre Ruiz, Enrique
name: Mareque-León, Francisco
Publisher: name: Zenodo
Year: 2022
Subjects: Evaluative research
Holistic teaching
Interdisciplinary teaching
Educational innovation
STEM education

description: This executive research report has been developed within the framework of work package 5 of the European project "Assessment of Transversal Skills in STEM (ATS-STEM) and has been carried out by the educational technology group of the University of Santiago de Compostela (http://tecnoeduc.es) and are available from the project website: https://www.atsstem.eu/resources/ It contains the executive summary of the research report produced under work package 5 of the project. It reports in abbreviated form on the evaluative research conducted and the results obtained following the pilot conducted in schools in 7 European countries. This publication is complemented by the full transnational research report carried out within the framework of the project which will be disseminated through publications in scientific journals of impact. For more information, refer to carmen.morante@usc.es
The Passive House and its significance for the future of the Canadian construction industry
Creators: name: Hiebert, Matthias
Publisher: name: The University of British Columbia
Year: 2013

description: This report will discuss the significance of the Passive House in Canada. The objective is to show that the Passive House standard is a viable construction method, which will benefit the Canadian construction industry, as well as the consumer - the home owner - and the environment by reducing the environmental footprint and running costs while providing a comfortable home to the owner. This report is laid out to discuss the significance of the Passive House not only in Europe, specifically looking at the origins in Germany (where the first Passive House was built), but most importantly, its significance in Canada. Firstly, the concept of the Passive House will be explained, and guidelines as well as the reasoning behind the creation of the Passive House will be considered. Positive and negative aspects of the Passive House will be analyzed to determine its overall benefits. Next we will look at the components of a comfortable living space, and determine how the Passive House is able to provide such a space by enumerating some of the technical details regarding the construction. Furthermore, we will compare different techniques used not only in Canada but also in Europe and determine what impact the Passive House would have on the Canadian industry, especially the construction industry. To conclude, a case study will be performed looking at how a Passive House can be built in Canada. The performance of said house will be analyzed, and the cost will be looked at to determine whether the Passive House technology is viable in Canada in the immediate or distant future.
title: Ausgabe 01/2022: “Well-being”: eine studentische Freizeitaktivität oder Lernmotivation?: Wie Lehrende den Erfolg ihrer Studierenden fördern können, indem sie sich trauen, eine Handlungsidee zu übernehmen, die gesundheitsfördernd wirken kann.
Creators: name: Dincer, Derya
name: Latta, Michelle
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2022
Subjects: subject: 3
subject: 370

description: komdim.de ist ständig auf der Suche nach mehr Vielfalt und hat zwei Akteur:innen ermutigt, sich mit eigenen Ideen einzubringen. Es handelt sich somit um die erste Ausgabe der „Diversität konkret“, die von Studierenden verfasst wurde.
description: Diversität konkret: Handreichung für das Lehren und Lernen an Hochschulen
title: Digitale Medien als empirische Settings – Analyse einer DGS-Lernsituation mithilfe des CSC-Modells
Creators: name: Dilling, Frederik
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2022
Subjects: subject: 370
subject: 510

description: Im Fokus dieses Beitrags steht das CSC-Modell, welches zur Analyse von Wissensentwicklungsprozessen in empirischen Kontexten im Mathematikunterricht entwickelt wurde. Dieses Modell wird im Beitrag beschrieben und zur Analyse einer Lernsituationen mit einem GeoGebra-Applet aus dem Bereich der Integralrechnung herangezogen.
description: Digitales Lernen in Distanz und Präsenz: Herbsttagung 2021 des Arbeitskreises Mathematikunterricht und digitale Werkzeuge in der Gesellschaft für Didaktik der Mathematik am 24.09.2021, p. 9
title: Youth politics in the time of pandemic: A view from Asian cities
Creators: name: Sonia Lam-Knott
name: Yi'En Cheng
Publisher: name: Asia Research Institute
Year: 2020
Subjects: Asian Cities
China
Covid-19
Politics
Urban Asia
Youth

description: The Covid-19 pandemic has highlighted varied displays of self-sufficiency among Asian youths in response to governments’ inadequacy to redress societal concerns.
title: Der Kreis – bei GeoGebra ein Kegelschnitt – und was es für den Unterricht bedeutet
Creators: name: Dutkowski, Wilfried
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2022
Subjects: subject: 370
subject: 510

description: Wenn man in GeoGebra einen Kreis konstruiert und eine objektdefinierte Aufstellung im Algebrafenster betrachtet, heißt diese Objektgruppe KEGELSCHNITT. Aus der unterrichtlichen Erfahrung bedeutet dies, dass interessierte Schüler:innen nachfragen, warum der Kreis ein Kegelschnitt ist. Unterstützt wird diese Neugierde, wenn dann in der Werkzeugleiste ‚Kegelschnitte durch 5 Punkte‘ angeboten, bzw. Parabeln, Ellipsen und Hyperbeln mit kryptischen Piktogrammen symbolisiert werden. In diesem Artikel werden der Kreis als Kegelschnitt für die Sekundarstufe I aus unterrichtlicher Erfahrung vorgestellt, sowie Verbindungen zu den funktionalen und algebraischen Strukturen aufgezeigt, aber auch Stolpersteine und Grenzen digitalen Handelns thematisiert. Im Fokus steht dabei eine Lerngruppe des zweiten Bildungsweges, also junge Erwachsene, die einen der Abschlüsse der Sekundarstufe I nachholen.
description: Digitales Lernen in Distanz und Präsenz: Herbsttagung 2021 des Arbeitskreises Mathematikunterricht und digitale Werkzeuge in der Gesellschaft für Didaktik der Mathematik am 24.09.2021, p. 17
The Effects of In Ovo Cortisol Exposure on Behaviour and Stress Axis Organization in the Threespine Stickleback Gasterosteus aculeatus
Creators: name: Kingwell, Callum
Publisher: name: The University of British Columbia
Year: 2015

description: Amongst vertebrates, transfer of maternal glucocorticoid (GC) stress hormones to developing embryos through egg yolk (in ovo) or in utero is documented in a variety of species. This phenomenon has attracted attention in recent years because of the significant physiological and behavioural consequences of this early-life GC exposure and their potential relevance to human health and disease progression. Prenatal programming by maternal glucocorticoid exposure has also been proposed to play a role in adaptation, although natural systems in which to test this hypothesis are lacking. In this study, in ovo cortisol treatment of threespine stickleback eggs at physiologically significant levels is used to test the effects of maternal glucocorticoids on juvenile brain expression levels of three candidate stress-axis genes (GR1, GR2, and POMC), and on three stress-linked behaviours thought to be sensitive to maternal GC levels (aggression, boldness, and shoaling). In rats, glucocorticoid receptor (GR) down-regulation leading to reduced glucocorticoid feedback sensitivity and a subsequent increase in stress-axis reactivity is thought to explain decreases in aggression and boldness that often follow maternal GC elevation in that species. I report that, contrary to the bulk of findings in mammalian studies, GR1 and GR2 expression levels in cortisol-treated fish are higher than those seen in untreated fish. Although cortisol treatment influenced gene expression, neither shoaling, aggression nor boldness were strongly influenced by treatment. Sex differences in boldness and aggression levels matched previously described results, which suggests behavioural assaysthat GC-mediated maternal effects on offspring behaviour may not be attributable exclusively to yolk cortisol increases, or perhaps that behavioural changes may have been too subtle to be detected at the dosage used. Ultimately, this study identifies persistent offspring GR up-regulation as a potential consequence of elevated maternal glucocorticoid levels in fish. The diverse roles of GR in physiological and behavioural regulation suggest that the consequences of this up-regulation for survival outcomes are probably complex, a fact that future studies investigating the adaptive significance of glucocorticoid-mediated maternal effects in fish should take care to consider.
title: Kein Mensch lernt digital, aber ...
Creators: name: Elschenbroich, Hans-Jürgen
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2022
Subjects: subject: 370
subject: 510

description: Dies ist eine ganz persönliche Antwort auf das Buch „Kein Mensch lernt digital“ von Ralf Lankau. Man findet in seinem Buch viele unstrittige allgemein-pädagogische Aussagen zu Medien und Lernen. Aber es gibt auch viele weiße Flecken, wenn es didaktisch beim Lernen in der Schule und insbesondere im Fachunterricht Mathematik konkret werden sollte. Nach allgemeinen Überlegungen zu Digitalität im Mathematik-Unterricht geht es dann darum, an konkreten Beispielen zu zeigen, wo und wie digitale Werkzeuge und Lernumgebungen beim Lehren und Lernen von Mathematik fruchtbar sein können.
description: Digitales Lernen in Distanz und Präsenz: Herbsttagung 2021 des Arbeitskreises Mathematikunterricht und digitale Werkzeuge in der Gesellschaft für Didaktik der Mathematik am 24.09.2021, p. 25
title: Beurteilungsprozesse angehender Lehrkräfte bei der Analyse interaktiver Arbeitsblätter
Creators: name: Engelhardt, Alex
name: Roth, Jürgen
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2022
Subjects: subject: 370
subject: 510

description: Obwohl einem zielgerichteten digitalen Medieneinsatz viele Potentiale zugesprochen werden, bleibt der Einsatz digitaler Medien im Mathematikunterricht gering. Eine mögliche Ursache könnte das diesbezüglich ausbaufähige Professionswissen von Mathematiklehrkräften sein. Vor diesem Hintergrund werden im vorliegenden Beitrag die für das Unterrichten mit interaktiven Arbeitsblättern zu funktionalen Zusammenhängen benötigten Fähigkeiten zusammenstellt und in Beziehung zu bekannten Professionswissensmodellen gesetzt. Darauf aufbauend wird eine Studie vorgestellt, in der untersucht wird, wie angehende Mathematiklehrkräfte bei der Beurteilung von interaktiven Arbeitsblättern vorgehen und wie die zugehörigen Fähigkeiten gefördert werden können.
description: Digitales Lernen in Distanz und Präsenz: Herbsttagung 2021 des Arbeitskreises Mathematikunterricht und digitale Werkzeuge in der Gesellschaft für Didaktik der Mathematik am 24.09.2021, p. 33
Εκτελεστική έκθεση ATS-STEM
Creators: name: Fernández-Morante, Carmen
name: Fernández de la Iglesia, J. Carmen
name: Cebreiro López, Beatriz
name: Casal Otero, Lorena
name: Latorre Ruiz, Enrique
name: Mareque-León, Francisco
Publisher: name: Zenodo
Year: 2022
Subjects: Evaluative research
Holistic teaching
Interdisciplinary teaching
Educational innovation
STEM education

description: This executive research report has been developed within the framework of work package 5 of the European project "Assessment of Transversal Skills in STEM (ATS-STEM) and has been carried out by the educational technology group of the University of Santiago de Compostela (http://tecnoeduc.es) and are available from the project website: https://www.atsstem.eu/resources/ It contains the executive summary of the research report produced under work package 5 of the project. It reports in abbreviated form on the evaluative research conducted and the results obtained following the pilot conducted in schools in 7 European countries. This publication is complemented by the full transnational research report carried out within the framework of the project which will be disseminated through publications in scientific journals of impact. For more information, refer to carmen.morante@usc.es
title: Leistungsheterogenität in einer digitalen Lernumgebung zum Modellieren
Creators: name: Frenken, Lena
name: Greefrath, Gilbert
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2022
Subjects: subject: 370
subject: 510

description: Digitale Lernumgebungen zum Modellieren können in vielerlei Hinsicht wertvoll sein. So besteht etwa die Möglichkeit, Aufgaben realistischer zu präsentieren. Weiterhin bietet auch die Analyse der Prozessdaten neue Forschungsansätze. Es wird über eine Studie berichtet, bei der 42 Lernende zwei Wochen lang in einer digitalen Lernumgebung zum Modellieren arbeiteten. Da während dieser Arbeitsphase differente Bearbeitungsprozesse auftreten konnten, wird unter qualitativen Gesichtspunkten sowie mit Variablen aus den Prozessdaten, das Potenzial der Lernumgebung zum Umgang mit Leistungsheterogenität analysiert. Es zeigt sich, dass nicht nur die Modellierungsleistung heterogen ist, sondern auch verschiedene mathematische Modelle mit unterschiedlichen digitalen Werkzeugen konstruiert werden. Auch die implementierten GeoGebra-Tutorials wurden sehr heterogen genutzt.
description: Digitales Lernen in Distanz und Präsenz: Herbsttagung 2021 des Arbeitskreises Mathematikunterricht und digitale Werkzeuge in der Gesellschaft für Didaktik der Mathematik am 24.09.2021, p. 41
title: Automatisierte Aufgabentrainings – Unterstützung des Lernprozesses durch ergänzende Onlinetrainings?
Creators: name: Götz, Gerhard
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2022
Subjects: subject: 370
subject: 510

description: In den Jahren 2020 und 2021 wurden an der Duale Hochschule Baden-Württemberg (DHBW) Mosbach automatisierte, adaptive Online-Trainingseinheiten unter anderem auch im Rahmen der Vertiefung des Stoffs vollumfänglich digitalisierter mathematischer Vorkurse in der Vorstudienphase angeboten. Diese Trainings sind themenspezifisch und kamen für die elementaren Themengebiete Arithmetik, Potenzen-Wurzeln-Logarithmen, Gleichungen und Funktionen zum Einsatz. Es wird das Konzept, der Einsatz und die Evaluation dieser Online-Trainings vorgestellt und bezüglich Indizien für vorzeitige Trainingsabbrüche untersucht.
description: Digitales Lernen in Distanz und Präsenz: Herbsttagung 2021 des Arbeitskreises Mathematikunterricht und digitale Werkzeuge in der Gesellschaft für Didaktik der Mathematik am 24.09.2021, p. 49
title: Virtueller Inverted Classroom – Kurs versus Präsenzkurs: Lernfortschritte durch die Mathematikvorkurse an der DHBW Mosbach im Vergleich
Creators: name: Hamich, Myriam
name: Götz, Gerhard
name: Brüstle, Moritz
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2022
Subjects: subject: 370
subject: 510

description: An der Dualen Hochschule Baden-Württemberg Mosbach wurden 2020 Präsenzkurse durch vollumfänglich digitalisierte Vorkurse im virtualisierten Inverted-Classroom-Konzept ersetzt. Kennzeichnend waren dauerhaft, persönlich erreichbare Lehrpersonen und eigens für diesen Einsatz erstellte, didaktisch aufbereitete Lehrvideos. Im Rahmen der vorliegenden Arbeit wird durch die Differenz von parallelisierten Pre- und Posttests der Lernzuwachs in Abhängigkeit von der Teilnahme an einem klassischen Präsenzkurs aus dem Jahr 2019 und dem virtualisierten Präsenzkurs aus dem Jahr 2020 verglichen. Durch Interpretation der einfaktoriellen ANOVA mit post-hoc Tests konnten signifikante Unterschiede im Lernzuwachs durch Besuch eines Präsenzkurses festgestellt werden. Die beiden Formate der Präsenzkurse unterscheiden sich dagegen nicht signifikant, so dass eine gleichwertige Wirksamkeit des neuen Kursformats im Vergleich zum Vorjahr angenommen wird.
description: Digitales Lernen in Distanz und Präsenz: Herbsttagung 2021 des Arbeitskreises Mathematikunterricht und digitale Werkzeuge in der Gesellschaft für Didaktik der Mathematik am 24.09.2021, p. 57
Detailing the lives of those working in the fishing fleet at the North Pacific Cannery
Creators: name: Chan, Derrick
Publisher: name: The University of British Columbia
Year: 2013

description: The Pacific West Coast fishing industry was one of the largest economies at the turn of the 20th century. One cannery that contributed to the historic staple economy of British Columbia is the North Pacific Cannery Heritage Site. This paper examines the lives of those working in the fishing fleet at the North Pacific Cannery from 1900-1950. In doing so, this paper aims to provide a narrative for the fishermen and their connections to the developments that occurred within the fishing industry at the time. Such developments include the rise of the industry and the multitude of ethnic minorities that became fishermen for the North Pacific Cannery. Primary information was found through the University of British Columbia Special Collections and Archives fonds of the Anglo-British Columbia Company's records on the Cannery and through Professor Diane Newell's writings on Henry Doyle's fonds. Secondary resources were found through historical texts about the industry in British Columbia. This paper finds that the Japanese, Chinese and First Nations workforce at the cannery were pivotal to the success and growth of the British Columbia fishing industry by providing cheap, exploitable labor. Mechanization and technological change to fishing that occurred during the 1920s affected the fishing fleet at the North Pacific Cannery differently than the rest of the province. Northern rivers and canneries were slower to adopt technological change. Furthermore, world events such as World War II undoubtedly shaped the day-to-day live of fishermen at the Cannery in examples of anti-Orientalist legislation and the sentiments and discriminatory practices seen throughout the industry's history.
Complexity and perspective taking: young adult literature 2000–2020 and social justice
Creators: name: Ansbach, Jennifer Lyn
Publisher: name: No Publisher Supplied
Year: 2024

description: Book banning in public schools and libraries is on the rise across the country, and extremist anti-democratic ideologies have become more pervasive in American culture over the past ten years, working to dismantle inclusive, participatory democracy. This dissertation seeks to examine how young adult literature published between 2000 and 2020 provide diverse representations of individuals and groups historically excluded from dominant American culture and narratives, and how these books can contribute to the larger project of social justice through their inclusion in classrooms. This qualitative study first analyzes the content of young adult books and trends broadly through several critical lenses, including settler colonialism; racial capitalism; feminist, queer, and crip theories; and how resistant readings of these texts can help surface issues of systemic oppression and injustice. Then, a survey of sixteen high school English teachers from across the continental United States who use student-selected diverse books for student independent reading was analyzed through simple percentages and constructivist grounded theory. The questions, adapted from existing social justice scale tools, allowed for an examination of the results through teachers’ perceptions of student reactions associated with social justice mindsets. The data supported teacher observations that self-selecting diverse books increased students’ beliefs associated with social justice. This research demonstrates the value of both access to diverse texts through independent reading and also offers direction for meaningful professional development for educators to show students how to read about other cultures ethically, to expand student awareness of social justice, and increase the likelihood of students becoming active participants in an inclusive democracy for all.
ATS-STEM Abschlussbericht
Creators: name: Fernández-Morante, Carmen
name: Fernández de la Iglesia, J. Carmen
name: Cebreiro López, Beatriz
name: Casal Otero, Lorena
name: Latorre Ruiz, Enrique
name: Mareque-León, Francisco
Publisher: name: Zenodo
Year: 2022
Subjects: Evaluative research
Holistic teaching
Interdisciplinary teaching
Educational innovation
STEM education

description: This executive research report has been developed within the framework of work package 5 of the European project "Assessment of Transversal Skills in STEM (ATS-STEM) and has been carried out by the educational technology group of the University of Santiago de Compostela (http://tecnoeduc.es) and are available from the project website: https://www.atsstem.eu/resources/ It contains the executive summary of the research report produced under work package 5 of the project. It reports in abbreviated form on the evaluative research conducted and the results obtained following the pilot conducted in schools in 7 European countries. This publication is complemented by the full transnational research report carried out within the framework of the project which will be disseminated through publications in scientific journals of impact. For more information, refer to carmen.morante@usc.es
title: Stellungnahme zur Anhörung zum „Entwurf eines Gesetzes zur Erhöhung des Schutzes durch den gesetzlichen Mindestlohn und zu Änderungen im Bereich der geringfügigen Beschäftigung“ in Berlin am 16.05.2022
Creators: name: Hüttenhoff, Frederic
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2022
Subjects: subject: 300

description: Kurz gefasst: Die Erhöhung des gesetzlichen Mindestlohns auf 12 € ist ein wichtiger Schritt, um für rund 20 % der abhängig Beschäftigten die Stundenlöhne zu erhöhen. Profitieren werden vor allem Frauen, gering Qualifizierte, Beschäftigte in kleinen Betrieben ohne Tarifbindung sowie atypisch Beschäftigte. Getrübt wird der positive Ausblick auf anhaltende Berichte von Verstößen gegen den Mindestlohn. Hier offenbaren sich strukturelle Einfallstore für die Nichteinhaltung, die häufig systemischer Natur sind. Besonders Minijobber*innen, gering Qualifizierte, Beschäftigte in kleinen Betrieben, Erwerbstätige mit wechselnden Arbeitszeiten und Einsatzorten sowie geringer Tarifbindung und fehlender Mitbestimmung sind oft von Verstößen betroffen. Die mit der Erhöhung des Mindestlohns verbundene Anhebung und Dynamisierung der Geringfügigkeitsgrenze verfestigt falsche Anreize und erweist sich als politischer Fehler. Insbesondere für Frauen stellen Minijobs zu oft eine biographische Sackgasse dar, die zu Versorgungs-, Armuts- und Abhängigkeitsproblemen führt. Zudem hat es sich in der Corona-Pandemie als besonders nachteilig erwiesen, dass Minijobber*innen keinen Anspruch auf Arbeitslosengeld und Kurzarbeitergeld haben. Maßnahmen für eine bessere Einhaltung und Durchsetzung von Mindestlöhnen reichen von einer Stärkung der Tarifbindung über eine Erhöhung der unternehmerischen Verantwortung bis hin zu einer Erleichterung der Selbstkontrolle der Beschäftigten. Die Kontrolle und Durchsetzung von Mindestlöhnen hängt entscheidend von der korrekten Erfassung der Arbeitszeit ab. Hierfür braucht es eine elektronische und manipulationssichere Aufzeichnung der Arbeitszeit, auf die die Beschäftigten auch ohne Betriebsrat das Recht zur Einsicht und ggf. zur Korrektur von unzutreffenden Angaben haben. Bei den Minijobs muss die Geringfügigkeitsgrenze nicht erhöht, sondern deutlich abgesenkt werden, um Anreize zur Aufnahme einer sozialversicherungspflichtigen Beschäftigung zu erhöhen. Ergänzend sind weitere grundlegende Reformen im Bereich des Steuer- und Sozialversicherungsrechts notwendig.
description: IAQ-Standpunkte, vol. 2022, no. 01b
SEASONAL MIGRATION IN THARPARKAR DISTRICT OF SINDH PROVINCE, PAKISTAN: An In-depth Empirical Analysis
Creators: name: Talpur, Musharaf
Publisher: name: figshare
Year: 2022
Subjects: subject: 140201 Agricultural Economics
subject: FOS: Economics and business
subject: Economics

description: This study thoroughly investigates the influence of poverty-related characteristics of poor households, such as socioeconomic, livelihood, and distance characteristics, on their decision to seasonally migrate from the Tharparkar district of Sindh province to nearby districts where seasonal livelihood and employment opportunities exist in irrigated agriculture. The study was carried out using multi-stage cluster sampling and data was collected through face-to-face interviews using a questionnaire. We estimated a binary logit model and subsequently tested hypotheses about the influence of those poverty-related characteristics on poor households’seasonal migration. Our hypothesestesting results exhibit that poverty among the households, existing in their low household income, indebtedness, child labour, lack of access to drinking water and health services, are the major factors behind seasonal migration. To encounter the adverse effect of poverty on seasonal migration, we suggested several policy measures overall related to food security, water availability and economic opportunities, such as access to interest-free credit, livestock marketing, and promotion of handicrafts.
title: Verstehensorienterte Online-Diagnostik – Ein SMARTer Weg
Creators: name: Klingbeil, Katrin
name: Rösken, Fabian
name: Barzel, Bärbel
name: Schacht, Florian
name: Thurm, Daniel
name: Kortenkamp, Ulrich
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2022
Subjects: subject: 370
subject: 510

description: Der SMART-Test ist ein digitales Diagnose-Werkzeug, das nicht nur oberflächlich in den Dimensionen „richtig/falsch“ diagnostiziert, sondern tiefergehende, verstehensorientierte Erkenntnisse mit geringem Zeitaufwand liefert. Dies erfolgt durch Tests zu gezielten Kompetenzen und einem digitalen Auswertungssystem. Die Lehrkraft erhält zu jedem:jeder Schüler:in den Stand bzgl. Fehlvorstellungen und individueller Verstehensstufe. Diese diagnostischen Informationen sind kombiniert mit gezielten Förderhinweisen. Die SMART-Tests entstehen im Rahmen des Deutschen Zentrums für Lehrerbildung (DZLM) für den deutschsprachigen Raum auf der Grundlage von insgesamt 130 SMART-Tests für die Sekundarstufe I, die in Australien entwickelt wurden. Neben Übersetzung und Adaption fokussiert die begleitende Forschung einerseits das Potenzial zur Kompetenzentwicklung auf Schüler:innenebene und andererseits, inwieweit der Einsatz von SMART-Tests für die Professionalisierung der Lehrkräfte förderlich ist.
description: Digitales Lernen in Distanz und Präsenz: Herbsttagung 2021 des Arbeitskreises Mathematikunterricht und digitale Werkzeuge in der Gesellschaft für Didaktik der Mathematik am 24.09.2021, p. 65
Discovery of 19 strongly-lensed quasars, dual and projected quasars in DESI-LS
Creators: name: He, Zizhao
name: Chen, Qihang
name: Deng, Limeng
name: Shu, Yiping
name: Li, Rui
name: Li, Nan
name: Shi, Dongdong
name: Li, Guoliang
Publisher: name: arXiv
Year: 2025
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report the follow-up spectroscopic confirmation of two lensed quasars, six dual quasars, and eleven projected quasars that were previously identified as lensed-quasar candidates in \cite{He2023}. The spectroscopic data were obtained from two different sources: the P200/DBSP in California and publicly available datasets, including SDSS and DESI-EDR. The two lensed quasars (both pairs) have the following properties: $θ_E$ = 1.208'', $z_s$ = 3.105; $θ_E$ = 0.749, $z_s$ = 2.395. The six dual quasars have redshifts ranging from 0.58 to 3.28 and projected separations ranging from 15.44 to 22.54 kpc, with a mean separation of 17.95 kpc. The eleven projected quasars have projected separations ranging from 10.96 to 39.07 kpc, with a mean separation of 22.64 kpc. Additionally, there are three likely lensed quasars that cannot be definitively confirmed, contributed by two reasons. Firstly, their image separations (0.83'', 0.98'', and 0.93'') are small compared to the seeing conditions during our observations (around 1.2''). Secondly, no high SNR lensing galaxy can be detected in the Legacy Survey Imaging. Better spectroscopy and (or) imaging are needed to confirm their lensing nature.
description: 12 Figures, 15 Pages, 6 Tables. Accepted by A&A. Comments are welcome!
Analyzing the Household Determinants of Poverty and their Impact on Public Primary School Dropouts in Rural Sindh, Pakistan
Creators: name: Talpur, Musharaf
Publisher: name: figshare
Year: 2022
Subjects: subject: Economics
subject: 140204 Economics of Education
subject: FOS: Economics and business

description: This study aims to analyze the household determinants of poverty and their impact on public primary school dropout rates in rural Sindh, Pakistan. Primary data was collected from the parents of children living in the villages of Matiari and Badin districts, and multiple linear regression analysis was performed comparing split and combined samples of these two rural districts. Study results found that the selected determinants of poverty, such as personal income, age, land-cultivation, land-holding, household migration, elderly children’s education and distance to market, significantly influenced public primary schools dropouts on the whole, however, the significance of the same variables varied across these districts. Dropouts in Badin district are more influenced by the rural economy based determinants of poverty than the same in Matiari, where semi urban economy based determinants of poverty are relatively more important. Our findings, therefore, suggest that policies aimed at discouraging primary school dropout rates must tackle these issues in a distinct way, keeping in view varying significance of the determinants of poverty and their impact on dropouts across different districts of Sindh province.