cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
One-loop renormalization of a gravity-scalar system
Creators: name: Park, I. Y.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Extending the renormalizability proposal of the physical sector of 4D Einstein gravity, we have recently proposed renormalizability of the 3D physical sector of gravity-matter systems. The main goal of the present work is to conduct systematic one-loop renormalization of a gravity-matter system by applying our foliation-based quantization scheme. In this work we explicitly carry out renormalization of a gravity-scalar system with a Higgs-type potential. With the fluctuation part of the scalar field gauged away, the system becomes renormalizable through a metric field redefinition. We use dimensional regularization throughout. One of the salient aspects of our analysis is how the graviton propagator acquires the"mass" term. One-loop calculations lead to renormalization of the cosmological and Newton's constants. We discuss other implications of our results as well: time-varying vacuum energy density and masses of the elementary particles as well as the potential relevance of Neumann boundary condition for black hole information.
description: 48 pages, 5 figures, sign error in eq.(6) (with all affected eqs) corrected
title: Choice is suffering
title: a focused information criterion for model selection
titleType: AlternativeTitle
Creators: name: Behl, Peter
name: Dette, Holger
name: Frondel, Manuel
name: Tauchmann, Harald
Publisher: name: Technische Universität Dortmund
Year: 2010
Subjects: subject: AKAIKE Information Criterion
subject: SCHWARZ Information Criterion
subject: Translog Cost Function
subject: 310
subject: 330
subject: 620

description: In contrast to conventional measures, the Focused Information Criterion (FIC) allows the purpose-specific selection of models, thereby reflecting the idea that one kind of model might be appropriate for inferences on a parameter of interest, but not for another. Ever since its introduction, the FIC has been increasingly applied in the realm of statistics, but this concept appears to be virtually unknown in the economic literature. Using a straightforward analytical example, this paper illustrates the FIC and its usefulness in economic applications. JEL classification: C3, D2
description: Discussion Paper / SFB 823;42/2010
Вестник Комплексного научно-исследовательского института им. Х.И. Ибрагимова РАН,Выпуск 3 (3) 2020
Creators: name: КНИИ РАН
Publisher: name: КНИИ РАН
Year: 2020

description: Вестник Комплексного научно-исследовательского института им. Х.И. Ибрагимова РАН,Выпуск 3 (3) 2020
Fig. S6: Vegetational change during the Middle–Late Pennsylvanian transition in western Pangaea
Creators: name: Schachat, Sandra
name: Baresch, Andrés
name: Bui, Thu
name: Falcon-Lang, Howard J.
name: Chaney, Dan S.
name: Nelson, W. John
name: Elrick, Scott D.
name: Kerp, Hans
name: Lucas, Spencer G.
name: DiMichele, William A.
Publisher: name: Geological Society of London
Year: 2023
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: The mean laminar width in each bed, from the taxon-dependent shuffling procedure, with trait values decreasing towards the top of the section, resampled to estimate uncertainty.
Transition formulas for involution Schubert polynomials
Creators: name: Hamaker, Zachary
name: Marberg, Eric
name: Pawlowski, Brendan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: The orbits of the orthogonal and symplectic groups on the flag variety are in bijection, respectively, with the involutions and fixed-point-free involutions in the symmetric group $S_n$. Wyser and Yong have described polynomial representatives for the cohomology classes of the closures of these orbits, which we denote as $\hat{\mathfrak{S}}_y$ (to be called involution Schubert polynomials) and $\hat{\mathfrak{S}}^{\tt FPF}_y$ (to be called fixed-point-free involution Schubert polynomials). Our main results are explicit formulas decomposing the product of $\hat{\mathfrak{S}}_y$ (respectively, $\hat{\mathfrak{S}}^{\tt FPF}_y$) with any $y$-invariant linear polynomial as a linear combination of other involution Schubert polynomials. These identities serve as analogues of Lascoux and Schützenberger's transition formula for Schubert polynomials, and lead to a self-contained algebraic proof of the nontrivial equivalence of several definitions of $\hat{\mathfrak{S}}_y$ and $\hat{\mathfrak{S}}^{\tt FPF}_y$ appearing in the literature. Our formulas also imply combinatorial identities about involution words, certain variations of reduced words for involutions in $S_n$. We construct operators on involution words based on the Little map to prove these identities bijectively. The proofs of our main theorems depend on some new technical results, extending work of Incitti, about covering relations in the Bruhat order of $S_n$ restricted to involutions.
description: 31 pages; v2: updated references and acknowledgments; v3: added references, minor corrections; v4: a few more references, examples, and corrections, final version
(200208) Percival Hart Dyke
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
title: Origin of carbonatites—liquid immiscibility caught in the act
Creators: name: Berndt, Jasper
name: Klemme, Stephan
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2023
Subjects: subject: 550 Earth sciences

description: Carbonatites are rare but worldwide occurring igneous rocks and their genesis remains enigmatic. Field studies show a close spatial but controversially debated genetic relationship with alkaline silicate rocks, and petrological and experimental studies indicate liquid immiscibility from mantle-derived magmas being one viable model for the generation of carbonatites. However, unaltered carbonatitic melts are rare and the composition of primary carbonate liquids and their silicate conjugates is poorly constrained. Here we show an example of primary Ca-carbonatitic melt formed by liquid immiscibility from a phonolitic magma of the Laacher See volcano (Eifel, Germany). The conjugate blebs of carbonate-silicate liquids are found in hauyne-hosted melt inclusions. The Ca-carbonatite melts are moderately alkali-rich and contain high F and Cl at elevated SiO2 and Al2O3 concentrations. Such carbonatite liquids are viable parental magmas to the globally dominating intrusive Ca-carbonatite complexes and may provide the missing link to extrusive Na-carbonatitic magmas.
description: Finanziert über die DEAL-Vereinbarung mit Wiley 2019-2022.
title: Measuring maladaptive personality traits with the Structured Clinical Interview for DSM-IV Axis II Screening Questionnaire using a common metrics approach
Creators: name: Krasniqi, Cameri
name: Müller, Steffen
name: Wendt, Leon Patrick
name: Fischer, Felix H.
name: Spitzer, Carsten
name: Zimmermann, Johannes
Publisher: name: Universität Kassel
Year: 2024
Subjects: subject: 150
subject: Persönlichkeitsstörung
subject: Klassifikation
subject: Fragebogen
subject: Modell

description: Gefördert im Rahmen des Projekts DEAL
Compsolacon Reitter 1905
Creators: name: Hoffmannova, Johana
name: Packova, Gabriela
name: Prosvirov, Alexander S.
name: Akhter, Muhammad Atique
name: Kundrata, Robin
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Elateridae
Compsolacon

description: Genus Compsolacon Reitter, 1905
Compsolacon Reitter, 1905. Type species: Elater crenicollis Ménétriés, 1832. For more information, including synonyms, see Prosvirov (2017) and Kundrata et al. (2019a). It should be noted that Compsolacon was either treated as a synonym of Agrypnus (e.g., Hayek 1973) or as a separate genus (e.g., Prosvirov 2017).
description: Published as part of Hoffmannova, Johana, Packova, Gabriela, Prosvirov, Alexander S., Akhter, Muhammad Atique & Kundrata, Robin, 2023, An updated catalogue of Agrypninae (Coleoptera: Elateridae) from Pakistan, pp. 281-305 in Zootaxa 5270 (2) on page 286, DOI: 10.11646/zootaxa.5270.2.6, http://zenodo.org/record/7864780
Sign-changing solutions for a class of zero mass nonlocal Schrödinger equations
Creators: name: Ambrosio, Vincenzo
name: Figueiredo, Giovany M.
name: Isernia, Teresa
name: Bisci, Giovanni Molica
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the following class of fractional Schrödinger equations $$ (-Δ)^α u + V(x)u = K(x) f(u) \mbox{in} \mathbb{R}^{N} $$ where $α\in (0, 1)$, $N>2α$, $(-Δ)^α$ is the fractional Laplacian, $V$ and $K$ are positive continuous functions which vanish at infinity, and $f$ is a continuous function. By using a minimization argument and a quantitative deformation lemma, we obtain the existence of a sign-changing solution. Furthermore, when $f$ is odd, we prove that the above problem admits infinitely many nontrivial solutions. Our result extends to the fractional framework some well-known theorems proved for elliptic equations in the classical setting. With respect to these cases studied in the literature, the nonlocal one considered here presents some additional difficulties, such as the lack of decompositions involving positive and negative parts, and the non-differentiability of the Nehari Manifold, so that a careful analysis of the fractional spaces involved is necessary.
description: Adv. Nonlinear Stud. (2018)
Fig. S9: Vegetational change during the Middle–Late Pennsylvanian transition in western Pangaea
Creators: name: Schachat, Sandra
name: Baresch, Andrés
name: Bui, Thu
name: Falcon-Lang, Howard J.
name: Chaney, Dan S.
name: Nelson, W. John
name: Elrick, Scott D.
name: Kerp, Hans
name: Lucas, Spencer G.
name: DiMichele, William A.
Publisher: name: Geological Society of London
Year: 2023
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: The mean laminar width in each bed, from the taxon-independent shuffling procedure, with trait values increasing towards the top of the section, resampled to estimate uncertainty.
(200183) Barclays Bank
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Weyl Bogoliubov excitations in Bose-Hubbard extension of Weyl semimetal
Creators: name: Wu, Ya-Jie
name: Zhou, Wen-Yan
name: Kou, Su-Peng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: In this paper, a Bose-Hubbard extension of a Weyl semimetal is proposed that can be realized for ultracold atoms using laser assisted tunneling and Feshbach resonance technique in three dimensional optical lattices. The global phase diagram is obtained consisting of a superfluid phase and various Mott insulator phases by using Landau theory. The Bogoliubov excitation modes for the weakly interacting case have nontrivial properties (Weyl nodes, bosonic surface arc, etc.) analogs of those in Weyl semimetals of electronic systems, which are smoothly carried over to that of Bloch bands for the noninteracting case. The properties of the insulating phases for the strongly interacting case are explored by calculating both the quasiparticle and quasihole dispersion relation, which shows two quasiparticle spectra touch at Weyl nodes.
description: 10 pages, 4 figures
Vortex Entry and Nucleation of Antivortices in a Mesoscopic Superconducting Triangle
Creators: name: Bruyndoncx, V.
name: Ceulemans, A.
name: Chibotaru, L. F.
name: Moshchalkov, V. V.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
Dirac dark matter and $b \to s \ell^+ \ell^-$ with $\mathrm{U(1)}$ gauge symmetry
Creators: name: Celis, Alejandro
name: Feng, Wan-Zhe
name: Vollmann, Martin
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We revisit the possibility of a Dirac fermion dark matter candidate in the light of current $b \to s \ell^+ \ell^-$ anomalies by investigating a minimal extension of the Standard Model with a horizontal $\mathrm{U(1)}^{\prime}$ local symmetry. Dark matter stability is protected by a remnant $\mathcal{Z}_2$ symmetry arising after spontaneous symmetry breaking of $\mathrm{U(1)}^{\prime}$. The associated $Z^{\prime}$ gauge boson can accommodate current hints of new physics in $b \to s \ell^+ \ell^-$ decays, and acts as a vector portal between dark matter and the visible sector. We find that the model is severely constrained by a combination of precision measurements at flavour factories, LHC searches for dilepton resonances, as well as direct and indirect dark matter searches. Despite this, viable regions of the parameter space accommodating the observed dark matter relic abundance and the $b \to s \ell^+ \ell^-$ anomalies still persist for dark matter and $Z^{\prime}$ masses in the TeV range.
description: 12 pages, 2 figures
title: Vorstellungen zur linearen Algebra
title: Konstruktionsprozesse und –ergebnisse von Studierenden
titleType: AlternativeTitle
Creators: name: Fischer, Astrid
Publisher: name: Technische Universität Dortmund
Year: 2006
Subjects: subject: Lineare Algebra
subject: Vektorraum
subject: Abstraktion
subject: Grundvorstellungen
subject: Kognitive Modelle
subject: Denkstile
subject: Mathematikstudium
subject: Grundstudium
subject: 510

description: Die Vorlesung "Lineare Algebra", die Studierende des Lehramts Gymnasium im ersten Semester hören, gilt aufgrund ihres hohen Abstraktionsgrades als große Herausforderung. Die Arbeit fragt nach Vorstellungen, die Studierende zu zentralen Begriffen der linearen Algebra bilden, und nach Strategien, die sie verwenden, um ihre internen Repräsentationen fortzuentwickeln und zum Lösen von mathematischen Problemen einzusetzen. Diese Fragestellungen werden mit Hilfe von zwei qualitativen empirischen Studien untersucht. Die erste besteht aus drei Fallstudien mit ausführlichen Interviewgesprächen, die zweite analysiert schriftliche Äußerungen von 39 Studierenden. Die persönlichen Vorstellungen, die aufgrund der Datenanlysen bei den Studierenden vermutet werden, werden sodann auf ihre Tragfähigkeit für das weitere Lernen der linearen Algebra hin untersucht. Aus einigen von ihnen werden Grundvorstellungen abgeleitet, die zentralen Begriffen der linearen Algebra zugrunde liegen. Die individuellen Strategien und Vorstellungen der Studierenden geben zudem Anhaltspunkte für eine differenzierte Sicht von epistemologischen Schwierigkeiten, die mit diesen Grundvorstellungen verbunden sind.
Amtliche Mitteilungen der Technischen Universität Dortmund Nr.05/2009
Creators: name: (:Unkn) Unknown
Publisher: name: Technische Universität Dortmund
Year: 2009
Subjects: subject: 080

description: Austausch von Dienstsiegeln
description: Erste Ordndung zur Änderung der Geschäftsordnung des Senats der Technischen Universität Dortmund vom 13.02.2003
description: Neubekanntmachung des Geschäftsordnung des Senats der Technischen Universität Dortmund vom 23.10.2008
description: Amtliche Mitteilungen der Technischen Universität Dortmund ; 5, 2009
Fig. S12: Vegetational change during the Middle–Late Pennsylvanian transition in western Pangaea
Creators: name: Schachat, Sandra
name: Baresch, Andrés
name: Bui, Thu
name: Falcon-Lang, Howard J.
name: Chaney, Dan S.
name: Nelson, W. John
name: Elrick, Scott D.
name: Kerp, Hans
name: Lucas, Spencer G.
name: DiMichele, William A.
Publisher: name: Geological Society of London
Year: 2023
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: The mean laminar width in each bed, from the taxon-independent shuffling procedure, with trait values decreasing towards the top of the section, resampled to estimate uncertainty.
Espírito Vida e Morte Vol II
Creators: name: Zepherynus
Publisher: name: Zenodo
Year: 2021
Subjects: espírito, vida, morte, graal, Lúcifer

description: Mensagem do Graal - Roteiros II - Lúcifer e sua Teologia para a Morte Espiritual Continuação de Roteiro I - Deus, a Criação e a Lei
(200202) Sir James Weir Hogg
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
(200207) Reginald Charles Hart Dyke
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Diagramm und Algorithmus
Creators: name: Kadunz, Gert
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2009
Subjects: subject: 510

description: In der mathematikdidaktischen Literatur findet sich seit mehreren Jahren spätestens seit Hoffmann 2003 ein theoretischer Ansatz zur Interpretation und Organisation des Lernens von Mathematik, der unter dem Stichwort Semiotik zusammengefasst werden kann. Beispielhaft sei auf Themenhefte der ESM (2006/Bd. 61) sowie des JMD (2006/Bd.27, Nr.3/4) verwiesen. In den folgenden Ausführungen konzentriere ich mich unter Bezug auf die Semiotik des Ch. S. Peirce auf die Verwendung von Diagrammen bei der Entwicklung eines elementaren Algorithmus zur Lösung einer geometrischkinematischen Fragestellung. Dabei wird an einem Beispiel die Interpretation von Diagrammen vor allem in Gestalt von Skizzen und deren schrittweise Übersetzung in eine algorithmische Beschreibung eines Sachverhaltes vorgestellt.
(200212) Ion Grant Neville Keith-Falconer
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
The generalized Auslander-Reiten duality on an exact category
Creators: name: Jiao, Pengjie
Publisher: name: arXiv
Year: 2016
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 16G70, 16G20, 18E10

description: We introduce a notion of generalized Auslander-Reiten duality on a Hom-finite Krull-Schmidt exact category $\mathcal{C}$. This duality induces the generalized Auslander-Reiten translation functors $τ$ and $τ^-$. They are mutually quasi-inverse equivalences between the stable categories of two full subcategories $\mathcal{C}_r$ and $\mathcal{C}_l$ of $\mathcal{C}$. A non-projective indecomposable object lies in the domain of $τ$ if and only if it appears as the third term of an almost split conflation; dually, a non-injective indecomposable object lies in the domain of $τ^-$ if and only if it appears as the first term of an almost split conflation.
description: 12 pages
Fig. S3: Vegetational change during the Middle–Late Pennsylvanian transition in western Pangaea
Creators: name: Schachat, Sandra
name: Baresch, Andrés
name: Bui, Thu
name: Falcon-Lang, Howard J.
name: Chaney, Dan S.
name: Nelson, W. John
name: Elrick, Scott D.
name: Kerp, Hans
name: Lucas, Spencer G.
name: DiMichele, William A.
Publisher: name: Geological Society of London
Year: 2023
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: The mean laminar width in each bed, from the taxon-dependent shuffling procedure, with trait values increasing towards the top of the section, resampled to estimate uncertainty.
Testing for high-dimensional white noise using maximum cross-correlations
Creators: name: Chang, Jinyuan
name: Yao, Qiwei
name: Zhou, Wen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: We propose a new omnibus test for vector white noise using the maximum absolute auto-correlations and cross-correlations of the component series. Based on the newly established approximation by the $L_\infty$-norm of a normal random vector, the critical value of the test can be evaluated by bootstrapping from a multivariate normal distribution. In contrast to the conventional white noise test, the new method is proved to be valid for testing the departure from non-IID white noise. We illustrate the accuracy and the power of the proposed test by simulation, which also shows that the new test outperforms several commonly used methods including, for example, the Lagrange multiplier test and the multivariate Box-Pierce portmanteau tests especially when the dimension of time series is high in relation to the sample size. The numerical results also indicate that the performance of the new test can be further enhanced when it is applied to the pre-transformed data obtained via the time series principal component analysis proposed by Chang, Guo and Yao (2014). The proposed procedures have been implemented in an R-package HDtest and is available online at CRAN.
(200217) Alexander Frederick Bradshaw
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
title: Vereinfachen von Termen
title: Imitation von Handlungsroutinen oder gedankliches Durchdringen von Zusammenhängen?
titleType: AlternativeTitle
Creators: name: Fischer, Astrid
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2009
Subjects: subject: 510

description: Eine Stärke der algebraischen Sprache ist, dass man mit ihrer Hilfe kontextfrei äquivalente Aussagen erzeugen und so gezielt Veränderungen vornehmen kann. Aber Termumformungen haben für viele Schülerinnen und Schüler ihre Tücken. Oftmals werden Terme rein schematisch umgestellt, ohne dass die Lernenden einen Sinn für die Wirkung und Aussage dieser Transformationen entwickeln. Wenn die Regeln gut gelernt sind, können die betreffenden Schüler bei Standardaufgaben durchaus effektiv arbeiten. Aber wenn Aufgabentypen nicht mehr erinnert werden oder wenn sich Fehler einschleichen, führt diese Form des Lernens zu Hilflosigkeit. Malle (1993) hat eindrückliche Beispiele hierzu aufgeführt. Hier wird eine kleine Fallstudie vorgestellt, in der ein Fünftklässler, David, mit dem Vereinfachen von einem arithmetischen und einem algebraischen Term beschäftigt ist.
Flexible Designs in klinischen Prüfungen mit binärer und ordinaler Zielvariable
Creators: name: Stansen, Wibke
Publisher: name: Technische Universität Dortmund
Year: 2010
Subjects: subject: Flexibles Design
subject: Adaptiv gruppensequentielles Design
subject: Self-designing
subject: Binäre Zielvariable
subject: Ordinale Zielvariable
subject: 310

description: In dieser Arbeit werden klinische Studien mit flexiblem Design untersucht. Hierbei handelt es sich um in mehreren voneinander unabhängigen Stufenabschnitten durchgeführten Verfahren, die basierend auf den bis zu einem bestimmten Zeitpunkt vorliegenden Information Änderungen am Studiendesign erlauben. Zur Kombination der Ergebnisse der einzelnen Sequenzen werden die gewichtete inverse Normal- sowie die verallgemeinerte inverse x^2-Methode betrachtet (vgl. Hartung (2006)). Wird die Anzahl der Sequenzen fest vorgegeben, handelt es sich um adaptiv gruppensequentielle Verfahren. Diese ermöglichen neben der Anpassung des Studiendesigns eine Überprüfung des Testproblems in jeder Zwischenauswertung. Die durch das mehrfache Testen resultierende Erhöhung des Fehlers I. Art erfordert eine Adjustierung der kritischen Schranken. Hierfür werden die Strategien von Pocock (1977), O'Brien und Fleming (1979), Wang und Tsiatis (1987) sowie Haybittle (1971) und Peto et al. (1976) vorgestellt. Die beiden letzteren werden für die Kombination der Ergebnisse mit der inversen x^2-Methode übertragen. Die zugehörigen kritische Werte, welche mittels Simulationen erhalten wurden, werden angegeben. Kommt das Self-Designing klinischer Studien zur Anwendung, ist die Anzahl der Sequenzen zu Beginn der Untersuchung offen. Zudem wird die Gewichtung der einzelnen Stufen basierend auf den vorliegenden Beobachtungen bestimmt. Bei Verwendung der inversen x^2-{Methode kann in jeder Sequenz die Überprüfung der Nullhypothese erfolgen, bei der inversen Normalmethode hingegen erst nach Vergabe des globalen Gewichts. Neben der Überprüfung von Testproblemen ist die Abschätzung des Ausma es eines Wirkungsunterschieds von Interesse. Hierfür werden für die verschiedenen Designs geeignete Methoden für die Punkt- und Intervallschätzung vorgestellt. Für den Fall, dass in den Zwischenauswertungen kein Testen der Nullhypothese sondern nur eine Anpassung der Fallzahl erfolgt, wird ein unverzerrter Schätzer hergeleitet. Die in der Literatur vorgestellten flexiblen Designs basieren häufig auf der Annahme normalverteilter Zielvariable mit bekannter Varianz. Für die Untersuchung dieser Designs bei Vorliegen diskreter Beobachtungen werden klinische Studien mit binärer und ordinaler Zielgröße betrachtet. Für beide Fälle werden Möglichkeiten zur Ermittlung des notwendigen Umfangs basierend auf den vorliegenden Daten vorgestellt. Die verschiedenen flexiblen Designs werden für diese Art von Beobachtungen ausgiebig in Simulationsstudien untersucht. Insbesondere von Interesse ist hierbei, ob Prüfgrößen, welche bereits im nicht-sequentiellen Fall das Testniveau nur asymptotisch einhalten, in adaptiven Designs Anwendung finden können.
Amphetamines analysis in wastewaters - method performance of solid phase extraction - higher performance liquid chromatography mass spectrometry techniques (SPE-HPLC MS/MS)
Creators: name: Ajao, Usman L.
name: Mustapha, Aliru Olajide
Publisher: name: Technische Universität Dortmund
Year: 2011
Subjects: subject: amphetamine
subject: drug metabolites
subject: higher performance chromatography
subject: solid phase extraction
subject: wastewaters
subject: 610

description: Recently, many articles have reported different levels and distribution of amphetamine hitherto detected in biological fluids now appreciably found in aquatic environment at ng/L levels. Identification and measurement of amphetamine and its metabolites in surface and sewage waters using higher performance liquid chromatographic methodologies in the literatures now on current trend have provided information that are of scientific interest and effectively replaced immunological methods which only suggest the presence of these substances. Active research on both distribution and impacts of this important drug of abuse and related metabolites in the wastewaters are on-going.
description: EXCLI Journal ; Vol. 10, 2011
AN IOT BASED SINGLE USE DEVICE FOR COLLECTING BLOOD SAMPLES
Creators: name: Jha, Nishant
Publisher: name: figshare
Year: 2023
Subjects: Other biomedical and clinical sciences not elsewhere classified

description: Disclosed herein an IoT based single use device for collecting blood samples comprises a syringe (101), display of collected sample (102), collector (103), Battery (104), sample collection device (105), and capacitive liquid sensor (106). The device is an IoT based device which collects a fixed volume of blood for testing and analysis. The device is easy to use no training program is required for its use. The device prevents the wastage of samples and will take only the volume required for performing tests. The system will be single use and the storage container will be made of eco-friendly material such as bamboo containers which would be easy to dispose of. This will limit the medical waste which is otherwise very difficult to dispose of. The device would be made by keeping in mind the sustainable development goals.
Complex Laplacian based Distributed Control for Multi-Agent Network
Creators: name: Deshpande, Aniket
name: Jagtap, Pushpak
name: Bansode, Prashant
name: Mahindrakar, Arun
name: Singh, Navadeep
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: I.2.11

description: The work done in this paper, proposes a complex Laplacian-based distributed control scheme for convergence in the multi-agent network. The proposed scheme has been designated as cascade formulation. The proposed technique exploits the traditional method of organizing large scattered networks into smaller interconnected clusters to optimize information flow within the network. The complex Laplacian-based approach results in a hierarchical structure, with formation of a meta-cluster leading other clusters in the network. The proposed formulation enables flexibility to constrain the eigen spectra of the overall closed-loop dynamics, ensuring desired convergence rate and control input intensity. The sufficient conditions ensuring globally stable formation for proposed formulation are also asserted. Robustness of the proposed formulation to uncertainties like loss in communication links and actuator failure has also been discussed. The effectiveness of the proposed approach is illustrated by simulating a finitely large network of thirty vehicles.
description: 14 pages, 4 figures
An empirical investigation of neural networks, evolution strategies, and evolutionary trained neural networks and their application to some chemical engineering problems
Creators: name: Mandischer, Martin
Publisher: name: Universität Dortmund
Year: 2001
Subjects: subject: Neuronale Netze
subject: Evolutionäre Algorithmen
subject: Chemietechnik
subject: Simulation
subject: Stoffdaten
subject: 004

description: Evolutionary algorithms and neural networks have been successfully used to solve difficult problems in various domains. Researchers and practitioners have applied them as single paradigms or in combination with each other. Here the utility of CI methods in Chemical Engineering is investigated. The performance of neural networks and evolutionary algorithms and combinations of them on real engineering problems is shown. An encoding of chemical compounds is proposed that allows the application of both paradigms and establishes a basis for comparisons. Solutions found by CI methods are presented that compare to the best physically motivated methods known so far and even outperform them in several ways. During the design process of chemical plants the knowledge how chemicals react with each other ist very important. For this reason there is a need for calculation methods which are able to predict thermodynamic properties. In this work, properties under consideration concern either pure components where the heat of vaporization has to be predicted or mixtures where the heat of mixing should be predicted.
Non-parametric Morphologies of Mergers in the Illustris Simulation
Creators: name: Bignone, Lucas A.
name: Tissera, Patricia B.
name: Sillero, Emanuel
name: Pedrosa, Susana E.
name: Pellizza, Leonardo J.
name: Lambas, Diego G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study non-parametric morphologies of mergers events in a cosmological context, using the Illustris project. We produce mock g-band images comparable to observational surveys from the publicly available Illustris simulation idealized mock images at $z=0$. We then measure non parametric indicators: asymmetry, Gini, $M_{20}$, clumpiness and concentration for a set of galaxies with $M_* >10^{10}$ M$_\odot$. We correlate these automatic statistics with the recent merger history of galaxies and with the presence of close companions. Our main contribution is to assess in a cosmological framework, the empirically derived non-parametric demarcation line and average time-scales used to determine the merger rate observationally. We found that 98 per cent of galaxies above the demarcation line have a close companion or have experienced a recent merger event. On average, merger signatures obtained from the $G-M_{20}$ criteria anticorrelate clearly with the elapsing time to the last merger event. We also find that the asymmetry correlates with galaxy pair separation and relative velocity, exhibiting the larger enhancements for those systems with pair separations $d < 50$ h$^{-1}$ kpc and relative velocities $V < 350$ km s$^{-1}$. We find that the $G-M_{20}$ is most sensitive to recent mergers ($\sim0.14$ Gyr) and to ongoing mergers with stellar mass ratios greater than 0.1. For this indicator, we compute a merger average observability time-scale of $\sim0.2$ Gyr, in agreement with previous results and demonstrate that the morphologically derived merger rate recovers the intrinsic total merger rate of the simulation and the merger rate as a function of stellar mass.
description: 19 pages, 20 figures. Published in MNRAS
(200219) Ellen Hunt
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
title: Ein Beitrag zur Beschreibung des Fortschrittes elektrischer Schädigung in Wälzlagern
Creators: name: Harder, André
Publisher: name: UNSPECIFIED
Year: 2023

description: Elektrische Schäden in Wälzlagern sind eine häufige Ausfallursache elektrischer Antriebsmaschinen. Sie entstehen infolge von Potentialdifferenzen zwischen den stehenden und rotierenden Elementen des Lagers. Diese führen zu elektrischen Entladungen im Wälzkontakt, welche die Oberflächen der Wälzelemente sowie den Schmierstoff dazwischen schädigen und somit einen frühzeitigen Lagerausfall verursachen können. Obwohl das Phänomen seit Beginn des 20. Jahrhunderts bekannt ist, gibt es bisher keine ganzheitliche Beschreibung der Lebensdauer von Lagern bei elektrischer Last. Der in dieser Arbeit verfolgte Ansatz, einer solchen Beschreibung näher zu kommen, zielt darauf ab, eine Schädigungsskala zu definieren, die eine quantifizierbare Beschreibung des Schädigungszustandes der Lageroberfläche ermöglicht. Zunächst werden im Rahmen einer Versuchsreihe 16 Lager bei unterschiedlichen Betriebsbedingungen elektrisch geschädigt und dabei wird in regelmäßigen Abständen der Zustand der Laufbahnoberfläche erfasst. Von diesen Versuchsdaten ausgehend wird im ersten Schritt die elektrische Schädigung mithilfe einer komparativen Schädigungsskala bewertet. Darauf aufbauend werden Anforderungen an eine Schädigungsskala formuliert, die nicht nur eine qualitative oder komparative, sondern vor allem eine quantitative Bewertung elektrischer Lagerschädigung ermöglicht. Anschließend werden 45 unterschiedliche standardisierte Oberflächeneigenschaften auf ihre Eignung geprüft. Davon erfüllen 12 Oberflächeneigenschaften alle Anforderungen und können somit für eine Quantifizierung der Schädigung verwendet werden. Für diese Eigenschaften wird jeweils ein kritischer Grenzwert definiert. Im zweiten Schritt wird gezeigt, dass anhand der quantitativen Schädigungsskala die zeitliche Änderung der Schädigung infolge elektrischer Last beschrieben werden kann. Damit wird der Effekt der unterschiedlichen Betriebsbedingungen sowie deren Wechselwirkungen auf die zeitliche Änderung der Schädigung untersucht. Es zeigt sich, dass der Schädigungsfortschritt mit der Schmierfilmdicke im Wälzkontakt zunimmt. Im letzten Schritt wird gezeigt, dass die Quantifizierung des Schädigungszustandes mithilfe künstlicher neuronaler Netze auf Basis von Vibrationsdaten im Betrieb möglich ist. Dazu werden aus den Daten der Vibrationsmessung charakteristische Kennwerte (Features) abgeleitet. Diese Features werden zunächst selektiert, um redundante Features zu reduzieren. Anschließend wird mit 15 der 16 Versuchsdaten das neuronale Netz trainiert und die Funktionalität mit dem übrigen Datensatz validiert. Die Genauigkeit des erstellten Vorhersagemodells liegt im Rahmen der Varianz der Schädigung auf der Laufbahnoberfläche. Basierend auf den in dieser Arbeit gewonnenen Erkenntnissen lassen sich weitere Untersuchungen durchführen, mit dem Ziel, die Lebensdauer von Wälzlagern unter elektrischer Last ganzheitlich zu beschreiben. Ansätze für derlei Untersuchungen werden am Ende dieser Arbeit gegeben.
A nonparametric constancy test for copulas under mixing conditions
Creators: name: Van Kampen, Maarten
name: Wied, Dominik
Publisher: name: Technische Universität Dortmund
Year: 2010
Subjects: subject: copula
subject: mixing
subject: 310
subject: 330
subject: 620

description: This paper generalizes some recently proposed tests which examine if a copula is constant over time. The i.i.d. assumption underlying these tests is relaxed by imposing only strong mixing and it is shown that the resulting tests are consistent against the alternative of a structural break.
description: Discussion Paper / SFB 823;36/2010
Elongation factor-specific capture of RNA polymerase II complexes.
Creators: name: Gregersen, Lea H
name: Mitter, Richard
name: Svejstrup, Jesper Q
Publisher: name: The Francis Crick Institute
Year: 2023
Subjects: Model organisms
Biochemistry & Proteomics
Tumour Biology
Gene Expression
Genetics & Genomics
Genome Integrity & Repair
Chemical Biology & High Throughput
Computational & Systems Biology

description: Transcription of protein-coding genes is regulated by dynamic association of co-factors with RNA polymerase II (RNAPII). The function of these factors and their relationship with RNAPII is often poorly understood. Here, we present an approach for elongation-factor-specific mNET capture (ELCAP) of RNAPII complexes for sequencing and mass spectrometry analysis aimed at investigating the function of such RNAPII regulatory proteins. As proof of principle, we apply ELCAP to the RNAPII-associated proteins SCAF4 and SCAF8, which share an essential role as mRNA anti-terminators but have individual roles at the 3' end of genes. Mass spectrometry analysis shows that both SCAF4 and SCAF8 are part of RNAPII elongation complexes containing 3' end processing factors but depleted of splicing components. Importantly, the ELCAP sequencing (ELCAP-seq) profiles of SCAF4- and SCAF8-RNAPII complexes nicely reflect their function as mRNA-anti-terminators and their competing functions at the end of genes, where they prevent or promote transcriptional readthrough.
The evolution of superluminous supernova LSQ14mo and its interacting host galaxy system
Creators: name: Chen, T. -W.
name: Nicholl, M.
name: Smartt, S. J.
name: Mazzali, P. A.
name: Yates, R. M.
name: Moriya, T. J.
name: Inserra, C.
name: Langer, N.
name: Kruehler, T.
name: Pan, Y. -C.
name: Kotak, R.
name: Galbany, L.
name: Schady, P.
name: Wiseman, P.
name: Greiner, J.
name: Schulze, S.
name: Man, A. W. S.
name: Jerkstrand, A.
name: Smith, K. W.
name: Dennefeld, M.
name: Baltay, C.
name: Bolmer, J.
name: Kankare, E.
name: Knust, F.
name: Maguire, K.
name: Rabinowitz, D.
name: Rostami, S.
name: Sullivan, M.
name: Young, D. R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present and analyse an extensive dataset of the superluminous supernova (SLSN) LSQ14mo (z = 0.256), consisting of a multi-colour lightcurve from -30 d to +70 d in the rest-frame and a series of 6 spectra from PESSTO covering -7 d to +50 d. This is among the densest spectroscopic coverage, and best-constrained rising lightcurve, for a fast-declining hydrogen-poor SLSN. The bolometric lightcurve can be reproduced with a millisecond magnetar model with ~ 4 M_sol ejecta mass, and the temperature and velocity evolution is also suggestive of a magnetar as the power source. Spectral modelling indicates that the SN ejected ~ 6 M_sol of CO-rich material with a kinetic energy of ~ 7 x 10^51 erg, and suggests a partially thermalised additional source of luminosity between -2 d and +22 d. This may be due to interaction with a shell of material originating from pre-explosion mass loss. We further present a detailed analysis of the host galaxy system of LSQ14mo. PESSTO and GROND imaging show three spatially resolved bright regions, and we used the VLT and FORS2 to obtain a deep (five-hour exposure) spectra of the SN position and the three star-forming regions, which are at a similar redshift. The FORS spectrum at +300 days shows no trace of SN emission lines and we place limits on the strength of [O I] from comparisons with other Ic SNe. The deep spectra provides a unique chance to investigate spatial variations in the host star-formation activity and metallicity. The specific star-formation rate is similar in all three components, as is the presence of a young stellar population. However, the position of LSQ14mo exhibits a lower metallicity, with 12 + log(O/H) = 8.2 in both the R23 and N2 scales (corresponding to ~ 0.3 Z_sol). We propose that the three bright regions in the host system are interacting, which thus triggers star-formation and forms young stellar populations.
description: Accepted for publication in A&A
(200200) Isabella Clarissa Russell
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
On a theorem of Bishop and commutants of Toeplitz operators in $\mathbb{C}^n$
Creators: name: Sahutoglu, Sonmez
name: Tikaradze, Akaki
Publisher: name: arXiv
Year: 2016
Subjects: subject: Complex Variables (math.CV)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We prove an approximation theorem on a class of domains in $\mathbb{C}^n$ on which the $\overline{\partial}$-problem is solvable in $L^{\infty}$. Furthermore, as a corollary, we obtain a version of the Axler-Čučković-Rao Theorem in higher dimensions.
description: Title has changed and made major revisions to previous version
(200201) Theodore Harris
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
The OceanMAPS v4 sea-ice forecast demonstration project mk 2
Creators: name: Allen, Stewart C. R.
name: Brassington, Gary B.
name: Sakov, Pavel
name: Lieser, Jan L.
name: Beggs, Helen
name: Beckett, Duan
name: Fiedler, Russell
Publisher: name: Zenodo
Year: 2023
Subjects: sea-ice modelling, ocean modelling, coupled modelling, data assimilation

description: Presentation given at the IICWG 11th International Workshop on Sea Ice Modelling, Assimilation, Observations, Predictions and Verification, 21-23 March 2023 in Oslo, Norway