cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A study of electron beams and their formation in electrostatic electron guns
Creators: name: Goud, Paulus Arie
Publisher: name: University of British Columbia
Year: 2011

description: A theoretical study is made of the formation of electron beams in electrostatic fields. The electron motion is assumed to be normal, congruent and regular, so that the equations governing the motion can be set up in terms of the action function. By assuming convenient functional forms of the action function, of the potential and of the metrical coefficients, some new solutions are then found by the method of separation of variables. These solutions are studied in detail, and are shown to have some desirable properties. In order to employ a given space-charge flow solution in electron gun design, a method is developed to take into account the distortion of the field due to the anode aperture. In this method, the gun is considered to be made up of two regions, separated outside the beam by an auxiliary anode. The desired space-charge flow is assumed to exist in the cathode region, while in the anode region the effect of space-charge on the electrostatic field is assumed to be negligible. An estimate is made of the accuracy of these assumptions. The fields about four idealized anode geometries are obtained by using Schwarz-Christoffel transformations, and a study is made of the relevant properties of these fields. One of these fields, which has been called the "wrap-around field", is shown to have properties that are very desirable for convergent electron guns. The above design method is illustrated by two examples; namely, a gun producing a beam that is initially parallel and rectilinear, and a gun producing a beam that is initially radial and convergent; the latter incorporates the wrap-around field in the anode region. Physical considerations involved in the determination of the electrodes to maintain a given beam are briefly discussed, and it is shown that the sensitivity of the field conditions at the beam boundary to errors in the field at other locations decreases at an exponential rate with distance. A method is suggested for determining beam-forming electrodes that avoids the need for an auxiliary anode to maintain the beam.
Quantum Geometry of 3-Dimensional Lattices and Tetrahedron Equation
Creators: name: Bazhanov, Vladimir V.
name: Mangazeev, Vladimir V.
name: Sergeev, Sergey M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study geometric consistency relations between angles of 3-dimensional (3D) circular quadrilateral lattices -- lattices whose faces are planar quadrilaterals inscribable into a circle. We show that these relations generate canonical transformations of a remarkable "ultra-local" Poisson bracket algebra defined on discrete 2D surfaces consisting of circular quadrilaterals. Quantization of this structure allowed us to obtain new solutions of the tetrahedron equation (the 3D analog of the Yang-Baxter equation) as well as reproduce all those that were previously known. These solutions generate an infinite number of non-trivial solutions of the Yang-Baxter equation and also define integrable 3D models of statistical mechanics and quantum field theory. The latter can be thought of as describing quantum fluctuations of lattice geometry.
description: Plenary talk at the XVI International Congress on Mathematical Physics, 3-8 August 2009, Prague, Czech Republic
An intermediate black hole spin in the NLS1 galaxy SWIFT J2127.4+5654: chaotic accretion or spin energy extraction?
Creators: name: Miniutti, G.
name: Panessa, F.
name: De Rosa, A.
name: Fabian, A. C.
name: Malizia, A.
name: Molina, M.
name: Miller, J. M.
name: Vaughan, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have observed the hard X-ray selected Narrow-Line Seyfert 1 galaxy SWIFT J2127.4+5654 with Suzaku. We report the detection of a broad relativistic iron emission line from the inner accretion disc. By assuming that the inner edge of the accretion disc corresponds to the innermost stable circular orbit of the black hole spacetime, the line profile enables us to measure a black hole spin a= 0.6\pm0.2. However, a non-rotating Schwarzschild spacetime is excluded at just above the 3 sigma level, while a maximally spinning Kerr black hole is excluded at the ~5 sigma level. The intermediate spin we measure may indicate that accretion-driven black hole growth in this source proceeds through short-lived episodes with chaotic angular momentum alignment between the disc and the hole rather than via prolonged accretion. The measured steep emissivity index (q~5) constrains the irradiating X-ray source to be very centrally concentrated. Light bending may help focus the primary emission towards the innermost accretion disc, thus steepening the irradiation profile. On the other hand, steep profiles can also be reached if magnetic extraction of the hole rotational energy is at work. If this is the case, the interplay between accretion (spinning up the black hole) and rotational energy extraction (spinning it down) forces the hole to reach an equilibrium spin value which, under standard assumptions, is remarkably consistent with our measurement. Rotational energy extraction would then be able to simultaneously account for the intermediate spin and steep emissivity profile we infer from our spectral analysis without the need to invoke chaotic accretion episodes. (abridged)
description: MNRAS in press
Peccei--Quinn mechanism in gravity and the nature of the Barbero--Immirzi parameter
Creators: name: Mercuri, Simone
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A general argument provides the motivation to consider the Barbero--Immirzi parameter as a field. The specific form of the geometrical effective action allows to relate the value of the Barbero--Immirzi parameter to other quantum ambiguities through the analog of the Peccei--Quinn mechanism.
description: Accepted for publication on Phys. Rev. Lett
title: Konpetentzia digitalak. Graduko ikasleentzako formakuntza materialak: 4. Segurtasuna 4.4. Ingurunea babestea: 4.4.1. Energia aurrezteko gailuak nola erabili
title: Competencias digitales. Materiales de formación para estudiantes de grado: 4. Seguridad 4.4. Protección del entorno: 4.4.1. Cómo utilizar los dispositivos de forma óptima para ahorrar energía
Creators: name: CRUE-REBIUN
name: Mondragon Unibertsitatea
Publisher: name: Mondragon Unibertsitatea
Year: 2020

description: - Gailuen energia kudeatzeko aukerak: Eramangarriak. Mugikorrak
- Akatsak gailuetako baterien erabileran
- Bateriak optimizatzea
description: - Opciones de gestión de energía de los dispositivos: Portátiles. Móviles
- Errores en el uso de baterías de los dispositivos
- Optimización de baterías
title: It takes more than two for this tango: Moving beyond the self/other-binary in teaching about culture in the global EFL-classroom
Creators: name: Blell, Gabriele
name: Doff, Sabine
Publisher: name: Universitäts- und Landesbibliothek Darmstadt
Year: 2023

description: Bis dato haben Prozesse der Globalisierung und damit einhergehende (beispielsweise kulturwissenschaftliche) Theoriekonzepte nur oberflächlich Eingang in den Englischunterricht gefunden – wenn überhaupt. Dies führt dazu, dass das Lehren und Lernen über Kultur in diesem Fach häufig weder mit der einschlägigen Lebenserfahrung der Lernenden noch mit dem Wissensstand in zentralen Bezugsdisziplinen korrespondiert. In diesem Beitrag wird argumentiert, dass das Lehren und Lernen über Kultur grundlegend überdacht werden muss, um die Lücke zwischen Klassenzimmer und (Lebens-)Wirklichkeit in einer globalisierten Welt zu schließen. Aus diesem Grund wird zunächst diskutiert, wie es aus Sicht linguistischer, kultur- und literaturwissenschaftlicher Theorieperspektive gelingen kann, kulturelle Konzepte des „Anderen“ bzw. „Fremden“ konstruktiv weiter zu entwickeln. Anschließend werden Implikationen diskutiert, die sich daraus für das Lernen und Lehren über Kultur im Englischunterricht ergeben; Prozesse transkulturellen Lernens und Lehrens werden in diesem Zusammenhang definiert und kritisch analysiert. Abschließend wird ein überarbeitetes und erweitertes Modell inter- bzw. transkulturellen Lernens eingeführt und angewendet, das auf dem einflussreichen Modell interkultureller Kompetenz von Michael Byram (1997) basiert.
An extensive photometric study of the Blazhko RR Lyrae star MW Lyr: II. Changes in the physical parameters
Creators: name: Jurcsik, J.
name: Sódor, Á.
name: Szeidl, B.
name: Kolláth, Z.
name: Smith, H. A.
name: Hurta, Zs.
name: Váradi, M.
name: Henden, A.
name: Dékány, I.
name: Nagy, I.
name: Posztobányi, K.
name: Szing, A.
name: Vida, K.
name: Vityi, N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The analysis of the multicolour photometric observations of MW Lyr, a large modulation amplitude Blazhko variable, shows for the first time how the mean global physical parameters vary during the Blazhko cycle. About 1-2 percent changes in the mean radius, luminosity and surface effective temperature are detected. The mean radius and temperature changes are in good accordance with pulsation model results, which show that these parameters do indeed vary within this order of magnitude if the amplitude of the pulsation changes significantly. We interpret the phase modulation of the pulsation to be a consequence of period changes. Its magnitude corresponds exactly what one expects from the detected changes of the mean radius assuming that the pulsation constant remains the same during the modulation. Our results indicate that during the modulation the pulsation remains purely radial, and the underlying mechanism is most probably a periodic perturbation of the stellar luminosity with the modulation period.
description: 10 figures, 2 tables. Accepted for publication in MNRAS
The effect of strain on the exciton spectrum of germanium
Creators: name: Glass, Alastair Malcolm
Publisher: name: University of British Columbia
Year: 2011

description: The intensity of optical absorption, near the absorption edge in germanium, is examined as a function of strain applied to the lattice at 90 °K. The results are interpreted in terms of the change of the band structure of the lattice with applied strain. The absorption edge in unstrained germanium shows a single sharp peak due to exciton formation, whereas the edge in the strained specimens shows two exciton peaks. The peak positions vary linearly with both compressional and tensional strain up to the maximum strains applied (0.1% deformation). The exciton binding energies in the strained germanium lattice, calculated within the effective mass approximation, are approximately equal and independent of the magnitude of the strain. The separation of the peaks gives for the shear deformation potentials, the values |b| = (2.7 ± 0.3)eV/unit <100> shear and |d| = (4.7 ± 0.5)eV/unit <111> shear. The positions of the peaks give the shift of the energy gap as - (10.3 ± 1) eV/unit dilatation. Lattice imperfections are found to have no effect on the interpretation of the results. The broad absorption edge observed in evaporated films of germanium is accounted for in terms of internal strains.
Besov-Type Spaces on $R^d$ and Integrability for the Dunkl Transform
Creators: name: Abdelkefi, Chokri
name: Anker, Jean-Philippe
name: Sassi, Feriel
name: Sifi, Mohamed
Publisher: name: arXiv
Year: 2009
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: In this paper, we show the inclusion and the density of the Schwartz space in Besov-Dunkl spaces and we prove an interpolation formula for these spaces by the real method. We give another characterization for these spaces by convolution. Finally, we establish further results concerning integrability of the Dunkl transform of function in a suitable Besov-Dunkl space.
Impression of Astronomy in Persian Culture and History Inspired by Poems of Khayam: Mahdi Rokni at the OAE's 3rd Shaw-IAU Workshop
Creators: name: Rokni, Mahdi
Publisher: name: Zenodo
Year: 2021
Subjects: Astronomy Education

description: There is a huge connection between science, nature and literature with Persian culture in Iran. If you look into Iran’s history and search in many places or read Persian poems you can find a lots of astronomy knowledge. Some of Iranian great poets have been also astronomers such as Khayam or they became mystics like Attar Nishaburi. This is about stories and people who lived in different ages or lived at the same age together and they have had a huge impression on Persian culture. it can also separate science, literature and mysticism from each other.
Knaster's problem for $(Z_2)^k$-symmetric subsets of the sphere $S^{2^k-1}$
Creators: name: Karasev, R. N.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Metric Geometry (math.MG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55M20, 55M35, 55Q91

description: We prove a Knaster-type result for orbits of the group $(Z_2)^k$ in $S^{2^k-1}$, calculating the Euler class obstruction. Among the consequences are: a result about inscribing skew crosspolytopes in hypersurfaces in $\mathbb R^{2^k}$, and a result about equipartition of a measures in $\mathbb R^{2^k}$ by $(Z_2)^{k+1}$-symmetric convex fans.
title: Mehrsprachigkeit, Englisch und Literatur(unterricht)
Creators: name: Delanoy, Werner
Publisher: name: Universitäts- und Landesbibliothek Darmstadt
Year: 2023

description: Literatur kann den Erwerb mehrsprachiger Kompetenz bereichern, weil sie persönliche, kreative und reflektierte Zugänge zu Menschen und ihren Sprachen erlaubt. Dabei bietet sich das Englische aufgrund seiner Verbreitung als Brückensprache an, wenn auch seine Macht ein mehrsprachiges Programm ernsthaft behindern kann. Im folgenden Beitrag stellt sich daher eine selbstkritische Anglistik die Frage, wie sie literarisches und mehrsprachiges Lernen möglichst konstruktiv fördern kann. Dieses Vorhaben wird anhand einer bestimmten Schreibtradition veranschaulicht, die auf Walt Whitman zurückgeht und in der mehrsprachigen Literatur ihr Echo gefunden hat. Diese Tradition dient zudem als Ausgangspunkt für kreatives Schreiben im mehrsprachlichen Literaturunterricht.
ФИНАНСОВАЯ СОСТАВЛЯЮЩАЯ ЭКОНОМИЧЕСКОЙ БЕЗОПАСНОСТИ РЕГИОНОВ
Creators: name: Ульченко Михаил Васильевич
name: Пономарев Никита Владимирович
Publisher: name: Научные междисциплинарные исследования
Year: 2020
Subjects: экономическая безопасность
финансовые ресурсы
регион
economic security
financial resources
region

description: Работа посвящена изучению теоретических основ экономической безопасности и ее финансовой составляющей. В статье сделан вывод о том, что без соответствующего экономического обеспечения не могут быть реализованы и другие виды безопасности. При этом важнейшая роль в обеспечении экономической безопасности регионов отводится финансовым ресурсам.
description: The work is devoted to the study of the theoretical foundations of economic security and its financial component. The article concludes that other types of security cannot be implemented without appropriate economic support. At the same time, the most important role in ensuring the economic security of the regions is assigned to financial resources
Quasineutral limit of the electro-diffusion model arising in Electrohydrodynamics
Creators: name: Li, Fucai
Publisher: name: arXiv
Year: 2009
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B25;35B40;35Q30;76W05

description: The electro-diffusion model, which arises in electrohydrodynamics, is a coupling between the Nernst-Planck-Poisson system and the incompressible Navier-Stokes equations. For the generally smooth doping profile, the quasineutral limit (zero-Debye-length limit) is justified rigorously in Sobolev norm uniformly in time. The proof is based on the elaborate energy analysis and the key point is to establish the uniform estimates with respect to the scaled Debye length.
description: 20 pages
title: Wege zu früher Mehrsprachigkeit und interkultureller Kompetenz: Mehrsprachige Aufgabenplattformen (MAPs) für Englisch und Französisch ab Klasse 5
Creators: name: Leitzke- Ungerer, Eva
Publisher: name: Universitäts- und Landesbibliothek Darmstadt
Year: 2023

description: Wenn der Unterricht in zwei Fremdsprachen zeitgleich in Klasse 5 des Gymnasiums beginnen soll, so ist dies eine Situation, auf die die Mehrsprachigkeitsdidaktik mit ihren bisherigen Schwerpunkten nicht eingestellt ist. Deshalb wurde im Rahmen des bayerischen Schulversuchs „Französisch und Englisch ab Klasse 5“ das Konzept der MAPs (Mehrsprachige AufgabenPlattformen) entwickelt. Der Beitrag beschreibt die grundlegenden Voraussetzungen von MAPs (enge Anlehnung an die thematisch-situative, lexikalische und grammatische Progression der Lehrpläne und Lehrwerke); er zeigt außerdem, wie MAPs strukturiert sind und inwiefern sie zur Förderung der sprachlichen und interkulturellen Kompetenzen der Lernenden beitragen können, wenn sie zu einem Begleitprogramm des parallelen Spracherwerbs Englisch/Französisch der beiden ersten Lernjahre ausgebaut werden.
Mueblex AG
Creators: Christoph, Langenegger
Publisher: name: FHNW University of Applied Sciences and Arts Northwestern Switzerland
Year: 2021
Subjects: subject: Finanzmanagement
subject: Management Accounting
subject: Kostenrechnung
subject: Management by Objectives
subject: Industrie

description: Die Firma Mueblex AG stellt Bürostühle her und verkauft diese im Markt Schweiz. Der Sitz befindet sich im schweizerischen Mittelland. Das Unternehmen mit rund 20 Mitarbeitenden erwirtschaftet seit einigen Jahren eine Rentabilität, die unter dem Branchendurchschnitt liegt. Die Liquidität ist mittelfristig gesichert, erlaubt aber keine grösseren Investitionen zur Erhaltung der Unternehmenssubstanz. Familienintern konnte für den altersbedingt ausscheidenden Firmeninhaber, der zugleich während der letzten 30 Jahre Geschäftsführer war, keine Nachfolge gefunden werden. Deshalb entschloss sich der Inhaber, die Mueblex AG an die deutsche Haubas-Gruppe zu verkaufen. Die Mueblex AG soll weiterhin unter dem bisherigen Firmennamen hauptsächlich den Markt Schweiz bedienen. Vom neuen Mutterhaus wurde ein CEO ad interim beordert. Sie sind der/die neue FinanzchefIn (CFO ) der Mueblex AG.
Pair Production of small Black Holes in Heterotic String Theories
Creators: name: Bianchi, Massimo
name: Lopez, Luca
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study pair production of small BPS BH's in heterotic strings compactified on tori and in the FHSV model. After recalling the identification of small BH's in the perturbative BPS spectrum, we compute the tree-level amplitudes for processes initiated by massless vector bosons or gravitons. We then analyze the resulting cross sections in terms of energy and angular distributions. Finally, we briefly comment on scenari with large extra dimensions and on generalizations of our results to non-BPS, non-extremal and rotating BH's.
description: 33 pages
title: Rezension: Küppers, Almut; Schmidt, Torben & Walter, Maik (Hrsg.) (2011), Inszenierungen im Fremdsprachenunterricht. Grundlagen, Formen, Perspektiven.
Creators: name: Koch, Corinna
Publisher: name: Universitäts- und Landesbibliothek Darmstadt
Year: 2023

description: Der vorliegende Sammelband versteht sich als Bestandsaufnahme der aktuellen Formen von Inszenierung beim Fremdsprachenlernen und nähert sich dem Gegenstand sowohl aus theoretischer als auch aus praktisch-empirischer Perspektive.
NOTA E ANÁLISE SOBRE A ECONOMIA BRASILEIRA EM DEPRESSÃO EM PERÍODO DE PANDEMIA – COVID 19
Creators: name: Pereira Sobrinho, Raphael José Bicudo
name: Pegoraro de Araujo, Clayton Vinicius
name: Kölling, Gabrielle Jacobi
name: Moura Júnior, Álvaro Alves de
Publisher: name: Zenodo
Year: 2021

description: OBSERVATÓRIO DE POLÍTICAS PÚBLICAS, EMPREENDEDORISMO E CONJUNTURA DA USCS (CONJUSCS) Sob a Direção da Pró-Reitoria de Graduação e da Pró-Reitoria de Pós-Graduação, o Observatório é formado por professores, alunos e parceiros convidados. O Observatório tem como objetivo elaborar e publicar, periodicamente, notas técnicas no campo das Políticas Públicas, Empreendedorismo e Conjuntura. Expediente –14ª Carta de Conjuntura (outubro 2020)
description: https://www.uscs.edu.br/boletim/369
Coherent motion of stereocilia assures the concerted gating of hair-cell transduction channels
Creators: name: Kozlov, Andrei S.
name: Risler, Thomas
name: Hudspeth, A. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: Biological Physics (physics.bio-ph)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The hair cell's mechanoreceptive organelle, the hair bundle, is highly sensitive because its transduction channels open over a very narrow range of displacements. The synchronous gating of transduction channels also underlies the active hair-bundle motility that amplifies and tunes responsiveness. The extent to which the gating of independent transduction channels is coordinated depends on how tightly individual stereocilia are constrained to move as a unit. Using dual-beam interferometry in the bullfrog's sacculus, we found that thermal movements of stereocilia located as far apart as a bundle's opposite edges display high coherence and negligible phase lag. Because the mechanical degrees of freedom of stereocilia are strongly constrained, a force applied anywhere in the hair bundle deflects the structure as a unit. This feature assures the concerted gating of transduction channels that maximizes the sensitivity of mechanoelectrical transduction and enhances the hair bundle's capacity to amplify its inputs.
description: 24 pages, including 6 figures, published in 2007
Throughput of Cellular Uplink with Dynamic User Activity and Cooperative Base-Stations
Creators: name: Somekh, Oren
name: Simeone, Osvaldo
name: Poor, H. Vincent
name: Shamai, Shlomo
Publisher: name: arXiv
Year: 2009
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The throughput of a linear cellular uplink with a random number of users, different power control schemes, and cooperative base stations is considered in the large system limit where the number of cells is large for non fading Gaussian channels. The analysis is facilitated by establishing an analogy between the cellular channel per-cell throughput with joint multi-cell processing (MCP), and the rate of a deterministic inter-symbol interference (ISI) channel with flat fading. It is shown that, under certain conditions, the dynamics of cellular systems (i.e., a random number of users coupled with a given power control scheme) can be interpreted, as far as the uplink throughput is concerned, as the flat fading process of the equivalent ISI channel. The results are used to demonstrate the benefits of MCP over the conventional single cell processing approach as a function of various system parameters in the presence of random user activity.
description: To be presented at the IEEE Information Theory Workshop, Taormina, Sicily, Italy, October 2009
title: Rezension: Hübl, Veronika (2010), Wirtschaftsdeutsch als Fremdsprache für zukünftige Manager. Linguistische und pragmatische Grundlagen des Unterrichts.
Creators: name: Seyfarth, Michael
Publisher: name: Universitäts- und Landesbibliothek Darmstadt
Year: 2023

description: Betrachtet man die vorhandene Forschung sowie die auf dem Markt erschienenen Lehrmaterialien für Wirtschafts- deutsch, so wird deutlich, dass es bislang keinen zufriedenstellenden Konsens darüber gibt, was genau unter diesem Konstrukt zu verstehen ist. So bleibt für die Unterrichtspraxis bislang nur eine vage Vermutung darüber, worin die tatsächlichen Ziele bei den entsprechenden Kursen liegen. Ausgehend von ihren praktischen Erfahrungen im franzö- sischen Kontext und den dabei identifizierten Schwierigkeiten, geeignete Lehrmaterialien für ihre konkrete Ziel- gruppe zu finden, nimmt sich die Verfasserin in ihrer zur Veröffentlichung überarbeiteten Dissertation dieses Desi- derats an. Ihre Arbeit positioniert sie dabei an der Schnittstelle zwischen Linguistik, Wirtschaft und Pädagogik. Sie verfolgt ein zweifaches Ziel. Erstens sollen Strukturen von Besprechungen in verschiedenen Unternehmen anhand einer diskursanalytischen Auswertung offengelegt werden. Zweitens sollen Implikationen für die Unterrichtspraxis formuliert und diese anhand der Erarbeitung eines Unterrichtskonzepts umgesetzt werden. Dabei greift sie auch auf Kursevaluationen durch die Lernenden sowie auf Befragungen derselben zurück.
Electronic structures and Raman features of a carbon nanobud
Creators: name: He, H. Y.
name: Pan, B. C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: By employing the first-principles calculations, we investigate electronic properties of a novel carbon nanostructure called a carbon nanobud, in which a $C_{60}$ molecule covalently attaches or embeds in an armchair carbon nanotube. We find that the carbon nanobud exhibits either semiconducting or metallic behavior, depending on the size of the nanotube, as well as the combination mode. Moreover, with respect to the case of the corresponding pristine nanotubes, some new electronic states appear at 0.3-0.8 eV above the Fermi level for the carbon nanobuds with the attaching mode, which agrees well with the experimental reports. In addition, the vibrational properties of the carbon nanobuds are explored. The characteristic Raman active modes for both $C_{60}$ and the corresponding pristine nanotube present in Raman spectra of the carbon nanobuds with attaching modes, consistent with the observations of a recent experiment. In contrast, such situation does not appear for the case of the carbon nanobud with the embedding mode. This indicates that the synthesized carbon nanobuds are probably of the attaching configuration rather than the embedding configuration.
description: 5 pages, 4 figures. accepted by J. Phys. Chem. C
title: Rezension: Fandrych, Christian & Sedlaczek, Betina (2012), "I need German in my life"- Eine empirische Studie zur Sprachsituation in englischsprachigen Studiengängen in Deutschland.
Creators: name: Priegnitz, Frauke
Publisher: name: Universitäts- und Landesbibliothek Darmstadt
Year: 2023

description: Die von Christian Fandrych und Betina Sedlaczek unter der Mitarbeit von Erwin Tschirner und Beate Reinhold vorgelegte Monografie widmet sich dem Thema der Sprachensituation in internationalen Studiengängen. Diese im Zuge der Bologna-Reformen und der weiteren Internationalisierung der Hochschulen eingerichteten Studiengänge zeichnen sich dadurch aus, dass Englisch die offizielle Unterrichtssprache ist. Internationale Studierende sind hier also nicht mehr gezwungen, vor Studienbeginn die Sprache des Gastlandes auf studierfähigem Niveau zu lernen, sondern können direkt in ihr Studium einsteigen, sofern sie die entsprechenden Englischkenntnisse vorweisen können. Mit dieser sprachenpolitischen Entwicklung ist die Hoffnung verbunden, im globalen Wettbewerb (insbesondere mit englischsprachigen Konkurrenten wie den USA oder Großbritannien) mitzuhalten, ausländische Studierende an das Gastland Deutschland zu binden und sie so langfristig zu MultiplikatorInnen und/oder zu Fachkräften für den deutschen Arbeitsmarkt werden zu lassen.
title: Rezension: Assmann, Aleida (2012), Introduction to Cultural Studies. Topics, Concepts, Issues.
Creators: name: Badstübner-Kizik, Camilla
Publisher: name: Universitäts- und Landesbibliothek Darmstadt
Year: 2023

description: Der vorliegende englischsprachige Band von Aleida Assmann – Anglistin, Ägyptologin, Kulturwissenschaftlerin und eine der führenden deutschsprachigen TheoretikerInnen auf dem Gebiet der Konzeption des kulturellen Gedächtnisses – stellt eine Einführung in die Kulturwissenschaften für (deutschsprachige) Studierende der Anglistik und Amerikanistik sowie für ein einschlägig interessiertes anglophones Lesepublikum dar. Er beruht auf der dritten Auflage der deutschsprachigen Fassung von Assmanns „Einführung in die Kulturwissenschaften“ (2011), wurde im Vergleich zu dieser aber im Bereich der Bibliographie aktualisiert und um weitere englischsprachige Titel ergänzt (5). Der Band ist – in beiden Sprachen – in einer renommierten anglistischen Studien- und Fachbuchreihe erschienen, ein Zeichen dafür, dass sich die deutschsprachige Anglistik Entwicklungen und Trends in den Kulturwissenschaften sehr bewusst öffnet und Publikationen wie diese als festen Bestandteil einer einschlägigen akademischen Ausbildung begreift. Assmanns Anliegen ist zuvorderst die Anregung ihrer Leserschaft zu eigenen Fragestellungen und zu unabhängigem Denken im kulturwissenschaftlichen Kontext, sie will weder belehren oder instruieren noch enzyklopädisches Übersichtswissen an die Hand geben, vielmehr sollen aktuelle kulturelle Forschungsfelder und -themen aufgezeigt und in Verbindung mit literarischen Beispielen in ihrer Aktualität und Potenz belegt werden.
title: Die soziolinguistische Kompetenz bei DaF-Lernenden und die Rolle der Modalpartikeln
Creators: name: Lochtmann, Kai
name: De Boe, Sophie
Publisher: name: Universitäts- und Landesbibliothek Darmstadt
Year: 2023

description: Durch eine verstärkte Hinwendung zur gesprochenen Sprache im DaF-Unterricht bekommen die Modalpartikeln einen immer größeren Stellenwert (vgl. Kostrzewa & Cheon Kostrzewa 2012). Im DaF-Unterricht scheinen diese unauffälligen, für die zwischenmenschliche Kommunikation unverzichtbaren Wörter und ihre Verwendungsweise jedoch zu den am schwierigsten zu erlernenden Gegenständen überhaupt zu gehören (Möllering 2001). Sie werden von Fremdsprachenlernenden oft fehlerhaft oder gar nicht verwendet. In diesem Beitrag wird der Frage nachgegangen, ob a) flämische DaF-Lernende die deutschen Partikeln richtig benutzen können und b) wie Texte mit und ohne Modalpartikeln von diesen Lernenden bewertet werden. Es wird angenommen, dass der Erwerb der Modalpartikeln mit dem Erwerb formeller und informeller Sprachregister und somit auch mit dem Erwerb einer interkulturellen und soziolinguistischen Kompetenz zusammenhängt (vgl. Belz & Vyatkina 2005; Lochtman & Kappel 2008; Vyatkina & Belz 2006; Wierzbicka 1991).
title: Jüngere Tertiärsprachenlerner, gleiche Tertiärsprachenlehrerausbildung? Nachdenken über Anforderungen an die Ausbildung von norwegischen Fremdsprachenlehrern und -lehrerinnen für die Primarstufe (1.-7. Klasse)
Creators: name: Lindemann, Beate
Publisher: name: Universitäts- und Landesbibliothek Darmstadt
Year: 2023

description: Die Erfahrungen von Probeläufen an zahlreichen norwegischen Grundschulen (1.-7. Klasse) in den letzten Jahren deuten darauf hin, dass man den Unterricht in der 2. Fremdsprache (nach Englisch als 1. Fremdsprache ab der 1. Klasse) bereits früher als bisher in der 8. Klasse anbieten sollte. Ein solcher “Früher Start” wiederum stellt gewisse Anforderungen an die Fremdsprachenlehrerausbildung. Vor allem die typischen Bedürfnisse der jüngeren Lernenden in Sprachlernsituationen und die hohe sprachliche Kompetenz der Fremdsprachenlehrkraft müssen einen gewichtigen Platz einnehmen. Denn der frühe Unterricht in der 2. Fremdsprache trägt nicht nur dazu bei, schon früh die Sprachkenntnisse der SchülerInnen in der jeweiligen Sprache zu fördern, sondern legt auch eine wichtige Grundlage für die weitere Beschäftigung der SchülerInnen mit fremden Sprachen und Kulturen. Es bedarf deshalb einer innovativen Fremdsprachenlehrerausbildung, die diesen Bedürfnissen Rechnung trägt.
title: Fächerübergreifender Deutsch-als-Fremdspracheunterricht als Brücke zum deutschsprachigen CLIL. Praxisnahe Hinweise und Vorschläge für Lehrerbildung und Unterrichtsgestaltung mit besonderem Bezug zu (Deutschen) Schulen im Ausland
Creators: name: Wicke, Rainer E.
Publisher: name: Universitäts- und Landesbibliothek Darmstadt
Year: 2023

description: In dem folgenden Beitrag steht der fächerübergreifende Deutsch-als-Fremdspracheunterricht Kunst und Musik (DaF) als eine Variante von CLIL im Mittelpunkt der Diskussion. Da es bisher in vielen (europäischen) Ländern keine entsprechende Lehrerausbildung für die Qualifizierung von CLIL-LehrerInnen gibt bzw. entsprechende Programme (noch) nicht existieren, übernimmt der fächerübergreifende DaF-Unterricht eine Brückenfunktion in dieser Hinsicht. Es wird aufgezeigt, dass auch diese CLIL-Variante den SchülerInnen unter anderem den Erwerb einer bildungsorientierten Diskursfähigkeit erleichtert. Die Unterrichtsbeispiele zum Einsatz eines Gemäldes und eines Musikstückes verdeutlichen die Praxis des fächerübergreifenden DaFUnterrichts.
Electronic Theses and Dissertations (Renewable Resources)
Creators: Department of Renewable Resources
Publisher: name: University of Alberta Library
Year: 2023

The list of Electronic Theses and Dissertations (ETDs) in this report as well as the comma-delimited file consist of all those ETDs: Available in digital format; Where department is available in the ETD's description; Found either in ERA: Education and Research Archive (the University of Alberta Institutional Repository, operated by University of Alberta Library) or Internet Archive University of Alberta Thesis and Dissertation collection; and Submitted to the Department of Renewable Resources for the University of Alberta.

IMPORTANT NOTE: Where there is any duplication, we list the ETDs twice, and suggest the use of the Internet Archive version as it will be a higher quality scan and full-text searchable. This list is NOT comprehensive of all theses and dissertation titles originating from the Department of Renewable Resources. This list will be dynamic as the University of Alberta Library completes the digitization and description work necessary to achieve that goal. ERA staff will update this list every six months, with titles added. The most recent date for this list is December 12, 2023. Ultimately, all University of Alberta theses and dissertations will be digitized, placed into Internet Archive and made available electronically, and migrated to ERA with full description. The associated projects are connected, multi-unit, and multi-year endeavours. For more information, contact ERA Help at erahelp@ualberta.ca.
Partially quenched study of strange baryon with Nf = 2 twisted mass fermions
Creators: name: Drach, V.
name: Brinet, M.
name: Carbonell, J.
name: Liu, Z.
name: Alexandrou, C.
name: Korzec, T.
name: Koutsou, G.
name: Baron, R.
name: Guichon, P.
name: Pène, O.
name: Pallante, E.
name: Reker, S.
name: Urbach, C.
name: Jansen, K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present results on the mass of the baryon octet and decuplet using two flavors of light dynamical twisted mass fermions. The strange quark mass is fixed to its physical value from the kaon sector in a partially quenched set up. Calculations are performed for light quark masses corresponding to a pion mass in the range 270-500 MeV and lattice sizes of 2.1 fm and 2.7 fm. We check for cut-off effects and isospin breaking by evaluating the baryon masses at two different lattice spacings. We carry out a chiral extrapolation for the octet baryons and discuss results for the Omega.
description: 7 pages, 9 figures, Talk presented at The XXVI International Symposium on Lattice Field Theory, LATTICE 2008, July 14 - 19, 2008, Williamsburg, Virginia, USA
The chemistry of population III supernova ejecta: II - The nucleation of molecular clusters as a diagnostic for dust in the early universe
Creators: name: Cherchneff, Isabelle
name: dwek, Eli
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the formation of molecular precursors to dust in the ejecta of Population III supernovae using a chemical kinetic approach. Our work focuses on zero-metallicity 20 Msun and 170 Msun progenitors, and we consider fully-macroscopically mixed and unmixed ejecta. The nucleation stage for small silica, metal oxides and sulphides, pure metal, and carbon clusters is described with a new chemical reaction network. We consider the effect of the pressure dependence of critical nucleation rates, and test the impact of microscopically-mixed He+ on carbon dust formation. The unmixed ejecta of a 170 Msun progenitor supernova synthesizes ~ 5.6 Msun of small clusters, while its 20 Msun counterpart produces ~ 0.103 Msun. Our results point to smaller amounts of dust formed in the ejecta of Pop. III supernovae by a factor ~ 5 compared to values derived by previous studies, and to different dust chemical composition. Such deviations result from some erroneous assumptions made, the inappropriate use of classical nucleation theory to model dust formation, and the omission of the synthethis of molecules in supernova ejecta. Unmixed ejecta of massive Pop. III supernovae chiefly form silica and/or silicates, and pure silicon grains whereas their lower mass counterparts form a dust mixture dominated by silica and/or silicates, pure silicon and iron sulphides. Amorphous carbon can only condense in ejecta where the carbon-rich zone is deprived of He+. The first dust enrichment to the primordial gas in the early universe from Pop. III massive supernova comprises primarily pure silicon, silica and silicates. If carbon dust is present at redshift z> 6, alternative dust sources must be considered.
description: 59 pages, 12 figures, accepted for publication in ApJ
Mitigating Evaluation Bias in Question Answering Systems via Answer Normalization
Creators: name: Freed, Evan
Publisher: name: Zenodo
Year: 2025

description: We present a method for improving the evaluation of Question Answering systems by normalizing answers before evaluation. We show that this approach can lead to significant improvements in accuracy, F1 score, and Exact Match when applied to a fine-tuned RoBERTa model on the SQuAD dataset. Additionally, we propose a method for incorporating normalized answers during fine-tuning, which can further enhance model performance.
Molecular Dynamics for Low Temperature Plasma-Surface Interaction Studies
Creators: name: Graves, David B.
name: Brault, Pascal
Publisher: name: arXiv
Year: 2009
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The mechanisms of physical and chemical interactions of low temperature plasmas with surfaces can be fruitfully explored using molecular dynamics (MD) simulations. MD simulations follow the detailed motion of sets of interacting atoms through integration of atomic equations of motion, using inter-atomic potentials that can account for bond breaking and formation that result when energetic species from the plasma impact surfaces. This article summarizes the current status of the technique for various applications of low temperature plasmas to material processing technologies. The method is reviewed, and commonly used inter-atomic potentials are described. Special attention is paid to the use of MD in understanding various representative applications, including tetrahedral amorphous carbon film deposition from energetic carbon ions; the interactions of radical species with amorphous hydrogenated silicon films; silicon nano-particles in plasmas; and plasma etching.
description: Manuscript #271801, Accepted in J. Phys. D, November 10th, 2008
Biexciton ﬁne structure in monolayer transition metal dichalcogenides
Creators: name: Steinhoﬀ, Alexander
name: Florian, Matthias
name: Singh, Akshay
name: Tran, Kha
name: Kolarczik, Mirco
name: Helmrich, Sophia
name: Achtstein, Alexander W.
name: Woggon, Ulrike
name: Owschimikow, Nina
name: Jahnke, Frank
name: Li, Xiaoqin
Publisher: name: The University of Texas at Austin
Year: 2018
Subjects: Biexciton

description: The optical properties of atomically thin transition metal dichalcogenide (TMDC) semiconductors are shaped by the emergence of correlated many-body complexes due to strong Coulomb interaction. Exceptionalelectron-holeexchangepredestinesTMDCstostudyfundamentalandappliedproperties of Coulomb complexes such as valley depolarization of excitons and ﬁne-structure splitting of trions. Biexcitons in these materials are less understood and it has been established only recently that they are spectrally located between exciton and trion. Here we show that biexcitons in monolayer TMDCs exhibit a distinct ﬁne structure on the order of meV due to electron-hole exchange. Ultrafast pump-probe experiments on monolayer WSe2 reveal decisive biexciton signatures and a ﬁne structure in excellent agreement with a microscopic theory. We provide a pathway to access biexciton spectra with unprecedented accuracy, which is valuable beyond the class of TMDCs, and to understand even higher Coulomb complexes under the inﬂuence of electron-hole exchange.
title: Trends in alluvial channel geometry and streamflow : an investigation of patterns and controls
Creators: name: Slater, Louise J.
Publisher: name: University of St Andrews
Year: 2015

description: Alluvial river channels are self-formed by the sediment-laden flow that is supplied to them from upstream and the interactions between this flow and the materials forming the channel bed and banks. Thus, any changes in the volumes of solid and liquid discharge or the resistance of the boundary materials can produce adjustments in the form of river channels over time. These shifts may increase or decrease the capacity of a channel to contain flood flows. However, despite a wealth of studies on the average geometry of river channels across different scales and climatic regimes, there has not yet been a systematic assessment of the rates and controls of trends in channel form. Using a combination of USGS data, including manual field measurements and mean daily streamflow data at hundreds of stream gages, this work is the first attempt to quantify how trends in channel geometry develop over decadal timescales and how they contribute to shifts in flood hazard, in comparison with trends in streamflow. Findings reveal that two-thirds of all channel cross-sections studied exhibit significant trends in channel geometry. The majority of the investigated US river channels are eroding, with widening and deepening trends partially offset by decreases in average flow velocity. Rates of change are principally controlled by the channel size. Although large channels develop larger trends, changes are proportionally greater in small channels in percentage terms. A secondary major control is hydrology: rates of change in channel geometry are heightened by the variability and flashiness of flow regimes. Finally, results show that changing flood frequencies can only be accurately quantified when both hydrologic and geomorphic trends are accounted for, and that flood hazard is significantly increasing across the studied sites. These documented trends in channel geometry, hydraulics, and flood hazard have important implications for the management of alluvial channels, navigation, and riverside infrastructure.
Additional file 1 of Neutrophil levels upon admission for the assessment of acute pulmonary embolism with intermediate- and high-risk: an indicator of thrombosis and inflammation
Creators: name: Peng, Rui
name: Yin, Weihua
name: Wang, Fang
name: Cong, Xiangfeng
name: Lu, Bin
name: Hua, Lu
name: Chen, Xi
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine

description: Additional file1:Table S1. Regression analysis of clinical and hematologic parameters for prediction of intermediate- and high-risk APEa. Table S2. Correlation analysis of D-dimer with PESI score, RV/LV and NT-proBNP in APE patients. Table S3. Receiver operating characteristic (ROC) curve data for admission D-dimer and neutrophils for intermediate- and high-risk APE in the whole APE patient cohort.
Multimodale Texte fürs Web
Creators: Adrian, Aebi
Bruno, Frischherz
Esther, Galliker
Constanze, Jecker
Beatrix, Kossmann
HSLU Hochschule Luzern
Publisher: name: Open Education Platform for Management Schools
Year: 2019
Subjects: subject: Communication and marketing
subject: Online-Kommunikation
subject: Suchmaschinengerechtes Schreiben
subject: SEO
subject: Online Redaktion
subject: Webtexte

description: Die Publikation von Texten im Web ist mittlerweile zum Standard geworden. Dabei können Schreibstrategien von Printtexten nicht einfach auf Webtexte übertragen werden. Es gilt, kanal-, medien- und lesergerechte Schreibstrategien zu entwickeln.   Dieses Skript soll Studierende dazu befähigen die Besonderheiten des Web als Publikationskanal zu verstehen und Fachwissen medien- und kanalgerecht aufzubereiten.   Zunächst werden Grundlagen zu Websites als multimodale Texte vermittelt. Danach wird auf Informationsstrukturen eingegangen. Die Informationsarchitektur, Navigation, Links, Titel und Teaser bilden den Schwerpunkt dieses Kapitels. Der nächste Abschnitt ist einer Auswahl von unterschiedlichen Textsorten im Web gewidmet. Da Bilder im Web besonders zentral sind, stellen Bildtypen und Bildanalyse weitere Schwerpunkte dar. Textoptimierung für Suchmaschinen und Online-Konzept und Redaktion bilden die beiden theoretischen Schlusskapitel. Schliesslich runden Übungen zu den einzelnen Kapiteln das Gelernte ab.
Predictions for Flavour Observables in a RS Model with Custodial Symmetry
Creators: name: Duling, Bjoern
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In these proceedings we present the main results for particle-antiparticle mixing and rare decays in the Randall-Sundrum (RS) model with custodial symmetry. To investigate the strong bound on the Kaluza-Klein (KK) mass scale M_KK>O(20)TeV implied by the measurement of epsilon_K we perform a fine-tuning analysis on the one hand confirms the quoted bound on the KK mass scale but on the other hand reveals that consistence with experiment can still be achieved for small or moderate fine-tuning. In our analysis of rare decays of K and B mesons we find that due to the custodial symmetry the coupling of the Z boson to right handed quarks yields the dominant contribution. This feature of the model leads to distinct patterns and correlations that allow to distinguish the model from other frameworks of physics beyond the Standard Model (SM).
description: 6 pages, 6 figures, to appear in the proceedings of the Flavianet topical workshop "Low energy constraints on extensions of the Standard Model", 23-27 July 2009, Kazimierz, Poland