cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Shape and Chirality Transitions in Off-Axis Twist Nematic Elastomer Ribbons
Creators: name: Sawa, Yoshiki
name: Urayama, Kenji
name: Takigawa, Toshikazu
name: Gimenez-Pinto, Vianney
name: Mbanga, Badel L.
name: Ye, Fangfu
name: Selinger, Jonathan V.
name: Selinger, Robin L. B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using both experiments and finite element simulations, we explore the shape evolution of off-axis nematic elastomer ribbons as a function of temperature. The elastomers are prepared by cross-linking the mesogens with planar anchoring of the director at top and bottom surfaces with a 90 degree left-handed twist. Shape evolution depends sensitively on the off-axis director orientation at the sample mid-plane. When the director at midplane is parallel to either the ribbon's long or short axes, ribbons form either helicoids or spirals depending on the aspect ratio and temperature. If the director at midplane is more than 5 degrees off-axis, then they form only spiral ribbons. Samples in all these geometries show a remarkable transition from right- to left-handed chiral shapes on change of temperature. Simulation studies provide insight into the mechanisms driving shape evolution and enable engineering design of these materials for future applications.
description: 19 pages, 10 figures. YS and VG-P contributed equally to this work
"Das ist nicht in unserer Verantwortung" - Strategien zur nachhaltigen Bereitstellung lebender Systeme
Creators: name: Helling, Patrick
Publisher: name: Zenodo
Year: 2024
Subjects: Forschungsdatenmanagement
FDM
Research Data Management
RDM
lebende Systeme
Ressourcen
Nachhaltigkeit
SaxFDM Tagung 2024

description: In diesem Vortrag werden verschiedene Verantwortlichkeiten in Bezu auf den nachhaltigen Umgang mit lebenden Systemen im Detail vorstellt und für eine Orchestrierung verschiedener Stakeholder argumentiert, um auf diese Weise Restriktionen bestehender Strategien für den nachhaltigen Umgang mit lebenden Systemen zu umgehen.
Finite-action solutions of Yang-Mills equations on de Sitter dS4 and anti-de Sitter AdS4 spaces
Creators: name: Ivanova, Tatiana A.
name: Lechtenfeld, Olaf
name: Popov, Alexander D.
Publisher: name: Heidelberg : Springer Verlag
Year: 2017
Subjects: subject: Classical Theories of Gravity
subject: Confinement
subject: Differential and Algebraic Geometry
subject: Solitons Monopoles and Instantons
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We consider pure SU(2) Yang-Mills theory on four-dimensional de Sitter dS4 and anti-de Sitter AdS4 spaces and construct various solutions to the Yang-Mills equations. On de Sitter space we reduce the Yang-Mills equations via an SU(2)-equivariant ansatz to Newtonian mechanics of a particle moving in R3 under the influence of a quartic potential. Then we describe magnetic and electric-magnetic solutions, both Abelian and non-Abelian, all having finite energy and finite action. A similar reduction on anti-de Sitter space also yields Yang-Mills solutions with finite energy and action. We propose a lower bound for the action on both backgrounds. Employing another metric on AdS4, the SU(2) Yang-Mills equations are reduced to an analytic continuation of the above particle mechanics from R3 to R2,1. We discuss analytical solutions to these equations, which produce infinite-action configurations. After a Euclidean continuation of dS4 and AdS4 we also present self-dual (instanton-type) Yang-Mills solutions on these backgrounds.
Microbial nitrogen dynamics in organic and mineral soil horizons along a latitudinal transect in western Siberia
Creators: name: Wild, Birgit
name: Schnecker, Jörg
name: Knoltsch, Anna
name: Takriti, Mounir
name: Mooshammer, Maria
name: Gentsch, Norman
name: Mikutta, Robert
name: Alves, Ricardo J. Eloy
name: Gittel, Antje
name: Lashchinskiy, Nikolay
name: Richter, Andreas
Publisher: name: Washington : Amer Geophysical Union
Year: 2015
Subjects: subject: tundra
subject: permafrost
subject: boreal forest
subject: protein depolymerization
subject: arctic tundra
subject: terrestrial ecosystems
subject: carbon availability
subject: forest ecosystems
subject: alaskan tundra
subject: use efficiency
subject: plant-growth
subject: n uptake
subject: matter
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Soil N availability is constrained by the breakdown of N-containing polymers such as proteins to oligopeptides and amino acids that can be taken up by plants and microorganisms. Excess N is released from microbial cells as ammonium (N mineralization), which in turn can serve as substrate for nitrification. According to stoichiometric theory, N mineralization and nitrification are expected to increase in relation to protein depolymerization with decreasing N limitation, and thus from higher to lower latitudes and from topsoils to subsoils. To test these hypotheses, we compared gross rates of protein depolymerization, N mineralization and nitrification (determined using N-15 pool dilution assays) in organic topsoil, mineral topsoil, and mineral subsoil of seven ecosystems along a latitudinal transect in western Siberia, from tundra (67 degrees N) to steppe (54 degrees N). The investigated ecosystems differed strongly in N transformation rates, with highest protein depolymerization and N mineralization rates in middle and southern taiga. All N transformation rates decreased with soil depth following the decrease in organic matter content. Related to protein depolymerization, N mineralization and nitrification were significantly higher in mineral than in organic horizons, supporting a decrease in microbial N limitation with depth. In contrast, we did not find indications for a decrease in microbial N limitation from arctic to temperate ecosystems along the transect. Our findings thus challenge the perception of ubiquitous N limitation at high latitudes, but suggest a transition from N to C limitation of microorganisms with soil depth, even in high-latitude systems such as tundra and boreal forest.
Modellierung und Validierung einer isotropen Magnetfeldsonde
Creators: name: Messer, Marcel
Publisher: name: Aachen : Apprimus
Year: 2020
Subjects: subject: Magnetfeld
subject: Sonde
subject: Feldsonde
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Untersuchungen in der Vergangenheit zeigten, dass Messungen nahe einer inhomogenen Magnetfeldquelle zu Abweichungen von bis zu 20% (relativer Fehler) zwischen der lokalen magnetischen Flussdichte Bcenter im Zentrum der Magnetfeldsonde und dem gemessenen Mittelwert Btotal ([1], [2]). Der Autor Schlussfolgerte, dass „zum Beispiel, wenn das resultierende magnetische Feld in einem Abstand r von der Gerätschaft mit einer kombinierten relativen Standardunsicherheit von weniger als ±10% gemessen werden soll magnetische Feldsonden mit einem Abstand zu Durchmesserverhältnis r/a~3 ungeeignet sind“ ([1], [2]). Daran ist zu erkennen, dass der Radius der Spulen in der magnetischen Feldsonde einen großen Einfluss auf das gemessene magnetische Feld hat vor Allem im sehr stark inhomogenen Bereich nahe einer Störquelle. In der Regel bieten Simulationstools wie CST Microwave Studio (CST MWS) nur die Möglichkeit Feldwerte an diskreten Punkten im Raum zu berechnen. Wenn Vergleiche zwischen Messungen und Simulationen gemacht werden ist es notwendig in der Simulationssoftware die Spulenradien mit zu berücksichtigen. Dieser Artikel beschreibt wie eine isotrope magnetische Feldsonde in CST auf zwei verschiedene Weisen modelliert werden kann. Anschließend wird die Sonde für ein inhomogenes Feld validiert. Für das inhomogene Feld wurde in der vergangenen Veröffentlichung ([3]) ein falscher Drehwinkel verwendet. Die dadurch in den Ergebnissen entstandenen Abweichungen werden mit diesem Artikel richtiggestellt. Des Weiteren wird das Simulationsmodell der Sonde noch über eine EMVU-Bewertung hinsichtlich ICNIRP 1998 und 2010 validiert und damit auch ein Vergleich zwischen zwei Berechnungsverfahren für den Exposure Wert aus ICNIRP aufgezeigt.
Lycopodium alpinum
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: T.alpinum (L.) Pers. (Eriophorum alpinum L., Scirpus Trichophorum A. et G., S. hudsonianus [Michaux] Fernald, S. alpinus Dalla Torre et Sarnth.) Cat. 360. 3: M.oos bei Zermatt (Thellung); Saas-Grund (Frau Prof. Egli, Becherer, Hirschmann). - 3a: Hohlicht am Simplon (Wolf 1904 in herb. de Palezieux). - 4: Oberwald-Gletsch (P.)
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Zielführende Strategien zur Lokalisierung von Störsignalen im Wirkbereich moderner Mobilfunksysteme
Creators: name: Reinhard, Mark
name: Wuschek, Matthias
Publisher: name: Aachen : Apprimus
Year: 2016
Subjects: subject: Störsignal
subject: Zellularsystem
subject: elektromagnetisches Spektrum
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Der Schutz des elektromagnetischen Spektrums ist ein Kernelement der EMV. Er wird durch Zuteilung von Frequenzbändern und Vorgabe von Grenzwerten gewährleistet und ermöglicht so den Betrieb von Funksystemen. Trotz dieses Schutzes werden auch moderne Netze wie GSM (2G), UMTS (3G) und LTE (4G) immer wieder durch Störsignale beeinträchtigt. Diese können ihre Ursache in Emissionen von Geräten bzw. Systemen besitzen oder sie werden gar absichtlich erzeugt. Der Fokus dieser Untersuchung liegt nicht auf dem Erklären und Beseitigen von EMV-Störungen, sondern auf der Lokalisierung der Störquelle im Wirkbereich moderner Funknetze. An die Stelle einer EMVLaborUmgebung tritt hier also ein von reflektierenden Objekten geprägtes Umfeld.
title: Духовные ориентиры Л.И.Бородина
Creators: name: Еремеева, Юлия
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Делается попытка в общих чертах рассмотреть особенности художественного воплощения представлений Л.И.Бородина об истинных жизненных ценностях. В качестве материала привлекается единственный сборник стихотворений Л.И.Бородина «Изломы», а также архив писателя.
A Framework for Data Integration and Analysis in Radial-Axial Ring Rolling
Creators: name: Fahle, Simon
name: Kuhlenkötter, Bernd
Publisher: name: Hannover : publish-Ing.
Year: 2020
Subjects: subject: Machine learning
subject: Data integration
subject: Framework
subject: Radial-axial ring rolling
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Data-driven analytical approaches such as machine learning bear great potential for increasing productivity in industrial applications. The primary requirement for using those approaches is data. The challenge is to not only have any kind of data but data which has been transformed into an analytically useful form. Building upon this initial requirement, this paper presents the current state concerning data analysis and data integration in the industrial branch of hot forming, specifically focussing on radial-axial ring rolling. The state of the art is represented by the results of a data survey which was completed by six of Germany’s representing radial-axial ring rolling companies. The survey’s centre of interest focuses on how data is currently stored and analysed and how it gets depicted into eight different statements. Based on the results of the survey a framework is proposed to integrate data of the whole production process of ring rolling (furnace, punch, ring rolling machine, heat treatment and quality inspection) so that data-driven techniques can be applied to reduce form and process errors. The proposed framework takes into account that a generalized standard is hard to set because of already grown structures and a huge variety of analytical methods. Therefore, the framework focuses on data integration issues commonly found in an industrial setting as opposed to controlled research environments. The paper proposes methodologies on how to utilize the potential of each company's data. As a result, the proposed framework creates awareness for saving the data in a standardized and thoughtful manner as well as building a data-driven culture within the company.
Deriving of Sequencing Strategies for Multi-Stage Productions Supported by Logistic Models and Software Tools
Creators: name: Mütze, Alexander
name: Nyhuis, Peter
Publisher: name: Hannover : publish-Ing.
Year: 2020
Subjects: subject: Production Planning and Control
subject: Sequencing
subject: Supply Chain Configuration
subject: Software Tool
subject: Demonstrator
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Sequencing as a core task of production control has a significant influence on the logistical performance and efficiency of a single work system. Particularly in the presence of sequence dependent setup times, systematic sequencing can increase the productivity of a work system by saving them. This, however, leads to a decreasing schedule reliability of the work system, which creates an area of conflict. In recent years, mathematical models have been developed at the Institute of Production Systems and Logistics (IFA) that describe the influence of different sequencing rules on the schedule reliability and productivity of a work system. In a further step, these single so-called partial models can be linked with each other. This allows a calculation of the lateness behaviour of a multi-stage production in dependency of the sequencing rules assigned to the individual work system and thus of the overall sequencing strategy. This paper presents the possibilities of linking different logistic models in order to quantify the influence of sequencing on logistic target values as well as two software tools by which the impact and combination of various sequencing rules can be examined based on production feedback data or by means of a generic supply chain. As a result, it is possible to assess different sequence configurations of a multi-stage production and thus strategically align the production in the area of conflict between productivity and schedule reliability.
title: Civic Literacy – zur Theorie und Messbarkeit eines Kompetenzmodells für die schulische politische Bildung
title: Civic literacy—about the theory and measurability of competence in school-based civic education
titleType: AlternativeTitle
Creators: name: Alscher, Pascal
name: Ludewig, Ulrich
name: McElvany, Nele
Publisher: name: TU Dortmund
Year: 2022
Subjects: subject: Civic Literacy
subject: Kompetenzentwicklung
subject: Politische Bildung
subject: Schule
subject: Competence development
subject: Political education
subject: School
subject: 370
subject: Kompetenz
subject: Politische Bildung
subject: Schule
subject: Politische Beteiligung

description: Das Funktionieren einer Demokratie beruht nicht allein auf Institutionen und Gesetzen, sondern auch auf dem Engagement der Bürgerinnen und Bürger und der diesem Engagement zugrundeliegenden Civic Literacy. Die theoretische Kompetenzforschung in der schulischen politischen Bildung unterscheidet zwischen politischem Wissen sowie Handlungsdispositionen in den Bereichen Motivation, Einstellung und Volition. Das Zusammenwirken dieser Bereiche stellt eine Herausforderung für die empirische Kompetenzforschung dar. Nur durch das gemeinsame Messen und Interpretieren sowie das separate Auswerten dieser verschiedenen Bereiche wird eine differenzierte Betrachtung von Civic Literacy möglich. Vor diesem Hintergrund wird aufbauend auf Arbeiten aus der Politikdidaktik, Erziehungswissenschaft und Psychologie im folgenden Beitrag ein theoriebasiertes Kompetenzmodell, welches im Kern einen politischen Wissenstest und darüber hinaus Handlungsdispositionen in den Bereichen Motivation, Einstellung und Volition enthält, vorgestellt. Das Kompetenzmodell soll eine theoriebasierte, systematische Beforschung und Evaluierung von Civic Literacy bei Schülerinnen und Schülern für Forschung und Praxis ermöglichen.
description: Democratic institutions and laws are rarely sufficient to ensure the survival of democracy. Instead, democracies can only function well if embedded in a culture of democracy. Therefore, the quality and persistence of a democracy depends on the engagement and the underlying civic literacy of its citizenry. Civic education research differentiates between political knowledge and motivational, attitudinal, and volitional dispositions. By measuring all these components and carefully interpreting their interactions we obtain a more sophisticated and differentiated understanding of civic literacy in youth. Accordingly, this paper conceptualizes a theoretically and empirically justified competence model, which addresses children’s political knowledge as well as their motivational, attitudinal, and volitional dispositions. In the future, this competence model will allow for theoretically sound and systematic research on civic literacy in youth and provide valuable insights for research and practice in the field.
description: Zeitschrift für Erziehungswissenschaft;25(5)
title: Классическое искусство в свете современного эстетического опыта
Creators: name: Казин, Александр
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Рассматривается понятие «классическое искусство» в его сущностном и функциональном соотношении с понятиями «модерн» и «постмодерн». Особое внимание при этом уделяется ценностному содержанию классики, восходящему к христианскому духовному идеалу. На ряде примеров из области литературы и кино автор показывает фундаментальное значение классического художественного образа для воспроизведения реальности в её наличном бытии и в её предельном творческом преображении, выходящем далеко за границы повседневного человеческого опыта. Проблематика статьи и её методология имеют комплексный философско-эстетический и искусствоведческий характер.
title: Werner Konold/ R. Johanna Regnath (Hrsg.): Militärische Schichten der Kulturlandschaft. Landespflege – Denkmalschutz – Erinnerungskultur
Creators: name: Morrissey, Christoph
Publisher: name: University Library Heidelberg
Year: 2015

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 44, Nr. 3 (2015), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: «Мысль семейная» в комедии А.С.Грибоедова «Горе от ума»
Creators: name: Комар, Наталья
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Анализируется еще не исследованная в отечественном литературоведении проблема семьи в комедии А.С.Грибоедова «Горе от ума». «Мысль семейная» выражена на идейно-образном и сюжетном уровнях произведения. Содержание исследования составляет анализ сюжета, мотивов и центральных образов пьесы в контексте заявленной темы. В результате исследования делается вывод о том, что рассмотрение семейной проблематики помогло по-новому взглянуть на образы главных героев комедии Грибоедова «Горе от ума».
Harder, better, faster, stronger: digitalisation and employee well-being in the operations workforce
Creators: name: Lyngstadaas, Hakim
name: Berg, Terje
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Sociology
subject: FOS: Sociology
subject: Mental Health

description: Operations management is experiencing a digital transformation that affects the entire industry landscape. There has been scant research on how digitalisation affects employee well-being in the operations workforce. Using self-determination theory, we bridge this research gap by examining how basic psychological needs among the operations workforce are affected by digitalisation. Our empirical data is collected by a survey from 132 employees in the operations job function in the U.S. The empirical evidence is analysed in a configurational manner by using a fuzzy set Qualitative Comparative Analysis. Our findings suggest there are five empirical important empirical solutions for explaining the presence of employee well-being, as well as four important empirical solutions for the absence (negation) of employee well-being. Our configurational solution consists mostly of both digital competence, social relatedness, and digital autonomy. This is in accordance with the self-determination theory. However, there are several alterations to how important they are among different configurational solutions. The presence of well-being in life and psychological well-being seems less relevant for obtaining well-being at work. We discuss the theoretical and practical implications of our findings and provide recommendations to managers for how to promote employee well-being.
title: Пушкин о царях и царе
Creators: name: Лепахин, Валерий
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: По-новому ставится проблема отношения Пушкина к монархии и конкретно к царю Петру I. Подробно анализируются такие произведения, как ода «Вольность», поэмы «Полтава» и «Медный всадник».
Einfluss parasitärer Effekte einer Rahmenantenne bei Magnetfeldmessungen unter 30 MHz
Creators: name: Rogowski, Maik
name: Garbe, Heyno
Publisher: name: Aachen : Apprimus
Year: 2020
Subjects: subject: Magnetfeld
subject: Antenne
subject: Störfestigkeit
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Normgerechte Störaussendungs- und Störfestigkeitsmessungen im Frequenzbereich zwischen 9 kHz bis 30 MHz stellen noch immer eine große Herausforderung an die Messtechnik dar. Einer der Hauptgründe hierfür ist der Abstand zwischen dem Messobjekt und der Antenne, da dieser wesentlich kleiner ist als die Wellenlänge der jeweils betrachteten Frequenz in diesem Frequenzbereich. Laut CISPR-Normen [1], [2] und [3] werden in diesem Frequenzbereich Magnetfeldantennen verwendet und die Messungen in einer definierten Messumgebung, wie Absorberhallen oder Freifeldmessplätze durchgeführt. Zur Validierung dieser EMV-Messplätze für die Messung von Störaussendung und Störfestigkeit eines Messobjektes hatte Trautnitz et al. [4] einen Round-Robin-Test in unterschiedlichen Absorberhallen und Freifeldmessplätzen durchgeführt. Jedoch gibt es kaum Untersuchungen zum Einfluss des realen Bodens (Groundplane) der Messplätze auf das Messergebnis. Aus diesem Grund wurde in vorangegangenen Arbeiten dieser Einfluss der Groundplane mithilfe von unterschiedlichen numerischen Feldberechnungsprogrammen untersucht ([5] und [6]). In diesen Arbeiten wurde der Frequenzbereich von 1 kHz bis 1 MHz festgelegt, da in diesem Bereich der größte Einfluss vermutet wurde Die Ergebnisse aus den Simulationen wurden anschließend mit den Messergebnissen aus dem Round-Robin-Test verglichen. Als numerische Feldberechnungsprogramme wurden FEKO [7], CST [8] und Concept II [9] verwendet. In dieser Arbeit werden weiterführende Untersuchungen vorgestellt. Hierbei wird der Frequenzbereich von 9 kHz bis 30 MHz erweitert, mit Hilfe der numerischen Feldprogramme simuliert und mit den Messergebnissen aus dem Round-Robin-Test [4] verglichen. Die daraus resultierenden Erkenntnisse aus dem Vergleich sowie der charakteristische Verlauf der realen Messdaten legen die Vermutung nahe, dass die Eigenschaften der Rahmenantenne einen Einfluss auf die Messergebnisse haben. Aus diesem Grund werden in dieser Arbeit weiterhin die parasitären Effekte einer Rahmenantenne untersucht. Speziell im Fokus liegt der Einfluss der Induktion der Leiterschleife und der parasitären Kapazität, welche sich zwischen den einzelnen Windungen des Drahtes und der Rahmenantenne selbst bilden. Mithilfe eines numerischen Feldberechnungsprogrammes (Concept II) wird eine Rahmenantenne modelliert und die Anzahl an Windungen der Antenne variiert. Zur Validierung der Simulationsergebnisse wird ein Ersatzschaltbild der Rahmenantenne in ein numerisches Schaltungssimulationsprogramm modelliert und die Ergebnisse mit den Simulationsprogrammen verglichen.
title: Память и слово в романе В.Шарова «Возвращение в Египет»
Creators: name: Лю, Сюй
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: В романе Владимира Шарова «Возвращение в Египет» рассказывается о судьбе семьи Гоголей в сложном контексте русской истории XX века. Роман охватывает широкий спектр исторических, культурных и религиозных традиций. В данной статье предпринята попытка проанализировать три аспекта — Слово, текст и образ человека с точки зрения памяти и Слова, чтобы представить полный анализ содержания и поэтические особенности романа.
A numerical study of stretched smectic-A elastomer sheets
Creators: name: Brown, Andrew W.
name: Adams, James M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present a numerical study of stretching monodomain smectic-A elastomer sheets, computed using the finite element method. When stretched parallel to the layer normal the microscopic layers in smectic elastomers are unstable to a transition to a buckled state. We account for the layer buckling by replacing the microscopic energy with a coarse grained effective free energy that accounts for the fine scale deformation of the layers. We augment this model with a term to describe the energy of deforming buckled layers, which is necessary to reproduce the experimentally observed Poisson's ratios post-buckling. We examine the spatial distribution of the microstructure phases for various stretching angles relative to the layer normal, and for different length-to-width aspect ratios. When stretching parallel to the layer normal the majority of the sample forms a bi-directionally buckled microstructure, except at the clamps where uni-directional microstructure is predicted. When stretching at small inclinations to the layer normal the phase of the sample is sensitive to the aspect ratio of the sample, with the bi-directionally buckled phase persistent to large angles only for small aspect ratios. We relate these theoretical results to experiments on smectic-A elastomers.
description: 14 pages, 17 figures
EMMA 2 - a MAGE-compliant system for the collaborative analysis and integration of microarray data
Creators: name: Dondrup, Michael
name: Albaum, Stefan P.
name: Griebel, Thasso
name: Henckel, Kolja
name: Junemann, Sebastian
name: Kahlke, Tim
name: Kleindt, Christiane K.
name: Küster, Helge
name: Linke, Burkhard
name: Mertens, Dominik
name: Mittard-Runte, Virginie
name: Neuweger, Heiko
name: Runte, Kai J.
name: Tauch, Andreas
name: Tille, Felix
name: Pühler, Alfred
name: Goesmann, Alexander
Publisher: name: London : Biomed Central Ltd
Year: 2009
Subjects: subject: Molecular Biotechnology
subject: Genome Research
subject: MAGE-ML
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Background: Understanding transcriptional regulation by genome-wide microarray studies can contribute to unravel complex relationships between genes. Attempts to standardize the annotation of microarray data include the Minimum Information About a Microarray Experiment (MIAME) recommendations, the MAGE-ML format for data interchange, and the use of controlled vocabularies or ontologies. The existing software systems for microarray data analysis implement the mentioned standards only partially and are often hard to use and extend. Integration of genomic annotation data and other sources of external knowledge using open standards is therefore a key requirement for future integrated analysis systems. Results: The EMMA 2 software has been designed to resolve shortcomings with respect to full MAGE-ML and ontology support and makes use of modern data integration techniques. We present a software system that features comprehensive data analysis functions for spotted arrays, and for the most common synthesized oligo arrays such as Agilent, Affymetrix and NimbleGen. The system is based on the full MAGE object model. Analysis functionality is based on R and Bioconductor packages and can make use of a compute cluster for distributed services. Conclusion: Our model-driven approach for automatically implementing a full MAGE object model provides high flexibility and compatibility. Data integration via SOAP-based web-services is advantageous in a distributed client-server environment as the collaborative analysis of microarray data is gaining more and more relevance in international research consortia. The adequacy of the EMMA 2 software design and implementation has been proven by its application in many distributed functional genomics projects. Its scalability makes the current architecture suited for extensions towards future transcriptomics methods based on high-throughput sequencing approaches which have much higher computational requirements than microarrays.
Emerging Materials for Interfacial Solar‐Driven Water Purification
Creators: name: Cao, Sijia
name: Thomas, Arne
name: Li, Changxia
Publisher: name: Technische Universität Berlin
Year: 2023
Subjects: subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften
subject: covalent organic frameworks
subject: desalination
subject: metal-organic frameworks
subject: polymers
subject: solar-driven water purification

description: Solar‐driven water purification is considered as an effective and sustainable technology for water treatment using green solar energy. One major goal for practical applications is to improve the solar evaporation performance by the design of novel photothermal materials, with optimized heat localization and water transport pathways to achieve reduced energy consumption for water vaporization. Recently, some emerging materials like polymers, metal‐organic frameworks (MOFs), covalent organic frameworks (COFs) and also single molecules were employed to construct novel solar evaporation systems. In this minireview, we present an overview of the recent efforts on materials development for water purification systems. The state‐of‐the‐art applications of these emerging materials for solar‐driven water treatment, including desalination, wastewater purification, sterilization and energy production, are also summarized.
title: BfR2GO - Ausgabe 1/2023: Schwerpunkt "Futtermittel - Vom Trog zum Teller"
Creators: name: Bundesinstitut Für Risikobewertung
Publisher: name: Bundesinstitut für Risikobewertung
Year: 2023
Subjects: subject: 500

description: Wissenschaftsmagazin, vol. 1, 2023
A Forgetting-based Approach to Merging Knowledge Bases
Creators: name: Xu, Dai
name: Zhang, Xiaowang
name: Lin, Zuoquan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: 03Cxx

description: This paper presents a novel approach based on variable forgetting, which is a useful tool in resolving contradictory by filtering some given variables, to merging multiple knowledge bases. This paper first builds a relationship between belief merging and variable forgetting by using dilation. Variable forgetting is applied to capture belief merging operation. Finally, some new merging operators are developed by modifying candidate variables to amend the shortage of traditional merging operators. Different from model selection of traditional merging operators, as an alternative approach, variable selection in those new operators could provide intuitive information about an atom variable among whole knowledge bases.
description: 5 pages
title: Quasi-minimal Abelian groups
Creators: name: Goldsmith , Brendan
name: O'Hogain, S
name: Wallutis, S
Publisher: name: Technological University of Dublin
Year: 2004

description: An abelian group $G$ is said to be quasi-minimal (purely quasi-minimal, directly quasi-minimal) if it is isomorphic to all its subgroups (pure subgroups, direct summands, respectively) of the same cardinality as $G$. Obviously quasi-minimality implies pure quasi-minimality which in turn implies direct quasi-minimality, but we show that neither converse implication holds. We obtain a complete characterisation of quasi-minimal groups. In the purely quasi-minimal case, assuming GCH, a complete characterisation is also established. An independence result is proved for directly quasi-minimal groups.
PT deformation of angular Calogero models
Creators: name: Correa, Francisco
name: Lechtenfeld, Olaf
Publisher: name: Heidelberg : Springer Verlag
Year: 2017
Subjects: subject: Conformal and W Symmetry
subject: Discrete Symmetries
subject: Field Theories in Lower Dimensions
subject: Integrable Field Theories
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The rational Calogero model based on an arbitrary rank-n Coxeter root system is spherically reduced to a superintegrable angular model of a particle moving on S n−1 subject to a very particular potential singular at the reflection hyperplanes. It is outlined how to find conserved charges and to construct intertwining operators. We deform these models in a PT-symmetric manner by judicious complex coordinate transformations, which render the potential less singular. The PT deformation does not change the energy eigenvalues but in some cases adds a previously unphysical tower of states. For integral couplings the new and old energy levels coincide, which roughly doubles the previous degeneracy and allows for a conserved nonlinear supersymmetry charge. We present the details for the generic rank-two (A 2, G 2) and all rank-three Coxeter systems (AD 3, BC 3 and H 3), including a reducible case (A 1 ⊗ 3 ).
Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia
Creators: name: Schnecker, Jörg
name: Wild, Birgit
name: Takriti, Mounir
name: Alves, Ricardo J. Eloy
name: Gentsch, Norman
name: Gittel, Antje
name: Hofer, Angelika
name: Klaus, Karoline
name: Knoltsch, Anna
name: Lashchinskiy, Nikolay
name: Mikutta, Robert
name: Richter, Andreas
Publisher: name: Oxford : Pergamon-Elsevier Science Ltd
Year: 2015
Subjects: subject: extracellular enzymes
subject: plfa
subject: tundra
subject: boreal forests
subject: steppe
subject: permafrost
subject: soil organic-matter
subject: mycorrhizal fungi
subject: forest soils
subject: decomposition
subject: nitrogen
subject: carbon
subject: dynamics
subject: litter
subject: depth
subject: ectomycorrhizal
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Soil horizons below 30 cm depth contain about 60% of the organic carbon stored in soils. Although insight into the physical and chemical stabilization of soil organic matter (SUM) and into microbial community composition in these horizons is being gained, information on microbial functions of subsoil microbial communities and on associated microbially-mediated processes remains sparse. To identify possible controls on enzyme patterns, we correlated enzyme patterns with biotic and abiotic soil parameters, as well as with microbial community composition, estimated using phospholipid fatty acid profiles. Enzyme patterns (i.e. distance-matrixes calculated from these enzyme activities) were calculated from the activities of six extracellular enzymes (cellobiohydrolase, leucine-amino-peptidase, N-acetylglucosaminidase, chitotriosidase, phosphatase and phenoloxidase), which had been measured in soil samples from organic topsoil horizons, mineral topsoil horizons, and mineral subsoil horizons from seven ecosystems along a 1500 km latitudinal transect in Western Siberia. We found that hydrolytic enzyme activities decreased rapidly with depth, whereas oxidative enzyme activities in mineral horizons were as high as, or higher than in organic topsoil horizons. Enzyme patterns varied more strongly between ecosystems in mineral subsoil horizons than in organic topsoils. The enzyme patterns in topsoil horizons were correlated with SUM content (i.e., C and N content) and microbial community composition. In contrast, the enzyme patterns in mineral subsoil horizons were related to water content, soil pH and microbial community composition. The lack of correlation between enzyme patterns and SUM quantity in the mineral subsoils suggests that SOM chemistry, spatial separation or physical stabilization of SUM rather than SUM content might determine substrate availability for enzymatic breakdown. The correlation of microbial community composition and enzyme patterns in all horizons, suggests that microbial community composition shapes enzyme patterns and might act as a modifier for the usual dependency of decomposition rates on SUM content or C/N ratios.
Influence of the field-detector coupling strength on the dynamical Casimir effect
Creators: name: de Castro, A. S. M.
name: Cacheffo, A.
name: Dodonov, V. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the problem of photon creation from vacuum inside an ideal cavity with vibrating walls in the resonance case, taking into account the interaction between the resonant field mode and a detector modeled by a quantum harmonic oscillator. The frequency of wall vibrations is taken to be twice the cavity normal frequency, modified due to the coupling with the detector. The dynamical equations are solved with the aid of the multiple scales method. Analytical expressions are obtained for the photon mean numbers and their variances for the field and detector modes, which are supposed to be initially in the vacuum quantum states. We analyze different regimes of excitation, depending on the ratio of the modulation depth of the time-dependent cavity eigenfrequency to the coupling strength between the cavity mode and detector. We show that statistical properties of the detector quantum state (variances of the photon numbers, photon distribution function, and the degree of quadrature squeezing) can be quite different from that of the field mode. Besides, the mean number of quanta in the detector mode increases with some time delay, compared with the field mode.
GEM applications outside high energy physics
Creators: name: Pinto, Serge Duarte
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: From its invention in 1997, the Gas Electron Multiplier has been applied in nuclear and high energy physics experiments. Over time however, other applications have also exploited the favorable properties of GEMs. The use of GEMs in these applications will be explained in principle and practice. This paper reviews applications in research, beam instrumentation and homeland security. The detectors described measure neutral radiations such as photons, x-rays, gamma rays and neutrons, as well as all kinds of charged radiation. This paper provides an overview of the still expanding range of possibilities of this versatile detector concept.
description: Part of a special edition of Modern Physics Letters A, dedicated to micropattern gaseous detectors
title: Заметки о противостоянии народа и интеллигенции первых советских лет в наследии М.Горького и В.Вересаева
Creators: name: Новичкова, Дарья
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Представлены наблюдения над родственными заметками и обобщениями В.В.Вересаева и М.Горького относительно реалий революционного времени (1917—1921). Прослеживается, с опорой на публицистические и прозаические произведения писателей, как каждый из авторов запечатлел грани бытовой, общественной, культурной и духовной жизни русского народа. Помимо исторического контекста привлекается биографический — факты личностного и творческого взаимодействия двух художников друг с другом и современными для той эпохи литераторами.
Trichophorum pumilum Schinz et Thell.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: T. pumilum (Vahl) Schinz et Thell. (T. atrichum Palla, T. oliganthum [C. A. Meyer] Fritsch, S.pumilus Vahl, S.alpinus Schleicher,5'.atrichus Dalla Torre et Sarnth.) Cat. 360 und 432. Wohl nur Vispertäler. Die FAVREsche Angabe aus dem Gebiet des Sirwoltensees (Simplon) ist fraglich. Ich konnte die Art dort nicht finden. Im Herbar FAVRE (E. T. H. Zürich) ist die Art vom Sirwoltensee nicht belegt. Die zwei einzigen, von FAVRE gesammelten Belege im dortigen Herbar (Herkunft: Fletschhorn) gehören nach Prof.KOCH (briefl. 23. 10. 1952) zu T. caespitosum. Die Angabe <Furka» hat noch JACCARDselber widerrufen. Die Art besiedelt sandige Gletscherbachalluvionen, auch feuchte, besonders etwas sandige Weidestellen.DieAngabeim Cat.: «lieuxrocheuxhumides» trifft nichtdasRichtige.Auch dürftehier2800 m als obere Grenze etwas zu hoch angegeben sein. 3: Neuere Beobachtungenbei Zermatt: Winkelmatten, 1685m, Moos, 1700m, Staffelwald,2100m, Trifttal, 2310m (alles: Thellung 1922), Stellisse, 2536m (Braun-Blanquet 1919, Thellung 1922); Saastal: Grund (Lüdi 1950), oberhalb Bodmen, 1580 m (Becherer und Thommen 1940), Zer- meiggern (A. Keller), untere Schöpfen und Galenalp bei Fee (Hirschmann).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
A Grid of 3D Stellar Atmosphere Models of Solar Metallicity: I. General Properties, Granulation and Atmospheric Expansion
Creators: name: Trampedach, Regner
name: Asplund, Martin
name: Collet, Remo
name: Nordlund, Åke
name: Stein, Robert F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Present grids of stellar atmosphere models are the workhorses in interpreting stellar observations, and determining their fundamental parameters. These models rely on greatly simplified models of convection, however, lending less predictive power to such models of late type stars. We present a grid of improved and more reliable stellar atmosphere models of late type stars, based on deep, 3D, convective, stellar atmosphere simulations. This grid is to be used in general for interpreting observations, and improve stellar and asteroseismic modeling. We solve the Navier Stokes equations in 3D and concurrent with the radiative transfer equation, for a range of atmospheric parameters, covering most of stellar evolution with convection at the surface. We emphasize use of the best available atomic physics for quantitative predictions and comparisons with observations. We present granulation size, convective expansion of the acoustic cavity, asymptotic adiabat, as function of atmospheric parameters. These and other results are also available in electronic form.
description: 16 pages, 12 figures. Accepted for publication in ApJ, 2013
title: Самодержавное начало в древнерусской словесности
Creators: name: Моторин, Александр
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Представления о самодержавии рассматриваются в статье как важное начало русской художественной историософии. В изображении древнерусских книжников самодержавная государственная власть соединяется с духовной церковной властью, составляя характерную для Православия симфонию властей. Словесные образы верховной власти являют коренные черты народного характера: духовную любовь к Богу и людям, смирение, милосердие, твердость веры, почитание власти как богоданной (при условии ее православного направления). Самодержавное начало развивается в русской словесности от эпохи Крещения Руси до настоящего времени.
Magnetotransport in anisotropic Pb films and monolayers
Creators: name: Lükermann, Daniel
name: Gauch, M.
name: Czubanowski, Marcin
name: Pfnür, Herbert
name: Tegenkamp, Christoph
Publisher: name: College Park, MD : American Physical Society
Year: 2010
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The anisotropy induced by atomic steps of a Si(557) substrate in structure and magnetoconductance of ultrathin Pb films adsorbed on this surface is shown to be effectively shielded as a function of layer thickness, as found out by a combined study of low-energy electron diffraction and macroscopic four-point conductivity measurements as a function of Pb coverage, temperature, and magnetic field. In strong contrast to flat Si(111), substrate steps effectively compensate the lateral misfit (10%), leading to crystalline growth starting from the first monolayer. Multilayers already exceeding four physical monolayers (PML) form isotropic and percolated Pb islands even on this uniaxial surface. This structural anisotropy corresponds well to that found in dc conductivity measurements. As a function of temperature, strong localization effects with clear anisotropy become dominant for coverages below 4 PML. Strong anisotropic magnetotransport was found for Pb-wetting layers close to completion of the physical monolayer caused by an enhanced elastic scattering rate in the direction perpendicular to the step direction. While multilayers are characterized by weak localization, antilocalization is found for all monolayer structures due to strong spin-orbit coupling, which is effectively switched off around 1.3 ML (1 PML) below 78 K, where one-dimensional transport was seen along the step direction. © 2010 The American Physical Society.