cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: The Information Procurement and Publishing Behaviour of Researchers in the Natural Sciences and Engineering
Creators: name: Einbock, Joanna
name: Dreyer, Britta
name: Heller, Lambert
name: Kraft, Angelina
name: Niemeyer, Sandra
name: Plank, Margret
name: Schrenk, Philip
name: Sens, Irina
name: Struß, Julia Maria
name: Tullney, Marco
Publisher: name: German National Library of Science and Technology
Year: 2017

description: Commissioned by the Technische Informationsbibliothek (TIB) – German
National Library of Science and Technology, Leibniz Information Centre for
Science and Technology, engage AG conducted a quantitative online survey on the
topic of information procurement and publishing behaviour among researchers in
the natural sciences and engineering between the end of 2016 and the beginning
of 2017. More than 1,400 researchers from German higher education institutions
(HEIs) and non-university research institutions provided insight into their
research activities and expressed their opinions.
The aim of the study was to gain a more accurate and varied picture of potential
library users and their information procurement and publishing behaviour. The
survey focused on the use, production and handling of non-textual material such
as audiovisual media, 3D objects and research data, which have so far been little
studied in the library context.
The questionnaire used in the survey contained closed questions, addressing
issues relating to the use of search tools and to modes of access in information
procurement as well as to the production and publication of various scientific
contributions and material. A number of questions were aimed at determining the
need for advice on matters such as Open Access publications, the use of
repositories and the allocation of Digital Object Identifiers (DOI) for non-textual
material. As such, the study sheds light on the user behaviour of researchers as
well as their potential need for new services and user-centred advisory services.
The People’s Choice: Transcultural Collectivity and the Art of Shared Knowledge Production
Creators: name: Schramm, Samantha
Publisher: name: Transcultural Studies
Year: 2015
Subjects: Group Material; Art space; exhibitions; Transculturality; Knowledge production;alternative exhibition spaces; participation; collectivity;

description: This article analyses the exhibition The People’s Choice (Arroz con Mango), which was curated by the artistic collective Group Material and on view in New York City in 1981. The project is of peculiar relevance with regard to questions of transcultural knowledge production, because the artists asked the predominantly Spanish-speaking residents of the neighborhood where the exhibition space was located to participate by selecting their own personal objects or artworks for the show. However, this inclusion of personal objects created tension as well, mainly because the artistic collective defined the concept of the exhibition in advance by suggesting a specific choice of objects, and also because the idea of a democratic empowerment of the public ultimately remains problematic. This further raises the question of how the shift from personal object to something viewed in an exhibition also leads to a transformation of the agency of the displayed objects as well. The article contextualizes the exhibition The People’s Choice (Arroz con Mango), exploring notions of collectivity and participatory art in an alternative space that seems to creatively oppose the mainstream of larger established institutional spaces in New York. Finally, it shows how the circulation and transformation of the exhibited objects bear the intrinsic possibility to shape forms of transcultural collectivity when they act as mediators in processes of transcultural knowledge production.
description: Transcultural Studies, No 2 (2015)
First-principles study of the structural stability of Mn3Z (Z=Ga, Sn and Ge) Heusler compounds
Creators: name: Zhang, Delin
name: Yan, Binghai
name: Wu, Shu-Chun
name: Kübler, Jürgen
name: Kreiner, Guido
name: Parkin, Stuart S. P.
name: Felser, Claudia
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the structural stability and magnetic properties of cubic, tetragonal and hexagonal phases of Mn3Z (Z=Ga, Sn and Ge) Heusler compounds using first-principles density-functional theory. We propose that the cubic phase plays an important role as an intermediate state in the phase transition from the hexagonal to the tetragonal phases. Consequently, Mn3Ga and Mn3Ge behave differently from Mn3Sn, because the relative energies of the cubic and hexagonal phases are different. This result agrees with experimental observations from these three compounds. The weak ferromagnetism of the hexagonal phase and the perpendicular magnetocrystalline anisotropy of the tetragonal phase obtained in our calculations are also consistent with experiment.
description: 12 pages, 3 figures and 2 tables
title: Archäologische Informationen, Bd. 2-3 (1973-1974): Archäologische Informationen
Creators: name: DGUF E.V.
Publisher: name: University Library Heidelberg
Year: 2016

description: Mitteilungen zur Ur- und Frühgeschichte
description: Mitteilungen zur Ur- und Frühgeschichte
description: Titel
 Inhalt
 Weinberghöhlen (Mauern) und Speckberg (Meilenhofen) 1964-1972...29-36
 Ausgrabungen einer jungpaläolithischen Freilandstation bei Lommersum, Kreis Euskirchen (Nordrhein-Westfalen)...37-40
 Ausgrabung eines spätpaläolithischen Rastplatzes in der Spitzbubenhöhle, Gem. Herbrechtingen-Eselsburg, Kreis Heidenheim (Baden-Württemberg)...55-58
 Neue Forschungen zur Chronologie von Spätpaläolithikum und Mesolithikum in Süddeutschland...59-66
 Ein mesolithisches Doppelgrab aus dem unteren Altmühltal (Landkreis Kelheim, Bayern). Vorbericht...67-70
 Neolithische Mikrolithen und andere Silexartefakte aus Süddeutschland und Österreich...71-125
 Zur Deutung der sogenannten Mithrassymbolen...143-152
 Der Bernstein und seine Bedeutung in der Ur- und Frühgeschichte...153
 Die latènezeitliche Funde des Christenberges bei Münchhausen, Kreis Marburg/Lahn. Untersuchungen zur Keramik eisenzeitlicher Höhensiedlungen in Nordhessen...157-159
 Zur Frage der jungbronzezeitlichen Depotfunde in Mitteldeutschland...161
 K. W. Butzer: Environment and Archeology. An Ecological Approach to Prehistory. London 1972...163-166
 R. Newel u. A. P. J. Vroomas: Automatic Artifact registration and Systems for archaeological analysis with the Philips P 1100 Computer: A Mesolithic Test-Case. Oosterhout 1972...166-171
 Jindřich Štelcl, Jaroslav Malina: Anwendung der Petrographie in der Archäologie. Brünn 1970...182-183
 Oswald Böhme (1914 - 1973)...203
 Aus den Bundesländern...210-215
 Museen: Biskupin, ein Freilichtmuseum in Polen...208-209
 Personalia...206-208
title: Jindřich Štelcl, Jaroslav Malina: Anwendung der Petrographie in der Archäologie. Brünn 1970
Creators: name: Rottländer, Rolf C. A.
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezenzion zu: Jindřich Štelcl, Jaroslav Malina: Anwendung der Petrographie in der Archäologie. Brünn 1970. 112 Seiten, 43 Tafeln, 10 Abb., 9 Tabellen. Zusammenfassung in Russisch, Englisch und Französisch.
Transiente Druckfelder in zweiphasigen Strömungen
Creators: name: Maksic, Senada
Publisher: name: Hannover : Universität
Year: 2003
Subjects: subject: Transient pressure fields
subject: numerical calculation
subject: thermodynamical non-equilibrium
subject: pipe break
subject: flashing flow
subject: direct contact condensation
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
Applicability of Advanced Manufacturing Technologies for Agile Product Development in the Internet of Production: A Strategic Framework
Creators: name: Kelbel, Hannah Carlotta
name: Stoecker, Lena
name: Frank, Julius Johannes
name: Lukas, Gerret
name: Bergweiler, Georg
name: Gries, Thomas
name: Greb, Christoph
name: Schuh, Günther
Publisher: name: Hannover : publish-Ing.
Year: 2022
Subjects: subject: Advanced Manufacturing Technology
subject: Product Development
subject: Agile Prototyping
subject: Internet of Production
subject: Technology Assessment
subject: Dewey Decimal Classification::600 | Technik

description: Evolving product complexities and customer demands in an increasingly unstable environment are challenging companies worldwide. Agile product development can help to overcome these challenges but originates in software development. It is argued whether it is completely transferable towards the build-up of physical products. This paper aims to support agile product development for physical products by classifying appropriate advanced manufacturing technologies (AMTs) and identifying their demand for further research and development. A framework - the agile readiness level (ARL) for AMTs - is derived. It is consisting of five main factors of agile product development: testing & self-improvement, distribution & availability, accessibility for non-experts, time from idea to product, and overall flexibility. The ARL is evaluated for eight AMTs which are developed within the research cluster “Internet of Production” (IoP) at RWTH Aachen University. It is found that the ARL helps to identify similarities of diverse AMTs as well as research directions that need to be taken. It therefore contributes to the transfer of agile development methodologies from software to hardware products with the use of AMTs. Differences in technological feasibility for agile prototyping arise due to safety and complexity, targeted user group, and varying demands for support by artificial intelligence (AI) solutions.
title: Friedrich Schlette: Evolution und Revolution im alten Orient und in europa. Das Neolithikum als historische Erscheinung. Berlin 1971
Creators: name: Albrecht, Gerd
name: Schröter, Peter
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Friedrich Schlette (Hrsg.), Evolution und Revolution im alten Orient und in europa. Das Neolithikum als historische Erscheinung. Akademie-Verlag Berlin 1971. 171 Seiten, 20 Tafeln, zahlreiche Textabbildungen. Mit Beiträgen von H. BEHRENS, B. Brentjes, B. Gramsch, A. Häusler, N. Kalicz, H.-H. Müller, I. Nilius, J. Preuss, H. Quitta und F. Schlette
Messung und Simulation der Eigenresonanzen durch Mehrfachreflexionen in einem Leitungsnetzwerk im Frequenz- und Zeitbereich
Creators: name: Magdowski, Mathias
name: Markgraf, Peter
name: Schulz, Philip
Publisher: name: Aachen : Apprimus
Year: 2022
Subjects: subject: EMV
subject: Verträglichkeit
subject: Elektromagnetik
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: Feldbusse aus dem Automobilbereich wie CAN, EtherCAT, LIN oder FlexRay können die Busteilnehmer bzw. Steuergeräte in verschiedenen Verkabelungstopologien wie Bus, Ring, Stern oder Baum miteinander verbinden [4]. Verschiedene Topologien benötigen abweichende Kabellängen und bieten unterschiedliche Ausfallsicherheit oder Erweiterbarkeit. Auch die maximal erreichbare Übertragungsrate bzw. das EMV-Verhalten des Feldbusses wird durch die Topologie bestimmt, da eventuelle Mehrfachreflexionen durch fehlangepasste Leitungsenden und Knotenpunkte zu unerwünschten Signalüberlagerungen führen. Im Zeitbereich äußerst sich das durch ein Einschwingverhalten mit gedämpften Schwingungen und entsprechenden Zeitkonstanten. Im Frequenzbereich weisen solche fehlangepassten Leitungsnetzwerke scharfe Resonanzstellen mit geringer Bandbreite und entsprechend hoher Güte auf. Zur experimentellen Untersuchung solcher Feldbusnetze bieten sich im Frequenzbereich Impedanzanalysatoren [3] an, mit denen die frequenzabhängige komplexe Eingangsimpedanz an den Leitungsenden bzw. an Knotenpunkten gemessen und auf Resonanzstellen bzw. Extremwerte des Betrags oder schnelle Phasenänderungen untersucht werden kann. Für transiente Untersuchungen lassen sich Oszilloskope [5] nutzen, um z. B. das Einschwingverhalten bzw. die Sprungantwort nach einer Schaltflanke zu messen. Als Anregung können einfache Signalgeneratoren zur Erzeugung von Rechteckpulsfolgen bzw. Taktsignalen genutzt werden. In diesem Beitrag werden entsprechende Messergebnisse für ein konkretes Beispielnetzwerk aus vier Leitungen sowie vier Steuergeräten (nachgebildet durch verschiedene Lastwiderstände) diskutiert und mit zugehörigen Simulationsergebnissen aus LTspice [1] verglichen. Das gewählte Netzwerk stellt dabei eine ArtWorst-Case-Szenario mit besonders schlechter Anordnung der Leitungen und Steuergeräte dar, das aufgrund starker Fehlanpassungen viele Mehrfachreflexionen und hohe Resonanzgüten erwarten lässt. Die Idee, ein möglichst schlechtes Netzwerk zu untersuchen, um daraus Gestaltungsregeln für Netzwerke mit gutem EMV-Verhalten abzuleiten, entstammt dem Student Contest 2021 des German Chapters der IEEE EMC Society [2]. Das gleiche und weitere Netzwerke dieser Art werden auch im Beitrag [6] untersucht.
Correction: Mechanical properties of femoral trabecular bone in dogs
Creators: name: Pressel, Thomas
name: Bouguecha, Anas
name: Vogt, Ute
name: Meyer-Lindenberg, Andrea
name: Behrens, Bernd-Arno
name: Nolte, Ingo
name: Windhagen, Henning
Publisher: name: London : BioMed Central Ltd.
Year: 2005
Subjects: subject: Biomedical engineering
subject: Sampling (signal processing)
subject: Ultrasound
subject: Trabecular bone tissue
subject: Computer science
subject: Elastic modulus
subject: Transmitter
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::600 | Technik

description: After the publication of this work [1], we became aware of the fact that the frequency of the ultrasound transmitter that we used for determining the elastic moduli of the trabecular bone specimens was not correctly specified. The oscillation frequency of the ultrasound transmitter was 2 MHz (and not 100 MHz as stated in our work) while we used a sampling rate of 100 MHz. In our publication, the oscillation frequency and sampling rate were confounded. Therefore also the statement in the discussion that we might have determined elastic moduli of trabecular bone tissue rather than the elastic properties of whole specimens because we used an ultrasound frequency > 2 MHz is wrong and has to be omitted.
NOVEL COMPUTATIONAL ELECTROENCEPHALOGRAPHIC (EEG) METHODOLOGIES FOR AUTISM MANAGEMENT AND EPILEPTIC SEIZURE PREDICTION
Creators: name: ATTARD TREVISAN, ADRIAN
Publisher: name: Universit� degli Studi di Milano
Year: 2015

description: The doctoral thesis deals with a novel methodology of looking and processing electroencephalographic (EEG) data. The first part deals with real-time brain stimulation in the form of a sonified neurofeedback therapy derived from a clinically comparable portable, 4-channel EEG system. The therapy aims to provide an effective management for symptoms of the Autism Spectrum Disorder (ASD). ASD is characterized with a high level of delta electroencephalographic waveform levels, while alpha and beta prove to be present at lower levels especially in the frontal-temporal regions. The treatment aims at lowering delta waves and promoting alpha and beta waveforms. The second part of the thesis focuses on using EEG data in the prediction of epileptic seizures. With the help of custom built algorithms and neural networks, an effective prediction of an epileptic seizure can be achieved.
An Approach to Solve Linear Equations Using a Time-Variant Adaptation Based Hybrid Evolutionary Algorithm
Creators: name: Jamali, A. R. M. Jalal Uddin
name: Hashem, M. M. A.
name: Rahman, Md. Bazlar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: For small number of equations, systems of linear (and sometimes nonlinear) equations can be solved by simple classical techniques. However, for large number of systems of linear (or nonlinear) equations, solutions using classical method become arduous. On the other hand evolutionary algorithms have mostly been used to solve various optimization and learning problems. Recently, hybridization of evolutionary algorithm with classical Gauss-Seidel based Successive Over Relaxation (SOR) method has successfully been used to solve large number of linear equations; where a uniform adaptation (UA) technique of relaxation factor is used. In this paper, a new hybrid algorithm is proposed in which a time-variant adaptation (TVA) technique of relaxation factor is used instead of uniform adaptation technique to solve large number of linear equations. The convergence theorems of the proposed algorithms are proved theoretically. And the performance of the proposed TVA-based algorithm is compared with the UA-based hybrid algorithm in the experimental domain. The proposed algorithm outperforms the hybrid one in terms of efficiency.
description: arXiv admin note: text overlap with arXiv:1304.2097
Rehabilitating CIV-based black hole mass estimates in quasars
Creators: name: Runnoe, J. C.
name: Brotherton, M. S.
name: Shang, Zhaohui
name: DiPompeo, M. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Currently, the ability to produce black hole mass estimates using the CIV 1549 line that are consistent with Hb mass estimates is uncertain, due in large part to disagreement between velocity line width measurements for the two lines. This discrepancy between Hb and CIV arises from the fact that both line profiles are treated the same way in single-epoch scaling relationships based on the assumption that the broad-line region is virialized, even though a non-virialized emission component is often significant in the CIV line and absent or weak in the Hb line. Using quasi-simultaneous optical and ultra-violet spectra for a sample of 85 optically bright quasars with redshifts in the range z=0.03-1.4, we present a significant step along the path to rehabilitating the CIV line for black hole mass estimates. We show that the residuals of velocity line width between CIV and Hb are significantly correlated with the peak flux ratio of SiIV+OIV] 1400 to CIV. Using this relationship, we develop a prescription for estimating black hole masses from the ultra-violet spectrum that agree better with Hb-based masses than the traditional CIV masses. The scatter between Hb and CIV masses is initially 0.43 dex in our sample and is reduced to 0.33 dex when using our prescription. The peak flux ratio of SiIV+OIV] 1400 to CIV is an ultraviolet indicator of the suite of spectral properties commonly known as "Eigenvector 1", thus the reduction in scatter between CIV and Hb black hole masses is essentially due to removing an Eigenvector 1 bias in CIV-based masses.
description: 14 pages, 12 figures, accepted to MNRAS
title: Kompetenzen und Berufe  in der Nahrungs- und  Genussmittelindustrie
title: Was Arbeitgeber suchen ; Anhang Berufsprofile
titleType: Subtitle
Creators: name: Mertens, Armin
name: Burstedde, Alexander
name: Goecke, Henry
name: Metzler, Christoph
name: Sträfling, Nicole
Publisher: name: Bertelsmann Stiftung
Year: 2023
Subjects: subject: Berufsprofil
subject: Berufsbild
subject: Kompetenzbedarfe

description: Die Arbeitswelt in der Nahrungs- und Genussmittelindustrie ist zahlreichen Disruptionen ausgesetzt. Bedingt durch anhaltende Digitalisierungsprozesse, die Energiewende und den Umbau der Wirtschaft hin zu einer klimaneutralen Wertschöpfung sowie durch den fortschreitenden demografischen Wandel befindet sich der Arbeitsmarkt unter einem hohen Transformationsdruck. Dadurch können sich in der Nahrungs- und Genussmittelindustrie sowohl Anforderungsprofile bestehender Berufe verändern als auch gänzlich neue Berufe an Bedeutung gewinnen.

Die vorliegende Studie leistet einen wichtigen Beitrag zur Klärung der Frage, welche Kompetenzen in relevanten Berufen der Nahrungs- und Genussmittelindustrie nachgefragt werden. Ausgehend von der Analyse einer großen Menge von Online-Stellenanzeigen können sowohl allgemeine Aussagen über aktuell nachgefragte Kompetenzen von Unternehmen der Nahrungs- und Genussmittelindustrie getroffen als auch die Entwicklung der Nachfrage über die Zeit aufgezeigt werden. Zusätzlich zur Ausarbeitung der Kompetenzprofile wurden Berufsbezeichnungen analysiert, die im Lauf der Zeit an Bedeutung gewonnen haben. Die Ergebnisse dieser Analysen wurden mit Fachleuten aus der Industrie diskutiert und validiert.

In diesem Anhang werden die Berufsprofile zur Studie aufgeführt.
title: Archäologische Informationen, Vol 4 (1978): Archäologische Informationen
Creators: name: DGUF E.V.
Publisher: name: University Library Heidelberg
Year: 2016

description: Konventionelle oder kalibrierte C14-Daten? Argumente auf Grund der archäologisch-historischen Chronologie des zweiten vorchristlichen Jahrtausends...110-117
 Das neolithische Erdwerk Urmitz...157-159
 Formen und Technik neolithischer Steingeräte aus dem Rheinland...159-162
 Inhalt...6
 Zur Neuplanung des Neandertal-Museums: Stellungnahmen zum Aufsatz von H. Schwabedissen in diesem Heft...34
 Zur Neuplanung des Neandertal-Museums: Stellungnahmen zum Aufsatz von H. Schwabedissen in diesem Heft...35
 Zur Neuplanung des Neandertal-Museums: Stellungnahmen zum Aufsatz von H. Schwabedissen in diesem Heft...35-36
 Zur Neuplanung des Neandertal-Museums: Stellungnahmen zum Aufsatz von H. Schwabedissen in diesem Heft...36
 Thermolumineszenz...120-130
 Der Neandertaler-Fund und der Plan eines menschheitsgeschichtlichen Museums im Neandertal...132-144
 Die mittlere Steinzeit im westlichen Deutschland und in den Nachbargebieten...156-157
 Personalia...204-205
 Ausgewählte, kommentierte Bibliographie zum Neolithikum in der Bundesrepublik Deutschland (1970-1977)...176-189
 Gerhard Bosinski und Gisela Fischer: Die Menschdarstellungen von Gönnersdorf der Ausgrabung von 1968, Wiesbaden 1974...190-191
 François Poplin: Les Grands Vertfebrfes de Gönnersdorf. Fouille 1968. Franz Steiner, Wiesbaden 1976...191-193
 Georg Kleeman: Feig aber glücklich. Eine boshafte Anthropologie. Warum der Zeitgenosse Ur-Mensch nicht kämpfen will. Stuttgart 1974...193-194
 Donald Woodforde Clark: Koniag Prehistory. Archaeological investigations at late prehistoric sites on Kodiak Island, Alaska. Tübinger Monographien zur Urgeschichte Bd. 1. Stuttgart — Berlin — Köln — Mainz 1974...194-197
 Wilhelm Barner, Alfeld/Leine. 2. Juli 1893 - 6. Mai 1973...206
 Albert Eggers van Giffen, Zwolle/Niederlande. 14. März 1884 - 31. Mai 1973...206-207
 Karl Brandt. 15. April 1898 - 2. Juli 1974...207
 Martin Jahn. 20. September 1888 - 11. September 1974...207
 Leo Nebelsiek, Detmold. 30. Juli 1886 - 4. Oktober 1974...207-208
 Mitteilungen aus der DGUF...210
 Vorwort...4-5
 Titel
Coronal Mass Ejections As a Mechanism for Producing IR Variability in Debris Disks
Creators: name: Osten, Rachel
name: Livio, Mario
name: Lubow, Steven
name: Pringle, J. E.
name: Soderblom, David
name: Valenti, Jeff
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Motivated by recent observations of short-timescale variations in the infrared emission of circumstellar disks, we propose that coronal mass ejections can remove dust grains on timescales as short as a few days. Continuous monitoring of stellar activity, coupled to infrared observations, can place meaningful constraints on the proposed mechanism.
description: accepted to Astrophysical Journal Letters
title: Gerhard Bosinski und Gisela Fischer: Die Menschdarstellungen von Gönnersdorf der Ausgrabung von 1968, Wiesbaden 1974
Creators: name: Müller-Beck, Hansjürgen
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Gerhard Bosinski und Gisela Fischer: Die Menschdarstellungen von Gönnersdorf der Ausgrabung von 1968, Franz Steiner, Wiesbaden 1974, 131 S., 37 Abb., 74 Taf. u. 3 Beilagen.
Photonic Floquet Topological Insulators
Creators: name: Rechtsman, Mikael C.
name: Zeuner, Julia M.
name: Plotnik, Yonatan
name: Lumer, Yaakov
name: Nolte, Stefan
name: Segev, Mordechai
name: Szameit, Alexander
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The topological insulator is a fundamentally new phase of matter, with the striking property that the conduction of electrons occurs only on its surface, not within the bulk, and that conduction is topologically protected. Topological protection, the total lack of scattering of electron waves by disorder, is perhaps the most fascinating and technologically important aspect of this material: it provides robustness that is otherwise known only for superconductors. However, unlike superconductivity and the quantum Hall effect, which necessitate low temperatures or magnetic fields, the immunity to disorder of topological insulators occurs at room temperature and without any external magnetic field. For this reason, topological protection is predicted to have wide-ranging applications in fault-tolerant quantum computing and spintronics. Recently, a large theoretical effort has been directed towards bringing the concept into the domain of photonics: achieving topological protection of light at optical frequencies. Besides the interesting new physics involved, photonic topological insulators hold the promise for applications in optical isolation and robust photon transport. Here, we theoretically propose and experimentally demonstrate the first photonic topological insulator: a photonic lattice exhibiting topologically protected transport on the lattice edges, without the need for any external field. The system is composed of an array of helical waveguides, evanescently coupled to one another, and arranged in a graphene-like honeycomb lattice. The chirality of the waveguides results in scatter-free, one-way edge states that are topologically protected from scattering.
description: 21 pages, 5 figures
title: Essays on statistical methods for the analysis of social networks
Creators: name: Becatti, Carolina
Publisher: name: IMT Alti Studi Lucca
Year: 2019

description: The present work is a collection of articles [133, 134, 135] that, in broad
 terms, are dedicated to the development of statistical models for the analysis of social networks. Two main approaches are adopted throughout
 this manuscript that, despite being substantially different in their nature,
 are also complementary and accompanied by an active and relevant scientific background.
 From one side, following the statistical physics literature regarding the
 study of networks, we develop models based on the topology of the observed graphs: these methods are built starting from the activity of each
 node, i.e. its degree, and this information is preserved on average in the
 benchmark structure. Therefore any successive analysis that compares
 observed and expected quantities to detect relevant behaviours is, indeed, identifying quantities that cannot be simply reproduced by a model built on the information regarding solely network topology.
 On the other side, we also analyse the stream of literature that focuses on
 generative models. In this framework, the network topology plays a role
 in the definition of the temporal evolution of the node-related link probability, synthesized in the preferential attachment rule that is a function of
 nodes’ degrees. We enrich this formulation in order to take into account
 also some individual features of the nodes, not related to the network
 structure. This addition gives a fundamental contribution in reproducing the evolution of the considered network.
 Which of the two approaches provides a more accurate benchmark is often argument of debate. In this work we have developed theoretical tools
 and tested them with real-world applications, for both the presented
 cases. The results of our analyses show that the information provided
 by these two complementary methodologies can reveal equally valuable
 in reproducing different aspects of the systems object of study.
Increasing the Astrophysical Reach of the Advanced Virgo Detector via the Application of Squeezed Vacuum States of Light
Creators: name: Acernese, F.
name: Agathos, M.
name: Aiello, L.
name: Allocca, A.
name: Amato, A.
name: Ansoldi, S.
name: Antier, S.
name: Arène, M.
name: Arnaud, N.
name: Ascenzi, S.
name: Astone, P.
name: Aubin, F.
name: Collaboration, Virgo
name: Vahlbruch, Henning
name: Mehmet, Moritz
name: Lück, Harald
name: Danzmann, Karsten
Publisher: name: College Park, MD : American Physical Society
Year: 2019
Subjects: subject: article
subject: neutron
subject: noise
subject: vacuum
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Current interferometric gravitational-wave detectors are limited by quantum noise over a wide range of their measurement bandwidth. One method to overcome the quantum limit is the injection of squeezed vacuum states of light into the interferometer's dark port. Here, we report on the successful application of this quantum technology to improve the shot noise limited sensitivity of the Advanced Virgo gravitational-wave detector. A sensitivity enhancement of up to 3.2±0.1 dB beyond the shot noise limit is achieved. This nonclassical improvement corresponds to a 5%-8% increase of the binary neutron star horizon. The squeezing injection was fully automated and over the first 5 months of the third joint LIGO-Virgo observation run O3 squeezing was applied for more than 99% of the science time. During this period several gravitational-wave candidates have been recorded.
title: Donald Woodforde Clark: Koniag Prehistory. Archaeological investigations at late prehistoric sites on Kodiak Island, Alaska. Tübinger Monographien zur Urgeschichte Bd. 1. Stuttgart — Berlin — Köln — Mainz 1974
Creators: name: Hahn, Joachim
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Donald Woodforde Clark: Koniag Prehistory. Archaeological investigations at late prehistoric sites on Kodiak Island, Alaska. Tübinger Monographien zur Urgeschichte Bd. 1, Verlag W. Kohlhamme, Stuttgart — Berlin — Köln — Mainz 1974, 271 S., 36 Textabb., 69 Tab., 50 Fototafeln
Analysis and rejection sampling of Wright-Fisher diffusion bridges
Creators: name: Schraiber, Joshua G.
name: Griffiths, Robert C.
name: Evans, Steven N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Probability (math.PR)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: We investigate the properties of a Wright-Fisher diffusion process started from frequency x at time 0 and conditioned to be at frequency y at time T. Such a process is called a bridge. Bridges arise naturally in the analysis of selection acting on standing variation and in the inference of selection from allele frequency time series. We establish a number of results about the distribution of neutral Wright-Fisher bridges and develop a novel rejection sampling scheme for bridges under selection that we use to study their behavior.
description: 25 pages, 3 figures, 1 table
Effect of Electromagnetic Interference on Integrated Circuits
Creators: name: Czylwik, Andreas
name: Bieder, Stefan
name: Tonder, Sebastian
name: Fisahn, Sven
name: Schaarschmidt, Martin
Publisher: name: Aachen : Apprimus
Year: 2022
Subjects: subject: EMV
subject: Verträglichkeit
subject: Elektromagnetik
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: Critical infrastructure may be disturbed by high power electromagnetic (HPEM) weapons. Both, short impulses and modulated/unmodulated radio frequency (RF) carrier signals may be used. The interfering electromagnetic waves may be coupled by lines between different electronic devices to the inputs or outputs of integrated circuits (ICs) [1]. By shielding the lines or the use of twisted symmetric transmission lines, this effect may be significantly reduced. On the other hand, ICs themselves are influenced by HPEM pulses. A quantitative estimate of the coupling of HPEM waves to lines on an IC itself is required to investigate the effectiveness of applicable protective measures against them.
Ethical Considerations
Creators: name: Moore, Benjamin
name: Henriksson, Linda
name: García Melero, Dorleta
name: Miren Florez Tapia, Ane
Publisher: name: Zenodo
Year: 2023

description: Deliverable D1.4 – Ethical Considerations provides the ethical and legal framework applicable to the RESPONDENT project to ensure that all research activities conducted are legally compliant, ethically acceptable, and socially desirable.
Electronic structure of vacancy resonant states in graphene: a critical review of the single vacancy case
Creators: name: Ducastelle, François
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The resonant behaviour of vacancy states in graphene is well-known but some ambiguities remain concerning in particular the nature of the so-called zero energy modes. Other points are not completely elucidated in the case of low but finite vacancy concentration. In this article we concentrate on the case of vacancies described within the usual tight-binding approximation. More precisely we discuss the case of a single vacancy or of a finite number of vacancies in a finite or infinite system.
FEM-BEM procedures for elastoplastic thermo-viscoplastic contact problems
Creators: name: Geyn, Sergey
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2007
Subjects: subject: FE/BE coupling
subject: finite elements
subject: boundary elements
subject: frictional contact
subject: penalty
subject: Hart's model
subject: updated Lagrange
subject: large deformations
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: [no abstract]
A highly mutable GST is essential for bract colouration in Euphorbia pulcherrima Willd. Ex Klotsch
Creators: name: Vilperte, Vinicius
name: Boehm, Robert
name: Debener, Thomas
Publisher: name: London : BioMed Central
Year: 2021
Subjects: subject: Anthocyanin
subject: Euphorbia pulcherrima
subject: Ionizing radiation
subject: Glutathione S-transferase
subject: Mutation breeding
subject: Poinsettia
subject: Short repeat sequences
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Background: Mutation breeding is an extraordinary tool in plant breeding to increase the genetic variability, where mutations in anthocyanin biosynthesis are targets to generate distinctive phenotypes in ornamental species. In poinsettia, ionizing radiation is routinely applied in breeding programs to obtaining a range of colours, with nearly all pink and white varieties being obtained after γ- or X-ray mutagenesis of red varieties. In the present study we performed a thorough characterization of a potential mutagenesis target gene as the main responsible for the ‘white paradox’ in poinsettia. Results: We identified a GST gene in poinsettia (Bract1) as an essential factor for the expression of anthocyanin-based red colouration of bracts, which presents a high phylogenetic similarity to known anthocyanin-related GSTs. Red poinsettia varieties and white mutants generated from these varieties by X-ray were analysed for polymorphisms related to the ‘white paradox’ in the species. A 4 bp mutation in a short repeat within the coding region of Bract1 is most likely responsible for the appearance of white phenotypes upon irradiation treatment. The polymorphism between wild-type and mutant alleles co-segregates with the phenotype in progeny from heterozygous red and white parents. Moreover, overexpression of Bract1 wild-type allele in Arabidopsis tt19 mutants restored the anthocyanin phenotype, while the Bract1 mutated allele showed to be non-functional. Conclusions: The identified repeat seems to be highly unstable, since mutated plants can be easily detected among fewer than 200 shoots derived from 10 mutated plants. Our data indicate that particular short repeat sequences, similar to microsatellite sequences or so-called dynamic mutations, might be hot spots for genetic variability. Moreover, the identification of the Bract1 mutation fills a gap on the understanding on the molecular mechanism of colour formation in poinsettia.
A revised estimate of the occurrence rate of terrestrial planets in the habitable zones around kepler m-dwarfs
Creators: name: Kopparapu, Ravi kumar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Because of their large numbers, low mass stars may be the most abundant planet hosts in our Galaxy. Furthermore, terrestrial planets in the habitable zones (HZs) around M-dwarfs can potentially be characterized in the near future and hence may be the first such planets to be studied. Recently Dressing & Charbonneau(2013) used Kepler data and calculated the frequency of terrestrial planets in the HZ of cool stars to be 0.15^{+0.13}_{-0.06} per star for Earth-size planets (0.5-1.4 R_{Earth}). However, this estimate was derived using the Kasting et al.(1993) HZ limits, which were not valid for stars with effective temperatures lower than 3700 K. Here we update their result using new HZ limits from Kopparapu et al.(2013) for stars with effective temperatures between 2600 K and 7200 K, which includes the cool M stars in the Kepler target list. The new habitable zone boundaries increase the number of planet candidates in the habitable zone. Assuming Earth-size planets as 0.5 - 1.4 R_{Earth}, when we reanalyze their results, we obtain a terrestrial planet frequency of 0.48^{+0.12}_{-0.24} and 0.53^{+0.08}_{-0.17} planets per M-dwarf star for conservative and optimistic limits of the HZ boundaries, respectively. Assuming Earth-size planets as 0.5 - 2 R_{Earth}, the frequency increases to 0.51^{+0.10}_{-0.20} per star for the conservative estimate and to 0.61^{+0.07}_{-0.15} per star for the optimistic estimate. Within uncertainties, our optimistic estimates are in agreement with a similar optimistic estimate from the radial velocity survey of M-dwarfs (0.41^{+0.54}_{-0.13}, Bonfils et al.(2011)). So, the potential for finding Earth-like planets around M stars may be higher than previously reported.
description: Accepted to Astrophysical Journal Letters, 12 pages, 1 figure
Femtosecond laser writing of embedded waveguides in polymers
Creators: name: Pätzold, Welm Maximilian
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Laser direct writing
subject: polymer waveguides
subject: nonlinear phenomena
subject: Laserdirektschreiben
subject: Polymerwellenleiter
subject: nichtlineare Phänomene
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
title: Hans Seeling: Constantin Koenen (1854-1929) - Leben und Werk des Archäologen. Neuss 1984
Creators: name: Auler, Jost
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Hans Seeling: Constantin Koenen (1854-1929) - Leben und Werk des Archäologen Neuss 1984, 137 Seiten, 30 Abbildungen, Bibliographie Koenens im Anhang, Personenregister.
Filtering geometric imperfection patterns for analysis and design of composite shell structures
Creators: name: Meurer, Alexander Dietmar
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Bemessung
subject: Beulung
subject: Dünne Schale
subject: Epoxide
subject: Kegelschale
subject: Kohlenstofffaserverstärkter Kunststoff
subject: Prepreg
subject: Werkstofffehler
subject: Zylinderschale
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
Cloud Computing Research Challenges
Creators: name: Ullah, Sultan
name: Xuefeng, Zheng
Publisher: name: arXiv
Year: 2013
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: In recent times cloud computing has appeared as a new model for hosting and conveying services over the Internet. This model is striking to business vendors as it eradicates the requirement for users to plan in advance, and it permits the organization to start from low level and then add more resources only if there is an increase in the service demand. Even though cloud computing presents greater opportunities not only to information technology industry, but every organization involved in utilizing the computing in one way or the other, it is still in infancy with many problems to be fixed. The paper discusses research challenges in cloud computing.
description: IEEE 5th International Conference on BioMedical Engineering and Informatics (BMEI 2012)
Financial literacy and peer effects : causes and consequences
Creators: name: Grohmann, Antonia Charlotte
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Financial literacy
subject: household financial decisions making
subject: childhood
subject: gender
subject: peer effects
subject: Haushalts Finanzentscheidungen
subject: Kindkeit
subject: Geschlecht
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: [no abstract]
Non-linear fate of internal wave attractors
Creators: name: Scolan, Hélène
name: Ermanyuk, E. V.
name: Dauxois, Thierry
Publisher: name: arXiv
Year: 2013
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present a laboratory study on the instability of internal wave attractors in a trapezoidal fluid domain filled with uniformly stratified fluid. Energy is injected into the system via standing-wave-type motion of a vertical wall. Attractors are found to be destroyed by parametric subharmonic instability (PSI) via a triadic resonance which is shown to provide a very efficient energy pathway from long to short length scales. This study provides an explanation why attractors may be difficult or impossible to observe in natural systems subject to large amplitude forcing.
title: Archäologische Informationen, Vol 7, No 2 (1984): Archäologische Informationen
Creators: name: DGUF E.V.
Publisher: name: University Library Heidelberg
Year: 2016

description: Stadtarchäologie
description: Stadtarchäologie
description: Titel
 Vorwort...82-83
 Inhalt...84-85
 Stadtkernforschung in Duisburg...98-103
 Stadtkernarchäologie in Koblenz...104-114
 Mittelalterarchäologie in Breisach am Rhein, Kr. Breisgau-Hochschwarzwald...115-120
 Archäologie ohne Spaten - Der Kellerplan Freiburg i.Br....120-124
 Arbeitsgemeinschaft Quantitative Methoden in der Archäologie: Bericht über das Treffen der Arbeitsgemeinschaft am 12.-13. Juni 1984 in Regensburg...155-156
 Die metrische Erfassung von Gefäßfragmenten zur Rekonstruktion vermischter Keramikinventare...157
 Das Steinmaterial der alt- und mittelneolithischen Siedlungsplätze Hasselsweiler 1 und 2...164-165
 Auf guten Böden. Die ersten Bauern in Nordwest-Europa...163
 Nachrichten...171-172
 Siedlungsforschung in Ägypten...150-154
 Ein portables Seriations-Programmpaket mit dynamischer Speicherplatzverwaltung in PASCAL...160-161
Examining a solar climate link in diurnal temperature ranges
Creators: name: Laken, Benjamin A.
name: Čalogović, Jasa
name: Shahbaz, Tariq
name: Pallé, Enric
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: A recent study has suggested a link between the surface level diurnal temperature range (DTR) and variations in the cosmic ray (CR) flux. As the DTR is an effective proxy for cloud cover, this result supports the notion that widespread cloud changes may be induced by the CR flux. If confirmed, this would have significant implications for our understanding of natural climate forcings. Here, we perform a detailed investigation of the relationships between DTR and solar activity (total solar irradiance and the CR flux) from more than 60 years of NCEP/NCAR reanalysis data and observations from meteorological station data. We find no statistically significant evidence to suggest that the DTR is connected to either long-term solar periodicities (11 or 1.68 year) or short-term (daily-timescale) fluctuations in solar activity, and we attribute previous reports on the contrary to an incorrect estimation of the statistical significance of the data. If a CR-DTR relationship exists, based on the estimated noise in DTR composites during Forbush decrease (FD) events, the DTR response would need to be larger than 0.03°C per 1% increase in the CR flux to be reliably detected. Compared with a much smaller rough estimate of -0.005°C per 1% increase in the CR flux expected if previous claims that FD events cause reductions in the cloud cover are valid, we conclude it is not possible to detect a solar related responses in station-based or reanalysis-based DTR datasets related to a hypothesized CR-cloud link, as potential signals would be drowned in noise.
description: 18 pages, 7 figures, 1 table
title: The Effect of States of Emergency on Gubernatorial Approval Ratings
Creators: name: Steinbeiss, Meghan
Publisher: name: University of Kentucky Libraries
Year: 2019

description: To what extent do unexpected, apolitical events affect governors’ popularity? Individuals’ attitudes towards government are often random, and executives at both the state-level and national-level are held accountable for events that they have little control over. In this study, I seek to understand how these unplanned events affect support for elected officials. Specifically, I examine the effect of the declaration of a State of Emergency on gubernatorial approval. I use an ordinary least squares (OLS) model and data from FEMA as well as the United States Officials Job Approval Ratings dataset to answer such questions. The results indicate that not only do natural and manmade disasters NOT have a negative effect on governors’ popularity, there is actually no correlation between the two variables at all. Instead, I find that relative to one another, major disaster declarations have a stronger negative effect on a governor’s approval ratings than emergency declarations. Though surprising, I suggest that these disasters simply do not affect enough individuals for a long enough time to have an impact on gubernatorial popularity.
description: Copyright © Meghan Steinbeiss 2019
FE/BE coupling for time-dependent interface problems in electromagnetics
Creators: name: Prato Torres, Ricardo Antonio
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: Eddy current problem
subject: FEM/BEM-coupling
subject: discontinuous time stepping Galerkin method
subject: a posteriori error estimates
subject: adaptive algorithm
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: [no abstract]
Fault emulation : reconfigurable hardware based fault simulation using logic emulation systems with optimized mapping
Creators: name: Sedaghat Maman, Reza
Publisher: name: Hannover : Universität Hannover
Year: 1999
Subjects: subject: Emulation
subject: Fehlersimulation
subject: Field programmable gate array
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: [no abstract]