cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Atmospheric Evolution on Low-gravity Waterworlds
Creators: name: Arnscheidt, Constantin W.
name: Wordsworth, Robin D.
name: Ding, Feng
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Low-gravity waterworlds ($M\lesssim 0.1 M_{\oplus}$) are of interest for their potential habitability. The weakly bound atmospheres of such worlds have proportionally larger radiative surfaces and are more susceptible to escape. We conduct a unified investigation into these phenomena, combining analytical energy balance and hydrodynamic escape with line-by-line radiative transfer calculations. Because outgoing radiation is forced to increase with surface temperature by the expansion of the radiative surface, we find that these worlds do not experience a runaway greenhouse. Furthermore, we show that a long-lived liquid water habitable zone is possible for low-gravity waterworlds of sufficient mass. Its inner edge is set by the rate of atmospheric escape, because a short-lived atmosphere limits the time available for life to evolve. In describing the physics of the parameter space transition from "planet-like" to "comet-like", our model produces a lower bound for habitability in terms of gravity. These results provide valuable insights in the context of the ongoing hunt for habitable exoplanets and exomoons.
description: published in ApJ; text updated to match published version
Spatio-temporal analysis of correlates associated with the variability of suicide rate in Poland and Sweden. Abstract.
Creators: name: Baran, Anna
Publisher: name: figshare
Year: 2019
Subjects: subject: 111714 Mental Health
subject: FOS: Health sciences

description: Spatio-temporal analysis of correlates associated with the variability of suicide rate in Poland and Sweden
“For to Have Fallen Is Not a Grievous Thing, but to Remain Prostrate after Falling, and Not to Get up Again.” The Persuasive Force of Spatial Metaphors in Chrysostom’s Exhortation to Theodore
Creators: name: Stenger, Jan
Publisher: name: Freie Universität Berlin
Year: 2016
Subjects: subject: Early Christianity
subject: John Chrysostom
subject: spatial metaphors
subject: rhetoric
subject: mental spaces
subject: 900 Geschichte und Geografie::930 Geschichte des Altertums (bis ca. 499), Archäologie::930 Geschichte des Altertums bis ca. 499, Archäologie

description: Metaphern, insbesondere solche, die auf den Raum als Bildspender zurückgreifen, sind ein Hauptcharakteristikum der Redekunst des Kirchenvaters Johannes Chrysostomos (ca. 349–407). Da er ein versierter Redner mit einer Vorliebe für bildliche Sprache war, untersucht der vorliegende Beitrag, wie räumliche Metaphern zum Erreichen der persuasiven Ziele des Chrysostomos beitragen. Im Rückgriff auf die kognitive Metaphertheorie wird der Traktat An Theodor analysiert, wobei die erkenntnistheoretischen und paränetischen Funktionen, die konzeptuelle Metaphern erfüllen, in den Blick genommen werden. Die Besonderheit des Metaphergebrauchs des Chrysostomos besteht darin, dass er sein Publikum in metaphorische Szenarien, die er in seiner visuellen Rhetorik entwirft, einbezieht, um seine Leser dazu zu bringen, ihre Einstellungen und Verhalten zu überprüfen. Damit versucht er, eine praktische Reaktion auf die gegenwärtige Situation hervorzurufen.
Räume der Erkenntnis. Zur Raummetaphorik in der augustinischen Erkenntnistheorie
Creators: name: Fuhrer, Therese
Publisher: name: Freie Universität Berlin
Year: 2016
Subjects: subject: Denkraum
subject: Raum der Memoria
subject: Gefäß-Metapher
subject: imago dei
subject: Kippfigur
subject: 900 Geschichte und Geografie::930 Geschichte des Altertums (bis ca. 499), Archäologie::930 Geschichte des Altertums bis ca. 499, Archäologie

description: Bei der Beschreibung kognitiver Prozesse, in denen die Erkenntnis einer ‚höchsten‘ oder ‚göttlichen‘ Wahrheit vermittelt werden soll, greifen antike philosophische Texte oft auf räumliche Metaphern zurück, mit denen sie diesen Vorgang im ‚Innern‘ des Menschen lokalisieren. Hier interessiert die Frage, mit welchen Raummetaphern Augustin die Erkenntnisprozesse in De trinitate beschreibt. Augustin geht davon aus, dass der Mensch nach Genesis 1,27 „nach Gottes Ebenbild“ geschaffen und daher die imago dei als eine Art Struktur im ‚inneren Menschen‘ präsent seien. Aus der ‚Vermischung‘ (blending) des nicht-metaphorischen Konzepts des Gottesbildes mit dem durch Raummetaphern beschriebenen Menschenbild entwickelt Augustin seine – in der antiken Erkenntnistheorie neue und einzigartige, auch wirkungsmächtige – ‚theologische Epistemologie‘ und eine ‚Onto-Theologie des Bildes‘.
Dinusa taurica Assing 2001
Creators: name: Assing, V.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Dinusa
Dinusa taurica

description: Dinusa taurica ASSING, 2001
M a t e r i a l e x a m i n e d: Turkey: 1, Istanbul ["Constantinople"] (IRSNB); 1, Gaziantep, Sakçagöze ["Sakcagözü"], 900-1300 m, 21.IV.1973, leg. Heinz (MNHUB).
 C o m m e n t: This species was previously known only from Mersin in central southern Anatolia (ASSING 2001a). The above record from Istanbul considerably expands the distribution northwestwards. The male from Gaziantep was collected in the same locality and on the same day as the type specimens of D. subangulata.
description: Published as part of Assing, V., 2014, On the Staphylinidae of Israel II, with a revision of some species of Dinusa SAULCY (Insecta: Coleoptera), pp. 1179-1210 in Linzer biologische Beiträge 46 (2) on page 1205, DOI: 10.5281/zenodo.5308301
Monte Carlo Simulations of Critical Dynamics with Conserved Order Parameter
Creators: name: Zheng, B.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Taking the two-dimensional Ising model for example, short-time behavior of critical dynamics with a conserved order parameter is investigated by Monte Carlo simulations. Scaling behavior is observed, but the dynamic exponent $z$ is updating schemes dependent.
description: Phys. Lett. A277, (2000)257 and the coming Erratum
Batrachops Bibron 1855
Creators: name: Kottelat, Maurice
Publisher: name: Zenodo
Year: 2001
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Tetraodontiformes
Tetraodontidae
Batrachops

description: Batrachops Bibron in Duméril, 1855: 281
 Diagnosis provided, thus an available name. A single included species, thus type species by monotypy: Tetraodon psittacus Bloch in Schneider, 1801. Gender: masculine. A junior homonym of Batrachops Heckel, 1840 in Pisces (Eschmeyer, 1998).
description: Published as part of Kottelat, Maurice, 2001, Nomenclatural status of names of tetraodontiform fishes based on Bibron's unpublished work, pp. 605-618 in Zoosystema 23 (3) on page 614, DOI: 10.5281/zenodo.5401801
Brandans Buch der Welt – eine konkretisierte Metapher
Creators: name: Trînca, Beatrice
Publisher: name: Freie Universität Berlin
Year: 2016
Subjects: subject: Welt als Buch
subject: Augustin
subject: Brandan
subject: Konkretisierte Metapher
subject: Mittelalter
subject: 900 Geschichte und Geografie::930 Geschichte des Altertums (bis ca. 499), Archäologie::930 Geschichte des Altertums bis ca. 499, Archäologie

description: In der Analyse von Sankt Brandans Reise wird das literarische Potential einer religiösen Metapher untersucht, der augustinischen Metapher der Welt als Buch. Auch wenn ein signifikanter Größenunterschied zwischen Welt und Codex besteht, wird die Metapher in einigen Episoden konkret. Die Vorstellung einer Identität zwischen Welt und Buch auf der Handlungsebene und ein paradiesisches Artefakt, auf dem fast die ganze Welt täuschend echt repräsentiert ist, stehen der Erkenntnis entgegen, dass Brandans Reisetagebuch nicht die ganze Welt erfassen kann.
Introduction and conclusion and their importance in scientific research
Creators: name: alalaq, Ahmed
Publisher: name: Zenodo
Year: 2024

description: The introduction of a research paper or thesis is one of the most prominent elements that must be present in a solid scientific study. It acts as the research's facade and the reader's first stop. Through it, many readers can get a comprehensive impression of the study's content and substance, as well as the writer's orientations and inclinations, and the elements of their research are easily revealed to the good reader – on condition that the writer is proficient in their study and topic. Therefore, the introduction must be well-written and organized, encompassing all the components of the idea that the study entails.
Perspektiven der Spolienforschung 2 - Einleitung
Creators: name: Altekamp, Stefan
name: Marcks-Jacobs, Carmen
name: Seiler, Peter
Publisher: name: Freie Universität Berlin
Year: 2016
Subjects: subject: Rom
subject: Maghreb
subject: Antike
subject: materielle Hinterlassenschaft
subject: Aneignung
subject: Wiederverwendung
subject: Umnutzung
subject: 900 Geschichte und Geografie::930 Geschichte des Altertums (bis ca. 499), Archäologie::930 Geschichte des Altertums bis ca. 499, Archäologie

description: Der vorliegende Band nimmt am Beispiel Roms und des Maghreb übereinstimmende und kontrastierende Modi der Aneignung materieller Hinterlassenschaften der Antike in den Blick. Während sich beide Räume politisch und kulturell in unterschiedliche Richtungen bewegen, wird die Antike alternativ als eigene oder fremde Vergangenheit konstruiert. Der pragmatische Zugriff zeitigt strukturell ähnliche organisatorische, logistische und rechtlichlenkende Praktiken.
Dynamics of a two-component atomic Bose-Einstein condensate
Creators: name: Zhang, Ping
name: Chan, C. K.
name: Li, Xiang-Gui
name: Zhao, Xian-Geng
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The dynamical population oscillations between two internal states of a Bose-Einstein condensate are investigated within the rotating wave approximation. Analytical expressions for the population imbalance in the number states and coherent states have been derived, which predict different revival periods. Thus the true quantum state of the condensates may be unambiguously determined by detecting the atom intensity evolution for one internal state.
description: 13 pages, 4 figures. accepted by J. Phys. B
Spin polarization in a two-dimensional electron gas
Creators: name: Davoudi, B.
name: Tosi, M. P.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We evaluate the charge and longitudinal spin response functions of a two-dimensional electron gas with $e^2/r$ interactions in an arbitrary state of spin polarization, using a structurally self-consistent approach to treat exchange and correlations. From the results we assess the nature of the magnetic order in the electronic ground state in zero magnetic field as a function of electron density. We find that states of partial spin polarization are thermodynamically unstable at all values of the coupling strength and that a first-order phase transition occurs with increasing coupling strength from the magnetically disorderd (paramagnetic) phase to the fully spin-polarized (ferromagnetic) phase. This behavior is in qualitative agreement with diffusion Monte Carlo data, although the location of the phase transition is underestimated in our calculations.
description: 12 pages, 10 figuers
Créer un support de formation  en partenariat avec le Centre de ressources DoRANum supports pédagogiques, e-formations Recherche Data Gouv : questionnaire préliminaire
Creators: name: Wysoczynski, Coralie
name: TORRES RAMOS, GABRIELA
name: KEHLI, Lynda
name: Paillassard, Pierrette
name: Sowinski, Claire
name: Poirot, Léa
Publisher: name: Zenodo
Year: 2025
Subjects: Centre de ressources DoRANum Recherche Data Gouv
DoRANum
Formation

description: Porté par l’Inist-CNRS, le centre de ressources DoRANum, supports pédagogiques, e-formation contribue à l’accompagnement des membres de l’écosystème Recherche Data Gouv pour toute question relative à la gestion des données de la recherche.

Le centre de ressources DoRANum capitalise et mutualise des supports de formation génériques et réutilisables par les ateliers de la donnée et les centres de référence thématiques qui forment la communauté scientifique aux questions relatives aux données de la recherche.

La plateforme DoRANum s’inscrit ainsi dans l’écosystème national et s’enrichit de supports de e-formation travaillés avec les ateliers de la donnée et les centres de référence thématiques, en fonction des formations qu’ils dispensent sur leur site et des besoins de leurs communautés.

 

Pourquoi un questionnaire préliminaire ?

Ce questionnaire a été conçu pour aider les dispositifs de l’écosystème Recherche Data Gouv à préciser et contextualiser leurs demandes (ex : public cible, définition des besoins) dans le cadre d’un projet de création d’un support de formation avec le Centre de ressources DoRANum.

Il est mis à disposition sous licence ouverte Etalab et peut être réutilisé, adapté librement.
Aleochara (Xenochara) laevigata GYLLENHAL 1810
Creators: name: Assing, V.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Aleochara
Aleochara laevigata

description: Aleochara (Xenochara) laevigata GYLLENHAL, 1810
M a t e r i a l e x a m i n e d: Israel: 5 [det. Feldmann], Har Hermon, 33°18'N, 35°47'E, 2000 m, doline, pitfall, 3.VII.2010, leg. Drees (cAss, cFel).
 C o m m e n t: Aleochara laevigata was previously unknown from Israel (ASSING 2009d).
description: Published as part of Assing, V., 2014, On the Staphylinidae of Israel II, with a revision of some species of Dinusa SAULCY (Insecta: Coleoptera), pp. 1179-1210 in Linzer biologische Beiträge 46 (2) on page 1198, DOI: 10.5281/zenodo.5308301
Ephippion Bibron
Creators: name: Kottelat, Maurice
Publisher: name: Zenodo
Year: 2001
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Tetraodontiformes
Tetraodontidae
Ephippion

description: Ephippion Bibron in Duméril, 1855: 281
 Diagnosis provided, thus an available name. A single included species, thus type species by monotypy: E. maculatum Bibron in Duméril, 1855. Gender: neuter.
description: Published as part of Kottelat, Maurice, 2001, Nomenclatural status of names of tetraodontiform fishes based on Bibron's unpublished work, pp. 605-618 in Zoosystema 23 (3) on page 614, DOI: 10.5281/zenodo.5401801
Decoherence of electron spin qubits in Si-based quantum computers
Creators: name: Tahan, Charles
name: Friesen, Mark
name: Joynt, Robert
Publisher: name: arXiv
Year: 2002
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Direct phonon spin-lattice relaxation of an electron qubit bound by a donor impurity or quantum dot in SiGe heterostructures is investigated. The aim is to evaluate the importance of decoherence from this mechanism in several important solid-state quantum computer designs operating at low temperatures. We calculate the relaxation rate $1/T_1$ as a function of [100] uniaxial strain, temperature, magnetic field, and silicon/germanium content for Si:P bound electrons. The quantum dot potential is much smoother, leading to smaller splittings of the valley degeneracies. We have estimated these splittings in order to obtain upper bounds for the relaxation rate. In general, we find that the relaxation rate is strongly decreased by uniaxial compressive strain in a SiGe-Si-SiGe quantum well, making this strain an important positive design feature. Ge in high concentrations (particularly over 85%) increases the rate, making Si-rich materials preferable. We conclude that SiGe bound electron qubits must meet certain conditions to minimize decoherence but that spin-phonon relaxation does not rule out the solid-state implementation of error-tolerant quantum computing.
description: 8 figures. To appear in PRB-July 2002. Revisions include: some references added/corrected, several typos fixed, a few things clarified. Nothing dramatic
Fault Diagnosis using Clustering. What Statistical Test to use for Hypothesis Testing?
Creators: name: Amruthnath, Nagdev
name: Gupta, Tarun
Publisher: name: arXiv
Year: 2019
Subjects: subject: Other Statistics (stat.OT)
subject: FOS: Computer and information sciences

description: Predictive maintenance and condition-based monitoring systems have seen significant prominence in recent years to minimize the impact of machine downtime on production and its costs. Predictive maintenance involves using concepts of data mining, statistics, and machine learning to build models that are capable of performing early fault detection, diagnosing the faults and predicting the time to failure. Fault diagnosis has been one of the core areas where the actual failure mode of the machine is identified. In fluctuating environments such as manufacturing, clustering techniques have proved to be more reliable compared to supervised learning methods. One of the fundamental challenges of clustering is developing a test hypothesis and choosing an appropriate statistical test for hypothesis testing. Most statistical analyses use some underlying assumptions of the data which most real-world data is incapable of satisfying those assumptions. This paper is dedicated to overcoming the following challenge by developing a test hypothesis for fault diagnosis application using clustering technique and performing PERMANOVA test for hypothesis testing.
Aleochara (Ceranota) libanica EPPELSHEIM 1889
Creators: name: Assing, V.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Aleochara
Aleochara libanica

description: Aleochara (Ceranota) libanica EPPELSHEIM, 1889
M a t e r i a l e x a m i n e d: Israel: 1, Nahal Keziv, 33°03'N, 35°13'E, 190 m, forest, pitfall, 17.IV.2010, leg. Drees (cAss); 1, same data, but 27.IV.2010 (cAss); 2, same data, but 22.II.2011 (cAss).
 C o m m e n t: Aleochara libanica was originally described from Lebanon and recently also recorded from Israel (ASSING 2009c).
description: Published as part of Assing, V., 2014, On the Staphylinidae of Israel II, with a revision of some species of Dinusa SAULCY (Insecta: Coleoptera), pp. 1179-1210 in Linzer biologische Beiträge 46 (2) on page 1197, DOI: 10.5281/zenodo.5308301
Measurement of Dijet Electroproduction at Small Jet Separation
Creators: name: H1 Collaboration
name: Adloff, C.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Deep-inelastic scattering data in the range 150 < Q^2 < 35000 GeV^2 are used to investigate the minimum jet separation necessary to allow accurate description of the rate of dijet production using next-to-leading order perturbative QCD calculations. The required jet separation is found to be small, allowing about 1/3 of DIS data to be classified as dijet, as opposed to approximately 1/10 with more typical jet analyses. A number of precision measurements made using this dijet sample are well described by the calculations. The data are also described by the combination of leading order matrix elements and parton showers, as implemented in the QCD based Monte Carlo model RAPGAP.
description: 18 pages, 4 figures, 4 tables
Emergent superconductivity in single crystalline $\mathrm{MgTi}_2\mathrm{O}_4$ films via structural engineering
Creators: name: Hu, Wei
name: Feng, Zhongpei
name: Gong, Ben-Chao
name: He, Ge
name: Li, Dong
name: Qin, Mingyang
name: Shi, Yujun
name: Li, Qian
name: Zhang, Qinghua
name: Yuan, Jie
name: Zhu, Beiyi
name: Liu, Kai
name: Xiang, Tao
name: Gu, Lin
name: Zhou, Fang
name: Dong, Xiaoli
name: Zhao, Zhongxian
name: Jin, Kui
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Spinel compounds have demonstrated rich functionalities but rarely shown superconductivity. Here, we report the emergence of superconductivity in the spinel $\mathrm{MgTi}_2\mathrm{O}_4$, known to be an insulator with a complicated order. The superconducting transition is achieved by engineering a superlattice of $\mathrm{MgTi}_2\mathrm{O}_4$ and $\mathrm{SrTiO}_3$. The onset transition temperature in the $\mathrm{MgTi}_2\mathrm{O}_4$ layer can be tuned from 0 to 5 K in such geometry, concurrently with a stretched $c$-axis (from 8.51 to 8.53 Å) compared to the bulk material. Such a positive correlation without saturation suggests ample room for the further enhancement. Intriguingly, the superlattice exhibits isotropic upper critical field $H_{\mathrm{c}2}$ that breaks the Pauli limit, distinct from the highly anisotropic feature of interface superconductivity. The origin of superconductivity in the $\mathrm{MgTi}_2\mathrm{O}_4$ layer is understood in combination with the electron energy loss spectra and the first-principles electronic structure calculations, which point to the birth of superconductivity in the $\mathrm{MgTi}_2\mathrm{O}_4$ layer by preventing the Ti-Ti dimerization. Our discovery not only provides a platform to explore the interplay between the superconductivity and other exotic states, but also opens a new window to realize superconductivity in the spinel compounds as well as other titanium oxides.
description: 5 pages, 4 figures
Factors affecting job tenure in the Australian retail industry
Creators: name: Runciman, Claire Diana
Publisher: name: The Australian National University
Year: 1992
Subjects: subject: Labor market Australia
subject: Labor turnover Australia
subject: Retail trade Employees Australia

description: All sociological traditions recognise the importance of the labour market in the shaping of advantage and disadvanatge in society. However, sociological research has often centred on describing how factors internal to the workplace, such as the labour process, contribute to patterns of disadvantage. One aspect of the labour market operations which has received scant attention in the sociological literature is the different types of tenure attached to different jobs. This thesis considers factors which affect job tenure. The broad context in which patterns of job tenure are created is discussed. The study then narrows its focus to discuss one industry in one place: the retail industry in Australia. Data collected by the Australian Bureau of Statistics are used to present a broad picture of trends in the labour market in the 1980s with respect to job tenure. Data from the Affirmative Action Agency are used to describe patterns of job tenure within the retail industry which are associated with particular firm characteristics. Interviews with retail managers and employees are used to identify some of the social and cultural factors which have affected patterns of job tenure in the retail industry. Finally, two government initiatives are discussed with respect to their likely impact on job tenure in the industry. Changes to the major retail awards are documented and their likely impact on job tenure in the industry are discussed. Government records and interviews with store level managers are used to build a picture of the likely affects of some government sponsored training programs on job tenure in the industry. It is concluded that a convergence to a single pattern of job tenure, as predicted by writers such as Atkinson (1986) and Michon (1987)jis unlikely. Social and cultural factors are found to affect patterns of job tenure in the retail industry to a greater extent than the labour market literature would suggest.
Structural and magnetic properties of GaMnAs layers with high Mn content grown by Migration Enhanced Epitaxy on GaAs(100) substrates
Creators: name: Sadowski, J.
name: Mathieu, R.
name: Svedlindh, P.
name: Domagala, J. Z.
name: Misiuk, J. Bak -
name: Swiatek, K.
name: Karlsteen, M.
name: Kanski, J.
name: Ilver, L.
name: Asklund, H.
name: Sodervall, U.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have grown the ferromagnetic semiconductor GaMnAs containing up to 10% Mn by migration enhanced epitaxy at a substrate temperature of 150^oC. The alternate supply of As2 molecules and Ga and Mn atoms made it possible to grow single crystalline GaMnAs layers at very low substrate temperature, at which conventional molecular beam epitaxial growth under excess As supply is not possible due to As condensation. Secondary ion mass spectroscopy and X-ray diffraction measurements confirmed a higher Mn content in the films grown by this method in comparison to the GaMnAs layers grown by low temperature molecular beam epitaxy. The lattice constant of hypothetical zinc-blende structure MnAs is determined to be 5.9 Å, which deviates somewhat from previously reported values. This deviation is ascribed to growth-condition dependent density of point defects. It is stressed that this effect must be taken into account for any assessment of Mn content from X-ray diffraction data. Magnetization measurements showed an onset of ferromagnetic ordering around 75 K for the GaMnAs layer with 10% Mn. This means that the trend of falling Curie temperatures with increasing Mn concentrations above 5.5% is broken. We tentatively assign this to the variation of the carrier concentration, including contributions from donor and acceptor centers formed by antisite defects and Mn doping, and increased density of magnetically active Mn ions.
description: No LaTeX source; gzipped postscript text + 3 gzipped postscript figures
Quantum control of two interacting electrons in a coupled quantum dot
Creators: name: Zhang, Ping
name: Zhao, Xian-Geng
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Quantum-state engineering, i.e., active manipulation over the coherent dynamics of suitable quantum-mechanical systems, has become a fascinating prospect of modern physics. Here we discuss the dynamics of two interacting electrons in a coupled quantum dot driven by external electric field. We show the two quantum dots can be used to prepare maximally entangled Bell state by varying the strength and duration of an oscillatory electric field. Different from suggestion given by Loss \QTR{it}{et al}.[Phys. Rev. A, \QTR{bf}{57} (1998) 120], the present entanglement involves the spatial degree of freedom for the two electrons. We also find that the coherent tunneling suppression discussed by Grossmann \QTR{it}{et al}.[Phys. Rev. Lett., \QTR{bf}{67} (1991) 516] persists in the two-particle case, i.e., two electrons initially localized in one dot can remain dynamically localized, although the strong Coulomb repulsion prevents them behaving so. Surprisingly, the interaction enhances the degree of localization to a larger extent compared to non-interacting case. We can call this phenomenon Coulomb-enhanced dynamical localization.
description: 9 pages, 10 figures
The legitimation of deliberative democracy
Creators: name: Parkinson, John Richard
Publisher: name: The Australian National University
Year: 2003
Subjects: legitimacy
deliberative democracy
health politics
citizenship
deliberation

description: This thesis explores issues of legitimacy in the theory and practice of deliberative democracy. The starting point is two problems which arise in classical accounts of deliberation. First, if legitimacy depends on the give and take of reasons between free and equal citizens, how can the results of a deliberative moment be legitimate for those who did not take part, when in complex societies there will always be many more outsiders than insiders? Second, there are problems to do with motivations which mean that people may choose not to deliberate even if they can. The thesis begins by criticising the standard deliberative conception of legitimacy as being too narrow, then expands on it to include two different means of establishing links between participants and non-participants: representation and the publicity principle. The former helps by allowing a legitimate basis for including relatively few participants; the latter helps by greatly expanding the institutional possibilities of deliberative democracy, moving away from a reliance on small, self-contained forums and towards a "deliberative system". Having established a set of ideals, I then examine how three key features of the theoretical solution play out in real deliberations, using four deliberative experiments in the UK's National Health Service. One of the reasons why legitimacy is problematic in that context is a conflict between bureaucratic and deliberative imperatives, and so it should not be surprising that legitimacy problems plague some attempts to use deliberation in a liberal state. In chapter four I show how competing representation claims are used as strategic weapons in real policy conflicts, but argue that different claims have strengths and weaknesses depending on context. This has implications for the kind of process used at different points of a policy debate, particularly with regards to participant selection. In chapter five I argue that publicity lessens our reliance on problematic representative solutions, but presents difficulties of its own, largely because there are fundamental, structural barriers to the free exchange of communication such that the media can only transmit quite a narrow range of arguments. In chapter six, I show how disagreements over who and what counts as reasonable adds further complications, highlighting both the positive and negative contributions made by rhetoric and publicity and the varying ability of different deliberative models to handle the tensions. I conclude that while we may have to give up on the idea of a perfectly legitimate deliberative institution, it may be possible to connect several different types of institution, operating at different stages of a decision making process, to create legitimate agreements. I sketch what such a deliberative system might look like, before closing with recommendations for further research.
Semiconductor quantum dot - a quantum light source of multicolor photons with tunable statistics
Creators: name: Regelman, D. V.
name: Mizrahi, U.
name: Gershoni, D.
name: Ehrenfreund, E.
name: Schoenfeld, W. V.
name: Petroff, P. M.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the intensity correlation properties of single photons emitted from an optically excited single semiconductor quantum dot. The second order temporal coherence function of the photons emitted at various wavelengths is measured as a function of the excitation power. We show experimentally and theoretically, for the first time, that a quantum dot is not only a source of correlated non-classical monochromatic photons but is also a source of correlated non-classical \emph{multicolor} photons with tunable correlation properties. We found that the emitted photon statistics can be varied by the excitation rate from a sub-Poissonian one, where the photons are temporally antibunched, to super-Poissonian, where they are temporally bunched.
description: 4 pages, 2 figures
An econometric time-series analysis of Australian housing activity from a macroeconomic perspective
Creators: name: Penm, Jammie H
Publisher: name: The Australian National University
Year: 1993
Subjects: subject: Housing Econometric modelsAustralia
subject: Construction industry Seasonal variations Econometric modelsAustralia

description: The significant fluctuations in housing activity over time can be regarded as "interesting" and "special". The persistence of such cyclical behaviour of housing activity through periods of different economic and demographic conditions has attracted significant research efforts to investigate the underlying influences and the implications for the economy as a whole. In this thesis, the factors which contribute to cyclical fluctuations in housing activity are examined using econometric time-series techniques. While the commonly used indicators of housing activity are stationary over the sample period investigated, most important economic and financial variables which significantly influence housing activity can be characterised as co-integrated of order (1, 1). A new procedure is therefore developed and utilised widely for examination of such systems which contain both co-integrated and stationary series. This procedure is an innovative way of analysing housing activity as the "error-correction" like processes generated from the co-integrated economic and financial variables form an important part of the system in explaining the cyclical fluctuations in housing activity. In this thesis, it is shown that the fluctuations in housing activity are related to the policy instruments used by the Government for stabilising the macroeconomy. In particular, housing activity is found to respond significantly to changes in short term interest rates and real income, or general economic activity, although the effects resulting from changes in the money supply and general price level are much less substantial. While the response of housing activity to a change in short term interest rates is prolonged, the effect of innovations in real income, or general economic conditions, on housing activity only persists for a much shorter period. In addition, policy on immigration is also an important element influencing the level of housing activity. However, over the short to medium terms, changes in economic and financial variables produce more significant effects on housing activity than that generated by net migration or increases in population. Interestingly, housing activity also feeds back on the level of short term interest rates, which suggest that housing activity may be an important determinant in the decision-making processes of the monetary authorities. In contrast to previous testing for Australia, housing activity is found to "Granger cause" general economic growth in a number of modelling exercises. These results consistently affirm that housing activity contains leading information for changes in general economic conditions and, therefore, can be used as a "leading indicator" of general economic activity.
Uniaxial anisotropy, intrinsic and extrinsic damping in Co$_{2}$FeSi Heusler alloy thin films
Creators: name: Hazra, Binoy Krishna
name: Kaul, S. N.
name: Srinath, S.
name: Raja, M. Manivel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ferromagnetic resonance (FMR) technique has been used to study the magnetization relaxation processes and magnetic anisotropy in two different series of the Co2FeSi (CFS) Heusler alloy thin films, deposited on the Si(111) substrate by UHV sputtering. While the CFS films of fixed (50 nm) thickness, deposited at different substrate temperatures (TS) ranging from room temperature (RT) to 600^C, constitute the series-I, the CFS films with thickness t varying from 12 nm to 100 nm and deposited at 550^C make up the series-II. In series-I, the CFS films deposited at TS = RT and 200^C are completely amorphous, the one at TS = 300^C is partially crystalline, and those at TS equal 450^C, 550^C and 600^C are completely crystalline with B2 order. By contrast, all the CFS films in series-II are in the fully-developed B2 crystalline state. Irrespective of the strength of disorder and film thickness, angular variation of the resonance field in the film plane unambiguously establishes the presence of global in-plane uniaxial anisotropy. Angular variation of the linewidth in the film plane reveals that, in the CFS thin films of varying thickness, a crossover from the in-plane local four-fold symmetry (cubic anisotropy) to local two-fold symmetry (uniaxial anisotropy) occurs as t exceeds 50 nm. Gilbert damping parameter α decreases monotonously from 0.047 to 0.0078 with decreasing disorder strength (increasing TS) and jumps from 0.008 for the CFS film with t = 50 nm to 0.024 for the film with t equal 75 nm. Such variations of α with TS and t are understood in terms of the changes in the total (spin-up and spin-down) density of states at the Fermi level caused by the disorder and film thickness.
description: 24 pages, 16 figures
Factor Analysis in Fault Diagnostics Using Random Forest
Creators: name: Amruthnath, Nagdev
name: Gupta, Tarun
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Factor analysis or sometimes referred to as variable analysis has been extensively used in classification problems for identifying specific factors that are significant to particular classes. This type of analysis has been widely used in application such as customer segmentation, medical research, network traffic, image, and video classification. Today, factor analysis is prominently being used in fault diagnosis of machines to identify the significant factors and to study the root cause of a specific machine fault. The advantage of performing factor analysis in machine maintenance is to perform prescriptive analysis (helps answer what actions to take?) and preemptive analysis (helps answer how to eliminate the failure mode?). In this paper, a real case of an industrial rotating machine was considered where vibration and ambient temperature data was collected for monitoring the health of the machine. Gaussian mixture model-based clustering was used to cluster the data into significant groups, and spectrum analysis was used to diagnose each cluster to a specific state of the machine. The significant features that attribute to a particular mode of the machine were identified by using the random forest classification model. The significant features for specific modes of the machine were used to conclude that the clusters generated are distinct and have a unique set of significant features.
Thermal light emission from monolayer MoS2
Creators: name: Dobusch, Lukas
name: Schuler, Simone
name: Perebeinos, Vasili
name: Mueller, Thomas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Because of their strong excitonic photoluminescence (PL) and electroluminescence (EL), together with an excellent electronic tunability, transition metal dichalcogenide (TMD) semiconductors are promising candidates for novel optoelectronic devices. In recent years, several concepts for light emission from two-dimensional (2D) materials have been demonstrated. Most of these concepts are based on the recombination of electrons and holes in a pn-junction, either along the lateral direction using split-gate geometries in combination with monolayer TMDs, or by precisely stacking different 2D semiconductors on top of each other, in order to fabricate vertical van der Waals heterostructures, working as light-emitting diodes (LEDs). Further, EL was also observed along the channel of ionic liquid gated field-effect transistors (FETs) under ambipolar carrier injection. Another mechanism, which has been studied extensively in carbon nanotubes (CNTs) and more recently also in graphene, is thermal light emission as a result of Joule heating. Although the resulting efficiencies are smaller than that of LEDs based on ambipolar electron-hole injection, these experiments provide valuable insights into microscopic processes, such as electron-phonon and phonon-phonon interactions, and the behavior of low-dimensional materials under strong bias in general.
description: 27 pages, 13 figures
Magnetic and superconducting phase diagram of electron-doped Pr$_{1-x}$LaCe$_{x}$CuO$_{4}$
Creators: name: Fujita, M.
name: Kubo, T.
name: Kuroshima, S.
name: Uefuji, T.
name: Kawashima, K.
name: Yamada, K.
name: Watanabe, I.
name: Nagamine, K.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have investigated the magnetism and the superconductivity of an electron-doped Pr$_{1-x}$LaCe$_{x}$CuO$_{4}$ (PLCCO) using single crystal and powder samples by means of zero-field muon spin rotation/relaxation (ZF-$μ$SR) and magnetic susceptibility measurements. Muon spin rotation corresponding to antiferromagnetic (AF) order was observed in the sample with 0.04$\leq${\it x}$\leq$0.11. Changes in magnetic properties of Cu spins upon Ce doping were revealed because the effect of the rare earth moment was negligible. Bulk superconductivity was identified in a wide Ce concentration range of 0.09$\leq${\it x}$\leq$0.20 with a maximum transition temperature of 26 K. At low temperatures, the superconducting (SC) phase abruptly appears by doping with linking quick destroy of the AF ordered phase at {\it x}$\sim$0.09, indicating the competitive relation between two phases.
description: 4 pages, 4figures
The Origin of the Stellar Mass-Stellar Metallicity Relation in the Milky Way Satellites and beyond
Creators: name: Xia, Moran
name: Yu, Qingjuan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Observations and semianalytical galaxy formation and evolution models (SAMs) have suggested the existence of a stellar mass-stellar metallicity relation (MZR), which is shown to be universal for different types of galaxies over a large range of stellar masses ($M_*\sim 10^3$-$10^{11}M_\odot$) and dark matter (DM) halo masses ($M_{\rm halo}\sim 10^9$-$10^{15}h^{-1}M_\odot$). In this work, we construct a chemical evolution model to investigate the origin of the MZR, including both the effects of gas inflows and outflows in galaxies. We solve the MZR from the chemical evolution model, by assuming that the cold gas mass ($M_{\rm cold}$) and the stellar feedback efficiency ($β$) follow some power-law scaling relationships with $M_*$ during the growth of a galaxy, i.e., $M_{\rm cold}\propto M_*^{α_{\rm gs}}$ and $β\propto M_*^{α_{β{\rm s}}}$. We use the SAM to obtain these power-law scaling relations, which appear to be roughly universal over a large range of stellar masses for both satellites and central galaxies within a large range of halo masses. The range of the MZRs produced by our models is in a narrow space, which provides support to the universality of the MZRs. The formation of the MZR is a result caused jointly by that the cold gas fraction decreases with increasing $M_*$ and by that the stellar feedback efficiency decreases with increasing $M_*$ in the galaxy growth, and the exponent in the MZR is around $-α_{β{\rm s}}$ or $1-α_{\rm gs}$. The MZR represents an ''average'' evolutional track for the stellar metallicity of a galaxy. The comparison of our model with some previous models for the origin of MZRs is also discussed.
description: 22 pages, 9 figures, accepted for publication in the Astrophysical Journal
Appendix containing detailed analysis and additional results from The impact of sterility-mortality tolerance and recovery-transmission trade-offs on host–parasite coevolution
Creators: name: Singh, Prerna
name: Best, Alex
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310299
subject: Bioinformatics and computational biology not elsewhere classified
classificationCode: 310399
subject: Ecology not elsewhere classified
classificationCode: 310499
subject: Evolutionary biology not elsewhere classified
classificationCode: 490102
subject: Biological mathematics

description: Understanding the coevolutionary dynamics of hosts and their parasites remains a major focus of much theoretical literature. Despite empirical evidence supporting the presence of sterility-mortality tolerance trade-offs in hosts and recovery-transmission trade-offs in parasites, none of the current models have explored the potential outcomes when both trade-offs are considered within a coevolutionary framework. In this study, we consider a model where the host evolves sterility tolerance at the cost of increased mortality and the parasite evolves higher transmission rate at the cost of increased recovery rate (reduced infection duration), and use adaptive dynamics to predict the coevolutionary outcomes under such trade-off assumptions. We particularly aim to understand how our coevolutionary dynamics compare with single species evolutionary models. We find that evolutionary branching in the host can drive the parasite population to branch, but that cycles in the population dynamics can prevent the coexisting strains from reaching their extremes. We also find that varying crowding does not impact the recovery rate when only the parasite evolves, yet coevolution reduces recovery as crowding intensifies. We conclude by discussing how different host and parasite trade-offs shape coevolutionary outcomes, underscoring the pivotal role of trade-offs in coevolution.
Cherenkov-Plenoscope
Creators: name: Mueller, Sebastian Achim
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Telescopes -- far seeing -- have since centuries revealed insights to objects at cosmic distances. Adopted for gamma-ray-astronomy, ground based Cherenkov-telescopes image the faint Cherenkov-light of air-showers induced by cosmic gamma-rays rushing into earth's atmosphere. In the race for the lowest possible energy-threshold for cosmic gamma-rays, these Cherenkov-telescopes have become bigger, and now reached their physical limits. The required structural rigidity for image-quality constrains a cost-effective construction of telescopes with apertures beyond 30 meter in diameter. Moreover, as the aperture increases, the narrower depth-of-field irrecoverably blurs the images what prevents the reconstruction of the cosmic particle's properties. To overcome these limits, we propose plenoptic-perception with light-fields. Our proposed 71 meter Cherenkov-plenoscope requires much less structural rigidity and turns a narrow depth-of-field into three-dimensional reconstruction-power. With an energy-threshold for gamma-rays of one Giga electron Volt, 20 times lower than what is foreseen for the future planned Cherenkov-Telescope-Array (CTA), the Cherenkov-plenoscope could become the portal to enter the sub second time-scale of the highly variable gamma-ray-sky. Also, this doctoral-thesis contains a second part on the prospects of single-photon-perception in Cherenkov-astronomy.
description: A ground-based approach in one Giga electron Volt, one second time-to-detection gamma-ray-astronomy. Doctoral-thesis at ETH-Zurich's Institute for Particle Physics and Astrophysics (1). In collaboration with ETH-Zurich's Department of Civil, Environmental and Geomatic Engineering (2). We thankfully acknowledge the support provided by: Max Ludwig Ahnen (1), Dominik Neise (1), Axel Arbet-Engels (1), Spyridon Daglas (2), Adrian Egger (2), Eleni Chatzi (2), Felicitas Pauss (1), and Adrian Biland (1). For high resolution figures, follow the DOI to ETH-Zurich-library: https://doi.org/10.3929/ethz-b-000337911