cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
When Things Don't Add Up: The Role of Perceived Fungibility in Repeated-Play Decisions
Creators: name: DeKay, Michael L.
name: Kim, Tai Gyu
Publisher: name: Carnegie Mellon University
Year: 2004
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: Previous research on repeated-play decisions has focused on choices with fungible outcomes. In two studies, we investigated the perceived fungibility of outcomes over repeated plays of risky prospects in a variety of situations, as well as the relationship between perceived fungibility and preferences for taking risks in those situations. Perceived fungibility varied substantially across participants and situations, with outcomes experienced by different people (e.g., medical outcomes for different patients) receiving lower scores. Higher perceived fungibility was associated with more favorable evaluations of repeated plays of risky prospects with positive expectations. Additionally, perceived fungibility moderated the effect of repetition, such that the increased attractiveness of repeated plays relative to a single play was diminished when perceived fungibility was low. Although evaluating the overall distribution of outcomes is arguably rational when monetary outcomes accrue to one person, treating each play as a separate event may be rational when aggregation is considered inappropriate.
What Price Data Tell Us About Drug Markets
Creators: name: Caulkins, Jonathan
name: Reuter, Peter
Publisher: name: Carnegie Mellon University
Year: 1998
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: This paper reviews empirical evidence on drug prices and discusses implications for understanding of drug markets and for policy. The most striking characteristics of drug prices are their high levels and extreme variability over time and space. High prices deter consumption but have ambiguous effects on drug-related crime. The consequences of the variability are largely unexplored and are difficult to determine. Conclusions are mixed with respect to the ability of policy to influence prices. Prohibition plus some degree of enforcement can drive prices far above what they would be if drugs were legal. In certain circumstances, interventions can create transient spikes in price or alter the source of drugs by driving up prices from one source relative to another. However, increasing enforcement over and above an already strongly enforced prohibition appears to have only limited ability to drive prices up further.
Diffraction and Smith-Purcell radiation on the hemispherical bulges in a metal plate
Creators: name: Syshchenko, V. V.
name: Larikova, E. A.
name: Gladkih, Yu. P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The radiation resulting from the uniform motion of a charged particle near a hemispheric bulge in a metal plane is considered. The description of the radiation process based on the method of images is developed for the case of non-relativistic particle and perfectly conducting target. The spectral-angular and spectral densities of the diffraction radiation on the single bulge (as well as the Smith-Purcell radiation on the periodic string of bulges) are computed. The possibility of application of the developed approach to the case of relativistic incident particle is discussed.
description: presented at RREPS-17, September 18-22, 2017, Hamburg, Germany
Angular momentum evolution of stellar disks at high redshifts
Creators: name: Okamura, Taku
name: Shimasaku, Kazuhiro
name: Kawamata, Ryota
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The stellar disk size of a galaxy depends on the ratio of the disk stellar mass to the halo mass, $m_\star \equiv M_\star/M_{\rm dh}$, and the fraction of the dark halo angular momentum transferred to the stellar disk, $j_\star \equiv J_\star/J_{\rm dh}$. Since $m_{\star}$ and $j_{\star}$ are determined by many star-formation related processes, measuring $j_\star$ and $m_\star$ at various redshifts is essential to understand the formation history of disk galaxies. We use the 3D-HST GOODS-S, COSMOS, and AEGIS imaging data and photo-$z$ catalog to examine $j_\star$ and $m_\star$ for star-forming galaxies at $z \sim$ 2, 3, and 4, when disks are actively forming. We find that the $j_\star/m_\star$ ratio is $\simeq 0.77\pm 0.06$ for all three redshifts over the entire mass range examined, $8\times 10^{10} < M_{\rm dh}/h^{-1} M_\odot < 2\times 10^{12}$, with a possible ($<30\%$) decrease with mass. This high ratio is close to those of local disk galaxies, descendants of our galaxies in terms of $M_{\rm dh}$ growth, implying a nearly constant $j_\star/m_\star$ over past 12 Gyr. These results are remarkable because mechanisms controlling angular momentum transfer to disks such as inflows and feedbacks depend on both cosmic time and halo mass and indeed theoretical studies tend to predict $j_\star/m_\star$ changing with redshift and mass. It is found that recent theoretical galaxy formation simulations predict smaller $j_{\star}/m_{\star}$ than our values. We also find that a significant fraction of our galaxies appears to be unstable against bar formation.
description: 16 pages, 11 figures, Submitted to ApJ
What Drug Dealers Tell Us About Their Costs of Doing Business
Creators: name: Caulkins, Jonathan
name: Johnson, Bruce
name: Taylor, Angela
name: Taylor, Lowell
Publisher: name: Carnegie Mellon University
Year: 1998
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: Interviews with low-level drug dealers in New York City reveal that the monetary costs of distributing drugs are modest. Hence, the proportion of sales revenue retained by these sellers is a meaningful indicator of their earnings. There are four distinct types of sellers, with systematic differences across types in the proportion of sales revenue retained. Entrepreneurs who own the drugs they sell retain the largest share (about 50%). Independent consignment sellers retain less (about 25%). Consignment sellers who operate within fixed selling locations or “spots” retain still less (10%), and the sellers who were paid hourly to sell from spots retained the smallest proportion (3%). These differences might explain variation in reports of sellers’ earnings and may have significant implications for the relative ability of enforcement against spots and enforcement against sellers operating outside of spots to drive up drug prices and suppress drug use.
Societal issues, decolonialism and scientific openness: the inaugural World Occupational Science Conference in Vancouver, 18-20 August 2022
Enjeux sociétaux, décolonialisme et ouverture scientifique : le congrès inaugural de la « World Occupational Science Conference »
Creators: name: Albuquerque, Sophie
name: Albuquerque, Pedro H.
name: Bertrand, Romain
Publisher: name: Communauté pour l’Avancement de la Recherche Appliquée Francophone en Ergothérapie (CARAFE)
Year: 2023

description: Sans résumé.
Formation of a tidal dwarf galaxy in the interacting system Arp 245 (NGC 2992/93)
Creators: name: Duc, P. -A.
name: Brinks, E.
name: Springel, V.
name: Pichardo, B.
name: Weilbacher, P.
name: Mirabel, I. F.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Among the various phenomena observed in interacting galaxies is the ejection due to tidal forces of material into the intergalactic medium and its subsequent rearranging which can lead to the formation of self-gravitating tidal dwarf galaxies (TDGs). We investigate this process with a detailed multiwavelength study of the interacting system Arp 245 (NGC 2992/3) and a numerical model of the collision. The system is observed at an early stage of the interaction, about 100 Myr after perigalacticon, though at a time when tidal tails have already developed. Our HI map shows prominent counterparts to the optical tails. Whereas the stellar and gaseous components of the plume that originates from NGC 2992 match, the stellar and HI tails emanating from NGC 2993 have a different morphology. In particular, the HI forms a ring, a feature that has been successfully reproduced by our numerical simulations. The HI emission in the system as a whole peaks at the tip of the NGC 2992 tail where a gas reservoir of about 10^9 Msun, about 60% of the HI towards NGC 2992, coincides with a star-forming optical condensation, A245N. The latter tidal object exhibits properties ranging between those of dwarf irregular galaxies (structural parameters, gas content, star formation rate) and those of spiral disks (metallicity, star formation efficiency, stellar population). Prompted by the questions raised for this particular object, we discuss some issues related to the definition and identification of TDGs (abridged)
description: 43 pages, 20 figures, Astronomical Journal, in press
Liouville Decoherence in a Model of Flavour Oscillations in the presence of Dark Energy
Creators: name: Mavromatos, Nick
name: Sarkar, Sarben
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study in some detail the master equation, and its solution in a simplified case modelling flavour oscillations of a two-level system, stemming from the Liouville-string approach to quantum space time foam. In this framework we discuss the appearance of diffusion terms and decoherence due to the interaction of low-energy string matter with space-time defects, such as D-particles in the specific model of ``D-particle foam'', as well as dark energy contributions. We pay particular attention to contrasting the decoherent role of a cosmological constant in inducing exponential quantum damping in the evolution of low-energy observables, such as the probability of flavour oscillations, with the situation where the dark energy relaxes to zero for asymptotically large times, in which case such a damping is absent. Our findings may be of interest to (astrophysical) tests of quantum space-time foam models in the not-so-distant future.
description: 27 pages latex
L’ergothérapeute, l’intervenant clé d’une réadaptation COVID longue
Creators: name: Lagueux, Émilie
name: Litwin, Dobrochna
name: Dufour, Guylaine
name: Beauregard-Millaire, Jacinthe
name: Riou, Geneviève
name: Verville, France
Publisher: name: Communauté pour l’Avancement de la Recherche Appliquée Francophone en Ergothérapie (CARAFE)
Year: 2023

description:  
 
description: Sans résumé.
FUSE Observations of the HD Molecule toward HD 73882
Creators: name: Ferlet, R.
name: Andre, M.
name: Hebrard, G.
name: Lecavelier-des-Etangs, A.
name: Lemoine, M.
name: Pineau-des-Forets, G.
name: Roueff, E.
name: Rachford, B.
name: Shull, J. M.
name: Snow, T. P.
name: Tumlinson, J.
name: Vidal-Madjar, A.
name: York, D. G.
name: Moos, H. W.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Lyman and Werner band systems of deuterated molecular hydrogen (HD) occur in the far UV range below 1200 A. The high sensitivity of the FUSE mission can give access, at moderate resolution, to hot stars shining through translucent clouds, in the hope of observing molecular cores in which deuterium is essentially in the form of HD. Thus, the measurement of the HD/H2 ratio may become a new powerful tool to evaluate the deuterium abundance, D/H, in the interstellar medium. We report here on the detection of HD toward the high extinction star HD 73882 [E(B-V)=0.72]. A preliminary analysis is presented.
description: 4 pages + 4 .ps figures. This paper will appear in a special issue of Astrophysical Journal Letters devoted to the first scientific results from the FUSE mission
Polymer chains in confined spaces and flow-injection problems: some remarks
Creators: name: Sakaue, Takahiro
name: Raphael, Elie
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We revisit the classical problem of the behavior of an isolated linear polymer chain in confined spaces, introducing the distinction between two different confinement regimes (the {\it weak} and the {\it strong} confinement regimes, respectively). We then discuss some recent experimental findings concerning the partitioning of individual polymers into protein pores. We also generalize our study to the case of branched polymers, and study the flow-injection properties of such objects into nanoscopic pores, for which the strong confinement regime plays an important role.
description: Submitted June 2005
title: Investigating the Far-Right Online: Using Text Data to Understand Online Subcultures
Creators: name: Brace, Lewys
Publisher: name: National Centre for Research Methods
Year: 2022

description: This contribution provides an introduction for social science researchers on the use of computational methods within investigative research for analysing large text corpora to develop an understanding of online communities and subcultures. It offers a case study of the MineChans project, which utilised such methods in investigating the relationship between the online discussions on a collection of anonymous image-board forums, including 4chan and 8chan, and real-world, offline, attacks by right-wing extremists, making these forums a radicalising milieu. While these analytical techniques are new, they are actually fairly easy for social researchers to implement due to the nature of contemporary high-level programming languages such as Python.
Additional file 2 of The genome evolution and domestication of tropical fruit mango
Creators: name: Wang, Peng
name: Luo, Yingfeng
name: Huang, Jianfeng
name: Gao, Shenghan
name: Zhu, Guopeng
name: Dang, Zhiguo
name: Gai, Jiangtao
name: Yang, Meng
name: Zhu, Min
name: Zhang, Huangkai
name: Ye, Xiuxu
name: Gao, Aiping
name: Tan, Xinyu
name: Wang, Sen
name: Wu, Shuangyang
name: Cahoon, Edgar
name: Bai, Beibei
name: Zhao, Zhichang
name: Li, Qian
name: Wei, Junya
name: Chen, Huarui
name: Luo, Ruixiong
name: Gong, Deyong
name: Tang, Kexuan
name: Zhang, Bing
name: Ni, Zhangguang
name: Huang, Guodi
name: Hu, Songnian
name: Chen, Yeyuan
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Virology

description: Additional file 2: Figure S1. The linear relation between the genomic assembly and the genetic map of mango. Figure S2. Comparisons of mango proteins among five annotation evidences. Figure S3. Frequency distributions of synonymous substitution rates (Ks) between homologous gene pairs in syntenic blocks. Figure S4. The ka/ks distribution of syntenic homologous genes retained from recent WGD. Figure S5. Appearance of a mango fruit for the variety Alphonso, demonstrating red flush of the peel. Figure S6. Phylogeny of CHS genes in mango, sweet orange and Arabidopsis. Figure S7. Phylogeny of CHS genes in Anacardiaceae with non-Anacardiaceae CHSs as outgroups. Figure S8. Phylogeny of CHS genes in Arabidopsis thaliana, Citrus sinensis, Mangifera indica, Pistacia vera, Sclerocarya birrea and Dimocarpus longan. Figure S9. Alignment of peptide sequences of CHS in mango and Arabidopsis. Figure S10. The percentage of ROH (>50 kb) in mango genomes for the Mangifera species and different cultivars. Figure S11. Relationship between the genomic percentage of ROH (>50 kb) and heterozygous rate.
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome I, Cart. 185 (11 H 70), f. 0098r
Creators: name: de la Côte d'Or, Archives départementales
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome I, Archives départementales de la Côte-d'Or, Cart. 185 (11 H 70), f. 0098r, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome I, Archives départementales de la Côte-d'Or, Cart. 185 (11 H 70), f. 0098r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Fluctuations and Energy Shifts in the Bethe Ansatz
Creators: name: Beisert, N.
name: Freyhult, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study fluctuations and finite size corrections for the ferromagnetic thermodynamic limit in the Bethe ansatz for the Heisenberg XXX1/2 spin chain, which is the AdS/CFT dual of semiclassical spinning strings. For this system we derive the standard quantum mechanical formula which expresses the energy shift as a sum over fluctuation energies. As an example we apply our results to the simplest, one-cut solution of this system and derive its spectrum of fluctuations.
description: 8 pages, 1 figure, v2: comparison to string theory improved, reference added
Generation of large mitochondrial and nuclear nucleotide sequences and phylogenetic analyses using high-throughput short-read datasets for endangered Placostylinae snails of the southwest Pacific
Creators: name: Quenu, Mathieu
name: Trewick, Steven A.
name: Daly, Elizabeth E.
name: Morgan-Richards, Mary
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 60506 Virology

description: Placostylinae are a sub-family of terrestrial land snails endemic to the southwest Pacific. Some species are harvested for food, and others are critically endangered. Here we assemble and characterise complete mitochondrial genomes, as well as three nuclear markers (partial 45S ribosomal cassettes and the histone genes H3 and H4) of five snail species from three geographical regions (New Zealand, New Caledonia and the Solomon Islands). Mitogenomes of Placostylinae snails ranged between 14,544 bp and 14,711 bp, with minor variation in the position of tRNA tyrosine (Y) and tRNA tryptophane (W). The 45S ribosomal cassette contained intra-genomic nucleotide variation in ITS2. Cassettes containing histone genes H3 and H4 and their non-transcribed spacer region were assembled for three species, with the two genes coded in the same direction. Phylogenetic analysis on this large dataset (mitochondrial genome + nuclear markers) supported geographical clustering of species but could not confidently infer monophyly of the four Placostylus species with respect to Eumecostylus cleryi. Analysis based on shorter cytochrome c oxidase sequences with a wider taxon sampling found species representing the genera Eumecostylus and Placocharis were nested within the phylogenetic diversity of Placostylus. Multi-locus phylogenetic analysis containing mitochondrial and nuclear sequences did not support monophyly of Placostylinae.
Superfluid Fermi atomic gas as a quantum simulator for the study of neutron-star equation of state
Creators: name: van Wyk, Pieter
name: Tajima, Hiroyuki
name: Inotani, Daisuke
name: Ohnishi, Akira
name: Ohashi, Yoji
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We theoretically propose an idea to use an ultracold Fermi gas as a quantum simulator for the study of the neutron-star equation of state (EoS) in the low-density region. Our idea is different from the standard quantum simulator that heads for {\it perfect} replication of another system, such as a Hubbard model discussed in high-$T_{\rm c}$ cuprates. Instead, we use the {\it similarity} between two systems, and theoretically make up for the difference between them. That is, (1) we first show that the strong-coupling theory developed by Nozières-Schmitt Rink (NSR) can quantitatively explain the recent EoS experiment on a $^6$Li superfluid Fermi gas in the BCS (Bardeen-Cooper-Schrieffer)-unitary limit far below the superfluid phase transition temperature $T_{\rm c}$. This region is considered to be very similar to the low density region (crust regime) of a neutron star (where a nearly unitary $s$-wave neutron superfluid is expected). (2) We then theoretically compensate the difference that, while the effective range $r_{\rm eff}$ is negligibly small in a superfluid $^6$Li Fermi gas, it cannot be ignored ($r_{\rm eff}=2.7$ fm) in a neutron star, by extending the NSR theory to include effects of $r_{\rm eff}$. The calculated EoS when $r_{\rm eff}=2.7$ fm is shown to agree well with the previous neutron-star EoS in the low density region predicted in nuclear physics. Our idea indicates that an ultracold atomic gas may more flexibly be used as a quantum simulator for the study of other complicated quantum many-body systems, when we use, not only the experimental high tunability, but also the recent theoretical development in this field. Since it is difficult to directly observe a neutron-star interior, our idea would provide a useful approach to the exploration for this mysterious astronomical object.
description: 29 pages, 7 figures
Spin and temperature dependent study of exchange and correlation in thick two-dimensional electron layers
Creators: name: Dharma-wardana, M. W. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The exchange and correlation $E_{xc}$ of strongly correlated electrons in 2D layers of finite width are studied as a function of the density parameter $r_s$, spin-polarization $ζ$ and the temperature $T$. We explicitly treat strong-correlation effects via pair-distribution functions, and introduce an equivalent constant-density approximation (CDA) applicable to all the inhomogeneous densities encountered here. The width $w$ defined via the CDA provides a length scale defining the $z$-extension of the quasi-2D layer resident in the $x$-$y$ plane. The correlation energy $E_c$ of the quasi-2D system is presented as an interpolation between a 1D gas of electron-rods (for $w/r_s>1$) coupled via a log(r) interaction, and a 3D Coulomb fluid closely approximated from the known {\it three-dimensional} correlation energy when $w/r_s$ is small. Results for the $E_{xc}(r_s,ζ,T)$, the transition to a spin-polarized phase, the effective mass $m^*$, the Landé $g$-factor etc., are reported here.
description: Revtex manuscript, 9 postscript figures
Research Data and Publications - Transparent Journal Papers
Creators: name: Holl, András
Publisher: name: Zenodo
Year: 2024
Subjects: Building trust and transparency into research and curation techniques, costs, and workflows

description: Even today a lot of data get published in articles - in the text, in tables, figures, appendices. How could such data be made easily accessible and harvestable? How could opaque articles be made data transparent? We review the present practices and the possibilities.
Permohonan Mengikuti Latihan Pengurusan Data Sains Terbuka Kini Dibuka
Creators: name: Ating, Rashid
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 460105
subject: Applications in social sciences and education
classificationCode: 500206
subject: History and philosophy of the social sciences

description: Kuala Lumpur - Akademi Sains Malaysia (ASM) telah membuka permohonan bagi mengikuti latihan pengurusan data sains terbuka yang akan bermula pada 29 April 2024 hingga 22 Julai 2024.
L'évaluation en ergothérapie. Un livre paru en 2023 et dirigé par J. Criquillon-Ruiz, F. Soum-Pouyalet et S. Tétreault
L'évaluation en ergothérapie. Un livre paru en 2023 et dirigé par J. Criquillon-Ruiz, F. Soum-Pouyalet et S. Tétreault
Creators: name: Scherrer, Alice
Publisher: name: Communauté pour l’Avancement de la Recherche Appliquée Francophone en Ergothérapie (CARAFE)
Year: 2024

description: Without summary.
description: Sans résumé.
title: Préface_Pour le maçon et le plâtrier
Creators: name: AmateurS
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Préface
description: ID_PARA_00734
Rotating Electric Classical Solutions of 2+1 D U(1) Einstein Maxwell Chern-Simons
Creators: name: Ferreira, P. Castelo
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study electric stationary radial symmetric classical solutions of the U(1) Einstein Maxwell Chern-Simons theory coupled to a gravitational massless scalar field with a cosmological constant in 2+1 dimensions. Generic aspects of the theory are discussed at an introductory level. We study solutions for both negative sign (standard) and positive sign (ghost) of the gauge sector concluding that although the expressions for the solutions are the same, the constants as well as the physics change significantly. It is found a rotating electric point particle. For the standard sign and specific values of the parameters corresponding to solutions with positive mass the singularity is dressed (in the sense that itself constitutes an horizon). The space-time curvatures can be both positive or negative depending on the dominance of the scalar or topologically massive matter. The Chern-Simons term is responsible for interesting features, besides only allowing for rotating solutions, it imposes restrictive bounds on the cosmological constant $Λ$ such that it belongs to a positive interval and is switch on and off by the topological mass $m^2$. Furthermore the charge, angular momentum and mass of the particle solution are expressed uniquely as functions of the ratio between the cosmological constant and the topological mass squared $x=Λ/m^2$. The main drawback of our particle solution is that the mass is divergent. Our background is a rotating flat space without angular deficit. We briefly discuss parity and time-inversion violation by the Chern-Simons term which is explicit in the solutions obtained, their angular momentum only depends on the relative sign between the Chern-Simons term and the Maxwell term. Trivial solutions are briefly studied holding non-singular extended configurations.
description: 38+2 pages; v2: 35 pages. Current version with journal. Major changes in concepts (the scalar field cannot be interpreted as a Dilaton). Accordingly title, introduction and conclusions have changed. Due to a '-' sign error the horizons exist for positive mass configurations. References added. v3: eq (2.23) corrected, added eq (2.24)
Quantum LC circuits with charge discreteness: normal and anomalous spectrum
Creators: name: Flores, J. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A solvable quantum $LC$ circuit with charge discreteness is studied. Two discrete spectral branches are obtained: (i) the normal branch corresponding to a charged capacitor with integer effective charge $k=q_{e}n$ ($q_{e}$ elementary charge, $n$ integer) and (ii) the anomalous branch where the energy is related to non-integer effective charge $k=q_{e}(n-x)$ in the capacitor. For usual mesoscopics data like quantum point contact we found $x\sim 0.7$.
description: 8 pages, 0 figures
Spin-orbit coupling, optical transitions, and spin pumping in mono- and few-layer InSe
Creators: name: Magorrian, S. J.
name: Zólyomi, V.
name: Fal'ko, V. I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that spin-orbit coupling (SOC) in InSe enables the optical transition across the principal band gap to couple with in-plane polarized light. This transition, enabled by $p_{x,y}\leftrightarrow p_z$ hybridization due to intra-atomic SOC in both In and Se, can be viewed as a transition between two dominantly $s$- and $p_z$-orbital based bands, accompanied by an electron spin-flip. Having parametrized $\mathbf{k\cdot p}$ theory using first principles density functional theory we estimate the absorption for $σ^{\pm}$ circularly polarized photons in the monolayer as $\sim 1.5\%$, which saturates to $\sim 0.3\%$ in thicker films ($3-5$ layers). Circularly polarized light can be used to selectively excite electrons into spin-polarized states in the conduction band, which permits optical pumping of the spin polarization of In nuclei through the hyperfine interaction.
description: To appear in Phys. Rev. B
RESPONSIVENESS AND CUSTOMER PATRONAGE OF MICROFINANCE BANKS IN AKWA IBOM STATE, NIGERIA
Creators: name: Aniekan, Eyo Awah
name: Aniefiok, Okon Akpan
name: Diala, Ogadinma Emmanuel
Publisher: name: Hollex journals
Year: 2024
Subjects: Customer patronage
Macro Finance
Banks
Responsiveness
Services and Efficiency

description: The main objective of this study was to examine the influence of responsiveness on Customer patronage of Microfinance banks in Akwa Ibom State. To achieve this objective, the main source of data was through primary sources with the use of a questionnaire. The researcher adopted the survey research design approach and data were collected from 323 respondents drawn from the banks customers’ base. A total number of 295 copies of the questionnaire were retrieved in useable form representing 91.3 percent, data was analyzed using the Simple Regression Model (SRM). Data generated from the study were processed using descriptive and inferential statistics and hypothesis tested at 0.05 level of significance. Findings revealed that responsiveness had significant influence on customer patronage of Microfinance banks in Akwa Ibom State. Thus, the study recommends that Microfinance banks employees should Show willingness to help their customers as well as providing prompt service to aid build customers trust, exceed their expectations and enhance their patronage
Invasion and adaptive evolution for individual-based spatially structured populations
Creators: name: Champagnat, Nicolas
name: Méléard, Sylvie
Publisher: name: Weierstrass Institute
Year: 2006
Subjects: subject: spatially structured population
subject: adaptive evolution
subject: stochastic individual-based process
subject: birth-and-death point process
subject: reflected diffusion
subject: mutation and selection
subject: nonlinear reaction-diffusion equation
subject: nonlocal and local interactions
subject: clustering and polymorphism
subject: invasion and evolution
subject: 60J85
subject: 60K35
subject: 92D15
subject: 92D25
subject: 35K60

description: The interplay between space and evolution is an important issue in population dynamics, that is in particular crucial in the emergence of polymorphism and spatial patterns. Recently, biological studies suggest that invasion and evolution are closely related. Here we model the interplay between space and evolution starting with an individual-based approach and show the important role of parameter scalings on clustering and invasion. We consider a stochastic discrete model with birth, death, competition, mutation and spatial diffusion, where all the parameters may depend both on the position and on the trait of individuals. The spatial motion is driven by a reflected diffusion in a bounded domain. The interaction is modelled as a trait competition between individuals within a given spatial interaction range. First, we give an algorithmic construction of the process. Next, we obtain large population approximations, as weak solutions of nonlinear reaction-diffusion equations with Neumann's boundary conditions. As the spatial interaction range is fixed, the nonlinearity is nonlocal. Then, we make the interaction range decrease to zero and prove the convergence to spatially localized nonlinear reaction-diffusion equations, with Neumann's boundary conditions. Finally, simulations based on the microscopic individual-based model are given, illustrating the strong effects of the spatial interaction range on the emergence of spatial and phenotypic diversity (clustering and polymorphism) and on the interplay between invasion and evolution. The simulations focus on the qualitative differences between local and nonlocal
Scattering matrices and Weyl functions
Creators: name: Behrndt, Jussi
name: Malamud, Mark M.
name: Neidhardt, Hagen
Publisher: name: Weierstrass Institute
Year: 2006
Subjects: subject: scattering system
subject: scattering matrix
subject: boundary triplet
subject: (Titchmarsh-) Weyl function
subject: spectral shift function
subject: Krein-Birman formula
subject: Sturm-Liouville operator
subject: Dirac operator
subject: Schroedinger operator
subject: 47B50

description: For a scattering system consisting of two selfadjoint extensions of a symmetric operator A with finite deficiency indices, the scattering matrix and the spectral shift function are calculated in terms of the Weyl function associated with the boundary triplet for A* and a simple proof of the Krein-Birman formula is given. The results are applied to singular Sturm-Liouville operators with scalar- and matrix-valued potentials, to Dirac operators and to Schroedinger operators with point interactions.
What Do We Know About Competition and Quality in Health Care Markets?
Creators: name: Gaynor, Martin
Publisher: name: Carnegie Mellon University
Year: 2006
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: The goal of this paper is to identify key issues concerning the nature of competition in health care markets and its impacts on quality and social welfare and to identify pertinent findings from the theoretical and empirical literature on this topic. The theoretical literature in economics on competition and quality, the theoretical literature in health economics on this topic, and the empirical findings on competition and quality in health care markets are surveyed and their findings assessed. Theory is clear that competition increases quality and improves consumer welfare when prices are regulated (for prices above marginal cost), although the impacts on social welfare are ambiguous. When firms set both price and quality, both the positive and normative impacts of competition are ambiguous. The body of empirical work in this area is growing rapidly. At present it consists entirely of work on hospital markets. The bulk of the empirical evidence for Medicare patients shows that quality is higher in more competitive markets. The empirical results for privately insured patients are mixed across studies.
A finite volume scheme for nonlinear parabolic equations derived from one-dimensional local Dirichlet problems
Creators: name: Eymard, Robert
name: Fuhrmann, Jürgen
name: Gärtner, Klaus
Publisher: name: Weierstrass Institute
Year: 2004
Subjects: subject: Finite Volume Methods
subject: Convergence
subject: Nonlinear parabolic PDEs
subject: 65M12

description: In this paper, we propose a new method to compute the numerical flux of a finite volume scheme, used for the approximation of the solution of parabolic partial differential equation with nonlinear diffusion and convection terms a 1D, 2D or 3D domain. The nonlinear diffusion term be bounded away from zero except a finite number of values. The method is based on the solution, at each interface between two control volumes, of a nonlinear elliptic two point boundary value problem derived from the original equation with Dirichlet boundary conditions given by the values of the discrete approximation in both control volumes. We prove the existence of a solution to this two point boundary value problem. We show that the expression for the numerical flux can be yielded without referring to this solution. Furthermore, we prove that the so designed finite volume scheme has the expected stability properties and that its solution converges to the weak solution of the continuous problem. Numerical results show the increase of accuracy due to the use of this scheme, compared to some other schemes.
Measuring Supernova Neutrino Temperatures using Lead Perchlorate
Creators: name: Elliott, S. R.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Neutrino interactions with lead produce neutrons in numbers that depend on neutrino energy and type. A detector based on lead perchlorate, for example, would be able to measure the energy deposited by electrons and gammas in coincidence with the number of neutrons produced. Sorting the electron energy spectra by the number of coincident neutrons permits the identification of the neutrino type that induced the reaction. This separation allows an analysis which can determine the temperatures of electron neutrinos and electron anti-neutrinos from a supernova in one experiment. The neutrino reaction signatures of lead perchlorate and the fundamentals of using this material as a neutrino detector are described.
description: minor changes, reference update
Data privacy, transparency and trust in health-related research
Creators: name: Churakova, Olga
name: Krebs, Christine
Publisher: name: Zenodo
Year: 2024
Subjects: Data trust
Transparency
Privacy
Health-related data

description: Researchers from the life and human sciences produce numerous of sensitive or highly sensitive data. How can a balance between privacy and transparency for obtaining and using data in clinical research be achieved? We aim to raise awareness for potential issues in research data management and to promote good scientific practices in health-related research to make it trusted and FAIR.
Conférence Occupational Science Europe 2023: Perspectives internationales sur les occupations situées dans la vie quotidienne: Un point de vue germanophone sur le congrès, paru dans la revue Ergoscience
Conférence Occupational Science Europe 2023: Perspectives internationales sur les occupations situées dans la vie quotidienne: Un point de vue germanophone sur le congrès, paru dans la revue Ergoscience
Creators: name: Schiller, Sandra
name: Nussbaumer, Léa Camille Justine
name: Kühne, Nicolas
Publisher: name: Communauté pour l’Avancement de la Recherche Appliquée Francophone en Ergothérapie (CARAFE)
Year: 2024

description: Without summary.
description: Sans résumé.
Ergothérapie et soins palliatifs : Soutenir la vie en attendant la fin
Ergothérapie et soins palliatifs : Soutenir la vie en attendant la fin
Creators: name: Pellerin, Marc-André
name: Kühne, Nicolas
name: Paupelin, Virgile
name: Raffourt, Louise
name: Mottaz, Clarisse
name: Libon, Hélène
Publisher: name: Communauté pour l’Avancement de la Recherche Appliquée Francophone en Ergothérapie (CARAFE)
Year: 2024

description: Without summary.
description: Sans résumé.
Using Receiver Operating Characteristic Analysis to Evaluate Large-Change Forecast Accuracy
Creators: name: Wilpen  Gorr
name: Schneider, Matthew
Publisher: name: Carnegie Mellon University
Year: 2010
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: This paper applies receiver operating characteristics (ROC) analysis to M3 Competition, micro monthly time series for one-month-ahead forecasts. Using the partial area under the curve (PAUC) criterion as a forecast accuracy measure and paired-comparison testing via bootstrapping, we find that complex methods (AutomatANN, Flores-Pearce2, Forecast ProSmart FCS, and Theta) perform best for forecasting large declines in these time series, which tended as a group to decline over time. A regression model of PAUC on a judgmental index for forecast method complexity provides further confirming evidence. We also found that a combination forecast, consisting of the median value of the top three methods, to perform better than the component methods, although not statistically so. The classification of top methods matches that obtained using conventional forecast accuracy methods in the M3 Competition―complex methods forecast these series better than simple ones.
Helium Reionization Simulations. III. The Helium Lyman-$α$ Forest
Creators: name: La Plante, Paul
name: Trac, Hy
name: Croft, Rupert
name: Cen, Renyue
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In La Plante et al. (2017), we presented a new suite of hydrodynamic simulations with the aim of accurately capturing the process of helium II reionization. In this paper, we discuss the observational signatures present in the He II Ly$α$ forest. We show that the effective optical depth of the volume $τ_\mathrm{eff}$ is not sufficient for capturing the ionization state of helium II, due to the large variance inherent in sightlines. However, the He II flux PDF can be used to determine the timing of helium II reionization. The amplitude of the one-dimensional flux power spectrum can also determine the ionization state of helium II. We show that even given the currently limited number of observations ($\sim$50 sightlines), measurements of the flux PDF can yield information about helium II reionization. Further, measurements using the one-dimensional power spectrum can provide clear indications of the timing of reionization, as well as the relative bias of sources of ionizing radiation.
description: 9 pages, 5 figures. Submitted to ApJ
Varying coefficient GARCH versus local constant volatility modeling. Comparison of the predictive power
Creators: name: Polzehl, Jörg
name: Spokoiny, Vladimir
Publisher: name: Weierstrass Institute
Year: 2004
Subjects: subject: varying coefficient GARCH
subject: adaptive weights
subject: 91B84
subject: 62P05

description: GARCH models are widely used in financial econometrics. However, we show by mean of a simple simulation example that the GARCH approach may lead to a serious model misspecification if the assumption of stationarity is violated. In particular, the well known integrated GARCH effect can be explained by nonstationarity of the time series. We then introduce a more general class of GARCH models with time varying coefficients and present an adaptive procedure which can estimate the GARCH coefficients as a function of time. We also discuss a simpler semiparametric model in which the ( beta )-parameter is fixed. Finally we compare the performance of the parametric, time varying nonparametric and semiparametric GARCH(1,1) models and the locally constant model from Polzehl and Spokoiny (2002) by means of simulated and real data sets using different forecasting criteria. Our results indicate that the simple locally constant model outperforms the other models in almost all cases. The GARCH(1,1) model also demonstrates a relatively good forecasting performance as far as the short term forecasting horizon is considered. However, its application to long term forecasting seems questionable because of possible misspecification of the model parameters.
The critical exponent(s) for the semilinear fractional diffusive equation
Creators: name: D'Abbicco, Marcello
name: Ebert, Marcelo Rempel
name: Picon, Tiago Henrique
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper we show that there exist two different critical exponents for global small data solutions to the semilinear fractional diffusive equation with Caputo fractional derivative in time. The second critical exponent appears if the second data is assumed to be zero. This peculiarity is related to the fact that the order of the equation is fractional. To prove our result, we first derive Lr-Lq linear estimates for the solution to the inhomogeneous linear Cauchy problem and then we apply a contraction argument.
Much ado about Derrida's GREM
Creators: name: Bovier, Anton
name: Kurkova, Irina
Publisher: name: Weierstrass Institute
Year: 2004
Subjects: subject: Gaussian processes
subject: spin-glasses
subject: Generalised random energy model
subject: Poisson point processes
subject: branching processes
subject: coalescence
subject: 82B44

description: We provide a detailed analysis of Derrida's Generalised Random Energy Model (GREM). In particular, we describe its limiting Gibbs measure in terms Ruelle's Poisson cascades. Next we introduce and analyse a more general class of Continuous Random Energy Models (CREMs) which differs from the well-known class of Sherrington-Kirkpatrick models only in the choice of distance on the space of spin configurations : the Hamming distance defines the later class while the ultrametric distance corresponds to the former one. We express explicitly the geometry of its limiting Gibbs measure in terms of genealogies of Neveu's Continuous State branching Process via an appropriate time change. We also identify the distances between replicas under the limiting CREM's Gibbs measure with those between integers of Bolthausen-Sznitman coalescent under the same time change.
Enhanced Symmetries in Multiparameter Flux Vacua
Creators: name: DeWolfe, Oliver
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a construction of type IIB flux vacua with discrete R-symmetries and vanishing superpotential for hypersurfaces in weighted projective space with any number of moduli. We find that the existence of such vacua for a given space depends on properties of the modular group, and for Fermat models can be determined solely by the weights of the projective space. The periods of the geometry do not in general have arithmetic properties, but live in a vector space whose properties are vital to the construction.
description: 32 pages, LaTeX. v2: references added
Magnon transport and spin current switching through quantum dots
Creators: name: Strelcyk, Olaf
name: Korb, Thomas
name: Schoeller, Herbert
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the nonequilibrium spin current through a quantum dot consisting of two localized spin-1/2 coupled to two ferromagnetic insulators. The influence of an intra-dot magnetic field and exchange coupling, different dot-reservoir coupling configurations, and the influence of magnon chemical potential differences vs. magnetic field gradients onto the spin current are examined. We discuss various spin switching mechanisms and find that, in contrast to electronic transport, the spin current is very sensitive to the specific coupling configuration and band edges. In particular, we identify 1- and 2-magnon transport processes which can lead to resonances and antiresonances for the spin current.
description: 10 pages, 15 figures