cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dynamics of WIMPs in the solar system and implications for direct and indirect detection
Creators: name: Peter, Annika H. G.
name: Tremaine, Scott
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Semi-analytic treatments of the evolution of orbits of weakly interacting massive particles (WIMPs) in the solar system suggest that the WIMPs bound to the solar system may enhance the direct detection rate relative to that of the unbound population by up to a factor of order unity, and boost the flux of neutrinos from WIMP annihilation in the Earth by up to two orders of magnitude. To test these important but uncertain results, we perform a suite of numerical orbit integrations to explore the properties of the bound WIMP population as a function of the WIMP mass and the scattering cross section with baryonic matter. For regions of WIMP parameter space presently allowed by experiments, we find that (i) the bound WIMP population enhances the direct detection rate by at most ~1% relative to the rate from unbound halo WIMPs; (ii) it is unlikely that planned km^3-scale neutrino telescopes will detect neutrinos from WIMP annihilation in the Earth; (iii) the event rate from neutrinos produced by WIMP annihilation in the Sun may be much smaller than implied by the usual calculations, which assume that WIMPs scattered onto bound orbits are rapidly thermalized in the Sun.
description: 4 pages, 1 figure, to appear in the IDM2008 conference proceedings
Evolutionary view through the starless cores in Taurus: deuteration in TMC 1-C and TMC 1-CP
Creators: name: Navarro-Almaida, D.
name: Fuente, A.
name: Majumdar, L.
name: Wakelam, V.
name: Caselli, P.
name: Rivière-Marichalar, P.
name: Treviño-Morales, S. P.
name: Cazaux, S.
name: Jiménez-Serra, I.
name: Kramer, C.
name: Chacón-Tanarro, A.
name: Kirk, J. M.
name: Ward-Thompson, D.
name: Tafalla, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The chemical and physical evolution of starless and pre-stellar cores are of paramount importance to understanding the process of star formation. The Taurus Molecular Cloud cores TMC 1-C and TMC 1-CP share similar initial conditions and provide an excellent opportunity to understand the evolution of the pre-stellar core phase. We investigated the evolutionary stage of starless cores based on observations towards the prototypical dark cores TMC 1-C and TMC 1-CP, mapping them in the CS $3\rightarrow 2$, C$^{34}$S $3\rightarrow 2$, $^{13}$CS $2\rightarrow 1$, DCN $1\rightarrow 0$, DCN $2\rightarrow 1$, DNC $1\rightarrow 0$, DNC $2\rightarrow 1$, DN$^{13}$C $1\rightarrow 0$, DN$^{13}$C $2\rightarrow 1$, N$_2$H$^+$ $1\rightarrow 0$, and N$_2$D$^+$ $1\rightarrow 0$ transitions. We performed a multi-transitional study of CS and its isotopologs, DCN, and DNC lines to characterize the physical and chemical properties of these cores. We studied their chemistry using the state-of-the-art gas-grain chemical code Nautilus and pseudo time-dependent models to determine their evolutionary stage. Observational diagnostics seem to indicate that TMC 1-C is in a later evolutionary stage than TMC 1-CP, with a chemical age $\sim$1 Myr. TMC 1-C shows signs of being an evolved core at the onset of star formation, while TMC 1-CP appears to be in an earlier evolutionary stage due to a more recent formation or, alternatively, a collapse slowed down by a magnetic support.
description: 26 pages, 10 figures
Link between laboratory and astrophysical radiative shocks
Creators: name: Michaut, Claire
name: Falize, Emeric
name: Cavet, Cécile
name: Bouquet, Serge
name: Koenig, Michel
name: Vinci, Tommaso
name: Loupias, Bérénice
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This work provides analytical solutions describing the post-shock structure of radiative shocks growing in astrophysics and in laboratory. The equations including a cooling function $Λ\propto ρ^ε P^ζ x^θ$ are solved for any values of the exponents $ε$, $ζ$ and $θ$. This modeling is appropriate to astrophysics as the observed radiative shocks arise in optically thin media. In contrast, in laboratory, radiative shocks performed using high-power lasers present a radiative precursor because the plasma is more or less optically thick. We study the post-shock region in the laboratory case and compare with astrophysical shock structure. In addition, we attempt to use the same equations to describe the radiative precursor, but the cooling function is slightly modified. In future experiments we will probe the PSR using X-ray diagnostics. These new experimental results will allow to validate our astrophysical numerical codes.
title: Front Matter, Table of Contents, Preface, Program Committee, List of Authors
Creators: name: Mernik, Marjan
name: Leal, José Paulo
name: Gonçalo Oliveira, Hugo
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2016
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Program Committee
subject: List of Authors

description: Front Matter, Table of Contents, Preface, Program Committee, List of Authors
description: OASIcs, Vol. 51, 5th Symposium on Languages, Applications and Technologies (SLATE'16), pages 0:i-0:xiv
In vivo Macromolecular Crystallography
Creators: name: Chavas, Leonard
Publisher: name: Zenodo
Year: 2021

description: The identification of protein crystals naturally occurring inside cells and organisms has opened a window for a new type of macromolecular crystallography (MX) and structural biology, referred to as in vivo MX. In the past decade, efforts were provided in getting deeper insights into the yet uncontrollable events dictating in vivo crystal growth, by further developing sample handling and delivery procedures and applying these techniques to the structure determination and analysis of readily available ivMX systems. To facilitate the use of ivMX by the larger community, milestones for the implementation of a complete pipeline has been set at Synchrotron SOLEIL (France). In the current presentation, I will be introducing the hows and whys of ivMX, the basics behind the platform and the promising results obtained when applied to the studies of the SARS-CoV-2 pathogen responsible of the CoViD-19.
Europa w kryzysie? Ruch oburzonych w krótkim spojrzeniu politologa
Creators: name: Scheffs, Łukasz
Publisher: name: Zenodo
Year: 2014
Subjects: europa
ue
eu
politologia
polityka

description: Europa w kryzysie? Ruch oburzonych w krótkim spojrzeniu politologa Unia Europejska: politologiczno-socjologiczno-ekonomiczny ogród, 2014 Antkowiak, Ł. Scheffs, Europa w kryzysie? Ruch oburzonych w krótkim spojrzeniu politologa, w: Unia Europejska: politologiczno-socjologiczno-ekonomiczny ogród, red. C. Trosiak, Poznań 2014, ss. 215-221, ISBN 978-83-62907-53-3.
The vanishing-off subgroup
Creators: name: Lewis, Mark L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Group Theory (math.GR)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20C15

description: In this paper, we define the vanishing-off subgroup of a nonabelian group. We study the structure of the quotient of this subgroup and a central series obtained from this subgroup.
description: Fixed typos. Also, fixed an error in Theorem 3
Symmetry potentials and in-medium nucleon-nucleon cross sections within the Nambu-Jona-Lasinio model in relativistic impulse approximation
Creators: name: Wei, Si-Na
name: Yang, Rong-Yao
name: Ye, Jing
name: Li, Niu
name: Jiang, Wei-Zhou
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In the relativistic impulse approximation (RIA), we study symmetry potentials and in-medium nucleon-nucleon (NN) cross sections with the Nambu-Jona-Lasinio (NJL) model that features chiral symmetry. The chiral symmetry that plays a fundamental role in the nonperturbative physics in the strong interaction is anticipated to add restrictive effects on the symmetry potentials and in-medium NN cross sections. For comparison, we also perform the study with the usual relativistic mean-field (RMF) model. The numerical results with the NJL and RMF models are similar at saturation density and below, since a priori fit was made to saturation properties. With the increase of nuclear density, the chiral symmetry starts to be restored partially in the NJL model, resulting in the explicit fall of the scalar density. In a large energy span, the symmetry potential acquires a significant rise for the partial restoration of the chiral symmetry, compared to the one with the RMF model. It is found that the in-medium NN cross sections in the RIA with the NJL and RMF models both increase with the density in the energy region interested in this study, whereas those with the NJL model increase sharply as long as a clear chiral symmetry restoration takes place. The different tendency of observables in density can be transmitted to the different energy dependence in the RIA. The NJL model is shown to have characteristic energy-dependent symmetry potentials and NN cross sections beyond saturation point, apart from the RMF models.
Gemeinsam den digitalen Kulturraum der Zukunft gestalten - Potenziale von offenen Kulturdaten und Co-Creation
Creators: name: Euler, Ellen
Publisher: name: Zenodo
Year: 2021
Subjects: open access
open data
open GLAM
Co-Creation
Public Domain
Coding da Vinci
Hackathon

description: Impuls anlässlich der Preisverleihung Coding da Vinci Niedersachsen Coding da Vinci, der Kultur-Hackathon, vernetzt die Kultur- und die Technikwelt miteinander. Auch in Niedersachsen hat sich einmal mehr gezeigt, welche überraschenden Möglichkeiten in offenen Kulturdaten stecken. Neue Zugänge zu unserem digitalen Kulturerbe wurden mit Apps, Websites, VR/AR-Umsetzungen, interaktiven Installationen, Datenvisualisierungen geschaffen. Zum Programm und Hintergrund und den wahnsinnig tollen Projekten siehe: https://codingdavinci.de/de/events/niedersachsen-2020 Anlässlich der Preisverleihung am 29.01.2021 habe ich eine Keynote gehalten. Diese wurde gestreamt und die Aufzeichnung findet sich bei Youtube: https://youtu.be/1NrFbMcUBZs Keynote ab Stunde 2:57:50 Die Folien stelle ich als pptx mit einer Transkription in den Notizen zur Verfügung und ebenso als pdf zum durchklicken. Viel Spaß damit und vor allem schaut Euch die tollen Projekte, die mit einem Preis ausgezeichnet worden sind noch an! Alle Projekte des Coding da Vinci findet ihr mit Datensets zum Basteln hier: https://codingdavinci.de/de/projekte/
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Borndörfer, Ralf
name: Storandt, Sabine
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2018
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization

description: Front Matter, Table of Contents, Preface, Conference Organization
description: OASIcs, Vol. 65, 18th Workshop on Algorithmic Approaches for Transportation Modelling, Optimization, and Systems (ATMOS 2018), pages 0:i-0:x
The two INTEGRAL X-ray transients IGR J17091--3624 and IGR J17098--3628: a multi-wavelength long term campaign
Creators: name: Capitanio, F.
name: Giroletti, M.
name: Molina, M.
name: Bazzano, A.
name: Tarana, A.
name: Kennea, J.
name: Dean, A. J.
name: Hill, A. B.
name: Tavani, M.
name: Ubertini, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: IGR J17091-3624 and IGR J17098-3628 are two X-ray transients discovered by INTEGRAL and classified as possible black hole candidates (BHCs). We present here the results obtained from the analysis of multi-wavelength data sets collected by different instruments from 2005 until the end of 2007 on both sources. IGR J17098-3628 has been regularly detected by INTEGRAL and RXTE over the entire period of the observational campaign; it was also observed with pointed observations by XMM and Swift/XRT in 2005 and 2006 and exhibited flux variations not linked with the change of any particular spectral features. IGR J17091-3624 was initially in quiescence (after a period of activity between 2003 April and 2004 April) and it was then detected again in outburst in the XRT field of view during a Swift observation of IGR J17098--3628 on 2007 July 9. The observations during quiescence provide an upper limit to the 0.2-10 keV luminosity, while the observations in outburst cover the transition from the hard to the soft state. Moreover, we obtain a refined X-ray position for IGR J17091-3624 from the Swift/XRT observations during the outburst in 2007. The new position is inconsistent with the previously proposed radio counterpart. We identify in VLA archive data a compact radio source consistent with the new X-ray position and propose it as the radio counterpart of the X-ray transient.
description: Accepted for publication in ApJ
Properties of BC$_6$N monolayer derived by first-principle computation: Influences of interactions between dopant atoms
Creators: name: Abdullah, Nzar Rauf
name: Abdullah, Botan Jawdat
name: Tang, Chi-Shung
name: Gudmundsson, Vidar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The properties of graphene-like BC$_6$N semiconductor are studied using density functional theory taking into account the attractive interaction between B and N atoms. In the presence of a strong attractive interaction between B and N dopant atoms, the electron charge distribution is highly localized along the B-N bonds, while for a weaker attractive interaction the electrons are delocalized along the entire hexagonal ring of BC$_6$N. Furthermore, when both B and N atoms are doped at the same site of the hexagon, the breaking of the sub-lattice symmetry is low producing a small bandgap. In contrast, if the dopant atoms are at different sites, a high sub-lattice symmetry breaking is found leading to a large bandgap. The influences of electron localization/delocalization and the tunable bandgap on thermal behaviors such as the electronic thermal conductivity, the Seebeck coefficient, and the figure of merit, and optical properties such as the dielectric function, the excitation spectra, the refractive index, the electron energy loss spectra, the reflectivity, and the optical conductivity are presented. An enhancement with a red shift of the optical conductivity at low energy range is seen while a reduction at the high energy range is found indicating that the BC$_6$N structure may be useful for optoelectronic devices in the low energy, visible range.
description: 9 pages with including 11 figures
Edge states, mass and spin gaps, and quantum Hall effect in graphene
Creators: name: Gusynin, V. P.
name: Miransky, V. A.
name: Sharapov, S. G.
name: Shovkovy, I. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Motivated by recent experiments and a theoretical analysis of the gap equation for the propagator of Dirac quasiparticles, we assume that the physics underlying the recently observed removal of sublattice and spin degeneracies in graphene in a strong magnetic field is connected with the generation of both Dirac masses and spin gaps. The consequences of such a scenario for the existence of the gapless edge states with zigzag and armchair boundary conditions are discussed. In the case of graphene on a half-plane with a zigzag edge, there are gapless edge states in the spectrum only when the spin gap dominates over the mass gap. In the case of an armchair edge, however, the existence of the gapless edge states depends on the specific type of mass gaps.
description: 14 pages, 7 figures
Syntactic abilities : the use of the TSA screening test with selected sub-pupulations of hearing-impaired students
Creators: name: Anderson, John Lloyd
Publisher: name: University of British Columbia
Year: 2010

description: In the Spring of 1978, the Screening Test (Form 1 s 2) of the Test of Syntactic Abilities was administered to a large hearing-impaired population for the first time. Performance scores were collected from a British Columbian sample of 233 prelingually hearing-impaired students between the ages of eight and nineteen years, who were enrolled in a public school or a school for the deaf. Examination of these data showed the two forms of the test to be parallel, possess good content validity, and high reliability for all nine syntactic structures and total screen scores. Reliability remained high when results were examined for different hearing loss categories (<59, 60-89, >90 dB). As the severity of hearing loss increased from mild to profound, scores decreased significantly, but there was a marked increase in the discriminating power of the screens. These results indicate that while the test was valid for the severely and profoundly deaf, its use with mildly or moderately hearing-impaired students is questionable. Two way analysis of variance showed that performance differed significantly among age groups for the syntactic structure, conjunction; and among hearing loss groups for determiners, question formation, pronominalization, relativization, complementation and nominalization. Correlations were moderate to strong between the screen variables and the diagnostic test of the Test of Syntactic Abilities. Such consistently high correlations suggested the existence of a common underlying language factor, which while permitting the test to provide an accurate measure of syntactic functioning may prevent it from discriminating strengths and weaknesses in individual structures.
Electroweak Gauge-Higgs Unification Scenario
Creators: name: Hosotani, Yutaka
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the gauge-Higgs unification scenario 4D Higgs fields are unified with gauge fields in higher dimensions. The electroweak model is constructed in the Randall-Sundrum warped space. The electroweak symmetry is dynamically broken by the Hosotani mechanism due to the top quark contribution. The Higgs mass is predicted to be around 50 GeV with the vanishing ZZH and WWH couplings so that the LEP2 bound for the Higgs mass is evaded.
description: 6 pages, 1 figure, proceeding for SUSY08
The Challenge of Sub-Keplerian Rotation for Disk Winds
Creators: name: Shu, Frank H.
name: Lizano, Susana
name: Galli, Daniele
name: Cai, Mike J.
name: Mohanty, Subhanjoy
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Strong magnetization makes the disks surrounding young stellar objects rotate at rates that are too sub-Keplerian to enable the thermal launching of disk winds from their surfaces unless the rate of gas diffusion across field lines is dynamically fast. This under-appreciated implication of disk magnetization poses a considerable challenge for disk-wind theory.
description: 4 pages, accepted by ApJL
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Brandner, Florian
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2018
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization

description: Front Matter, Table of Contents, Preface, Conference Organization
description: OASIcs, Vol. 63, 18th International Workshop on Worst-Case Execution Time Analysis (WCET 2018), pages 0:i-0:x
Wavefunctionology: The Special Structure of Certain Fractional Quantum Hall Wavefunctions
Creators: name: Simon, Steven H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Certain fractional quantum Hall wavefunctions -- particularly including the Laughlin, Moore-Read, and Read-Rezayi wavefunctions -- have special structure that makes them amenable to analysis using an exeptionally wide range of techniques including conformal field theory (CFT), thin cylinder or torus limit, study of symmetric polynomials and Jack polynomials, and so-called ``special" parent Hamiltonians. This review discusses these techniques as well as explaining to what degree some other quantum Hall wavefunctions share this special structure. Along the way we will explore the physics of quantum Hall edges, entanglement spectra, quasiparticles, nonabelian braiding statistics, and Hall viscosity, among other topics. As compared to a number of other recent reviews, most of this review is written so as to {\it not} rely on results from conformal field theory -- although a short discussion of a few key relations to CFT are included near the end.
description: 59 pages
Miðeind's WMT 2021 submission
Creators: name: Símonarson, Haukur Barri
name: Snæbjarnarson, Vésteinn
name: Ragnarsson, Pétur Orri
name: Jónsson, Haukur Páll
name: Þorsteinsson, Vilhjálmur
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: We present Miðeind's submission for the English$\to$Icelandic and Icelandic$\to$English subsets of the 2021 WMT news translation task. Transformer-base models are trained for translation on parallel data to generate backtranslations iteratively. A pretrained mBART-25 model is then adapted for translation using parallel data as well as the last backtranslation iteration. This adapted pretrained model is then used to re-generate backtranslations, and the training of the adapted model is continued.
The triple Leidenfrost effect: preventing drops coalescence on a hot plate
Creators: name: Pacheco-Vazquez, F.
name: Palacio-Rangel, J. L.
name: Ledesma-Alonso, R.
name: Moreau, F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We report on the collision-coalescence dynamics of drops in Leidenfrost state using liquids with different physicochemical properties. Drops of the same liquid deposited on a hot concave surface coalesce practically at contact, but when drops of different liquids collide, they can bounce several times before finally coalescing when the one that evaporates faster reaches a critical size, of the order of the capillary length. The bouncing dynamics is produced because the drops are not only in Leidenfrost state with the substrate, they also experience Leidenfrost effect between them at the moment of collision. This happens due to their different boiling temperatures, and therefore, the hotter drop works as a hot surface for the drop with lower boiling point, producing three contact zones of Leidenfrost state simultaneously. We called this scenario the triple Leidenfrost effect.
description: 5 pages, 5 figures
Two insulating phases in compressed Pr1-xCaxMnO3 thin films
Creators: name: Filippi, M.
name: Prellier, W.
name: Auban-Senzier, P.
name: Pasquier, C. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The temperature dependent resistivity of two Pr1-xCaxMnO3 (x=0.5 and 0.4) thin films grown on LaAlO3 has been studied as a function of hydrostatic pressure (up to 2.5 GPa) and magnetic field (up to 9T). Both samples show a monotonic decrease in the resistivity with an increase in pressure, corresponding to a change of -35% at 2.5 GPa. No pressure induced metal-to-insulator transition was observed in the temperature-dependent resistivity. The non-trivial interaction between high pressure and magnetic field reveals that the effect of pressure cannot be simply rescaled to that of a specific field, as has been reported for the corresponding bulk material. We propose an interpretation of the data based on phase separation, where two different insulating phases coexist: the charge ordered phase, which is sensitive to both magnetic field and pressure, and a second insulating phase that can be tuned by magnetic field. Such a result demonstrates that phase separation can be manipulated in thin films by independent application of magnetic field and/or external pressure.
description: 9 pages, 3 figuresn submitted to Applied Physics Letters
Towards the description of anisotropic plasma at strong coupling
Creators: name: Janik, Romuald A.
name: Witaszczyk, Przemyslaw
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We initiate a study of anisotropic plasma at strong coupling using the AdS/CFT correspondence. We construct an exact dual geometry which represents a static uniform but anisotropic system and find, that although it is singular, it allows for a notion of `incoming' boundary conditions. We study small fluctuations around this background and find that the dispersion relation depends crucially on the direction of the wave-vector relative to the shape of the anisotropy reminiscent of similar behaviour at weak coupling. We do not find explicit instabilities to the considered order but only a huge difference in the damping behaviour.
description: 17 pages; v2: ref. added
Critical behavior driven by the confining potential in optical lattices with ultra-cold fermions?
Creators: name: Campo, V. L.
name: Quintanilla, J.
name: Hooley, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A recent paper [V. L. Campo et. al., Phys. Rev. Lett. 99, 240403 (2007) has proposed a two-parameter scaling method to determine the phase diagram of the fermionic Hubbard model from optical lattice experiments. Motivated by this proposal, we investigate in more detail, the behavior of the ground-state energy per site as a function of trap size(L) and confining potential (V(x) = t(x/L)^alpha) in the one-dimensional case. Using the BALDA-DFT method, we find signatures of critical behavior as alpha goes to infinity.
description: 4 pages, 4 Postscript figures, uses elsart5p.cls, elsart.cls, submitted as proceeding to SCES-08 (Strongly Correlated Electron Systems Meeting of 2008)
Language-Independent Approach for Automatic Computation of Vowel Articulation Features in Dysarthric Speech Assessment
Creators: name: Liu, Yuanyuan
name: Penttilä, Nelly
name: Ihalainen, Tiina
name: Lintula, Juulia
name: Convey, Rachel
name: Räsänen, Okko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Imprecise vowel articulation can be observed in people with Parkinson's disease (PD). Acoustic features measuring vowel articulation have been demonstrated to be effective indicators of PD in its assessment. Standard clinical vowel articulation features of vowel working space area (VSA), vowel articulation index (VAI) and formants centralization ratio (FCR), are derived the first two formants of the three corner vowels /a/, /i/ and /u/. Conventionally, manual annotation of the corner vowels from speech data is required before measuring vowel articulation. This process is time-consuming. The present work aims to reduce human effort in clinical analysis of PD speech by proposing an automatic pipeline for vowel articulation assessment. The method is based on automatic corner vowel detection using a language universal phoneme recognizer, followed by statistical analysis of the formant data. The approach removes the restrictions of prior knowledge of speaking content and the language in question. Experimental results on a Finnish PD speech corpus demonstrate the efficacy and reliability of the proposed automatic method in deriving VAI, VSA, FCR and F2i/F2u (the second formant ratio for vowels /i/ and /u/). The automatically computed parameters are shown to be highly correlated with features computed with manual annotations of corner vowels. In addition, automatically and manually computed vowel articulation features have comparable correlations with experts' ratings on speech intelligibility, voice impairment and overall severity of communication disorder. Language-independence of the proposed approach is further validated on a Spanish PD database, PC-GITA, as well as on TORGO corpus of English dysarthric speech.
description: 16 pages
Comment on "Ferroelectrically Induced Weak Ferromagnetism by Design", C. Fennie, PRL 100, 167203 (2008)
Creators: name: de Sousa, Rogerio
name: Moore, Joel E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The question of how ferroelectric polarization is coupled to magnetism in magnetoelectric multiferroics, in which both types of order are simultaneously present, is of considerable scientific and practical interest. A recent Letter \cite{fennie} presents an analysis of the important ``ABO$_3$'' class of perovskite multiferroics. This Letter argues that antiferromagnetic multiferroics with magnetic ions on the B site, such as the well-studied room-temperature multiferroic bismuth ferrite (A=Bi, B=Fe), cannot show linear magnetoelectric coupling of the form ${\bf P} \cdot ({\bf L} \times {\bf M})$. Here ${\bf P}$ is polarization and ${\bf L}$ and ${\bf M}$ are antiferromagnetic and ferromagnetic moments. The conclusion of Ref. \onlinecite{fennie} is that only materials with magnetic A-site have this coupling. This Comment presents a compact analysis of magnetoelectric coupling in the ABO$_3$ multiferroics. We show that the argument of Ref. \onlinecite{fennie} does forbid $E_{PLM}$ if the final low-symmetry phase contains only one distortion that, like ${\bf P}$, breaks all inversion symmetries. In reality, there are multiple distortions in this symmetry class, and cross-terms generate $E_{PLM}$. Our analysis gives simple conclusions about existence and optimization of magnetoelectric coupling in ABO$_3$ materials.
description: Published version (4 pages, including supplementary information)
Dense electron-hole plasma in silicon light emitting diodes
Creators: name: Altukhov, P. D.
name: Kuzminov, E. G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Efficient electroluminescence of silicon light emitting p-n diodes with different sizes and shapes is investigated at room temperature. High quantum efficiency of the diodes, a long linear dependence of the electroluminescence intensity on the diode current and a low energy shift of the emission line in electroluminescence spectra with increasing diode current are explained by the self-compression of injected electron-hole plasma into dense electron-hole plasma drops. Experiments on space scanning of the electroluminescence intensity of the diodes support this conclusion. The plasma self-compression is explained by existence of an attraction in electron-hole plasma, compensating the plasma pressure. A decrease of the semiconductor energy gap due to a local lattice overheating, produced by the plasma, and the exchange-correlation interaction could contribute to this attraction. The self-focusing of the injection current can accompany the plasma self-compression.
description: 7 pages, 4 figures, submitted to Journal of Physics: Condensed Matter, accepted for publication in Journal of Physics: Condensed Matter 29 September 2008
Nonvanishing Local Scalar Invariants even in VSI Spacetimes with all Polynomial Curvature Scalar Invariants Vanishing
Creators: name: Page, Don N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: VSI (`vanishing scalar invariant') spacetimes have zero values for all total scalar contractions of all polynomials in the Riemann tensor and its covariant derivatives. However, there are other ways of concocting local scalar invariants (nonpolynomial) from the Riemann tensor that need not vanish even in VSI spacetimes, such as Cartan invariants. Simple examples are given that reduce to the squared amplitude for a linearized monochromatic plane gravitational wave. These nonpolynomial local scalar invariants are also evaluated for non-VSI spacetimes such as Schwarzschild and Kerr and are estimated near the surface of the earth. Similar invariants are defined for null fluids and for electromagnetic fields.
description: 9 pages, LaTeX, proofread version accepted 2009 January 14 for publication in Classical and Quantum Gravity
Hidden entanglement at the Planck scale: loss of unitarity and the information paradox
Creators: name: Arzano, Michele
name: Hamma, Alioscia
name: Severini, Simone
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss how relaxing the requirement of locality for quantum fields can equip the Hilbert space of the theory with a richer structure in its multi-particle sector. A physical consequence is the emergence of a "planckian" mode-entanglement, invisible to an observer that cannot probe the Planck scale. To the same observer, certain unitary processes would appear non-unitary. We show how entanglement transfer to the additional degrees of freedom can provide a potential way out of the black hole information paradox.
description: 5 pages, RevTeX, no figures
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Pirovano, Edoardo
name: Graversen, Eva
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2019
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization

description: Front Matter, Table of Contents, Preface, Conference Organization
description: OASIcs, Vol. 66, 2018 Imperial College Computing Student Workshop (ICCSW 2018), pages 0:i-0:x
Conceptual tempo and auditory-visual temporal-spatial integration
Creators: name: Rattan, Gurmal
Publisher: name: University of British Columbia
Year: 2010

description: This study explored variations of audio-visual information integration patterns and their relation to conceptual tempo in a sample of 93 grade four children. All subjects were given nine combinations of audiovisual integration (AVI) tasks as well as the Matching Familiar Figures Test. The resultant data was analysed to discover the extent to which the conceptual tempo dimension is related to information processing patterns. Of particular interest is the question of whether differences in reading achievement may be traced, in part, to differences in information processing practices. A multivariate analysis indicated no significant difference between the four tempo groups (reflectives, slow inaccurates, fast accurates, and impulsives) on any of the AVI tasks. A one way ANOVA from a post-hoc analysis, however, indicated that reflectives and impulsives differentiated significantly on the reading measure used (Gates-MacGinitie) and that significant correlations existed between reading and eight of the nine AVI tasks. This indicated that while a significant relationship existed between reading (vocabulary and comprehension) and AVI tasks (p<.01), and that reflectives and impulsives differentiated significantly (p<.01) on reading, there was no differentiation on any of the AVI tasks. Reasons and implications of these findings are discussed.
Rotating states for trapped bosons in an optical lattice
Creators: name: Lundh, Emil
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Rotational states for trapped bosons in an optical lattice are studied in the framework of the Hubbard model. Critical frequencies are calculated and the main parameter regimes are identified. Transitions are observed from edge superfluids to vortex lattices with Mott insulating cores, and subsequently to lattices of interstitial vortices. The former transition coincides with the Mott transition. Changes in symmetry of the vortex lattices are observed as a function of lattice depth. Predictions for experimental signatures are presented.
description: 6 pages, 6 figures, accepted for publication in EPL
A comparative analysis of IoT service composition approaches
Creators: name: Aoudia, Idir
name: Benharzallah, Saber
name: Kahloul, Laid
name: Kazar, Obka
Publisher: name: figshare
Year: 2021
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: The Internet of things is the integration of information space and physical space, becoming more and more popular in several places. A number of approaches to IoT’s service composition have been proposed. In this paper, we will present a review of existing approaches for IoT’s service composition; it describes and compares them among each other with respect to some key requirements. This paper also presents some basic concepts to introduce IoT challenges with a comparison between traditional Web service composition and IoT service composition. This paper represents a support for researchers to focus on their efforts and to deliver lasting solutions in this field.
VIZSLA -- Versatile Ice Zigzag Sublimation Setup for Laboratory Astrochemistry
Creators: name: Bazsó, Gábor
name: Csonka, István Pál
name: Góbi, Sándor
name: Tarczay, György
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: In this article a new, multi-functional, high-vacuum astrophysical ice setup, VIZSLA (Versatile Ice Zigzag Sublimation Setup for Laboratory Astrochemistry), is introduced. The instrument allows the investigation of astrophysical processes both in a low-temperature para-H2 matrix and in astrophysical analog ices. In para-H2 matrix the reaction of astrochemical molecules with H atoms and H+ ions can be studied very effectively. For the investigation of astrophysical analog ices the setup is equipped with different irradiation and particle sources: an electron gun, for modeling cosmic rays; an H atom beam source (HABS); a microwave H atom lamp, for generating H Lyman-alpha radiation, and a tunable (213 nm to 2800 nm) laser source. For analysis, an FT-IR (and a UV-Visible) spectrometer and a quadrupole mass analyzer are available. The setup has two cryostats, offering novel features for analysis. Upon the so-called temperature-programmed desorption (TPD) the molecules, desorbing from the first cryostat, can be mixed with Ar and can be deposited onto the substrate of the other cryostat. The well-resolved spectrum of the molecules isolated in an Ar matrix serves a unique opportunity to identify the desorbing products of a processed ice. Some examples are provided to show how the para-H2 matrix experiments and the TPD -- matrix-isolation recondensation experiments can help to understand astrophysically important chemical processes at a low temperature. It is also discussed, how these experiments can complement the studies carried out by similar astrophysical ice setups.
description: 37 pages, 14 figures, 1table
Control the high-order harmonics cutoff through the combination of chirped laser and static electric field
Creators: name: Xiang, Yang
name: Niu, Yueping
name: Gong, Shangqing
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The high harmonic generation from atoms in the combination of chirped laser pulse and static field is theoretically investigated. For the first time, we explore a further physical mechanism of the significant extension of high harmonic generation cutoff based on three-step model. It is shown that the cutoff is substantially extended due to the asymmetry of the combined field. If appropriate parameters are chosen, the cutoff of high harmonic generation can reach Ip+42Up. Furthermore, an ultrabroad super-continuum spectrum can be generated. When the phases are properly compensated for, an isolated 9 attosecond pulse can be obtained.
description: 7 pages 5figures
The $Ω_{cc}$ resonances with negative parity in the chiral constituent quark model
Creators: name: Wang, Jin-Bao
name: Li, Gang
name: Deng, Cheng-Rong
name: An, Chun-Sheng
name: Xie, Ju-Jun
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Spectrum of the low-lying $Ω_{cc}$ resonances with negative parity, which are assumed to be dominated by $sccq\bar{q}$ pentaquark components, is investigated using the chiral constituent quark model. Energies of the $Ω_{cc}$ resonances are obtained by considering the hyperfine interaction between quarks by exchanging Goldstone boson. Possible $sccq\bar{q}$ configurations with spin-parity $1/2^{-}$, $3/2^{-}$ and $5/2^{-}$ are taken into account. Numerical results show that the lowest $Ω_{cc}$ resonances with negative parity may lie at $4050 \pm 100$ MeV. In addition, the transitions of the $Ω_{cc}$ resonance to a pseudoscalar meson and a ground baryon state are also investigated within the chiral Lagrangian approach. We expect that these $Ω_{cc}$ resonances could be observed in the $\bar{D}Ξ_{c}$ channel by future experiments.
description: typos corrected
The Magnetothermal Instability in the Intracluster Medium
Creators: name: Parrish, Ian J.
name: Stone, James M.
name: Lemaster, M. Nicole
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The electron mean free path in the intracluster medium (ICM) of galaxy clusters is much larger than the gyroradius; thus, heat is transported anisotropically along magnetic field lines. We show that the intracluster medium is unstable to the magnetothermal instability (MTI) using MHD simulations with anisotropic thermal conduction. As a result of the MTI, we find that the temperature profile of the ICM can be substantially modified on timescales of several billion years while the magnetic field is amplified by dynamo action up to more than fifty times the original energy. We also show that the instability drives field lines to become preferentially radial leading to conduction that is a highly efficient fraction of the Spitzer conductivity. As such, we present the first self-consistent calculation of the effective thermal conductivity in the ICM.
description: Submitted to ApJ
Coupled SDW and Superconducting Order in FFLO State of CeCoIn$_5$
Creators: name: Miyake, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The mechanism of incommensurate (IC) spin-density-wave (SDW) order observed in the Flude-Ferrell-Larkin-Ovchinnikov (FFLO) phase of CeCoIn$_5$ is discussed on the basis of new mode-coupling scheme among IC-SDW order, two superconducting orders of FFLO with B$_{1{\rm g}}$ ($d_{x^{2}-y^{2}}$) symmetry and $π$-pairing of odd-parity. Unlike the mode-coupling schemes proposed by Kenzelmann et al, Sciencexpress, 21 August (2008), that proposed in the present Letter can offer a simple explanation for why the IC-SDW order is observed only in FFLO phase and the IC wave vector is rather robust against the magnetic field.
description: 3pages, 1 figure, accepted for publication in J. Phys. Soc. Jpn., Vol.77 (2008), No.12
Strong lensing by subhalos in the dwarf-galaxy mass range I: Image separations
Creators: name: Zackrisson, E.
name: Riehm, T.
name: Moeller, O.
name: Wiik, K.
name: Nurmi, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The cold dark matter scenario predicts that a large number of dark subhalos should be located within the halo of each Milky-way sized galaxy. One tell-tale signature of such dark subhalos could be additional milliarcsecond-scale image splitting of quasars previously known to be multiply-imaged on arcsecond scales. Here, we estimate the image separations for the subhalo density profiles favoured by recent N-body simulations, and compare these to the angular resolution of both existing and upcoming observational facilities. We find, that the image separations produced are very sensitive to the exact subhalo density profile assumed, but in all cases considerably smaller than previous estimates based on the premise that subhalos can be approximated by singular isothermal spheres. Only the most optimistic subhalo models produce image separations that would be detectable with current technology, and many models produce image separations that will remain unresolved with all telescopes expected to become available in the foreseeable future. Detections of dark subhalos through image-splitting effects will therefore be far more challenging than currently believed, albeit not necessarily impossible.
description: 7 pages, 3 figures, accepted for publication in ApJ
Spin-charge interconversion in KTaO$_3$ two-dimensional electron gases
Creators: name: Vicente-Arche, Luis M.
name: Bréhin, Julien
name: Varotto, Sara
name: Cosset-Cheneau, Maxen
name: Mallik, Srijani
name: Salazar, Raphaël
name: Noël, Paul
name: Vaz, Diogo Castro
name: Trier, Felix
name: Bhattacharya, Suvam
name: Sander, Anke
name: Fèvre, Patrick Le
name: Bertran, François
name: Saiz, Guilhem
name: Ménard, Gerbold
name: Bergeal, Nicolas
name: Barthélémy, Agnès
name: Li, Hai
name: Lin, Chia-Ching
name: Nikonov, Dmitri E.
name: Young, Ian A.
name: Rault, Julien
name: Vila, Laurent
name: Attané, Jean-Philippe
name: Bibes, Manuel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Oxide interfaces exhibit a broad range of physical effects stemming from broken inversion symmetry. In particular, they can display non-reciprocal phenomena when time reversal symmetry is also broken, e.g., by the application of a magnetic field. Examples include the direct and inverse Edelstein effects (DEE, IEE) that allow the interconversion between spin currents and charge currents. The DEE and IEE have been investigated in interfaces based on the perovskite SrTiO$_3$ (STO), albeit in separate studies focusing on one or the other. The demonstration of these effects remains mostly elusive in other oxide interface systems despite their blossoming in the last decade. Here, we report the observation of both the DEE and IEE in a new interfacial two-dimensional electron gas (2DEG) based on the perovskite oxide KTaO$_3$. We generate 2DEGs by the simple deposition of Al metal onto KTaO$_3$ single crystals, characterize them by angle-resolved photoemission spectroscopy and magnetotransport, and demonstrate the DEE through unidirectional magnetoresistance and the IEE by spin-pumping experiments. We compare the spin-charge interconversion efficiency with that of STO-based interfaces, relate it to the 2DEG electronic structure, and give perspectives for the implementation of KTaO$_3$ 2DEGs into spin-orbitronic devices.