cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bumblebee gravity with a Kerr-Sen-like solution and its Shadow
Creators: name: Jha, Sohan Kumar
name: Rahaman, Anisur
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Lorentz-Violating (LV) scenario gets involved through a bumblebee field vector field $B_μ$. A spontaneous symmetry breaking allows the field to acquires a vacuum expectation value that generates LV into the system. A Kerr-Sen-like solution has been found out starting from the generalized form of a radiating stationery axially symmetric black-hole metric. We compute the effective potential offered by the null geodesics in the bumblebee rotating black-hole spacetime. The shadow has been sketched for different variations of the parameters involved in the system. A careful investigation has been carried out to study how the shadow gets affected when Lorentz violation enters into the picture. The emission rate of radiation has also been studied and how it varies with the LV parameter $\ell$ is studied scrupulously.
description: 14 pages latex, 23 figures
Quantization of fields based on Generalized Uncertainty Principle
Creators: name: Matsuo, Toshihiro
name: Shibusa, Yuuichirou
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a quantum theory of free scalar field in 1+1 dimensions based on a `Generalized Uncertainty Principle'. Both canonical and path integral formalism are employed. Higher dimensional extension is easily performed in the path integral formalism.
description: 17pages, 2figures
ERC Locus Ludi. Jouer dans l'Antiquité. Exposition Lugdunum, musée & théâtres romains.
Creators: name: Dasen Véronique
Publisher: name: Zenodo
Year: 2019

description: The exhibition Ludique. Jouer dans l'antiquité, in Lyon, Lugdunum, June 20-december 1, 2019, is part of the ERC Advanced Grant Locus Ludi. The Cultural Fabric of Play and Games in Classical Antiquity. Over 300 Greek and roman objects, anthropological parallels from north Africa, and the reception of Antiquity in todays' ludic culture. More to see: https://locusludi.ch ©photo : Milène Jallais/Lugdunum.
Current distribution and giant magnetoimpedance in composite wires with helical magnetic anisotropy
Creators: name: Buznikov, N. A.
name: Antonov, A. S.
name: Granovsky, A. B.
name: Kim, C. G.
name: Kim, C. O.
name: Li, X. P.
name: Yoon, S. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The giant magnetoimpedance effect in composite wires consising of a non-magnetic inner core and soft magnetic shell is studied theoretically. It is assumed that the magnetic shell has a helical anisotropy. The current and field distributions in the composite wire are found by means of a simultaneous solution of Maxwell equations and the Landau-Lifshitz equation. The expressions for the diagonal and off-diagonal impedance are obtained for low and high frequencies. The dependences of the impedance on the anisotropy axis angle and the shell thickness are analyzed. Maximum field sensitivity is shown to correspond to the case of the circular anisotropy in the magnetic shell. It is demonstrated that the optimum shell thickness to obtain maximum impedance ratio is equal to the effective skin depth in the mahnetic material.
description: 23 pages, 7 figures
Semantic elicitation: Bare noun interpretation
Creators: name: Koech, Nicholas Kipchumba
name: Bossi, Madeline
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: tuy

description: One .mp4 file and one .pdf file. Elicitation of mass nouns and singular and plural count nouns and their various interpretations (e.g. generic, existential, definite).
Regression to the Tail: Why the Olympics Blow Up
Creators: name: Flyvbjerg, Bent
name: Budzier, Alexander
name: Lunn, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Finance (q-fin.GN)
subject: Risk Management (q-fin.RM)
subject: FOS: Economics and business

description: The Olympic Games are the largest, highest-profile, and most expensive megaevent hosted by cities and nations. Average sports-related costs of hosting are $12.0 billion. Non-sports-related costs are typically several times that. Every Olympics since 1960 has run over budget, at an average of 172 percent in real terms, the highest overrun on record for any type of megaproject. The paper tests theoretical statistical distributions against empirical data for the costs of the Games, in order to explain the cost risks faced by host cities and nations. It is documented, for the first time, that cost and cost overrun for the Games follow a power-law distribution. Olympic costs are subject to infinite mean and variance, with dire consequences for predictability and planning. We name this phenomenon "regression to the tail": it is only a matter of time until a new extreme event occurs, with an overrun larger than the largest so far, and thus more disruptive and less plannable. The generative mechanism for the Olympic power law is identified as strong convexity prompted by six causal drivers: irreversibility, fixed deadlines, the Blank Check Syndrome, tight coupling, long planning horizons, and an Eternal Beginner Syndrome. The power law explains why the Games are so difficult to plan and manage successfully, and why cities and nations should think twice before bidding to host. Based on the power law, two heuristics are identified for better decision making on hosting. Finally, the paper develops measures for good practice in planning and managing the Games, including how to mitigate the extreme risks of the Olympic power law.
description: arXiv admin note: text overlap with arXiv:1607.04484
Second Data Release of the 6dF Galaxy Survey
Creators: name: Jones, D. Heath
name: Saunders, Will
name: Read, Mike
name: Colless, Matthew
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The 6dF Galaxy Survey is measuring around 150000 redshifts and 15000 peculiar velocities from galaxies over the southern sky at |b|>10 degrees. When complete, it will be the largest survey of its kind by more than an order of magnitude. Here we describe the characteristics of the Second Incremental Data Release (DR2) and provide an update of the survey. This follows earlier data made public in December 2002 and March 2004. A total of 83014 sources now have their spectra, redshifts, near-infrared and optical photometry available online and searchable through an SQL database at http://www-wfau.roe.ac.uk/6dFGS/.
description: 11 pages, 7 figures. Submitted to PASA. High resolution versions of the figures can be obtained from http://www.aao.gov.au/local/www/6df/Publications
Electroweak $t \bar t$ hadroproduction in the presence of heavy $Z'$ and $W'$ bosons at NLO QCD in POWHEG
Creators: name: Altakach, Mohammad Mahdi
name: Ježo, Tomáš
name: Klasen, Michael
name: Lang, Jean-Nicolas
name: Schienbein, Ingo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We extend and improve upon our previous calculation of electroweak top-quark pair hadroproduction in extensions of the Standard Model with extra heavy neutral and charged spin-1 resonances. In particular, we allow for flavour-non-diagonal $Z'$ couplings and take into account non-resonant production in the SM and beyond including the contributions with $t$-channel $W$ and $W'$ bosons. All amplitudes are generated using the Recola2 package. As in our previous work, we include NLO QCD corrections and consistently match to parton showers with the POWHEG method fully taking into account the interference effects between SM and new physics amplitudes. We consider the Sequential Standard Model, the Topcolour model, as well as the Third Family Hypercharge Model featuring non-flavour-diagonal $Z'$ couplings which has been proposed recently to explain the anomalies in $B$ decays. We present numerical results for $t \bar t$ cross sections at hadron colliders with a centre-of-mass energy up to 100 TeV.
description: 25 pages, 8 figures, 1 table
การจัดการเรียนรู้เชิงรุกเพื่อการจัดการเรียนการสอนภาษาฝรั่งเศสในโรงเรียนมัธยมศึกษาในภาคใต้
Creators: name: เกศินี ชัยศรี
Publisher: name: สมาคมครูภาษาฝรั่งเศสแห่งประเทศไทย
Year: 2020
Subjects: การจัดการเรียนรู้เชิงรุก
ภาษาฝรั่งเศส
โรงเรียนมัธยมศึกษา
การเรียนการสอนภาษาฝรั่งเศส

description: วารสารสมาคมครูภาษาฝรั่งเศสแห่งประเทศไทย, 43, 140, 86-115
การพัฒนาหนังสือเรียนไวยากรณ์เบื้องต้นภาษาฝรั่งเศส โดยประยุกต์ใช้ทฤษฎีระบบนิเวศวิทยาของบรอนเฟนเบรนเนอร์ ผสมผสานเทคโนโลยีดิจิทัล
Creators: name: กิติศักดิ์ ภูมิภักดี
Publisher: name: สมาคมครูภาษาฝรั่งเศสแห่งประเทศไทย
Year: 2020
Subjects: ไวยากรณ์เบื้องต้นภาษาฝรั่งเศส
หนังสือเรียน
ทฤษฎีระบบนิเวศวิทยา
เทคโนโลยีดิจิทัล

description: วารสารสมาคมครูภาษาฝรั่งเศสแห่งประเทศไทย, 43, 140, 116-143
Compact X-ray Binaries in and out of Core Collapsed Globulars
Creators: name: Grindlay, Jonathan E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review new Chandra and HST observations of the core collapsed cluster NGC 6397 as a guide to understanding the compact binary (CB) populations in core collapse globulars. New cataclysmic variables (CVs) and main sequence chromospherically active binaries (ABs) have been identified, enabling a larger sample for comparison of the Lx, Fx/Fv and X-ray vs. optical color distributions. Comparison of the numbers of CBs with Lx >10^31 erg/s in 4 core collapse vs. 12 King model clusters reveals that the specific frequency Sx (number of CBs per unit cluster mass) is enhanced in core collapse clusters, even when normalized for their stellar encounter rate. Although core collapse is halted by the dynamical heating due to stellar (and binary) interaction with CBs in the core, we conclude that production of the hardest CBs -- especially CVs -- is enhanced during core collapse. NGC 6397 has its most luminous CVs nearest the cluster center, with two newly discovered very low luminosity (old, quiescent) CVs far from the core. The active binaries as well as neutron star systems (MSP and qLMXB) surround the central core. The overall CB population appears to be asymmetric about the cluster center, as in several other core collapse clusters observed with Chandra, suggesting still poorly-understood scattering processes.
description: 12 pages, 6 figures, invited talk at COSPAR Colloquium on "Spectra and Timing of Compact X-ray Binaries", Mumbai, India (Jan. 2005), to be published in journal: Advances in Space Research (Elsevier)
Blind children's representation of complex scenes in a narrative
Creators: name: Christe, Elizabeth
Publisher: name: University of British Columbia
Year: 2009

description: The main goal of this study was to determine how blind children conceptually represent the temporal and spatial relationships in the story, Frog, Where Are You? This was accomplished by examining the terms blind children used to express the temporal and spatial relations in narrating the complex scenes and events in the story. A secondary objective was to determine the global coherence of the children's narratives by analysing their use of tense in their narratives - specifically whether they chose to use an anchor tense — as well as their inclusion of the main plot components of the story. Final goals were to determine the extent to which the blind children used memorized clauses while retelling the story and how the results obtained from blind children compared with those from age-matched sighted children. The study involved audio taping five blind children and five age-matched sighted children's retelling of Frog, Where Are You? after they heard different versions of the story over the period of a week. The narratives were transcribed and analysed for temporal and spatial categories, anchor tense and plot units, and whether they contained clauses identical or close to the clauses in the written versions of the story. Results indicate that children in both groups grounded their narratives in an anchor tense and assigned a signalling function to rarer verb forms. Both groups used a large number of time expressions. The sighted children narrated more events as being simultaneous than did the blind children; however, there were no group differences on the comprehension questions. All the children also used a fair number of spatial markers, but these were rarely if ever used to relate the position of the two protagonists. Sighted children, rather than blind children, tended to overestimate distances. Sighted children included more plot components in their narratives than did blind children. Finally, the use of verbatim repetition of clauses was found to be higher in blind children's narratives. In summary, results show some differences, especially with regard to spatial concepts, in the narratives of blind and sighted children.
การศึกษาภาพรวมการวิจัยทางด้านการออกเสียงและการรับรู้เสียงภาษาฝรั่งเศสของผู้เรียนชาวไทย
Creators: name: ธีระ รุ่งธีระ
Publisher: name: สมาคมครูภาษาฝรั่งเศสแห่งประเทศไทย
Year: 2020
Subjects: การวิจัยการออกเสียง
การวิจัยการรับรู้เสียง
สัทศาสตร์และสัทวิทยาภาษา
ฝรั่งเศส
ผู้เรียนภาษาฝรั่งเศสชาวไทย

description: วารสารสมาคมครูภาษาฝรั่งเศสแห่งประเทศไทย, 43, 140, 144-160
Probing the cluster pressure profile with thermal Sunyaev-Zeldovich effect and weak lensing cross-correlation
Creators: name: Ma, Yin-Zhe
name: Gong, Yan
name: Troster, Tilman
name: Van Waerbeke, Ludovic
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We confront the universal pressure profile (UPP) proposed by~\citet{Arnaud10} with the recent measurement of the cross-correlation function of the thermal Sunyaev-Zeldovich (tSZ) effect from Planck and weak gravitational lensing measurement from the Red Cluster Sequence lensing survey (RCSLenS). By using the halo model, we calculate the prediction of $ξ^{y-κ}$ (lensing convergence and Compton-$y$ parameter) and $ξ^{y-γ_{\rm t}}$ (lensing shear and Compton-$y$ parameter) and fit the UPP parameters by using the observational data. We find consistent UPP parameters when fixing the cosmology to either WMAP 9-year or Planck 2018 best-fitting values. The best constrained parameter is the pressure profile concentration $c_{500}=r_{500}/r_{\rm s}$, for which we find $c_{500} = 2.68^{+1.46}_{-0.96}$ (WMAP-9) and $c_{500} = 1.91^{+1.07}_{-0.65}$ (Planck-2018) for the $ξ^{y-γ_t}$ estimator. The shape index for the intermediate radius region $α$ parameter is constrained to $α=1.75^{+1.29}_{-0.77}$ and $α= 1.65^{+0.74}_{-0.5}$ for WMAP-9 and Planck-2018 cosmologies, respectively. Propagating the uncertainties of the UPP parameters to pressure profiles results in a factor of $3$ uncertainty in the shape and magnitude. Further investigation shows that most of the signal of the cross-correlation comes from the low-redshift, inner halo profile ($r \leqslant r_{\rm vir}/2$) with halo mass in the range of $10^{14}$--$10^{15}\,{\rm M}_{\odot}$, suggesting that this is the major regime that constitutes the cross-correlation signal between weak lensing and tSZ.
description: 12 pages, 6 figures, accepted by Monthly Notices of the Royal Astronomical Society
The VVV Near-IR Galaxy Catalogue beyond the Galactic disk
Creators: name: Baravalle, Laura D.
name: Alonso, M. Victoria
name: Minniti, Dante
name: Castellón, José Luis Nilo
name: Soto, Mario
name: Valotto, Carlos
name: Villalón, Carolina
name: Graña, Darío
name: Amôres, Eduardo B.
name: Castro, F. Milla
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Knowledge about the large-scale distribution of galaxies is far from complete in the Zone of Avoidance, which is mostly due to high interstellar extinction and to source confusion at lower Galactic latitudes. Past near-infrared (NIR) surveys, such as the Two Micron All Sky Survey (2MASS), have shown the power of probing large-scale structure at these latitudes. Our aim is to map the galaxy distribution across the Southern Galactic plane using the VISTA Variables in the Vía Láctea Survey (VVV), which reach 2 to 4 magnitudes deeper than 2MASS. We used SExtractor + PSFEx to identify extended objects and to measure their sizes, the light concentration index, magnitudes, and colours. Morphological and colour constraints and visual inspection were used to confirm galaxies. We present the resulting VVV NIR Galaxy Catalogue of 5563 visually confirmed galaxies, of which only 45 were previously known. This is the largest catalogue of galaxies towards the Galactic plane, with 99% of these galaxies being new discoveries. We found that the galaxy density distribution closely resembled the distribution of low interstellar extinction of the existing NIR maps. We also present a description of the 185 2MASS extended sources observed in the region, of which 16% of these objects had no previous description, which we have now classified. We conclude that interstellar extinction and stellar density are the main limitations for the detection of background galaxies in the Zone of Avoidance. The VVV NIR Galaxy Catalogue is a new data set providing information for extragalactic studies in the Galactic plane.
description: Accepted for publication in Monthly Notices of the Royal Astronomical Society Main Journal 21 pages
Lippmann-Schwinger-Lanczos algorithm for inverse scattering problems
Creators: name: Druskin, Vladimir
name: Moskow, Shari
name: Zaslavsky, Mikhail
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Data-driven reduced order models (ROMs) are combined with the Lippmann-Schwinger integral equation to produce a direct nonlinear inversion method. The ROM is viewed as a Galerkin projection and is sparse due to Lanczos orthogonalization. Embedding into the continuous problem, a data-driven internal solution is produced. This internal solution is then used in the Lippmann-Schwinger equation, thus making further iterative updates unnecessary. We show numerical experiments for spectral domain domain data for which our inversion is far superior to the Born inversion and works as well as when the true internal solution is known.
title: Continuité des suivis en ergothérapie
title: exploration de la continuité des suivis en ergothérapie lorsque ceux-ci sont repris en ambulatoire à la sortie de l'Hôpital du Jura
titleType: Subtitle
title: Continuité des suivis en ergothérapie
titleType: AlternativeTitle
Creators: name: Blaser, Maève
name: Jolidon, Sophie
name: Steullet, Léonie
Publisher: name: Unknown
Year: 0
Subjects: subject: Ergothérapie
subject: Suivis post-hospitaliers
subject: Cabinets d'ergothérapie
subject: Collaboration pluridisciplinaire
subject: Organisation hospitalière et post-hospitalière
subject: Ambulatoire

description: Contexte : Les ergothérapeutes, travaillant en milieu hospitalier ou en ambulatoire, sont régulièrement amené·es à collaborer entre eux et avec d’autres professionnel·les de la santé. Notamment lorsqu’un·e patient·e est hospitalisé·e et a besoin de poursuivre son traitement en ergothérapie à son retour à domicile. Cette collaboration doit se faire de la meilleure manière par tous les acteur·trices gravitant autour du ou de la patient·e afin d’éviter une discontinuité de son suivi en ergothérapie. Buts : Ce travail a pour but d’identifier et de décrire les facteurs favorisant ou entravant le suivi des patient·es en ergothérapie, dans le canton du Jura, lorsqu’ils et elles sortent de l’hôpital et continuent leur traitement en ambulatoire ou à domicile. Méthode : Une étude qualitative de type descriptive est réalisée. À cette fin, des entretiens semi-dirigés ont été menés auprès de six ergothérapeutes travaillant à l’hôpital ou en cabinet. Deux infirmier·ères travaillant dans les soins à domicile ont également été interrogé·es. Résultats : Les données obtenues ont permis de mettre en lumière divers éléments favorisant ou entravant la continuité des suivis en ergothérapie avant, pendant et après l’hospitalisation. Les divers·es participant·es décrivent notamment un manque de temps et d’anticipation dans les sorties des patient·es, ce qui engendre un impact négatif sur l’organisation du suivi des personnes. Les patient·es étant également acteur·trices de leur suivi, peuvent aussi être un frein à un suivi optimal. Conclusion : De nombreux facteurs entravent la fluidité de la poursuite de suivi en ergothérapie des patient·es sortant de l’hôpital. Diverses propositions pouvant améliorer la continuité des suivis en ergothérapie ont été amenées au terme de ce travail. Selon les participant·es, introduire un protocole plus systématique lorsqu’un·e patient·e retourne à domicile améliorerait le suivi de la personne ainsi que la collaboration des professionnel·les entre eux et elles. Les médecins assument un rôle déterminant concernant les trajectoires de soin. Ils et elles n’ont pas donné suite à ce travail, mettant en lumière un des facteur entravant la continuité des suivis en ergothérapie.
Neutralino Dark Matter and Trilepton Searches in the MSSM
Creators: name: Hooper, Dan
name: Plehn, Tilman
name: Vallinotto, Alberto
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Searches for supersymmetry are among the most exciting physics goals at Run II of the Tevatron. In particular, in supersymmetric models with light charginos, neutralinos and sleptons, associated chargino--neutralino production can potentially be observed as multi-lepton events with missing energy. We discuss how, in the generic TeV-scale MSSM, the prospects for these chargino-neutralino searches are impacted by cosmological considerations, namely the neutralino relic abundance and direct detection limits. We also discuss what an observation of chargino-neutralino production at the Tevatron would imply for the prospects of future direct dark matter searches without assuming specific patterns of supersymmetry breaking.
description: 13 pages, 14 figures
Additional file 2 of Towards an integrated animal health surveillance system in Tanzania: making better use of existing and potential data sources for early warning surveillance
Creators: name: George, Janeth
name: Häsler, Barbara
name: Komba, Erick
name: Sindato, Calvin
name: Rweyemamu, Mark
name: Mlangwa, James
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Science Policy

description: Additional file 2.
The Circumstellar Environment of High Mass Protostellar Objects. III Evidence of Infall?
Creators: name: Fuller, G. A.
name: Williams, S. J.
name: Sridharan, T. K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The results are presented of a molecular line survey to search for the spectral signature of infall towards 77 850 micron continuum sources believed to be candidate high mass protostellar objects. Up to six different transitions, HCO+ 1-0, 3-2 and 4-3, H2CO 2_12-1_11, N2H+ and H13CO+ 3-2, were observed towards each source. Towards the peak of the 850 micron emission, N2H+ was typically strong, with a peak antenna temperature of ~1.5K, with a typical linewidth of ~2km/s. The good agreement between the velocity and velocity width of the N2H+ and H13CO+ emission suggests that both species are tracing similar material in the sources. With respect to the velocity of the N2H+, there is a statistically significant excess of blue asymmetric line profiles in both the HCO+ 1-0 and H2CO transitions. This excess reaches levels similar to that seen towards samples of low mass protostars, and suggests that the material around these high mass sources is infalling. We identify 22 promising candidate infall sources which show at least one blue asymmetric line profile and no red asymmetric profiles. The infall velocity is estimated to be in the range of 0.1 km/s to 1 km/s with an implied mass accretion rate of between 2x10^{-4} Msol/yr and 10^{-3}Msol/yr.
description: Accepted for publication in Astronomy and Astrophysics. Higher resolution versions of Figures 1 and 2 are available from http://www.jb.man.ac.uk/~gaf/Papers.html
Self-sustained price bubbles driven by Bitcoin innovations and adaptive behavior
Creators: name: Perepelitsa, Misha
name: Timofeyev, Ilya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: FOS: Economics and business

description: We show that infinite divisibility of a trading commodity leads to a self-sustained price bubble when traders use adaptive investment strategies. The adaptive strategy can be viewed as a psychological response of a trader to the situation when the trader's estimation of future prices does not match the actual, realized price. We use a multi-agent model to illustrate the price bubble formation and to quantify its main statistical properties such as the return, the volatility, and the systematic risk of the price bubble to crash. We discuss the plausibility for bubbles to drive prices of digital currencies.
Effect of hydrostatic pressure and longitudinal electric field on phase transitions and thermodynamic characteristics of quasione-dimensional CsH$_2$PO$_4$ ferroelectric
Creators: name: Vdovych, A. S.
name: Zachek, I. R.
name: Levitskii, R. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose a two-sublattice proton ordering model for the quasione-dimensional CsH$_2$PO$_4$ ferroelectric with hydrogen bonds, which takes into account linear on lattice strains $u_1$, $u_2$, $u_3$ and $u_5$ contribution to the energy of proton subsystem. The model also takes into account the dependence of effective dipole moments of pseudospins on the order parameters, which enables one to agree the effective dipole moments in paraelectric and ferroelectric phases. Within this model in two-particle cluster approximation on short-range interactions and in the mean field approximation on long-range interactions, there is investigated the behaviour of spontaneous polarization, longitudinal dielectric permittivity and molar heat capacity under the action of hydrostatic pressure and longitudinal electric field. The phase transition into antiferroelectric phase under high pressures is explained. The character of smearing of the paraelectric-ferroelectric phase transition as well as suppression of the antiferroelectric phase at the presence of electric field is studied.
description: 16 pages, 18 figures
Aphelinus mali group from China
Creators: name: Polaszek, Andrew
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 310401
subject: Animal systematics and taxonomy

description: The species of Aphelinus (Hymenoptera: Aphelinidae) are primary parasitoids of aphids (Hemiptera: Aphididae), playing an important role as biological control agents of aphid pests. The genus currently contains 99 described species. The mali-group is an important taxon within Aphelinus, however, identification of closely related species within the group has been problematic. Zehavi & Rosen (1989) first proposed and defined the mali-group based on characters of the body and leg colour, and, importantly, the fore wing with the linea calva bordered proximally with only one complete row of setae, and open posteriorly. Hopper et al. (2012) redefined the mali-group based on Zehavi & Rosen’s (1989) description, and supported by a combination of six characters. Where we follow Hopper et al. (2012) and summarize the present status of the mali-group. Three new species of the group are described below, and one species is reported new to China. An identification key for fifteen species (excluding two species with inadequate descriptions) of the mali-group is provided.
Quasi-local energy-momentum and energy flux at null infinity
Creators: name: Wu, Xiaoning
name: Chen, Chiang-Mei
name: Nester, James M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The null infinity limit of the gravitational energy-momentum and energy flux determined by the covariant Hamiltonian quasi-local expressions is evaluated using the NP spin coefficients. The reference contribution is considered by three different embedding approaches. All of them give the expected Bondi energy and energy flux.
description: 14 pages, accepted by Phys.Rev.D
VZ Sex: X-ray confirmation of its intermediate polar nature
Creators: name: Nucita, A. A.
name: De Paolis, F.
name: Licchelli, D.
name: Strafella, F.
name: Ingrosso, G.
name: Maiorano, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Intermediate polars are members of the cataclysmic variable binary stars. They are characterized by a moderately magnetized white dwarf accreting matter from a cool main-sequence companion star. In many cases, this accretion gives rise to a detectable $X$-ray emission. VZ Sex is an interesting $X$-ray source whose nature needs a robust confirmation. Here, we used archive $XMM$-Newton observation to assign the source to the intermediate polar class. We applied the Lomb-Scargle periodogram method to detect any relevant periodic feature in the $0.1$--$10$ keV light curve and performed a spectral fitting of the $X$-ray spectrum in order to get information on the on-going accretion mechanism. By inspecting the periodogram, we detected a clear periodic feature at $\simeq 20.3$ minutes that we interpret as the spin period of the white dwarf. We additionally found the typical side bands expected as the consequence of the beat between the spin and the orbital period of $\simeq 3.581$ hours. The source is characterized by a unabsorbed flux of $\simeq 2.98\times 10^{-12}$ erg cm$^{-2}$ s$^{-1}$ corresponding to an intrinsic luminosity {of $\simeq 7 \times 10^{31}$ erg s$^{-1}$ } {for a distance of $\simeq 433$ pc}. The existence of such features allow us to classify VZ Sex as a clear member of the intermediate polar class. Furthermore, with the estimated WD spin, the ratio $P_{spin}/P_{orb}$ is $\simeq 0.09$, i.e. consistent with that expected for a typical IP system above the period gap. In addition, the estimated intrinsic luminosity opens the possibility that a bridge linking the normally bright IPs to the faint population of sources does exist.
description: Accepted for publication on The Astrophysical Journal. 10 pages, 5 figures
Depression, Anxiety, and Stress among Medical Education Tutors: Issues for Academic Prospects
Creators: name: Abdullahi Sabo Muhammad
Publisher: name: Zenodo
Year: 2019

description: The present study has been conducted to determine the prevalence levels of Depression, Anxiety and Stress among medical educators in Kaduna Polytechnic, Kaduna, Nigeria. Five research questions and hypotheses were formulated to guide the study. A descriptive survey research design was utilized for the study. Simple random sampling technique was used to select the participants. The instrument for data collection was adapted from an internationally-developed tool used in various similar researches (DASS 21) constructed by Lovibond and Lovibond, (1995). The tool consists of three subscales with seven items each measured on 3-point rating format with different classification levels. The data were analyzed using both descriptive and inferential statistics. The results indicated that DAS prevalence levels were high among medical educators. There was a significant relationship among DAS with the respondents. While Depression and stress tend to be high among medical educators, anxiety tends not to be prevalent. Based on these findings, recommendations were made among which is to provide medical educators, counseling experts, and psychotherapists with information which is useful in planning, designing and strategizing interventions to effectively and efficiently deal with problems confronting students in our schools
The Nature Of Radio Continuum Emission At Very Low Metallicity: Very Large Array Observations of I Zw 18
Creators: name: Cannon, John M.
name: Walter, Fabian
name: Skillman, Evan D.
name: van Zee, Liese
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first resolved study of the radio continuum properties of I Zw 18, the dwarf galaxy with the lowest known nebular metal abundance in the local universe. New Very Large Array radio continuum images at 20 and 3.6 cm are compared to various Hubble Space Telescope images, and we find a striking morphological similarity between high-resolution H alpha and short wavelength radio continuum emission, especially in the H alpha shell in the northwest region. We separate thermal and nonthermal components of the emission, and find a large synchrotron halo surrounding the galaxy. Comparison between H alpha and X-band fluxes suggests that the emission at 3.6 cm is dominated by thermal processes; an additional synchrotron component dominates the flux at 20 cm and produces a modest fraction of the detected flux at 3.6 cm. The fluxes of three of the four major emission peaks show a mix of thermal and nonthermal processes, while one shows a nearly flat spectral index. The strong synchrotron component argues for active star formation throughout the disk for at least the last ~ 30 Myr. These sensitive observations provide a new, detailed view of the nature of radio continuum emission in the very low metallicity interstellar medium. Comparing with the literature, the role of metallicity in the evolution of radio continuum emission seems to be secondary to other factors such as the recent star formation history and the presence or absence of outflows from star formation regions.
description: ApJ Letters, in press; full-resolution version available at http://www.mpia-hd.mpg.de/homes/cannon/pubs.html
Additional file 1 of Prevalence of problematic feeding in young children born prematurely: a meta-analysis
Creators: name: Pados, Britt Frisk
name: Hill, Rebecca R.
name: Yamasaki, Joy T.
name: Litt, Jonathan S.
name: Lee, Christopher S.
Publisher: name: figshare
Year: 2021
Subjects: subject: Neuroscience
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Figure 1. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) diagram of study source identification, screening, inclusion, and exclusion (with reasons).
Towards constraining warm dark matter with stellar streams through neural simulation-based inference
Creators: name: Hermans, Joeri
name: Banik, Nilanjan
name: Weniger, Christoph
name: Bertone, Gianfranco
name: Louppe, Gilles
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: A statistical analysis of the observed perturbations in the density of stellar streams can in principle set stringent contraints on the mass function of dark matter subhaloes, which in turn can be used to constrain the mass of the dark matter particle. However, the likelihood of a stellar density with respect to the stream and subhaloes parameters involves solving an intractable inverse problem which rests on the integration of all possible forward realisations implicitly defined by the simulation model. In order to infer the subhalo abundance, previous analyses have relied on Approximate Bayesian Computation (ABC) together with domain-motivated but handcrafted summary statistics. Here, we introduce a likelihood-free Bayesian inference pipeline based on Amortised Approximate Likelihood Ratios (AALR), which automatically learns a mapping between the data and the simulator parameters and obviates the need to handcraft a possibly insufficient summary statistic. We apply the method to the simplified case where stellar streams are only perturbed by dark matter subhaloes, thus neglecting baryonic substructures, and describe several diagnostics that demonstrate the effectiveness of the new method and the statistical quality of the learned estimator.
Threshold Resummation in Momentum Space from Effective Field Theory
Creators: name: Becher, Thomas
name: Neubert, Matthias
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Methods from soft-collinear effective theory are used to perform the threshold resummation of Sudakov logarithms for the deep-inelastic structure function F_2(x,Q^2) in the endpoint region x->1 directly in momentum space. An explicit all-order formula is derived, which expresses the short-distance coefficient function C in the convolution F_2=C*phi_q in terms of Wilson coefficients and anomalous dimensions defined in the effective theory. Contributions associated with the physical scales Q^2 and Q^2(1-x) are separated from non-perturbative hadronic physics in a transparent way. A crucial ingredient to the momentum-space resummation is the exact solution to the integro-differential evolution equation of the jet function, which is derived. The methods developed in this Letter can be applied to many other hard QCD processes.
description: 4 pages, 1 figure. Version to appear in PRL
On toric varieties which are almost set-theoretic complete intersections
Creators: name: Barile, Margherita
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 14M25; 14M10; 19F27

description: We describe a class of affine toric varieties $V$ that are set-theoretically minimally defined by codim $V+1$ binomial equations over fields of any characteristic.
2022 LEADING Fellow Capstone Presentation
Creators: name: Jones, Jamaica
Publisher: name: Zenodo
Year: 2023
Subjects: Science of science
National Science Foundation
Scientometrics
Science Policy
Research Repositories

description: This presentation shares a capstone review of fellowship research performed across the National Science Foundation's Public Access Repository (PAR). The findings shared represent the results of a first-ever external assessment of the scope and extent of the PAR, focusing specifically on the length of time from publication to PAR deposit as well as on inclusion rates across DOI, ORCID and award identifier metadata. Findings show a majority of publications being deposited in PAR within one year of publication and mixed results relative to persistent identifier inclusion.
The DendroEcological Network: A cyberinfrastructure to facilitate the use of tree-ring and ecological data to answer ecological questions
Creators: name: Rayback, Shelly
name: Duncan, James
name: Kosiba, Alexandra
name: Schaberg, Paul
name: Murakami, Paula
name: Hansen, Christopher
Publisher: name: F1000 Research Limited
Year: 2019

description: This poster introduces the DendroEcological Network (DEN), an open-source repository of high quality dendrochronological and associated ecological data.
Optical properties of LaNiO3 films tuned from compressive to tensile strain
Creators: name: Ardizzone, I.
name: Zingl, M.
name: Teyssier, J.
name: Strand, H. U. R.
name: Peil, O.
name: Fowlie, J.
name: Georgescu, A. B.
name: Catalano, S.
name: Bachar, N.
name: Kuzmenko, A. B.
name: Gibert, M.
name: Triscone, J. -M.
name: Georges, A.
name: van der Marel, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Materials with strong electronic correlations host remarkable -- and technologically relevant -- phenomena such as magnetism, superconductivity and metal-insulator transitions. Harnessing and controlling these effects is a major challenge, on which key advances are being made through lattice and strain engineering in thin films and heterostructures, leveraging the complex interplay between electronic and structural degrees of freedom. Here we show that the electronic structure of LaNiO3 can be tuned by means of lattice engineering. We use different substrates to induce compressive and tensile biaxial epitaxial strain in LaNiO3 thin films. Our measurements reveal systematic changes of the optical spectrum as a function of strain and, notably, an increase of the low-frequency free carrier weight as tensile strain is applied. Using density functional theory (DFT) calculations, we show that this apparently counter-intuitive effect is due to a change of orientation of the oxygen octahedra.The calculations also reveal drastic changes of the electronic structure under strain, associated with a Fermi surface Lifshitz transition. We provide an online applet to explore these effects. The experimental value of integrated spectral weight below 2 eV is significantly (up to a factor of 3) smaller than the DFT results, indicating a transfer of spectral weight from the infrared to energies above 2 eV. The suppression of the free carrier weight and the transfer of spectral weight to high energies together indicate a correlation-induced band narrowing and free carrier mass enhancement due to electronic correlations. Our findings provide a promising avenue for the tuning and control of quantum materials employing lattice engineering.
description: 12 pages, 11 figures
Fach Plus Didaktik: Schulbuchdarstellungen als Brücken ins Fach
Creators: name: Rödel, Michael
name: Hüttemann, Maurice
name: Schatz, Sandra
Publisher: name: Lehrerbildung@LMU
Year: 2021

description: In der Fachdidaktik gehört die Auseinandersetzung mit Schulbüchern in Forschung und Lehre zum Tagesgeschäft. Dass auch die fachwissenschaftliche Lehre davon profitieren kann, zeigt dieser Beitrag anhand zweier Beispiele aus der germanistischen Sprachwissenschaft. Schulbuchdarstellungen können Studierenden gerade in den ersten Semestern Brücken ins Fach bauen. Sie verdeutlichen die Relevanz fachwissenschaftlicher Inhalte für das Lehramtsstudium und dienen zugleich als Folie, von der sich die fachwissenschaftliche Betrachtungsweise absetzt. Aus der Reflexion dieses Spannungsfeldes führen Wege in die Fachdidaktik.
description: Lehrerbildung@LMU, Bd. 1 Nr. 2 (2021): Lehrerbildung@LMU
Giants on Deformed Backgrounds Part II: The Gauge Field Fluctuations
Creators: name: Pirrone, Marco
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the full bosonic spectrum around giant and dual giant graviton probes in exactly marginally deformed backgrounds. Considering supersymmetric and non-supersymmetric three-parameter deformations of AdS_5 X S^5, we perform a detailed analysis of small fluctuations for both the expanded D3-brane configurations. In particular, we enhance the scalar spectra of frequencies found in our previous paper hep-th/0609173 with the important contributions brought by the gauge field fluctuations. The giant graviton case exhibits a non-trivial coupling between scalar and vector modes driven by the deformation, whose resolution yields to a universal correction of the undeformed spectrum. On the other hand, dual giant vibrations turn out to be completely decoupled. From our results one can also easily read the gauge field fluctuations in the undeformed (dual) giant graviton scenario.
description: LaTex, 20 pages, 3 figures, uses JHEP3
Social inequality and the policies of water in the Sao Paulo metropolitan area, Brazil: a study of urban environmental politics through a case study of the Guarapiranga reservoir recovery program
Creators: name: Castro, Erika Maria Teresa Giongo De Camargo
Publisher: name: University of British Columbia
Year: 2009

description: This research examines the politics that shape the urban environment in Sao Paulo Metropolitan Area. In particular, it inquires into the potential of international agencies as significant players in major infrastructure projects. It discusses a World Bank project for environment recovery of the Guarapiranga Reservoir, the second largest water supplier of the metropolitan area. This study demonstrates that social inequalities ingrained within developing societies are incorporated into urban politics, creating the physical dimension of social exclusion so prevalent in developing cities. In Sao Paulo, industrialization was associated with urban growth and worsening of environmental conditions. However, all of the metropolitan population did not equally share these conditions. It is the poor who have the burden of living in the midst of pollution and in risky areas, subject to flooding and sliding. This situation is more acute around the Guarapiranga reservoir, where outdated legislation to protect water sources made the low value of land attractive to low-income populations. It was there that the poor found a place for the only housing arrangements they could afford: illegal settlements and favelas, without adequate infrastructure or basic services. The role played by the World Bank was expected to alter this long-standing situation by addressing the roots of the physical exclusion of the urban poor. However, in spite of improvements in living conditions of some settlements around the reservoir, the World Bank Program has largely failed. The Program did not shift region's planning focus from technical goals to a broader and holistic approach that could address social inequalities as well as the environment degradation associated with poor neighborhoods in sensitive areas.