cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Critical Analysis of Universality and Kirchhoff's Law: A Return to Stewart's Law of Thermal Emission
Creators: name: Robitaille, Pierre-Marie
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: It has been advanced, on experimental (P.-M. Robitaille, IEEE Trans. Plasma Sci. 2003, v. 31(6), 1263-1267) and theoretical (P.M. Robitaille, Progr. Phys. 2006, v.2, 22-23) grounds, that blackbody radiation is not universal and remains closely linked to the emission of graphite and soot. In order to strengthen such claims, a conceptual analysis of the proofs for universality is presented. This treatment reveals that Gustav Robert Kirchhoff has not properly considered the combined effects of absorption, reflection, and the directional nature of emission in real materials. In one instance, this leads to an unintended movement away from thermal equilibrium within cavities. Using equilibrium arguments, it is demonstrated that the radiation within perfectly reflecting or arbitrary cavities does not necessarily correspond to that emitted by a blackbody.
Polarization of the Corona Observed During the 2017 and 2019 Total Solar Eclipses
Creators: name: Hanaoka, Yoichiro
name: Sakai, Yoshiaki
name: Takahashi, Koichi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We carried out polarimetric observations of the white-light corona during the total solar eclipses that occurred on 2017 August 21 and 2019 July 2, and successfully obtained data at two different sites for both eclipses. After eliminating the sky background, we derived the brightness, polarization brightness, and degree of the polarization of the K+F corona from just above the limb to approximately 4 $R_\odot$. Furthermore, we isolated the K- and F-corona with plausible degree of polarization of the K-corona. The field of view covering up to approximately 4 $R_\odot$ enabled us to compare the derived brightness and polarization with a wide range of other observations. The results of the comparison show significant scatter; while some of the observations present very good coincidence with our results, the other ones exhibit systematic discrepancy.
description: 25 pages, 11 figures
Machine Learning Emulation of 3D Cloud Radiative Effects
Creators: name: Meyer, David
name: Hogan, Robin J.
name: Dueben, Peter D.
name: Mason, Shannon L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The treatment of cloud structure in numerical weather and climate models is often greatly simplified to make them computationally affordable. Here we propose to correct the European Centre for Medium-Range Weather Forecasts 1D radiation scheme ecRad for 3D cloud effects using computationally cheap neural networks. 3D cloud effects are learned as the difference between ecRad's fast 1D Tripleclouds solver that neglects them and its 3D SPARTACUS (SPeedy Algorithm for Radiative TrAnsfer through CloUd Sides) solver that includes them but is about five times more computationally expensive. With typical errors between 20 % and 30 % of the 3D signal, neural networks improve Tripleclouds' accuracy for about 1 % increase in runtime. Thus, rather than emulating the whole of SPARTACUS, we keep Tripleclouds unchanged for cloud-free parts of the atmosphere and 3D-correct it elsewhere. The focus on the comparably small 3D correction instead of the entire signal allows us to improve predictions significantly if we assume a similar signal-to-noise ratio for both.
description: Published version
IMPROVING UROLOGY REFERRALS FOR PROSTATE EXAMINATIONS
Creators: name: Jump, Jacklyn
Publisher: name: Zenodo
Year: 2019

description: According to research and local data, there is a need to improve urology referrals for prostate examinations. Identified barriers to proper urology referrals include contradictory guidelines, confusing decision-making aids, and providers’ knowledge deficit. A Delphi panel consisting of four multidisciplinary physicians from internal medicine, radiation oncology, surgical pathology, and urology in the Los Angeles area were recruited to obtain consensus feedback. The Delphi panel ranked existing ProstateSpecific Antigen (PSA) screening guidelines in this order: American Urological Association’s guideline first, American Cancer Society second, and American Society of Clinical Oncology third. They agreed on the importance of PSA value interpretation staying consistent with current urological practices today and emphasized the importance of identifying risk factors for prostate cancer. Although only one of four physicians on the panel used a tool for calculating life expectancy, all agreed on PSA screening in the 50-59 age group, and two of four also included age groups 40-49, 60-69, and 70-79. Future implications include pilot testing this updated PSA testing tool, which incorporates user-centered design with local primary care providers (PCPs) as a reliable decision-making aid to help improve urology referrals for prostate examinations thereby saving cost, time, and lives.
The Nature of the Ultraluminous Oxygen-Rich Supernova Remnant in NGC 4449
Creators: name: Milisavljevic, Dan
name: Fesen, Robert
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Optical images and spectra, both ground based and taken by Hubble Space Telescope (HST), of the young, luminous O-rich supernova remnant in the irregular galaxy NGC 4449 are presented. HST images of the remnant and its local region were obtained with the ACS/WFC using filters F435W, F555W, F814W (B, V, and I, respectively), F502N ([O III]), F658N (Halpha + [N II]), F660N ([N II]), and F550M (line-free continuum). These images show an unresolved remnant (FWHM < 0.05 arcsec) located within a rich cluster of OB stars which itself is enclosed by a nearly complete interstellar shell seen best in Halpha + [N II] emission approximately 8'' x 6'' (150 pc x 110 pc) in size. The remnant and its associated OB cluster are isolated from two large nearby H II regions. The ACS [O III] image shows the remnant may be partially surrounded by a clumpy ring of emission approximately 1'' (~20 pc) in diameter. Recent ground-based spectra of the remnant reveal (1) the emergence of broad, blueshifted emission lines of [S II] 6716, 6731, [Ar III] 7136, and [Ca II] 7291, 7324 which were not observed in spectra taken in 1978 -- 1980; (2) faint emission at 6540 -- 6605 A centered about Halpha and [N II] 6548, 6583 with an expansion velocity of 500 +/- 100 km/s; and (3) excess emission around 4600 -- 4700 A suggestive of a Wolf-Rayet population in the remnant's star cluster. We use these new data to re-interpret the origin of the remnant's prolonged and bright luminosity and propose that the remnant is strongly interacting with dense, circumstellar wind loss material from a ~20 Msolar progenitor star.
description: 20 pages, 10 figures. Matches version published in ApJ
Young radio-loud gamma-ray pulsar light-curve fitting
Creators: name: Pétri, J.
name: Mitra, D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Observing simultaneously pulsed radio and gamma-ray emission from these stars helps to constrain the geometry and radiation mechanisms within their magnetosphere and to localize the multiple photon production sites. In this paper, we fit the time-aligned gamma-ray light-curves of young radio-loud gamma-ray pulsars. We assume a dipole force-free magnetosphere where radio photons emanate from high altitude above the polar caps and gamma-rays originate from outside the light-cylinder, within the striped wind current sheet. We compute a full atlas of radio and gamma-ray pulse profiles depending on the magnetic axis obliquity and line of sight inclination with respect to the neutron star rotation axis. By applying a $\rchi^2$ fitting technique, we are able to pin down accurately the magnetosphere geometry. Further constrains are obtained from radio polarization measurement following the rotating vector model, including aberration and retardation effects. We found a good agreement between our model and the time-aligned single or double peaked gamma-ray pulsar observations. We deduce the magnetic inclination angle and the observer line of sight with respect to the rotation axis within a small error bar. The distinction between radio-loud or radio-quiet gamma-ray pulsars or only radio pulsars can entirely be related to the geometry of the associated emitting regions. The high altitude polar cap model combined with the striped wind represents a minimalistic approach able to reproduce a wealth of gamma-ray pulse profiles for young radio pulsars. Based on self-consistent force-free simulations, it gives a full geometrical picture of the emission properties without resorting to detailed knowledge of the individual particle dynamics and energetics.
description: Recommended for publication in Astronomy & Astrophysics
Evolution of accretion disc reflection spectra due to a Type I X-ray burst
Creators: name: Speicher, J.
name: Ballantyne, D. R.
name: Fragile, P. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Irradiation of the accretion disc causes reflection signatures in the observed X-ray spectrum, encoding important information about the disc structure and density. A Type I X-ray burst will strongly irradiate the accretion disc and alter its properties. Previous numerical simulations predicted the evolution of the accretion disc due to an X-ray burst. Here, we process time-averaged simulation data of six time intervals to track changes in the reflection spectrum from the burst onset to just past its peak. We divide the reflecting region of the disc within $r\lesssim50$ km into 6-7 radial zones for every time interval and compute the reflection spectra for each zone. We integrate these reflection spectra to obtain a total reflection spectrum per time interval. The burst ionizes and heats the disc, which gradually weakens all emission lines. Compton scattering and bremsstrahlung rates increase in the disc during the burst rise, and the soft excess at $
description: 9 pages, 10 figures, accepted for publication in MNRAS
StatCan'sData Analytics as a Service Platform
Creators: name: McLellan, Robert
Publisher: name: Zenodo
Year: 2019
Subjects: metadata
NADDI2019

description: StatCan is following a modernization strategy with important outcomes for access and collaboration. Our Data Analytics as a Service Platform will deliver the building blocks to create solutions that support our goals. The adoption and use of standards is a key success factor for our goals and platform. Metadata capture, search, and discovery is critical – “if you can’t find it, can’t understand it” you can’t use it. Data lifecycle management with provenance and lineage becomes even more important with significant growth in data sources, data types, and data sharing to power the future of NSO’s and research. We are looking to engage real users to provide input to our user-centric design process. We would like to engage with other agencies and groups pursuing similar goals.
CHANG-ES XXIII: Influence of a galactic wind in NGC 5775
Creators: name: Heald, G. H.
name: Heesen, V.
name: Sridhar, S. S.
name: Beck, R.
name: Bomans, D. J.
name: Brüggen, M.
name: Chyży, K. T.
name: Damas-Segovia, A.
name: Dettmar, R. -J.
name: English, J.
name: Henriksen, R.
name: Ideguchi, S.
name: Irwin, J.
name: Krause, M.
name: Li, J. -T.
name: Murphy, E. J.
name: Nikiel-Wroczyński, B.
name: Piotrowska, J.
name: Rand, R. J.
name: Shimwell, T.
name: Stein, Y.
name: Vargas, C. J.
name: Wang, Q. D.
name: van Weeren, R. J.
name: Wiegert, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new radio continuum images of the edge-on starburst galaxy NGC 5775, from LOFAR (140 MHz) and the Karl G. Jansky Very Large Array CHANG-ES survey (1500 MHz). We trace the non-thermal radio halo up to 13 kpc from the disc, measuring the non-thermal spectral index and estimating the total equipartition magnetic field strength ($\approx13μ$G in the disc and $\approx7μ$G above the plane). The radio halo has a similar extent at both frequencies, displays evidence for localized cosmic ray streaming coinciding with prominent H$α$ filaments and vertical extensions of the regular magnetic field, and exhibits a boxy morphology especially at 140 MHz. In order to understand the nature of the disc-halo flow, we extend our previous model of cosmic ray propagation by implementing an iso-thermal wind with a tunable `flux tube' (approximately hyperboloidal) geometry. This updated model is successful in matching the vertical distribution of non-thermal radio emission, and the vertical steepening of the associated spectral index, in a consistent conceptual framework with few free parameters. Our new model provides the opportunity to estimate the mass outflow driven by the star formation process, and we find an implied rate of $\dot{M}\approx3-6\,\mathrm{M_{\odot}\,yr^{-1}}$ ($\approx40-80$ per cent of the star formation rate) if the escape velocity is reached, with substantial uncertainty arising from the poorly-understood distribution of ISM material entrained in the vertical flow. The wind may play a role in influencing the vertical gradient in rotational velocity.
description: Accepted for publication in MNRAS. 28 pages, 19 figures
Composition law for polarizers
Creators: name: Lages, J.
name: Giust, R.
name: Vigoureux, J. -M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The polarization process when polarizers act on an optical field is studied. We give examples for two kinds of polarizers. The first kind presents an anisotropic absorption - as in a polaroid film - and the second one is based on total reflection at the interface with a birefringent medium. Using the Stokes vector representation, we determine explicitly the trajectories of the wave light polarization during the polarization process. We find that such trajectories are not always geodesics of the Poincaré sphere as it is usually thought. Using the analogy between light polarization and special relativity, we find that the action of successive polarizers on the light wave polarization is equivalent to the action of a single resulting polarizer followed by a rotation achieved for example by a device with optical activity. We find a composition law for polarizers similar to the composition law for noncollinear velocities in special relativity. We define an angle equivalent to the relativistic Wigner angle which can be used to quantify the quality of two composed polarizers.
description: 23 pages, 9 figures, accepted for publication in Physical Review A
Extreme-Value Statistics of the Spin of Primordial Black Holes
Creators: name: Chongchitnan, Siri
name: Silk, Joseph
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: How rare are extreme-spin primordial black holes? We show how, from an underlying distribution of PBH spin, extreme-value statistics can be used to quantify the rarity of spinning PBHs with Kerr parameter close to 1. Using the Peaks-Over-Threshold method, we show how the probability that a PBH forms with spin exceeding a sufficiently high threshold can be calculated using the Generalised Pareto Distribution. This allows us to estimate the average number of PBHs amongst which we can find a single PBH which formed with spin exceeding a high threshold. We found that the primordial spin distribution gives rise to exceedingly rare near-extremal spin PBHs at formation time: for typical parameter values, roughly up to one in a hundred million PBHs would be formed with spin exceeding the Thorne limit. We discuss conditions under which even more extreme-spin PBHs may be produced, including modifying the skewness and kurtosis of the spin distribution via a smooth transformation. We deduce from our calculations that, if indeed asteroid-mass PBHs above the current observational limit on evaporating PBHs of mass ~10^{17} g contribute significantly to the dark matter, it is likely that some of them could be near-extremal PBHs.
description: 14 pages, 8 figures. Phys. Rev. D accepted
Perspektiven von Studierenden : Ergebnisse einer Befragung zu den Themen Politik, Religion und Gemeinschaft im Rahmen des Projektes "Radikalisierung im digitalen Zeitalter (RadigZ)"
Creators: name: Schröder, Carl Philipp
name: Goede, Laura-Romina
name: Lehmann, Lena
Publisher: name: Hannover Kriminologisches Forschungsinstitut Niedersachsen e.V. (KFN)
Year: 2020

description: Der Artikel unterliegt bis zum 01.01.2022 einem Embargo.
Detection of an H-alpha Emission Line on a Quasar, RX J1759.4+6638, at z=4.3 with AKARI
Creators: name: Oyabu, Shinki
name: Wada, Takehiko
name: Ohyama, Youichi
name: Matsuhara, Hideo
name: Takagi, Toshinobu
name: Nakagawa, Takao
name: Onaka, Takashi
name: Fujishiro, Naofumi
name: Ishihara, Daisuke
name: Ita, Yoshifusa
name: Kataza, Hirokazu
name: Kim, Woojung
name: Matsumoto, Toshio
name: Murakami, Hiroshi
name: Sakon, Itsuki
name: Tanabe, Toshihiko
name: Uemizu, Kazunori
name: Ueno, Munetaka
name: Usui, Fumihiko
name: Watarai, Hidenori
name: Haze, Kanae
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the detection of an H-alpha emission line in the low resolution spectrum of a quasar, RX J1759.4+6638, at a redshift of 4.3 with the InfraRed Camera (IRC) onboard the AKARI. This is the first spectroscopic detection of an H-alpha emission line in a quasar beyond z=4. The overall spectral energy distribution (SED) of RX J1759.4+6638 in the near- and mid-infrared wavelengths agrees with a median SED of the nearby quasars and the flux ratio of F(Ly-alpha)/F(H-alpha) is consistent with those of previous reports for lower-redshift quasars.
description: 9pages, 3 figures, Publications of the Astronomical Society of Japan, in press
Meine Gewaltaffinität, mein Interesse an Politik und meine Zukunftssicht? : Einflussfaktoren von extremistischen Einstellungen bei Jugendlichen
Creators: name: Lehmann, Lena
name: Goede, Laura-Romina
name: Schröder, Carl Philipp
Publisher: name: Universität Tübingen
Year: 2020

description: Der Artikel unterliegt bis zum 01.01.2022 einem Embargo.
Mathematical Model of Volume Kinetics and Renal Function after Burn Injury and Resuscitation
Creators: name: ArabiDarrehDor, Ghazal
name: Tivay, Ali
name: Bighamian, Ramin
name: Meador, Chris
name: Kramer, George C.
name: Hahn, Jin-Oh
name: Salinas, Jose
Publisher: name: arXiv
Year: 2021
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: This paper presents a mathematical model of blood volume kinetics and renal function in response to burn injury and resuscitation, which is applicable to the development and non-clinical testing of burn resuscitation protocols and algorithms. Prior mathematical models of burn injury and resuscitation are not ideally suited to such applications due to their limited credibility in predicting blood volume and urinary output observed in wide-ranging burn patients as well as in incorporating contemporary knowledge of burn pathophysiology. Our mathematical model consists of an established multi-compartmental model of blood volume kinetics, a hybrid mechanistic-phenomenological model of renal function, and novel lumped-parameter models of burn-induced perturbations in volume kinetics and renal function equipped with contemporary knowledge on burn-related physiology and pathophysiology. Using the dataset collected from 16 sheep, we showed that our mathematical model can be characterized with physiologically plausible parameter values to accurately predict blood volume kinetic and renal function responses to burn injury and resuscitation on an individual basis against a wide range of pathophysiological variability. Pending validation in humans, our mathematical model may serve as an effective basis for an in-depth understanding of complex burn-induced volume kinetic and renal function responses as well as development and non-clinical testing of burn resuscitation protocols and algorithms. Keywords: Mathematical Model, Burn Injury, Burn Resuscitation, Non-Clinical Testing, Burn Resuscitation Protocols, and Algorithms
description: Published in the Journal of Burns 24 Pages
Comments on "Y.-Q. Wang, et al., Commun. Nonlinear Sci. Numer. Simul. 103:105981 (2021)"
Creators: name: Ezaki, Takahiro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: With regard to the recently published article, ``Y.-Q. Wang, et al., Physical mechanism of equiprobable exclusion network with heterogeneous interactions in phase transitions: Analytical analyses of steady state evolving from initial state, Commun. Nonlinear Sci. Numer. Simul. 103:105981 (2021)'', the following concerns are raised. First, the given steady-state solution of the system, its proof, and derivation of relevant physical quantities are incorrect. Second, the presented simulation results were not replicated and significantly deviated from their analytical predictions. Finally, the second part of the article is irrelevant in the context of equiprobable exclusion networks because the examined system in this part does not possess equiprobable properties.
Identity at the Intersection of Gender and Religion among Mexican-American Women in Chicago Reading List
Creators: name: Sufian, Sandra
name: Sandahl, Carrie
name: Michel, Joanna
name: Vazquez-Melendez, Elsa
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: subject: 200208 Migrant Cultural Studies
subject: FOS: Other humanities
subject: 190404 Drama, Theatre and Performance Studies
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 130205 Humanities and Social Sciences Curriculum and Pedagogy (excl. Economics, Business and Management)
subject: FOS: Educational sciences
subject: Gender studies
subject: 220405 Religion and Society
subject: FOS: Philosophy, ethics and religion

description: This Health Humanities Portrait--Identity at the Intersection of Gender and Religion among Mexican-American Women in Chicago-- explores how individuals are expected to navigate a variety of social roles—such as their gender, age, and vocation--in their everyday lives. This Health Humanities portrait uses a “dramaturgical analysis,” derived from performance studies, to explore how social roles influence our understandings and experiences of health, well-being, and illness.
A cell-centered implicit-explicit Lagrangian scheme for a unified model of nonlinear continuum mechanics on unstructured meshes
Creators: name: Boscheri, Walter
name: Chiocchetti, Simone
name: Peshkov, Ilya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: A cell-centered implicit-explicit updated Lagrangian finite volume scheme on unstructured grids is proposed for a unified first order hyperbolic formulation of continuum fluid and solid mechanics. The scheme provably respects the stiff relaxation limits of the continuous model at the fully discrete level, thus it is asymptotic preserving. Furthermore, the GCL is satisfied by a compatible discretization that makes use of a nodal solver to compute vertex-based fluxes that are used both for the motion of the computational mesh as well as for the time evolution of the governing PDEs. Second-order accuracy in space is achieved using a TVD piecewise linear reconstruction, while an implicit-explicit (IMEX) Runge-Kutta time discretization allows the scheme to obtain higher accuracy also in time. Particular care is devoted to the design of a stiff ODE solver, based on approximate analytical solutions of the governing equations, that plays a crucial role when the visco-plastic limit of the model is approached. We demonstrate the accuracy and robustness of the scheme on a wide spectrum of material responses covered by the unified continuum model that includes inviscid hydrodynamics, viscous heat conducting fluids, elastic and elasto-plastic solids in multidimensional settings.
Multiwavelength Spectral Analysis and Neural Network Classification of Counterparts to 4FGL Unassociated Sources
Creators: name: Kerby, Stephen
name: Kaur, Amanpreet
name: Falcone, Abraham D.
name: Eskenasy, Ryan
name: Hancock, Fredric
name: Stroh, Michael C.
name: Ferrara, Elizabeth C.
name: Ray, Paul S.
name: Kennea, Jamie A.
name: Grove, Eric
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Fermi-LAT unassociated sources represent some of the most enigmatic gamma-ray sources in the sky. Observations with the Swift-XRT and -UVOT telescopes have identified hundreds of likely X-ray and UV/optical counterparts in the uncertainty ellipses of the unassociated sources. In this work we present spectral fitting results for 205 possible X-ray/UV/optical counterparts to 4FGL unassociated targets. Assuming that the unassociated sources contain mostly pulsars and blazars, we develop a neural network classifier approach that applies gamma-ray, X-ray, and UV/optical spectral parameters to yield descriptive classification of unassociated spectra into pulsars and blazars. From our primary sample of 174 Fermi sources with a single X-ray/UV/optical counterpart, we present 132 P_bzr > 0.99 likely blazars and 14 P_bzr < 0.01 likely pulsars, with 28 remaining ambiguous. These subsets of the unassociated sources suggest a systematic expansion to catalogs of gamma-ray pulsars and blazars. Compared to previous classification approaches our neural network classifier achieves significantly higher validation accuracy and returns more bifurcated P_bzr values, suggesting that multiwavelength analysis is a valuable tool for confident classification of Fermi unassociated sources.
description: 13 pages text, 6 figures, 5 tables including 2 catalog tables
Soft breaking of BRST invariance for introducing non-perturbative infrared effects in a local and renormalizable way
Creators: name: Baulieu, L.
name: Sorella, S. P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The possibility of introducing non-perturbative infrared effects leading to a modification of the long distance behavior of gauge theories through a soft breaking of the BRST invariance is investigated. The method reproduces the Gribov-Zwanziger action describing the restriction of the domain of integration in the Feynman path integral to the Gribov region and a model for the dynamical quark mass generation is presented. The soft symmetry breaking relies on the introduction of BRST doublets and massive physical parameters, which allow one to distinguish the infrared region from the ultraviolet one, within the same theory.
description: 11 pages
Telegram from Kathleen Raine to Robin Skelton, [between 1970 and 1979]
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Platonists
valueUri: http://id.worldcat.org/fast/1066881
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Novelists
valueUri: http://id.worldcat.org/fast/1039684
subject: Skelton, Robin
valueUri: http://id.worldcat.org/fast/51853
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718
subject: Philosophy
valueUri: http://id.worldcat.org/fast/1060777
subject: FOS: Philosophy, ethics and religion
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Wiccans
valueUri: http://id.worldcat.org/fast/1765210
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Editors
valueUri: http://id.worldcat.org/fast/902475
subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672

description: Part of a collection of correspondence from Kathleen Raine to Robin Skelton. Skelton was a British poet, academic, anthologist, and practicing Wiccan. He taught at Manchester University before emigrating to Canada in 1963, where he taught creative writing at the University of Victoria and started the literary magazine The Malahat Review. Also included are some letters to Skelton’s wife Sylvia, and his daughters. Spanning close to forty-five years, the correspondence discusses poetry, writing, and philosophy; particularly Platonism and Neoplatonism. Raine often refers to the writings of William Blake and W. B. Yeats. Many letters also mention contemporary literary figures at the time including: Herbert Read, Peter Russell, Liam Miller, and Thurairajah Tambimuttu. In this telegram Raine asks if Skelton has received a notebook she sent in the mail.
Use of DDI to document annual public-use microdata (PUMD) for Consumer Expenditure Surveys
Creators: name: Gillman, Dan
Publisher: name: Zenodo
Year: 2019
Subjects: DDI
metadata
NADDI2019

description: The U.S. Bureau of Labor Statistics (BLS) is using DDI to document Consumer Expenditure Surveys (CE). CE produces PUMD files on a yearly basis. The immediate goal in the development of the system is to allow users to connect PUMD variables to their questions. The current stand-alone database with the information on all the variables is incomplete, and the ability to track changes to codes, definitions, variables, and files over time and across surveys is not straightforward. Our plans are to incorporate functions to view the mapping of variables and questions and track changes. In addition, we want to record methodological documentation such as questionnaires, weighting and sampling designs. In the iteration of the metadata system currently under development, we are mapping the variables from the 2017 PUMD files to their questions, which either wholly or in part provide the input to them. In this talk, we describe the development effort with particular emphasis on variable and question mapping. In many discussions about metadata models, the mapping between variables and questions is glossed over—the implication being that mapping is straightforward. Our experience is different, and we describe the difficulties faced.
Molecular Interactions Induced by a Static Electric Field in Quantum Mechanics and Quantum Electrodynamics
Creators: name: Karimpour, Mohammad Reza
name: Fedorov, Dmitry V.
name: Tkatchenko, Alexandre
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: By means of quantum mechanics and quantum electrodynamics applied to coupled harmonic Drude oscillators, we study the interaction between two neutral atoms or molecules subject to a uniform static electric field. Our focus is to understand the interplay between leading contributions to field-induced electrostatics/polarization and dispersion interactions, as considered within the employed Drude model for both non-retarded and retarded regimes. For the first case, we present an exact solution for two coupled oscillators obtained by diagonalizing the corresponding quantum-mechanical Hamiltonian and demonstrate that the external field can control the strength of different intermolecular interactions and relative orientations of the molecules. In the retarded regime described by quantum electrodynamics, our analysis shows that field-induced electrostatic and polarization energies remain unchanged (in isotropic and homogeneous vacuum) compared to the nonretarded case. For interacting species modeled by quantum Drude oscillators, the developed framework based on quantum mechanics and quantum electrodynamics yields the leading contributions to molecular interactions under the combined action of external and vacuum fields.
description: 23 pages, 3 figures
Giga-Periodic Orbits for Weakly Coupled Tent and Logistic Discretized Maps
Creators: name: Lozi, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 65P20; 65C10;37E05;

description: We introduce new models of very weakly coupled logistic and tent maps for which orbits of very long period are found. The length of these periods is far greater than one billion. The property of these models relatively to the distribution of the iterated points (invariant measure) is described.
description: 45 pages, 23 figures, Invited conference of International Conference on Industrial and Appl. Math., New Delhi, India, 4-6 Dec. 2004
Solve for X(ML): Transforming metadata to transform data access
Creators: name: Huck, John
Publisher: name: Zenodo
Year: 2019
Subjects: metadata
NADDI2019

description: At the University of Alberta, a subscription to data resources from the Linguistic Data Consortium (LDC) presented a cataloguing problem for library staff and access difficulties for users: resources were published in digital and physical formats, but the digital access was difficult to catalogue, and some datasets were available only in physical format. As a result, there was no single place to discover what datasets the library had purchased, and accessing the data involved a different retrieval process for each format.

This presentation describes a project undertaken by staff from three library units to develop a simplified access model for LDC resources, set to be launched in 2019. LDC metadata available from an actively updated OAI-PMH host provided the basis for a transformation workflow to generate MARC records with custom XSLT stylesheets. This allowed the team to think about user goals rather than cataloguing workflows and imagine an access model where users would not need to know anything about data format. In the new access model, each MARC record includes a link to a retrieval request form. Library staff pick the best format for retrieval and deliver the data electronically to authorized users.
ผลการเรียนรู้ด้วยข้อความสั้น (SMS) ผ่านโทรศัพท์เคลื่อนที่ เรื่อง ปรัชญาเศรษฐกิจพอเพียงสำหรับนักศึกษา รับปริญญาตรี มหาวิทยาลัยเทคโนโลยีราชมงคลธัญบุรี
Creators: name: จินตนาภรณ์  นาคสัมพันธ์
Publisher: name: มหาวิทยาลัยเทคโนโลยีราชมงคลธัญบุรี
Year: 2008
Subjects: ข้อความสั้น, โทรศัพท์เคลื่อนที่

description: 2, 2, วารสารวิชาการและวิจัย มทร.พระนคร
A circumnuclear disk of atomic hydrogen in Centaurus A
Creators: name: Morganti, R.
name: Oosterloo, T.
name: Struve, C.
name: Saripalli, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new observations, performed with the Australia Telescope Compact Array, of the HI absorption in the central regions of Centaurus A. For the first time, absorption is detected against the radio core at velocities blueshifted with respect to the systemic velocity. Moreover, the data show that the nuclear redshifted absorption component is broader than reported before. With these new results, the kinematics of the HI in the inner regions of Cen A appears very similar to that observed in emission for the molecular circumnuclear disk. This suggests that the central HI absorption is not, as was previously claimed, evidence of gas infall into the AGN, but instead is due to a cold, circumnuclear disk.
description: Accepted for publication in A&A Letter, 4 pages, 2 figures
Quantum Zeno effect in self-sustaining systems: suppressing phase diffusion via repeated measurements
Creators: name: Li, Wenlin
name: Es'haqi-Sani, Najmeh
name: Zhang, Wen-Zhao
name: Vitali, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the effect of frequent projective measurements on the dynamics of quantum self-sustaining systems, by considering the prototypical example of the quantum Van der Pol oscillator. Quantum fluctuations are responsible for phase diffusion which progressively blurs the semiclassical limit cycle dynamics and synchronization, either to an external driving, or between two coupled self-sustained oscillators. We show that by subjecting the system to repeated measurements of heterodyne type at an appropriate repetition frequency one can significantly suppress phase diffusion without spoiling the semiclassical dynamics. This quantum Zeno-like effect may be effective either in the case of one or two coupled van der Pol oscillators, and we discuss its possible implementation in the case of trapped ions.
Resolution of Hagedorn singularity in superstrings with gravito-magnetic fluxes
Creators: name: Angelantonj, C.
name: Kounnas, C.
name: Partouche, H.
name: Toumbas, N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider closed type II and orientifold backgrounds where supersymmetry is spontaneously broken by asymmetric geometrical fluxes. We show that these can be used to describe thermal ensembles with chemical potentials associated to "gravito-magnetic" fluxes. The thermal free energy is computed at the one-loop string level, and it is shown to be free of the usual Hagedorn-like instabilities for a certain choice of the chemical potentials. In the closed string gravitational sector, as well as in the open string matter sector of the proposed orientifold construction, the free energy turns out to have "Temperature duality" symmetry, ${\cal F}(T/T_H)={T^2\over T_H^2} {\cal F}(T_H/T)$, which requires interchanging the space-time spinor representations $S\leftrightarrow C$. For small temperatures, $T\to 0$, the anti-spinor $C$ decouples from the spectrum while for large temperatures, $T\to \infty$, the spinor $S$ decouples. In both limits the free energy vanishes, as we recover a conventional type II superstring theory. At the self dual point $T=T_H$, the thermal spectra of $S$ and $C$ are identical. Moreover, there are extra massless scalars in the adjoint representation of an SO(4) non-abelian gauge symmetry in the closed-string sector, and open-string massless states charged simultaneously under both the Chan-Paton and the closed-string SO(4) gauge group.
description: LaTeX, 1+23 pages. v2 Section 2.1 expanded. Misprints corrected. To appear in Nuclear Physics B
The Effective Field Theory of Inflation
Creators: name: Cheung, Clifford
name: Creminelli, Paolo
name: Fitzpatrick, A. Liam
name: Kaplan, Jared
name: Senatore, Leonardo
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the effective field theory of inflation, i.e. the most general theory describing the fluctuations around a quasi de Sitter background, in the case of single field models. The scalar mode can be eaten by the metric by going to unitary gauge. In this gauge, the most general theory is built with the lowest dimension operators invariant under spatial diffeomorphisms, like g^{00} and K_{mu nu}, the extrinsic curvature of constant time surfaces. This approach allows us to characterize all the possible high energy corrections to simple slow-roll inflation, whose sizes are constrained by experiments. Also, it describes in a common language all single field models, including those with a small speed of sound and Ghost Inflation, and it makes explicit the implications of having a quasi de Sitter background. The non-linear realization of time diffeomorphisms forces correlation among different observables, like a reduced speed of sound and an enhanced level of non-Gaussianity.
description: 26 pages. v2: minor corrections, JHEP published version
Complex sampling design settings: Bridging technical documentation and applied researcher software use
Creators: name: Holland, Ben
name: Kolenikov, Stas
name: West, Brady
name: Lugtig, Peter
Publisher: name: Zenodo
Year: 2019
Subjects: metadata
survey design
NADDI2019

description: This work documents our understanding of and best practice recommendations for specifying complex sampling design settings in the statistical software used for design-based survey data analyses. We discuss complex survey data features such as stratification, clustering, unequal probabilities of selection and calibration; outline their impact on estimation procedures; and demonstrate the dangers of incorrect analysis that ignores them. We show how statistical software handles these features. We analyze the documentation that accompanies several surveys collected and distributed by national statistical offices, statistical agencies and academic organizations, and rate the ease or difficulty of specifying the sampling design correctly in the software based on the dataset documentation provided. We conclude with our recommendations for survey data providers on how to create the transparent, accurate and effective documentation required by survey data users to account for sampling design features in their analyses of complex survey data. This work is co-authored with Brady T. West (University of Michigan) and Peter Lugtig (Utrecht University).
Noncommutative Geometry in the Framework of Differential Graded Categories
Creators: name: Mahanta, Snigdhayan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: In this survey article we discuss a framework of noncommutative geometry with differential graded categories as models for spaces. We outline a construction of the category of noncommutative spaces and also include a discussion on noncommutative motives. We propose a motivic measure with values in a motivic ring. This enables us to introduce certain zeta functions of noncommutative spaces.
description: 19 pages. Minor corrections and one reference added; to appear in the proceedings volume of AGAQ Istanbul, 2006
Detection of OH in the ultra-hot Jupiter WASP-76b
Creators: name: Landman, Rico
name: Sànchez-López, Alejandro
name: Mollière, Paul
name: Kesseli, Aurora
name: Louca, Amy
name: Snellen, Ignas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Ultra-hot Jupiters have dayside temperatures at which most molecules are expected to thermally dissociate. The dissociation of water vapour results in the production of the hydroxyl radical (OH). While OH absorption is easily observed in near-infrared spectra of M dwarfs, which have similar effective temperatures as ultra-hot Jupiters, it is often not considered when studying the atmospheres of ultra-hot Jupiters. We use high-resolution spectroscopic observations of a transit of WASP-76b obtained using CARMENES to study the presence of OH. After validating the OH line list, we generate model transit spectra of WASP-76b with petitRADTRANS. The data are corrected for stellar and telluric contamination and cross-correlated with the model spectra. After combining all cross-correlation functions from the transit, a detection map is constructed. Constraints on the planet properties from the OH absorption are obtained from a Markov chain Monte Carlo analysis. OH is detected in the atmosphere of WASP-76b with a peak signal-to-noise ratio of 6.1. From the retrieval we obtain $K_p=232 \pm 12$ km/s and a blueshift of $-13.2 \pm 1.6$ km/s, which are offset from the expected velocities. Considering the fast spin rotation of the planet, the blueshift is best explained with the signal predominantly originating from the evening terminator and the presence of a strong dayside-to-nightside wind. The increased $K_p$ over its expected value (196.5 km/s) is, however, a bit puzzling. The signal is found to be broad, with a full width at half maximum of $16.8^{+4.6}_{-4.0}$ km/s. The retrieval results in a weak constraint on the mean temperature of 2700-3700 K at the pressure range of the OH signal. We show that OH is readily observable in the transit spectra of ultra-hot Jupiters. Studying this molecule can provide insights into the molecular dissociation processes in the atmospheres of such planets.
description: Accepted for publication in A&A
Identity at the Intersection of Gender and Religion among Mexican-American Women in Chicago Interview Transcript
Creators: name: Sufian, Sandra
name: Michel, Joanna
name: Sandahl, Carrie
name: Vazquez-Melendez, Elsa
name: Case, Gretchen
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: subject: Gender studies
subject: 220405 Religion and Society
subject: FOS: Philosophy, ethics and religion
subject: 190404 Drama, Theatre and Performance Studies
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 200205 Culture, Gender, Sexuality
subject: FOS: Other humanities
subject: 160810 Urban Sociology and Community Studies
subject: FOS: Sociology

description: This portrait uses the basic elements of a dramaturgical analysis to analyze an interview with three women, all born in Mexico but residing in Chicago. These women share stories that illuminate the gendered strategies they use to address health, well-being, and illness for themselves and for their families.
Generating content for CLOSER Discovery
Creators: name: Mills, Hayley
name: De Barros, Charles
Publisher: name: Zenodo
Year: 2019
Subjects: DDI
metadata
NADDI2019

description: CLOSER brings together eight world-leading UK longitudinal studies to maximize their use, value and impact. A major output has been CLOSER Discovery, which allows users to search and browse questionnaire and dataset metadata. The efficient data management of complex longitudinal studies is both desirable and increasingly essential. Metadata standards are critical for maintaining this information through the data lifecycle. Many long-term studies face a historical backlog that has prevented them from moving to the best metadata standards. The CLOSER project has received significant funding from the Economic and Social Research Council and Medical Research Council for these eight studies, which provide the basis for a sustainable high-quality research resource.

CLOSER has developed a suite of tools and software using both in-house and commercially available solutions that begin to tackle some of the obstacles involved in documenting and using longitudinal metadata. The presentation will report on the successes and problems faced in using the DDI Lifecycle metadata standard to achieve these ambitions. This will be delivered as three presentations on:

	questionnaire metadata capture and annotation
	the mapping of questions, variables, keywords and concepts
	a demonstration of the latest functionality available for the research community
File index for #39 in MCF-7 and U87MG tumor models at different time points
Creators: name: Chen, Wei
name: Huang, Zeng
name: Tay, Nicholas
name: Giglio, Benjamin
name: Wang, Mengzhe
name: Wang, Hui
name: Wu, Zhanhong
name: Nicewicz, David
name: Li, Zibo
Publisher: name: Zenodo
Year: 2019

description: file index