cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The barycentric motion of exoplanet host stars: tests of solar spin-orbit coupling
Creators: name: Perryman, M. A. C.
name: Schulze-Hartung, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Empirical evidence suggests a tantalising but unproven link between various indicators of solar activity and the barycentric motion of the Sun. The latter is exemplified by transitions between regular and more disordered motion modulated by the motions of the giant planets, and rare periods of retrograde motion with negative orbital angular momentum. An examination of the barycentric motion of exoplanet host stars, and their stellar activity cycles, has the potential of proving or disproving the Sun's motion as an underlying factor in the complex patterns of short- and long-term solar variability indices, by establishing whether such correlations exist in other planetary systems. A variety of complex patterns of barycentric motions of exoplanet host stars is demonstrated, depending on the number, masses and orbits of the planets. Each of the behavioural types proposed to correlate with solar activity are also evident in exoplanet host stars: repetitive patterns influenced by massive multiple planets, epochs of rapid change in orbital angular momentum, and intervals of negative orbital angular momentum. The study provides the basis for independent investigations of the widely-studied but unproven suggestion that the Sun's motion is somehow linked to various indicators of solar activity. We show that, because of the nature of their barycentric motions, the host stars HD168443 and HD74156 offer particularly powerful tests of this hypothesis.
description: 7 pages, 3 figures. Accepted for publication in A&A
title: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Hanford Dole to the President's Committee on Employment of the Handicapped
Creators: name: Dole, Elizabeth
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1986
Subjects: classificationCode: https://trt.trb.org/term/91614
subject: Persons with disabilities
classificationCode: https://trt.trb.org/term/88194
subject: Accessibility
classificationCode: https://trt.trb.org/term/91439
subject: Employment

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Hanford Dole to the President's Committee on Employment of the Handicapped, Washington, D.C., April 30, 1986.
title: Statement by Secretary of Transportation Elizabeth Hanford Dole on the Final Senate Conrail Vote
Creators: name: Dole, Elizabeth
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1986
Subjects: classificationCode: https://trt.trb.org/term/88661
subject: Finance
classificationCode: https://trt.trb.org/term/88963
subject: Politics
classificationCode: https://trt.trb.org/term/92116
subject: Federal government

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Statement by Secretary of Transportation Elizabeth Hanford Dole on the Final Senate Conrail Vote, February 4, 1986.
Limit theorems for power variations of pure-jump processes with application to activity estimation
Creators: name: Todorov, Viktor
name: Tauchen, George
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: This paper derives the asymptotic behavior of realized power variation of pure-jump Itô semimartingales as the sampling frequency within a fixed interval increases to infinity. We prove convergence in probability and an associated central limit theorem for the realized power variation as a function of its power. We apply the limit theorems to propose an efficient adaptive estimator for the activity of discretely-sampled Itô semimartingale over a fixed interval.
description: Published in at http://dx.doi.org/10.1214/10-AAP700 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
How to upload resources on communities of Zenodo (en). Πώς να μεταφορτώσετε πόρους στις κοινότητες του Zenodo (ελ).
Creators: name: Nikas, Konstantinos N.
Publisher: name: Zenodo
Year: 2022
Subjects: Zenodo
Communities
Open Access
Open Science

description: The communities of Zenodo are a typical example of the spread of the movement for
 open access to science, with the generous support of the European Commission,
 OpenAIRE, CERN and Invenio. This simplistic guide was created to facilitate
 dissemination of the work of digital communities for the democratization of knowledge and the Open Science. Οι κοινότητες του Zenodo, αποτελούν χαρακτηριστικό παράδειγμα της διάδοσης του κινήματος για την ανοικτή πρόσβαση στην επιστήμη, με τη γενναιόδωρη υποστήριξη της Ευρωπαϊκής Επιτροπής, της OpenAIRE, του CERN και του Invenio. Ο απλοϊκός αυτός οδηγός δημιουργήθηκε για να διευκολύνει τη διάδοση, του έργου των ψηφιακών κοινοτήτων για τον εκδημοκρατισμό της γνώσης και την Ανοικτή Επιστήμη.
A Simple Quantum Model of Ultracold Polar Molecule Collisions
Creators: name: Idziaszek, Zbigniew
name: Quéméner, Goulven
name: Bohn, John L.
name: Julienne, Paul S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We present a unified formalism for describing chemical reaction rates of trapped, ultracold molecules. This formalism reduces the scattering to its essential features, namely, a propagation of the reactant molecules through a gauntlet of long-range forces before they ultimately encounter one another, followed by a probability for the reaction to occur once they do. In this way, the electric-field dependence should be readily parametrized in terms of a pair of fitting parameters (along with a $C_6$ coefficient) for each asymptotic value of partial wave quantum numbers $|L,M \rangle$. From this, the electric field dependence of the collision rates follows automatically. We present examples for reactive species such as KRb, and non-reactive species, such as RbCs.
Climate change impacts on Canadian fishing and seafood supply
Creators: name: Talloni-Álvarez, Nicolás Ernesto
Publisher: name: University of British Columbia
Year: 2021

description: Climate change is already affecting ocean conditions, including warming, acidification, deoxygenation and sea-level rise. These changes are affecting marine species globally, with subsequent impacts on marine fisheries, peoples’ livelihoods, and food security. The magnitude of these changes are more prevalent in developing nations and tropical countries, yet the risk of climate impacts on developed nations is not negligible. Shifts in stock distribution and fish abundance under climate change could impact seafood available to Indigenous peoples and tens of thousands of other Canadians. Achieving the Paris Agreement target of limiting atmospheric warming to 1.5°C above pre-industrial levels could mitigate projected declines in fish biomass, with benefits for ocean life, economies and people. In this work, I conduct a systematic literature review on the impacts of climate change on Canada's Pacific marine ecosystems and fisheries, highlighting its critical effects on them. I then examine climate impacts on Canada’s marine fisheries and seafood supply under two greenhouse gas emissions scenarios that correspond to alternative futures with global warming of 1.5° and 3.5°C relative to pre-industrial levels. Finally, I conduct a semi-quantitative assessment of the effectiveness of ocean-based solutions in British Columbia to mitigate climate change and reduce its impacts on the marine ecosystems and fisheries of the Province. My results indicate that the 1.5°C warming scenario could protect marine catches directed to Canada’s seafood supply by up to 11% and reduce Canadian household seafood expenditures by US$ 528 million annually, relative to a 3.5°C global warming scenario. The results also show that the full implementation of marine renewable energy in British Columbia could reduce GHG emissions by ~270 MT per year, filling the gap between current emissions and Canada’s Paris Agreement pledge to reduce emission by 30% below 2005 levels. While the effectiveness of marine renewables to reduce climate change depends on a global achievement of mitigation targets, solutions such as restoring vegetation, marine protected areas and pollution reduction show potential to address climate impacts locally (e.g., ocean acidification and sea-level rise). The findings offer evidence to support the benefits of carbon emissions mitigation in reducing seafood supply vulnerabilities to climate change.
title: Ð£Ð¿ÑÑÐ³Ð¸Ðµ Ñ Ð°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° Ð² Ð¼Ð¾Ð´ÐµÐ»ÑÑ Ð½ÐµÑÐ¸Ð¼Ð¼ÐµÑÑÐ¸ÑÐ½Ð¾Ð¹ ÑÐµÐ¾ÑÐ¸Ð¸ ÑÐ¿ÑÑÐ³Ð¾ÑÑÐ¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Elastic characteristics of a material in models of asymmetric elasticity theory
Creators: name: Ð¡ÐºÑÐ¸Ð¿ÐºÐ¾, ÐÐ³Ð¾ÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: ÑÐµÐ¾ÑÐ¸Ñ ÐÐ¾ÑÑÐµÑÐ°
ÑÐ¿ÑÑÐ³Ð¸Ðµ Ð¼Ð¾Ð´ÑÐ»Ð¸
ÐºÐ»ÐµÑÐ¾ÑÐ½Ð°Ñ ÑÑÑÑÐºÑÑÑÐ°
Cosserat theory
elastic modules
cell structure

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¿Ð¾Ð¸ÑÐºÑ ÑÐ¿ÑÑÐ³Ð¸Ñ Ð¼Ð¾Ð´ÑÐ»ÐµÐ¹ ÐºÐ»ÐµÑÐ¾ÑÐ½Ð¾Ð¹ ÑÑÑÑÐºÑÑÑÑ Ð¸Ð· Ð¿ÑÐ°Ð²Ð¸Ð»ÑÐ½ÑÑ ÑÐµÑÑÐ¸ÑÐ³Ð¾Ð»ÑÐ½Ð¸ÐºÐ¾Ð². ÐÐ¾Ð¸ÑÐº ÑÐ¿ÑÑÐ³Ð¸Ñ Ð¼Ð¾Ð´ÑÐ»ÐµÐ¹ ÐºÐ»ÐµÑÐ¾ÑÐ½ÑÑ ÑÑÑÑÐºÑÑÑ Ñ ÑÐµÑÑÐ¸ÑÐ³Ð¾Ð»ÑÐ½ÑÐ¼Ð¸ ÑÑÐµÐ¹ÐºÐ°Ð¼Ð¸ Ð¾ÑÐ½Ð¾Ð²Ð°Ð½ Ð½Ð° Ð¼ÐµÑÐ¾Ð´Ðµ Ð­. ÐÐ°Ð°ÑÐ°, ÐºÐ¾ÑÐ¾ÑÑÐ¹ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð» Ð¿Ð¾Ð´Ð¾Ð±Ð½ÑÐ¹ Ð¼ÐµÑÐ¾Ð´ Ð´Ð»Ñ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ ÑÐ¿ÑÑÐ³Ð¸Ñ Ð¼Ð¾Ð´ÑÐ»ÐµÐ¹ ÐºÐ»ÐµÑÐ¾ÑÐ½ÑÑ ÑÑÑÑÐºÑÑÑ Ñ ÐºÑÑÐ³Ð»ÑÐ¼Ð¸ ÑÑÐµÐ¹ÐºÐ°Ð¼Ð¸. Ð ÐºÐ°ÑÐµÑÑÐ²Ðµ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð±Ð°Ð·Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ñ ÑÐ¾Ð¾ÑÐ½Ð¾ÑÐµÐ½Ð¸Ñ Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ñ-Ð´ÐµÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸ ÐÑÑÐ¾Ñ-Ð¡ÑÐ°ÑÐ¶ÐµÐ²ÑÐºÐ¸. ÐÐ»Ñ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ð¹ Ð¸ Ð´ÐµÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¹ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² ÑÑÑÑÐºÑÑÑÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð»ÑÑ ÐÐ SCAD.
Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð±ÑÐ»Ð¸ Ð¿Ð¾Ð»ÑÑÐµÐ½Ñ ÑÐ¿ÑÑÐ³Ð¸Ðµ Ð¼Ð¾Ð´ÑÐ»Ð¸ A Ð¸ S Ð´Ð»Ñ ÑÑÑÑÐºÑÑÑÑ 3x3 Ð¸ Ð¿Ð¾ÐºÐ°Ð·Ð°Ð½Ð¾, ÑÑÐ¾ Ð¿ÑÐ¸ ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸Ð¸ Ð´Ð»Ð¸Ð½Ñ ÑÐµÐ±ÐµÑ Ð² Ð´Ð²Ð° ÑÐ°Ð·Ð° Ñ ÑÐ¾ÑÑÐ°Ð½ÐµÐ½Ð¸ÐµÐ¼ ÑÐ°Ð·Ð¼ÐµÑÐ¾Ð² ÑÐµÑÐµÐ½Ð¸Ñ â Ð·Ð½Ð°ÑÐµÐ½Ð¸Ñ ÑÐ¿ÑÑÐ³Ð¸Ñ Ð¼Ð¾Ð´ÑÐ»ÐµÐ¹ ÑÐ²ÐµÐ»Ð¸ÑÐ¸Ð²Ð°ÑÑÑÑ Ð½Ðµ Ð¼ÐµÐ½ÐµÐµ, ÑÐµÐ¼ Ð² 2,71 ÑÐ°Ð·Ð°. Ð¢Ð°ÐºÐ¶Ðµ Ð±ÑÐ»Ð¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ñ ÑÑÑÑÐºÑÑÑÑ Ð±Ð¾Ð»ÑÑÐ¸Ñ ÑÐ°Ð·Ð¼ÐµÑÐ½Ð¾ÑÑÐµÐ¹ Ð¸ Ð¿Ð¾ÐºÐ°Ð·Ð°Ð½Ð¾, ÑÑÐ¾ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ñ ÑÐ¿ÑÑÐ³Ð¸Ñ Ð¼Ð¾Ð´ÑÐ»ÐµÐ¹ Ð½Ðµ Ð·Ð°Ð²Ð¸ÑÐ¸Ñ Ð¾Ñ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²Ð° ÑÑÐµÐµÐº, Ð¿ÑÐ¸ ÑÑÐ»Ð¾Ð²Ð¸Ð¸, ÑÑÐ¾ Ð² ÑÑÑÑÐºÑÑÑÐµ ÑÐ¾ÑÑÐ°Ð½ÑÐµÑÑÑ ÑÐ¾Ð¾ÑÐ½Ð¾ÑÐµÐ½Ð¸Ðµ ÑÑÐ¾ÑÐ¾Ð½.
description: The thesis is devoted to finding elastic modules of structure with hexagonal cells. The Waasâs method was applied to find elastic modules for structure with hexagonal cells. Ostoja-Starzewskiâs stressâstrain relation for micropolar elasticity was used as a theoretical base. The SCAD Office was used for determining stress and strain volumes.
 As a result A and S modules were found for a 3x3 structure and there was shown that if we increase the length of side two times then we get elastic modules 2.71 times more. Also structures with more cells were researched and we found out that elastic modules do not depend on number of cells on condition that we use the same relation of sides in structures.
title: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Hanford Dole, Opening Statement, Budget News Conference
Creators: name: Dole, Elizabeth
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1986
Subjects: classificationCode: https://trt.trb.org/term/87904
subject: Transportation

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Hanford Dole, Opening Statement, Budget News Conference, February 5, 1986.
The Standardized Candle Method for Type II Plateau Supernovae
Creators: name: E., Felipe Olivares
name: Hamuy, Mario
name: Pignata, Giuliano
name: Maza, José
name: Bersten, Melina
name: Phillips, Mark M.
name: Suntzeff, Nicholas B.
name: Filippenko, Alexei V.
name: Morrel, Nidia I.
name: Kirshner, Robert P.
name: Matheson, Thomas
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this paper we study the "standardized candle method" using a sample of 37 nearby (z<0.06) Type II plateau supernovae having BVRI photometry and optical spectroscopy. An analytic procedure is implemented to fit light curves, color curves, and velocity curves. We find that the V-I color toward the end of the plateau can be used to estimate the host-galaxy reddening with a precision of 0.2 mag. The correlation between plateau luminosity and expansion velocity previously reported in the literature is recovered. Using this relation and assuming a standard reddening law (Rv = 3.1), we obtain Hubble diagrams in the BVI bands with dispersions of ~0.4 mag. Allowing Rv to vary and minimizing the spread in the Hubble diagrams, we obtain a dispersion range of 0.25-0.30 mag, which implies that these objects can deliver relative distances with precisions of 12-14%. The resulting best-fit value of Rv is 1.4 +/- 0.1.
description: Accepted for publication in ApJ
Generation Efficiencies for Propagating Modes in a Supersolid
Creators: name: Sears, Matthew R.
name: Saslow, Wayne M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Using Andreev and Lifshitz's supersolid hydrodynamics, we obtain the propagating longitudinal modes at non-zero applied pressure $P_{a}$ (necessary for solid 4He), and their generation efficiencies by heaters and transducers. For small $P_{a}$, a solid develops an internal pressure $P \sim P_{a}^2$. This theory has stress contributions both from the lattice and an internal pressure $P$. Because both types of stress are included, the normal mode analysis differs from previous works. Not surprisingly, transducers are significantly more efficient at producing elastic waves and heaters are significantly more efficient at producing fourth sound waves. We take the system to be isotropic, which should apply to systems that are glassy or consist of many crystallites; the results should also apply, at least qualitatively, to single-crystal hcp 4He.
description: 10 pages. Accepted by Physical Review B
Radiative Rayleigh-Taylor instabilities
Creators: name: Jacquet, Emmanuel
name: Krumholz, Mark
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We perform analytic linear stability analyses of an interface separating two stratified media threaded by a radiation flux, a configuration relevant in several astrophysical contexts. We develop a general framework for analyzing such systems, and obtain exact stability conditions in several limiting cases. In the optically thin, isothermal regime, where the discontinuity is chemical in nature (e.g.\ at the boundary of a radiation pressure-driven H \textsc{ii} region), radiation acts as part of an effective gravitational field, and instability arises if the effective gravity per unit volume toward the interface overcomes that away from it. In the optically thick "adiabatic" regime where the total (gas plus radiation) specific entropy of a Lagrangian fluid element is conserved,for example at the edge of radiation pressure-driven bubble around a young massive star, we show that radiation acts like a modified equation of state, and we derive a generalized version of the classical Rayleigh-Taylor stability condition.
description: 11 pages, 4 figures. Accepted to ApJ
title: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Hanford Dole at an Executive Forum
Creators: name: Dole, Elizabeth
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1986
Subjects: classificationCode: https://trt.trb.org/term/88643
subject: Leadership
classificationCode: https://trt.trb.org/term/88963
subject: Politics

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Hanford Dole at the Executive Forum, Washington, D.C., February 6, 1986.
Itinerario didattico con il GIS
Creators: name: Olivieri, Marco
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2015

description: Questa ricerca si inserisce nel contesto delle Tecnologie dell’Informazione e della Comunicazione (ICT) e del loro utilizzo in educazione. Il campo specifico della ricerca effettuata è quello dell’utilizzo dei Sistemi d’Informazione Geografici (GIS) in geografia, con gli allievi di prima media. Lo scopo del lavoro è di studiare se lo strumento sia efficace per l’apprendimento della geografia, quale impatto abbia sulla motivazione degli allievi e se il suo utilizzo sia adatto alle capacità cognitive dei ragazzi. Per rispondere alle domande di ricerca di questo lavoro è stata svolta un’attività con il GIS, con due classi di prima media. I temi trattati sono: la morfologia del Canton Ticino e la sua evoluzione demografica. L’apprendimento dei due argomenti viene testato tramite delle domande presenti in alcune verifiche. Inoltre è stato compilato un questionario per raccogliere delle informazioni sulla motivazione degli allievi durante le lezioni con il GIS. I risultati della ricerca mostrano che non ci sono evidenti differenze nell’apprendimento della materia utilizzando lo strumento. Il suo utilizzo però sembra migliorare la motivazione degli allievi di prima media. Un uso efficace di questo strumento richiede una preparazione adeguata del docente, è quindi consigliabile organizzare un corso d’aggiornamento per i docenti della scuola media ticinese. Relatore: Marco Lupatini. Materia: Geografia.
A Survey of the Polarized Emission from the Galactic Plane at 1420 MHz with Arcminute Angular Resolution
Creators: name: Landecker, T. L.
name: Reich, W.
name: Reid, R. I.
name: Reich, P.
name: Wolleben, M.
name: Kothes, R.
name: Uyaniker, B.
name: Gray, A. D.
name: Del Rizzo, D.
name: Furst, E.
name: Taylor, A. R.
name: Wielebinski, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context: Observations of polarized emission are a significant source of information on the magnetic field that pervades the Interstellar Medium of the Galaxy. Despite the acknowledged importance of the magnetic field in interstellar processes, our knowledge of field configurations on all scales is seriously limited. Aims: This paper describes an extensive survey of polarized Galactic emission at 1.4 GHz that provides data with arcminute resolution and complete coverage of all structures from the broadest angular scales to the resolution limit, giving information on the magneto-ionic medium over a wide range of interstellar environments. Methods: Data from the DRAO Synthesis Telescope, the Effelsberg 100-m Telescope, and the DRAO 26-m Telescope have been combined. Angular resolution is ~1' and the survey extends from l = 66 deg to l = 175 deg over a range -3 deg < b < 5 deg along the northern Galactic plane, with a high-latitude extension from l = 101 deg to l = 116 deg up to b = 17.5 deg. This is the first extensive polarization survey to present aperture-synthesis data combined with data from single antennas, and the techniques developed to achieve this combination are described. Results: The appearance of the extended polarized emission at 1.4 GHz is dominated by Faraday rotation along the propagation path, and the diffuse polarized sky bears little resemblance to the total-intensity sky. There is extensive depolarization, arising from vector averaging on long lines of sight, from HII regions, and from diffuse ionized gas seen in H-alpha images. Preliminary interpretation is presented of selected polarization features on scales from parsecs (the planetary nebula Sh 2-216) to hundreds of parsecs (a supperbubble GSH 166-01-17) to kiloparsecs (polarized emission in the direction of Cygnus X).
description: Accepted for publication in Astronomy & Astrophysics
SHELLFISH REGULATORY ECOSYSTEM SERVICES—POTENTIAL FOR NUTRIENT CREDIT TRADING
Creators: name: Cubillo, Alhambra
name: Bricker, Suzanne
name: Ferreira, Joao G.
name: Lopes, Andre .S.
name: Moore, Heather
name: Service, Matt
Publisher: name: Zenodo
Year: 2021
Subjects: Shellfish Aquaculture
Eutrophication
Policy
Nutrient credit trading
Nutrient management
Modelling

description: Eutrophication due to anthropogenic nutrient enrichment of marine waters is a major issue in European seas. These water bodies are susceptible to the direct and indirect effects of excessive nutrient loading, and although point source emissions are currently more controlled, diffuse emissions which end up in the coastal zones are a more complicated and expensive issue to solve. Due to the origin of such emissions, substantial changes might well be required to agriculture and livestock management, leading to high social and financial burdens to communities. The bioextraction capacity of bivalve shellfish is a key regulatory ecosystem service that contributes to eutrophication control, but to date it has not been used in Europe as part of a management framework—in other parts of the world such as the USA, there are examples of working nutrient credit trading schemes where bivalves form a part of the overall N budget as a part of integrated catchment management. The estimation of the amount of nutrients removed by different bivalve species under specific culture practices and in different bays or estuaries is relevant in the EU due to the variety, geographical spread and scale at which shellfish species are farmed in Europe.
Exploring experiences of healthcare professionals and parents in the management of children with functional constipation (FC): A scoping review protocol
Creators: name: McCague, Yvonne
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Pediatrics
subject: Family Medicine
subject: Medicine and Health Sciences
subject: Emergency Medicine
subject: Nursing
subject: FOS: Health sciences
subject: Gastroenterology
subject: Primary Care
subject: Medical Specialties
subject: constipation
subject: healthcare professional
subject: experiences
subject: children
subject: scoping review protocol
subject: scoping review
subject: parent

description: Extended Data to ensure Data Availability for submission of Scoping Review Protocol to HRB Open
Sviluppo di uno scambiatore di calore per banco prova da realizzarsi in additive manufacturing
Creators: name: Bellea, Josef
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2021

description: Uno scambiatore di calore è un dispositivo atto al trasferimento di energia termica tra due o più fluidi a differenti temperature. Esso viene impiegato in molteplici contesti, spaziando dal settore aerospaziale alla sfera domestica. Essendo esso un componente utilizzato in svariati campi, è nata la necessità di evolverne le caratteristiche, al fine di poterlo adattare allo scenario di riferimento. Le odierne possibilità di ricorrere ad un processo di produzione di tipo additivo consentono di ottenere strutture con innumerevoli vantaggi, distaccandosi dai vincoli progettuali imposti dalle tecniche di fabbricazioni tradizionali e permettendo di sviluppare geometrie complesse, prestanti, ottimizzate e dal design innovativo e su misura. Il lavoro di tesi mira allo sviluppo di una variante sostitutiva dello scambiatore di calore a tubi e mantello utilizzato nel laboratorio TFD, situato nelle sede universitaria SUPSI. A tal fine è stato sviluppato un prodotto dal design originale, in grado di rispettare le esigenze imposte dell’unità di servizio a disposizione e realizzato con tecnologie additive che mantenga le medesime prestazioni o al più le incrementi. Al fine di estrapolare i valori di interesse fluido termodinamico, vengono analizzate, valutate e caratterizzate svariate tipologie di celle periodiche. Esse hanno la particolarità di poter essere applicate nel nucleo dello scambiatore, offrendo ampie superfici di scambio a parità di volume occupato e masse ridotte. Il focus del lavoro è la creazione di un workflow idoneo allo studio prestazionale delle singole celle che permetta un’interazione efficace tra i software, rendendo possibile la creazione di una griglia di discretizzazione che rispetti i criteri necessari per garantire la qualità delle analisi CFD. Mediante le analisi di termo-fluidodinamica computazionale vengono valutati il comportamento dello scambiatore in diverse condizioni operative, l’efficacia del design e l’influenza di vari fattori di progettazione. Le simulazioni permettono inoltre di effettuare delle ottimizzazioni localizzate all’interno della geometria, comportando nel complesso un aumento delle prestazioni dell’intero sistema. Infine, viene proposta una strategia di stampa sulla base del design e degli studi effettuati.
Cannabis use in high performance sport : an exploration
Creators: name: Kanerva, Andrew
Publisher: name: University of British Columbia
Year: 2021

description: Cannabis use is undergoing a process of normalization, which is allowing for cannabis use to transition from a once deviant social behaviour to remerge as a common lifestyle choice (Duff et al., 2012). On October 17th, 2018, recreational use of cannabis was legalized in Canada. Since then, cannabis use has increased nationally (Statistics Canada, 2019); this is due to the measurable changes in the ways Canadians perceive and understand the risks associated with cannabis use. However, cannabis remains prohibited for varsity student-athletes in Canada. Consequently, varsity student-athletes who use cannabis maintain separate and competing identities as athletes and as cannabis users. Noting both the proliferation of cannabis use culture in Canada and the prohibition of cannabis use for varsity student-athletes, this study employed a qualitative, phenomenological approach to situate cannabis use within a sociocultural context and to explore cannabis use amongst men and women varsity student-athletes from the University of British Columbia. The purposes of this study were twofold. First, I wanted to challenge existing assumptions by uncovering the reasons why athletes use cannabis and how they use it. Second, I wanted to understand the role that cannabis has in shaping athletes’ identities by exploring the experiences they have when they use cannabis. The findings revealed that cannabis use amongst varsity student-athletes is prevalent despite the current restrictions and that the participants motives and cannabis use behaviours for using cannabis were purposeful. This study also explored student-athletes lived experiences of using cannabis. The findings revealed that the participants used cannabis in ways, at times, and in contexts that allowed them to maintain their dual, competing identities. The findings also highlighted that cannabis use represented a discreditable behaviour, which resulted in feelings of shame, guilt, and regret.
title: Secretary of Transportation Elizabeth Hanford Dole Script for Three Minute Spot for the Billy Graham Crusade
Creators: name: Dole, Elizabeth
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1986
Subjects: classificationCode: https://trt.trb.org/term/88963
subject: Politics

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Secretary of Transportation Elizabeth Hanford Dole Script for Three Minute Spot for the Billy Graham Crusade, February 7, 1986.
Evolutionary and pulsational properties of white dwarf stars
Creators: name: Althaus, Leandro G.
name: Córsico, Alejandro H.
name: Isern, Jordi
name: García-Berro, Enrique
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Abridged. White dwarf stars are the final evolutionary stage of the vast majority of stars, including our Sun. The study of white dwarfs has potential applications to different fields of astrophysics. In particular, they can be used as independent reliable cosmic clocks, and can also provide valuable information about the fundamental parameters of a wide variety of stellar populations, like our Galaxy and open and globular clusters. In addition, the high densities and temperatures characterizing white dwarfs allow to use these stars as cosmic laboratories for studying physical processes under extreme conditions that cannot be achieved in terrestrial laboratories. They can be used to constrain fundamental properties of elementary particles such as axions and neutrinos, and to study problems related to the variation of fundamental constants. In this work, we review the essentials of the physics of white dwarf stars. Special emphasis is placed on the physical processes that lead to the formation of white dwarfs as well as on the different energy sources and processes responsible for chemical abundance changes that occur along their evolution. Moreover, in the course of their lives, white dwarfs cross different pulsational instability strips. The existence of these instability strips provides astronomers with an unique opportunity to peer into their internal structure that would otherwise remain hidden from observers. We will show that this allows to measure with unprecedented precision the stellar masses and to infer their envelope thicknesses, to probe the core chemical stratification, and to detect rotation rates and magnetic fields. Consequently, in this work, we also review the pulsational properties of white dwarfs and the most recent applications of white dwarf asteroseismology.
description: 85 pages, 28 figures. To be published in The Astronomy and Astrophysics Review
RI'/SMOM scheme amplitudes for quark currents at two loops
Creators: name: Gracey, J. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We determine the two loop corrections to the Green's function of a quark current inserted in a quark 2-point function at the symmetric subtraction point. The amplitudes for the scalar, vector and tensor currents are presented in both the MSbar and RI'/SMOM renormalization schemes. The RI'/SMOM scheme two loop renormalization for the scalar and tensor cases agree with previous work. The vector current renormalization requires special treatment as it must be consistent with the Slavnov-Taylor identity which we demonstrate. We also discuss the possibility of an alternative definition of the RI'/SMOM scheme in the case of the tensor current.
description: 36 latex pages, 1 figure, 21 tables, anc directory contains txt file with data in tables
title: Abbreviated Opening Statement on the FY 1987 Budget Before the Senate Appropriations Subcommittee on Transportation
Creators: name: Dole, Elizabeth
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1986
Subjects: classificationCode: https://trt.trb.org/term/88670
subject: Appropriations

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Abbreviated Opening Statement of the Honorable Elizabeth Hanford Dole, Secretary of Transportation, on the FY 1987 Budget Before the Senate Appropriations Subcommittee on Transportation, Washington, D.C., February 19, 1986.
The Pierre Auger Project and Enhancements
Creators: name: Etchegoyen, A.
name: Fröhlich, U.
name: Lucero, A.
name: Sidelnik, I.
name: Wundheiler, B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The current status of the scientific results of the Auger Observatory will be discussed which include spectrum, anisotropy in arrival directions, chemical composition analyses, and limits on neutrino and photon fluxes. A review of the Observatory detection systems will be presented. Auger has started the construction of its second phase which encompasses antennae for radio detection of cosmic rays, high-elevation telescopes, and surface plus muon detectors. Details will be presented on the latter, AMIGA (Auger Muons and Infill for the Ground Array), an Auger project consisting of 85 detector pairs each one composed of a surface water-Cherenkov detector and a buried muon counter. The detector pairs are arranged in an array with spacings of 433 and 750 m in order to perform a detailed study of the 10^17 eV to 10^19 eV spectrum region. Preliminary results on the performance of the 750 m array of surface detectors and the first muon counter prototype will be presented.
description: 10 pages, 8 figures, VIII Latin American Symposium on Nuclear Physics and Applications December 15-19, 2009, Santiago, Chile
Magnetic Monopole Dynamics in Spin Ice
Creators: name: Jaubert, Ludovic D. C.
name: Holdsworth, Peter C. W.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: One of the most remarkable examples of emergent quasi-particles, is that of the "fractionalization" of magnetic dipoles in the low energy configurations of materials known as "spin ice", into free and unconfined magnetic monopoles interacting via Coulomb's 1/r law [Castelnovo et. al., Nature, 451, 42-45 (2008)]. Recent experiments have shown that a Coulomb gas of magnetic charges really does exist at low temperature in these materials and this discovery provides a new perspective on otherwise largely inaccessible phenomenology. In this paper, after a review of the different spin ice models, we present detailed results describing the diffusive dynamics of monopole particles starting both from the dipolar spin ice model and directly from a Coulomb gas within the grand canonical ensemble. The diffusive quasi-particle dynamics of real spin ice materials within "quantum tunneling" regime is modeled with Metropolis dynamics, with the particles constrained to move along an underlying network of oriented paths, which are classical analogues of the Dirac strings connecting pairs of Dirac monopoles.
description: 26 pages, 12 figures
title: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Dole at the Salvation Army Annual Dinner
Creators: name: Dole, Elizabeth
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1986
Subjects: classificationCode: https://trt.trb.org/term/92148
subject: Public service
classificationCode: https://trt.trb.org/term/88963
subject: Politics

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Dole at the Salvation Army Annual Dinner, Birmingham, Alabama, February 20, 1986.
Mapa conceptual Auditoría
Creators: name: Jauregui Silva Jessica Andrea
name: Johanna, Pérez Fernández Blanca
Publisher: name: Zenodo
Year: 2023
Subjects: Auditoría
Auditoría interna
Auditoría externa
Principios
Programa de auditoría

description: Mapa conceptual sobre la temática auditoría, donde se detalla el concepto, tipos de auditoría, principios y gestión de un programa de auditoría.
description: {"references": ["Instituto Colombiano de Normas t\u00e9cnicas y Certificaci\u00f3n (2018). Gu\u00eda T\u00e9cnica Colombiana GTC ISO 19011: Directrices para los Sistemas de Gesti\u00f3n.", "Organizaci\u00f3n Internacional del Trabajo (2002). Directrices relativas a los sistemas de gesti\u00f3n de seguridad y a la salud en el trabajo: ILO-OSH 2001. OIT."]}
Cambrian Hydrocarbon Potential Indicated in Kentucky's Rome Trough
Creators: name: Harris, David C.
name: Drahovzal, James A.
Publisher: name: Kentucky Geological Survey, University of Kentucky
Year: 1996

description: Abstract:
A recent gas discovery in the Rome Trough has resulted in a new phase of deep exploration in eastern Kentucky. This activity is located in Elliott County, near the northern boundary fault of the Cambrian Rome Trough graben. The Carson Associates No. 1 Kazee well was drilled in 1994, and blew out with a reported uncontrolled flow of 11 million cubic feet of gas per day. Although completed at a much lower rate, this well renewed interest in the deep gas potential of the Rome Trough, which has seen sporadic drilling activity since the 1940's. Gas production in the Rome Trough is from marine sandstones and fractured shales assigned to the Cambrian Rome Formation or Conasauga Group. These units are significantly thicker in the fault-bounded extensional graben that trends west-southwest to northeast in eastern Kentucky and continues through West Virginia and Pennsylvania into New York. Recent mapping of the Precambrian basement surface has refined the structure of eastern Kentucky and the Rome Trough. Reservoir fades include fine- to very fine-grained, micaceous, and glauconitic sandstones and fractured shales. Coarser sandstones may occur near border faults, in fan-delta deposits. Traps are primarily structural, and faulting was contemporaneous with deposition. Stratigraphic traps may also exist in the trough, but have not been proven by drilling to date. Stratigraphic traps may include sandstones deposited in turbidite fans in deeper parts of the graben. Potential hydrocarbon source rocks have not been identified. Limited geochemical analyses of well and outcrop samples from the Rome and Conasauga intervals show poor hydrocarbon source potential. Composition of gas produced from the Rome Trough varies significantly in eastern Kentucky. Several occurrences of gas high in nitrogen and helium content were found in the western part of the trough, and may be related to proximity to the Grenville Front. Gas of commercial quality is typical in the eastern part of the trough, where several wells are producing gas with Btu values over 1,000. Significant hydrocarbon potential remains in the Rome Trough, but this play is characterized by complex faulting that influenced the deposition and distribution of potential reservoir rocks. Interpretation of high-quality seismic data will be a key factor to future success in this play.
Funding information: A portion of this work was completed in preparation of a chapter on the pre-Knox play for "The Atlas of Major Appalachian Basin Gas Plays," funded by the U.S. Department of Energy, Morgantown Energy Technology Center, under contract number DE-FC21-91MC28176. This project also funded part of the preparation of "Preliminary Map of the Structure of the Precambrian Surface in eastern Kentucky" (Kentucky Geological Survey, Map and Chart Series 8, 1995).
title: Talking Points Prepared for Elizabeth Hanford Dole for Senator Jeremiah Denton
Creators: name: Dole, Elizabeth
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1986
Subjects: classificationCode: https://trt.trb.org/term/88963
subject: Politics

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Talking Points Prepared for Elizabeth Hanford Dole for Senator Jeremiah Denton, Huntsville and Decatur, Alabama, February 21, 1986.
title: Remarks Prepared for Secretary of Transportation Elizabeth Hanford Dole at the Presentation of the Aero Club Aviation Person of the Year Award to Captain John L. Testrake
Creators: name: Dole, Elizabeth
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1986
Subjects: classificationCode: https://trt.trb.org/term/88618
subject: Awards
classificationCode: https://trt.trb.org/term/88643
subject: Leadership
classificationCode: https://trt.trb.org/term/92148
subject: Public service

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Remarks Prepared for Secretary of Transportation Elizabeth Hanford Dole at the Presentation of the Aero Club Aviation Person of the Year Award to Captain John L. Testrake, Washington, D.C., February 25, 1986.
The ABC model - A Paradigm shift in Integrated Carrying Capacity Modelling
Creators: name: Ferreira, Joao G.
name: Taylor, Nick
name: Cubillo, Alhambra
name: Lencart e Silva, Joao
name: Pastres, Roberto
name: Bergh, Øivind
name: McPherson, Nicola
name: Guilder, James
Publisher: name: Zenodo
Year: 2019
Subjects: Aquaculture
Pathogens
Carrying Capacity
Modelling

description: The ABC model - A Paradigm shift in Integrated Carrying Capacity Modelling.
Decoherence due to elastic Rayleigh scattering
Creators: name: Uys, H.
name: Biercuk, M. J.
name: VanDevender, A. P.
name: Ospelkaus, C.
name: Meiser, D.
name: Ozeri, R.
name: Bollinger, J. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present theoretical and experimental studies of the decoherence of hyperfine ground-state superpositions due to elastic Rayleigh scattering of light off-resonant with higher lying excited states. We demonstrate that under appropriate conditions, elastic Rayleigh scattering can be the dominant source of decoherence, contrary to previous discussions in the literature. We show that the elastic-scattering decoherence rate of a two-level system is given by the square of the difference between the elastic-scattering \textit{amplitudes} for the two levels, and that for certain detunings of the light, the amplitudes can interfere constructively even when the elastic scattering \textit{rates} from the two levels are equal. We confirm this prediction through calculations and measurements of the total decoherence rate for a superposition of the valence electron spin levels in the ground state of $^9$Be$^+$ in a 4.5 T magnetic field.
description: 5 pages, 3 figures
Il cane come impronta emotivo-educativa nella scuola
Creators: name: Canova, Daria
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2019
Subjects: comunicazione non verbale
animali
emozioni
socializzazione

description: Due contesti legati all’affettività e alla comunicazione vengono coinvolti parallelamente in questa tesi. Il primo ambito studia il legame e l’interazione che può formarsi tra bambini e animali, che sono spesso implicati a fini benefici in ambiti terapeutici, sociali ed affettivi. Nel secondo ambito emerge la pratica dell’educazione emotiva a scuola, sempre più frequentemente favorita al fine di sviluppare maggiore consapevolezza rispetto alle proprie emozioni e alla comprensione di quelle altrui. Questo percorso intende osservare in che misura la presenza di un cane come facilitatore per bambini con difficoltà di comunicazione in una classe di scuola elementare, in combinazione con un percorso di educazione emotiva, possa favorire i comportamenti pro-sociali e il benessere degli allievi a scuola. A tale scopo sono state utilizzate delle griglie osservative con scale di riferimento per vari indicatori tra i quali la comunicazione non verbale e osservazioni libere per raccogliere informazioni su un campione di quattro bambini prima, durante e dopo i momenti di presenza del cane in aula. I risultati dell’analisi dei dati raccolti indicano che questa presenza ha avuto un impatto positivo sul benessere della classe ed ha facilitato alcuni atteggiamenti dei bambini. I limiti dello studio, dovuti soprattutto alla breve finestra temporale di sperimentazione, impediscono tuttavia di analizzare in dettaglio gli impatti che ha avuto il cane sui comportamenti sociali dei bambini. Relatrice: Paola Iametti
title: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Dole to the Society of Automotive Engineers
Creators: name: Dole, Elizabeth
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1986
Subjects: classificationCode: https://trt.trb.org/term/92072
subject: Automobile industry

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Dole to the Society of Automotive Engineers, Detroit, Michigan, February 27, 1986.
V456 Ophiuchi and V490 Cygni: Systems with the shortest apsidal-motion periods
Creators: name: Zasche, P.
name: Wolf, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Our main aim is the first detailed analysis of the two eclipsing binaries V456 Oph and V490 Cyg. The system V456 Oph has been studied both photometrically via an analysis of its light curve observed by the INTEGRAL/OMC and by the period analysis of all available times of minima. V490 Cyg has been studied by means of a period analysis only. Many new times of minima for both systems have recently been observed and derived. This allows us for the first time to study in detail the processes that affect both binaries. The main result is the discovery that both systems have eccentric orbits. For V456 Oph we deal with the eccentric eclipsing binary system with the shortest orbital period known (about 1.016 day), while the apsidal motion period is about 23 years. V490 Cyg represents the eclipsing system with the shortest apsidal motion period (about 18.8 years only). The two components of V456 Oph are probably of spectral type F. We compare and discuss the V456 Oph results from the light curve and the period analysis, but a more detailed spectroscopy is needed to confirm the physical parameters of the components more precisely.
description: 4 pages, 3 figures, published in A&A: 2011A&A...527A..43Z