cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Asteroseismic Determination of Stellar Rotation: On Synchronization in the Close Eclipsing Binaries AB Cas and OO Dra
Creators: name: Kim, Seung-Lee
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A star's rotation rate is difficult to estimate without surface inhomogeneities such as dark or bright spots. This paper presents asteroseismic results to determine the rotation rates of $δ$ Sct-type pulsating primary stars in two eclipsing binary systems, AB Cas and OO Dra. After removing the binarity-induced light variations from the archival TESS data and carefully examining the combination frequencies, we identified 12 independent frequencies for AB Cas and 11 frequencies for OO Dra, with amplitudes higher than $\sim$0.3 mmag, as $δ$ Sct-type pulsation frequencies excited in each primary star. The theoretical frequencies for seismic analysis were obtained by fully considering the rotation effects. Grid fitting for various stellar properties, such as mass, radius, metallicity, and rotation rate, yielded the best solution for which theoretical frequencies and stellar parameters agreed well with the observations. The rotation rate of the AB Cas primary was tightly constrained to 0.81 $\pm$ 0.01 day$^{-1}$ ($f_{\rm rot} / f_{\rm orb}$ = 1.11$^{+0.01}_{-0.02}$), which is slightly faster than the synchronized rotation. In contrast, the rotation rate of 0.63 $\pm$ 0.01 day$^{-1}$ for the OO Dra primary is lower than the synchronous value of approximately 0.81 day$^{-1}$. Subsynchronous rotation is uncommon in short-period binaries, and its physical mechanism is not yet well understood. Our results show that asteroseismology can be used to precisely measure the rotation rate of fast-rotating $δ$ Sct stars and thus provide a valuable constraint on rotation-orbit synchronization in close binary systems.
description: 17 pages, accepted for publication in ApJ
Open Access : position des Académies suisses des sciences
Creators: name: Académies Suisses Des Sciences
Publisher: name: Zenodo
Year: 2019
Subjects: Académies suisses
Open Access

description: Les Académies suisses des sciences et leurs différentes unités soutiennent le principe de l’Open Access dans le but d’assurer le libre accès aux publications scientifiques. Par l’entremise de leurs réseaux, elles jouent un rôle d’intermédiaire entre les communautés scientifiques et les institutions en charge des politiques en matière de financement de la recherche.
description: cite as: Académies suisses des sciences (2019): Open Access : position des Académies suisses des sciences. zenodo. https://doi.org/10.5281/zenodo.2649130
title: Ð£Ð½Ð¸Ð²ÐµÑÑÐ°Ð»ÑÐ½ÑÐ¹ Ð¼Ð¾ÑÑÐºÐ¾Ð¹ ÑÐµÑÐ¼Ð¸Ð½Ð°Ð» Ð² ÑÐ°Ð¹Ð¾Ð½Ðµ Ð§Ð°ÑÐ½ÑÐºÐ¾Ð¹ Ð³ÑÐ±Ñ
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: Universal marine terminal in the area of Chaun Bay
Creators: name: Ð¡ÐµÑÐ¾Ð², ÐÐ¸ÐºÐ¸ÑÐ°
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: 2022
Subjects: ÐÐ¸Ð´ÑÐ¾ÑÐµÑ Ð½Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ñ
Ð¿ÑÐ¸ÑÐ°Ð»ÑÐ½Ð¾Ðµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ðµ
Ð±Ð¾Ð»ÑÐ²ÐµÑÐº
ÐÑÐºÑÐ¸ÐºÐ°
Ð§Ð°ÑÐ½ÑÐºÐ°Ñ Ð³ÑÐ±Ð°
marine structures
piled quay wall
Arctic
Chaun bay

description: ÐÐ±ÑÐµÐºÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ: ÐÐ¸Ð´ÑÐ¾ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ñ Ð² Ð°ÑÐºÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð·Ð¾Ð½Ðµ. Ð¦ÐµÐ»Ñ ÑÐ°Ð±Ð¾ÑÑ: ÑÐ±Ð¾Ñ Ð³Ð¸Ð´ÑÐ¾Ð¼ÐµÑÐµÐ¾ÑÐ¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ñ Ð´Ð°Ð½Ð½ÑÑ Ð¸ Ð¸Ñ Ð°Ð½Ð°Ð»Ð¸Ð·, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÐºÐ¾Ð¼Ð¿Ð¾Ð½Ð¾Ð²Ð¾ÑÐ½ÑÑ ÑÐµÑÐµÐ½Ð¸Ð¹, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð³Ð¸Ð´ÑÐ¾ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐµÑÐµÐ½Ð¸Ð¹ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð°. Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ Ð¿ÑÐ¸Ð¼ÐµÐ½ÑÐ»Ð¸ÑÑ Ð¼ÐµÑÐ¾Ð´Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ, ÑÐ°ÐºÐ¸Ðµ ÐºÐ°Ðº: ÑÑÐ°Ð²Ð½Ð¸ÑÐµÐ»ÑÐ½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð·, ÑÑÐ°ÑÐ¸ÑÑÐ¸ÑÐµÑÐºÐ°Ñ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ° Ð´Ð°Ð½Ð½ÑÑ, Ð¼ÐµÑÐ¾Ð´ ÑÐ°ÑÑÐµÑÐ° ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÐ½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÐºÐ¾Ð½ÐµÑÐ½Ð¾-ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ½Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸. ÐÑÐ»Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ ÑÐ°ÑÑÐµÑÑ Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð½Ð¾-Ð´ÐµÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ð¿Ð¾ Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ðµ-Ð³ÑÑÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ñ. Ð ÐµÐ·ÑÐ»ÑÑÐ°ÑÑ Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð¼Ð¾Ð³ÑÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°ÑÑÑÑ Ð¿ÑÐ¸ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸ Ð³Ð¸Ð´ÑÐ¾ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ð¹ Ð² Ð°ÑÐºÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÑÐ»Ð¾Ð²Ð¸ÑÑ.
description: Research object: hydraulic structures in the Arctic zone. Purpose of the work: collecting hydrometeorological data and analyzing them, developing site plan solutions, developing marine structure solutions, Construction Management Plan solutions. In the course of the work, research methods were used, such as: comparative analysis, statistical data processing, the method of numerical modeling structures using the finite element model. The calculations of the stressstrain state of structures according to the construction-soil foundation model were carried out. The results of this masterâs thesis can be used in the design of marine structures in arctic conditions.
Stability and Clifford regularity with respect to star operations
Creators: name: Gabelli, Stefania
name: Picozza, Giampaolo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics

description: In the last few years, the concepts of stability and Clifford regularity have been fruitfully extended by using star operations. In this paper we deepen the study of star stable and star regular domains and relate these two classes of domains to each other.
description: 22 pages; Comm. Alg., 2011
A Hybrid Approach to Full-Scale Reconstruction of Renal Arterial Network
Creators: name: Xu, Peidi
name: Holstein-Rathlou, Niels-Henrik
name: Søgaard, Stinne Byrholdt
name: Gundlach, Carsten
name: Sørensen, Charlotte Mehlin
name: Erleben, Kenny
name: Sosnovtseva, Olga
name: Darkner, Sune
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: The renal vasculature, acting as a resource distribution network, plays an important role in both the physiology and pathophysiology of the kidney. However, no imaging techniques allow an assessment of the structure and function of the renal vasculature due to limited spatial and temporal resolution. To develop realistic computer simulations of renal function, and to develop new image-based diagnostic methods based on artificial intelligence, it is necessary to have a realistic full-scale model of the renal vasculature. We propose a hybrid framework to build subject-specific models of the renal vascular network by using semi-automated segmentation of large arteries and estimation of cortex area from a micro-CT scan as a starting point, and by adopting the Global Constructive Optimization algorithm for generating smaller vessels. Our results show a statistical correspondence between the reconstructed data and existing anatomical data obtained from a rat kidney with respect to morphometric and hemodynamic parameters.
description: 19 pages, 5 figures (excluding references and supplementary) submitted to Communications Biology
Additional file 1 of Perspectives and experiences of patients and healthcare professionals with geriatric assessment in chronic kidney disease: a qualitative study
Creators: name: Voorend, Carlijn G. N.
name: Berkhout-Byrne, Noeleen C.
name: Meuleman, Yvette
name: Mooijaart, Simon P.
name: Bos, Willem Jan W.
name: Buren, Marjolijn Van
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 1. Semi-structured interview topic guide. Semi-structured interview topic guide (questionnaire) developed for this research and used in the focus group discussions.
A comparison of preprocessing methods for solar force-free magnetic field extrapolation
Creators: name: Fuhrmann, M.
name: Seehafer, N.
name: Valori, G.
name: Wiegelmann, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Extrapolations of solar photospheric vector magnetograms into three-dimensional magnetic fields in the chromosphere and corona are usually done under the assumption that the fields are force-free. The field calculations can be improved by preprocessing the photospheric magnetograms. We compare two preprocessing methods presently in use, namely the methods of Wiegelmann et al. (2006) and Fuhrmann et al. (2007). The two preprocessing methods were applied to a recently observed vector magnetogram. We examine the changes in the magnetogram effected by the two preprocessing algorithms. Furthermore, the original magnetogram and the two preprocessed magnetograms were each used as input data for nonlinear force-free field extrapolations by means of two different methods, and we analyze the resulting fields. Both preprocessing methods managed to significantly decrease the magnetic forces and magnetic torques that act through the magnetogram area and that can cause incompatibilities with the assumption of force-freeness in the solution domain. Both methods also reduced the amount of small-scale irregularities in the observed photospheric field, which can sharply worsen the quality of the solutions. For the chosen parameter set, the Wiegelmann et al. method led to greater changes in strong-field areas, leaving weak-field areas mostly unchanged, and thus providing an approximation of the magnetic field vector in the chromosphere, while the Fuhrmann et al. method weakly changed the whole magnetogram, thereby better preserving patterns present in the original magnetogram. Both preprocessing methods raised the magnetic energy content of the extrapolated fields to values above the minimum energy, corresponding to the potential field. Also, the fields calculated from the preprocessed magnetograms fulfill the solenoidal condition better than those calculated without preprocessing.
description: Accepted for Astron. Astrophys
The all-affected interests principle : a relational approach
Creators: name: Smith, Cole Jacob
Publisher: name: University of British Columbia
Year: 2022

description: In this paper, I offer a defence of the all-affected interests principle based largely on an interpretation offered by Mark Warren (2017a). Problematizing the democratic boundary problem and arguing in favour of a relational account of affectedness based on essential interests, I argue that the principle admits a tremendous diversity in its potential applications, and that what it requires primarily are participatory practices governing relationships of interdependency. In the second half of the paper, I discuss this with particular reference to environmental and land governance issues, and watersheds specifically. Because these cases often involve situations where coercive political structures either do not exist, or are poorly configured to respond to the interests of residents in an affected environment, I suggest that the AAIP is best positioned to give a positive account of democratic self-governance. I highlight the case of the Cowichan Watershed Board as an emerging institution illustrating a potential application of the AAIP.
Formation and Evolution of the Disk System of the Milky Way: [alpha/Fe] Ratios and Kinematics of the SEGUE G-Dwarf Sample
Creators: name: Lee, Young Sun
name: Beers, Timothy C.
name: An, Deokkeun
name: Ivezic, Zeljko
name: Just, Andreas
name: Rockosi, Constance M.
name: Morrison, Heather L.
name: Johnson, Jennifer A.
name: Schonrich, Ralph
name: Bird, Jonathan
name: Yanny, Brian
name: Harding, Paul
name: Rocha-Pinto, Helio J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We employ measurements of the [alpha/Fe] ratio derived from low-resolution (R~2000) spectra of 17,277 G-type dwarfs from the SEGUE survey to separate them into likely thin- and thick-disk subsamples. Both subsamples exhibit strong gradients of orbital rotational velocity with metallicity, of opposite signs, -20 to -30 km/s/dex for the thin-disk and +40 to +50 km/s/dex for the thick-disk population. The rotational velocity is uncorrelated with Galactocentric distance for the thin-disk subsample, and exhibits a small trend for the thick-disk subsample. The rotational velocity decreases with distance from the plane for both disk components, with similar slopes (-9.0 {\pm} 1.0 km/s/kpc). Thick-disk stars exhibit a strong trend of orbital eccentricity with metallicity (about -0.2/dex), while the eccentricity does not change with metallicity for the thin-disk subsample. The eccentricity is almost independent of Galactocentric radius for the thin-disk population, while a marginal gradient of the eccentricity with radius exists for the thick-disk population. Both subsamples possess similar positive gradients of eccentricity with distance from the Galactic plane. The shapes of the eccentricity distributions for the thin- and thick-disk populations are independent of distance from the plane, and include no significant numbers of stars with eccentricity above 0.6. Among several contemporary models of disk evolution we consider, radial migration appears to have played an important role in the evolution of the thin-disk population, but possibly less so for the thick disk, relative to the gas-rich merger or disk heating scenarios. We emphasize that more physically realistic models and simulations need to be constructed in order to carry out the detailed quantitative comparisons that our new data enable.
description: Accepted for publication in ApJ, 18 pages, 12 figures, 2 tables, emulateapj format
title: ÐÑÐ¾ÐµÐºÑ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ ÑÑÐ°ÑÑÐ°Ð¿Ð° Ð¼ÐµÐ´Ð¸Ð°ÑÐµÑÑÑÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Project of a start-up (media)
Creators: name: ÐÑÐµÐ², ÐÐ»ÐµÐºÑÐ°Ð½Ð´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: 2023
Subjects: Ð¼ÐµÐ´Ð¸Ð°ÑÐµÑÑÑÑ
Ð¼ÐµÐ´Ð¸Ð°-Ð¼ÐµÐ½ÐµÐ´Ð¶Ð¼ÐµÐ½Ñ
Ð¼ÐµÑÐ¾Ð´Ð¾Ð»Ð¾Ð³Ð¸Ñ lean startup
ÑÑÐ°ÑÑÐ°Ð¿
Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÐ°ÑÑÐ°Ð¿Ð°
media news outlet
media management
lean startup method
start-up managment

description: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð¿ÑÐ¾ÐµÐºÑ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ ÑÑÐ°ÑÑÐ°Ð¿Ð°-Ð¼ÐµÐ´Ð¸Ð°ÑÐµÑÑÑÑÐ°, Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½ ÑÑÐ½Ð¾Ðº Ð¼ÐµÐ´Ð¸Ð°ÑÐµÑÑÑÑÐ¾Ð² Ð² Ð Ð¤, Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ñ ÑÑÐ°Ð¿Ñ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÑÐ°ÑÑÐ°Ð¿Ð°,Â  ÑÐ¾Ð·Ð´Ð°Ð½ Ð¿Ð»Ð°Ð½ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¿ÑÐ¾ÐµÐºÑÐ°, Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÑÐµÐ±ÑÐµÐ¼ÑÑ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»ÑÐ½ÑÑ Ð¸ ÑÐµÐ»Ð¾Ð²ÐµÑÐµÑÐºÐ¸Ñ ÑÐµÑÑÑÑÐ¾Ð². ÐÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð° Ð¼ÐµÑÐ¾Ð´Ð¾Ð»Ð¾Ð³Ð¸Ñ Lean Startup. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ñ ÑÐ¸ÑÐºÐ¸ Ð¿ÑÐ¾ÐµÐºÑÐ°, Ð¿ÑÐ¾ÐµÐºÑ Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð»Ð¾Ð³Ð¸ÐºÐ¾-ÑÑÑÑÐºÑÑÑÐ½Ð¾Ð³Ð¾ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð° Ð¸ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²Ð»ÐµÐ½Ð¾ ÑÐ¸Ð½Ð°Ð½ÑÐ¾Ð²Ð¾Ðµ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ. ÐÐ´Ð½Ð¸Ð¼ Ð¸Ð· Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÐ¾Ð² Ð´Ð»Ñ Ð³ÐµÐ½ÐµÑÐ°ÑÐ¸Ð¸ ÑÐ¾Ð´ÐµÑÐ¶Ð¸Ð¼Ð¾Ð³Ð¾ ÑÐ²Ð»ÑÐµÑÑÑ Ð¸ÑÐºÑÑÑÑÐ²ÐµÐ½Ð½ÑÐ¹ Ð¸Ð½ÑÐµÐ»Ð»ÐµÐºÑ.Â 
description: A project of a startup focusing on creating an online news outlet was created. Survey and analysis of the media market in RF was carried out. Lean startup method was used for creating and managing the startup. Risk assessment and financial validation was carried out. Logical-structural approach was used for planning. One of the instruments used for the content creation for the media outlet is AI.Â
An asymptotically Gaussian bound on the Rademacher tails
Creators: name: Pinelis, Iosif
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: Primary: 60E15, secondary: 60F10, 62G10, 62G15, 60G50, 62G35

description: An explicit upper bound on the tail probabilities for the normalized Rademacher sums is given. This bound, which is best possible in a certain sense, is asymptotically equivalent to the corresponding tail probability of the standard normal distribution, thus affirming a longstanding conjecture by Efron. Applications to sums of general centered uniformly bounded independent random variables and to the Student test are presented.
description: The discussion and references are expanded; the proofs of Lemmas 2.2 and 2.3 are simplified
Zero-point quantum fluctuations and dark energy
Creators: name: Maggiore, Michele
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the Hamiltonian formulation of General Relativity the energy associated to an asymptotically flat space-time with metric $g_{μν}$ is related to the Hamiltonian $H_{GR}$ by $E=H_{GR}[g_{μν}]-H_{\rm GR}[η_{μν}]$, where the subtraction of the flat-space contribution is necessary to get rid of an otherwise divergent boundary term. This classic result indicates that the energy associated to flat space does not gravitate. We apply the same principle to study the effect of zero-point fluctuations of quantum fields in cosmology, proposing that their contribution to the cosmic expansion is obtained computing the vacuum energy of quantum fields in a FRW space-time with Hubble parameter $H(t)$ and subtracting from it the flat-space contribution. [...] After renormalization, this produces a renormalized vacuum energy density $\sim M^2H^2(t)$, where $M$ is the scale where quantum gravity sets is, so for $M$ of order of the Planck mass a vacuum energy density of the order of the critical density can be obtained without any fine tuning. The counterterms can be chosen so that the renormalized energy density and pressure satisfy $p=wρ$, with $w$ a parameter that can be fixed by comparison to the observed value, so in particular one can chose $w=-1$. An energy density evolving in time as $H^2(t)$ is however observationally excluded as an explanation for the dominant dark energy component which is responsible for the observed acceleration of the universe. We rather propose that zero-point vacuum fluctuations provide a new subdominant "dark" contribution to the cosmic expansion that, for a UV scale $M$ slightly smaller than the Planck mass, is consistent with existing limits and potentially detectable.
description: 16 pages, 1 figure; v3: conceptual improvements. References added. To appear in Phys. Rev. D
Nonparametric galaxy morphology from stellar and nebular emission with the CALIFA sample
Creators: name: Nersesian, Angelos
name: Zibetti, Stefano
name: D'Eugenio, Francesco
name: Baes, Maarten
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a nonparametric morphology analysis of the stellar continuum and nebular emission lines for a sample of local galaxies. We explore the dependence of the various morphological parameters on wavelength and morphological type. Our goal is to quantify the difference in morphology between the stellar and nebular components. We derive the nonparametric morphological indicators of 364 galaxies from the CALIFA Survey. To calculate those indicators, we apply the StatMorph package on the high-quality integral field spectroscopic data cubes, as well as to the most prominent nebular emission-line maps, namely [OIII]$λ$5007, H$α$, and [NII]$λ$6583. We show that the physical size of galaxies, M$_{20}$ index, and concentration have a strong gradient from blue to red optical wavelengths. We find that the light distribution of the nebular emission is less concentrated than the stellar continuum. A comparison between the nonparametric indicators and the galaxy physical properties revealed a very strong correlation of the concentration with the specific star-formation rate and morphological type. Furthermore, we explore how the galaxy inclination affects our results. We find that edge-on galaxies show a more rapid change in physical size and concentration with increasing wavelength due to the increase in optical free path. We conclude that the apparent morphology of galaxies originates from the pure stellar distribution, but the morphology of the ISM presents differences with respect to the morphology of the stellar component. Our analysis also highlights the importance of dust attenuation and galaxy inclination in the measurement of nonparametric morphological indicators, especially in the the wavelength range 4000-5000 Å.
Additional file 1 of Impact of replacing powdered gloves with powder-free gloves on hand-hygiene compliance among healthcare workers of an intensive care unit: a quasi-experimental study
Creators: name: Menegueti, Mayra Gonçalves
name: Bellissimo-Rodrigues, Fernando
name: Ciol, Marcia A.
name: Auxiliadora-Martins, Maria
name: Basile-Filho, Anibal
name: Canini, Silvia Rita Marin Da Silva
name: Elucir Gir
name: Laus, Ana Maria
Publisher: name: figshare
Year: 2021
Subjects: subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 1. Table S1: Demographic aspects of the healthcare workers participating in the study. Table S2: Hand-hygiene compliance percentages for each opportunity category with powdered latex and powder-free nitrile gloves.
Effect of manipulation of leucocyte and platelet rich fibrin on quality and quantity of the membrane
Creators: name: Wintermute, Robin Marya
Publisher: name: University of British Columbia
Year: 2022

description: Background: Leucocyte and platelet rich fibrin (L-PRF) is a membrane containing fibrin matrix with platelets and leucocytes made via blood centrifugation. Molecules released from L-PRF have been shown to regulate wound healing-related gene expression in human gingival fibroblasts. It is not well-understood how the length of time elapsed between blood collection and centrifugation affects the final L-PRF. We hypothesized that greater elapsed time would be associated with smaller L-PRF membranes, containing fewer leucocytes and platelets, and altered expression of gingival fibroblast wound healing-related genes. Methods: Blood samples, collected from 18 healthy individuals, were centrifuged immediately (T-0) or after 1-, 2-, 4-, and 6-minute storage. Each L-PRF was measured. L-PRF from T-0 and T-6 from 11 of the individuals were each incubated 48 hours in cell culture medium at 37°C to create L-PRF “releaseate”. Human gingival fibroblasts were incubated 48 hours with releaseate, followed by RNA isolation and real-time polymerase chain reaction to measure the expression of select genes. Additional pairs of membranes from T-0 and T-6 were used for visualization of leucocyte nuclei for counting. Platelets were additionally identified by immunostaining. Results: Immediate centrifugation (T-0) resulted in the largest membrane for each participant, on average 26% larger than T-6 membranes, with individual variation in membrane mass. The mean mass for the T-0 membranes was 1.805 g (1.252 g to 2.322 g) compared to 1.283 g (0.570 g to 1.858 g) for the T-6 membranes (p < 0.001). While individual L-PRF releaseates showed variability in gingival fibroblast responses, there was a significant difference between the mean relative mRNA expression of T-0 samples compared to T-6 samples for fibroblast growth factor 2, vascular endothelial growth factor alpha (p < 0.001), and matrix metalloproteinase 3 (p < 0.03). The quantities of leucocytes and platelets were higher in T-0 samples compared to the T-6 samples (p < 0.01). Conclusions: Longer elapsed time between blood collection and centrifugation resulted in smaller L-PRF membranes. Storing blood before centrifugation likely lowers the L-PRF’s biological effect. Immediate centrifugation appears to result in optimal quantitative and qualitative properties of L-PRF for clinical use.
Short-time particle motion in one and two-dimensional lattices with site disorder
Creators: name: Cui, Bingyu
name: Sukharev, Maxim
name: Nitzan, Abraham
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Like a free particle, the initial growth of a broad (relative to lattice spacing) wavepacket placed on an ordered lattice is slow (zero initial slope) and becomes linear in $t$ at long time. On a disordered lattice, the growth is inhibited at long time (Anderson localization). We consider site disorder with nearest-neighbor hopping on 1- and 2-dimensional systems, and show via numerical simulations supported by the analytical study that the short time growth of the particle distribution is faster on the disordered lattice than on the ordered one. Such faster spread takes place on time and length scale that may be relevant to the exciton motion in disordered systems.
Instability of rotating black hole in a limited form of $f(R)$ gravity
Creators: name: Myung, Yun Soo
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the stability of $f(R)$-rotating (Kerr) black hole obtained from a limited form of $f(R)$ gravity. In order to avoid the difficulty of handling fourth order linearized equations, we transform this form of $f(R)$ gravity into the scalar-tensor theory by introducing two auxiliary scalars. In this case, the linearized curvature scalar equation leads to a massive scalaron equation. It turns out that the $f(R)$-rotating black hole is unstable because of the superradiant instability known as the black-hole bomb idea.
description: 14 pages, no figure, title changed slightly, version to appear in PRD
Characteristics of Real Futures Trading Networks
Creators: name: Wang, Junjie
name: Zhou, Shuigeng
name: Guan, Jihong
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: Futures trading is the core of futures business, and it is considered as one of the typical complex systems. To investigate the complexity of futures trading, we employ the analytical method of complex networks. First, we use real trading records from the Shanghai Futures Exchange to construct futures trading networks, in which nodes are trading participants, and two nodes have a common edge if the two corresponding investors appear simultaneously in at least one trading record as a purchaser and a seller respectively. Then, we conduct a comprehensive statistical analysis on the constructed futures trading networks. Empirical results show that the futures trading networks exhibit features such as scale-free behavior with interesting odd-even-degree divergence in low-degree regions, small-world effect, hierarchical organization, power-law betweenness distribution, disassortative mixing, and shrinkage of both the average path length and the diameter as network size increases. To the best of our knowledge, this is the first work that uses real data to study futures trading networks, and we argue that the research results can shed light on the nature of real futures business.
description: 18 pages, 9 figures. Final version published in Physica A
Prognostic value of main pulmonary artery diameter to ascending aorta diameter ratio in patients with advanced heart failure
Creators: name: Dogan, Cem
name: Bayram, Zubeyde
name: Efe, Süleyman Cagan
name: Acar, Rezzan Deniz
name: Tanboga, Ibrahim Halil
name: Karagoz, Ali
name: Havan, Nuri
name: Ozer, Tanıl
name: Uslu, Abdulkair
name: Kırali, Mehmet Kaan
name: Kaymaz, Cihangir
name: Ozdemir, Nihal
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: In this study we assessed the prognostic value of main pulmonary artery diameter and its ratio to ascending aorta diameter (P/Ao ratio) in advanced heart failure patients. Patients with advanced heart failure who were candidates for heart transplantation were retrospectively evaluated. The clinical information, cardiac catheterisation results, and computed tomography images were gathered from institutional database system. The observed and predicted probabilities for survival were analysed in a nomogram. The P/Ao ratio was found to be a strong predictor for MACE both in traditional multivariable Cox proportional hazard regression modelling (increase in P/Ao ratio per 2 SD, HR:2.72, 95% CI 1.14–6.48, p = 0.024) and ridge regression analysis (increase in P/Ao ratio per 2SD, HR:3.45, 95% CI 1.53–7.74, p = 0.003). Prediction model showed statistically significant correlation between the observed and predicted probabilities for 1-year survival. In patients with advanced heart failure, computed tomography derived P/Ao ratio might be a prognostic predictor during follow up.
Unusual coercivity and zero field stabilization of fully saturated magnetization in single crystals of LaCrGe$_3$
Creators: name: Xu, M.
name: Bud'ko, S. L.
name: Prozorov, R.
name: Canfield, P. C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: LaCrGe$_3$ is an itinerant, metallic ferromagnet with a Curie temperature ($T_C$) of $\sim$ 86 K. Whereas LaCrGe$_3$ has been studied extensively as a function of pressure as an example of avoided ferromagnetic quantum criticality, questions about its ambient pressure ordered state remain; specifically, whether there is a change in the nature of the ferromagnetically ordered state below $T_C$ $\sim$ 86 K. We present anisotropic $M$($H$) isotherms, coupled with anisotropic AC susceptibility data, and demonstrate that LaCrGe$_3$ has a remarkable, low temperature coercivity associated with exceptionally sharp, complete magnetization reversals to and from fully polarized states. This coercivity is temperature dependent, it drops to zero in the 40 - 55 K region and reappears in the 70 - 85 K regions. At low temperatures LaCrGe$_3$ has magnetization loops and behavior that has previously associated with micromagnetic/nanocrystalline materials, not bulk, macroscopic samples.
description: 7+2 pages and 7+5 figures
Dissecting ionic effects of soil salinity on Canadian native and hybrid willows (Salix spp.)
Creators: name: Huang, Xinyi
Publisher: name: University of British Columbia
Year: 2022

description: Among all the stressors on global agricultural systems, soil salinity and salinization is arguably one of the most significant and an ever increasing problem. Traditionally, sodium chloride is the salt employed for studying salt stress in plants, but on the Canadian prairie regions, sulphates are the predominant salts that cause osmotic imbalance and specific ion toxicities, and subsequently induce oxidative damage in plants. Willows (Salix spp.) have been identified as potential candidate plants for multipurpose establishment on saline marginal fields. As a phytoremediation strategy, growing salt tolerant willows could improve biodiversity, quality, and productivity of soil and local ecosystems, while providing biomass production for a series of downstream agricultural and industrial applications. In order to investigate the salt tolerance among willows, and to dissect the ionic effects of different salt ions on plants, two greenhouse trials were conducted with mixed salt treatments in the first trial, as well as sodium and magnesium sulphate treatments in the second trial, with comparable salt levels at moderate and high salinity. A total of 20 commercial hybrid and 16 Canadian native willow genotypes were treated for 8 weeks in the first trial, of which a selection of 12 were further assessed for 12 weeks in the second trial. The genotypes were monitored for growth traits, and gas exchange during the trials. Elemental analyses of leaves and roots were performed via inductively coupled plasma mass spectrometry, and targeted metabolite profiling was used to quantify sugars, organic acids, amino acids, and glutathione in leaves by high performance liquid chromatography and spectrophotometry. Leaf samples of two genotypes, LAR-3, a sodium excluder, and MJW-2, a sodium accumulator, were selected for mRNA sequencing. Overall, it can be concluded that hybrid willows grew better at moderate salinity, while native willows are better suited for higher salinity conditions. Magnesium affected willows more significantly than sodium, largely inhibiting plant growth, mineral balance, photosynthesis, and primary metabolism. In addition, excess sulphate uptake and assimilation induced by sulphate salinity were witnessed. An assessment of growth, physiological, biochemical, and transcriptomic levels uncovered a more comprehensive view of salt responses, strategies, and defence mechanisms in willows.
A luminous dust-obscured Tidal Disruption Event candidate in a star forming galaxy at 42 Mpc
Creators: name: Panagiotou, Christos
name: De, Kishalay
name: Masterson, Megan
name: Kara, Erin
name: Calzadilla, Michael
name: Eilers, Anna-Christina
name: Frostig, Danielle
name: Karambelkar, Viraj
name: Kasliwal, Mansi
name: Lourie, Nathan
name: Meisner, Aaron M.
name: Simcoe, Robert A.
name: Stein, Robert
name: Zolkower, Jeffry
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: While the vast majority of Tidal Disruption Events (TDEs) has been identified by wide-field sky surveys in the optical and X-ray bands, recent studies indicate that a considerable fraction of TDEs may be dust obscured, and thus preferentially detected in the infrared (IR) wavebands. In this Letter, we present the discovery of a luminous mid-IR nuclear flare (termed WTP 14adbjsh) identified in a systematic transient search of archival images from the NEOWISE mid-IR survey. The source reached a peak luminosity of $L \simeq 10^{43} \text{erg s}^{-1}$ at 4.6 $μ$m in 2015, before fading in the IR with a TDE-like $F \propto t^{-5/3}$ decline, radiating a total of more than $ 3\times 10^{51}$ erg in the last 7 years. The transient event took place in the nearby galaxy NGC 7392, at a distance of around 42 Mpc; yet, no optical or X-ray flare is detected. We interpret the transient as the nearest TDE candidate detected in the last decade, which was missed at other wavelengths due to dust obscuration, hinting at the existence of TDEs that have been historically overlooked. Unlike most previously detected TDEs, the transient was discovered in a star forming galaxy, corroborating earlier suggestions that dust obscuration suppresses significantly the detection of TDEs in these environments. Our results demonstrate that the study of IR-detected TDEs is critical in order to obtain a complete understanding of the physics of TDEs, and to conclude whether TDEs occur preferentially in a particular class of galaxies.
description: 13 pages, 4 figures, accepted for publication by ApJL
Scalar mesons in a finite volume
Creators: name: Bernard, V.
name: Lage, M.
name: Meißner, U. -G.
name: Rusetsky, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Using effective field theory methods, we discuss the extraction of the mass and width of the scalar mesons f0(980) and a0(980) from the finite-volume spectrum in lattice QCD. In particular, it is argued that the nature of these states can be studied by invoking twisted boundary conditions, as well as investigating the quark mass dependence of the spectrum.
description: 18 pages, 3 figures
Hypergeometric type operators and their supersymmetric partners
Creators: name: Cotfas, Nicolae
name: Cotfas, Liviu Adrian
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 33C45, 81Q60

description: The generalization of the factorization method performed by Mielnik [J. Math. Phys. {\bf 25}, 3387 (1984)] opened new ways to generate exactly solvable potentials in quantum mechanics. We present an application of Mielnik's method to hypergeometric type operators. It is based on some solvable Riccati equations and leads to a unitary description of the quantum systems exactly solvable in terms of orthogonal polynomials or associated special functions.
description: New examples concerning the Poschl-Teller, Morse, Scarf, Coulomb, Rosen-Morse and Eckart type potentials have been added
What Emotion Facial Expressions Tell Us About the Health of Others
Creators: name: Hareli, Shlomo
name: David, Or
name: Hess, Ursula
Publisher: name: Humboldt-Universität zu Berlin
Year: 2020
Subjects: subject: age stereotypes
subject: facial expressions
subject: COVID-19
subject: health perception
subject: emotions
subject: 150 Psychologie

description: To avoid contagion, we need information about the health status of those whom we engage with. This is especially important when we have cause for concern that the other is indeed sick, such as is the case during the world-wide outbreak of the coronavirus in 2020. In three studies, one conducted several years before the pandemic, and two during the pandemic, we showed that facial expressions of emotions are used as signals of health status. Specifically, happy expressers are perceived as healthier than expressers showing negative emotions or neutrality (Studies 1–3), whereas anger was interpreted as a signal of ill health (Study 3). Importantly, however, facial expressions affected health perception only when there was a prior reason to suspect ill health. This was the case for older expressers before and after the pandemic for whom age-related stereotypes set expectations of ill health and for all ages during a wide-spread pandemic, which extends this suspicion to everyone. In Study 3, we showed that the effect of emotion expressions was also generalized to the physical distance that the observer wishes to keep from the expresser. Overall, this research is the first to show a role of emotion expressions in informing health perception.
Additional file 1 of Increases in social support co-occur with decreases in depressive symptoms and substance use problems among adults in permanent supportive housing: an 18-month longitudinal study
Creators: name: Zhengqi Tan
name: Mun, Eun-Young
name: Uyen-Sa D. T. Nguyen
name: Walters, Scott T.
Publisher: name: figshare
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1. Supplemental table for measurement model fit indices and diagrams for measurement models and latent growth curve models.
Reaction dynamics on amorphous solid water surfaces using interatomic machine learned potentials. Microscopic energy partition revealed from the P + H -> PH reaction
Creators: name: Molpeceres, Germán
name: Zaverkin, Viktor
name: Furuya, Kenji
name: Aikawa, Yuri
name: Kästner, Johannes
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Energy redistribution after a chemical reaction is one of the few mechanisms to explain the diffusion and desorption of molecules which require more energy than the thermal energy available in quiescent molecular clouds (10 K). This energy distribution can be important in phosphorous hydrides, elusive yet fundamental molecules for interstellar prebiotic chemistry. We studied the reaction dynamics of the \ce{P + H -> PH} reaction on amorphous solid water, a reaction of astrophysical interest, using \emph{ab-initio} molecular dynamics with atomic forces evaluated by a neural network interatomic potential. We found that the exact nature of the initial phosphorous binding sites is less relevant for the energy dissipation process because the nascent PH molecule rapidly migrates to sites with higher binding energy after the reaction. Non-thermal diffusion and desorption-after-reaction were observed and occurred early in the dynamics, essentially decoupled from the dissipation of the chemical reaction energy. From an extensive sampling of reactions on sites, we constrained the average dissipated reaction energy within the simulation time (50 ps) to be between 50 and 70 %. Most importantly, the fraction of translational energy acquired by the formed molecule was found to be mostly between 1 and 5 %. Including these values, specifically for the test cases of 2% and 5% of translational energy conversion, in astrochemical models, reveals very low gas-phase abundances of PH$_{x}$ molecules and reflects that considering binding energy distributions is paramount for correctly merging microscopic and macroscopic modelling of non-thermal surface astrochemical processes. Finally, we found that PD molecules dissipate more of the reaction energy. This effect can be relevant for the deuterium fractionation and preferential distillation of molecules in the interstellar medium.
description: Accepted for publication in Astronomy and Astrophysics
Использование кластерного метода анализа для оценки дифференциации областей республики Казахстан по уровню социального и экономического развития
Creators: name: Бекхожаева Айгуль Кожахметовна
name: Кушенова Майра Шаймаганбетовна
name: Жусупова Гульназ Аппазовна
name: Рахметбекова Жадра Шайзадакызы
Publisher: name: Московский экономический журнал
Year: 2019
Subjects: кластерный метод
область
показатель
развитие
оценка
экономический
дифференциация

description: В статье «Использование кластерного метода анализа для оценки дифференциации областей Республики Казахстан по уровню социального и экономического развития» проведен анализ социально-экономического развития регионов Казахстана с использованием кластерного метода анализа. Комплексная социальноэкономическая оценка состояния областей республики показала существенные различия в состоянии трудового и социально-экономического потенциалов. Предложенная дифференциация областей обосновала выбор необходимых форм и методов эффективного регулирования экономических и социальных процессов.
Higgs Mechanism for New Massive Gravity and Weyl Invariant Extensions of Higher Derivative Theories
Creators: name: Dengiz, Suat
name: Tekin, Bayram
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: New Massive Gravity provides a non-linear extension of the Fierz-Pauli mass for gravitons in 2+1 dimensions. Here we construct a Weyl invariant version of this theory. When the Weyl symmetry is broken, the graviton gets a mass in analogy with the Higgs mechanism. In (anti)-de Sitter backgrounds, the symmetry can be broken spontaneously, but in flat backgrounds radiative corrections, at the two loop level, break the Weyl symmetry a la Coleman-Weinberg mechanism. We also construct the Weyl invariant extensions of some other higher derivative models, such as the Gauss-Bonnet theory (which reduces to the Maxwell theory in three dimensions) and the Born-Infeld type gravities.
description: 9 pages, typos fixed, minor corrections, to appear in Phys. Rev. D
Decay of a photospheric transient filament at the boundary of a pore and the chromospheric response
Creators: name: Lindner, Philip
name: Schlichenmaier, Rolf
name: González, Nazaret Bello
name: Rodríguez, Jaime de la Cruz
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Intermediate stages between pores and sunspots are a rare phenomenon and can manifest with the formation of transient photospheric penumbral-like filaments. Although the magnetic field changes rapidly during the evolution of such filaments, they have not been shown to be connected to magnetic reconnection events yet. We analyzed observations of a pore in NOAA AR 12739 from the Swedish Solar Telescope including spectropolarimetric data of the Fe I 6173 Å and the Ca II 8542 Å line and spectroscopic data of the Ca II K 3934 Å line. The VFISV Milne-Eddington inversion code and the multi-line Non-LTE inversion code STiC were utilized to obtain atmospheric parameters in the photosphere and the chromosphere. Multiple filamentary structures of inclined magnetic fields are found in photospheric inclination maps at the boundary of the pore, although the pore never developed a penumbra. One of the filaments shows a clear counterpart in continuum intensity maps in addition to photospheric blueshifts. During its decay, a brightening in the blue wing of the Ca II 8542 Å line is observed. The Ca II K 3934 Å and the Ca II 8542 Å lines show complex spectral profiles in this region. Depth-dependent STiC inversion results using data from all available lines yield a temperature increase (roughly 1000 Kelvin) and bidirectional flows (magnitudes up to 8 km/s) at log tau=-3.5. The temporal and spatial correlation of the decaying filament (observed in the photosphere) to the temperature increase and the bidirectional flows in the high photosphere/low chromosphere suggests that they are connected. We propose scenarios in which magnetic reconnection happens at the edge of a rising magnetic flux tube in the photosphere. This leads to both the decay of the filament in the photosphere and the observed temperature increase and the bidirectional flows in the high photosphere/low chromosphere.
description: Paper accepted by "Astronomy & Astrophysics" on 02/03/2023