cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
CHEERS results on Mrk 573: Study of deep Chandra observations
Creators: name: Paggi, Alessandro
name: Wang, Junfeng
name: Fabbiano, Giuseppina
name: Elvis, Martin
name: Karovska, Margarita
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present results on Mrk 573 obtained as part of the CHandra survey of Extended Emission-line Regions in nearby Seyfert galaxies (CHEERS). Previous studies showed that this source features a biconical emission in the soft X-ray band closely related with the Narrow Line Region as mapped by the [O iii] emission line and the radio emission, though on a smaller scale; we investigate the properties of soft X-ray emission from this source with new deep Chandra observations. Making use of the subpixel resolution of the Chandra/ACIS image and PSF-deconvolution, we resolve and study substructures in each ionizing cone. The two cone spectra are fitted with photoionization model, showing a mildly photoionized phase diffused over the bicone. Thermal collisional gas at about ~ 1.1 keV and ~ 0.8 keV appears to be located between the nucleus and the "knots" resolved in radio observations, and between the "arcs" resolved in the optical images, respectively; this can be interpreted in terms of shock interaction with the host galactic plane. The nucleus shows a significant flux decrease across the observations indicating variability of the AGN, with the nuclear region featuring higher ionization parameter with respect to the bicone region. The long exposure allows us to find extended emission up to ~ 7 kpc from the nucleus along the bicone axis. Significant emission is also detected in the direction perpendicular to the ionizing cones, disagreeing with the fully obscuring torus prescribed in the AGN unified model, and suggesting instead the presence of a clumpy structure.
description: 38 pages, 15 figures, 8 tables, accepted for publication on ApJ
Trispectrum estimation in various models of equilateral type non-Gaussianity
Creators: name: Izumi, Keisuke
name: Mizuno, Shuntaro
name: Koyama, Kazuya
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate the shape correlations between trispectra in various equilateral non-Gaussian models, including DBI inflation, ghost inflation and Lifshitz scalars, using the full trispectrum as well as the reduced trispectum. We find that most theoretical models are distinguishable from the shapes of primordial trispectra except for several exceptions where it is difficult to discriminate between the models, such as single field DBI inflation and a Lifshitz scalar model. We introduce an estimator for the amplitude of the trispectrum, $g_{\rm NL} ^{equil}$ and relate it to model parameters in various models. Using constraints on $g_{\rm NL} ^{equil}$ from WMAP5, we give constraints on the model parameters.
description: 16 pages, 3 figures; (v2) minor revisions, reference added; (v3) typos in Tables corrected
title: Marginally outer trapped surfaces in the maximal Kruskal-Szekeres extension
Creators: name: Newhook, Liam Arthur
Publisher: name: Memorial University of Newfoundland
publisherIdentifier: https://ror.org/04haebc03
publisherIdentifierScheme: ROR
Year: 2024

description: For the last few decades and especially since the first detection of gravitational waves, black hole mergers have been a core research area in general relativity. However, the process by which two black hole horizons merge is only now starting to be wellunderstood. In numerical studies of apparent horizon evolution, self-intersecting marginally outer-trapped surfaces (MOTS) were found and play a key role [12]. Later a seemingly infinite number of self-intersectingMOTSs were found in Painlev´e–Gullstrand slices of the Schwarzschild solution [4]. Further work has shown that their existence is robust and not simply an artifact of that coordinate system [11]. This thesis presents results found when examining the maximal extension to the Schwarzschild black hole in Kruskal-Szekeres coordinates. In this system, two separate universes dynamically connect through a worm-hole and pass through a moment of time-symmetry before the worm-hole pinches off and they disconnect. In these time slices, self-intersecting MOTS are found which, among other things, straddle the Einstein-Rosen bridge extending into both universes. Of particular interest is the stability analysis of the numerical solvers used, exotic toroidal surfaces, and the MOTS stability operator.
Calculation of all elements of the Mueller matrix for scattering of light from a two-dimensional randomly rough metal surface
Creators: name: Letnes, Paul Anton
name: Maradudin, Alexei A.
name: Nordam, Tor
name: Simonsen, Ingve
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We calculate all the elements of the Mueller matrix, which contains all the polarization properties of light scattered from a two-dimensional randomly rough lossy metal surface. The calculations are carried out for arbitrary angles of incidence by the use of nonperturbative numerical solutions of the reduced Rayleigh equations for the scattering of p- and s-polarized light from a two-dimensional rough penetrable surface. The ability to model polarization effects in light scattering from surfaces enables better interpretation of experimental data and allows for the design of surfaces which possess useful polarization effects.
description: 5 pages, 3 figures
69589: Somerville and the Great War (blog)
Creators: name: Project Team, Oxford At War
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Somerville College Archives will be commemorating the events of 1914 - 1918 through their 'Somerville and the Great War' blog. Regularly updated to reflect the real-time impact of the war on the College, including Somerville's role as a military hospital, the College's evacuation to Oriel and the wide variety of war work undertaken by alumni, students and staff, the archives reveal rarely explored aspects of life on the home front.
Phonon-assisted relaxation between hole states in quantum dot molecules
Creators: name: Gawarecki, Krzysztof
name: Machnikowski, Paweł
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study theoretically phonon-assisted relaxation and inelastic tunneling of holes in a double quantum dot. We derive hole states and relaxation rates from kp Hamiltonians and show that there is a finite distance between the dots where lifetimes of hole states are very long which is related to vanishing tunnel coupling. We show also that the light hole admixture to hole states can considerably affect the hole relaxation rates even though its magnitude is very small.
CONTROLE PARASITOLÓGICO SEMESTRAL EM OVINOS DA FAZENDA ESCOLA UNIAVAN
Creators: name: Nunes, Sara Sama
name: Quadros, Yara Schneider de
name: Goldoni, Rodrigo Capitanio
Publisher: name: Zenodo
Year: 2025
Subjects: controle
parasitologia
ovinos

description: Este trabalho tem como objetivo principal relatar o controle parasitológico semestral realizado na fazenda escola da Uniavan entre os meses de janeiro a junho de 2024.
Multidimensional Nature of Molecular Organic Conductors Revealed by Angular Magnetoresistance Oscillations
Creators: name: Dhakal, Pashupati
name: Yoshino, Harukazu
name: Oh, Jeong-Il
name: Kikuchi, Koichi
name: Naughton, Michael J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Angle dependent magnetoresistance experiments on organic conductors exhibit a wide range of angular oscillations associated with the dimensionality and symmetry of the crystal structure and electron energy dispersion. In particular, characteristics associated with 1, 2, and 3 dimensional electronic motion are separately revealed when a sample is rotated through different crystal planes in a magnetic field. Originally discovered in the TMTSF based conductors, these effects are particularly pronounced in the related system (DMET)2I3. Here, experimental and computational results for magnetoresistance oscillations in this material, over a wide range of magnetic field orientations, are presented in such a manner as to uniquely highlight this multidimensional behavior.The calculations employ the Boltzmann transport equation that incorporates the systems triclinic crystal structure, which allows for accurate estimates of the transfer integrals along the crystallographic axes, verifying the 1d, 2d and 3d nature of (DMET)2I3, as well as crossovers between dimensions in the electronic behavior.
Additional file 14 of Identification of 11 candidate structured noncoding RNA motifs in humans by comparative genomics
Creators: name: Hou, Lijuan
name: Xie, Jin
name: Wu, Yaoyao
name: Wang, Jiaojiao
name: Duan, Anqi
name: Ao, Yaqi
name: Liu, Xuejiao
name: Yu, Xinmei
name: Yan, Hui
name: Perreault, Jonathan
name: Li, Sanshu
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 14 Fig. S3. Genomic locus diagram.
Infrared spectroscopy of hydrocarbon aerosols at cryogenic temperatures with application to Titan
Creators: name: Lang, Eva Kathrin
Publisher: name: University of British Columbia
Year: 2013

description: The atmosphere of Saturn's moon Titan features hydrocarbon clouds, for example those composed of methane and ethane, the properties of which are not completely understood. To improve the understanding of Titan's clouds, studies of the phase behavior of pure and mixed hydrocarbon aerosols were carried out. The aerosol particles were generated in a bath gas cooling cell under conditions representative of Titan's lower atmosphere (78 K, 500-1000 mbar). The freezing and crystallization behavior of the aerosol particles were studied using rapid-scan infrared spectroscopy and the observed phases identified by comparison with thin film measurements. Under the studied conditions ethane forms long-lived supercooled liquid droplets that are stabilized against freezing by the incorporation of methane and nitrogen gas, which are ubiquitous in Titan's atmosphere. The extent of the stabilization increases with increasing methane partial pressure. The studies demonstrate that supercooled ethane droplets could have an appreciable lifetime and might play an important role in the condensation of methane in Titan's atmosphere. The influence of the presence of aerosols of other atmospheric components (acetylene, carbon dioxide, and water) on the freezing of supercooled hydrocarbon droplets was studied in heterogeneous nucleation experiments. The aerosols were found to accelerate the crystallization of hydrocarbon aerosols to differing degrees depending on their composition. Numerous hydrocarbons exist as minor atmospheric components and might be of importance for Titan's clouds and lakes. Propane was found to form long-lived supercooled droplets at 78 K, which did not crystallize even in the presence of heterogeneous nuclei. n-Butane and n-pentane initially form amorphous-annealed particles. n-Butane particles were observed to undergo two phase transitions and n-pentane particles one. The surface and volume nucleation rate constants, JV and JS, were determined for all three of these transitions and are likely to be important for models of Titan's clouds. Taken together, these studies provide a detailed picture of the phase behavior of hydrocarbon aerosols under conditions relevant to Titan. This is important for understanding cloud formation and the radiation budget on Titan. Furthermore, the recorded spectroscopic signatures provide a reference for astrophysical studies concerned with the detection and characterization of aerosols in Titan's atmosphere.
An ALMA View of Dense Filamentary Fan-shaped Molecular Clouds in the Large  Magellanic Cloud: Detailed Velocity Field Analysis and Comparison to an MHD Simulation
Creators: name: Yamada, Rin
name: Fukui, Yasuo
name: Tokuda, Kazuki
name: Tsuge, Kisetsu
name: Wong, Tony
name: Sewiło, Marta
name: indebetouw, remy
name: Chen, Rosie
name: Mao, Tamashiro
name: Tachihara, Kengo
Publisher: name: Zenodo
Year: 2023

description: A supersonic collision of atomic and/or molecular clouds is a major mechanism of high-mass star formation. Such a collision is numerically simulated by magnetohydrodynamics to form the dense filamentary structures of molecular clouds(Inoue et al. 2018), and the observational test has been an issue of keen interest. We test this scheme of high-mass star formation in N159 in the molecular ridge region of the LMC because the 100 km/s atomic gas collision driven by the tidal interaction with the SMC has been reported (Fukui et al. 2017). Especially in N159E-Papillon and N159W-S, dense filamentary fan-shaped molecular clouds with lengths and opening angles of ~5 pc and ~30 deg, respectively, have masses of ~104 Mo (Fukui et al. 2019; Tokuda et al. 2019). However, the velocity fields of these regions have not been fully understood. We analyzed the ALMA Cycle 4 12CO and 13CO data in the N159E-Papillon, N159W-S, and N159W-N regions with a spatial resolution of 0.2 arcsec, particularly focusing on velocity fields of filamentary clouds. In the position-velocity cut perpendicular to the symmetric axis of the fan-shape in the three regions, the 12CO and 13CO gas indicate "cone-like" three dimensional distribution, which is in good agreement with Inoue et al. (2018).
Satellite downlink scheduling problem: A case study
Creators: name: Karapetyan, Daniel
name: Mitrovic-Minic, Snezana
name: Malladi, Krishna T.
name: Punnen, Abraham P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optimization and Control (math.OC)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: The synthetic aperture radar (SAR) technology enables satellites to efficiently acquire high quality images of the Earth surface. This generates significant communication traffic from the satellite to the ground stations, and, thus, image downlinking often becomes the bottleneck in the efficiency of the whole system. In this paper we address the downlink scheduling problem for Canada's Earth observing SAR satellite, RADARSAT-2. Being an applied problem, downlink scheduling is characterised with a number of constraints that make it difficult not only to optimise the schedule but even to produce a feasible solution. We propose a fast schedule generation procedure that abstracts the problem specific constraints and provides a simple interface to optimisation algorithms. By comparing empirically several standard meta-heuristics applied to the problem, we select the most suitable one and show that it is clearly superior to the approach currently in use.
description: 23 pages
Spinodal fractionation in a polydisperse square well fluid
Creators: name: Williamson, John J.
name: Evans, R. Mike L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using Kinetic Monte Carlo simulation, we model gas-liquid spinodal decomposition in a size-polydisperse square well fluid, representing a 'near-monodisperse' colloidal dispersion. We find that fractionation (demixing) of particle sizes between the phases begins asserting itself shortly after the onset of phase ordering. Strikingly, the direction of size fractionation can be reversed by a seemingly trivial choice between two inter-particle potentials which, in the monodisperse case, are identical -- we rationalise this in terms of a perturbative, equilibrium theory of polydispersity. Furthermore, our quantitative results show that Kinetic Monte Carlo simulation can provide detailed insight into the role of fractionation in real colloidal systems.
description: 7 pages, 7 figures, to be published in Phys. Rev. E
On Loops in Inflation III: Time Independence of zeta in Single Clock Inflation
Creators: name: Pimentel, Guilherme L.
name: Senatore, Leonardo
name: Zaldarriaga, Matias
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Studying loop corrections to inflationary perturbations, with particular emphasis on infrared factors, is important to understand the consistency of the inflationary theory, its predictivity and to establish the existence of the slow-roll eternal inflation phenomena and its recently found volume bound. In this paper we prove that the zeta correlation function is time-independent at one-loop level in single clock inflation. While many of the one-loop diagrams lead to a time-dependence when considered individually, the time-dependence beautifully cancels out in the overall sum. We identify two subsets of diagrams that cancel separately due to different physical reasons. The first cancellation is related to the change of the background cosmology due to the renormalization of the stress tensor. It results in a cancellation between the non-1PI diagrams and some of the diagrams made with quartic vertices. The second subset of diagrams that cancel is made up of cubic operators, plus the remaining quartic ones. We are able to write the sum of these diagrams as the integral over a specific three-point function between two very short wavelengths and one very long one. We then apply the consistency condition for this three-point function in the squeezed limit to show that the sum of these diagrams cannot give rise to a time dependence. This second cancellation is thus a consequence of the fact that in single clock inflation the attractor nature of the solution implies that a long wavelength zeta perturbation is indistinguishable from a trivial rescaling of the background, and so results in no physical effect on short wavelength modes.
description: 47 pages, 7 figures; v2: JHEP published version, typos and minor corrections
Holographic two-point functions for 4d log-gravity
Creators: name: Johansson, Niklas
name: Naseh, Ali
name: Zojer, Thomas
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compute holographic one- and two-point functions of critical higher-curvature gravity in four dimensions. The two most important operators are the stress tensor and its logarithmic partner, sourced by ordinary massless and by logarithmic non-normalisable gravitons, respectively. In addition, the logarithmic gravitons source two ordinary operators, one with spin-one and one with spin-zero. The one-point function of the stress tensor vanishes for all Einstein solutions, but has a non-zero contribution from logarithmic gravitons. The two-point functions of all operators match the expectations from a three-dimensional logarithmic conformal field theory.
description: 35 pages; v2: typos corrected, added reference; v3: shorter introduction, minor changes in the text in section 3, added reference; published version
Spectral properties of Luttinger liquids: A comparative analysis of regular, helical, and spiral Luttinger liquids
Creators: name: Braunecker, Bernd
name: Bena, Cristina
name: Simon, Pascal
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We provide analytic expressions for the Green's functions in position-frequency space as well as for the tunneling density of states of various Luttinger liquids at zero temperature: the standard spinless and spinful Luttinger liquids, the helical Luttinger liquid at the edge of a topological insulator, and the Luttinger liquid that appears either together with an ordering transition of nuclear spins in a one-dimensional conductor, or in spin-orbit split quantum wires in an external magnetic field. The latter system is often used to mimic a helical Luttinger liquid, yet we show here that it exhibits significantly different response functions and, to discriminate, we call it the spiral Luttinger liquid. We give fully analytic results for the tunneling density of state of all the Luttinger liquids as well as for most of the Green's functions. The remaining Green's functions are expressed by simple convolution integrals between analytic results.
description: 17 pages, 4 figures; corresponding to published version
Clarifying the Protective Purpose of s 18C: An Interests-Based Analysis of Australia's Racial Vilification Laws
Creators: name: SWANNIE, BILL JOHN
Publisher: name: Monash University
Year: 2021
Subjects: subject: Law
subject: FOS: Law

description: This thesis examines the nature and purpose of the racial vilification laws in the Racial Discrimination Act 1975 (Cth) (RDA). Commonly, vilification laws seek to maintain public order and serve broad public purposes. However, the RDA provisions are distinct in that they seek to protect the interests of members of groups targeted by vilification. Specifically, they seek to protect personal dignity and autonomy. This has significant implications, in terms of the political legitimacy of the provisions, how they should be interpreted by courts, and what forms of redress should be available for victims of vilification
Period functions and cotangent sums
Creators: name: Bettin, Sandro
name: Conrey, Brian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11M06, 11M41, 11L99 (Secondary)

description: We investigate the period function of $\sum_{n=1}^\inftyσ_a(n)\e{nz}$, showing it can be analytically continued to $|\arg z|
description: 32 pages, 5 figures, revised version. To appear in Algebra & Number Theory
Coutumes générales du Duché de Lorraine és Bailliages de Nancy, Vôges et Allemagne. Commentées par Abraham Fabert, maitre echevin de Metz. [Notes de Dominique Mathieu de Moulon, Conseiller d'Etat, Procureur general es Lorraine et Barrois]
Creators: name: Fabert, Abraham (1560?-1638). Auteur
Year: 1721
Subjects: subject: France
subject: Droit coutumier
subject: Lorraine
subject: Metz (Moselle)
subject: France
subject: Customary law
subject: Lorraine
subject: Metz (Moselle)

description: Date de publication incertaine
description: Frontispice gravé sur cuivre signé Houat dans chaque volume.
description: Texte imprimé des Coutumes générales d'A. Fabert et commentaires manuscrits de D. Mathieu de Moulon.
description: Feuillet 1 : Cachet "André Charlot, juge, Nancy".
description: Feuillet 3 recto : Avertissement sur les Notes de Dominique Mathieu de Moulon, Conseiller d'Etat, Procureur general es Lorraine et Barrois qui sont répandues dans le commentaire d'Abraham Fabert.
description: Feuillet 3 verso : Idée sur la réformation des coutumes qui régissent les Etats de son altesse royale.
description: Feuillet 23 : Les remarques d'Abraham Fabert, chevalier, Sieur de Moulins, et Maistre-eschevin de Metz. Sur les coustumes generales du duché de Lorraine, és Bailliages de Nancy, Vosges, et Allemagne (début du texte imprimé)
High photovoltaic penetration at urban scale - H2020 e-shape pilot project
Creators: name: MENARD, Lionel
Publisher: name: GEO Knowledge Hub
Year: 2019
Subjects: Solar radiation
Urban
Photovoltaic
GHI
Copernicus Atmosphere Monitoring Service
CAMS
CAMS Radiation Service
E-shape
MINES ParisTech
ARMINES
Transvalor
SoDa
European Commission
H2020
Group on Earth Observation
GEO
EuroGEO
WPS
OGC
Renewable Energy Showcase
Renewable energy
Solar energy

description: Rooftop PV systems in urban areas are very interesting because they do not emit air pollutants nor GHGs during their exploitation, they produce electricity where this electricity is consumed and they add value to unused urban roofs and reduce urban heat island effect. But, due to complex shading effects in urban context (vegetation, surrounding buildings, superstructures of roofs, etc.) and local atmospheric and meteorological effects, their massive penetration in urban areas will induce a significant variability in space and in time in the energy injected in the electric grid. As far as the electric demand side is concerned, a detailed modelling of energy requirements from residential, commercial and industrial buildings with varying demand profiles for electricity is also required. Therefore there is a need, in urban area, for GIS-like tool for grid operators, urban planning decision makers, industries, aggregators for solar energy trading, citizen (PV self-consumption) and researchers. This GIS-tool is meant to provide an urban energy system modelling of distribution grids to plan, monitor and nowcast (i.e. and short term forecast) the spatiotemporal variability of the electric consumption on one hand and of the production of fleet of PV rooftop systems on the other hand.Acknowledgment:The e-shape project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement 820852.
Studies on encapsulation of pelletized biomass
Creators: name: Hashemi, Seyedeh Zahra
Publisher: name: University of British Columbia
Year: 2013

description: Hygroscopicity and dust generation are among major challenges to the safe and cost effective use of wood pellets. Wood pellets can rot and disintegrate during storage due to the moisture adsorption from humid environment. In British Columbia, pellets are transported by rail from inland manufacturing plants to a shipping port and stored in silos. At the ports, pellets are loaded from the silo on to the ocean vessel for transport to overseas. Loading is stopped during rain because wood pellets disintegrate when they come into contact with water. The lost revenue from loading shutdown during rain can be large. Furthermore, breakage of wood pellets during handling and storage causes dustiness. Dust and fines may cause adverse health effect, fire, and explosion in storage and silos. Encapsulation of wood pellets with a hydrophobic membrane or surface modification can be a good way to increase water repellent capacity of wood pellets, and avoid dust generation. In this research, commercial wood pellets were coated with a wax solution, linseed oil, cellulose acetate, canola oil, etc. The treated pellets were either dipped in water or exposed to humid environment. The results showed that the investigated liquid coatings increased the durability of wood pellets in water. However, the tested liquid coatings did not decrease water vapor adsorption of pellets significantly. Surface treatments with O₂ etching and CF₄ plasma were applied to render wood pellets hydrophobic. It was demonstrated that CF₄ plasma treatment increased water repellency of wood pellets while O₂ etching without CF₄ deposition step made pellets more hydrophilic. Surface modification with O₂ etching combined with CF₄ deposition created the most hydrophobic surface when pellets were dipped in water. However this combined plasma treatment did not decrease water vapor adsorption from humid environment.
Hyperons and massive neutron stars: vector repulsion and SU(3) symmetry
Creators: name: Weissenborn, Simon
name: Chatterjee, Debarati
name: Schaffner-Bielich, Juergen
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: With the discovery of massive neutron stars such as PSR J1614-2230, the question has arisen whether exotic matter such as hyperons can exist in the neutron star core. We examine the conditions under which hyperons can exist in massive neutron stars. We consistently investigate the vector meson-hyperon coupling, going from SU(6) quark model to a broader SU(3) symmetry. We propose that the maximum neutron star mass decreases linearly with the strangeness content f_s of the neutron star core as M_max(f_s) = M_max(0) - 0.6 M_solar (f_s/0.1), which seems to be independent of the underlying nuclear equation of state and the vector baryon-meson coupling scheme. Thus, pulsar mass measurements can be used to constrain the hyperon fraction in neutron stars.
description: 13 pages, 10 figures
Additional file 11 of Conservation and trans-regulation of histone modification in the A and B subgenomes of polyploid wheat during domestication and ploidy transition
Creators: name: Lv, Zhenling
name: Li, Zijuan
name: Wang, Meiyue
name: Zhao, Fei
name: Zhang, Wenjie
name: Li, Changping
name: Gong, Lei
name: Zhang, Yijng
name: Mason, Annaliese S.
name: Liu, Bao
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 11: Table S10. Gene Ontology (GO) enrichment terms and genes used for GO analysis of H3K27me3 modification in TAA10 → ETW → XX329 ploidy transition process.
Tracing Artists' Research Practices
Creators: name: Deyneka, Alexandra
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020
Subjects: Artists
Information behavior
Art--Research

description: This study explores how visual artists conceptualize and apply research within their practice and considers the role of interdisciplinary inquiry in art research. Qualitative interviews were conducted with eight practicing artists and analyzed for emergent themes. The analysis of participants’ definitions and descriptions demonstrates how the artists synthesize information through research and reflection.
Are there any stable magnetic fields in barotropic stars?
Creators: name: Lander, S. K.
name: Jones, D. I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We construct barotropic stellar equilibria, containing magnetic fields with both poloidal and toroidal field components. We extend earlier results by exploring the effect of different magnetic field and current distributions. Our results suggest that the boundary treatment plays a major role in whether the poloidal or toroidal field component is globally dominant. Using time evolutions we provide the first stability test for mixed poloidal-toroidal fields in barotropic stars, finding that all these fields suffer instabilities due to one of the field components: these are localised around the pole for toroidal-dominated equilibria and in the closed-field line region for poloidal-dominated equilibria. Rotation provides only partial stabilisation. There appears to be very limited scope for the existence of stable magnetic fields in barotropic stars. We discuss what additional physics from real stars may allow for stable fields.
description: 16 pages, 11 figures. Some minor revision from v1, including a new figure; results unchanged. Now published in MNRAS
An investigation of social responsibility : the SRQS
Creators: name: Ty, Sophie Vararatana
Publisher: name: University of British Columbia
Year: 2013

description: This study presents the first validation data for a brief measure of student social responsibility, the Social Responsibility Quick Scale (SRQS). Teachers from two schools from the same school district implementing school-wide positive behaviour support (SWPBS) completed the SRQS for 360 students (51%) at the beginning (September 2011) and end of the school year (June 2012). Content validity procedures provided evidence that the items on the SRQS measure behaviours associated with student social responsibility. Factor analytic procedures demonstrated that the SRQS possesses a one-factor structure. Reliability procedures demonstrated strong internal consistency and test-retest reliability, as well as strong inter-item and corrected item-total correlations. Teacher ratings were consistently and significantly higher for female versus male students. No significant differences were found across grade level. Results are discussed in terms of implications for practice and future research.
Electronic charge redistribution in LaAlO$_3$(001) thin films deposited at SrTiO$_3$(001) substrate: First principles analysis and the role of stoichiometry
Creators: name: Sorokine, Alexandre
name: Bocharov, Dmitry
name: Piskunov, Sergei
name: Kashcheyevs, Vyacheslavs
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a comprehensive first-principles study of the electronic charge redistribution in atomically sharp LaAlO$_3$/SrTiO$_3$(001) heterointerfaces of both n- and p-types allowing for non-stoichiometric composition. Using two different computational methods within the framework of the density functional theory (linear combination of atomic orbitals and plane waves) we demonstrate that conducting properties of LaAlO$_3$/SrTiO$_3$(001) heterointerfaces strongly depend on termination of LaAlO$_3$ (001) surface. We argue that both the polar "catastrophe" and the polar distortion scenarios may be realized depending on the interface stoichiometry. Our calculations predict that heterointerfaces with a non-stoichiometrc film---either LaO-terminated n-type or AlO$_2$-terminated p-type---may exhibit the conductivity of n- or p-type, respectively, independently of LaAlO$_3$(001) film thickness.
description: Final version for PRB
Lameness and Associated Risk Factors in Cart Mules in Northwestern Ethiopia
Creators: name: Meseret Bazezew, Mersha 1 1 Chanie, 2Tewodros Tesfaye, 2Anteneh Kassa, 2Bekele Mekonnen And 2Nahom Wagaw
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2012

description: No abstract available for this resource
Flotation kinetics and separation selectivity of coal size fractions
Creators: name: LI, Yanfeng
name: ZHAO, Wenda
name: GUI, Xiahui
name: ZHANG, Xiaobo
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2013
Subjects: coal, flotation rate, combustible matter recovery, ash, particle size

description: Physicochemical Problems of Mineral Processing; 49; 387-395; ISSN 2084-4735
Analysis of large particle sizes using a machine vision system
Creators: name: ZHANG, Zelin
name: YANG, Jianguo
name: SU, Xiaolan
name: DING, Lihua
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2013
Subjects: machine vision, particle size distribution, equivalent ellipse, best-fit rectangle, representing analysis

description: Physicochemical Problems of Mineral Processing; 49; 397-405; ISSN 2084-4735
Markov properties for mixed graphs
Creators: name: Sadeghi, Kayvan
name: Lauritzen, Steffen
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Statistics (stat.OT)
subject: Statistics Theory (math.ST)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this paper, we unify the Markov theory of a variety of different types of graphs used in graphical Markov models by introducing the class of loopless mixed graphs, and show that all independence models induced by $m$-separation on such graphs are compositional graphoids. We focus in particular on the subclass of ribbonless graphs which as special cases include undirected graphs, bidirected graphs, and directed acyclic graphs, as well as ancestral graphs and summary graphs. We define maximality of such graphs as well as a pairwise and a global Markov property. We prove that the global and pairwise Markov properties of a maximal ribbonless graph are equivalent for any independence model that is a compositional graphoid.
description: Published in at http://dx.doi.org/10.3150/12-BEJ502 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Tangential varieties of Segre-Veronese varieties
Creators: name: Oeding, Luke
name: Raicu, Claudiu
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 14L30, 15A69, 15A72

description: We determine the minimal generators of the ideal of the tangential variety of a Segre-Veronese variety, as well as the decomposition into irreducible GL-representations of its homogeneous coordinate ring. In the special case of a Segre variety, our results confirm a conjecture of Landsberg and Weyman.
description: we generalize the results from the previous version to the Segre-Veronese case
Photoperiodic competency for dormancy induction in Populus balsamifera
Creators: name: Zhang, Li
Publisher: name: University of British Columbia
Year: 2013

description: Bud dormancy is an important overwintering mechanism for woody perennials and is induced in most species during late summer by short days (SD) and/or low temperature. Adaptively, however, it is important for new growth not to respond to similar photoperiods in early spring. To investigate this matter, two growth chamber experiments were conducted on four genotypes of balsam poplar (Populus balsamifera L.) originating from two latitudes. Rooted cuttings were moved into SD conditions at weekly intervals after flushing at either 15°C or 20°C. Plant heights were measured every other day. Plants were harvested weekly and total RNA was extracted for quantitative reverse transcription polymerase chain reaction (qRT-PCR) on genes known to be involved in dormancy induction, and for transcriptome sequencing followed by qRT-PCR validation to identify additional genes marking photoperiodic competency. Height growth cessation (HGC) data showed that before a certain age, no matter how soon plants were transferred to SD conditions, they continued to grow until they became competent to respond to photoperiod. The different genotypes became competent at different times (18-40 days since flush), indicating possible genetic variation in this trait. Once competency was attained, it took plants 7-20 days under 20°C to cease height growth under SD, depending on genotype, experiment and time since competency acquisition. Leaf number data revealed that competency acquisition and the transition from preformed leaf emergence to neoformed leaf production, are two independent processes. Temperature did not appear to influence the development of competency, though it increased the speed of height growth cessation. RT-qPCR results revealed three promising gene markers for competency: Potri.017G051100 (G6), Potri.001G222000 (G7) and CONSTANS 2. Increased expression for G6 and G7 was observed post-competency relative to pre-competency, and changes in expression varied between leaves and stem tissue. In contrast, CONSTANS 2 mRNA peaked 32 days after bud flush, coinciding with competency acquisition. This research offers new insight into the molecular mechanisms that underlie the acquisition of photoperiodic competency, which, in a warming climate, may cause phenological mismatch in deciduous boreal tree species, causing premature HGC and loss of productivity.
Cysticercus Tenuicollis: Occurrence at Hashim Nur’s Meat Export Abattoir, Debre - Zeit, Ethiopia
Creators: name: Tadesse Guadu, Aberaw Akalu, Tewodros Fe 1 1 2 Ntahun And 3Mersha Chanie
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2012

description: No abstract available for this resource
Resonance Measurement of Nonlocal Spin Torque in a Three-Terminal Magnetic Device
Creators: name: Xue, Lin
name: Wang, Chen
name: Cui, Yong-Tao
name: Liu, Luqiao
name: Swander, A.
name: Sun, J. Z.
name: Buhrman, R. A.
name: Ralph, D. C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A pure spin current generated within a nonlocal spin valve can exert a spin transfer torque on a nanomagnet. This nonlocal torque enables new design schemes for magnetic memory devices that do not require the application of large voltages across tunnel barriers that can suffer electrical breakdown. Here we report a quantitative measurement of this nonlocal spin torque using spin-torque-driven ferromagnetic resonance. Our measurement agrees well with the prediction of an effective circuit model for spin transport. Based on this model, we suggest strategies for optimizing the strength of nonlocal torque.
description: 21 pages, 3 figures. Supplement included
Post Dural Puncture Headache (PDPH) and Associated Factors after Spinal Anesthesia among Patients in University of Gondar Referral and Teaching Hospital, Gondar, North West Ethiopia
Creators: name: Adugna Aregawi Kassa, Teresa Kisi Beyen
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: No abstract available for this resource
Formation of Black Holes in Topologically Massive Gravity
Creators: name: Sachs, Ivo
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: We present an exact solution in 3-dimensional topologically massive gravity with negative cosmological constant which dynamically interpolates between a past horizon and a chiral AdS pp-wave. Similarly, upon time reversal, one obtains an AdS pp-wave with a future event horizon
description: Improved presentation. Extended discussion of linear stability and regularity of the metric. Added references
Severity and Risk Factors of Post-Operative Pain in University of Gondar Hospital, Northeast Ethiopa
Creators: name: Background: Pain Is A Sensory And Emotional Experience Associated With Actual Or Potential Tissue Damage, Or Described In Terms Of Such Damage According To Association Of The Study Of Pain. Despite Advances In Medical Science Inadequate Post-Operative Pain Management Exists In Ethiopia And Worldwide. Several Perioperative And Pre-Clinical Factors Are Recognized In Contributing To Enhancement Of Pain Severity And Its Adverse Effect. Objective: This Study Is Aimed At Assessing The Severity And Identifying The Risk Factors Contributing To Postoperative Pain. Methodology: A Hospital Based Cross Sectional Study Was Conducted On All Patients Who Came To Gondar University Hospital, Ethiopia Operating Theatre From March-Of April 15, 2013. Data Was Collected By Administering Questionnaires Via Interview And Reviewing The Patients Chart After Taking Consent. Numeric Rating Scale Was Used To Assess Pain Severity. Logistic Regression Was Used To Identify Independent Risk Factors For Post-Operative Pain. Result: 150 Patients Are Included In The Prospective Study. Moderate To Severe Pain Was Reported In 85(57%) Of Patients In The Immediate Post-Operative Period And 117(78%) In The 1st 12 Hour. On Multivariate Analysis ASA I And II OR (4.0) P (0.013), Age Less Than 60 OR (2.642) P (0.042), Female Gender With An OR (2.580) P (0.005), General Anesthesia OR (5.562) P (0.000), And Incision Length >10cm OR (1.991) P (0.041) Were Identified As Independent Risk Factors For Post-Operative Pain Severity. Conclusion: The Study Confirms That Post-Operative Pain Is Still Severe And Under Managed. Identifying Perioperative Factors For The Occurrence Of Moderate/Severe Post-Operative Pain May Be Useful For Designing Factor Specific Interventions To Relieve Patient Suffering
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: No abstract available for this resource
Selected mineral materials grinding rate and its effect on product composition
Creators: name: OLEJNIK, Tomasz P.
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2013
Subjects: ball mill, specific grinding rate, contact points, size distribution

description: Physicochemical Problems of Mineral Processing; 49; 407-418; ISSN 2084-4735
Renormalization-group analysis of a spin-1 Kondo dot: Non-equilibrium transport and relaxation dynamics
Creators: name: Hörig, Christoph B. M.
name: Schuricht, Dirk
name: Andergassen, Sabine
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study non-equilibrium transport through a spin-1 Kondo dot in a local magnetic field. To this end we perform a two-loop renormalization group analysis in the weak-coupling regime yielding analytic results for (i) the renormalized magnetic field and the g-factor, (ii) the time evolution of observables and the relevant decay rates, (iii) the magnetization and anisotropy as well as (iv) the current and differential conductance in the stationary state. In particular, we find that compared to a spin-1/2 Kondo dot there exist three additional decay rates resulting in an enhanced broadening of the logarithmic features observed in stationary quantities. Additionally, we study the effect of anisotropic couplings between reservoir and impurity spin.
description: 11 pages, 6 figures
Processing of iron ore fines from Alswaween, Kingdom of Saudi Arabia
Creators: name: AHMED, Hussin A. M.
name: MAHRAN, Gamal M. A.
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2013
Subjects: iron ore fines, flocculation, column flotation, selectivity, dissemination, starch

description: Physicochemical Problems of Mineral Processing; 49; 419-430; ISSN 2084-4735
Numerical model for macroscopic quantum superpositions based on phase-covariant quantum cloning
Creators: name: Buraczewski, Adam
name: Stobińska, Magdalena
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Macroscopically populated quantum superpositions pose a question to what extent macroscopic world obeys quantum mechanical laws. Recently such superpositions for light, generated by optimal quantum cloner, were demonstrated. They are of fundamental and technological interest. We present numerical methods useful for modeling of these states. Their properties are governed by Gaussian hypergeometric function, which cannot be reduced to neither elementary nor easily tractable functions. We discuss the method of efficient computation of this function for half integer parameters and moderate value of its argument. We show how to dynamically estimate a cutoff for infinite sums involving this function performed over its parameters. Our algorithm exceeds double precision and is parallelizable. Depending on the experimental parameters it chooses one of the several ways of summation to achieve the best efficiency. Methods presented here can be adjusted for analysis of similar experimental schemes.
description: 19 pages, 4 figures. Accepted for publication in Comp. Phys. Commun