cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exhibiting animals in Spain, Britain, and the Americas, 1850-1910
Creators: Boone, M. Elizabeth
Publisher: name: University of Alberta Library
Year: 2020

SSHRC IG awarded 2021. Non-human animals, both wild and domesticated, were exhibited widely during the nineteenth century. They appeared live on racetracks, at circuses, in rodeos, and at agricultural fairs; mounted through the art of taxidermy in natural history museums; as the subject of sculptural monuments decorating fairgrounds, parks, and zoos; and on canvases in exhibitions of fine art. The relationship between the humans responsible for such displays, the animals in them, and the enthusiastic audiences who viewed these popular events ranged from partnership to exploitation, with some exhibitionary models respecting animal agency to a greater degree than others. This interdisciplinary project challenges the assumptions, goals, and values of three distinct bodies of scholarship, the history of art and visual culture, theories of exhibition and display, and animal studies, and its two complementary publications will explore the exhibition of animals in the transnational Atlantic World. The first is a multi-authored anthology of essays on exhibitions in Europe and the Americas that will present new case studies exploring a broad variety of animal displays. The second is a sole-authored book that will focus on exhibitions of the horse--an animal whose relationship to human beings changed dramatically as a result of the Industrial Revolution--in two European countries deeply invested in the colonial enterprise (Spain and Great Britain) and two previously colonized American nations (the United States and Argentina) that link their histories to Europe in complexly layered ways. This art historical research project will benefit all who hope to better understand how the viewing of animals in the nineteenth century has led to our failure to work ethically with animals today, helping to restore a more balanced equilibrium to human-animal relations in the future.
Familie im Wandel: Regenbogenfamilien - Schwule und Lesben mit Kinderwunsch und der Auftrag der Sozialen Arbeit
Creators: name: Hunziker, Simone
Publisher: name: Zenodo
Year: 2019

description: Die Autorin, Simone Hunziker, widmet sich in dieser Literaturarbeit dem Thema Regenbogenfamilien und dem Kinderwunsch von Schwulen und Lesben in der Schweiz. Die Thematik befindet sich aktuell in einem gesellschaftlichen Wandel und Spannungsfeld zwischen unterschiedlichen Werten. Die Autorin geht davon aus, dass sich in Zukunft mehr Regenbogenfamilien bilden werden. Die Soziale Arbeit kann in verschiedenen Arbeitsfeldern mit Regenbogenfamilien oder ihren Mitgliedern in Berührung kommen. Das Thema der sexuellen Orientierung, welches in engen Zusammenhang steht mit Regebogenfamilien, Schwulen und Lesben mit Kinderwunsch, kann Menschen in jedem Alter beschäftigen. Ziel dieser Arbeit ist es, die Vielfalt von Regenbogenfamilien und das Spannungsfeld, in dem sie leben sichtbar zu machen. Die Autorin ist der Meinung, dass ein erfüllter Kinderwunsch und die rechtliche Gleichbehandlung für viele Menschen zur Vorstellung eines guten Lebens dazugehört. Deshalb wird in dieser Arbeit der gerechtigkeitsorientierte Ansatz von Martha Nussbaum beigezogen. Anhand aktueller Forschung und Literatur wird der familiäre Wandel, der Wertewandel und die rechtliche Situation in Bezug zu gleichgeschlechtlichen Paaren und Elternschaft beschrieben. Es wird zudem auf die Entstehung einer Regenbogenfamilie und die Entwicklung der Kinder kurz eingegangen. Das Konzept der Heteronormativität erklärt die Diskriminierungen auf gesellschaftlicher und rechtlicher Ebene. Anschliessend wird das Thema aus Sicht der Sozialen Arbeit bewertet und Handlungsmöglichkeiten skizziert. Dabei wird mit der Regenbogenkompetenz die Weiterbildung von Fachpersonen der Sozialen Arbeit angesprochen. Weiter wird der Kontext Schule und die behördliche Tätigkeit, als Handlungsfeld der Sozialen Arbeit im Kontakt mit Regenbogenfamilien als Beispiel beschrieben. Abgerundet wird diese Arbeit mit einem persönlichen Fazit und Ausblick.
description: + Code Diss LU: hslusa basa 2019 + Fussnote: Bachelorarbeit, Hochschule Luzern - Soziale Arbeit, Ausbildungsgang Sozialarbeit, 2019
Extreme Active Molecular Jets in L1448C
Creators: name: Hirano, Naomi
name: Ho, Paul P. T.
name: Liu, Sheng-Yuan
name: Shang, Hsien
name: Lee, Chin-Fei
name: Bourke, Tyler L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The protostellar jet driven by L1448C was observed in the SiO J=8-7 and CO J=3-2 lines and 350 GHz dust continuum at ~1" resolution with the Submillimeter Array (SMA). A narrow jet from the northern source L1448C(N) was observed in the SiO and the high-velocity CO. The jet consists of a chain of emission knots with an inter-knot spacing of ~2" (500 AU) and a semi-periodic velocity variation. The innermost pair of knots, which are significant in the SiO map but barely seen in the CO, are located at ~1" (250 AU) from the central source, L1448C(N). Since the dynamical time scale for the innermost pair is only ~10 yr, SiO may have been formed in the protostellar wind through the gas-phase reaction, or been formed on the dust grain and directly released into the gas phase by means of shocks. It is found that the jet is extremely active with a mechanical luminosity of ~7 L_sun, which is comparable to the bolometric luminosity of the central source (7.5 L_sun). The mass accretion rate onto the protostar derived from the mass-loss rate is ~10^{-5} M_sun/yr. Such a high mass accretion rate suggests that the mass and the age of the central star are 0.03-0.09 M_sun and (4-12)x10^3 yr, respectively, implying that the central star is in the very early stage of protostellar evolution. The low-velocity CO emission delineates two V-shaped shells with a common apex at L1448C(N). The kinematics of these shells are reproduced by the model of a wide opening angle wind. The co-existence of the highly-collimated jets and the wide-opening angle shells can be explained by the unified X-wind model" in which highly-collimated jet components correspond to the on-axis density enhancement of the wide-opening angle wind. The CO $J$=3--2 map also revealed the second outflow driven by the southern source L1448C(S) located at ~8.3" (2000 AU) from L1448C(N).
description: 45 pages, 13 figures, Accepted for the publication in the Astrophysical Journal
Comparative Surveys of Fertility in Latin America: Quito and Guayaquil, Ecuador
Creators: name: KAPS CELADE
name: PECFAL-RURAL
Publisher: name: Roper Center for Public Opinion Research
Year: 2022

description: Changes in population size of Ecuador; desired number of children; marrying; interval between consecutive births; age to stop child bearing; age when moved to capital city; daily hours worked; living expenses; desired education for eldest daughter; career goals for eldest son; religiosity; infant mortality; index of traditionalism: appropriate roles of women, confidence in concept of progress, appropriate parent-child relationship, advisability of integration of sexes in schools; newspaper and magazine reading; major decision-maker of domestic issues and children's education; husband's help with housework; spare time; husband's use of weekend; discussion of family size; family planning; appropriate advisor of birth control; acceptable circumstances for using birth control; knowledge/source of knowledge about/use of various listed methods of birth control; interest in the pill, frequency of use of birth control; pregnant/sterile; demographics.
A unique C-linked chalcone-dihydrochalcone dimer from Dracaena cinnabari resin
Creators: name: Helal, Iman E.
name: Elsbaey, Marwa
name: Zaghloul, Ahmed M.
name: Mansour, El-Sayed S.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: A new C-linked chalcone-dihydrochalcone dimer, named dracidione, was isolated from the ethyl acetate extract of dragon’s blood resin of Dracaena cinnabari Balf. f. Structure elucidation of the new compound was carried out by means of one- and two-dimensional NMR spectroscopy in addition to high resolution mass spectrometry. The unique structure incorporated a chalcone and a dihydrochalcone, which is reported for the first time from nature. Furthermore, dracidione showed moderate α-glucosidase inhibitory activity with IC50= 40.27 µg/ml.
Influence of imperfections on tunneling rate in $δ$-layer junctions
Creators: name: Mendez, Juan P.
name: Misra, Shashank
name: Mamaluy, Denis
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The atomically precise placement of dopants in semiconductors using scanning tunneling microscopes has been used to create planar dopant-based devices, enabling the exploration of novel classical or quantum computing concepts, which often require precise control over tunneling rates in their operation. While the geometry of the dopants can be defined to sub-nanometer precision, imperfections can still play a significant role in determining the tunneling rates. Here, we investigate the influence of different imperfections in phosphorous $δ$-layer tunnel junctions in silicon: variations of $δ$-layer thickness and tunnel gap width, interface roughness, and charged impurities. It is found that while most of the imperfections moderately affect the tunneling rate, a single charged impurity in the tunnel gap can alter the tunneling rate by more than an order of magnitude, even for relatively large tunnel gaps. Moreover, it is also revealed that the tunneling rate strongly depends on the electrical charge sign of the impurity.
From pre- to young Planetary Nebulae: radio continuum variability
Creators: name: Cerrigone, L.
name: Trigilio, C.
name: Umana, G.
name: Buemi, C. S.
name: Leto, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Searching for variability, we have observed a sample of hot post-AGB stars and young Planetary Nebulae candidates with the Very Large Array at 4.8, 8.4, and 22.4 GHz. The sources had been previously detected in the radio continuum, which is a proof that the central stars have started ionising their circumstellar envelopes and an increase in radio flux with time can be expected as a result of the progression of the ionisation front. Such a behaviour has been found in IRAS 18062+2410, whose radio modelling has allowed us to determine that its ionised mass has increased from 10^{-4} to 3.3 10^{-4} M_sun in 8 years and its envelope has become optically thin at lower frequencies. Different temporal behaviours have been found for three other sources. IRAS 17423-1755 has shown a possibly periodic pattern and an inversion of its radio spectral index, as expected from a varying stellar wind. We estimate that the radio flux arises from a very compact region around the central star (10^{15} cm) with an electron density of 2 10^6 cm^{-3}. IRAS 22568+6141 and 17516-2525 have decreased their radio flux densities of about 10% per year over 4 years. While a linear increase of the flux density with time points out to the progression of the ionisation front in the envelope, decreases as well as quasi-periodic patterns may indicate the presence of unstable stellar winds/jets or thick dusty envelopes absorbing ionising photons.
description: 9 pages, 5 figures, accepted for publication on MNRAS
Autochthone Hepatitis-E-Virus-Infektion als Ursache der akuten Hepatitis in Deutschland – eine Kasuistik.
Creators: name: Veitt, R.
name: Reichardt, M.
name: Wenzel, J. J.
name: Jilg, W.
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: 610 Medizin

description: There is an increasing body of evidence that hepatitis E virus (HEV) triggers acute hepatitis not only in tropical and subtropical regions of Asia, Africa, and America with low sanitary standards but also in highly industrialized countries. We here report on two patients from Thuringia (Germany) with a HEV infection without a recent stay abroad. All other common causes of hepatitis were excluded. Transaminases were significantly increased in both cases, while icterus could be proven in one patient, only. Both patients fully recovered in the long-term course. Epidemiological and phylogenetic data from viral analyses suggest that HEV infection has to be considered as a zoonosis. It is likely that viral transmission from animals to humans occurs through insufficiently cooked meat or entrails, e. g., from pigs or wild animals. In summary, HEV infection is a relevant differential diagnosis in acute non-A/B/C viral hepatitis. Further studies are required for the identification of other transmission pathways, pathogen reservoirs as well as novel concepts for prophylaxis, especially for patients at risk for hepatic diseases.
Phytochemical and spectral analysis of the methanolic extracts of leaves of Murraya koenigii of Jazan, Saudi Arabia
Creators: name: Moni, Sivakumar Sivagurunthan
name: Sultan, Muhammad Hadi
name: Makeen, Hafiz A.
name: Jabeen, Aamena
name: Sanobar, Syeda
name: Siddiqui, Rahimullah
name: Rehman, Zia ur
name: Alam, Md Shamsher
name: Ahmad, Sarfaraz
name: Elmobark, Mohamed Eltaib
name: Moochikkal, Remesh
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
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: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry

description: The present study aimed to explore the biocomponents of Murraya koenigii leaves through hot continuous percolation method using methanol as solvent. The spectral analysis by GC-MS and FTIR study demonstrated the presence of alkaloids, tannins, fatty acids, and steroids. The extract was characterized by the presence of unique compounds such as epiyangambin, stigmasterol, α-terpineol, eucalyptol, ethyl cinnamate, fatty acids, and other steroids.
Spontaneous symmetry breaking in Schrödinger lattices with two nonlinear sites
Creators: name: Brazhnyi, Valeriy A.
name: Malomed, Boris A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We introduce discrete systems in the form of straight (infinite) and ring-shaped chains, with two symmetrically placed nonlinear sites. The systems can be implemented in nonlinear optics (as waveguiding arrays) and BEC (by means of an optical lattice). A full set of exact analytical solutions for symmetric, asymmetric, and antisymmetric localized modes is found, and their stability is investigated in a numerical form. The symmetry-breaking bifurcation (SBB), through which the asymmetric modes emerge from the symmetric ones, is found to be of the subcritical type. It is transformed into a supercritical bifurcation if the nonlinearity is localized in relatively broad domains around two central sites, and also in the ring of a small size, i.e., in effectively nonlocal settings. The family of antisymmetric modes does not undergo bifurcations, and features both stable and unstable portions. The evolution of unstable localized modes is investigated by means of direct simulations. In particular, unstable asymmetric states, which exist in the case of the subcritical bifurcation, give rise to breathers oscillating between the nonlinear sites, thus restoring an effective dynamical symmetry between them.
description: To appear in PRA
New ent-kauran diterpene and antioxidant components from the seed of Ipomoea nil
Creators: name: Lee, Chia-Lin
name: Lo, Pei-Ting
name: Jhan, Yun-Lian
name: Chen, Chao-Jung
name: Chang, Yuan-Shiun
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
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: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: One new ent-kauran diterpene, 7β,16β,17-trihydroxy ent-kauran 19-(6β)-olide (1), along with eight known compounds were isolated from the seed of Ipomoea nil. Isolates caffeoylquinic acid derivatives 5–9 were found for the first time in this species. All structures were identified from various spectroscopic data. trans-Caffeic acid 3, phenylpropanoid 4, and caffeoylquinic acid derivatives 5–9 could inhibit ROS generations induced in human keratinocyte HaCaT cells with IC50 values of 0.94–28.40 μM. Compounds 3 and 5–9 also had DPPH free radical scavenging properties (IC50 values, 14.86–68.27 μM), however, isolate 4 did not show inhibition effect. Generally, I. nil and its secondary metabolites 3–9 could be further applied for oxidative stress damage resulted in skin disorders.
Study of Molecular Clouds associated with HII Regions
Creators: name: Azimlu, Mohaddesseh
name: Fich, Michel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The properties of molecular clouds associated with 10 HII regions were studied using CO observations. We identified 142 dense clumps within our sample and found that our sources are divided into two categories: those with clumps that show a power law size-line width relation (Type I) and those which do not show any relation (Type II). The clumps in the Type I sources have larger power law indices than found in previous studies. The clumps in the Type II sources have larger line widths and show evidence (such as outflows) of current active star formation within the clump. We suggest that the lack of a size-line width relation is a sign of current active star formation. Massive clumps seem to have similar masses calculated by different methods but lower mass clumps have larger virial masses compared to velocity integrated and LTE mass. We found no relation between mass distribution of the clumps and distance from the H~II region ionization front, but a weak decrease of the excitation temperature with increasing distance from the ionized gas. The clumps in collected shells around the H~II regions have slightly larger line widths but no relation was found between line width and distance from the H~II region, which probably indicates that the internal dynamics of the clumps are not affected by the ionized gas. Internal sources of turbulence, such as outflows and stellar winds from young proto-stars may have a more important role on the molecular gas dynamics. We suggest that large line width and larger size-line width power law indices are therefore the initial characteristics of clumps in massive star forming clouds and that some may evolve into objects similar to our Type II sources, where local "second generation" stars are forming and eliminating the size-line-width relation.
description: 38 pages, 26 Figures, 5 Tables, Accepted for publication in AJ
Transport through a strongly coupled graphene quantum dot in perpendicular magnetic field
Creators: name: Guettinger, J.
name: Stampfer, C.
name: Frey, T.
name: Ihn, T.
name: Ensslin, K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present transport measurements on a strongly coupled graphene quantum dot in a perpendicular magnetic field. The device consists of an etched single-layer graphene flake with two narrow constrictions separating a 140 nm diameter island from source and drain graphene contacts. Lateral graphene gates are used to electrostatically tune the device. Measurements of Coulomb resonances, including constriction resonances and Coulomb diamonds prove the functionality of the graphene quantum dot with a charging energy of around 4.5 meV. We show the evolution of Coulomb resonances as a function of perpendicular magnetic field, which provides indications of the formation of the graphene specific 0th Landau level. Finally, we demonstrate that the complex pattern superimposing the quantum dot energy spectra is due to the formation of additional localized states with increasing magnetic field.
description: 6 pages, 4 figures
Nonrelativistic collisionless shocks in weakly magnetized electron--ion plasmas: two-dimensional particle-in-cell simulation of perpendicular shock
Creators: name: Kato, Tsunehiko N.
name: Takabe, Hideaki
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: A two-dimensional particle-in-cell simulation is performed to investigate weakly magnetized perpendicular shocks with a magnetization parameter of 6 x 10^-5, which is equivalent to a high Alfvén Mach number M_A of ~130. It is shown that current filaments form in the foot region of the shock due to the ion-beam--Weibel instability (or the ion filamentation instability) and that they generate a strong magnetic field there. In the downstream region, these current filaments also generate a tangled magnetic field that is typically 15 times stronger than the upstream magnetic field. The thermal energies of electrons and ions in the downstream region are not in equipartition and their temperature ratio is T_e / T_i ~ 0.3 - 0.4. Efficient electron acceleration was not observed in our simulation, although a fraction of the ions are accelerated slightly on reflection at the shock. The simulation results agree very well with the Rankine-Hugoniot relations. It is also shown that electrons and ions are heated in the foot region by the Buneman instability (for electrons) and the ion-acoustic instability (for both electrons and ions). However, the growth rate of the Buneman instability is significantly reduced due to the relatively high temperature of the reflected ions. For the same reason, ion-ion streaming instability does not grow in the foot region.
description: 24 pages, 23 figures, accepted for publication in ApJ
The Bolocam Galactic Plane Survey: Survey Description and Data Reduction
Creators: name: Aguirre, James E.
name: Ginsburg, Adam G.
name: Dunham, Miranda K.
name: Drosback, Meredith M.
name: Bally, John
name: Battersby, Cara
name: Bradley, Eric Todd
name: Cyganowski, Claudia
name: Dowell, Darren
name: Evans, Neal J.
name: Glenn, Jason
name: Harvey, Paul
name: Rosolowsky, Erik
name: Stringfellow, Guy S.
name: Walawender, Josh
name: Williams, Jonathan P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the Bolocam Galactic Plane Survey (BGPS), a 1.1 mm continuum survey at 33" effective resolution of 170 square degrees of the Galactic Plane visible from the northern hemisphere. The survey is contiguous over the range -10.5 < l < 90.5, |b| < 0.5 and encompasses 133 square degrees, including some extended regions |b| < 1.5. In addition to the contiguous region, four targeted regions in the outer Galaxy were observed: IC1396, a region towards the Perseus Arm, W3/4/5, and Gem OB1. The BGPS has detected approximately 8400 clumps over the entire area to a limiting non-uniform 1-sigma noise level in the range 11 to 53 mJy/beam in the inner Galaxy. The BGPS source catalog is presented in a companion paper (Rosolowsky et al. 2010). This paper details the survey observations and data reduction methods for the images. We discuss in detail the determination of astrometric and flux density calibration uncertainties and compare our results to the literature. Data processing algorithms that separate astronomical signals from time-variable atmospheric fluctuations in the data time-stream are presented. These algorithms reproduce the structure of the astronomical sky over a limited range of angular scales and produce artifacts in the vicinity of bright sources. Based on simulations, we find that extended emission on scales larger than about 5.9' is nearly completely attenuated (> 90%) and the linear scale at which the attenuation reaches 50% is 3.8'. Comparison with other millimeter-wave data sets implies a possible systematic offset in flux calibration, for which no cause has been discovered. This presentation serves as a companion and guide to the public data release through NASA's Infrared Processing and Analysis Center (IPAC) Infrared Science Archive (IRSA). New data releases will be provided through IPAC IRSA with any future improvements in the reduction.
description: Accepted for publication in Astrophysical Journal Supplement
Constraining the MOdified Newtonian Dynamics from spherically symmetrical hydrodynamic accretion
Creators: name: Roy, Nirupam
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The MOdified Newtonian Dynamics (MOND) is an alternative to the dark matter assumption that can explain the observed flat rotation curve of galaxies. Here hydrodynamic accretion is considered to critically check the consistency and to constrain the physical interpretation of this theory. It is found that, in case of spherically symmetrical hydrodynamic accretion, the modified Euler's equation has real solution if the interpretation is assumed to be a modification of the law of dynamics. There is no real solution if it is assumed to be an acceleration scale dependent modification of the gravitational law. With the modified Euler's equation, the steady state mass accretion rate is found to change up to ~ 15%. The astrophysical and cosmological implications of these results are also discussed.
description: 4 pages, 3 figures. Accepted for publication in MNRAS. The definitive version will be available at http://www.blackwell-synergy.com/
Existence of global strong solutions in critical spaces for barotropic viscous fluids
Creators: name: Haspot, Boris
Publisher: name: arXiv
Year: 2010
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This paper is dedicated to the study of viscous compressible barotropic fluids in dimension $N\geq2$. We address the question of the global existence of strong solutions for initial data close from a constant state having critical Besov regularity. In a first time, this article show the recent results of \cite{CD} and \cite{CMZ} with a new proof. Our result relies on a new a priori estimate for the velocity, where we introduce a new structure to \textit{kill} the coupling between the density and the velocity as in \cite{H2}. We study so a new variable that we call effective velocity. In a second time we improve the results of \cite{CD} and \cite{CMZ} by adding some regularity on the initial data in particular $ρ_{0}$ is in $H^{1}$. In this case we obtain global strong solutions for a class of large initial data on the density and the velocity which in particular improve the results of D. Hoff in \cite{5H4}. We conclude by generalizing these results for general viscosity coefficients.
Cool DZ white dwarfs in the SDSS
Creators: name: Koester, D.
name: Girven, J.
name: Gänsicke, B. T.
name: Dufour, P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the identification of 26 cool DZ white dwarfs that lie across and below the main sequence in the Sloan Digital Sky Survey (SDSS) u-g vs. g-r two-color diagram; 21 of these stars are new discoveries. The sample was identified by visual inspection of all spectra of objects that fall below the main sequence in the two-color diagram, as well as by an automated search for characteristic spectral features over a large area in color space that included the main sequence. The spectra and photometry provided by the SDSS project are interpreted with model atmospheres, including all relevant metals. Effective temperatures and element abundances are determined, while the surface gravity has to be assumed and was fixed at the canonical value of log g = 8. These stars represent the extension of the well-known DZ sequence towards cooler temperatures and fill the gap around Teff = 6500 K present in a previous study. The metal abundances are similar to those in the hotter DZ, but the lowest abundances are missing, probably because of our selection procedures. The interpretation is complicated in terms of the accretion/diffusion scenario, because we do not know if accretion is still occurring or has ended long ago. Independent of that uncertainty, the masses of the metals currently present in the convection zones - and thus an absolute lower limit of the total accreted masses - of these stars are similar to the largest asteroids in our solar system.
description: Accepted by Astronomy and Astrophysics
The Dual Perspective: Unpacking Police-Citizen Arrest Encounters
Creators: Campeau, Holly
Publisher: name: University of Alberta Library
Year: 2019

The community is an essential partner in law enforcement, and municipal "citizen satisfaction surveys" provide police with a snapshot of how the public perceives their performance. However, only a small proportion of respondents represented in these samples have experienced direct contact with police, and very few had an encounter that resulted in arrest. The implications of this are: (1) we end up with a general measure about "reputation" of police from people who are not exposed to routine police practices; and (2) use-of-force events become archetypes in the media, depicting interactions with law enforcement as inherently negative or violent. The police-citizen encounter is thus an under-studied interaction. As police serve as gatekeepers to the criminal justice system, it is critical that we understand how both parties engaged in police-citizen encounters make sense of these interactions, in all their forms. This proposal presents a two-phased expanded project with three police services: Edmonton Police Service, Greater Sudbury Police Service and Ottawa Police Service. Combining data with an ongoing case study with Calgary Police Service, this yields an overall four-city comparison across two provinces. In Phase 1, we study how people make sense of arrest encounters soon after their own has taken place. We will apply a semi-structured questionnaire to interview arrestees in police custody units in Edmonton (n=90), Sudbury (n=40), and Ottawa (n=70). In Phase 2, we will interview frontline police officers (n=30; n=15; n=25) in order to reflect on their own experiences of arresting citizens. Pairing these narratives with those of arrestees will provide a multifaceted account of police-citizen encounters. The resulting dataset would be the only one of its kind in Canada: there is no research examining the "dual perspective" of police-citizen encounters and rarely do we hear directly from those who have direct contact with police or those who are freshly arrested.
Polyphenolic profiling of two Embelia spp. endemic to South Western Ghats of India by liquid chromatography coupled with tandem mass spectrometry analysis
Creators: name: Vijayan, K. P. Rini
name: Raghu, A. V.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Pharmacology
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: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: This study for the first time illustrates a comprehensive picture of the phenolic composition of Embelia adnata and Embelia gardneriana by high-performance liquid chromatography coupled with mass spectrometry analysis with ESI in negative ionisation. The analysis was performed in the methanolic extracts of different parts of these two species separately and identifies 54 individual phenolic compounds present in them. Among this by individual 36 and 28 compounds were recorded from E. adnata and E. gardneriana, respectively, and in this, 10 compounds were common in both the two species. The detected compounds come under the classes flavonoids, flavonoid glycosides, isoflavonoids, benzenoids, coumarins, stilbens, chalcones, polyphenols, gallic acid derivatives, tannins and different derivatives of various organic acids.
A Closely-Packed System of Low-Mass, Low-Density Planets Transiting Kepler-11
Creators: name: Lissauer, Jack J.
name: Fabrycky, Daniel C.
name: Ford, Eric B.
name: Borucki, William J.
name: Fressin, Francois
name: Marcy, Geoffrey W.
name: Orosz, Jerome A.
name: Rowe, Jason F.
name: Torres, Guillermo
name: Welsh, William F.
name: Batalha, Natalie M.
name: Bryson, Stephen T.
name: Buchhave, Lars A.
name: Caldwell, Douglas A.
name: Carter, Joshua A.
name: Charbonneau, David
name: Christiansen, Jessie L.
name: Cochran, William D.
name: Desert, Jean-Michel
name: Dunham, Edward W.
name: Fanelli, Michael N.
name: Fortney, Jonathan J.
name: Gautier, Thomas N.
name: Geary, John C.
name: Gilliland, Ronald L.
name: Haas, Michael R.
name: Hall, Jennifer R.
name: Holman, Matthew J.
name: Koch, David G.
name: Latham, David W.
name: Lopez, Eric
name: McCauliff, Sean
name: Miller, Neil
name: Morehead, Robert C.
name: Quintana, Elisa V.
name: Ragozzine, Darin
name: Sasselov, Dimitar
name: Short, Donald R.
name: Steffen, Jason H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: When an extrasolar planet passes in front of its star (transits), its radius can be measured from the decrease in starlight and its orbital period from the time between transits. Multiple planets transiting the same star reveal more: period ratios determine stability and dynamics, mutual gravitational interactions reflect planet masses and orbital shapes, and the fraction of transiting planets observed as multiples has implications for the planarity of planetary systems. But few stars have more than one known transiting planet, and none has more than three. Here we report Kepler spacecraft observations of a single Sun-like star that reveal six transiting planets, five with orbital periods between 10 and 47 days plus a sixth one with a longer period. The five inner planets are among the smallest whose masses and sizes have both been measured, and these measurements imply substantial envelopes of light gases. The degree of coplanarity and proximity of the planetary orbits imply energy dissipation near the end of planet formation.
description: published in Nature
The Production of Probabilistic Entropy in Structure/Action Contingency Relations
Creators: name: Leydesdorff, Loet
Publisher: name: arXiv
Year: 2010
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Luhmann (1984) defined society as a communication system which is structurally coupled to, but not an aggregate of, human action systems. The communication system is then considered as self-organizing ("autopoietic"), as are human actors. Communication systems can be studied by using Shannon's (1948) mathematical theory of communication. The update of a network by action at one of the local nodes is then a well-known problem in artificial intelligence (Pearl 1988). By combining these various theories, a general algorithm for probabilistic structure/action contingency can be derived. The consequences of this contingency for each system, its consequences for their further histories, and the stabilization on each side by counterbalancing mechanisms are discussed, in both mathematical and theoretical terms. An empirical example is elaborated.
Enumeration of spanning trees in a pseudofractal scale-free web
Creators: name: Zhang, Zhongzhi
name: Liu, Hongxiao
name: Wu, Bin
name: Zhou, Shuigeng
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Spanning trees are an important quantity characterizing the reliability of a network, however, explicitly determining the number of spanning trees in networks is a theoretical challenge. In this paper, we study the number of spanning trees in a small-world scale-free network and obtain the exact expressions. We find that the entropy of spanning trees in the studied network is less than 1, which is in sharp contrast to previous result for the regular lattice with the same average degree, the entropy of which is higher than 1. Thus, the number of spanning trees in the scale-free network is much less than that of the corresponding regular lattice. We present that this difference lies in disparate structure of the two networks. Since scale-free networks are more robust than regular networks under random attack, our result can lead to the counterintuitive conclusion that a network with more spanning trees may be relatively unreliable.
description: Definitive version accepted for publication in EPL (Europhysics Letters)
Conformal Mapping and Bound States in Bent Waveguides
Creators: name: Sadurni, Emerson
name: Schleich, Wolfgang P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Is it possible to trap a quantum particle in an open geometry? In this work we deal with the boundary value problem of the stationary Schroedinger (or Helmholtz) equation within a waveguide with straight segments and a rectangular bending. The problem can be reduced to a one dimensional matrix Schroedinger equation using two descriptions: oblique modes and conformal coordinates. We use a corner-corrected WKB formalism to find the energies of the one dimensional problem. It is shown that the presence of bound states is an effect due to the boundary alone, with no classical counterpart for this geometry. The conformal description proves to be simpler, as the coupling of transversal modes is not essential in this case.
description: 16 pages, 10 figures. To appear in the Proceedings of the Symposium "Symmetries in Nature, in memoriam Marcos Moshinsky"
The Swift-BAT hard X-ray sky monitoring unveils the orbital period of the HMXB IGR J16493-4348
Creators: name: Cusumano, G.
name: La Parola, V.
name: Romano, P.
name: Segreto, A.
name: Vercellone, S.
name: Chincarini, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: IGR J16493-4348 is a supergiant high mass X-ray binary discovered by INTEGRAL in 2004. The source is detected at a significance level of $\sim21$ standard deviations in the Swift-BAT survey data collected during the first 54 months of the Swift mission. The timing analysis reveals an orbital period of $\sim$6.78 days and the presence of a full eclipse of the compact ob\ ject. The dynamical range (variability up to a factor $\sim$20) observed during the BAT monitoring suggests that IGR J16493-4348 is a wind-fed system. The derived semi-major axis of the binary system is $\sim55 R_{\sun}$ with an orbit eccentr\ icity lower than 0.15.
description: 4 pages, 6 figures. Accepted for publication in MNRAS
Statistical properties of the GALEX spectroscopic stellar sample
Creators: name: Bertone, Emanuele
name: Chavez, Miguel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The GALEX General Data Release 4/5 includes 174 spectroscopic tiles, obtained from slitless grism observations, for a total of more than 60,000 ultraviolet spectra. We have determined statistical properties of the sample of GALEX stars. We have defined a suitable system of spectroscopic indices, which measure the main mid-UV features at the GALEX low spectral resolution and we have employed it to determine the atmospheric parameters of of stars in the range 4500-1 dex.
description: 9 pages, 9 figures, accepted for publication in Astrophysics & Space Science, UV universe special issue
Interspecies singlet pairing in a mixture of two spin-1 Bose condensates
Creators: name: Zhang, Jie
name: Li, Tiantian
name: Zhang, Yunbo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the ground state properties of a mixture formed by two spin-1 condensates in the absence of an external magnetic field. As the collisional symmetry between interspecies bosonic atoms is broken, the interspecies coupling interaction ($β$) and interspecies singlet pairing interaction ($γ$) arise. The ground state can be calculated using the angular momentum theory analytically for $γ=0$. The full quantum approach of exact diagonalization is adopted numerically to consider the more general case as $γ\neq 0$. We illustrate the competition between the two interspecies interactions and find that as singlet pairing interaction dominates (or the total spin vanishes), there are still different types of singlet formations which are well determined by $β$.
description: 7 pages, 4 figures
Charmonium correlation and spectral functions at finite temperature
Creators: name: Ding, H. -T.
name: Francis, A.
name: Kaczmarek, O.
name: Karsch, F.
name: Satz, H.
name: Soeldner, W.
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: We study the properties of charmonium states at finite temperature in quenched QCD on isotropic lattices. We measured charmonium correlators using non-perturbatively $\cO(a)$ improved clover fermions on fine ($a=0.01$ fm) lattices with a relatively large size of $128^{3}\times 96$, $128^3\times48$, $128^3\times32$ and $128^3\times24$ at $0.73~T_c$, $1.46~T_c$, $2.20~T_c$ and $2.93~T_c$, respectively. Our analysis suggests that $\Jpsi$ is melted already at $1.46~T_c$ and $η_c$ starts to dissolve at $1.46~T_c$ and does not exist at higher temperatures. We also identify the heavy quark transport contribution at the spectral function level for the first time.
description: Talk presented at The XXVIII International Symposium on Lattice Field Theory, Lattice2010, June 14-19, 2010, Villasimius, Italy
Ethical Principles for the OSCAR Well-being Mentoring Program
Creators: name: Borges, Carolina Oliveira
name: Gonçalves, Francisco Valente
name: Gaspar, Inês
name: Jesus, Joana
Publisher: name: Zenodo
Year: 2022
Subjects: online mentoring
ethical principles of mentoring
code of conduct
personalised learning
edoer

description: This document describes the ethical principles (code of conduct) of well-being mentoring within the frames of the OSCAR project. The main purpose and goal of the OSCAR well-being mentoring program is to support mental health, and the developing of well-being competencies and skills. Based on the OSCAR well-being framework, the well-being skills are: (1) Finding Meaning in Life, (2) Finding Meaning at Work, (3) Awareness of Well-being, (4) Recognizing and Understanding Emotions, (5) Emotion Regulation, (6) Stress Management, (7) Setting goals, (8) Psychological Resilience, (9) Accountability, (10) Finding a Work-Life Balance, (11) Strengthening Social Relationships, (12) Assertive Communication, (13) Interpersonal and Social Empathy, (14) Dealing with Perfectionism, (15) Promoting Self-Kindness, and (16) Increasing Self-Confidence. More information on the project: http://oscar-ai.eu/ Learning and mentoring platform: http://edoer.eu/ Mental health training programme: https://labs.tib.eu/edoer/en/dashboard/discovery/jobs/99
description: The OSCAR project and this deliverable was supported by the European Commission Erasmus Plus programme. Project id: 2020-1-DE01-KA203-005713
Variational approximations in discrete nonlinear Schrödinger equations with next-nearest-neighbor couplings
Creators: name: Chong, C.
name: Carretero-González, R.
name: Malomed, B. A.
name: Kevrekidis, P. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Solitons of a discrete nonlinear Schrödinger equation which includes the next-nearest-neighbor interactions are studied by means of a variational approximation and numerical computations. A large family of multi-humped solutions, including those with a nontrivial phase structure which are a feature particular to the next-nearest-neighbor interaction model, are accurately predicted by the variational approximation. Bifurcations linking solutions with the trivial and nontrivial phase structures are also captured remarkably well, including a prediction of critical parameter values.
Zircon to monazite phase transition in CeVO4
Creators: name: Panchal, V.
name: Lopez-Moreno, S.
name: Santamaria-Perez, D.
name: Errandonea, D.
name: Manjon, F. J.
name: Rodriguez-Hernandez, P.
name: Munoz, A.
name: Achary, S. N.
name: Tyagi, A. K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: X-ray diffraction and Raman-scattering measurements on cerium vanadate have been performed up to 12 and 16 GPa, respectively. Experiments reveal that at 5.3 GPa the onset of a pressure-induced irreversible phase transition from the zircon to the monazite structure. Beyond this pressure, diffraction peaks and Raman-active modes of the monazite phase are measured. The zircon to monazite transition in CeVO4 is distinctive among the other rare-earth orthovanadates. We also observed softening of external translational Eg and internal B2g bending modes. We attributed it to mechanical instabilities of zircon phase against the pressure-induced distortion. We additionally report lattice-dynamical and total-energy calculations which are in agreement with the experimental results. Finally, the effect of non-hydrostatic stresses on the structural sequence is studied and the equations of state of different phases are reported.
description: 45 pages, 8 figures, 8 tables
Spontaneous Breaking of Conformal Invariance and Trace Anomaly Matching
Creators: name: Schwimmer, Adam
name: Theisen, Stefan
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We argue that when conformal symmetry is spontaneously broken the trace anomalies in the broken and unbroken phases are matched. This puts strong constraints on the various couplings of the dilaton. Using the uniqueness of the effective action for the Goldstone supermultiplet for broken ${\cal N}=1$ superconformal symmetry the dilaton effective action is calculated.
description: 29 pages, 2 figures