cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rural Populations: Using Performance Studies to Understand Treatment and Access to Care Reading List
Creators: name: Sufian, Sandra
name: Case, Gretchen
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: subject: 111717 Primary Health Care
subject: FOS: Health sciences
subject: Health Care
subject: 190404 Drama, Theatre and Performance Studies
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 110305 Emergency Medicine
subject: FOS: Clinical medicine

description: The Health Humanities Portrait, Rural Populations: Using Performance Studies to Understand Treatment and Access to Care, identifies the challenges and differences related to privacy and geographical access in the delivery of health care in a rural or remote setting.
title: 113 - Ajusteur au chemin de fer des usines de Wendel à Moyeuvre-Grande (Moselle)
Creators: name: Généro, Jean-Damien
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025

description: Images et édition numérique (XML, LaTeX, PDF) de *Ajusteur au chemin de fer des usines de Wendel à Moyeuvre-Grande (Moselle), ouvrier journalier dans le système des engagenments volontaires permanents, d'après les renseignements recueillis sur les lieux en 1926 et 1927 par M. Louis Roussel*, série 3, fasc. 21, monographie n°113, 1928, p. 5-44.
description: Source: https://ouvriersdeuxmondes.huma-num.fr/monographie/ajusteur-chemin-fer-usines-wendel-moyeuvre-grande-113
Modeling the scattering polarization of the solar Ca i 4227 Å line with angle-dependent partial frequency redistribution
Creators: name: Janett, Gioele
name: Ballester, Ernest Alsina
name: Guerreiro, Nuno
name: Riva, Simone
name: Belluzzi, Luca
name: Alemán, Tanausú del Pino
name: Bueno, Javier Trujillo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. The correct modeling of the scattering polarization signals observed in several strong resonance lines requires taking partial frequency redistribution (PRD) phenomena into account. Aims. This work aims at assessing the impact and the range of validity of the angle-averaged AA approximation with respect to the general angle-dependent (AD) treatment of PRD effects in the modeling of scattering polarization in strong resonance lines, with focus on the solar Ca i 4227 Å line. Methods. Spectral line polarization is modeled by solving the radiative transfer problem for polarized radiation, under nonlocal thermodynamic equilibrium conditions, taking PRD effects into account, in static one-dimensional semi-empirical atmospheric models presenting arbitrary magnetic fields. The problem is solved through a two-step approach. In step 1, the problem is solved for intensity only, considering a multi-level atom. In step 2, the problem is solved including polarization, considering a two-level atom with an unpolarized and infinitely sharp lower level, and fixing the lower level population calculated at step 1. Results. The results for the Ca i 4227 Å line show a good agreement between the AA and AD calculations for the Q/I and U/I wings signals. However, AA calculations reveal an artificial trough in the line-core peak of the linear polarization profiles, whereas AD calculations show a sharper peak in agreement with observations. Conclusions. An AD treatment of PRD effects is essential to correctly model the line-core peak of the scattering polarization signal of the Ca i 4227 Å line. By contrast, in the considered static case, the AA approximation seems to be suitable to model the wing scattering polarization lobes and their magnetic sensitivity through magneto-optical effects.
On Warped String Vacuum Profiles and Cosmologies, II. Non-Supersymmetric Strings
Creators: name: Mourad, J.
name: Sagnotti, A.
Publisher: name: arXiv
Year: 2021
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: We investigate the effects of the leading tadpole potentials of 10D tachyon-free non-supersymmetric strings in warped products of flat geometries of the type M(p+1) x R x T(10-p-2) depending on a single coordinate. In the absence of fluxes and for p<8, there are two families of these vacua for the orientifold disk-level potential, both involving a finite internal interval. Their asymptotics are surprisingly captured by tadpole-free solutions, isotropic for one family and anisotropic at one end for the other. In contrast, for the heterotic torus-level potential there are four types of vacua. Their asymptotics are always tadpole-dependent and isotropic at one end lying at a finite distance, while at the other end, which can lie at a finite or infinite distance, they can be tadpole-dependent isotropic or tadpole-free anisotropic. We then elaborate on the general setup for including symmetric fluxes, and present the three families of exact solutions that emerge when the orientifold potential and a seven-form flux are both present. These solutions include a pair of boundaries, which are always separated by a finite distance. In the neighborhood of one, they all approach a common supersymmetric limit, while the asymptotics at the other boundary can be tadpole-free isotropic, tadpole-free anisotropic or again supersymmetric. We also discuss corresponding cosmologies, with emphasis on their climbing or descending behavior at the initial singularity. In some cases the toroidal dimensions can contract during the cosmological expansion.
description: 67 pages, LaTeX, 6 tables, 9 eps figures
Black hole mass and angular momentum in topologically massive gravity
Creators: name: Bouchareb, Adel
name: Clement, Gerard
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We extend the Abbott-Deser-Tekin approach to the computation of the Killing charge for a solution of topologically massive gravity (TMG) linearized around an arbitrary background. This is then applied to evaluate the mass and angular momentum of black hole solutions of TMG with non-constant curvature asymptotics. The resulting values, together with the appropriate black hole entropy, fit nicely into the first law of black hole thermodynamics.
description: 20 pages, references added, version to appear in Classical and Quantum Gravity
Emergence of well screened states in a superconducting material of the CaFe$_2$As$_2$ family
Creators: name: Pandeya, Ram Prakash
name: Sakhya, Anup Pradhan
name: Datta, Sawani
name: Saha, Tanusree
name: De Ninno, Giovanni
name: Mondal, Rajib
name: Schlueter, C.
name: Gloskovskii, A.
name: Moras, Paolo
name: Jugovac, Matteo
name: Carbone, Carlo
name: Thamizhavel, A.
name: Maiti, Kalobaran
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Coupling among conduction electrons (e.g. Zhang-Rice singlet) are often manifested in the core level spectra of exotic materials such as cuprate superconductors, manganites, etc. These states are believed to play key roles in the ground state properties and appear as low binding energy features. To explore such possibilities in the Fe-based systems, we study the core level spectra of a superconductor, CaFe$_{1.9}$Co$_{0.1}$As$_2$ (CaCo122) in the CaFe$_2$As$_2$ (Ca122) family employing high-resolution hard $x$-ray photoemission spectroscopy. While As core levels show almost no change with doping and cooling, Ca 2$p$ peak of CaCo122 show reduced surface contribution relative to Ca122 and a gradual shift of the peak position towards lower binding energies with cooling. In addition, we discover emergence of a feature at lower binding energy side of the well screened Fe 2$p$ signal in CaCo122. The intensity of this feature grows with cooling and indicate additional channels to screen the core holes. The evolution of this feature in the superconducting composition and it's absence in the parent compound suggests relevance of the underlying interactions in the ground state properties of this class of materials. These results reveal a new dimension in the studies of Fe-based superconductors and the importance of such states in the unconventional superconductivity in general.
On the relative importance of excluded minors
Creators: name: Hall, R
name: Mayhew, Dillon
name: Van Zwam, Stefan
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: subject: 10199 Pure Mathematics not elsewhere classified
subject: FOS: Mathematics
subject: 10299 Applied Mathematics not elsewhere classified

description: If E is a set of matroids, then EX(E) denotes the set of matroids that have no minor isomorphic to a member of E. If E′ E, we say that E′ is superfluous if EX(E-E′)-EX(E) contains only finitely many 3-connected matroids. We determine the superfluous subsets of six well-known collections of excluded minors. © 2012 Elsevier Inc.
สภาพการใช้เทคโนโลยีสารสนเทศเพื่อการศึกษาของครูผู้สอนช่วงชั้นที่ 3-4 ของโรงเรียนสังกัดสำนักงานเขตพื้นที่การศึกษากรุงเทพมหานคร เขต 3
Creators: name: ศิริวรรณ สุริยันต์
Publisher: name: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี
Year: 2008
Subjects: เทคโนโลยีสารสนเทศเพื่อการศึกษา, เทคโนโลยีคอมพิวเตอร์

description: 2, 2, วารสารวิชาการและวิจัย มทร.พระนคร
การพัฒนารูปแบบการเสริมสร้างภาพลักษณ์ของครูช่างอุตสาหกรรม ที่สำเร็จการศึกษาจากมหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร
Creators: name: นุชนาฎ ผ่องพุฒิ
Publisher: name: มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร
Year: 2008
Subjects: รูปแบบการเสริมสร้างภาพลักษณ์, ครูช่างอุตสาหกรรม

description: 2, 2, วารสารวิชาการและวิจัย มทร.พระนคร
Racial Disparities in Pandemic Care Teaching Guide
Creators: name: Sufian, Sandra
name: Tan, Adrienne
name: Zayir Malik
name: Morton, Laura
name: Seljuk Akturan
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: subject: 220205 History and Philosophy of Medicine
subject: FOS: Other medical sciences
subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences
subject: Diseases
subject: Health Care
subject: 160803 Race and Ethnic Relations
subject: FOS: Sociology

description: This Health Humanities Portrait, Racial Disparities in Pandemic Care, explores the historical roots of racial disparities during the COVID-19 pandemic in the US, especially issues of medical access and quality of care, housing, and police brutality.
ความสัมพันธ์ระหว่างความรู้ เจตคติ และการเรียนรู้ วิชาภาษาอังกฤษเพื่องานนิเทศศาสตร์
Creators: name: เอกชีวา  แซ่ตั๋น
Publisher: name: มหาวิทยาลัยราชภัฎรำไพพรรณี
Year: 2008
Subjects: ความรู้เจตคติ, และการเรียนรู้วิชาภาษาอังกฤษ, ความสัมพันธ์ภาษาอังกฤษเพื่องานนิเทศศาสตร์

description: 2, 2, วารสารวิชาการและวิจัย มทร.พระนคร
On some deterministic dictionaries supporting sparsity
Creators: name: Gurevich, Shamgar
name: Hadani, Ronny
name: Sochen, Nir
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We describe a new construction of an incoherent dictionary, referred to as the oscillator dictionary, which is based on considerations in the representation theory of finite groups. The oscillator dictionary consists of order of p^5 unit vectors in a Hilbert space of dimension p, where p is an odd prime, whose pairwise inner products have magnitude of at most 4/sqrt(p). An explicit algorithm to construct a large portion of the oscillator dictionary is presented.
description: Accepted for publication in the special issue on sparsity (Editors: Albert Cohen, Ronald DeVore, Michael Elad, Anna Gilbert) of the Journal of Fourier Analysis and Applications (2008). Key words: Sparsity, deterministic dictionaries, low coherence, Weil representation, commutative subgroups, eigenfunctions, explicit algorithm
Decoding the spectra of SDSS early-type galaxies: New indicators of age and recent star formation
Creators: name: Rogers, Ben
name: Ferreras, Ignacio
name: Lahav, Ofer
name: Bernardi, Mariangela
name: Kaviraj, Sugata
name: Yi, Sukyoung K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) We apply Principal Component Analysis (PCA) to a sample of early-type galaxies from the Sloan Digital Sky Survey (SDSS) in order to infer differences in their star formation histories. Out of the first few principal components (PC), we study four which give information about stellar populations and velocity dispersion. We construct two parameters (eta and zeta) as linear combinations of PC1 and PC2. We find zeta to be most sensitive to recent episodes of star formation, and eta to be strongly dependent on the average age of the stellar populations. The distribution of the eta component of the composites appear to be indistinguishable between high and low density regions, whereas the distribution of zeta parameters have a significant skew towards lower values for galaxies in low density regions. This result suggests that galaxies in lower density environments are less likely to present weak episodes of recent star formation. In contrast, a significant number of galaxies from our high density subsample -- which includes clusters (both outer regions and centres) and groups -- underwent small but detectable recent star formation at high metallicity, in agreement with recent estimates targeting elliptical galaxies in Hickson Compact Groups and in the field (Ferreras et al.).
description: 19 pages, 12 figures. Accepted for publication in MNRAS
Electromagnetic and gravitational interactions from Lagrangian mechanics
Creators: name: Maraner, Paolo
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: 70G45, 70S20, 83C22, 53B40

description: Background fields of electromagnetic and gravitational type emerge in the low kinetic energy limit of any regular Lagrangian system and, in particular, in the corresponding limit of any spacetime theory in which the free motion of test particles is described by an unspecified regular Lagrangian. Electromagnetic and gravitational type interactions are therefore a universal feature of low kinetic energy Lagrangian systems. These background interactions can be consistently turned into dynamic Einstein-Maxwell fields by promoting the Lagrangian function to a dynamic scalar field on the tangent bundle of the configuration space. Accordingly, Einstein-Maxwell theory can be deduced from the assumption that the motion of elementary test particles in spacetime is described by Lagrangian mechanics. For higher kinetic energy-type values, identified with the square of the invariant mass of the particle, the Lagrangian induces higher rank interactions that seem however too weak to have been detected in spacetime physics, but which might prove relevant at the Planck scale.
description: 27 pages
Racial Disparities in Pandemic Care Reading List
Creators: name: Sufian, Sandra
name: Tan, Adrienne
name: Zayir Malik
name: Seljuk Akturan
name: Morton, Laura
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: subject: 220205 History and Philosophy of Medicine
subject: FOS: Other medical sciences
subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences
subject: Health Care
subject: Diseases
subject: 160803 Race and Ethnic Relations
subject: FOS: Sociology

description: This HHP reading list is meant for students. It is the required pre-reading for the Racial Disparities in Pandemic Care portrait.
This Health Humanities Portrait, Racial Disparities in Pandemic Care, explores the historical roots of racial disparities during the COVID-19 pandemic in the US, especially issues of medical access and quality of care, housing, and police brutality.
Signatures of the orthogonality catastrophe in a coherently driven impurity
Creators: name: Adlong, Haydn S.
name: Liu, Weizhe Edward
name: Turner, Lincoln D.
name: Parish, Meera M.
name: Levinsen, Jesper
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We consider a fixed impurity immersed in a Fermi gas at finite temperature. We take the impurity to have two internal spin states, where the $\uparrow$ state is assumed to interact with the medium such that it exhibits the orthogonality catastrophe, while the $\downarrow$ state is a bare noninteracting particle. Introducing a Rabi coupling between the impurity states therefore allows us to investigate the coupling between a discrete spectral peak and the Fermi-edge singularity, i.e., between states with and without a quasiparticle residue. Combining an exact treatment of the uncoupled impurity Green's functions with a variational approach to treat the Rabi driven dynamics, we find that the system features Rabi oscillations whose frequency scales as a non-trivial power of the Rabi drive at low temperatures. This reflects the power law of the Fermi-edge singularity and, importantly, this behavior is qualitatively different from the case of a mobile impurity quasiparticle where the scaling is linear. We therefore argue that the scaling law serves as an experimentally implementable probe of the orthogonality catastrophe. We additionally simulate rf spectroscopy beyond linear response, finding a remarkable agreement with an experiment using heavy impurities [Kohstall $\textit{et al.}$, Nature $\textbf{485}$, 615 (2012)], thus demonstrating the power of our approach.
Zone center phonons of the orthorhombic RMnO3 (R = Pr, Eu, Tb, Dy, Ho) perovskites
Creators: name: Gupta, Hem Chandra
name: Tripathi, Upendra
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: A short range force constant model (SRFCM) has been applied for the first time to investigate the phonons in RMnO3 (R = Pr, Eu, Tb, Dy, Ho) perovskites in their orthorhombic phase. The calculations with 17 stretching and bending force constants provide good agreement for the observed Raman frequencies. The infrared frequencies have been assigned for the first time. PACS Codes: 36.20.Ng, 33.20.Fb, 34.20.Cf
description: 8 pages, 1 figure
Delta Hedging with Transaction Costs: Dynamic Multiscale Strategy using Neural Nets
Creators: name: Mazzei, G.
name: Bellora, F. G.
name: Serur, J. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Risk Management (q-fin.RM)
subject: FOS: Economics and business

description: In most real scenarios the construction of a risk-neutral portfolio must be performed in discrete time and with transaction costs. Two human imposed constraints are the risk-aversion and the profit maximization, which together define a nonlinear optimization problem with a model-dependent solution. In this context, an optimal fixed frequency hedging strategy can be determined a posteriori by maximizing a sharpe ratio simil path dependent reward function. Sampling from Heston processes, a convolutional neural network was trained to infer which period is optimal using partial information, thus leading to a dynamic hedging strategy in which the portfolio is hedged at various frequencies, each weighted by the probability estimate of that frequency being optimal.
Stein interpolation for the real interpolation method
Creators: name: Lindemulder, Nick
name: Lorist, Emiel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary: 46B70, Secondary 46M35

description: We prove a complex formulation of the real interpolation method, showing that the real and complex interpolation methods are not inherently real or complex. Using this complex formulation, we prove Stein interpolation for the real interpolation method. We apply this theorem to interpolate weighted $L^p$-spaces and the sectoriality of closed operators with the real interpolation method.
description: 15 pages, slightly improved presentation
Political Corruption and Minority Capture
Creators: name: Giannoccolo, Pierpaolo
name: Lisciandra, Maurizio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: SECS-P/02 Politica economica

description: This analysis investigates a political corruption model that builds on previous literature on corruption in hierarchies. Our study enriches the literature on political corruption emphasizing the contrasting role of the minorities having a control role of the majorities. In particular, this paper provides a set-up for the conditions in which a briber can choose between either bribing only the majority and accepting the monitoring of the minority, or alternatively, bribing also the minority, which gives up to its control role and increases the probability of success of the illicit action.
Minorities can exploit their typical monitoring role in modern democracies either to gain a reputational premium or to get involved in bribing and raising higher stakes. Thus, policy-makers face a sort of paradox when attempting to strengthen the control role of minorities and reduce corrupt behavior because this may cause the opposite effect of inducing the minorities to get involved into the illicit activity and, eventually, spread the corruption disease.
title: Generalization Boost in Bimodal Classification via Data Fusion Trained on Sparse Datasets
Creators: name: Yu, Wentao
name: Kolossa, Dorothea
name: Nickel, Robert
Publisher: name: Technische Universität Berlin
Year: 2024
Subjects: subject: 000 Informatik, Informationswissenschaft, allgemeine Werke::000 Informatik, Wissen, Systeme::004 Datenverarbeitung; Informatik
subject: bimodal multiclass classifcation
subject: data fusion
subject: robustness
subject: regular ization
subject: jointly Gaussian feature models

description: For internet users it is frequently challenging to properly navigate and interpret the overwhelming amount of information available to them. Multimodal artificial intelligence (AI) systems can aid in the process; for example, by helping to debunk misinformation, or by placing video content into a proper context. The training of commensurate AI systems requires the labelling of sizable multimodal datasets, a process that is very time-consuming and prone to being outpaced by the rapid changes of the information landscape. To address this problem, we are introducing a hybrid fusion algorithm, Bimodal Gaussian-Logits glObal stream Weighting (BiGLOW), which performs effective information integration in scenarios in which only a very limited amount of bimodally labelled training data is available. The method is motivated from Bayesian inference; we model a modality-weighted linear combination of differences in logits between class pairs through a Gaussian distribution. We evaluated the proposed method with two bimodal multiclass datasets: the Fakeddit dataset for fake news classification and the TAU Audio-Visual Urban Scenes 2021 for urban scene identification. The two datasets capture four of the most frequently used modalities on the web: text, images, audio, and video. Scenarios with scarce training data were created by reducing the respective size of the bimodally labelled set to various small fractions of the overall data size. Our experimental results indicate that the proposed hybrid fusion algorithm surpasses competing purely neural-network-based models in terms of the model complexity, average accuracy, robustness, and time requirements for both model training and evaluation. We attribute the improved performance of the proposed method to its implied, Bayesian inference inspired regularization.
Letter from Kathleen Raine to Robin Skelton, November 12, [1970]
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Wiccans
valueUri: http://id.worldcat.org/fast/1765210
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
subject: Skelton, Robin
valueUri: http://id.worldcat.org/fast/51853
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672
subject: Novelists
valueUri: http://id.worldcat.org/fast/1039684
subject: Platonists
valueUri: http://id.worldcat.org/fast/1066881
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Editors
valueUri: http://id.worldcat.org/fast/902475
subject: Philosophy
valueUri: http://id.worldcat.org/fast/1060777
subject: FOS: Philosophy, ethics and religion
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171

description: Part of a collection of correspondence from Kathleen Raine to Robin Skelton. Skelton was a British poet, academic, anthologist, and practicing Wiccan. He taught at Manchester University before emigrating to Canada in 1963, where he taught creative writing at the University of Victoria and started the literary magazine The Malahat Review. Also included are some letters to Skelton’s wife Sylvia, and his daughters. Spanning close to forty-five years, the correspondence discusses poetry, writing, and philosophy; particularly Platonism and Neoplatonism. Raine often refers to the writings of William Blake and W. B. Yeats. Many letters also mention contemporary literary figures at the time including: Herbert Read, Peter Russell, Liam Miller, and Thurairajah Tambimuttu. In this letter, Raine thanks Skelton for a letter and discusses the health of her parents and Skelton's in-laws the Jarretts'.
Single-flavor CSL phase in compact stars
Creators: name: Blaschke, David
name: Sandin, Fredrik
name: Klahn, Thomas
name: Berdermann, Jens
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We suggest a scenario where the three light quark flavors are sequentially deconfined under increasing pressure in cold asymmetric nuclear matter as e.g. in neutron stars. The basis for our analysis is a chiral quark matter model of Nambu--Jona-Lasinio (NJL) type with diquark pairing in the spin-1 single flavor (CSL), spin-0 two flavor (2SC) and three flavor (CFL) channels. We find that nucleon dissociation sets in at about the saturation density, n_0, when the down-quark Fermi sea is populated (d-quark dripline) due to the flavor asymmetry induced by beta-equilibrium and charge neutrality. At about 3n_0 u-quarks appear and a two-flavor color superconducting (2SC) phase is formed. The s-quark Fermi sea is populated only at still higher baryon density, when the quark chemical potential is of the order of the dynamically generated strange quark mass. We construct two different hybrid equations of state (EoS) using the Dirac-Brueckner Hartree-Fock (DBHF) approach and the EoS by Shen et al in the nuclear matter sector. The corresponding hybrid star sequences have maximum masses of, respectively, 2.1 and 2.0 M_solar. Two- and three-flavor quark-matter phases exist only in gravitationally unstable hybrid star solutions in the DBHF case, while the Shen-based EoS produce stable configurations with a 2SC phase component in the core of massive stars. Nucleon dissociation due to d-quark drip at the crust-core boundary fulfills basic criteria for a deep crustal heating process which is required to explain superbusts as well as cooling of X-ray transients.
description: 10 pages, 10 figures, Presented at Joint Meeting Heidelberg-Liege-Paris-Wroclaw: Three Days of Strong Interactions and Astrophysics (HLPW08), Spa, Liege, Belgium, 6-8 Mar 2008
Geometrically induced singular behavior of entanglement
Creators: name: Cavalcanti, D.
name: Saldanha, P. L.
name: Cosme, O.
name: Brandao, F. G. S. L.
name: Monken, C. H.
name: Padua, S.
name: Santos, M. Franca
name: Cunha, M. O. Terra
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that the geometry of the set of quantum states plays a crucial role in the behavior of entanglement in different physical systems. More specifically it is shown that singular points at the border of the set of unentangled states appear as singularities in the dynamics of entanglement of smoothly varying quantum states. We illustrate this result by implementing a photonic parametric down conversion experiment. Moreover, this effect is connected to recently discovered singularities in condensed matter models.
description: v2: 4 pags, 4 figs. A discussion before the proof of Proposition 1 and tomographic results were included, Propostion 2 was removed and the references were fixed
Quantum imaginary time evolution steered by reinforcement learning
Creators: name: Cao, Chenfeng
name: An, Zheng
name: Hou, Shi-Yao
name: Zhou, D. L.
name: Zeng, Bei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantum imaginary time evolution is a powerful algorithm for preparing the ground and thermal states on near-term quantum devices. However, algorithmic errors induced by Trotterization and local approximation severely hinder its performance. Here we propose a deep reinforcement learning-based method to steer the evolution and mitigate these errors. In our scheme, the well-trained agent can find the subtle evolution path where most algorithmic errors cancel out, enhancing the fidelity significantly. We verified the method's validity with the transverse-field Ising model and the Sherrington-Kirkpatrick model. Numerical calculations and experiments on a nuclear magnetic resonance quantum computer illustrate the efficacy. The philosophy of our method, eliminating errors with errors, sheds light on error reduction on near-term quantum devices.
description: 11 pages, 7 figures
Thermodynamic Properties of Ferromagnetic Mott- Insulators GaV4S8
Creators: name: Yadav, C. S.
name: Nigam, A. K.
name: Rastogi, A. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present the results of the magnetic and specific heat measurements on V4 tetrahedral-cluster compound GaV4S8 between 2 to 300K. We find two transitions related to a structural change at 42K followed by ferromagnetic order at 12K on cooling. Remarkably similar properties were previously reported for the cluster compounds of Mo4. These compounds show an extremely high density of low energy excitations in their electronic properties. We explain this behavior in a cluster compound as due to the reduction of coulomb repulsion among electrons that occupy highly degenerate orbits of different clusters.
description: To be publish in Physica B
Universal linear optics by programmable multimode interference
Creators: name: Larocque, Hugo
name: Englund, Dirk
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We introduce a constructive algorithm for universal linear electromagnetic transformations between the $N$ input and $N$ output modes of a dielectric slab. The approach uses out-of-plane phase modulation programmed down to $N^2$ degrees of freedom. The total area of these modulators equals that of the entire slab: our scheme satisfies the minimum area constraint for programmable linear optical transformations. We also present error correction schemes that enable high-fidelity unitary transformations at large $N$. This ``programmable multimode interferometer'' (ProMMI) thus translates the algorithmic simplicity of Mach-Zehnder meshes into a holographically programmed slab, yielding DoF-limited compactness and error tolerance while eliminating the dominant sidewall-related optical losses and directional-coupler-related patterning challenges.
description: 17 pages, 7 figures
Letter from Kathleen Raine to Robin Skelton, [January 24, 1972]
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Editors
valueUri: http://id.worldcat.org/fast/902475
subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672
subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884
subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171
subject: Skelton, Robin
valueUri: http://id.worldcat.org/fast/51853
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Novelists
valueUri: http://id.worldcat.org/fast/1039684
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718
subject: Philosophy
valueUri: http://id.worldcat.org/fast/1060777
subject: FOS: Philosophy, ethics and religion
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Platonists
valueUri: http://id.worldcat.org/fast/1066881
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Wiccans
valueUri: http://id.worldcat.org/fast/1765210

description: Part of a collection of correspondence from Kathleen Raine to Robin Skelton. Skelton was a British poet, academic, anthologist, and practicing Wiccan. He taught at Manchester University before emigrating to Canada in 1963, where he taught creative writing at the University of Victoria and started the literary magazine The Malahat Review. Also included are some letters to Skelton’s wife Sylvia, and his daughters. Spanning close to forty-five years, the correspondence discusses poetry, writing, and philosophy; particularly Platonism and Neoplatonism. Raine often refers to the writings of William Blake and W. B. Yeats. Many letters also mention contemporary literary figures at the time including: Herbert Read, Peter Russell, Liam Miller, and Thurairajah Tambimuttu. In this letter, Raine discusses her recent work on a lecture, and debates who to publish her work with, and financial considerations of what to write next.
Which molecule traces what: chemical diagnostics of protostellar sources
Creators: name: Tychoniec, Łukasz
name: van Dishoeck, Ewine F.
name: Hoff, Merel L. R. van 't
name: van Gelder, Martijn L.
name: Tabone, Benoît
name: Chen, Yuan
name: Harsono, Daniel
name: Hull, Charles L. H.
name: Hogerheijde, Michiel R.
name: Murillo, Nadia M.
name: Tobin, John J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The physical and chemical conditions in Class 0/I protostars are fundamental in unlocking the protostellar accretion process and its impact on planet formation. The aim is to determine which physical components are traced by different molecules at sub-arcsecond scales (100 - 400 au). We use a suite of Atacama Large Millimeter/submillimeter Array (ALMA) datasets in Band 6 (1 mm), Band 5 (1.8 mm) and Band 3 (3 mm) at spatial resolutions 0.5 - 3" for 16 protostellar sources. The protostellar envelope is well traced by C$^{18}$O, DCO$^+$ and N$_2$D$^+$, with the freeze-out of CO governing the chemistry at envelope scales. Molecular outflows are seen in classical shock tracers like SiO and SO, but ice-mantle products such as CH$_3$OH and HNCO released with the shock are also observed. The molecular jet is prominent not only in SiO and SO but also occasionally in H$_2$CO. The cavity walls show tracers of UV-irradiation such as C$_2$H c-C$_3$H$_2$ and CN. The hot inner envelope, apart from showing emission from complex organic molecules (COMs), also presents compact emission from small molecules like H$_2$S, SO, OCS and H$^{13}$CN, most likely related to ice sublimation and high-temperature chemistry. Sub-arcsecond millimeter-wave observations allow to identify those (simple) molecules that best trace each of the physical components of a protostellar system. COMs are found both in the hot inner envelope (high excitation lines) and in the outflows (lower-excitation lines) with comparable abundances. COMs can coexist with hydrocarbons in the same protostellar sources, but they trace different components. In the near future, mid-IR observations with JWST-MIRI will provide complementary information about the hottest gas and the ice mantle content, at unprecedented sensitivity and at resolutions comparable to ALMA for the same sources.
description: 38 pages, 33 figures, accepted for publication to A\&A
Theoretical framework for the atomistic modeling of frequency-dependent liquid-solid friction
Creators: name: Oga, Haruki
name: Omori, Takeshi
name: Herrero, Cecilia
name: Merabia, Samy
name: Joly, Laurent
name: Yamaguchi, Yasutaka
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Nanofluidics shows great promise for energy conversion and desalination applications. The performance of nanofluidic devices is controlled by liquid-solid friction, quantified by the Navier friction coefficient (FC). Despite decades of research, there is no well-established generic framework to determine the frequency dependent Navier FC from atomistic simulations. Here, we have derived analytical expressions to connect the Navier FC to the random force autocorrelation on the confining wall, from the observation that the random force autocorrelation can be related to the hydrodynamic boundary condition, where the Navier FC appears. The analytical framework is generic in the sense that it explicitly includes the system size dependence and also the frequency dependence of the FC, which enabled us to address (i) the long-standing plateau issue in the evaluation of the FC and (ii) the non-Markovian behavior of liquid-solid friction of a Lennard-Jones liquid and of water on various walls and at various temperatures, including the supercooled regime. This new framework opens the way to explore the frequency dependent FC for a wide range of complex liquids.
description: 5 pages, 3 figures
Observation of Spin Glass Dynamics in Dilute LiHo$_x$Y$_{1-x}$F$_4$
Creators: name: Quilliam, J. A.
name: Meng, S.
name: Mugford, C. G. A.
name: Kycia, J. B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: AC susceptibility measurements are presented on the dilute, dipolar coupled, Ising magnet LiHo$_x$Y$_{1-x}$F$_4$ for a concentration $x = 0.045$. The frequency and temperature dependences of the susceptibility show characteristic glassy relaxation. The absorption spectrum is found to broaden with decreasing temperature suggesting that the material is behaving as a spin glass and not as an exotic spin liquid as was previously observed. A dynamical scaling analysis suggests a spin glass transition temperature of 42.6 mK $\pm 2$ mK with an exponent $zν= 7.8 \pm 0.23$.
Supplementary Information from Two-Round Ca2+ transients in papillae by mechanical stimulation induces metamorphosis in the ascidian Ciona intestinalis type A
Creators: name: Wakai, Maiki K.
name: Nakamura, Mitsuru J.
name: Sawai, Satoshi
name: Hotta, Kohji
name: Oka, Kotaro
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Neuroscience
subject: Developmental Biology
subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Methods, Figures and Tables
Non-Gaussianity and purity in finite dimension
Creators: name: Genoni, Marco G.
name: Paris, Matteo G. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We address truncated states of continuous variable systems and analyze their statistical properties numerically by generating random states in finite-dimensional Hilbert spaces. In particular, we focus to the distribution of purity and non-Gaussianity for dimension up to d=21. We found that both quantities are distributed around typical values with variances that decrease for increasing dimension. Approximate formulas for typical purity and non-Gaussianity as a function of the dimension are derived.
description: 7 pages, 4 figures
Phase diagram and spin waves in the frustrated ferro-antiferromagnet SrZnVO(PO4)2
Creators: name: Landolt, Florian
name: Yan, Zewu
name: Gvasaliya, Severian
name: Beauvois, Ketty
name: Ressouche, Eric
name: Xu, Jianhui
name: Zheludev, Andrey
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Single crystals of the frustrated S=1/2 ferro-antiferromagnetic proximate square lattice material SrZnZnVO(PO$_4$)$_2$ are studied in magnetometric, calorimetric, neutron diffraction and inelastic neutron scattering experiments. The measured spin wave spectrum reveals a substantial degree of magnetic frustration and a large quantum renormalization of the exchange constants. The H-T magnetic phase diagram is established. It features a novel pre-saturation phase, which appears for only one particular field orientation. The results are discussed noting the similarities and differences with the previously studied and similarly structured Pb$_2$VO(PO$_4$)$_2$ compound.
description: 8 pages, 8 figures, submitted to PRB
SN 2005ap: A Most Brilliant Explosion
Creators: name: Quimby, Robert M.
name: Aldering, Greg
name: Wheeler, J. Craig
name: Höflich, Peter
name: Akerlof, Carl W.
name: Rykoff, Eli S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present unfiltered photometric observations with ROTSE-III and optical spectroscopic follow-up with the HET and Keck of the most luminous supernova yet identified, SN 2005ap. The spectra taken about 3 days before and 6 days after maximum light show narrow emission lines (likely originating in the dwarf host) and absorption lines at a redshift of z=0.2832, which puts the peak unfiltered magnitude at -22.7 +/- 0.1 absolute. Broad P-Cygni features corresponding to H-alpha, CIII, NIII, and OIII, are further detected with a photospheric velocity of ~20,000 km/s. Unlike other highly luminous supernovae such as 2006gy and 2006tf that show slow photometric evolution, the light curve of SN 2005ap indicates a 1-3 week rise to peak followed by a relatively rapid decay. The spectra also lack the distinct emission peaks from moderately broadened (FWHM ~ 2,000 km/s) Balmer lines seen in SN 2006gy and SN 2006tf. We briefly discuss the origin of the extraordinary luminosity from a strong interaction as may be expected from a pair instability eruption or a GRB-like engine encased in a H/He envelope.
description: ApJ Letters Accepted; 4 pages
Poly(Ionic Liquid) Block Copolymer Gated Organic Thin-Film Transistors
Creators: name: Peltekoff, Alexander
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2021
Subjects: Organic Thin-Film Transistors
Poly(ionic liquid)

description: Since the discovery of organic semiconductors (OSCs) over four decades ago, the field of organic electronics has broken our misconceptions regarding the possibilities of modern electronics. The synthetic toolkit of organic chemistry enables the creation of a limitless number of unique OSCs that can be specifically tailored and engineered with the specific and desired properties for unique applications. The rapid adoption of modern information systems, “Internet of Things,” in which smart devices and sensors ubiquitously collect and exchange data has resulted in a need for low-cost sensors to be deployed everywhere from the monitoring of food supply chains, environmental conditions, to human health. Organic thin-film transistors (OTFTs) are a necessary component to support these technologies. However, their mass adoption will require reduction in cost and improved compatibility with low voltage generating printed batteries or flexible and ultrathin photovoltaics. This thesis is focused on the development of high performing solid state polymer electrolytes to be employed as the gating medium in OTFTs. The choice of conventional gating materials often leads to a tradeoff between high capacitance, operating speed and material softness. For example liquid electrolyte gating materials have high capacitance but low operating speed and are liquid at room temperature which is unacceptable for many electronics application. Polymer gating materials often have lower capacitance but fast operating conditions and solid at room temperature. In this thesis we establish structure property relationships which aid in the design of novel block copolymer-based gating materials which simultaneously enable the increase in capacitance and switching speed while remaining solid at room temperature. In the first study I established a styrene-based ionic liquid monomer can be using as a controlling monomer in the nitroxide mediated copolymerization of methacrylates. The second study then focuses on the integration of these materials into OTFT devices; the morphology (block vs random copolymers) effect on device performance is assessed. The last study builds on the findings of the previous study and further explores the structural elements of block copolymers on device performance. The work presented here outlines the development of advanced poly(ionic liquid) based solid electrolyte materials that enables both reduced operating voltages and fast switching. Finally, we establish structure-property relationships that relate the molecular architecture to OTFT device performance paving the way for the adoption of a new generation of high performing, printable and flexible electronics.
Giant magnetoresistance in nanoscale ferromagnetic heterocontacts
Creators: name: Useinov, A. N.
name: Deminov, R. G.
name: Tagirov, L. R.
name: Pan, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A quasiclassical theory of giant magnetoresistance in nanoscale point contacts between different ferromagnetic metals is developed. The contacts were sorted by three types of mutual positions of the conduction spin-subband bottoms which are shifted one against another by the exchange interaction. A model of linear domain wall has been used to account for the finite contact length. The magnetoresistance is plotted against the size of the nanocontact. In heterocontacts the magnetoresistance effect turned out to be not only negative, as usual, but can be positive as well. Relevance of the results to existing experiments on GMR in point heterocontacts is discussed.
description: 10 pages, 4 figures