cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New Constructions of Slice Links
Creators: name: Cochran, Tim D.
name: Friedl, Stefan
name: Teichner, Peter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 57M25

description: We use techniques of Freedman and Teichner to prove that, under certain circumstances, the multi-infection of a slice link is again slice (not necessarily smoothly slice). We provide a general context for proving links are slice that includes many of the previously known results.
description: 19 pages
Tourist Language Learning: A Way of Grasping Human Interaction
Creators: name: Nekić, Melani
Publisher: name: KULT_online
Year: 2009

description: Learning the Arts of Linguistic Survival: Languaging, Tourism, Life represents a critical analysis of the motivation for as well as nature and impact of human interaction in multilingual and multicultural tourist language-learning settings. This is approached from a variety of disciplinary perspectives, including modern languages education, anthropology, linguistics, and sociology as well as tourism and intercultural and literary studies. Commencing with an identification of “commonplaces of language pedagogy, communicative learning and intercultural communicative competence” (p. 2) in chapters 1 and 2, this monograph further invites and encourages readers to travel, both imaginatively and physically, through various dimensions of tourist language learning. Thus, chapters 3 through 9 are dedicated to instances of risk, way finding and the following of directions, pronunciation, conversations, games, speech rehearsal, and the concept of “breaking English”. The final two chapters provide an in-depth recapitulation of the “gains and pains” of tourist language learning as forms of the human need for survival.
description: KULT_online, Nr. 19 (2009): KULT_online 19 (2009)
On classes of local unitary transformations
Creators: name: Jing, Naihuan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Group Theory (math.GR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We give a one-to-one correspondence between classes of density matrices under local unitary invariance and the double cosets of unitary groups. We show that the interrelationship among classes of local unitary equivalent multi-partite mixed states is independent from the actual values of the eigenvalues and only depends on the multiplicities of the eigenvalues. The interpretation in terms of homogeneous spaces of unitary groups is also discussed.
description: 10 pages. Added Figure and modified Ex
Additional file 1 of Functional analysis of sense organ specification in the Tribolium castaneum larva reveals divergent mechanisms in insects
Creators: name: Klann, Marleen
name: Schacht, Magdalena Ines
name: Benton, Matthew Alan
name: Stollewerk, Angelika
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Zoology

description: Additional file 1: ‘Functional analysis of sense organ specification in the Tribolium castaneum larva reveals divergent mechanisms in insects’: Supplementary figures and tables. The file contains Figures S1-S7 and Tables S1-S9 in pdf format.
Additional file 1 of Immunoglobulin G1 subclass responses can be used to detect specific allergy to the house dust mites Dermatophagoides farinae and Dermatophagoides pteronyssinus in atopic dogs
Creators: name: N. Khantavee
name: C. Chanthick
name: A. Tungtrongchitr
name: N. Techakriengkrai
name: S. Suradhat
name: N. Sookrung
name: S. Roytrakul
name: Prapasarakul, N.
Publisher: name: figshare
Year: 2021
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 1: Supplementary Table 1. Sensitivity and specificity (%) of in-house ELISAs through different type of specific immunoglobulins.
Polarization measurement for the dileptonic channel of $W^+ W^-$ scattering using generative adversarial network
Creators: name: Li, Jinmian
name: Zhang, Cong
name: Zhang, Rao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measuring the polarization fractions of the $W^+W^-$ scattering reveals the interactions of the Higgs boson as well as new neutral states that are related to the standard model electroweak symmetry breaking. The dileptonic channel has a relatively lower background rate, but the kinematics of its final states can not be fully reconstructed due to the presence of two neutrinos. We propose neural networks to establish maps between the distributions of measurable quantities and the distributions of the lepton angles in $W$ boson rest frames. New physics contributions and collision energy can largely affect the kinematic properties of the $W^+W^-$ scattering beside the lepton angles. To make the network in ignorance of that information, the loss function is modified in two different ways. We show that the networks are promising in reproducing the lepton angle distributions, and the precision of the fitted polarization fractions obtained from network predictions is comparable to that obtained with the truth lepton angle. Although the best-fit values of polarization fractions do not change much after including the background uncertainty, the precisions is substantially reduced. Our trained models are available at GitHub.
description: 20 pages, 10 figures, version accepted for publication in PRD
IRAS08281-4850 and IRAS14325-6428: two A-type post-AGB stars with s-process enrichment
Creators: name: Reyniers, M.
name: Van de Steene, G. C.
name: van Hoof, P. A. M.
name: Van Winckel, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: One of the puzzling findings in the study of the chemical evolution of (post-)AGB stars is why very similar stars (in terms of metallicity, spectral type, infrared properties, etc...) show a very different photospheric composition. We aim at extending the still limited sample of s-process enriched post-AGB stars, in order to obtain a statistically large enough sample that allows us to formulate conclusions concerning the 3rd dredge-up occurrence. We selected two post-AGB stars on the basis of IR colours indicative of a past history of heavy mass loss: IRAS08281-4850 and IRAS14325-6428. They are cool sources in the locus of the Planetary Nebulae (PNe) in the IRAS colour-colour diagram. Abundances of both objects were derived for the first time on the basis of high-quality UVES and EMMI spectra, using a critically compiled line list with accurate log(gf) values, together with the latest Kurucz model atmospheres. Both objects have very similar spectroscopically defined effective temperatures of 7750-8000K. They are strongly carbon and s-process enriched, with a C/O ratio of 1.9 and 1.6, and an [ls/Fe] of +1.7 and +1.2, for IRAS08281 and IRAS14325 resp. Moreover, the spectral energy distributions (SEDs) point to heavy mass-loss during the preceding AGB phase. IRAS08281 and IRAS14325 are prototypical post-AGB objects in the sense that they show strong post 3rd dredge-up chemical enrichments. The neutron irradiation has been extremely efficient, despite the only mild sub-solar metallicity. This is not conform with the recent chemical models. The existence of very similar post-AGB stars without any enrichment emphasizes our poor knowledge of the details of the AGB nucleosynthesis and dredge-up phenomena. We call for a very systematic chemical study of all cool sources in the PN region of the IRAS colour-colour diagram.
description: 8 pages, 6 figures, accepted by A&A
THE RISE OF AGILE METHODOLOGIES IN MANAGING COMPLEX BUSINESS PROJECTS: ENHANCING EFFICIENCY, COLLABORATION, AND ADAPTABILITY
Creators: name: Mbonigaba Celestin*, S. Sujatha**, A. Dinesh Kumar*** &  M. Vasuki****
Publisher: name: Zenodo
Year: 2024

description: Agile project management has rapidly emerged as a key methodology for managing complex business projects, emphasizing adaptability, customer satisfaction, and team collaboration. This study aimed to evaluate the impact of Agile methodologies on organizational efficiency across various industries. Using a qualitative approach, data were gathered through literature reviews, case studies, and interviews with professionals experienced in Agile practices. The results showed that 70% of organizations reported improved team performance after adopting Agile, with a 35% increase in team collaboration and a 25% reduction in time-to-market. However, challenges such as resistance to change (impacting 70% of businesses) and the scarcity of skilled practitioners (39% availability) were noted. The study concludes that while Agile significantly enhances organizational responsiveness and innovation, successful implementation requires strategic planning and continuous training.
The Dark-Matter Fraction in the Elliptical Galaxy Lensing the Quasar PG1115+080
Creators: name: Pooley, D.
name: Rappaport, S.
name: Blackburne, J.
name: Schechter, P. L.
name: Schwab, J.
name: Wambsganss, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We determine the most likely dark-matter fraction in the elliptical galaxy quadruply lensing the quasar PG1115+080 based on analyses of the X-ray fluxes of the individual images in 2000 and 2008. Between the two epochs, the A2 image of PG1115+080 brightened relative to the other images by a factor of six in X-rays. We argue that the A2 image had been highly demagnified in 2000 by stellar microlensing in the intervening galaxy and has recently crossed a caustic, thereby creating a new pair of micro-images and brightening in the process. Over the same period, the A2 image has brightened by a factor of only 1.2 in the optical. The most likely ratio of smooth material (dark matter) to clumpy material (stars) in the lensing galaxy to explain the observations is ~90% of the matter in a smooth dark-matter component and ~10% in stars.
description: 7 pages, 9 figures, submitted to ApJ
The least singular value of a random square matrix is O(n^{-1/2})
Creators: name: Rudelson, Mark
name: Vershynin, Roman
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 15A52

description: Let A be a matrix whose entries are real i.i.d. centered random variables with unit variance and suitable moment assumptions. Then the smallest singular value of A is of order n^{-1/2} with high probability. The lower estimate of this type was proved recently by the authors; in this note we establish the matching upper estimate.
description: 6 pages
Diagonalization and representation results for nonpositive sesquilinear form measures
Creators: name: Hytonen, Tuomas
name: Pellonpaa, Juha-Pekka
name: Ylinen, Kari
Publisher: name: arXiv
Year: 2007
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47A70 (Primary), 47A07, 47B15 (Secondary)

description: We study decompositions of operator measures and more general sesquilinear form measures $E$ into linear combinations of positive parts, and their diagonal vector expansions. The underlying philosophy is to represent $E$ as a trace class valued measure of bounded variation on a new Hilbert space related to $E$. The choice of the auxiliary Hilbert space fixes a unique decomposition with certain properties, but this choice itself is not canonical. We present relations to Naimark type dilations and direct integrals.
description: J. Math. Anal. Appl., in press
Deeptime: a Python library for machine learning dynamical models from time series data
Creators: name: Hoffmann, Moritz
name: Scherer, Martin
name: Hempel, Tim
name: Mardt, Andreas
name: de Silva, Brian
name: Husic, Brooke E.
name: Klus, Stefan
name: Wu, Hao
name: Kutz, Nathan
name: Brunton, Steven L.
name: Noé, Frank
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: Machine Learning (cs.LG)
subject: Mathematical Physics (math-ph)
subject: Computational Physics (physics.comp-ph)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Generation and analysis of time-series data is relevant to many quantitative fields ranging from economics to fluid mechanics. In the physical sciences, structures such as metastable and coherent sets, slow relaxation processes, collective variables dominant transition pathways or manifolds and channels of probability flow can be of great importance for understanding and characterizing the kinetic, thermodynamic and mechanistic properties of the system. Deeptime is a general purpose Python library offering various tools to estimate dynamical models based on time-series data including conventional linear learning methods, such as Markov state models (MSMs), Hidden Markov Models and Koopman models, as well as kernel and deep learning approaches such as VAMPnets and deep MSMs. The library is largely compatible with scikit-learn, having a range of Estimator classes for these different models, but in contrast to scikit-learn also provides deep Model classes, e.g. in the case of an MSM, which provide a multitude of analysis methods to compute interesting thermodynamic, kinetic and dynamical quantities, such as free energies, relaxation times and transition paths. The library is designed for ease of use but also easily maintainable and extensible code. In this paper we introduce the main features and structure of the deeptime software.
Electrical conductivities and low frequency opacities in the warm dense matter regime
Creators: name: Tacu, Mikael
name: Pain, Jean-Christophe
name: Pautard, Matthias
name: Blancard, Christophe
Publisher: name: arXiv
Year: 2025
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In this article, we examine different approaches for calculating low frequency opacities in the warm dense matter regime. The relevance of the average-atom approximation and of different models for calculating opacities, such as the Ziman or Ziman-Evans models is discussed and the results compared to \textit{ab initio} simulations. We begin by recalling the derivation of the Ziman-Evans resistivity from Kubo's linear response theory, using the local approximation to the solutions of the Lippmann-Schwinger equation. With the help of this approximation, we explicitly introduce an ionic structure factor into the Ziman formula, without resorting to the Born approximation. Both approaches involve the calculation of scattering phase shifts, which we integrate from Calogero equation with an adaptive step numerical scheme based on a Runge-Kutta-Merson solver. We show that if the atomic number $Z$ is not too large, integrating the phase shifts in this way is more time-efficient than using a classical Numerov-type scheme to solve the radial Schrödinger equation. Various approximations are explored for phase shifts to further improve computation time. For the Born approximation, we show that using Born phase shifts directly in the scattering cross-section gives more accurate results than with the integral formula based on the Fourier transform of the electron-ion potential. We also compare an analytical formula based on a Yukawa fit of the electron-ion potential to a numerical integration. The average-atom results are compared with DFT-based molecular dynamics simulations for aluminum in the dilute regime and for copper, aluminum and gold at solid density and different temperatures.
description: submitted to "Contributions to Plasma Physics"
A comment on "Computational periodicity as observed in a simple system," by Edward N. Lorenz (2006a)
Creators: name: Yao, Lun-Shin
name: Hughes, Dan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: This paper has been withdrawn by the authors as requested by the journal.
description: This paper has been withdrawn by the authors as requested by the journal
Additional file 1 of Self-directed learning by video as a means to improve technical skills in surgery residents: a randomized controlled trial
Creators: name: Chartrand, Geneviève
name: Soucisse, Mikael
name: Dubé, Pierre
name: Jean-Sébastien Trépanier
name: Drolet, Pierre
name: Sideris, Lucas
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1.
Twin Quark Dark Matter From Cogenesis
Creators: name: Kilic, Can
name: Verhaaren, Christopher B.
name: Youn, Taewook
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We extend the fraternal twin Higgs scenario to include a novel dark matter candidate as well as a mechanism for generating a matter/antimatter asymmetry in both sectors. A spontaneous breaking of twin color results in quark degrees of freedom that are singlets under the residual twin color group. These twin-color-singlet quarks, along with a subdominant component of twin leptons, constitute the asymmetric dark matter. The asymmetry between matter in antimatter in both sectors is co-generated from the decay of singlet fermions that provide an additional portal between the visible and twin sectors. We discuss the phenomenological aspects of this model, evaluating constraints on the parameter space and highlighting promising discovery channels in future experiments. We briefly discuss how the discovery of signals in multiple experiments may help establish the connection between the mechanisms that address the naturalness, dark matter and matter/antimatter asymmetry puzzles.
description: 32 pages, 11 figures; v3: Minor changes. Matches published version
Exploring the limits of single emitter detection in fluorescence and extinction
Creators: name: Wrigge, Gert
name: Hwang, Jaesuk
name: Gerhardt, Ilja
name: Zumofen, Gert
name: Sandoghdar, Vahid
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present an experimental comparison and a theoretical analysis of the signal-to-noise ratios in fluorescence and extinction spectroscopy of a single emitter. We show that extinction measurements can be advantageous if the emitter is weakly excited. Furthermore, we discuss the potential of this method for the detection and spectroscopy of weakly emitting systems such as rare earth ions.
description: 11 pages, 5 figures
title: The Impact of Peer Observational Learning on Honesty Following a Transgression
Creators: name: Sliman, Hannah M.
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 2024

description: Parents and teachers concerns about the development and socialization of lying aligns with research suggesting that persistent lying is related with delinquency, aggression, and conduct problems. We were interested in examining the difference between two groups: Honest and Praise (HP), and Control Group (CG) for the extent to which exposure to the experimental condition influenced a child’s decision to be honest and confess after a transgression. The study was designed to examine the extent to which observing peers of similar age receiving praise for being honest can promote honesty amongst children. Further, the study determined if gender influences honest reporting. The results suggest that there was no significant difference in honesty amongst children who were assigned to HP condition compared to the children randomly assigned to the CG. Participants confessed to peeking at similar rates across conditions. Gender differences in honest reporting were also not detected. This study's results help us understand the effects of different consequences on children's decision-making with honesty. These results suggest that other factors might play a more substantial role in fostering honest behavior in children.
Eddy current damping of a moving domain wall: beyond the quasistatic approximation
Creators: name: Colaiori, Francesca
name: Durin, Gianfranco
name: Zapperi, Stefano
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In conducting ferromagnetic materials, a moving domain wall induces eddy currents in the sample which give rise to an effective retarding pressure on the domain wall. We show here that the pressure is not just proportional to the instantaneous velocity of the wall, as often assumed in domain wall models, but depends on the history of the motion. We calculate the retarding pressure by solving the Maxwell equations for the field generated by the eddy currents, and show how its effect can be accounted for by associating a negative effective mass to the magnetic wall. We analyze the dependence of this effect on the sample geometry and discuss the implications for Barkhausen noise measurements.
description: 9 pages, 4 figures, submitted to Phys. Rev. B
Comparative study of Hermitian and non-Hermitian topological dielectric photonic crystals
Creators: name: Chen, Menglin L. N.
name: Jiang, Li Jun
name: Zhang, Shuang
name: Zhao, Ran
name: Lan, Zhihao
name: Sha, Wei E. I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The effects of gain and loss on the band structures of a bulk topological dielectric photonic crystal (PC) with $C_{6v}$ symmetry and the PC-air-PC interface are studied based on first-principle calculation. To illustrate the importance of parity-time (PT) symmetry, three systems are considered, namely the PT-symmetric, PT-asymmetric, and lossy systems. We find that the system with gain and loss distributed in a PT symmetric manner exhibits a phase transition from a PT exact phase to a PT broken phase as the strength of the gain and loss increases, while for the PT-asymmetric and lossy systems, no such phase transition occurs. Furthermore, based on the Wilson loop calculation, the topology of the PT-symmetric system in the PT exact phase is demonstrated to keep unchanged as the Hermitian system. At last, different kinds of edge states in Hermitian systems under the influences of gain and loss are studied and we find that while the eigenfrequencies of nontrivial edge states become complex conjugate pairs, they keep real for the trivial defect states.
description: 6 pages, 6 figures
Additional file 1 of Cross cultural adaptation and psychometric properties of the Bengali version of the Scale of Oral Health Outcomes for 5-year-old children (SOHO-5)
Creators: name: Mishu, Masuma Pervin
name: Watt, Richard G.
name: Heilmann, Anja
name: Tsakos, Georgios
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1: Supplementary Table 1. Internal consistency of children’s SOHO-5 scores (self-reported): inter-item correlation matrix. Supplementary Table 2. Internal consistency of children’s SOHO-5 scores (parent reported): inter-item correlation matrix.
Emergent anomalies and generalized Luttinger theorems in metals and semimetals
Creators: name: Wang, Chong
name: Hickey, Alexander
name: Ying, Xuzhe
name: Burkov, A. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Luttinger's theorem connects a basic microscopic property of a given metallic crystalline material, the number of electrons per unit cell, to the volume, enclosed by its Fermi surface, which defines its low-energy observable properties. Such statements are valuable since, in general, deducing a low-energy description from microscopics, which may perhaps be regarded as the main problem of condensed matter theory, is far from easy. In this paper we present a unified framework, which allows one to discuss Luttinger theorems for ordinary metals, as well as closely analogous exact statements for topological (semi)metals, whose low-energy description contains either discrete point or continuous line nodes. This framework is based on the 't Hooft anomaly of the emergent charge conservation symmetry at each point on the Fermi surface, a concept recently proposed by Else, Thorngren and Senthil [Phys. Rev. X 11, 021005 (2021)]. We find that the Fermi surface codimension $p$ plays a crucial role for the emergent anomaly. For odd $p$, such as ordinary metals ($p=1$) and magnetic Weyl semimetals ($p=3$), the emergent symmetry has a generalized chiral anomaly. For even $p$, such as graphene and nodal line semimetals (both with $p=2$), the emergent symmetry has a generalized parity anomaly. When restricted to microscopic symmetries, such as $U(1)$ and lattice symmetries, the emergent anomalies imply (generalized) Luttinger theorems, relating Fermi surface volume to various topological responses. The corresponding topological responses are the charge density for $p=1$, Hall conductivity for $p=3$, and polarization for $p=2$. As a by-product of our results, we clarify exactly what is anomalous about the surface states of nodal line semimetals.
description: 10+ pages, 3 figures, published version
Additional file 1 of Posttraumatic stress disorder among adolescents in Brazil: a cross-sectional study
Creators: name: Avanci, Joviana Quintes
name: Serpeloni, Fernanda
name: Thiago Pires De Oliveira
name: Assis, Simone Gonçalves De
Publisher: name: figshare
Year: 2021
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1. About the question used for evaluation of information for sexual violence: Does your relationship with your parents involve any kind of sexual experience? () yes () no.
A Spectral Approach for Quasinormal Frequencies of Noncommutative Geometry-inspired Wormholes
Creators: name: Batic, Davide
name: Dutykh, Denys
name: Beek, Joudy Jamal
Publisher: name: arXiv
Year: 2025
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a detailed investigation of quasinormal modes (QNMs) for noncommutative geometry-inspired wormholes, focusing on scalar, electromagnetic, and vector-type gravitational perturbations. By employing the spectral method, the perturbation equations are reformulated into an eigenvalue problem over a compact domain, using Chebyshev polynomials to ensure high precision and fast numerical convergence. Our results reveal the absence of overdamped modes, with all detected QNMs exhibiting oscillatory behaviour. Additionally, for large values of the rescaled mass parameter, the QNMs of the noncommutative wormhole transition smoothly to those of the classical Schwarzschild wormhole, validating the accuracy of the spectral method. This work represents the first comprehensive exploration of QNMs in noncommutative geometry-inspired wormholes, shedding light on their stability and dynamical properties.
description: 20 pages, 1 figure, XIII tables
Long's Equation in Terrain Following Coordinates
Creators: name: Humi, Mayer
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geophysics (physics.geo-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Long's equation describes two dimensional stratified atmospheric flow over terrain which is represented by the geometry of the domain. The solutions of this equation over simple topography were investigated analytically and numerically by many authors. In this paper we derive a new terrain following formulation of this equation which incorporates the terrain as part of the differential equation rather than the geometry of the domain. This leads to new analytic insights about the solutions of this equation and enable us to compute steady state gravity wave patterns over complex topography.
description: 25pages, 3figures. Revised the section on numerical simulations and replaced all figures
New AdS$_2$ supergravity duals of 4d SCFTs with defects
Creators: name: Lozano, Yolanda
name: Petri, Nicolò
name: Risco, Cristian
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct new families of $\text{AdS}_2 \times S^2 \times S^2$ solutions with 4 supercharges in Type II supergravities. We show that subclasses of these solutions can be interpreted in terms of defect branes embedded in 4d $\mathcal{N} = 4 $ SYM, or orbifolds thereof. This is explicitly realised by showing that the solutions asymptote locally to $\text{AdS}_5 \times S^5/\mathbb{Z}_n$, in Type IIB, or its T-dual background, in Type IIA. The latter is a Gaiotto-Maldacena geometry realised on an intersection of D4 and NS5 branes. We extend the Type IIA solutions to include D6 branes, and interpret them as describing backreacted baryon vertices within 4d $\mathcal{N} = 2$ CFTs living in D4-NS5-D6 intersections. We propose explicit quiver quantum mechanics in which the defect branes play the role of colour branes, with the D4 branes of the D4-NS5-D6 intersection becoming flavour branes. These quivers are used to compute the degeneracies of the ground states of the dual super conformal quantum mechanics, that are shown to agree with the holographic expressions.
description: 40 pages, 3 figures
Assemblage variation associated with Southwestern Interior Plateau microblade technology
Creators: name: Ludowicz, Deanna
Publisher: name: University of British Columbia
Year: 2010

description: This thesis examines the relationship between prehistoric technological organization and settlement variability associated with the prepared core and microblade technology of the southwestern Interior Plateau, British Columbia. The study addresses methodological issues concerning the interpretation of settlement function from lithic assemblages and has substantive implications for the prehistory of the study area. The extant literature regarding northwestern North American microblade traditions is also reviewed. Intraregional variation is examined between lithic assemblages from Hat Creek valley and Lochnore-Nesikep locality. Previously constructed historical sequences suggeste that these assemblages are representatives of the Early Period of the Nesikep Tradition and may date between 7,000 and 2,900 B.P. Microblades and microcores of the Plateau Microblade tradition have been interpreted as diagnostic of the Early Period. Initially, patterns of settlement variation are inferred from a review of local environment factors, local aboriginal settlement and subsistence practices, and a general model of hunter-gatherer settlement strategies. The extant literature concerning archaeological depositional patterns resulting from technological organization is also reviewed. A lithic artifact classification that is assumed to correlate with technological roles is devised and tool deposition patterns associated with settlement are suggested. Microblade attributes that represent reduction variability are also described. Technological variability is examined first between assemblages representative of upland (Hat Creek"valley) and riverine (Lochnore-Nesikep locality) ecological zones through discriminant analyses. The analyses successfully sort assemblages into their respective zones and technological strategies can be interpreted as correlating with environmental location. Technological variability is also examined among assemblages as a means of interpreting settlement function. Q-mode cluster analysis is utilized to group together similar assemblages. Three groupings are devised, and these can be interpreted in terms of residential and non-residential activities. Further patterns of assemblage variation are defined from metric multidimensional scaling analysis. In conclusion, the technological organization responsible for the deposition of these assemblages is interpreted to have involved spatial separation of microcore and microblade production and use. The study also interprets the settlement strategy associated with this technology to have been logistically oriented.
On homogenization of space-time dependent and degenerate random flows II
Creators: name: Rhodes, Rémi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We study the long time behavior (homogenization) of a diffusion in random medium with time and space dependent coefficients. The diffusion coefficient may degenerate. In Stochastic Process. Appl. (2007) (to appear), an invariance principle is proved for the critical rescaling of the diffusion. Here, we generalize this approach to diffusions whose space-time scaling differs from the critical one.
description: Published in at http://dx.doi.org/10.1214/07-AIHP135 the Annales de l'Institut Henri Poincar\'e - Probabilit\'es et Statistiques (http://www.imstat.org/aihp/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Additional file 2 of Cross cultural adaptation and psychometric properties of the Bengali version of the Scale of Oral Health Outcomes for 5-year-old children (SOHO-5)
Creators: name: Mishu, Masuma Pervin
name: Watt, Richard G.
name: Heilmann, Anja
name: Tsakos, Georgios
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 2. Bengali version of SOHO-5 child questionnaire and parental proxy questionnaire.
Heating Hot Atmospheres with Active Galactic Nuclei
Creators: name: McNamara, B. R.
name: Nulsen, P. E. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: High resolution X-ray spectroscopy of the hot gas in galaxy clusters has shown that the gas is not cooling to low temperatures at the predicted rates of hundreds to thousands of solar masses per year. X-ray images have revealed giant cavities and shock fronts in the hot gas that provide a direct and relatively reliable means of measuring the energy injected into hot atmospheres by active galactic nuclei (AGN). Average radio jet powers are near those required to offset radiative losses and to suppress cooling in isolated giant elliptical galaxies, and in larger systems up to the richest galaxy clusters. This coincidence suggests that heating and cooling are coupled by feedback, which suppresses star formation and the growth of luminous galaxies. How jet energy is converted to heat and the degree to which other heating mechanisms are contributing, eg. thermal conduction, are not well understood. Outburst energies require substantial late growth of supermassive black holes. Unless all of the approximately 10E62 erg required to suppress star formation is deposited in the cooling regions of clusters, AGN outbursts must alter large-scale properties of the intracluster medium.
description: 60 pages, 12 figures, to appear in 1997 Annual Reviews of Astronomy and Astrophysics. This version supersedes the April 2007 version in Reviews in Advance (references and minor corrections were added), and is similar to the one scheduled to appear in Volume 45 of ARAA
Mapping Military Roles in COVID-19 Responses in Latin America – Contours, Causes and Consequences
Creators: name: Macias Herrera, Ariam
name: Croissant, Aurel
Publisher: name: HCIAS Working Papers on Ibero-America
Year: 2022

description: This is an explorative analysis of military roles in COVID-19 government responses in Latin America. We conceptualize the military’s involvement along fifteen categories of COVID-19 related roles and missions. Based on this conceptualization we assess the extent of military engagement in containing the disease in 17 countries. Our descriptive findings and cases studies of Brazil, El Salvador, and Uruguay also provide some hints at possible drivers of militarized COVID-19 governance and its short-term impact on democratic governance. We found that the pandemic accelerated military participation in governance. However, the military usually acted on the initiative and according to the directives of civilian leaders. We find that military COVID-19 activities are less likely to cause damage to democratic civil-military relations, if they are limited to policy implementation and exclude enforcing punitive COVID-19 measures in the realm public security.
description: HCIAS Working Papers on Ibero-America, HCIAS Working Papers on Ibero-America, Volume I (2022)
Deformation of Lambda hypernuclei
Creators: name: Win, Myaing Thi
name: Hagino, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We study the deformation property of $Λ$ hypernuclei using the relativistic mean field (RMF) method. We find that $^{29}_Λ$Si and $^{13}_Λ$C hypernuclei have spherical shape as a consequence of the additional $Λ$ particle, whereas the corresponding core nuclei, $^{28}$Si and $^{12}$C, are oblately deformed. Most of other hypernuclei have a similar deformation parameter to the core nucleus, in accordance with the previous study with the non-relativistic Skyrme-Hartree-Fock method. We discuss the sensitivity of our results to the choice of pairing interaction and to the parameter set of the RMF Lagrangian.
description: 5 pages, 6 eps figures
TESS Experiments: Reframing Women’s Issues: How Intersectional Identity Frames affect Women’s Political Attitudes
Creators: name: Brower, Margaret
Publisher: name: Roper Center for Public Opinion Research
Year: 2023

description: Time-sharing Experiments for the Social Sciences (TESS) offers researchers the opportunity to capture the internal validity of experiments. Investigators submit proposals, and TESS fields successful proposals for free on a representative sample of adults in the United States. This experiment was conducted to examine the effects of different policy frames on women’s attitudes towards gender-related issues. Respondents were randomly assigned to be presented with one of ten policy agendas from a women’s organization proposing legislative action to address either sexual harassment or the gender wage gap. Each issue topic included a control and four treatments which varied the race/ethnicity and socio-economic class of the population referenced in the policy agenda. A total of 1,030 female respondents participated. Respondents were asked to rate their support for the policy agenda and impacts of the policy agenda on White women and women of color, as well as indicate how they would allocate a budget of $300.00 across the women’s organization responsible for the policy agenda and four other non-profits. Respondents also indicated activities they would take part in to address the issue. This allowed for comparison of respondent support and buy-in across the treatments relative to control conditions.
Orbital analogue of quantum anomalous Hall effect in $p$-band systems
Creators: name: Wu, Congjun
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the topological insulating states of the $p$-band systems in optical lattices induced by the onsite orbital angular momentum polarization, which exhibit gapless edge modes in the absence of Landau levels. This effect arises from the energy level splitting between the onsite $p_x+ip_y$ and $p_x-ip_y$ orbitals by rotating each optical lattice site around its own center. At large rotation angular velocities, this model naturally reduces to two copies of Haldane's quantum Hall model without Landau levels. The distribution of Berry curvature in the momentum space and the quantized Chern numbers are calculated. The experimental realization is also discussed.
Rossby numbers and stiffness values inferred from gravity-mode asteroseismology of rotating F- and B-type dwarfs: consequences for mixing, transport, magnetism, and convective penetration
Creators: name: Aerts, C.
name: Augustson, K.
name: Mathis, S.
name: Pedersen, M. G.
name: Mombarg, J. S. G.
name: Vanlaer, V.
name: Van Beeck, J.
name: Van Reeth, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Multi-dimensional (magneto-)hydrodynamical simulations of physical processes in stellar interiors depend on a multitude of uncalibrated free parameters, which set the spatial and time scales of their computations. We aim to provide an asteroseismic calibration of the wave and convective Rossby numbers, and of the stiffness at the interface between the convective core and radiative envelope of intermediate-mass stars. We deduce these quantities for rotating dwarfs from the observed properties of their identified gravity and gravito-inertial modes. We rely on near-core rotation rates and asteroseismic models of 26 B- and 37 F-type dwarf pulsators derived from 4-year Kepler space photometry, high-resolution spectroscopy and Gaia astrometry in the literature to deduce their convective and wave Rossby numbers. We compute the stiffness at the convection/radiation interface from the inferred maximum buoyancy frequency at the interface and the convective turnover frequency in the core. We use those asteroseismically inferred quantities to make predictions of convective penetration levels, local flux levels of gravito-inertial waves triggered by the convective core, and of the cores' potential rotational and magnetic states. Our sample of 63 gravito-inertial mode pulsators covers near-core rotation rates from almost zero up to the critical rate. The frequencies of their identified modes lead to models with stiffness values between $10^{2.69}$ and $10^{3.60}$ for the B-type pulsators, while those of F-type stars cover the range from $10^{3.47}$ to $10^{4.52}$. The convective Rossby numbers derived from the maximum convective diffusion coefficient in the convective core, based on mixing length theory and a value of the mixing length coefficient relevant for these pulsators, vary between $10^{-2.3}$ and $10^{-0.8}$ for B-type stars and $10^{-3}$ and $10^{-1.5}$ for F-type stars. (abridged)
description: 10 pages, 8 figures, accepted for publication in Astronomy & Astrophysics, version adapted to proofs
Fluctuating Stripes in Strongly Correlated Electron Systems and the Nematic-Smectic Quantum Phase Transition
Creators: name: Sun, Kai
name: Fregoso, Benjamin M.
name: Lawler, Michael J.
name: Fradkin, Eduardo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We discuss the quantum phase transition between a quantum nematic metallic state to an electron metallic smectic state in terms of an order-parameter theory coupled to fermionic quasiparticles. Both commensurate and incommensurate smectic (or stripe) cases are studied. Close to the quantum critical point (QCP), the spectrum of fluctuations of the nematic phase has low-energy ``fluctuating stripes''. We study the quantum critical behavior and find evidence that, contrary to the classical case, the gauge-type of coupling between the nematic and smectic is irrelevant at this QCP. The collective modes of the electron smectic (or stripe) phase are also investigated. The effects of the low-energy bosonic modes on the fermionic quasiparticles are studied perturbatively, for both a model with full rotational symmetry and for a system with an underlying lattice, which has a discrete point group symmetry. We find that at the nematic-smectic critical point, due to the critical smectic fluctuations, the dynamics of the fermionic quasiparticles near several points on the Fermi surface, around which it is reconstructed, are not governed by a Landau Fermi liquid theory. On the other hand, the quasiparticles in the smectic phase exhibit Fermi liquid behavior. We also present a detailed analysis of the dynamical susceptibilities in the electron nematic phase close to this QCP (the fluctuating stripe regime) and in the electronic smectic phase.
description: 34 pages, 5 figure. An error in the calculation of fermion self-energy correction in the smectic phase was corrected, with updated Eq. (7.5) and Eq. (E3) and Table I
Quantized vortices in $^{\bf 4}$He droplets: a quantum Monte Carlo study
Creators: name: Sola, E.
name: Casulleras, J.
name: Boronat, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We present a diffusion Monte Carlo study of a vortex line excitation attached to the center of a $^4$He droplet at zero temperature. The vortex energy is estimated for droplets of increasing number of atoms, from N=70 up to 300 showing a monotonous increase with $N$. The evolution of the core radius and its associated energy, the core energy, is also studied as a function of $N$. The core radius is $\sim 1$ Åin the center and increases when approaching the droplet surface; the core energy per unit volume stabilizes at a value 2.8 K$σ^{-3}$ ($σ=2.556$ Å) for $N \ge 200$.
description: 4 pages, 3 figures
The AMS-RICH velocity and charge reconstruction
Creators: name: Barao, F.
name: Aguilar-Benitez, M.
name: Arruda, L.
name: Baret, B.
name: Barrau, A.
name: Barreira, G.
name: Belmont, E.
name: Berdugo, J.
name: Borges, J.
name: Buenerd, M.
name: Casadei, D.
name: Casaus, J.
name: Cortina, E.
name: Costado, M.
name: Crespo, D.
name: Delgado, C.
name: Diaz, C.
name: Derome, L.
name: Goncalves, P.
name: Garcia-Lopez, R.
name: de la Guia, C.
name: Herrero, A.
name: Lanciotti, E.
name: Laurenti, G.
name: Malinin, A.
name: Mana, C.
name: Marin, J.
name: Mangin-Brinet, M.
name: Martinez, G.
name: Menchaca-Rocha, A.
name: Palomares, C.
name: Pereira, R.
name: Pimenta, M.
name: Putze, A.
name: Sallaz-Damaz, Y.
name: Seo, E. S.
name: Sevilla, I.
name: Torrento, A.
name: Vargas-Trevino, M.
name: Veziant, O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The AMS detector, to be installed on the International Space Station, includes a Ring Imaging Cerenkov detector with two different radiators, silica aerogel (n=1.05) and sodium fluoride (n=1.334). This detector is designed to provide very precise measurements of velocity and electric charge in a wide range of cosmic nuclei energies and atomic numbers. The detector geometry, in particular the presence of a reflector for acceptance purposes, leads to complex Cerenkov patterns detected in a pixelized photomultiplier matrix. The results of different reconstruction methods applied to test beam data as well as to simulated samples are presented. To ensure nominal performances throughout the flight, several detector parameters have to be carefully monitored. The algorithms developed to fulfill these requirements are presented. The velocity and charge measurements provided by the RICH detector endow the AMS spectrometer with precise particle identification capabilities in a wide energy range. The expected performances on light isotope separation are discussed.
description: Contribution to the ICRC07, Merida, Mexico (2007); Presenter: F. Barao