cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ไทย กับ การก่อตั้ง ACMECS : ทฤษฎีรัฐที่อาจเป็นผู้นำภูมิภาค
Creators: name: ภูวิน บุณยะเวชชีวิน: กตมน เทพสีดา
Publisher: name: Center for Research on Plurality in the Mekong Region (CERP)
Year: 2015
Subjects: ACMECS, Thailand, Potential Regional Leader Theory, regionalism

description: 3, 11, Journal of Mekong Societies
Strong interaction and bound states in the deconfinement phase of QCD
Creators: name: Simonov, Yu. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent striking lattice results on strong interaction and bound states above T_c can be explained by the nonperturbative Q\bar Q potential, predicted more than a decade ago in the framework of the field correlator method. Explicit expressions and quantitative estimates are given for Polyakov loop correlators in comparison with lattice data. New theoretical predictions for glueballs and baryons above T_c are given.
description: 18 pages, 2 figures; new discussions, appendix and two figures added. To appear in Phys.Lett.B
An extensible lattice Boltzmann method for viscoelastic flows: complex and moving boundaries in Oldroyd-B fluids
Creators: name: Kuron, Michael
name: Stewart, Cameron
name: de Graaf, Joost
name: Holm, Christian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Most biological fluids are viscoelastic, meaning that they have elastic properties in addition to the dissipative properties found in Newtonian fluids. Computational models can help us understand viscoelastic flow, but are often limited in how they deal with complex flow geometries and suspended particles. Here, we present a lattice Boltzmann solver for Oldroyd-B fluids that can handle arbitrarily-shaped fixed and moving boundary conditions, which makes it ideally suited for the simulation of confined colloidal suspensions. We validate our method using several standard rheological setups, and additionally study a single sedimenting colloid, also finding good agreement with literature. Our approach can readily be extended to constitutive equations other than Oldroyd-B. This flexibility and the handling of complex boundaries holds promise for the study of microswimmers in viscoelastic fluids.
description: 13 pages, 11 figures
Nursing regulation literature in Canada: A scoping review
Creators: name: Leslie, Kathleen
name: Chiu, Patrick
name: Kung, Janice
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Medicine and Health Sciences
subject: Nursing
subject: FOS: Health sciences
subject: Canada
subject: health practitioner regulation
subject: nursing
subject: nursing regulation
subject: professional regulation

description: Significant health practitioner regulation reforms are occurring across Canada. Specifically, the growing nursing workforce challenges and health system demands have accelerated the pace of changes to nursing regulation policies and practices. With growing political interest and investment to modernize nursing regulation across Canada, evidence is needed to guide regulatory decision-making. A first step is to better understand the current state of scholarship and the knowledge gaps that exist.

In accordance with the Joanna Briggs Institute (JBI) guidelines for scoping reviews, we will examine the nature, extent, and range of literature focused on nursing regulation in Canada. A comprehensive search strategy will be supported by an experienced health sciences librarian. Relevant records will be retrieved by systematically searching electronic library databases. Grey literature will be searched using the websites of Canadian nursing organizations and leading Canadian regulatory organizations. No limitations will be placed on year of publication. The review will include papers that explore nursing regulation in Canada, including topics such as education program accreditation or approval, licensure, standards of practice and code of conduct/ethics development and enforcement, continuing competence, discipline and conduct, nursing regulatory models, governance, and reform. Two reviewers will independently screen titles and abstracts followed by full text. Data will be extracted using a pre-developed data extraction form and analyzed using descriptive statistics and conventional content analysis.

Results will be presented using evidence tables and a narrative summary. Reporting will follow the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews (PRISMA-ScR). Findings will inform the development of a research agenda focused on nursing regulation to inform regulatory decision-making in Canada.
Tauberian theorems for statistical Cesàro and statistical logarithmic summability of sequences in intuitionistic fuzzy normed spaces
Creators: name: Yavuz, Enes
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics

description: We define statistical Cesàro and statistical logarithmic summability methods of sequences in intuitionistic fuzzy normed spaces($IFNS$) and give slowly oscillating type and Hardy type Tauberian conditions under which statistical Cesàro summability and statistical logarithmic summability imply convergence in $IFNS$. Besides, we obtain analogous results for the higher order summability methods as corollaries. Also, two theorems concerning the convergence of statically convergent sequences in $IFNS$ are proved in the paper.
description: publication information is added, final version
Text: Fiesta de la Chonta
Creators: name: Umenda, Bautista
name: Dabkowski, Maksymilian
name: Quenamá, Leidy
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: con

description: The Feast of the Palm Shoot (la Fiesta de la Chonta), a traditional Cofán ceremony during which one drinks chicha.
Polarization Singularities in Light Scattering by Small Particles
Creators: name: Peng, Jie
name: Liu, Wei
name: Wang, Shubo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Using full-wave numerical simulations and analytical multipole expansions we investigated the properties of real-space polarization singularities that emerge in light scattering by subwavelength particles. We considered spherical and torus particles made of dielectric or perfect-electric-conductor material. We determined the topological indices and the trajectories of electric-field polarization singularities in both the near-field and far-field regions. In the far-field region, a total of four singularities are identified and the sum of their polarization topological indices is two, independent of the particle's geometric shape. In the near-field region, the polarization singularities strongly depend on the particle's shape and the polarization of incident light, and their index sum is not governed by the Poincaré-Hopf theorem anymore due to the non-transverse nature of the fields. From near field to far field, a flipping of sign can happen to the polarization topological indices of the C lines. The far-field properties of the singularities can be well explained by the interference of the excited multipoles, but their near-field properties can be strongly affected by the evanescent fields that are not captured by the multipole expansions. Our work uncovers the important relationship between particles' geometric properties and the polarization singularities of their scattering field. The results can be applied to manipulate polarization singularities in nanophotonic systems and could generate novel applications in optical sensing.
Do Saber ao Criar: experiências tecnoromanas na Villa de Milreu
Creators: name: Colaço, Ana
name: Brigas, Amadeu
name: Pereira, Angelina
name: Silva, Ana Paula
name: Miguel, Carlos
name: Garcia, Cristina
name: Veigas-Pires, Cristina
name: Moura, Delminda
name: Reis, Emanuel
name: Dias, Filipe
name: Vargues, Filipa
name: Gonçalves, Luis
name: Santos, Marco António
name: Francisco, Maria Luisa
name: Fernandes, Paulo
name: Canas, Ricardo
name: Romba, Sandra
name: Azambuja, Sónia Talhé
name: Martins, Susana Calado
Publisher: name: Zenodo
Year: 2018
Subjects: DiVaM
Milreu
STEAM

description: O programa DiVaM pretende contribuir para destacar a importância das comunidades locais na valorização do património cultural, indo ao encontro dos princípios da “Convenção de Faro”, pois tenta promover o património cultural como factor de aproximação, de diálogo, de coesão social e de uma cidadania cada vez mais inclusiva. O Centro Ciência Viva do Algarve, no âmbito deste programa, levou “experiências” às ruínas de Milreu pelo quarto ano consecutivo, tendo-se considerado imperativo dedicar pela primeira vez um dia inteiro ao público escolar. A presente comunicação visa dar a conhecer as atividades desenvolvidas.
Impact of binary interactions on the diffuse supernova neutrino background
Creators: name: Horiuchi, Shunsaku
name: Kinugawa, Tomoya
name: Takiwaki, Tomoya
name: Takahashi, Koh
name: Kotake, Kei
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Binary interactions, especially mass transfer and mergers, can strongly influence the evolution of massive stars and change their final properties and the occurrence of supernovae. Here, we investigate how binary interactions affect predictions of the diffuse flux of neutrinos. By performing stellar population syntheses including prescriptions for binary interactions, we show that the resulting detection rates of the diffuse supernova neutrino background is enhanced by 15%-20% compared to estimates without binary considerations. A source of significant uncertainty arises due to the presently sparse knowledge of the evolution of rapidly rotating carbon-oxygen cores, especially those created as a result of mergers near the white dwarf to core collapse boundary. The enhancement effect may be as small as a few percent if the effects of rotation in postmerger systems are neglected, or as large as 75% if trends are extrapolated. Our estimates serve to highlight that binary effects can be important.
description: 12 pages, 8 figures, matches published version
The ACS Virgo Cluster Survey X. Half-light Radii of Globular Clusters in Early-Type Galaxies: Environmental Dependencies and a Standard Ruler for Distance Estimation
Creators: name: Jordan, Andres
name: Cote, Patrick
name: Blakeslee, John P.
name: Ferrarese, Laura
name: McLaughlin, Dean E.
name: Mei, Simona
name: Peng, Eric W.
name: Tonry, John L.
name: Merritt, David
name: Milosavljevic, Milos
name: Sarazin, Craig L.
name: Sivakoff, Gregory R.
name: West, Michael J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have measured half-light radii, r_h, for globular clusters (GCs) belonging to the 100 early-type galaxies observed in the ACS Virgo Cluster Survey and the elliptical galaxy NGC 4697. An analysis of the dependencies of the measured r_h on both the properties of the GCs themselves and their host galaxies reveals that the average r_h increases with increasing galactocentric distance or, alternatively, with decreasing galaxy surface brightness. For the first time, we find that the average r_h decreases with the host galaxy color. We also show that there is no evidence for a variation of r_h with the luminosity of the GCs. Finally, we find in agreement with previous observations that the average r_h depends on the color of GCs, with red GCs being ~17% smaller than their blue counterparts. We show that this difference is probably a consequence of an intrinsic mechanism, rather than projection effects, and that it is in good agreement with the mechanism proposed in Jordan (2004). We discuss these findings in light of two simple pictures for the origin of the r_h of GCs and show that both lead to a behavior in rough agreement with the observations. After accounting for the dependencies found we show that the average GC half-light radii can be successfully used as a standard ruler for distance estimation. We outline the methodology, and provide a calibration for its use. We find = 2.7 +- 0.35 pc for GCs with (g-z)=1.2 mag in a galaxy with color (g-z)_{gal}=1.5 mag and at an underlying surface z-band brightness of mu_z = 21 mag arcsec^{-2}. Using this technique, we place an upper limit of 3.4 Mpc on the 1-sigma line-of-sight depth of the Virgo Cluster. Finally, we examine the form of the r_h distribution for our sample galaxies and provide an analytic expression which successfully describes this distribution. (Abridged)
description: 18 pages, 13 figures. Accepted for publication in ApJ. Also available at http://www.physics.rutgers.edu/~pcote/acs/publications.html
On the Slightly Perturbed De Gregorio Model on $S^1$
Creators: name: Chen, Jiajie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: It is conjectured that the generalization of the Constantin-Lax-Majda model (gCLM) $ω_t + a uω_x = u_x ω$ due to Okamoto, Sakajo and Wunsch can develop a finite time singularity from smooth initial data for $a < 1$. For the endpoint case where $a$ is close to and less than $1$, we prove finite time asymptotically self-similar blowup of gCLM on a circle from a class of smooth initial data. For the gCLM on a circle with the same initial data, if the strength of advection $a$ is slightly larger than $1$, we prove that the solution exists globally with $|| ω(t)||_{H^1}$ decaying in a rate of $O(t^{-1})$ for large time. The transition threshold between two different behaviors is $a=1$, which corresponds to the De Gregorio model.
description: 19 pages. Added discussions in the introduction
ALMA CN Zeeman Observations of AS 209: Limits on Magnetic Field Strength and Magnetically Driven Accretion Rate
Creators: name: Harrison, Rachel E.
name: Looney, Leslie W.
name: Stephens, Ian W.
name: Li, Zhi-Yun
name: Teague, Richard
name: Crutcher, Richard M.
name: Yang, Haifeng
name: Cox, Erin
name: Fernández-López, Manuel
name: Shinnaga, Hiroko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: While magnetic fields likely play an important role in driving the evolution of protoplanetary disks through angular momentum transport, observational evidence of magnetic fields has only been found in a small number of disks. Although dust continuum linear polarization has been detected in an increasing number of disks, its pattern is more consistent with that from dust scattering than from magnetically aligned grains in the vast majority of cases. Continuum linear polarization from dust grains aligned to a magnetic field can reveal information about the magnetic field's direction, but not its strength. On the other hand, observations of circular polarization in molecular lines produced by Zeeman splitting offer a direct measure of the line-of-sight magnetic field strength in disks. We present upper limits on the net toroidal and vertical magnetic field strengths in the protoplanetary disk AS 209 derived from Zeeman splitting observations of the CN 2-1 line. The 3$σ$ upper limit on the net line-of-sight magnetic field strength in AS 209 is 5.0 mG on the redshifted side of the disk and 4.2 mG on the blueshifted side of the disk. Given the disk's inclination angle, we set a 3$σ$ upper limit on the net toroidal magnetic field strength of 8.7 and 7.3 mG for the red and blue sides of the disk, respectively, and 6.2 and 5.2 mG on the net vertical magnetic field on the red and blue sides of the disk. If magnetic disk winds are a significant mechanism of angular momentum transport in the disk, magnetic fields of a strength close to the upper limits would be sufficient to drive accretion at the rate previously inferred for regions near the protostar.
description: June 22, 2021: Corrected disk size scale bar in Figures 1, 2 and 5. Corrected percent polarization scale bar label in Figure 5
Approximate word matches between two random sequences
Creators: name: Burden, Conrad J.
name: Kantorovitz, Miriam R.
name: Wilson, Susan R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60F17, 92D20 (Primary)

description: Given two sequences over a finite alphabet $\mathcal{L}$, the $D_2$ statistic is the number of $m$-letter word matches between the two sequences. This statistic is used in bioinformatics for expressed sequence tag database searches. Here we study a generalization of the $D_2$ statistic in the context of DNA sequences, under the assumption of strand symmetric Bernoulli text. For $k
description: Published in at http://dx.doi.org/10.1214/07-AAP452 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Fundulus (Fundulus) Lacepede 1803
Creators: name: Hernández-Ávila, Sonia Gabriela
name: Hoagstrom, Christopher W.
name: Matamoros, Wilfredo A.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Cyprinodontiformes
Fundulidae
Fundulus

description: Subgenus Fundulus
First branching within subgenus Fundulus might reflect both ecological and geographical speciation. Fundulus majalis (Walbaum, 1792) – Fundulus persimilis Miller, 1955 – Fundulus similis (Baird & Girard, 1853) inhabit unvegetated coastal habitats where they dive into soft sediments for cover rather than retreating to vegetation like typical Fundulus (Martin & Finucane, 1968; Harvey, 1998; Miller et al. 2005). They are adapted for continuous swimming in the surf zone (Yetsko and Sancho 2015) and spawn in unvegetated habitats (Greeley et al. 1986). Fundulus majalis segregates from congeners in unvegetated, high-salinity waters (Weisberg 1986, Wagner and Austin 1999). We propose that this ecologically divergent lineage descends from an ancestor adapted for open, wave-swept coasts. Divergence 21.0–15.2 Mya (Fig. 3, node 16) was concurrent with sea-level rise that culminated in the MMCO (Table 2) and could have facilitated range expansion (Dolby et al. 2016, 2018). Given that coastlines adjacent to Early Miocene deltas were wave swept and sand dominated (Snedden and Galloway 2019), this could account for ecological specialization in this species group. In the earliest Middle Miocene (15.6 Mya), a new Guadalupe River delta emerged to the west (Fig. 8). Wave-dominated conditions there (Snedden and Galloway 2019) suggest that the MRCA of the F. similis species group evolved there.
description: Published as part of Hernández-Ávila, Sonia Gabriela, Hoagstrom, Christopher W. & Matamoros, Wilfredo A., 2024, Historical biogeography of North American killifishes (Cyprinodontiformes) recapitulates geographical history in the Gulf of México watershed in Zoological Journal of the Linnean Society 202 (2), DOI: 10.1093/zoolinnean/zlae105, http://zenodo.org/record/14508841
Thermodynamics of precision in quantum nano-machines
Creators: name: Rignon-Bret, Antoine
name: Guarnieri, Giacomo
name: Goold, John
name: Mitchison, Mark T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Fluctuations strongly affect the dynamics and functionality of nanoscale thermal machines. Recent developments in stochastic thermodynamics have shown that fluctuations in many far-from-equilibrium systems are constrained by the rate of entropy production via so-called thermodynamic uncertainty relations. These relations imply that increasing the reliability or precision of an engine's power output comes at a greater thermodynamic cost. Here we study the thermodynamics of precision for small thermal machines in the quantum regime. In particular, we derive exact relations between the power, power fluctuations, and entropy production rate for several models of few-qubit engines (both autonomous and cyclic) that perform work on a quantised load. Depending on the context, we find that quantum coherence can either help or hinder where power fluctuations are concerned. We discuss design principles for reducing such fluctuations in quantum nano-machines, and propose an autonomous three-qubit engine whose power output for a given entropy production is more reliable than would be allowed by any classical Markovian model.
description: v1: 12 pages, 6 figures. Comments welcome. v2: Updated references. v3: Improved presentation and updated references and figures
The DeLLight experiment to observe an optically-induced change of the vacuum index
Creators: name: Robertson, Scott
name: Mailliet, Aurélie
name: Sarazin, Xavier
name: Couchot, François
name: Baynard, Elsa
name: Demailly, Julien
name: Pittman, Moana
name: Djannati-Ataï, Arache
name: Kazamias, Sophie
name: Urban, Marcel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Quantum electrodynamics predicts that the vacuum must behave as a nonlinear optical medium: the speed of light should be modified when the vacuum is stressed by intense electromagnetic fields. This optical phenomenon has not yet been observed. The DeLLight (Deflection of Light by Light) experiment aims to observe the optically-induced index change of vacuum, a nonlinear effect which has never been explored. The experiment is installed in the LASERIX facility at IJCLab, which delivers ultra-short intense laser pulses (2.5 J per pulse, each of 30 fs duration, with a 10 Hz repetition rate). The proposal is to measure the refraction of a probe laser pulse when crossing a transverse vacuum index gradient, produced by a very intense pump pulse. The refraction induces a transverse shift in the intensity profile of the probe, whose signal is amplified by a Sagnac interferometer. In this article, we describe the experimental method and setup, and present the complete theoretical calculations for the expected signal. With a minimum waist at focus of $5 \,μ$m (corresponding to a maximum intensity of $\sim 3 \times 10^{20}$ W/cm$^2$), and with the nonlinear vacuum index derived from QED, the expected refraction angle is 0.13 prad. First results of the interferometer prototype are presented. It is shown that an extinction factor $\mathcal{F} = 0.4 \times 10^{-5}$ (corresponding to a signal amplification factor of 250) and a spatial resolution $σ_y = 10$ nm are achievable. The expected signal is then about 15 pm, and could be observed at a 5-sigma confidence level with about one month of collected data.
description: 23 pages, 14 figures Version accepted for publication in Phys. Rev. A
Damage evolution of hot-pressed boron carbide under confined dynamic compression
Creators: Farbaniec, L.
Hogan, James D.
Xie, K.Y.
Shaeffer, M.
Hemker, K.J.
Ramesh, K.T.
Publisher: name: University of Alberta Library
Year: 2017

The dynamic response of hot-pressed boron carbide was studied under uniaxial and confined loading conditions using a modified compression Kolsky bar setup at strain rates of 102 – 103 s–1. The progression of damage in the prismatic specimens was captured using a high-speed camera. This experimental approach was reproduced in a quasi-static regime (10–4 – 10–3 s–1) to study the rate dependance of the strengths and damage modes. The results showed that the compressive strength of boron carbide was both stress state and strain rate dependent. A real-time visualization showed a change in the crack path under confined compression loading. Our observations revealed the formation of column-like fragments and slabs in the uniaxial and confined compression, respectively. Collected fragments of the specimens were used to investigate failure mechanisms by SEM and TEM. Both observations showed transgranular fracture. It was found that microcracks originate at large carbon inclusions and have tensile character. TEM examinations also point to the absence of stress-induced damage at grain boundaries and inside boron carbide grains. The formation of microcracks was responsible for experimentally observed inelastic response under dynamic loading conditions.
title: Das Geisterspiel der Medien
title: Die Darstellung der Fans im Zuge der Proteste gegen Dietmar Hopp und den DFB in der Bundesliga 2019/20
titleType: Subtitle
Creators: name: Kaltbeitzer, Dennis Marc
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2020

description: Ende Februar 2020 erreicht der anhaltende Konflikt zwischen Fans, Vereinen und Verbänden der Bundesliga einen neuen Höhepunkt. Der Auslöser: die Wiedereinführung der Kollektivstrafe durch ein umstrittenes Urteil des DFB-Sportgerichts. Anschließend solidarisieren sich diverse Fangruppierungen, um auf die – aus ihrer Sicht – Missstände im System Profifußball aufmerksam zu machen. Wochenlang wird in renommierten Tageszeitungen, Fachzeitschriften und Fernsehprogrammen über den Konflikt berichtet. Auf Grundlage der Diskurstheorie Paul-Michel Foucaults untersucht diese Abschlussarbeit die mediale Darstellung von Fußballfans, um herauszufinden, welche Wirklichkeiten durch die Akteure des deutschen Sportjournalismus konstruiert werden. Hierfür wurden über drei Wochen hinweg 48 Beiträge der sportjournalistischen Leitmedien Süddeutsche Zeitung, Der Kicker, BILD, SportBILD, Frankfurter Allgemeine Zeitung, ARD und ZDF analysiert und das diskursive Regelsystem dechiffriert. Dabei zeigt sich nicht nur, dass sich gesellschaftliche Machtverhältnisse in der Sportberichterstattung widerspiegeln, sondern auch, dass der moderne Sportjournalismus Vereinen und Verbänden dazu verhilft, der geäußerten Systemkritik auszuweichen und diese umzuleiten. Seiner Kritik- und Kontrollfunktion wird der Sportjournalismus unter diesen Umständen kaum gerecht. Die Erfüllung der öffentlichen Aufgabe der Medien scheint gefährdet.
Neutron scattering study of the vibrations in vitreous silica and germania
Creators: name: Fabiani, E.
name: Fontana, A.
name: Buchenau, U.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The incoherent approximation for the determination of the vibrational density of states of glasses from inelastic neutron or x-ray scattering data is extended to treat the coherent scattering. The method is applied to new room temperature measurements of vitreous silica and germania on the thermal time-of-flight spectrometer IN4 at the High Flux Reactor in Grenoble. The inelastic dynamic structure factor at the boson peak turns out to be reasonably well described in terms of a mixture of rotation and translation of practically undistorted SiO4 or GeO4 tetrahedra. The translational component exceeds the expectation of the Debye model by a factor of two. A possible relation of this excess to the phonon shift and broadening observed in x-ray Brillouin scattering experiments is discussed.
description: 13 pages, 13 figures, 39 references
Multimagnetic Monopoles
Creators: name: Bazeia, D.
name: Liao, M. A.
name: Marques, M. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we investigate the presence of magnetic monopoles that engender multimagnetic structures, which arise from an appropriate extension of the $\rm{SU(2)}$ gauge group. The investigation is based on a modified relativistic theory that contain several gauge and matter fields, leading to a Bogomol'nyi bound and thus to a first order framework, from which stable multimagnetic solutions can be constructed. We illustrate our findings with several examples of stable magnetic monopoles with multimagnetic properties.
description: 10 pages, 16 figures; version to appear in EPJC
Multi-Attention-Network for Semantic Segmentation of Fine Resolution Remote Sensing Images
Creators: name: Li, Rui
name: Zheng, Shunyi
name: Duan, Chenxi
name: Zhang, Ce
name: Su, Jianlin
name: Atkinson, P. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Semantic segmentation of remote sensing images plays an important role in a wide range of applications including land resource management, biosphere monitoring and urban planning. Although the accuracy of semantic segmentation in remote sensing images has been increased significantly by deep convolutional neural networks, several limitations exist in standard models. First, for encoder-decoder architectures such as U-Net, the utilization of multi-scale features causes the underuse of information, where low-level features and high-level features are concatenated directly without any refinement. Second, long-range dependencies of feature maps are insufficiently explored, resulting in sub-optimal feature representations associated with each semantic class. Third, even though the dot-product attention mechanism has been introduced and utilized in semantic segmentation to model long-range dependencies, the large time and space demands of attention impede the actual usage of attention in application scenarios with large-scale input. This paper proposed a Multi-Attention-Network (MANet) to address these issues by extracting contextual dependencies through multiple efficient attention modules. A novel attention mechanism of kernel attention with linear complexity is proposed to alleviate the large computational demand in attention. Based on kernel attention and channel attention, we integrate local feature maps extracted by ResNeXt-101 with their corresponding global dependencies and reweight interdependent channel maps adaptively. Numerical experiments on three large-scale fine resolution remote sensing images captured by different satellite sensors demonstrate the superior performance of the proposed MANet, outperforming the DeepLab V3+, PSPNet, FastFCN, DANet, OCRNet, and other benchmark approaches.
description: arXiv admin note: substantial text overlap with arXiv:2007.14902
Mountains, rivers, billabongs : ethnogeographical categorization in cross-linguistic perspective
Creators: name: Bromhead, Helen
Publisher: name: The Australian National University
Year: 2014
Subjects: subject: Comparative linguistics
subject: Language and languages Variation
subject: Geographical perception
subject: Semantics, Comparative

description: This thesis examines the topic of ethnogeographical categorization by way of looking at the contrastive lexical semantics of a selection of landscape terms in a number of languages. The main languages in focus are English, including the Australian variety of English, French, Spanish, and the Australian Aboriginal language, Pitjantjatjara/Yankunytjatjara. The thesis argues that languages and cultures categorize the geographical environment in diverse ways. Common elements of classification are found across the selected languages, but it is argued that different priorities are given to these factors. Moreover, the thesis finds that there are language-specific aspects of the landscape terms, often motivated by culture and land use. Notably, this thesis presents ethnogeographical concepts as being anchored in an anthropocentric perspective, based on human vision and experience in space. The Natural Semantic Metalanguage (NSM) technique of semantic analysis is used throughout. The use of the universal concepts and language of NSM allows me to clearly state the cross-cultural and cross-linguistic similarities and differences in the semantics of the landscape terms examined. It is argued that this methodology provides an effective tool in the exploration of ethnogeographical categories. Areas of landscape vocabulary covered in this thesis include words for 'long flowing-water places', such as river, in chapter 3; words for 'standing-water places', such as lake, in chapter 4; words for 'elevated places', such as mountain, in chapter 5; seascape terms, such as coast, in chapter 6; and words for larger areas of the land, such as desert and the bush, in chapters 7 and 8. The thesis also offers suggestions new directions for research.
Ciência Viva num Centro Comercial: Uma experiência e um desafio
Creators: name: Veiga-Pires, Cristina
name: Miguel, Carlos
name: Ferreira, Clara
name: Carvalho, Cristina
name: Reis, Emanuel
name: Dias, Filipe
name: Oliveira, Jorge
name: Gonçalves, Luís
name: Quinteiro, Marco
name: Romão, Mónica
name: Gomes, Tiago
Publisher: name: Zenodo
Year: 2015

description: O Centro de Ciência Viva do Algarve respondeu ao desafio lançado pelo Centro Comercial do Fórum Algarve para dinamizar um espaço no Centro comercial durante dois meses e meio. O desafio lançado “Gui à Descoberta do Espaço” e “Gui à Descoberta da Ria Formosa” transformou-se numa nova experiência para a equipa do Centro de Ciência Viva do Algarve que teve, numa primeira fase, que preparar uma exposição com módulos interativos, paneis informativos, atividades livres e enquadradas em pouco mais de duas semanas. Numa segunda fase, a equipa deparou-se com a realidade de um centro comercial : número de pessoas visitantes, horários, espaço aberto, e sobretudo a falta de respeito pelo espaço. O número de visitantes no primeiro dia da exposição ultrapassou a centena, ou seja pouco menos de um sexto dos visitantes que o centro teve durante todo o último mês de janeiro. Os horários de presença da equipa de monitores no centro comercial representam doze horas de trabalho contínuo a vigiar, explicar, ajudar e animar o espaço. O próprio espaço disponibilizado pelo centro comercial consiste num espaço sem limites físicos incentivando as pessoas a penetrar no espaço sem haver uma orientação da visita ao espaço. Finalmente, no desenvolvimento dos módulos interativos, a equipa esqueceu-se de ter em consideração a conjugação da falta de respeito ou de educação dos visitantes com o seu elevado número, tendo desenvolvido módulo demasiado sensíveis/delicados que necessitaram reparações e adaptações logo após alguns dias de exposição. De acordo com estas constatações a segunda exposição sobre a Ria Formosa foi pensada de forma diferente. Finalmente, até à data da entrega do presente resumo, e após uma semana de exposição no Fórum Algarve, esta experiência já permitiu que o Centro de Ciência Viva do Algarve desenvolve-se atividades enquadradas com mais de 260 crianças e adultos, tendo já várias marcações de escolas e ATL para visitar o espaço. Resta a saber e contabilizar o retorno a médio e longo prazo que esta experiência e este desafio poderão ter sobre as entradas no espaço do Centro Ciência Viva do Algarve.
New Bag of Deep Visual Words based features to classify chest x-ray images for COVID-19 diagnosis
Creators: name: Sitaula, Chiranjibi
name: Aryal, Sunil
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Because the infection by Severe Acute Respiratory Syndrome Coronavirus 2 (COVID-19) causes the pneumonia-like effect in the lungs, the examination of chest x-rays can help to diagnose the diseases. For automatic analysis of images, they are represented in machines by a set of semantic features. Deep Learning (DL) models are widely used to extract features from images. General deep features may not be appropriate to represent chest x-rays as they have a few semantic regions. Though the Bag of Visual Words (BoVW) based features are shown to be more appropriate for x-ray type of images, existing BoVW features may not capture enough information to differentiate COVID-19 infection from other pneumonia-related infections. In this paper, we propose a new BoVW method over deep features, called Bag of Deep Visual Words (BoDVW), by removing the feature map normalization step and adding deep features normalization step on the raw feature maps. This helps to preserve the semantics of each feature map that may have important clues to differentiate COVID-19 from pneumonia. We evaluate the effectiveness of our proposed BoDVW features in chest x-rays classification using Support Vector Machine (SVM) to diagnose COVID-19. Our results on a publicly available COVID-19 x-ray dataset reveal that our features produce stable and prominent classification accuracy, particularly differentiating COVID-19 infection from other pneumonia, in shorter computation time compared to the state-of-the-art methods. Thus, our method could be a very useful tool for quick diagnosis of COVID-19 patients on a large scale.
description: Submitted to Health Information Science and Systems (Springer) for review
Towards a Jacquet-Langlands correspondence for unitary Shimura varieties
Creators: name: Helm, David
Publisher: name: arXiv
Year: 2005
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11G18; 11F55

description: Let G be a unitary group over a totally real field, and X a Shimura variety for G. For certain primes p of good reduction for X, we construct cycles on the characteristic p fiber of X. These cycles are defined as the loci on which the Verschiebung map has small rank on particular pieces of the Lie algebra of the universal abelian variety on X. The geometry of these cycles turns out to be closely related to Shimura varieties for a different unitary group G', which is isomorphic to G at finite places but not isomorphic to G at archimedean places. More precisely, each such cycle has a natural desingularization, and this desingularization is "almost" isomorphic to a scheme parametrizing certain subbundles of the Lie algebra of the universal abelian variety over a Shimura variety X' arising from G'. We exploit this relationship to construct an injection of the etale cohomology of X' into that of X. This yields a geometric construction of "Jacquet-Langlands transfers" of automorphic representations of G' to automorphic representations of G.
description: 30 pages: added references, corrected typos, revised introduction and formatting
Exactly solvable model of Fermi arcs and pseudogap
Creators: name: Yang, Kun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We introduce a very simple and exactly solvable model that supports Fermi arcs in its ground state and excitation spectrum. These arcs come in pairs, and merge into what we call a pseudo Fermi surface along which fermions are gapped; this fermion gap is naturally identified as a pseudogap. Comparison will be made with phenomenology of high temperature cuprate superconductors.
description: Published version
CP-Odd Phase Effects in a Left-Right Symmetric Chargino Sector
Creators: name: Frank, Mariana
name: Turan, Ismail
name: de Ona, Artorix dela Cruz
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The left-right supersymmetric model contains a right-handed gaugino, as well as several higgsinos, in addition to the minimal supersymmetric model. Thus several CP-noninvariant phases appear in this sector. We analyze their impact on chargino masses and find that only two combinations are physically relevant. We then study the production of charginos in e+e- annihilation and chargino decays into a sneutrino and a lepton, and investigate the effects of CP-phases. We also study the CP-odd asymmetry in the production and subsequent decay at the linear collider with longitudinally polarized beams and find a large enhancement when the decay channel to the right sneutrino is available. The effects of the phases in the left-right supersymmetric chargino sector are different from the minimal supersymmetric standard model, and signals from this sector would be able to distinguish between different gauge symmetries.
description: 24 pages, 11 figures, minor clarifications in the model part, to be published in Phys. Rev. D
Steady state entropy production rate for scalar Langevin field theories
Creators: name: Li, Yuting I.
name: Cates, Michael E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The entropy production rate (EPR) offers a quantitative measure of time reversal symmetry breaking in non-equilibrium systems. It can be defined either at particle level or at the level of coarse-grained fields such as density; the EPR for the latter quantifies the extent to which these coarse-grained fields behave irreversibly. In this work, we first develop a general method to compute the EPR of scalar Langevin field theories with additive noise. This large class of theories includes active versions of Model A (non-conserved density dynamics) and Model B (conserved) and also models where both types of dynamics are simultaneously present (such as Model AB). Treating the scalar field $ϕ$ (and its time derivative $\dotϕ$) as the sole observable(s), we arrive at an expression for the EPR that is non-negative for every field configuration and is quadratic in the time-antisymmetric component of the dynamics. Our general expression is a function of the quasipotential, which determines the full probability distribution for configurations, and is not generally calculable. To alleviate this difficulty, we present a small-noise expansion of the EPR, which only requires knowledge of the deterministic (mean-field) solution for the scalar field in steady state, which generally is calculable, at least numerically. We demonstrate this calculation for the case of Model AB. We then present a similar EPR calculation for Model AB with the conservative and non-conservative contributions to $\dotϕ= \dotϕ_{\rm A} + \dotϕ_{\rm B}$ viewed as separately observable quantities. The results are qualitatively different, confirming that the field-level EPR depends on the choice of coarse-grained information retained within the dynamical description.
description: 28 pages, 3 figures
Prospects of high temperature ferromagnetism in (Ga,Mn)As semiconductors
Creators: name: Jungwirth, T.
name: Wang, K. Y.
name: Masek, J.
name: Edmonds, K. W.
name: Konig, Jurgen
name: Sinova, Jairo
name: Polini, M.
name: Goncharuk, N. A.
name: MacDonald, A. H.
name: Sawicki, M.
name: Campion, R. P.
name: Zhao, L. X.
name: Foxon, C. T.
name: Gallagher, B. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on a comprehensive combined experimental and theoretical study of Curie temperature trends in (Ga,Mn)As ferromagnetic semiconductors. Broad agreement between theoretical expectations and measured data allows us to conclude that T_c in high-quality metallic samples increases linearly with the number of uncompensated local moments on Mn_Ga acceptors, with no sign of saturation. Room temperature ferromagnetism is expected for a 10% concentration of these local moments. Our magnetotransport and magnetization data are consistnent with the picture in which Mn impurities incorporated during growth at interstitial Mn_I positions act as double-donors and compensate neighboring Mn_Ga local moments because of strong near-neighbor Mn_Ga-Mn_I antiferromagnetic coupling. These defects can be efficiently removed by post-growth annealing. Our analysis suggests that there is no fundamental obstacle to substitutional Mn_Ga doping in high-quality materials beyond our current maximum level of 6.2%, although this achievement will require further advances in growth condition control. Modest charge compensation does not limit the maximum Curie temperature possible in ferromagnetic semiconductors based on (Ga,Mn)As.
description: 13 pages, 12 figures, submitted to Phys. Rev. B
Observation of enhanced fluctuation diamagnetism in lanthanum superconductors with dilute magnetic impurities
Creators: name: Soto, Felix
name: Cabo, Lucia
name: Mosqueira, Jesus
name: Ramallo, Manuel V.
name: Veira, Jose A.
name: Vidal, Felix
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The fluctuation-induced diamagnetism (FD), associated with the presence of precursor Cooper pairs in the normal state, has been measured in lanthanum with dilute magnetic (Pr) and nonmagnetic (Lu) impurities. It is found that while for pure La and La-Lu alloys the FD agrees, as expected, with the theoretical predictions, it is much larger for La-Pr alloys (around a factor 5 for La-2at.%Pr). These results suggest the existence of an indirect contribution to the FD arising from the interaction between fluctuating Cooper pairs and magnetic impurities.
description: 13 pages, including 2 figures and 1 table. LaTeX
Direct Observation of the Superfluid Phase Transition in Ultracold Fermi Gases
Creators: name: Zwierlein, Martin W.
name: Schunck, Christian H.
name: Schirotzek, Andre
name: Ketterle, Wolfgang
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Water freezes into ice, atomic spins spontaneously align in a magnet, liquid helium becomes superfluid: Phase transitions are dramatic phenomena. However, despite the drastic change in the system's behaviour, observing the transition can sometimes be subtle. The hallmark of Bose-Einstein condensation (BEC) and superfluidity in trapped, weakly interacting Bose gases is the sudden appearance of a dense central core inside a thermal cloud. In strongly interacting gases, such as the recently observed fermionic superfluids, this clear separation between the superfluid and the normal parts of the cloud is no longer given. Condensates of fermion pairs could be detected only using magnetic field sweeps into the weakly interacting regime. The quantitative description of these sweeps presents a major theoretical challenge. Here we demonstrate that the superfluid phase transition can be directly observed by sudden changes in the shape of the clouds, in complete analogy to the case of weakly interacting Bose gases. By preparing unequal mixtures of the two spin components involved in the pairing, we greatly enhance the contrast between the superfluid core and the normal component. Furthermore, the non-interacting wings of excess atoms serve as a direct and reliable thermometer. Even in the normal state, strong interactions significantly deform the density profile of the majority spin component. We show that it is these interactions which drive the normal-to-superfluid transition at the critical population imbalance of 70(5)%.
description: 16 pages (incl. Supplemental Material), 5 figures