cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The long-term enhanced brightness of the magnetar 1E 1547.0-5408
Creators: name: Zelati, Francesco Coti
name: Borghese, Alice
name: Rea, Nanda
name: Viganò, Daniele
name: Enoto, Teruaki
name: Esposito, Paolo
name: Pons, José A.
name: Campana, Sergio
name: Israel, Gian Luca
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the evolution of the X-ray emission properties of the magnetar 1E 1547.0-5408 since February 2004 over a time period covering three outbursts. We analyzed new and archival observations taken with the Swift, NuSTAR, Chandra and XMM-Newton X-ray satellites. The source has been observed at a relatively steady soft X-ray flux of $\approx$ 10$^{-11}$ erg cm$^{-2}$ s$^{-1}$ (0.3-10 keV) over the last 9 years, which is about an order of magnitude fainter than the flux at the peak of the last outburst in 2009, but a factor of $\sim$ 30 larger than the level in 2006. The broad-band spectrum extracted from two recent NuSTAR observations in April 2016 and February 2019 showed a faint hard X-ray emission up to $\sim$ 70 keV. Its spectrum is adequately described by a flat power law component, and its flux is $\sim$ $7 \times 10^{-12}$ erg cm$^{-2}$ s$^{-1}$ (10-70 keV), that is a factor of $\sim$ 20 smaller than at the peak of the 2009 outburst. The hard X-ray spectral shape has flattened significantly in time, which is at variance with the overall cooling trend of the soft X-ray component. The pulse profile extracted from these NuSTAR pointings displays variability in shape and amplitude with energy (up to $\approx$ 25 keV). Our analysis shows that the flux of 1E 1547.0-5408 is not yet decaying to the 2006 level and that the source has been lingering in a stable, high-intensity state for several years. This might suggest that magnetars can hop among distinct persistent states that are probably connected to outburst episodes and that their persistent thermal emission can be almost entirely powered by the dissipation of currents in the corona.
description: 10 pages, 7 figures, accepted for publication on A&A
An Abelian effective action reproducing screening and confinement in quenched SU(2) QCD
Creators: name: Hashimoto, Koichi
name: Chernodub, M. N.
name: Suzuki, Tsuneo
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In an Abelian projection SU(2) gluodynamics contains Abelian gauge fields (diagonal degrees of freedom) and Abelian matter fields (off-diagonal degrees). The matter fields are essential for the breaking of the adjoint string. We obtain numerically the effective action of the Abelian fields in quenched SU(2) QCD and show that the Abelian matter fields provide an essential contribution to the total action even in the infrared region.
description: 3 pages, 3 figures, 1 table, uses espcrc2.sty; Lattice2003(topology)
Charge Fluctuations for a Coulomb Fluid in a Disk on a Pseudosphere
Creators: name: Jancovici, B.
name: Téllez, G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The classical (i.e. non-quantum) equilibrium statistical mechanics of a Coulomb fluid living on a pseudosphere (an infinite surface of constant negative curvature) is considered. The Coulomb fluid occupies a large disk communicating with a reservoir (grand-canonical ensemble). The total charge $Q$ on the disk fluctuates. In a macroscopic description, the charge correlations near the boundary circle can be described as correlations of a surface charge density $σ$. In a macroscopic approach, the variance of $Q$ and the correlation function of $σ$ are computed; they are universal. These macroscopic results are shown to be valid for two solvable microscopic models, in the limit when the microscopic thickness of the surface charge density goes to zero.
description: 19 pages, LaTeX
A common origin for the circumnuclear disc and the nearby molecular clouds in the Galactic Centre
Creators: name: Ballone, Alessandro
name: Mapelli, Michela
name: Trani, Alessandro Alberto
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The origin of the molecular clouds orbiting SgrA* is one of the most debated questions about our Galactic Centre. Here, we present the hydrodynamic simulation of a molecular cloud infalling towards SgrA*, performed with the adaptive-mesh-refinement code RAMSES. Through such simulation, we propose that the circumnuclear disc and the +20 km/s cloud originated from the same tidal disruption episode, occurred less than 1 Myr ago. We also show that recent star formation is to be expected in the +20 km/s cloud, as also suggested by recent observations.
description: 10 pages, 10 figures. To be published in MNRAS
Assessing Site-Geometry for Architectural Design Using Graph Theory
Creators: name: Anca-Simona Horvath
Publisher: name: figshare
Year: 2021
Subjects: subject: 120104 Architectural Science and Technology (incl. Acoustics, Lighting, Structure and Ecologically Sustainable Design)
subject: FOS: Civil engineering
subject: 120101 Architectural Design
subject: FOS: Arts (arts, history of arts, performing arts, music)

description: This paper presents six node components from Tardigrade, an add-on developed for the visual programming language Grasshopper which works with Rhinoceros 3D. Tardigrade is a work in progress and will implement various general use nodes (/libraries/subroutines) that enhance Grasshopper's functionality. The components presented here employ four classic graph-search algorithms - Breadth First Search, Greedy Best Search, Dijkstra and A*. Widely used in computer science, graph theory was developed based on real-world urban problems but is now seldom used
by architects. The six components are general use, but were originally meant for topography analysis as decision making helpers based on Space Syntax. Often, an entirely empty, relatively big plot is offered for refurbishment. Lacking relevant landmarks, it is difficult to decide on road and
plot positioning. Graph theory can be used to establish road configurations by computing cost based paths between a start and an end-point or between a start and all other graph points. Site topography can come as meshes, free-form surfaces, level curves or 3D points. Any of these is easily reduced to a finite list of points, each with its x, y, z coordinates. The components work for 3D point collections regardless of their data structure. The graph's edges are reconstructed dynamically from the node's neighbors. They offer an otherwise lacking, easy topography analysis tool for Grasshopper users.
Illicit object detection in X-ray images using Vision Transformers
Creators: name: Cani, Jorgen
name: Mademlis, Ioannis
name: Chrysochoou, Adamantia Anna Rebolledo
name: Papadopoulos, Georgios Th.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Illicit object detection is a critical task performed at various high-security locations, including airports, train stations, subways, and ports. The continuous and tedious work of examining thousands of X-ray images per hour can be mentally taxing. Thus, Deep Neural Networks (DNNs) can be used to automate the X-ray image analysis process, improve efficiency and alleviate the security officers' inspection burden. The neural architectures typically utilized in relevant literature are Convolutional Neural Networks (CNNs), with Vision Transformers (ViTs) rarely employed. In order to address this gap, this paper conducts a comprehensive evaluation of relevant ViT architectures on illicit item detection in X-ray images. This study utilizes both Transformer and hybrid backbones, such as SWIN and NextViT, and detectors, such as DINO and RT-DETR. The results demonstrate the remarkable accuracy of the DINO Transformer detector in the low-data regime, the impressive real-time performance of YOLOv8, and the effectiveness of the hybrid NextViT backbone.
Baryogenesis and the New Cosmology
Creators: name: Trodden, Mark
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this talk I begin with a brief review of the status of approaches to understanding the origin of the baryon asymmetry of the universe (BAU). I then describe a recent model unifying three seemingly-distict problems facing particle cosmology: the origin of inflation, the generation of the BAU and the nature of dark energy.
description: 16 pages, RevTeX, Plenary talk presented at PASCOS-03, Mumbai, India; COSMO-02, Chicago, and at the Aspen Winter 2003 Conference on Particle Physics: At the Frontiers of Particle Physics, Aspen Center for Physics. To appear in the proceedings of PASCOS-03
Capital Flows to Africa: An Analysis of the Structure of Official and Private Capital Flows
Creators: name: Mhlanga, Nomathemba
name: Christy, Ralph D.
name: Mhlanga, Nomathemba
name: Christy, Ralph D.
Publisher: name: Unknown
Year: 2006
Subjects: Agricultural Finance

description: Although globalization was built on increased world trade, the movement of capital has accelerated faster in the past two decades. It is this free flow of capital that is offering African countries renewed hope of tapping global markets for the much needed resources to aid their economic growth while becoming fully integrated into the global economy. While past studies tackling external resource flows to Africa have focused on either official or private capital flows, this paper analyses both types of capital flows with the intention of providing a clearer picture on composition and magnitude of external resources to Africa. Three types of capital flows – Official Development Assistance (ODA), Foreign Direct Investment (FDI) and Workers Remittances – emerge as key to tackling Africa’s development problems. Together, these flows account for the bulk of resources to Africa. In addition, they have built-in advantages for economic development hence are more suited to addressing Africa’s growth challenges. To this end, African countries must enact policies that directly relate to aiding effectiveness of these flows.
Branching Brownian motion versus Random Energy Model in the supercritical phase: overlap distribution and temperature susceptibility
Creators: name: Bonnefont, Benjamin
name: Pain, Michel
name: Zindy, Olivier
Publisher: name: arXiv
Year: 2024
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In comparison with Derrida's REM, we investigate the influence of the so-called decoration processes arising in the limiting extremal processes of numerous log-correlated Gaussian fields. In particular, we focus on the branching Brownian motion and two specific quantities from statistical physics in the vicinity of the critical temperature. The first one is the two-temperature overlap, whose behavior at criticality is smoothened by the decoration process - unlike the one-temperature overlap which is identical - and the second one is the temperature susceptibility, as introduced by Sales and Bouchaud, which is strictly larger in the presence of decorations and diverges, close to the critical temperature, at the same speed as for the REM but with a different multiplicative constant. We also study some general decorated cases in order to highlight the fact that the BBM has a critical behavior in some sense to be made precise.
description: 53 pages. Version accepted for publication in J Stat Phys
Low energy excitations and dynamic Dzyaloshinskii-Moriya interaction in $α'$-NaV$_2$O$_5$ studied by far infrared spectroscopy
Creators: name: Rõõm, T.
name: Hüvonen, D.
name: Nagel, U.
name: Wang, Y. -J.
name: Kremer, R. K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have studied far infrared transmission spectra of alpha'-NaV2O5 between 3 and 200cm-1 in polarizations of incident light parallel to a, b, and c crystallographic axes in magnetic fields up to 33T. The triplet origin of an excitation at 65.4cm-1 is revealed by splitting in the magnetic field. The magnitude of the spin gap at low temperatures is found to be magnetic field independent at least up to 33T. All other infrared-active transitions appearing below Tc are ascribed to zone-folded phonons. Two different dynamic Dzyaloshinskii-Moriya (DM) mechanisms have been discovered that contribute to the oscillator strength of the otherwise forbidden singlet to triplet transition. 1. The strongest singlet to triplet transition is an electric dipole transition where the polarization of the incident light's electric field is parallel to the ladder rungs, and is allowed by the dynamic DM interaction created by a high frequency optical a-axis phonon. 2. In the incident light polarization perpendicular to the ladder planes an enhancement of the singlet to triplet transition is observed when the applied magnetic field shifts the singlet to triplet resonance frequency to match the 68cm-1 c-axis phonon energy. The origin of this mechanism is the dynamic DM interaction created by the 68cm-1 c-axis optical phonon. The strength of the dynamic DM is calculated for both mechanisms using the presented theory.
description: 21 pages, 22 figures. Version 2 with replaced fig. 18 were labels had been lost
Is There a Fundamental Upper Limit to the Mass of a Star Cluster?
Creators: name: Norris, Mark A.
name: van de Ven, Glenn
name: Kannappan, Sheila J.
name: Schinnerer, Eva
name: Leaman, Ryan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The discovery around the turn of the millenium of a population of very massive (M$_\star$ > 2$\times$10$^6$ M$_\odot$) compact stellar systems (CSS) with physical properties (radius, velocity dispersion, stellar mass etc.) that are intermediate between those of the classical globular cluster (GC) population and galaxies led to questions about their exact nature. Recently a consensus has emerged that these objects, usually called ultra compact dwarfs (UCDs), are a mass-dependent mixture of high mass star clusters and remnant nuclei of tidally disrupted galaxies. The existence of genuine star clusters with stellar masses >10$^7$ M$_\odot$ naturally leads to questions about the upper mass limit of the star cluster formation process. In this work we compile a comprehensive catalog of compact stellar systems, and reinforce the evidence that the true ancient star cluster population has a maximum mass of M$_\star$ ~ 5$\times$10$^7$ M$_\odot$, corresponding to a stellar mass at birth of close to 10$^8$ M$_\odot$. We then discuss several physical and statistical mechanisms potentially responsible for creating this limiting mass.
description: 10 pages, 2 figures. Accepted for publication in MNRAS
MOESM1 of Establishing views of traditional healers and biomedical practitioners on collaboration in mental health care in Zanzibar: a qualitative pilot study
Creators: name: Solera-Deuchar, Lindsay
name: Mussa, Mahmoud
name: Ali, Suleiman
name: Haji Haji
name: McGovern, Peter
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: Additional file 1. Consent form (English version).
Serving Those Who Served: Implementing a Client-Choice Food Pantry for Veterans in Cumberland County, North Carolina
Creators: name: Sumner, Christen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2025

description:
Food insecurity affects millions of Americans but is especially prevalent among the veteran population, who experience food insecurity at rates 7.4% higher than their non-veteran counterparts. In Cumberland County, North Carolina (NC), home to Fort Bragg, 16.3% of the county faces food insecurity. For many veterans, food insecurity is made worse by low median incomes, local food deserts, stigma, and access to affordable, nutritious foods. The program, Veteran Freshplace, adapts the evidence-based intervention Freshplace, a client-choice food pantry model, with monthly case management meetings and personalized referrals to local community resources. Using a pre-test post-test design, the evaluation will examine the program’s ability to improve food insecurity through the client-choice food pantry while increasing self-sufficiency by addressing many social determinants of health that affect food insecurity. The program aims to enhance food security and self-sufficiency for veterans in Cumberland County, NC, reduce health disparities, and support long-term stability through an integrated, community-based approach.
Geometry from geodesics: fine-tuning Ehlers, Pirani, and Schild
Creators: name: Wheeler, James T.
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Ehlers, Pirani, and Schild argued that measurements of null and timelike geodesics yield Weyl and projective connections, respectively, with compatibility in the lightlike limit giving an integrable Weyl connection. Their conclusions hold only for a 4-dim representation of the conformal connection on the null cone, and by restricting reparameterizations of timelike geodesics to yield a torsion-free, affine connection. An arbitrary connection gives greater freedom. A linear connection for the conformal symmetry of null geodesics requires the SO(4,2) representation. The enlarged class of projective transformations of timelike geodesics changes Weyl's projective curvature, and we find invariant forms of the torsion and nonmetricity, along with a new, invariant, second rank tensor field generalizing the dilatational curvature without requiring a metric. We show that either projective or conformal connections require a monotonic, twice differentiable function on a spacetime region foliated by order isomorphic, totally ordered, twice differentiable timelike curves in a necessarily Lorentzian geometry. We prove that the conditions for projective and conformal Ricci flatness imply each other and gauge choices within either can reduce the geometry to the original Riemannian form. Thus, measurements of null and timelike geodesics lead to an SO(4,2) connection, with no requirement for a lightlike limit. Reduction to integrable Weyl symmetry can only follow from the field equations of a gravity theory. We show that the simplest quadratic spacetime action leads to this reduction.
description: Minor corrections for final publication
High $T_c$ Superconductivity, Skyrmions and the Berry Phase
Creators: name: Basu, B.
name: Dhar, S.
name: Bandyopadhyay, P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: It is here pointed out that the antiferromagnetic spin fluctuation may be associated with a gauge field which gives rise to the antiferromagnetic ground state chirality. This is associated with the chiral anomaly and Berry phase when we consider the two dimensional spin system on the surface of a 3D sphere with a monopole at the centre. This realizes the RVB state where spinons and holons can be understood as chargeless spins and spinless holes attached with magnetic flux. The attachment of the magnetic flux of the charge carrier suggest, that this may be viewed as a skyrmion. The interaction of a massless fermion representing a neutral spin with a gauge field along with the interaction of a spinless hole with the gauge field enhances the antiferromagnetic correlation along with the pseudogap at the underdoped region. As the doping increases the antiferromagnetic long range order disappears for the critical doping parameter $δ_{sc}$. In this framework, the superconducting pairing may be viewed as caused by skyrmion-skyrmion bound states.
description: 10 pages, accepted in Phys. Rev. B
Alpha Particle X-Ray Spectrometer (APXS) On-board Chandrayaan-2 Rover -- Pragyan
Creators: name: Shanmugam, M.
name: Vadawale, S. V.
name: Patel, Arpit R.
name: Mithun, N. P. S.
name: Adalaja, Hitesh Kumar
name: Ladiya, Tinkal
name: Goyal, Shiv Kumar
name: Tiwari, Neeraj K.
name: Singh, Nishant
name: Kumar, Sushil
name: Painkra, Deepak Kumar
name: Hait, A. K.
name: Patinge, A.
name: Kumar, Abhishek
name: Basha, Saleem
name: Subramanian, Vivek R.
name: Venkatesh, R. G.
name: Prashant, D. B.
name: Navle, Sonal
name: Acharya, Y. B.
name: Murty, S. V. S.
name: Bhardwaj, Anil
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Alpha Particle X-ray Spectrometer (APXS) is one of the two scientific experiments on Chandrayaan-2 rover named as Pragyan. The primary scientific objective of APXS is to determine the elemental composition of the lunar surface in the surrounding regions of the landing site. This will be achieved by employing the technique of X-ray fluorescence spectroscopy using in-situ excitation source Cm-244 emitting both X-rays and alpha particles. These radiations excite characteristic X-rays of the elements by the processes of particle induced X-ray emission (PIXE) and X-ray fluorescence (XRF). The characteristic X-rays are detected by the state-of-the-art X-ray detector known as Silicon Drift Detector (SDD), which provides high energy resolution as well as high efficiency in the energy range of 1 to 25 keV. This enables APXS to detect all major rock forming elements such as, Na, Mg, Al, Si, Ca, Ti and Fe. The Flight Model (FM) of the APXS payload has been completed and tested for various instrument parameters. The APXS provides energy resolution of 135 eV at 5.9 keV for the detector operating temperature of about -35 deg C. The design details and the performance measurement of APXS are presented in this paper.
El debate sobre el status epistemológico de la educación su relevancia con el objeto de la disciplina y los tipos de muestreo
Creators: name: Rodas, Jhon Jairo Mosquera
Publisher: name: figshare
Year: 2021
Subjects: Education
Digital Humanities

description: La investigación presenta una descripción general de los hallazgos en materia del debate sobre el status epistemológico de la ciencia de la educación, señalando la relevancia del planteamiento del objeto disciplinar, en relación con la disciplina, para referir lo anterior se emplea un cuadro comparativo donde se evidencia el muestreo cualitativo y el muestreo cuantitativo como elementos esenciales del trabajo en investigación educativa, además de presentar una relación de las características de ambos tipos de muestreo.
Additional file 3 of Regulatory role of Chitinase 3-like 1 gene in papillary thyroid carcinoma proved by integration analyses of single-cell sequencing with cohort and experimental validations
Creators: name: Zhang, Xiaojun
name: Peng, Wanwan
name: Fan, Jie
name: Luo, Ruihua
name: Liu, Shanting
name: Du, Wei
name: Luo, Chaochao
name: Zheng, Jiawen
name: Pan, Xinghua
name: Ge, Hong
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary Material 3
rho propagation and dilepton production at finite pion density and temperature
Creators: name: Ayala, Alejandro
name: Magnin, Javier
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the propagation properties of the rho vector in a dense and hot pion medium. We introduce a finite value of the chemical potential associated to a conserved pion number and argue that such description is valid during the hadronic phase of a relativistic heavy-ion collision, between chemical and thermal freeze-out, where the strong interaction drives pion number to a fixed value. By invoking vector dominance and rho saturation, we also study the finite pion density effects into the low mass dilepton production rate. We find that the distribution moderately widens and the position of the peak shifts toward larger values of the pair invariant mass, at the same time that the height of the peak decreases when the value of the chemical potential grows. We conclude by arguing that for the description of the dilepton spectra at ultra-relativistic energies, such as those of RHIC and LHC, the proper treatment of the large pion density might be a more important effect to consider than the influence of a finite baryon density.
description: 9 pages, 11 Postscript figures, uses ReVTeX4. Expanded discussion. References added. Published version
Reduced volume and reflection for bright optical tweezers with radial Laguerre-Gauss beams
Creators: name: Béguin, J. -B.
name: Laurat, J.
name: Luan, X.
name: Burgers, A. P.
name: Qin, Z.
name: Kimble, H. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Spatially structured light has opened a wide range of opportunities for enhanced imaging as well as optical manipulation and particle confinement. Here, we show that phase-coherent illumination with superpositions of radial Laguerre-Gauss (LG) beams provides improved localization for bright optical tweezer traps, with narrowed radial and axial intensity distributions. Further, the Gouy phase shifts for sums of tightly focused radial LG fields can be exploited for novel phase-contrast strategies at the wavelength scale. One example developed here is the suppression of interference fringes from reflection near nano-dielectric surfaces, with the promise of improved cold-atom delivery and manipulation.
Rademacher processes and bounding the risk of function learning
Creators: name: Koltchinskii, Vladimir
name: Panchenko, Dmitry
Publisher: name: arXiv
Year: 2004
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G35

description: We construct data dependent bounds on the risk in function learning problems. The bounds are based on the local norms of the Rademacher process indexed by the underlying function class and they do not require prior knowledge about the distribution of the training examples or any specific properties of the function class.
description: 14 pages
QCD Predictions for Meson Electromagnetic Form Factors at High Momenta: Testing Factorization in Exclusive Processes
Creators: name: Ding, Heng-Tong
name: Gao, Xiang
name: Hanlon, Andrew D.
name: Mukherjee, Swagato
name: Petreczky, Peter
name: Shi, Qi
name: Syritsyn, Sergey
name: Zhang, Rui
name: Zhao, Yong
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We report the first lattice QCD computation of pion and kaon electromagnetic form factors, $F_M(Q^2)$, at large momentum transfer up to 10 and 28 $\mathrm{GeV}^2$, respectively. Utilizing physical masses and two fine lattices, we achieve good agreement with JLab experimental results at $Q^2 \lesssim 4~\mathrm{GeV}^2$. For $Q^2 \gtrsim 4~\mathrm{GeV}^2$, our results provide $\textit{ab-initio}$ QCD benchmarks for the forthcoming experiments at JLab 12 GeV and future electron-ion colliders. We also test the QCD collinear factorization framework utilizing our high-$Q^2$ form factors at next-to-next-to-leading order in perturbation theory, which relates the form factors to the leading Fock-state meson distribution amplitudes. Comparisons with independent lattice QCD calculations using the same framework demonstrate, within estimated uncertainties, the universality of these nonperturbative quantities.
description: Phys. Rev. Lett. 133, 181902; 15 pages, 9 figures
Unruh-DeWitt Particle Detectors in Bouncing Cosmologies
Creators: name: Conroy, Aindriú
name: Taylor, Peter
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study semi-classical particle production in non-singular bouncing cosmologies by employing the Unruh-DeWitt model of a particle detector propagating in this class of spacetimes. The scale factor for the bouncing cosmology is derived analytically and is inspired by the modified Friedmann equation employed in the loop quantum cosmology literature. We examine how the detector response varies with the free parameters in this model such as the equation of state during the contraction phase and the critical energy density during the bounce phase. We also investigate whether such a signature in the particle detector survives at late times.
description: 28 pages, 11 figures. Minor revisions (v2). Aligning with published edition (v3)
MOESM10 of Engineering of Streptomyces lividans for heterologous expression of secondary metabolite gene clusters
Creators: name: Ahmed, Yousra
name: Rebets, Yuriy
name: Estévez, Marta
name: Zapp, Josef
name: Myronovskyi, Maksym
name: Luzhetskyy, Andriy
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Additional file 10: Fig. S6. 1H NMR overview spectrum.
Upper bounds for the prime divisors of friends of 10
Creators: name: Mandal, Sourav
name: Mandal, Sagar
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 11Axx, 11A25

description: In this paper we propose necessary upper bounds for the second, third and fourth smallest prime divisors of friends of 10 based on the number of distinct prime divisors of it.
description: 12 pages
NPR/PBS NewsHour/Marist Poll: October 2018 Pre-Election Poll
Creators: name: National Public Radio
name: PBS NewsHour
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: President Donald Trump job approval (1); importance of 2018 Congressional election (1); 2018 Congressional election (2); civility between parties since Trump election (2); violence concerns over lack of civility (1); suspicious package deliveries to Trump critics (3).
Chiral quark model with relativistic kinematics
Creators: name: Garcilazo, H.
name: Valcarce, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The non-strange baryon spectrum is studied within a three-body model that incorporates relativistic kinematics. We found that the combined effect of relativistic kinematics together with the pion exchange between quarks is able to reverse the order of the first positive- and negative-parity nucleon excited states as observed experimentally. Including the chiral partner of the pion (the $σ$ meson) leads to an overall good description of the spectrum.
description: 10 pages, 2 figures. To appear in Phys. Rev. C
Order in the ground state of a simple cubic dipole lattice in an external field
Creators: name: Ashhab, S.
name: Carignano, M.
name: Madjet, M. E.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Motivated by the presence of a lattice of rotating molecular dipoles in the high temperature phase of methylammonium lead iodide, we investigate the ground state of a simple cubic lattice of dipoles interacting with each other via the dipole-dipole interaction and with an external field via the Zeeman interaction. In the absence of an external field, the ground state is infinitely degenerate, and all the configurations in the ground state manifold are periodic along the three lattice axes with period 2. We numerically determine the ground state of a 1000-dipole lattice interacting with an external field, and we analyze the polarization, dipole orientation statistics and correlations in this state. These calculations show that for some special directions of the external field the two-site periodicity in the dipole configurations is preserved, while in the general case this periodicity is lost and complex dipole configurations form in the presence of the external field.
description: 16 pages (preprint), 4 figures
title: Examining Arctic Melt Pond Dynamics via High Resolution Satellite Imagery
Creators: name: Abbott, Austin
Publisher: name: Old Dominion University Libraries
Year: 2021

description: The Arctic Ocean is a rapidly changing environment, and a key observational system for monitoring climate change. The Arctic is going under a rapid transition from thicker, multi-year ice, to thinner first-year ice, that may have many potential consequences. As first year Arctic sea ice begins to retreat in the spring and early summer, melting snow and ice form ponds on the surface- “melt ponds”. These melt ponds increase light transmission to the water column, resulting in warming and increased primary production under the ice. Recent advances in high resolution satellite imagery now allow us to monitor the development and propagation of melt ponds from space. 14 Worldview images (privately owned) of first year ice in the Chukchi Sea with sub-meter scale spatial resolution were recorded from June and July 2018 and classified into 4 distinct classes- Un-ponded Ice, Dark Melt Pond, Light Melt Pond, and Open Water.
MOESM8 of The transcriptional correlates of divergent electric organ discharges in Paramormyrops electric fish
Creators: name: Losilla, Mauricio
name: Luecke, David
name: Gallant, Jason
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 8. MA plots from the 10 pairwise DGE analysis. Red dots represent genes with FDR
Estimating Mutual Information
Creators: name: Kraskov, Alexander
name: Stoegbauer, Harald
name: Grassberger, Peter
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We present two classes of improved estimators for mutual information $M(X,Y)$, from samples of random points distributed according to some joint probability density $μ(x,y)$. In contrast to conventional estimators based on binnings, they are based on entropy estimates from $k$-nearest neighbour distances. This means that they are data efficient (with $k=1$ we resolve structures down to the smallest possible scales), adaptive (the resolution is higher where data are more numerous), and have minimal bias. Indeed, the bias of the underlying entropy estimates is mainly due to non-uniformity of the density at the smallest resolved scale, giving typically systematic errors which scale as functions of $k/N$ for $N$ points. Numerically, we find that both families become {\it exact} for independent distributions, i.e. the estimator $\hat M(X,Y)$ vanishes (up to statistical fluctuations) if $μ(x,y) = μ(x) μ(y)$. This holds for all tested marginal distributions and for all dimensions of $x$ and $y$. In addition, we give estimators for redundancies between more than 2 random variables. We compare our algorithms in detail with existing algorithms. Finally, we demonstrate the usefulness of our estimators for assessing the actual independence of components obtained from independent component analysis (ICA), for improving ICA, and for estimating the reliability of blind source separation.
description: 16 pages, including 18 figures
Explaining Fermions Mass and Mixing Hierarchies through $U(1)_X$ and $Z_2$ Symmetries
Creators: name: Shaikh, Abdul Rahaman
name: Adhikari, Rathin
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: For understanding the hierarchies of fermion masses and mixing, we extend the Standard Model gauge group with \( U(1)_X \) and \( Z_2 \) symmetry. The field content of the Standard Model is augmented by three heavy right-handed neutrinos, two new scalar singlets, and a scalar doublet. \( U(1)_X \) charges of different fields are determined after satisfying anomaly cancellation conditions. In this scenario, the fermion masses are generated through higher-dimensional effective operators with \( O(1) \) Yukawa couplings. The small neutrino masses are obtained through type-1 seesaw mechanism using the heavy right-handed neutrino fields, whose masses are generated by the new scalar fields. We discuss the flavour-changing neutral current processes that arise due to the sequential nature of \( U(1)_X \) symmetry. We have written effective higher-dimensional operators in terms of renormalizable dimension-four operators by introducing vector-like fermions.
description: matches published version
Anisotropic Rabi model with two-photon relaxation
Creators: name: Li, Hui
name: Shi, Jia-Kai
name: Fan, Li-Bao
name: Li, Zi-Min
name: Shu, Chuan-Cun
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The interplay of three light-matter interaction processes - rotating and counter-rotating interactions and two-photon relaxation of the light field - is a topic of interest in quantum optics and quantum information processing. In this work, we theoretically investigate the three light-matter interaction processes using the anisotropic Rabi model, which accounts for different strengths of rotating and counter-rotating interactions and the unique occurrence of photon escape exclusively in pairs. By numerically solving the Lindblad master equation, we analyze the excitation-relaxation dynamics and derive a non-Hermitian effective Hamiltonian to gain further physical insights. To explore the individual effects of these interactions, we examine three analytically tractable limits of the effective Hamiltonian. Our analysis reveals that the three competitive light-matter interaction processes exhibit sensitivity to parity, leading to intriguing phenomena in both transient and steady states. Particularly interesting dynamical patterns resembling quantum phase transitions emerge when these three interaction terms compete. This work deepens the understanding of ultrastrong light-matter interaction in open quantum systems and offers valuable insights into cavity-based quantum computations.
description: 13 pages, 8 figures
The Momentum Spaces of $κ$-Minkowski noncommutative spacetime
Creators: name: Lizzi, Fedele
name: Mercati, Flavio
name: Manfredonia, Mattia
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A useful concept in the development of physical models on the $κ$-Minkowski noncommutative spacetime is that of a curved momentum space. This structure is not unique: several inequivalent momentum space geometries have been identified. Some are associated to a different assumption regarding the signature of spacetime (i.e. Lorentzian vs. Euclidean), but there are inequivalent momentum spaces that can be associated to the same signature and even the same group of symmetries. Moreover, in the literature there are two approaches to the definition of these momentum spaces, one based on the right- (or left-)invariant metrics on the Lie group generated by the $κ$-Minkowski algebra. The other is based on the construction of $5$-dimensional matrix representation of the $κ$-Minkowski coordinate algebra. Neither approach leads to a unique construction. Here, we find the relation between these two approaches and introduce a unified approach, capable of describing all momentum spaces, and identify the corresponding quantum group of spacetime symmetries. We reproduce known results and get a few new ones. In particular, we describe the three momentum spaces associated to the $κ$-Poincaré group, which are half of a de Sitter, anti-de Sitter or Minkowski space, and we identify what distinguishes them. Moreover, we find a new momentum space with the geometry of a light cone, associated to a $κ$-deformation of the Carroll group.
description: Completely rewritten version. Past results by other authors have been taken into account, and a new and better formulation has been introduced, which allows to connect the different approaches to the momentum space of kappa-Minkowski, and identify new, previously undiscovered, cases, like the momentum space associated to the kappa-Carroll group
Depression, anxiety and stress among female student-athletes: a systematic review and meta-analysis
Creators: name: Beisecker, Ling
name: Harrison, Patrick
name: Josephson, Marzia
name: DeFreese, J D
Publisher: name: BMJ
Year: 2024

description: OBJECTIVE: To identify, quantify and analyse determinants of depression, anxiety and stress symptoms among female student-athletes.
DESIGN: Systematic review and meta-analysis.
DATA SOURCES: Five online databases (PubMed, CINAHL, PsychInfo, SportDiscus and Web of Science) searched from inception through 14 September 2023. Hand-searches and contacting authors for eligible studies.
ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Articles were included if they were published in English, included female student-athletes competing at National Collegiate Athletic Association institutions, and measured symptom-level depression, anxiety and/or stress.
RESULTS AND SUMMARY: We screened 2415 articles; 52 studies (N=13 849) were included in the systematic review with 13 studies qualifying for meta-analysis. Seventeen determinants were identified including injury (eg, concussions), health (eg, sleep hygiene) and social factors (eg, social support). As data specific to female student-athletes was delineated from studies that included other populations, we observed 16 studies (30.7%) reported that identifying as female was a meaningful determinant of depression, anxiety and stress in athletes. Results of the meta-analysis (k=13, N=5004) suggested a small but significant association (r=0.15, 95% CI 0.05 to 0.24, p=0.004) between other determinants and depression, anxiety, and stress among female student-athletes.
CONCLUSION: Coaches, trainers and clinicians are key contributors in supporting female student-athlete mental health, with responsibilities for integrating mental skill training, sleep hygiene education and regular assessments. Comprehensive mental health and tailored education programmes considering determinants such as injury, health and social factors specific to female student-athletes are needed to enhance mental health equity in sport.
PROSPERO REGISTRATION NUMBER: CRD42022362163.
On duality triads
Creators: name: Kwasniewski, A. K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 11B37, 11B39

description: We introduce a duality triads` notion. These are dual recurrences as used in dynamical data bases theory completed by a third pertinacious relation. Several representative examples of them are given. q-Gaussian triads as well as Fibonomial triangle and duality triads in finite operator calculus are presented in the paper that follows this one .
A model of systemic BIM adoption
Creators: name: Murguia, Danny
Publisher: name: Loughborough University
Year: 2021
Subjects: subject: 129999 Built Environment and Design not elsewhere classified
subject: FOS: Civil engineering

description: Systemic innovations require multiple interdependent actors to change their practices simultaneously to realise the benefits of the innovation. Building Information Modelling (BIM) has been classified as a systemic innovation that is adopted by projects, firms, and users. However, the slow diffusion of BIM in the Architecture, Engineering, and Construction (AEC) sector has maintained the gap between BIM visions and actual BIM practice. Whilst some adoption surveys indicate that BIM is business as usual, anecdotal evidence suggests that the spread of BIM across supply chains is still limited. Notably, BIM is hardly used at the same level by all users and firms in a temporary project coalition. This uneven distribution of firm capabilities and user adoption hinders the desired outcome at the supply-chain level.This study investigates the systemic adoption of digital innovations and is aimed at formulating a model of systemic BIM adoption. To achieve this, relevant theories and influential factors were selected to formulate a conceptual model. A mixed-methods approach was selected to develop and validate the model. Data were collected and analysed using quantitative and qualitative evidence from BIM-enabled projects.This study extends the body of knowledge by presenting a multi-level model of systemic BIM adoption that holistically combines factors at the user, firm, project, and industry levels. The cross-level relationships provide novel insights into our understanding of systemic BIM adoption. The model is effective in providing a useful framework for policymakers to implement policies to accelerate wider adoption within supply chains. The model is particularly needed in a context where governments are planning to mandate BIM in construction. Further, systemic BIM adoption is the gateway for the digital construction industry. Therefore, the model would also provide a practical implementation framework as the industry progresses towards a digital mode of working and could underpin further digitalisation of the sector worldwide.
Dionysos.jl: a Modular Platform for Smart Symbolic Control
Creators: name: Calbert, Julien
name: Banse, Adrien
name: Legat, Benoît
name: Jungers, Raphaël M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We introduce Dionysos.jl, a modular package for solving optimal control problems for complex dynamical systems using state-of-the-art and experimental techniques from symbolic control, optimization, and learning. More often than not with Cyber-Physical systems, the only sensible way of developing a controller is by discretizing the different variables, thus transforming the control task into a purely combinatorial problem on a finite-state mathematical object, called an abstraction of this system. Although this approach offers a safety-critical framework, the available techniques suffer important scalability issues. In order to render these techniques practical, it is necessary to construct smarter abstractions that differ from classical techniques by partitioning the state-space in a non trivial way.
description: Published in the JuliaCon Proceedings
Additional file 1 of Reporting of determinants of health inequities and participant characteristics in randomized controlled trials of juvenile idiopathic arthritis in Canada: a scoping review
Creators: name: Gheshlaghi, Niloofar
name: Thomas, Megan
name: Trehan, Natasha
name: Harrison, Mark
name: De Vera, Mary A.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy

description: Supplementary Material 1