cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An Analysis of Centrality Measures for Complex and Social Networks
Creators: name: Grando, Felipe
name: Noble, Diego
name: Lamb, Luis C.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Measures of complex network analysis, such as vertex centrality, have the potential to unveil existing network patterns and behaviors. They contribute to the understanding of networks and their components by analyzing their structural properties, which makes them useful in several computer science domains and applications. Unfortunately, there is a large number of distinct centrality measures and little is known about their common characteristics in practice. By means of an empirical analysis, we aim at a clear understanding of the main centrality measures available, unveiling their similarities and differences in a large number of distinct social networks. Our experiments show that the vertex centrality measures known as information, eigenvector, subgraph, walk betweenness and betweenness can distinguish vertices in all kinds of networks with a granularity performance at 95%, while other metrics achieved a considerably lower result. In addition, we demonstrate that several pairs of metrics evaluate the vertices in a very similar way, i.e. their correlation coefficient values are above 0.7. This was unexpected, considering that each metric presents a quite distinct theoretical and algorithmic foundation. Our work thus contributes towards the development of a methodology for principled network analysis and evaluation.
description: 6 pages, 5 tables, 1 figure
R-band light-curve properties of Type Ia supernovae from the (intermediate) Palomar Transient Factory
Creators: name: Papadogiannakis, S.
name: Goobar, A.
name: Amanullah, R.
name: Bulla, M.
name: Dhawan, S.
name: Doran, G.
name: Feindt, U.
name: Ferretti, R.
name: Hangard, L.
name: Howell, D. A.
name: Johansson, J.
name: Kasliwal, M. M.
name: Laher, R.
name: Masci, F.
name: Nyholm, A.
name: Ofek, E.
name: Sollerman, J.
name: Yan, L.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the best 265 sampled R-band light curves of spectroscopically identified Type Ia supernovae (SNe) from the Palomar Transient Factory (PTF; 2009-2012) survey and the intermediate Palomar Transient Factory (iPTF; 2013-2017). A model-independent light curve template is built from our data-set with the purpose to investigate average properties and diversity in our sample. We searched for multiple populations in the light curve properties using machine learning tools. We also utilised the long history of our light curves, up to 4000 days, to exclude any significant pre- or post- supernova flares. From the shapes of light curves we found the average rise time in the R band to be $16.8^{+0.5}_{-0.6}$ days. Although PTF/iPTF were single-band surveys, by modelling the residuals of the SNe in the Hubble-Lemaître diagram, we estimate the average colour excess of our sample to be $ \approx 0.05(2)$ mag and thus the mean corrected peak brightness to be $M_R = -19.02\pm0.02$ $+5 \log( {\rm H}_0 [{\rm km} \cdot{\rm s}^{-1} {\rm Mpc}^{-1}]/70)$ mag with only weakly dependent on light curve shape. The intrinsic scatter is found to be $σ_R = 0.186 \pm 0.033$ mag for the redshift range $0.05
description: 41 pages, 19 figures, accepted MNRAS
Radiative corrections to the jet quenching parameter in dilute and dense media
Creators: name: Blaizot, Jean-Paul
name: Dominguez, Fabio
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We extend the calculation of radiative corrections to momentum broadening in a QCD medium to include processes where single scattering dominates over multiple soft scatterings. Our analysis focusses on processes that are enhanced by a potentially large double logarithmic contribution. We demonstrate that such double logarithmic contributions emerge in calculations of momentum broadening in dilute systems where only single scattering occurs. We show how the different regimes, multiple versus single scattering, constrain different parts of the phase space.
description: 15 pages
Gravitational field and equations of motion of compact binaries to 5/2 post-Newtonian order
Creators: name: Blanchet, Luc
name: Faye, Guillaume
name: Ponsot, Bénédicte
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We derive the gravitational field and equations of motion of compact binary systems up to the 5/2 post-Newtonian approximation of general relativity (where radiation-reaction effects first appear). The approximate post-Newtonian gravitational field might be used in the problem of initial conditions for the numerical evolution of binary black-hole space-times. On the other hand we recover the Damour-Deruelle 2.5PN equations of motion of compact binary systems. Our method is based on an expression of the post-Newtonian metric valid for general (continuous) fluids. We substitute into the fluid metric the standard stress-energy tensor appropriate for a system of two point-like particles. We remove systematically the infinite self-field of each particle by means of the Hadamard partie finie regularization.
description: 41 pages to appear in Physical Review D
Transmutation of nonlocal scale in infinite derivative field theories
Creators: name: Buoninfante, Luca
name: Ghoshal, Anish
name: Lambiase, Gaetano
name: Mazumdar, Anupam
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we will show an ultraviolet -infrared connection for ghost-free infinite derivative field theories where the Lagrangians are made up of exponentials of entire functions. In particular, for $N$-point amplitudes a new scale emerges in the infrared from the ultraviolet, i.e. $M_{\rm eff}\sim M_s/N^α,$ where $M_s$ is the fundamental scale beyond the Standard Model, and $α>0$ depends on the specific choice of an entire function and on whether we consider zero or nonzero external momenta. We will illustrate this by first considering a scalar toy model with a cubic interaction, and subsequently a scalar toy-model inspired by ghost-free infinite derivative theories of gravity. We will briefly discuss some phenomenological implications, such as making the nonlocal region macroscopic in the infrared.
description: 9 pages, 3 figures
Additional file 1: of Health issues in a Bangalore slum: findings from a household survey using a mobile screening toolkit in Devarajeevanahalli
Creators: name: George, Carolin
name: Gift Norman
name: Avanti Wadugodapitya
name: Rao, Shyam
name: Nalige, Shailendra
name: Varshapriya Radhakrishnan
name: Behar, Sapna
name: Witte, Luc De
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Design of THULSI prototype. (PDF 430 kb)
Analyzing symmetry breaking within a chaotic quantum system via Bayesian inference
Creators: name: Barbosa, C. I.
name: Harney, H. L.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Bayesian inference is applied to the level fluctuations of two coupled microwave billiards in order to extract the coupling strength. The coupled resonators provide a model of a chaotic quantum system containing two coupled symmetry classes of levels. The number variance is used to quantify the level fluctuations as a function of the coupling and to construct the conditional probability distribution of the data. The prior distribution of the coupling parameter is obtained from an invariance argument on the entropy of the posterior distribution.
description: Example from chaotic dynamics. 8 pages, 7 figures. Submitted to PRE
MOESM2 of Identification and validation of reference genes for real-time quantitative RT-PCR analysis in jute
Creators: name: Md. Hossain
name: Rasel Ahmed
name: Md. Haque
name: Md. Alam
name: Md. Islam
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Marine Biology

description: Additional file 2: Supplementary Figure.
An ancient and a primordial collisional family as the main sources of X-type asteroids of the inner Main Belt
Creators: name: Delbo, Marco
name: Avdellidou, Chrysa
name: Morbidelli, Alessandro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The near-Earth asteroid population suggests the existence of an inner Main Belt source of asteroids that belongs to the spectroscopic X-complex and has moderate albedos. The identification of such a source has been lacking so far. We argue that the most probable source is one or more collisional asteroid families that escaped discovery up to now. We apply a novel method to search for asteroid families in the inner Main Belt population of asteroids belonging to the X-complex with moderate albedo. Instead of searching for asteroid clusters in orbital elements space, which could be severely dispersed when older than some billions of years, our method looks for correlations between the orbital semimajor axis and the inverse size of asteroids. This correlation is the signature of members of collisional families, which drifted from a common centre under the effect of the Yarkovsky thermal effect. We identify two previously unknown families in the inner Main Belt among the moderate-albedo X-complex asteroids. One of them, whose lowest numbered asteroid is (161) Author, is ~3 Gyrs-old, whereas the second one, whose lowest numbered object is (689) Zita, can be as old as the Solar System. Members of this latter family have orbital eccentricities and inclinations that spread them over the entire inner Main Belt, which is an indication that this family could be primordial, i.e. it formed before the giant planet orbital instability. The vast majority of moderate-albedo X-complex asteroids of the inner-Main Belt are genetically related, as they can be included into few asteroid families. Only nine X-complex asteroids with moderate albedo of the inner Main Belt cannot be included in asteroid families. We suggest that these bodies formed by direct accretion of the solids in the protoplanetary disk, and are thus surviving planetesimals.
description: Accepted for publication in Astronomy and Astrophysics
Optical Response of Grating-Coupler-Induced Intersubband Resonances: The Role of Wood's Anomalies
Creators: name: Wendler, L.
name: Kraft, T.
name: Hartung, M.
name: Berger, A.
name: Wixforth, A.
name: Sundaram, M.
name: English, J. H.
name: Gossard, A. C.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Grating-coupler-induced collective intersubband transitions in a quasi-two-dimensional electron system are investigated both experimentally and theoretically. Far-infrared transmission experiments are performed on samples containing a quasi-two-dimensional electron gas quantum-confined in a parabolic quantum well. For rectangular shaped grating couplers of different periods we observe a strong dependence of the transmission line shape and peak height on the period of the grating, i.e. on the wave vector transfer from the diffracted beams to the collective intersubband resonance. It is shown that the line shape transforms with increasing grating period from a Lorentzian into a strongly asymmetric line shape. Theoretically, we treat the problem by using the transfer-matrix method of local optics and apply the modal-expansion method to calculate the influence of the grating. The optically uniaxial quasi-two-dimensional electron gas is described in the long-wavelength limit of the random-phase approximation by a local dielectric tensor, which includes size quantization effects. Our theory reproduces excellently the experimental line shapes. The deformation of the transmission line shapes we explain by the occurrence of both types of Wood's anomalies.
description: 28 pages, 7 figures. Physical Review B , in press
A Configurable Transport Layer for CAF
Creators: name: Hiesgen, Raphael
name: Charousset, Dominik
name: Schmidt, Thomas C.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: The message-driven nature of actors lays a foundation for developing scalable and distributed software. While the actor itself has been thoroughly modeled, the message passing layer lacks a common definition. Properties and guarantees of message exchange often shift with implementations and contexts. This adds complexity to the development process, limits portability, and removes transparency from distributed actor systems. In this work, we examine actor communication, focusing on the implementation and runtime costs of reliable and ordered delivery. Both guarantees are often based on TCP for remote messaging, which mixes network transport with the semantics of messaging. However, the choice of transport may follow different constraints and is often governed by deployment. As a first step towards re-architecting actor-to-actor communication, we decouple the messaging guarantees from the transport protocol. We validate our approach by redesigning the network stack of the C++ Actor Framework (CAF) so that it allows to combine an arbitrary transport protocol with additional functions for remote messaging. An evaluation quantifies the cost of composability and the impact of individual layers on the entire stack.
Signal and noise in helioseismic holography
Creators: name: Gizon, Laurent
name: Fournier, Damien
name: Yang, Dan
name: Birch, Aaron C.
name: Barucq, Hélène
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Helioseismic holography is an imaging technique used to study heterogeneities and flows in the solar interior from observations of solar oscillations at the surface. Holograms contain noise due to the stochastic nature of solar oscillations. We provide a theoretical framework for modeling signal and noise in Porter-Bojarski helioseismic holography. The wave equation may be recast into a Helmholtz-like equation, so as to connect with the acoustics literature and define the holography Green's function in a meaningful way. Sources of wave excitation are assumed to be stationary, horizontally homogeneous, and spatially uncorrelated. Using the first Born approximation we calculate holograms in the presence of perturbations in sound-speed, density, flows, and source covariance, as well as the noise level as a function of position. This work is a direct extension of the methods used in time-distance helioseismology to model signal and noise. To illustrate the theory, we compute the hologram intensity numerically for a buried sound-speed perturbation at different depths in the solar interior. The reference Green's function is obtained for a spherically-symmetric solar model using a finite-element solver in the frequency domain. Below the pupil area on the surface, we find that the spatial resolution of the hologram intensity is very close to half the local wavelength. For a sound-speed perturbation of size comparable to the local spatial resolution, the signal-to-noise ratio is approximately constant with depth. Averaging the hologram intensity over a number $N$ of frequencies above 3 mHz increases the signal-to-noise ratio by a factor nearly equal to the square root of $N$. This may not be the case at lower frequencies, where large variations in the holographic signal are due to the individual contributions of the long-lived modes of oscillation.
description: Submitted to Astronomy and Astrophysics
Invitation to higher local fields, Part I, section 6: Topological Milnor K-groups of higher local fields
Creators: name: Fesenko, Ivan
Publisher: name: arXiv
Year: 2000
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 54E99, 19D99, 46A45, 19F15

description: Certain topologies on Milnor K-groups of higher local fields K are studied. These are related to the topology on the multiplicative group and important for explicit higher local class field theory. The structure of the quotient of Milnor K-groups modulo the intersection of all neighbourhoods of zero is described.
description: For introduction and notation, see math.NT/0012131 . Published by Geometry and Topology Monographs at http://www.maths.warwick.ac.uk/gt/GTMon3/m3-I-6.abs.html
Additional file 4: of Assessing core, e-learning, clinical and technology readiness to integrate telemedicine at public health facilities in Uganda: a health facility â based survey
Creators: name: Kiberu, Vincent
name: Scott, Richard
name: Mars, Maurice
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Science Policy
subject: 60506 Virology
subject: Computational Biology

description: Appendix 4. Detailed breakdown of results by health facility. (DOC 91 kb)
OPTIMIZING PRECONCEPTION PREPARATION FOR WOMEN WHO BECOME PREGNANT DUE TO CHRONIC ENDOMETRITIS
Creators: name: Kurbaniyazova, A.Z.
Publisher: name: Zenodo
Year: 2024

description: Chronic endometritis is one of the most common inflammatory diseases of the female reproductive system. Timely treatment of the disease is insurance against serious complications, including oncology and infertility.
Science, literature and politics : tracing a culture of science
Creators: name: Garrard, Greg
name: Lacey, Sajni
Publisher: name: The University of British Columbia
Year: 2017

description: Greg ​Garrard, Associate Dean of Research and Graduate Studies Professor in the Department of English at UBC Okanagan, explores cultural reactions to science through literature and the ramifications of politicizing science. This podcast was created by the UBC Okanagan Library in contribution to Science Literacy Week - scienceliteracy.ca/
Impacts of EUV Wavefronts on Coronal Structures in Homologous Coronal Mass Ejections
Creators: name: Liu, Rui
name: Wang, Yuming
name: Lee, Jeongwoo
name: Shen, Chenglong
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Large-scale propagating fronts are frequently observed during solar eruptions, yet it is open whether they are waves or not, partly because the propagation is modulated by coronal structures, whose magnetic field we still cannot measure. However, when a front impacts coronal structures, an opportunity arises for us to look into the magnetic properties of both interacting parties in the low-$β$ corona. Here we studied large-scale EUV fronts accompanying three coronal mass ejections (CMEs), each originating from a kinking rope-like structure in the NOAA active region (AR) 12371. These eruptions were homologous and the surrounding coronal structures remained stationary. Hence we treated the events as one observed from three different viewing angles, and found that the primary front directly associated with the CME consistently transmits through 1) a polar coronal hole, 2) the ends of a crescent-shaped equatorial coronal hole, leaving a stationary front outlining its AR-facing boundary, and 3) two quiescent filaments, producing slow and diffuse secondary fronts. The primary front also propagates along an arcade of coronal loops and slows down due to foreshortening at the far side, where local plasma heating is indicated by an enhancement in 211 Å (Fe XIV) but a dimming in 193 Å (Fe XII) and 171 Å (Fe IX). The strength of coronal magnetic field is therefore estimated to be $\sim\,$2 G in the polar coronal hole and $\sim\,$4 G in the coronal arcade neighboring the active region. These observations substantiate the wave nature of the primary front and shed new light on slow fronts.
description: Accepted for publication in ApJ
Dispersionless Fermionic KdV
Creators: name: Barcelos-Neto, J.
name: Constandache, Alin
name: Das, Ashok
Publisher: name: arXiv
Year: 1999
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the dispersionless limits of the Kupershmidt equation, the SUSY KdV-B equation and the SUSY KdV equation. We present the Lax description for each of these models and bring out various properties associated with them as well as discuss open questions that need to be addressed in connection with these models.
description: 15 pages
Dynamics of cylindrical domain walls in nematic liquid crystals
Creators: name: Stelzer, Joachim
name: Arodz, Henryk
Publisher: name: arXiv
Year: 1997
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Analytical calculations of the dynamics of a curved domain wall in a nematic liquid crystal are performed. The core of the wall is assumed to form a cylinder, whose axis coincides with the direction of an external magnetic field. The equation of motion for the nematic director field is solved in a comoving coordinate frame by applying a polynomial expansion of the tilt angle with respect to the radial distance from the wall core. Starting from a cylindrical domain wall at rest as initial conditions, the shrinking of the cylinder and the change of the wall width is analysed in detail. In particular, we find that the Neel wall decays faster than the Bloch wall, in agreement with energy considerations.
description: 17 pages, 7 Postscript figures
Toda chains with type A_m Lie algebra for multidimensional m-component perfect fluid cosmology
Creators: name: Kasper, U.
name: Gavrilov, V. R.
name: Melnikov, V. N.
name: Rainer, M.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider a D-dimensional cosmological model describing an evolution of Ricci-flat factor spaces, M_1,...M_n (n > 2), in the presence of an m-component perfect fluid source (n > m > 1). We find characteristic vectors, related to the matter constants in the barotropic equations of state for fluid components of all factor spaces. We show that, in the case where we can interpret these vectors as the root vectors of a Lie algebra of Cartan type A_m=sl(m+1,C), the model reduces to the classical open m-body Toda chain. Using an elegant technique by Anderson (J. Math. Phys. 37 (1996) 1349) for solving this system, we integrate the Einstein equations for the model and present the metric in a Kasner-like form.
description: LaTeX, 2 ps figures
Electrical detection of the Majorana fusion rule for chiral edge vortices in a topological superconductor
Creators: name: Beenakker, C. W. J.
name: Grabsch, A.
name: Herasymenko, Y.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Majorana zero-modes bound to vortices in a topological superconductor have a non-Abelian exchange statistics expressed by a non-deterministic fusion rule: When two vortices merge they may or they may not produce an unpaired fermion with equal probability. Building on a recent proposal to inject edge vortices in a chiral mode by means of a Josephson junction, we show how the fusion rule manifests itself in an electrical measurement. A $2π$ phase shift at a pair of Josephson junctions creates a topological qubit in a state of even-even fermion parity, which is transformed by the chiral motion of the edge vortices into an equal-weight superposition of even-even and odd-odd fermion parity. Fusion of the edge vortices at a second pair of Josephson junctions results in a correlated charge transfer of zero or one electron per cycle, such that the current at each junction exhibits shot noise, but the difference of the currents is nearly noiseless.
description: 21 pages, 6 figures
Cosmological Constraints from Compact Radio Source Angular Size versus Redshift Data
Creators: name: Chen, Gang
name: Ratra, Bharat
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the Gurvits, Kellermann, & Frey compact radio source angular size versus redshift data to place constraints on cosmological model parameters in models with and without a constant or time-variable cosmological constant. The resulting constraints are consistent with but weaker than those determined using current supernova apparent magnitude versus redshift data.
description: 7 pages, 3 figures,ApJ accepted, minor changes, references added
Notions of Amalgamation for Abstract Elementary Classes
Creators: name: Cheung, Hanif
Publisher: name: Carnegie Mellon University
Year: 2025
Subjects: classificationCode: 490407
subject: Mathematical logic, set theory, lattices and universal algebra

description: Motivated by the free products of groups, the direct sums of modules, and Shelah’s (λ, 2)-goodness, we study strong amalgamation properties in Abstract Elementary Classes. Such a notion of amalgamation consists of a selection of certain amalgams for every triple M0 ≤ M1,M2, and we show that if a weak AEC K designates a unique strong amalgam to every triple M0 ≤ M1,M2, then K satisfies categoricity transfer at cardinals ≥ θ(K) + 2LS(K), where θ(K) is a cardinal associated with the notion of amalgamation. We also show that if such a unique choice does not exist, then there is some model M ∈ K having 2|M| many extensions which cannot be embedded in each other over M. Thus, for AECs which admit a notion of amalgamation, the property of having unique amalgams is a dichotomy property in the sense of Shelah’s classification theory.We present a framework of a “notion of amalgamation” for a given abstract elementary class. Abstracting from the examples of free amalgamation of groups and direct sum of modules, we isolate the axiomatic properties of absolute minimality, regularity, continuity, and admitting decomposition (Definition 2.6), which we assume throughout the paper. We also define the uniqueness property of amalgams, which intuitively states that for any triple of models there is a unique amalgam (up to isomorphism) which is “nice”. We refer to a notion satisfying all of the above as a notion of free amalgamation, and establish that when a class K has a notion of free amalgamation and is categorical in a sufficiently large cardinal, then it behaves analogously to the models of a unidimensional first order theory.
Invitation to higher local fields, Part I, section 7: Parshin's higher local class field theory in characteristic p
Creators: name: Fesenko, Ivan
Publisher: name: arXiv
Year: 2000
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 19F05, 19F99, 11-99

description: This is a review of Parshin's higher local class field theory in characteristic p.
description: For introduction and notation, see math.NT/0012131 . Published by Geometry and Topology Monographs at http://www.maths.warwick.ac.uk/gt/GTMon3/m3-I-7.abs.html
Dynamical speedup of a two-level system induced by coupling in the hierarchical environment
Creators: name: Xu, Kai
name: Zhang, Guo-Feng
name: Liu, Wu-Ming
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the dynamics of a two-level system in the presence of an overall environment composed of two layers. The first layer is just one single-mode cavity which decays to memoryless reservoir while the second layer is the two coupled single-mode cavities which decay to memoryless or memory-keeping reservoirs. In the weak-coupling regime between the qubit and the first-layer environment, our attention is focused on the effects of the coupling in the hierarchical environment on the non-Markovian speedup dynamics behavior of the system. We show that, by controlling the coupling in the second-layer environment, the multiple dynamics crossovers from Markovian to non-Markovian and from no-speedup to speedup can be realized. This results hold independently on the nature of the second-layer environment. Differently, we find that how the coupling between the two layers affects the non-Markovian speedup dynamics behavior depends on the nature of the second-layer environment.
description: 8 pages, 5 figures, Any comments are welcome!
Landau Theory of Stripe Phases in Cuprates and Nickelates
Creators: name: Zachar, Oron
name: Kivelson, S. A.
name: Emery, V. J.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We consider a Landau theory of coupled charge and spin-density wave order parameters as a simple model for the ordering that has been observed experimentally in the La_2NiO_4 and La_2CuO_4 families of doped antiferromagnets. The period of the charge-density wave is generically half that of the spin-density wave, or equivalently the charges form antiphase domain walls in the antiferromagnetic order. A sharp distinction exists between the case in which the ordering is primarily charge driven (which produces a sequence of transitions in qualitative agreement with experiment) or spin driven (which does not). We also find that stripes with non-collinear spin order (i.e. spiral phases) are possible in a region of the phase diagram where the transition is spin driven; the spiral is circular only when there is no charge order, and is otherwise elliptical with an eccentricity proportional to the magnitude of the charge order.
description: 5 pages, 1 figure, submitted to PRB
Extended Inflation with an Exponential Potential
Creators: name: Susperregi, Mikel
name: Mazumdar, Anupam
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we investigate extended inflation with an exponential potential $V(σ)= V_0 e^{-κσ}$, which provides a simple cosmological scenario where the distribution of the constants of Nature is mostly determined by $κ$. In particular, we show that this theory predicts a uniform distribution for the Planck mass at the end of inflation, for the entire ensemble of universes that undergo stochastic inflation. Eternal inflation takes place in this scenario for a broad family of initial conditions, all of which lead up to the same value of the Planck mass at the end of inflation. The predicted value of the Planck mass is consistent with the observed value within a comfortable range of values of the parameters involved.
description: 6 pages, 2 figures
title: Pre-service physical education teacher attitudes toward school-based health-related fitness testing and the professional preparation for using fitness tests through physical education teacher education programs
Creators: name: Liu, Xiaolu
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: Pre-service physical education teachers
Attitudes
Health-related fitness testing
Physical education
Teacher preparation

description: The primary purpose of this project was to explore pre-service physical education teacher (PPET) attitudes toward health-related fitness testing (HRFT). The secondary purpose was to examine HRFT preparation in physical education teacher education (PETE) programs from faculty members’ perspectives. Three studies were implemented using a parallel mixed-method approach. The first study used a survey research method to investigate American PPETs’ attitudes toward HRFT and the differences in demographic variables. The results from a total of 501 participants indicated slightly positive overall attitudes toward HRFT among American PPETs. Moreover, PPETs’ previous experience with fitness tests had significant effects on all aspects of attitudes. Senior PPETs had significantly higher scores in overall attitudes and belief in the importance of fitness tests than those for sophomore PPETs. Caucasians had a significantly lower score in the enjoyment of fitness tests than Native Americans. No gender difference was found. The second study conducted inter-country comparisons regarding PPET attitudes toward HRFT. The findings from a total of 1267 participants (N Chinese = 766; N American = 501) indicated that Chinese PPETs had more positive overall attitudes than American PPETs. Specifically, Chinese PPETs had higher scores in the cognitive component of attitude but lower scores in the affective component than their American PPETs counterparts. PPETs’ characteristics such as gender, year in university, and previous experience with fitness tests all had significant main effects on attitudes toward HRFT between Chinese and American PPETs. The third study explored PPET preparation for HRFT in PETE programs in the state of Texas, where Fitness testing is mandated by the state law. The perspectives from seven PETE faculty members through in-depth interviews, online surveys, and document analysis emerged in four themes: (a) Required courses are the primary means for preparing PPETs to use HRFT, but barriers (e.g., a lack of time devoted to HRFT content) existed; (b) PETE faculty members modeled the use of HRFT. However, cooperating teachers can negatively influence faculty’s role in HRFT preparation; (c) PPETs explored the use of HRFT in PETE programs through peer teaching and testing activities; and (d) field-based experiences in local schools for HRFT preparation were lacking. The findings of the study provide PETE programs with insights on how to better prepare PPETs for HRFT in the future.
MOESM1 of Identification and validation of reference genes for real-time quantitative RT-PCR analysis in jute
Creators: name: Md. Hossain
name: Rasel Ahmed
name: Md. Haque
name: Md. Alam
name: Md. Islam
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Marine Biology

description: Additional file 1: Supplementary Table.
Catching p via s wave with indirect detection
Creators: name: Clark, Steven J.
name: Dent, James B.
name: Dutta, Bhaskar
name: Strigari, Louis E.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: For many dark matter models, the annihilation cross section to two-body final states is difficult to probe with current experiments because the dominant annihilation channel is velocity or helicity suppressed. The inclusion of gauge boson radiation for three-body final states can lift the helicity suppression, allowing a velocity-independent cross section to dominate the annihilation process, and providing an avenue to constrain these models. Here we examine experimental constraints on dark matter that annihilates to two leptons plus a bremsstrahlung boson, $\bar{\ell}+\ell+γ/W/Z$. We consider experimental constraints on photon final states from Fermi-LAT using both diffuse photon data and data from dwarf spheroidal galaxies, and compare to the implied constraints from 21 cm measurements. Diffuse photon line searches are generally the strongest over the entire mass regime. We in particular highlight the model in which dark matter annihilates to two neutrinos and a photon, and show that these models are more strongly constrained through photon measurements than through existing neutrino bounds.
description: 23 pages, 8 figures
The Connection Between Spectral Evolution and GRB Lag
Creators: name: Kocevski, D.
name: Liang, E. P.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The observed delay in the arrival times between high and low energy photons in gamma-ray bursts (GRBs) has been shown by Norris et al. to be correlated to the absolute luminosity of a GRB. Despite the apparent importance of this spectral lag, there has yet to be a full explanation of its origin. We put forth that the lag is directly due to the evolution of the GRB spectra. In particular, as the energy at which the GRB's $νF_ν$ spectra is a maximum ($E_{pk}$) decays through the four BATSE channels, the photon flux peak in each individual channel will inevitably be offset producing what we measure as lag. We test this hypothesis by measuring the rate of $E_{pk}$ decay ($Φ_{o}$) for a sample of clean single peaked bursts with measured lag. We find a direct correlation between the decay timescale and the spectral lag, demonstrating the relationship between time delay of the low energy photons and the decay of $E_{pk}$. This implies that the luminosity of a GRB is directly related to the burst's rate of spectral evolution, which we believe begins to reveal the underlying physics behind the lag-luminosity correlation. We discuss several possible mechanisms that could cause the observed evolution and its connection to the luminosity of the burst.
description: 6 pages, 7 figures, submitted to the Astrophysical Journal
Актуальные вопросы современной экономики,Выпуск 12 2024
Creators: name: ООО "Институт развития образования и консалтинга"
Publisher: name: ООО "Институт развития образования и консалтинга"
Year: 2024

description: Актуальные вопросы современной экономики,Выпуск 12 2024
The Atomic Limit of the Boson-Fermion Model
Creators: name: Domanski, T.
name: Ranninger, J.
name: Robin, J. M.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Boson-Fermion model, describing a mixture of hybridized localized Bosons and itinerant Fermions on a lattice, is known to exhibit spectral properties for the Fermions which upon lowering the temperature develop into a three pole structure in the vicinity of the Fermi level. These spectral features go hand in hand with the opening of a pseudogap in the density of states upon approaching the critical temperature Tc when superconductivity sets in. In the present work we study this model, in the atomic limit where the three pole structure arises naturally from the local bonding, anti-bonding and non-bonding states between the Bosons and Fermions.
description: revtex, 9 pages and 6 eps figures. Submitted to Europhysics Letters
Multiple Hermite polynomials and simultaneous Gaussian quadrature
Creators: name: Van Assche, Walter
name: Vuerinckx, Anton
Publisher: name: arXiv
Year: 2018
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 33C45, 41A55, 42C05, 65D32

description: Multiple Hermite polynomials are an extension of the classical Hermite polynomials for which orthogonality conditions are imposed with respect to $r>1$ normal (Gaussian) weights $w_j(x)=e^{-x^2+c_jx}$ with different means $c_j/2$, $1 \leq j \leq r$. These polynomials have a number of properties, such as a Rodrigues formula, recurrence relations (connecting polynomials with nearest neighbor multi-indices), a differential equation, etc. The asymptotic distribution of the (scaled) zeros is investigated and an interesting new feature happens: depending on the distance between the $c_j$, $1 \leq j \leq r$, the zeros may accumulate on $s$ disjoint intervals, where $1 \leq s \leq r$. We will use the zeros of these multiple Hermite polynomials to approximate integrals of the form $\displaystyle \int_{-\infty}^{\infty} f(x) \exp(-x^2 + c_jx)\, dx$ simultaneously for $1 \leq j \leq r$ for the case $r=3$ and the situation when the zeros accumulate on three disjoint intervals. We also give some properties of the corresponding quadrature weights.
description: 18 pages, 5 figures, 1 table
On a Possibility of Phase Transitions in the Geometric Structure of Space-Time
Creators: name: Bogoslovsky, G. Yu.
name: Goenner, H. F.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is shown that space-time may be not only in a state which is described by Riemann geometry but also in states which are described by Finsler geometry. Transitions between various metric states of space-time have the meaning of phase transitions in its geometric structure. These transitions together with the evolution of each of the possible metric states make up the general picture of space-time manifold dynamics.
description: 13 pages, 2 figures, 1 table; to appear in Physics Letters A
Additional file 3: of Assessing core, e-learning, clinical and technology readiness to integrate telemedicine at public health facilities in Uganda: a health facility â based survey
Creators: name: Kiberu, Vincent
name: Scott, Richard
name: Mars, Maurice
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: Computational Biology

description: Appendix 3. Focus Group Discussion Guide with patients. (DOC 30 kb)
Invitation to higher local fields, Part I, section 8: Explicit formulas for the Hilbert symbol
Creators: name: Vostokov, Sergei V.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11S99, 19F15

description: This is a review of the vast area of explicit formulas for the (wild) Hilbert symbol (not only in the one-dimensional case but in the higher dimensional case as well). An extensive bilbiography is included.
description: Published by Geometry and Topology Monographs at http://www.maths.warwick.ac.uk/gt/GTMon3/m3-I-8.abs.html . Version 2: improvements to the historical comments
The Dynamics of Magnetism in Fe-Cr Alloys with Cr Clustering
Creators: name: Chapman, J. B. J.
name: Dudarev, S. L.
name: Ma, P. -W.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The dynamics of magnetic moments in iron-chromium alloys with different levels of Cr clustering show unusual features resulting from the fact that even in a perfect body-centred cubic structure, magnetic moments experience geometric magnetic frustration resembling that of a spin glass. Due to the long range exchange coupling and configuration randomness, magnetic moments of Cr solutes remain non-collinear at all temperatures. To characterise magnetic properties of Fe-Cr alloys, we explore the temperature dependence of magnetisation, susceptibility, Curie temperature and spin-spin correlations with spatial resolution. The static and dynamic magnetic properties are correlated with the microstructure of Fe-Cr, where magnetisation and susceptibility are determined by the size of Cr precipitates at nominal Cr concentrations. The Curie temperature is always maximised when the solute concentration of Cr in the $α$ phase is close to 5 to 6 at.\%, and the susceptibility of Fe atoms is always enhanced at the boundary between a precipitate and solid solution. Interaction between Cr and Fe stimulates magnetic disorder, lowering the effective Curie temperature. Dynamic simulation of evolution of magnetic correlations shows that the spin-spin relaxation time in Fe-Cr alloys is in the 20 to 40 ps range.
description: article consists of 16 pages with 9 figures. There is an additional Supplementary Material document
FORMATION OF HERMENEUTIC COMPETENCE OF FUTURE MUSIC EDUCATION TEACHERS IN THE ANALYSIS OF MUSIC TEXTS
Creators: name: Djalilova, Dilnozakhan
Publisher: name: Zenodo
Year: 2024

description: In this article, the formation of hermeneutic competence of future music education teachers in the analysis of music texts is studied, its necessity and pedagogical relevance today are detailed.
Additional file 2: of Assessing core, e-learning, clinical and technology readiness to integrate telemedicine at public health facilities in Uganda: a health facility â based survey
Creators: name: Kiberu, Vincent
name: Scott, Richard
name: Mars, Maurice
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Appendix 2. Technology Readiness Assessment Questionnaire. (DOC 69 kb)
Supplementary Material for "Sensor-based proximity metrics for team research"
Creators: name: Müller, Jörg
name: Meneses, Julio
name: Humbert, Anne Laure
name: Guenther, Elisabeth Anna
Publisher: name: Zenodo
Year: 2019
Subjects: wearable sensors
sociometric badges
bluetooth
infrared
team science
work group
gender diversity
organization
context

description: The collection of files provides supplementary material to the article on "Sensor-based proximity metrics for team research. A benchmarking and validation study across three organizational contexts." S1 - Supplementary Tables. Contain results of quantitative analysis in table format. S2 - Supplementary Settings. Contains the firmware settings of the Sociometric badges devices. S3 - Collection of R scripts used for the analysis. To re-run the analysis, all files need to be downloaded into the same folder. Instructions for installing required R software packages are provided in the corresponding scripts. The dataset (version 1.1.2) is available under the following link: https://doi.org/10.5281/zenodo.3446071
On integrable discretization of the inhomogeneous Ablowitz-Ladik model
Creators: name: Konotop, V. V.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: An integrable discretization of the inhomogeneous Ablowitz-Ladik model with a linear force is introduced. Conditions on parameters of the discretization which are necessary for reproducing Bloch oscillations are obtained. In particular, it is shown that the step of the discretization must be comensurable with the period of oscillations imposed by the inhomogeneous force. By proper choice of the step of the discretization the period of oscillations of a soliton in the discrete model can be made equal to an integer number of periods of oscillations in the underline continuous-time lattice.
description: 6 pages, 1 figure, LaTeX