cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
2018 New Caledonia Field Notebook of N.H. Raia
Creators: name: Raia, Natalie
Publisher: name: Zenodo
Year: 2024
Subjects: geology
subduction
New Caledonia
blueschist
eclogite
serpentinite
metamorphism
fieldwork

description: PDF scan of the field notebook of Natalie Raia (https://orcid.org/0000-0003-4939-3282). Personal information has been redacted. The documented fieldwork took place June 6-20, 2018 in the high-pressure, low-temperature exhumed subduction complex of New Caledonia as part of the dissertation work of N. Raia at the University of Minnesota. Sampling focused on collecting representative unaltered samples of blueschist and eclogite, serpentinite, and samples from alteration zones for the purposes of geochemical and petrological study of the dehydration and fluid-rock interaction history of the subduction zone. No structurally oriented samples were collected. Each sample collected during this field season has an IGSN persistent identifier; sample metadata and related datasets and publications associated with each IGSN are archived and linked in the System for Earth Sample Registration (SESAR). All IGSNs for the 2018 field season are listed as related works within the metadata for this field notebook.
Identification of Defective Two Dimensional Semiconductors by Multifractal Analysis: The Single-layer ${\rm MoS_2}$ Case Study
Creators: name: Shidpour, Reza
name: Movahed, S. M. S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Two dimensional semiconductor such as single-layer transition metal dichalcogenides (SL-TMD) have attracted most attentions as an atomically thin layer semiconductor materials. Typically, lattice point defects (sulfur vacancy) created by physical/chemical method during growth stages, have disadvantages on electronic properties. However, photoluminescence (PL) spectroscopy is conventionally used to characterize single-layer films but until now it has not been used to show the presence of defects or estimate their population due to overall similarity of general feature PL spectra. To find a feasible and robust method to determine the presence of point defects on single layer ${\rm MoS_2}$ without changing the experimental setup, Multifractal Detrended Fluctuation Analysis (MF-DFA) and Multifractal Detrended Moving Average Analysis (MF-DMA) are applied on the PL spectrum of single layer ${\rm MoS_2}$. We compare the scaling behavior of PL spectrum of pristine and defective single layer ${\rm MoS_2}$ determined by MF-DFA and MF-DMA. Our results reveal that PL spectrum has multifractal nature and different various population of point defects (sulfur vacancy) on single layer ${\rm MoS_2}$ change dramatically multifractality characteristics (Hurst, Hölder exponents) of photoluminescence spectrum. It is exhibited creating more lattice point leads to smaller fluctuations in luminescent light that it can help to design special defect structure for light emitted devices. The relative populations of point defects are almost elucidated without utilizing expensive characterization instruments such as scanning tunneling microscopy (STM) and high resolution transmission electron microscopy (HR-TEM).
description: 30 pages, 9 figures and 1 table
Interested in institutional open access policies? The Coalition of Open Access Policy Institutions can help!
Creators: name: Boston, Arthur
name: Odell, Jere
name: Ramonetti, Mona
name: Wrigley, Alainna Therese
Publisher: name: Zenodo
Year: 2021
Subjects: coapi
open access
open research

description: Open access is the free, immediate, online availability of research articles coupled with the rights to use these articles fully in the digital environment. Institutional open access policies serve as a pledge by institutional authors to make their works open access in a repository to ensure that anyone can access and use their research—to turn ideas into industries and breakthroughs into better lives. Librarians that support policy implementation connect readers from far and wide to research -- getting to the heart of what an academic library should be. Often trained in providing faculty guidance and familiar with scholarly publishing, librarians are well positioned to build the support needed to make open access initiatives successful. Creating, promoting, and implementing an institutional open access policy is no easy task, and a library should not face it alone. Fear not, be it looking at examples or best practices for forming an open access policy, successful strategies to engage faculty, workflows to streamline policy implementation, or answers to thorny questions, the Coalition of Open Access Policy Institutions (COAPI) is here to help. COAPI is an informal, free organization of 121 members across North America which provides education, advocacy, and member-to-member assistance to support institutions in developing, promoting, implementing, and assessing open access policies. This poster presents an overview of COAPI, its range of members, and the resources it provides, including an internal platform to exchange news and information about open access policies, a public toolkit built and informed by members, working groups, and community calls.
description: Presented at the 2021 ALA Annual Conference & Exhibition (Virtual).
A discrete Hubbard-Stratonovich decomposition for general, fermionic two-body interactions
Creators: name: Rombouts, S.
name: Heyde, K.
name: Jachowicz, N.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A scheme is presented to decompose the exponential of a two-body operator in a discrete sum over exponentials of one-body operators. This discrete decomposition can be used instead of the Hubbard-Stratonovich transformation in auxiliary-field quantum Monte-Carlo methods. As an illustration, the decomposition is applied to the Hubbard model, where it is equivalent to the discrete Hubbard-Stratonovich transformation introduced by Hirsch, and to the nuclear pairing Hamiltonian.
description: 8 pages, includes 2 eps figures, to appear in Phys. Lett. A
Lophophaena rioplatensis Boltovskoy 2003
Creators: name: Trubovitz, Sarah
name: Renaudie, Johan
name: Lazarus, David
name: Noble, Paula
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Chromista
Radiozoa
Polycystina
Nassellaria
Plagiacanthidae
Lophophaena
Lophophaena rioplatensis

description: Lophophaena rioplatensis Boltovskoy et al., 2003
 Lophophaena rioplatensis n. sp., Boltovskoy et al., 2003, figs. 4a–g, 5.
description: Published as part of Trubovitz, Sarah, Renaudie, Johan, Lazarus, David & Noble, Paula, 2022, Late Neogene Lophophaenidae (Nassellaria, Radiolaria) from the eastern equatorial Pacific, pp. 1-158 in Zootaxa 5160 (1) on page 75, DOI: 10.11646/zootaxa.5160.1.1, http://zenodo.org/record/10544058
2019 New Caledonia Field Notebook of N.H. Raia
Creators: name: Raia, Natalie
Publisher: name: Zenodo
Year: 2024

description: PDF scan of the field notebook of Natalie Raia (https://orcid.org/0000-0003-4939-3282). Personal information has been redacted. The documented fieldwork took place July 9-25, 2019 in the high-pressure, low-temperature exhumed subduction complex of New Caledonia as part of the dissertation work of N. Raia at the University of Minnesota. Sampling focused on collecting representative unaltered samples of blueschist and eclogite, serpentinite, and samples from alteration zones for the purposes of geochemical and petrological study of the dehydration and fluid-rock interaction history of the subduction zone. Each sample collected during this field season has an IGSN persistent identifier; sample metadata and related datasets and publications associated with each IGSN are archived and linked in the System for Earth Sample Registration (SESAR). All IGSNs for the 2019 field season are listed as related works within the metadata for this field notebook.
Fundamentals of cathodoluminescence in a STEM: The impact of sample geometry and electron beam energy on light emission of semiconductors
Creators: name: Stöger-Pollach, Michael
name: Bukvisova, Kristyna
name: schwarz, Sabine
name: Kvapil, Michal
name: Samoril, Tomas
name: Horak, Michal
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences
subject: 78-05

description: Cathodoluminescence has attracted interest in scanning transmission electron microscopy since the advent of commercial available detection systems with high efficiency, like the Gatan Vulcan or the Attolight Mönch system. In this work we discuss light emission caused by high-energy electron beams when traversing a semiconducting specimen. We find that it is impossible to directly interpret the spectrum of the emitted light to the inter-band transitions excited by the electron beam, because the Cerenkov effect and the related light guiding modes as well as transition radiation is altering the spectra. Total inner reflection and subsequent interference effects are changing the spectral shape dependent on the sample shape and geometry, sample thickness, and beam energy, respectively. A detailed study on these parameters is given using silicon and GaAs as test materials.
description: 21 pages, 16 figures,
Spectroscopy of the superconducting proximity effect in nanowires using integrated quantum dots
Creators: name: Jünger, C.
name: Baumgartner, A.
name: Delagrange, R.
name: Chevallier, D.
name: Lehmann, S.
name: Nilsson, M.
name: Dick, K. A.
name: Thelander, C.
name: Schönenberger, C.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The superconducting proximity effect has been the focus of significant research efforts over many years and has recently attracted renewed interest as the basis of topologically non-trivial states in materials with a large spin orbit interaction, with protected boundary states useful for quantum information technologies. However, spectroscopy of these states is challenging because of the limited spatial and energetic control of conventional tunnel barriers. Here, we report electronic spectroscopy measurements of the proximity gap in a semiconducting indium arsenide (InAs) nanowire (NW) segment coupled to a superconductor (SC), using a spatially separated quantum dot (QD) formed deterministically during the crystal growth. We extract the characteristic parameters describing the proximity gap which is suppressed for lower electron densities and fully developed for larger ones. This gate-tunable transition of the proximity effect can be understood as a transition from the long to the short junction regime of subgap bound states in the NW segment. Our device architecture opens up the way to systematic, unambiguous spectroscopy studies of subgap bound states, such as Majorana bound states.
Late time acceleration in Brans Dicke Cosmology
Creators: name: Sen, S.
name: Sen, A. A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this work we have investigated the possibility of having a late time accelerated phase of the universe, suggested by recent supernova observation, in the context of Brans Dicke (BD) theory with a symmetry breaking potential and a matter field. We find that a perfect fluid matter field (pressureless and with pressure) cannot support this acceleration but a fluid with dissipative pressure can drive this late time acceleration. We have also calculated some cosmological parameters in our model to match with observations.
description: 8 pages, RevTex style, 3 postscript figures, some more Comments made about the feature of the model, references included, typos corrected. Accepted for publication in Phys.Rev.D
Special cubic birational transformations of projective spaces
Creators: name: Staglianò, Giovanni
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14E05, 14E07, 14J30

description: We extend our classification of special Cremona transformations whose base locus has dimension at most three to the case when the target space is replaced by a (locally) factorial complete intersection.
description: Added some examples
Additional file 1: of A study of macro-, meso- and micro-barriers and enablers affecting extended scopes of practice: the case of rural nurse practitioners in Australia
Creators: name: Smith, Tony
name: McNeil, Karen
name: Mitchell, Rebecca
name: Boyle, Brendan
name: Ries, Nola
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Schedule of questions used for primary and secondary informant interviews. Lists of questions used in qualitative interviews with rural nurse practitioners in Australia. (DOCX 29 kb)
Lophophaena triangula Funakawa 1994
Creators: name: Trubovitz, Sarah
name: Renaudie, Johan
name: Lazarus, David
name: Noble, Paula
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Chromista
Radiozoa
Polycystina
Nassellaria
Plagiacanthidae
Lophophaena
Lophophaena triangula

description: Lophophaena triangula Funakawa, 1994
 Lophophaena triangula n. sp., Funakawa, 1994, p. 466, 468; pl. 8, figs. 31–4b.
description: Published as part of Trubovitz, Sarah, Renaudie, Johan, Lazarus, David & Noble, Paula, 2022, Late Neogene Lophophaenidae (Nassellaria, Radiolaria) from the eastern equatorial Pacific, pp. 1-158 in Zootaxa 5160 (1) on page 76, DOI: 10.11646/zootaxa.5160.1.1, http://zenodo.org/record/10544058
Plan of the fort of Bir el-Hammamat (praesidium)
Creators: name: N. Martin, J.P. Brun
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Plan of the fort of Bir el-Hammamat afetr the MAFDO survey
description: created: ?
Isotope effect on $m^*$ in high-T_c materials due to the breakdown of Migdal's theorem
Creators: name: Grimaldi, C.
name: Cappelluti, E.
name: Pietronero, L.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We show that the inclusion of effects beyond Migdal's limit in the electron-phonon interaction naturally leads to an isotope effect for the effective mass $m^{*}$ of the charge carriers even much before reaching the polaron limit. This is the situation already considered in our approach to nonadiabatic superconductivity. Such a result provides a scenario different from the polaronic one for the interpretation of the recently observed isotope effect on $m^{*}$ in YBa$_{2}$Cu$_{3}$O$_{6+x}$ and La$_{2-x}$Sr$_{x}$CuO$_{4}$.
description: 6 pages, revtex (euromacr.tex,europhys.sty); 3 postscript figures
Parameter Optimisation for the Latest Quark-Meson Coupling Energy Density Functional
Creators: name: Martinez, Kay Marie L.
name: Thomas, Anthony William
name: Stone, Jirina R.
name: Guichon, Pierre A. M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Quark--Meson--Coupling (QMC) model self-consistently relates the dynamics of the internal quark structure of a hadron to the relativistic mean fields arising in nuclear matter. It offers a natural explanation to some open questions in nuclear theory, including the origin of many-body nuclear forces and their saturation, the spin-orbit interaction and properties of hadronic matter at a wide range of densities. The QMC energy density functionals QMC-I and QMC$π$-I have been successfully applied to calculate ground state observables of finite nuclei in the Hartree-Fock + BCS approximation, as well as to predict properties of dense nuclear matter and cold non-rotating neutron stars. Here we report the latest development of the model, QMC$π$-II, extended to include higher order self-interaction of the $σ$ meson. A derivative-free optimization algorithm has been employed to determine a new set of the model parameters and their statistics, including errors and correlations. QMC$π$-II predictions for a wide range of properties of even-even nuclei across the nuclear chart, with fewer adjustable parameters, are comparable with other models. Predictions of ground state binding energies of even-even isotopes of superheavy elements with Z$>$96 are particularly encouraging.
All-optical switching in dye-doped DNA nanofibers
Creators: name: Szukalski, Adam
name: Moffa, Maria
name: Camposeo, Andrea
name: Pisignano, Dario
name: Mysliwiec, Jaroslaw
Publisher: name: arXiv
Year: 2018
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: All-optical switches are introduced which are based on deoxyribonucleic acid (DNA) in the form of electrospun fibers, where DNA is semi-intercalated with a push-pull, luminescent nonlinear pyrazoline derivative. Optical birefringence is found in the organic nanofibers, with fully reversible switching controlled through continuous-wave laser irradiation. The photoinduced signal is remarkably large, with birefringence highlighted by optically-driven refractive index anisotropy approaching 0.001. Sub-millisecond characteristic switching times are found. Integrating dye-intercalated DNA complex systems in organic nanofibers, as convenient and efficient approach to template molecular organization and controlling it by external stimuli, might open new routes for realizing optical logic gates, reconfigurable photonic networks and sensors through physically-transient biopolymer components.
description: 18 pages, 11 figures. Journal of Materials Chemistry C, 2018
Numerical study of a short-range p-spin glass model in three dimensions
Creators: name: Campellone, Matteo
name: Coluzzi, Barbara
name: Parisi, Giorgio
Publisher: name: arXiv
Year: 1998
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this work we study numerically a short range p-spin glass model in three dimensions. The behaviour of the model appears to be remarkably different from mean field predictions. In fact it shares some features typical of models with full replica-symmetry breaking (FRSB). Nevertheless, we believe that the transition that we study is intrinsically different from the FRSB and basically due to non-perturbative contributions. We study both the statics and the dynamics of the system which seem to confirm our conjectures.
description: 20 pages, 15 figures
title: Essays on the allocation, coordination, and selection of workers
Creators: name: Minni, Virginia Magda Luisa
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2023

description: This thesis studies the determinants and consequences of workers’ allocation, coordination, and selection within organizations in countries at different levels of economic development. The first chapter provides evidence of the critical role of managers in matching workers to jobs within the firm using the universe of personnel records on 200k employees over ten years of a multinational firm. Leveraging exogenous variation induced by the rotation of managers across teams, I find that successful managers cause workers to reallocate within the firm through lateral and vertical transfers. This leads to large and persistent gains in workers’ career progression and productivity. The results imply that the visible hands of managers match workers’ specific skills to specialized jobs, leading to an improvement in the productivity of existing workers that outlasts the managers’ time at the firm. The second chapter continues the study of leadership in a very different context: Myanmar’s labor movement. We conduct multiple field experiments by collaborating with a confederation of labor unions as it mobilizes garment workers in the run-up to a national minimum wage negotiation. First, we document that union leaders differ from the other workers along several traits that psychologists and sociologists have associated with the ability to influence collective outcomes. Second, by randomly embedding leaders in group discussions, we find that they help coordinate workers’ views to build consensus around the unions’ preferred minimum wage levels. Third, by conducting a mobilization experiment that features collective action problems, we show that leaders play a coordinating role also for workers’ actions. The third chapter starts with the fact that women’s labor force participation varies widely across countries at every level of development. We ask how this affects gender diversity among employees, gender gaps, and firm productivity using five years of personnel records on over 100K employees of a multinational firm combined with the female to male labor force participation rate in the 101 countries where the firm operates. Structural estimates show that in a counterfactual world with no gender-specific barriers to labor force participation, firm productivity would be 32% higher for the same level of employment and the same wage bill. The findings suggest that selection is a powerful lens to understand the link between diversity and productivity.
Spin liquid ground state in a two dimensional non-frustrated spin model
Creators: name: Santoro, G.
name: Sorella, S.
name: Guidoni, L.
name: Parola, A.
name: Tosatti, E.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider an exchange model describing two isotropic spin-1/2 Heisenberg antiferromagnets coupled by a quartic term on the square lattice. The model is relevant for systems with orbital degeneracy and strong electron-vibron coupling in the large Hubbard repulsion limit, and is known to show a spin-Peierls-like dimerization in one dimension. In two dimensions we calculate energy gaps, susceptibilities, and correlation functions with a Green's Function Monte Carlo. We find a finite spin gap and no evidence of any kind of order. We conclude that the ground state is, most likely, a spin liquid of resonating valence bonds.
description: 4 pages, 4 figures, Revtex
Ultrafast cryptography with indefinitely switchable optical nanoantennas
Creators: name: Ma, Pujuan
name: Gao, Lei
name: Ginzburg, Pavel
name: Noskov, Roman E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Bistability is widely exploited to demonstrate all-optical signal processing and light-based computing. The standard paradigm of switching between two steady states corresponding to '0" and '1" bits is based on the rule that a transition occurs when the signal pulse intensity overcomes the bistability threshold, and otherwise, the system remains in the initial state. Here, we break with this concept by revealing the phenomenon of indefinite switching in which the eventual steady state of a resonant bistable system is transformed into a nontrivial function of signal pulse parameters for moderately intense signal pulses. The essential nonlinearity of the indefinite switching allows realization of well-protected cryptographic algorithms with a single bistable element in contrast to software-assisted cryptographic protocols that require thousands of logic gates. As a proof of concept, we demonstrate stream deciphering of the word 'enigma' by means of an indefinitely switchable optical nanoantenna. An extremely high bitrate ranging from ~0.1 to 1 terabits per second and a small size make such systems promising as basic elements for all-optical cryptographic architectures.
description: Light: Science & Applications, to appear
Similarity Solutions For The Complex Burgers' Hierarchy
Creators: name: Halder, Amlan K
name: Paliathanasis, A.
name: Rangasamy, S.
name: Leach, Pgl
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 34A05, 34A34, 34C14, 35C07, 22E60

description: A detailed analysis of the invariant point transformations for the first four partial differential equations which belong to the Complex Burgers` Hierarchy is performed. Moreover, a detailed application of the reduction process through the Lie point symmetries is presented while we construct similarity solutions. We conclude that the differential equations of our consideration are reduced to first-order equations such as the Abel, Riccati and to a linearisable second-order differential equation by using similarity transformations.
description: 12 PAGES, 1 FIGURES, Accepted for publication in Zeitschrift f\"ur Naturforschung A (ZNA)- A Journal of Physical Sciences
Energy of a Conformal Scalar Dyon Black Hole
Creators: name: Radinschi, Irina
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We obtain the energy of a conformal scalar dyon black hole (CSD) by using the energy-momentum complexes of Tolman and Møller. The total gravitational energy is given by the CSD charge in the both prescriptions.
description: 3 pages, no figures
A new view of the corona of classical T Tauri stars: Effects of flaring activity in circumstellar disks
Creators: name: Colombo, Salvatore
name: Orlando, Salvatore
name: Peres, Giovanni
name: Reale, Fabio
name: Argiroffi, Costanza
name: Bonito, Rosaria
name: Ibgui, Laurent
name: Stehlé, Chantal
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Classical T Tauri stars (CTTSs) are young low-mass stellar objects accreting mass from their circumstellar disks. They are characterized by high levels of coronal activity as revealed by X-ray observations. This activity may affect the disk stability and the circumstellar environment. Here we investigate if an intense coronal activity due to flares occurring close to the accretion disk may perturb the inner disk stability, disrupt the inner part of the disk and, possibly, trigger accretion phenomena with rates comparable with those observed. We model a magnetized protostar surrounded by an accretion disk through 3D magnetohydrodinamic simulations. We explore cases characterized by a dipole plus an octupole stellar magnetic field configuration and different density of the disk or by different levels of flaring activity. As a result of the simulated intense flaring activity, we observe the formation of several loops that link the star to the disk; all these loops build up a hot extended corona with an X-ray luminosity comparable with typical values observed in CTTSs. The intense flaring activity close to the disk can strongly perturb the disk stability. The flares trigger overpressure waves which travel through the disk and modify its configuration. Accretion funnels may be triggered by the flaring activity, thus contributing to the mass accretion rate of the star. Accretion rates synthesized from the simulations are in a range between 10^-10 and 10^-9M_sun yr^-1 The accretion columns can be perturbed by the flares and they can interact with each other, possibly merging together in larger streams. As a result, the accretion pattern can be rather complex: the streams are highly inhomogeneous, with a complex density structure, and clumped
description: 12 pages, 9 figures
Harmonic and Trace Inequalities in Lipschitz Domains
Creators: name: Touhami, Soumia
name: Chaira, Abdellatif
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47A30, 47J20

description: We prove boundary inequalities in arbitrary bounded Lipschitz domains on the trace space of Sobolev spaces. For that, we make use of the trace operator, its Moore-Penrose inverse, and of a special inner product. We show that our trace inequalities are particularly useful to prove harmonic inequalities, which serve as powerful tools to characterize the harmonic functions on Sobolev spaces of non-integer order.
description: This is a preprint of a paper accepted 15-Nov-2018 and whose final and definite form is a book chapter at Springer New York, on the topic of 'Frontiers in Functional Equations and Analytic Inequalities', Edited by G. Anastassiou and J. Rassias
Evolution of the low-frequency spin dynamics in ferromagnetic manganites
Creators: name: Fernandez-Baca, J. A.
name: Dai, P.
name: Hwang, H. Y.
name: Cheong, S-W.
name: Kloc, C.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Elastic and inelastic neutron scattering was used to study two ferromagnetic manganites A$_{1-x}$B$_{x}$MnO$_3$ (x $\approx$ 0.3) with $T_c$=197.9 K and 300.9 K. The spin dynamical behavior of these is similar at low temperatures, but drastically different at temperatures around $T_c$. While the formation of spin clusters of size ($\sim20$ Å) dominates the spin dynamics of the 197.9 K sample close to $T_c$, the paramagnetic to ferromagnetic transition for the 300.9 K sample is more conventional. These results, combined with seemingly inconsistent earlier reports, reveal clear systematics in the spin dynamics of the manganites.
description: zipped RevTeX file (7 pages) and 4 postscript figures
Gamma-Ray Emission from Molecular Clouds Generated by Penetrating Cosmic Rays
Creators: name: Dogiel, V. A.
name: Chernyshov, D. O.
name: Ivlev, A. V.
name: Malyshev, D.
name: Strong, A. W.
name: Cheng, K. S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We analyze the processes governing cosmic-ray (CR) penetration into molecular clouds and the resulting generation of gamma-ray emission. The density of CRs inside a cloud is depleted at lower energies due to the self-excited MHD turbulence. The depletion depends on the effective gas column density ("size") of the cloud. We consider two different environments where the depletion effect is expected to be observed. For the Central Molecular Zone, the expected range of CR energy depletion is $E\lesssim 10$ GeV, leading to the depletion of gamma-ray flux below $E_γ\approx 2$ GeV. This effect can be important for the interpretation of the GeV gamma-ray excess in the Galactic Center, which has been revealed from the standard model of CR propagation (assuming the CR spectrum inside a cloud to be equal to the interstellar spectrum). Furthermore, recent observations of some local molecular clouds suggest the depletion of the gamma-ray emission, indicating possible self-modulation of the penetrating low-energy CRs.
description: 10 pages, 5 figures, accepted for publication in ApJ
Nonequilibrium spin distribution in single-electron transistor
Creators: name: Korotkov, Alexander N.
name: Safarov, V. I.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Single-electron transistor with ferromagnetic outer electrodes and nonmagnetic island is studied theoretically. Nonequilibrium electron spin distribution in the island is caused by tunneling current. The dependencies of the magnetoresistance ratio $δ$ on the bias and gate voltages show the dips which are directly related to the induced separation of Fermi levels for electrons with different spins. Inside a dip $δ$ can become negative.
description: 11 pages, 2 eps figures
Generating Albums with SampleRNN to Imitate Metal, Rock, and Punk Bands
Creators: name: Carr, CJ
name: Zukowski, Zack
Publisher: name: arXiv
Year: 2018
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This early example of neural synthesis is a proof-of-concept for how machine learning can drive new types of music software. Creating music can be as simple as specifying a set of music influences on which a model trains. We demonstrate a method for generating albums that imitate bands in experimental music genres previously unrealized by traditional synthesis techniques (e.g. additive, subtractive, FM, granular, concatenative). Raw audio is generated autoregressively in the time-domain using an unconditional SampleRNN. We create six albums this way. Artwork and song titles are also generated using materials from the original artists' back catalog as training data. We try a fully-automated method and a human-curated method. We discuss its potential for machine-assisted production.
description: 3 pages
Scaling of locally averaged energy dissipation and enstrophy density in isotropic turbulence
Creators: name: Iyer, Kartik P
name: Schumacher, Jörg
name: Sreenivasan, Katepalli R
name: Yeung, P K
Publisher: name: arXiv
Year: 2018
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Using direct numerical simulations of isotropic turbulence in periodic cubes of several sizes, the largest being $8192^3$ yielding a microscale Reynolds number of $1300$, we study the properties of pressure Laplacian to understand differences in the inertial range scaling of enstrophy density and energy dissipation. Even though the pressure Laplacian is the difference between two highly intermittent quantities, it is non-intermittent and essentially follows Kolmogorov scaling, at least for low-order moments. Using this property, we show that the scaling exponents of local averages of dissipation and enstrophy remain unequal at all finite Reynolds numbers, though there appears to be a \textit{very} weak tendency for this inequality to decrease with increasing Reynolds number.
description: 8 pages, 6 figures
High-temperature superconductivity in doped antiferromagnets
Creators: name: Psaltakis, Gregory C.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: In the context of an effective model for doped antiferromagnets, whereby the charge carriers are treated as hard-core bosons, we demonstrate that the ground state energy close to half-filling is an even periodic function of the external magnetic flux threading the square lattice in an Aharonov-Bohm geometry. The period is equal to the flux quantum $Φ_{0}=2π\hbar c/q$ entering the Peierls phase factor of the hopping matrix elements. Thus flux quantization and a concomitant finite value of superfluid weight D_{s} occur along with metallic antiferromagnetism. We argue that the charge q in the associated flux quantum might be set equal to 2e. The superconducting transition temperature T_{c} is related to D_{s} linearly, in accordance to the generic Kosterlitz-Thouless type of transition in a two-dimensional system, signalling the coherence of the phase fluctuations of the condensate. The calculated dependence of T_{c} on hole concentration is qualitatively similar to that observed in the high-temperature superconducting cuprates.
description: 5 pages, REVTEX file (2 Postscript figures). Proc. of 1st Euroconference on "Anomalous Complex Superconductors". To appear in Physica C (1999)
A cholera mathematical model with vaccination and the biggest outbreak of world's history
Creators: name: Lemos-Paiao, Ana P.
name: Silva, Cristiana J.
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Biological sciences
subject: FOS: Mathematics
subject: 34C60, 92D30

description: We propose and analyse a mathematical model for cholera considering vaccination. We show that the model is epidemiologically and mathematically well posed and prove the existence and uniqueness of disease-free and endemic equilibrium points. The basic reproduction number is determined and the local asymptotic stability of equilibria is studied. The biggest cholera outbreak of world's history began on 27th April 2017, in Yemen. Between 27th April 2017 and 15th April 2018 there were 2275 deaths due to this epidemic. A vaccination campaign began on 6th May 2018 and ended on 15th May 2018. We show that our model is able to describe well this outbreak. Moreover, we prove that the number of infected individuals would have been much lower provided the vaccination campaign had begun earlier.
description: This is a preprint of a paper whose final and definite form is with 'AIMS Mathematics', available in open access from [http://www.aimspress.com/journal/Math]. Submitted 7-July-2018; Revised 14-Sept-2018; Accepted 12-Oct-2018. arXiv admin note: substantial text overlap with arXiv:1611.02195
Winter Road Surface Condition Recognition Using A Pretrained Deep Convolutional Network
Creators: name: Pan, Guangyuan
name: Fu, Liping
name: Yu, Ruifan
name: Muresan, Matthew
Publisher: name: arXiv
Year: 2018
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper investigates the application of the latest machine learning technique deep neural networks for classifying road surface conditions (RSC) based on images from smartphones. Traditional machine learning techniques such as support vector machine (SVM) and random forests (RF) have been attempted in literature; however, their classification performance has been less than desirable due to challenges associated with image noises caused by sunlight glare and residual salts. A deep learning model based on convolutional neural network (CNN) is proposed and evaluated for its potential to address these challenges for improved classification accuracy. In the proposed approach we introduce the idea of applying an existing CNN model that has been pre-trained using millions of images with proven high recognition accuracy. The model is extended with two additional fully-connected layers of neurons for learning the specific features of the RSC images. The whole model is then trained with a low learning rate for fine-tuning by using a small set of RSC images. Results show that the proposed model has the highest classification performance in comparison to the traditional machine learning techniques. The testing accuracy with different training dataset sizes is also analyzed, showing the potential of achieving much higher accuracy with a larger training dataset.
Central Matter Distributions in Rich Clusters of Galaxies from z~0 to z~0.5
Creators: name: Adami, C.
name: Mazure, A.
name: Ulmer, M. P.
name: Savine, C.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have analyzed the galaxy number density and luminosity density profiles of rich clusters of galaxies from redshifts z=0 to z=0.5. We show that the luminosity profile computed with bright galaxies is significantly cusped in the center of the clusters, whatever the redshift. This is in agreement with the dark matter profiles predicted by numerical simulations. The galaxy number density profile for the bright galaxies is fitted equally well with a core model or a cusped model. In contrast, the luminosity and the galaxy number density profiles of the fainter galaxies are significantly better fitted by a core rather than a cusp model. We did not detect any statistically significant different fits when applied to data in range from z=0 to z=0.5. The difference in profile between faint and bright galaxies may be due to the rapid (relative to the age of the universe at z=0 versus z=0.5) destruction of the faint galaxies by tidal forces and merging events in the denser central regions of the clusters. This process could erase the cusp by turning faint galaxies into diffuse light. In this case, the galaxies (with a cusp visible in the bright galaxy number density and mainly in luminosity profiles) would trace the total mass distribution.
description: 8 pages, 3 figures, accepted in A&A
Knowledge, perceptions, and attitudes of health professionals towards baby led weaning: a scoping review
Creators: name: Loureiro, Fernanda
name: Fernandes, Sónia
name: de Oliveira, Paula
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Pediatric Nursing
subject: Family Practice Nursing
subject: Medicine and Health Sciences
subject: Maternal, Child Health and Neonatal Nursing
subject: Public Health and Community Nursing
subject: Nursing
subject: FOS: Health sciences

description: Scoping review according to PRISMA on knowledge, perceptions, and attitudes of health professionals towards baby led weaning.
Fermion-current basis and correlation functions for the integrable spin 1 chain
Creators: name: Babenko, C.
name: Smirnov, F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We use the fermion-current basis in the space of local operators for the computation of the expectation values for the integrable spin chain of spins 1. Our main tool consists in expressing a given local operators in the fermion-current basis. For this we use the same method as in the spin 1/2 case which is based on the arbitrariness of the Matsubara data.
description: 12 pages
Additional file 1: of Barriers to using new needles encountered by rural Appalachian people who inject drugs: implications for needle exchange
Creators: name: Davis, Stephen
name: Alfgeir Kristjansson
name: Davidov, Danielle
name: Zullig, Keith
name: Baus, Adam
name: Fisher, Melanie
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Molecular Biology
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Computational Biology

description: Barriers to Using New Needles Questionnaire. (DOCX 24 kb)
General Electric-Magnetic decomposition of fields, positivity and Rainich-like conditions
Creators: name: Senovilla, Jose M M
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show how to generalize the classical electric-magnetic decomposition of the Maxwell or the Weyl tensors to arbitrary fields described by tensors of any rank in general $n$-dimensional spacetimes of Lorentzian signature. The properties and applications of this decomposition are reviewed. In particular, the definition of tensors quadratic in the original fields and with important positivity properties is given. These tensors are usually called "super-energy" (s-e) tensors, they include the traditional energy-momentum, Bel and Bel-Robinson tensors, and satisfy the so-called Dominant Property, which is a straightforward generalization of the classical dominant energy condition satisfied by well-behaved energy-momentum tensors. We prove that, in fact, any tensor satisfying the dominant property can be decomposed as a finite sum of the s-e tensors. Some remarks about the conservation laws derivable from s-e tensors, with some explicit examples, are presented. Finally, we will show how our results can be used to provide adequate generalizations of the Rainich conditions in general dimension and for any physical field.
description: 20 pages, no figures, plenary talks given at the Spanish Relativity Meeting 2000, to be publisehd in the Proceedings of ERE-00 Some minor errors corrected, one formula and acknowledgements added
On Constraining the Growth History of Massive Black Holes via Their Distribution on the Spin-Mass Plane
Creators: name: Zhang, Xiaoxia
name: Lu, Youjun
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The spin distribution of massive black holes (MBHs) contains rich information on the MBH growth history. In this paper, we investigate the spin evolution of MBHs by assuming that each MBH experiences two-phase accretion, with an initial phase of coherent-accretion via either the standard thin disc or super-Eddington disc, followed by a chaotic-accretion phase composed of many episodes with different disc orientations. If the chaotic-phase is significant to the growth of an MBH, the MBH spin quickly reaches the maximum value because of the initial coherent-accretion, then changes to a quasi-equilibrium state and fluctuates around a value mainly determined by the mean ratio of the disc to the MBH mass ($M_{\bullet}$) in the chaotic-accretion episodes, and further declines due to late chaotic-accretion if $M_\bullet \gtrsim (1-3) \times 10^8 M_\odot$. The turning point to this decline is determined by the equality of the disc warp radius and disc size. By matching the currently available spin measurements with mock samples generated from the two-phase model(s) on the spin-mass plane, we find that MBHs must experience significant chaotic-accretion phase with many episodes and the mass accreted in each episode is roughly 1-2 percent of M_bh or less. MBHs with $M_{\bullet}\gtrsim 10^8 M_{\odot}$ appear to have intermediate-to-high spins ($\sim 0.5-1$), while lighter MBHs have higher spins ($\gtrsim 0.8$). The best matches also infer that (1) the radiative efficiencies ($η$) of those active MBHs appear to slightly decrease with $M_{\bullet}$; however, the correlation between $η$ and $M_{\bullet}$, if any, is weak; (2) the mean radiative efficiency of active MBHs is $ \sim 0.09-0.15$, consistent with the global constraints.
description: 19 pages, 17 figures; to appear in the Astrophysical Journal
Image sonification (Shape, Color and Texture)
Ηχοποίηση Εικόνας (Σχήμα, Χρώμα, Υφή)
Creators: name: (:Unkn) Unknown
Publisher: name: National Technological University of Athens
Year: 2014
Subjects: Image sonification
Auditory display
Perception
Sound design
Visually impaired
Data mapping

description: σ.
description: This diploma thesis deals with image soni cation and addresses the most common problems found in the eld which are dealing with the soni cation of shape, color and texture. While most approaches are based on user interaction, we have achieved to establish a one-toone relationship between the image and the soni ed result. By using perceptually meaningful mappings, the properties of an image are directly re ected to the audio domain in a very predictable way. If the task is to convey information, the listener can draw conclusions about the image by decoding the soni ed result. Otherwise, using image soni cation as a tool to aid sound design, can yield many interesting audio results that are hard to achieve by using only the existing audio based techniques.