cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Club de Lecture du Capital (CLC)
Creators: name: Blumer, Stéphane
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 440107
subject: Social and cultural anthropology
classificationCode: 440404
subject: Political economy and social change

description: The conference introduces the PhD workshop entitled "CLC - Club de Lecture du Capital". The aim of the session is to introduce the workshop's members’ expectations and desires, as well as to explain the format of the sessions, organised by Ana Maria Guerrero and Stéphane Blumer, both PhD candidates in anthropology at the EHESS (iiAC/LAIOS). The plan is to approach the text from an academic perspective and to avoid falling into commonplaces of traditional epistemological frameworks. The aim of the workshop is to create a space for experimental methodology, starting with a direct reading of the text. The session begins with a tour de table to hear each participant's background, expectations, and objectives for the group. Finally, a brief historical contextualization to the book is provided. It is questioned how to approach the concepts and models in Marx's Capital Volume 1 without invoking ideological differences that would hinder a new reading of the book. They suggest preserving critical analysis of the dominant economic system while avoiding reproducing discourse or ideologies that perpetuate the same problems. The paper acknowledges the vast array of Marxist interpretations and suggests focusing on the criticism of capitalism at the core of Capital, using dialectic methodology to update the models and examine contemporary alternatives to the current discriminatory system.
Club de Lecture du Capital (CLC)
Creators: name: Blumer, Stéphane
name: Guerrero, Ana Maria
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 440107
subject: Social and cultural anthropology
classificationCode: 440404
subject: Political economy and social change

description: The conference introduces the PhD workshop entitled "CLC - Club de Lecture du Capital". The aim of the session is to introduce the workshop's members’ expectations and desires, as well as to explain the format of the sessions, organised by Ana Maria Guerrero and Stéphane Blumer, both PhD candidates in anthropology at the EHESS (iiAC/LAIOS). The plan is to approach the text from an academic perspective and to avoid falling into commonplaces of traditional epistemological frameworks. The aim of the workshop is to create a space for experimental methodology, starting with a direct reading of the text. The session begins with a tour de table to hear each participant's background, expectations, and objectives for the group. Finally, a brief historical contextualization to the book is provided. It is questioned how to approach the concepts and models in Marx's Capital Volume 1 without invoking ideological differences that would hinder a new reading of the book. They suggest preserving critical analysis of the dominant economic system while avoiding reproducing discourse or ideologies that perpetuate the same problems. The paper acknowledges the vast array of Marxist interpretations and suggests focusing on the criticism of capitalism at the core of Capital, using dialectic methodology to update the models and examine contemporary alternatives to the current discriminatory system.
Generating 10~40MeV high quality monoenergetic electron beams using a 5TW 60fs laser at Tsinghua University
Creators: name: Hua, J. F.
name: Yan, L. X.
name: Pai, C. H.
name: Zhang, C. J.
name: Li, F.
name: Wan, Y.
name: Wu, Y. P.
name: Xu, X. L.
name: Du, Y. C.
name: Huang, W. H.
name: Chen, H. B.
name: Tang, C. X.
name: Lu, W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: A unique facility for laser plasma physics and advanced accelerator research has been built recently at Tsinghua Universtiy. This system is based on Tsinghua Thomson scattering X-ray source (TTX), which combining an ultrafast TW laser with a synchronized 45MeV high brightness linac. In our recent laser wakefield acceleration experiments, we have obtained 10~40MeV high quality monoenergetic electron beams by running the laser at 5TW peak power. Under certain conditions, very low relative energy spread of a few percent can be achieved. Absolute charge calibration for three different scintillating screens has also been performed using the linac system.
Cataclysmic Variables from the Catalina Real-time Transient Survey
Creators: name: Drake, A. J.
name: Gaensicke, B. T.
name: Djorgovski, S. G.
name: Wils, P.
name: Mahabal, A. A.
name: Graham, M. J.
name: Yang, T-C.
name: Williams, R.
name: Catelan, M.
name: Prieto, J. L.
name: Donalek, C.
name: Larson, S.
name: Christensen, E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present 855 cataclysmic variable candidates detected by the Catalina Real-time Transient Survey (CRTS) of which at least 137 have been spectroscopically confirmed and 705 are new discoveries. The sources were identified from the analysis of five years of data, and come from an area covering three quarters of the sky. We study the amplitude distribution of the dwarf novae CVs discovered by CRTS during outburst, and find that in quiescence they are typically two magnitudes fainter compared to the spectroscopic CV sample identified by SDSS. However, almost all CRTS CVs in the SDSS footprint have ugriz photometry. We analyse the spatial distribution of the CVs and find evidence that many of the systems lie at scale heights beyond those expected for a Galactic thin disc population. We compare the outburst rates of newly discovered CRTS CVs with the previously known CV population, and find no evidence for a difference between them. However, we find that significant evidence for a systematic difference in orbital period distribution. We discuss the CVs found below the orbital period minimum and argue that many more are yet to be identified among the full CRTS CV sample. We cross-match the CVs with archival X-ray catalogs and find that most of the systems are dwarf novae rather than magnetic CVs.
description: 15 pages, 17 figures, accepted MNRAS
Quasi-phase-matching high-harmonic radiation using chirped THz pulses
Creators: name: Kovács, Katalin
name: Balogh, Emeric
name: Hebling, János
name: Tosa, Valer
name: Varjú, Katalin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: High-order harmonic generation in the presence of a chirped THz pulse is investigated numerically with a complete 3D non-adiabatic model. The assisting THz pulse illuminates the HHG gas cell laterally inducing quasi-phase-matching. We demonstrate that it is possible to compensate the phase mismatch during propagation and extend the macroscopic cutoff of a propagated strong IR pulse to the single-dipole cutoff. We obtain two orders of magnitude increase in the harmonic efficiency of cutoff harmonics ($\approx$170 eV) using a THz pulse of constant wavelength, and a further factor of 3 enhancement when a chirped THz pulse is used.
When is a persistent identifier not persistent? Or an identifier?
Publisher: name: British Library
Year: 2020
Subjects: DOI
ISBN
metadata
PIDs

description: Ever wondered what that bar code on the back of every book is? It’s an ISBN: an International Standard Book Number. Every modern book published has an ISBN, which uniquely identifies that book, and anyone publishing a book can get an ISBN for it whether an individual or a huge publishing house. It’s a little more complex than that in practice but generally speaking it’s 1 book, 1 ISBN. Right? Right.
Qualitative analysis of collapsing isotropic fluid spacetimes
Creators: name: Giambò, Roberto
name: Magli, Giulio
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The structure of the Einstein field equations describing the gravitational collapse of spherically symmetric isotropic fluids is analyzed here for general equations of state. A suitable system of coordinates is constructed which allows us, under a hypothesis of Taylor-expandability with respect to one of the coordinates, to approach the problem of the nature of the final state without knowing explicitely the metric. The method is applied to investigate the singularities of linear barotropic perfect fluids solutions and to a family of accelerating fluids.
description: 16 pages; to appear on Class. Quantum Grav
SDSS superclusters: morphology and galaxy content
Creators: name: Einasto, M.
name: Lietzen, H.
name: Tempel, E.
name: Gramann, M.
name: Liivamagi, L. J.
name: Einasto, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We compare the galaxy populations in superclusters of different morphology in the nearby Universe (180 < d < 270 Mpc) to see whether the inner structure and overall morphology of superclusters are important in shaping galaxy properties in superclusters. Supercluster morphology has been found with Minkowski functionals. We analyse the probability density distributions of colours, morphological types, stellar masses, star formation rates (SFR) of galaxies, and the peculiar velocities of the main galaxies in groups in superclusters of filament and spider types, and in the field. We show that the fraction of red, early-type, low SFR galaxies in filament-type superclusters is higher than in spider-type superclusters; in low-density global environments their fraction is lower than in superclusters. In all environments the fraction of red, high stellar mass, and low SFR galaxies in rich groups is higher than in poor groups. In superclusters of spider morphology red, high SFR galaxies have higher stellar masses than in filament-type superclusters. Groups of equal richness host galaxies with larger stellar masses, a larger fraction of early-type and red galaxies, and a higher fraction of low SFR galaxies, if they are located in superclusters of filament morphology. The peculiar velocities of the main galaxies in groups from superclusters of filament morphology are higher than in those of spider morphology. Groups with higher peculiar velocities of their main galaxies in filament-type superclusters are located in higher density environment than those with low peculiar velocities. There are significant differences between galaxy populations of the individual richest superclusters. Therefore both local (group) and global (supercluster) environments and even supercluster morphology play an important role in the formation and evolution of galaxies.
description: Comments: 14 pages, 11 figures, accepted for publication in Astronomy and Astrophysics
Core-envelope haloes in scalar field dark matter with repulsive self-interaction : fluid dynamics beyond the de Broglie wavelength
Creators: name: Dawoodbhoy, Taha Aliasger
name: 0000-0002-4760-7016
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Cosmology
Dark matter
Astroparticle physics
Galaxies
Haloes
Hydrodynamics

description: Scalar Field Dark Matter (SFDM) comprised of ultralight bosons has attracted great interest as an alternative to standard, collisionless Cold Dark Matter (CDM) because of its novel structure-formation dynamics, described by the coupled Schrödinger-Poisson equations. In the free-field (“fuzzy”) limit of SFDM (FDM), structure is inhibited below the de Broglie wavelength, but resembles CDM on larger scales. Virialized haloes have “solitonic” cores of radius ~ [italic lambda] [subscript deB], surrounded by CDM-like envelopes. When a strong enough repulsive self-interaction (SI) is also present, structure can be inhibited below a second length scale, [italic lambda] [subscript SI], with [italic lambda] [subscript SI] > [italic lambda] [subscript deB] --called the Thomas-Fermi (TF) regime. FDM dynamics differs from CDM because of quantum pressure, and SFDM-TF differs further by adding SI pressure. In the small-[italic lambda] [subscript deB] limit, however, we can model all three by fluid conservation equations for a compressible, γ = 5/3 ideal gas, with ideal gas pressure sourced by internal velocity dispersion and, for the TF regime, an added SI pressure, P [subscript SI] [is proportional to] p². We use these fluid equations to simulate halo formation from gravitational collapse in 1D, spherical symmetry, demonstrating for the first time that SFDM-TF haloes form with cores the size of R [subscript TF], the radius of an SI-pressure-supported (n = 1)- polytrope, surrounded by CDM-like envelopes. In comparison with rotation curves of dwarf galaxies in the local Universe, SFDM-TF haloes pass the [“too-big-to-fail” + “cusp-core”]-test if R [subscript TF] [is greater than about] 1 kpc
Importance of anti-Plesiomonas antibody in the protection of rats against infection by Plesiomonas Shigelloides
Creators: name: Ifeoma Enweani
Publisher: name: figshare
Year: 2020
Subjects: subject: 60599 Microbiology not elsewhere classified
subject: FOS: Biological sciences

description: Rabbit anti-antibody raised against Pleiomonas shigelloides infections using standard immunological procedures. Ten (50%) of 20n rats died when only P. shigelloides was injected while 2(10%) died (p<0.05) following injection of another group of 20 rats with P. shigelloides 24 hours after administration of rabbit-Plesiomonas anti-antibody. In another scheme, 14(70%) of 20 rats died when P. shigelloides and colloidal carbon particles (CCP) were administered while administration of rabbit –Plesiomonas anti-antibody. No death was recorded for control rats, which received only CCP. This study highlights a novel approach in the management or prevention of P. shigelloides infection in our environment
Ergodicity of the Spin-Boson Model for arbitrary coupling strength
Creators: name: Koenenberg, Martin
name: Merkli, Marco
name: Song, Haifeng
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We prove that the spin-boson system is ergodic, for arbitrary strengths of the coupling between the spin and the boson bath, provided the spin tunneling matrix element is small enough.
Supplementary document for Enhanced Surface Second Harmonic Generation in Nanolaminates - 6298070.pdf
Creators: name: Abtahi, Fatemeh
name: Paul, Pallabi
name: Beer, Sebastian
name: Kuppadakkath, Athira
name: Pakhomov, Anton
name: Szeghalmi, Adriana
name: Nolte, Stefan
name: Setzpfandt, Frank
name: Eilenberger, Falk
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: 484893
Carrier type modulation in current annealed graphene layers
Creators: name: Kumar, Pawan
name: Kumar, Amit
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on the electrical properties of current annealed graphene and few layer graphene devices. It is observed that current annealing for several hours results the n-type doping in the graphene layers. After current annealing Dirac point start to shift toward positive gate voltage and saturate at some fixed gate voltage. N-type conduction in current annealed graphene layers is caused by the charge trapping in oxide layer during current annealing and recovery of charge neutrality point with time span is understood due to the de-trapping of charge with time.
description: Accepted in Applied Physics Letters
Exact Reconstruction of Spatially Undersampled Signals in Evolutionary Systems
Creators: name: Aldroubi, Akram
name: Davis, Jacqueline
name: Krishtal, Ilya
Publisher: name: arXiv
Year: 2013
Subjects: subject: Other Computer Science (cs.OH)
subject: Functional Analysis (math.FA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We consider the problem of spatiotemporal sampling in which an initial state $f$ of an evolution process $f_t=A_tf$ is to be recovered from a combined set of coarse samples from varying time levels $\{t_1,\dots,t_N\}$. This new way of sampling, which we call dynamical sampling, differs from standard sampling since at any fixed time $t_i$ there are not enough samples to recover the function $f$ or the state $f_{t_i}$. Although dynamical sampling is an inverse problem, it differs from the typical inverse problems in which $f$ is to be recovered from $A_Tf$ for a single time $T$. In this paper, we consider signals that are modeled by $\ell^2(\mathbb Z)$ or a shift invariant space $V\subset L^2(\mathbb R)$.
Search for [CII] emission in z=6.5-11 star-forming galaxies
Creators: name: González-López, Jorge
name: Riechers, Dominik A.
name: Decarli, Roberto
name: Walter, Fabian
name: Vallini, Livia
name: Neri, Roberto
name: Bertoldi, Frank
name: Bolatto, Alberto D.
name: Carilli, Christopher L.
name: Cox, Pierre
name: da Cunha, Elisabete
name: Ferrara, Andrea
name: Gallerani, Simona
name: Infante, Leopoldo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the search for the [CII] emission line in three $z>6.5$ Lyman-alpha emitters (LAEs) and one J-Dropout galaxy using the Combined Array for Research in Millimeter-wave Astronomy (CARMA) and the Plateau de Bure Interferometer (PdBI). We observed three bright $z\sim6.5-7$ LAEs discovered in the SUBARU deep field (SDF) and the Multiple Imaged lensed $z\sim 11$ galaxy candidate found behind the galaxy cluster MACSJ0647.7+7015. For the LAEs IOK-1 ($z=6.965$), SDF J132415.7+273058 ($z=6.541$) and SDF J132408.3+271543 ($z=6.554$) we find upper limits for the [CII] line luminosity of $<2.05$, $<4.52$ and $<10.56\times10^{8}{\rm L}_{\odot}$ respectively. We find upper limits to the FIR luminosity of the galaxies using a spectral energy distribution template of the local galaxy NGC 6946 and taking into account the effects of the Cosmic Microwave Background on the mm observations. For IOK-1, SDF J132415.7+273058 and SDF J132408.3+271543 we find upper limits for the FIR luminosity of $<2.33$, $3.79$ and $7.72\times10^{11}{\rm L}_{\odot}$ respectively. For the lensed galaxy MACS0647-JD, one of the highest redshift galaxy candidate to date with $z_{\rm ph}=10.7^{+0.6}_{-0.4}$ we put an upper limit in the [CII] emission of $<1.36\times10^{8}\times(μ/15)^{-1}{\rm L}_{\odot}$ and an upper limit in the FIR luminosity of $<6.1\times10^{10}\times(μ/15)^{-1}{\rm L}_{\odot}$ (where $μ$ is the magnification factor). We explore the different conditions relevant for the search for [CII] emission in high redshift galaxies as well as the difficulties for future observations with ALMA and CCAT.
description: 12 pages, 9 figures, accepted for publication in the Astrophysical Journal
Wilson's renormalization group: a paradigmatic shift
Creators: name: Brezin, Edouard
Publisher: name: arXiv
Year: 2014
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A personal and subjective recollection, concerning mainly Wilson's lectures delivered over the spring of 1972 at Princeton University (summary of a talk at Cornell University on November 16, 2013 at the occasion of the memorial Kenneth G. Wilson conference).
Prüfung der akustischen Wirkung von Tragrollen zur Ableitung von Vorgaben für Gurtförderanlagen
Creators: name: Hernschier, Stephan
name: Schneider, Robert
name: Rieder, Thomas
name: Simon, Sylvio
name: Täschner, Dirk
Publisher: name: Zenodo
Year: 2020
Subjects: Tragrollenprüfstand, Akustische Kamera, Tagebau-Großgeräte, Akustisches Modell, Gurtförderanlage, Tragrolle

description: Prüfung der akustischen Wirkung von Tragrollen zur Ableitung von Vorgaben für Gurtförderanlagen
 Kurzbeschreibung
 Im Rahmen einer Baugruppenprüfung von Tragrollen werden in einer Kooperation mit der LEAG akustische und mechanische Kenngrößen auf einem Prüfstand an der Brandenburgischen Technischen Universität Cottbus-Senftenberg untersucht.
 Bestandteile dieser Untersuchungen sind:
 • Hochfahrprüfläufe – Dabei wird eine Tragrolle unter Prüflast auf eine Umfangsgeschwindigkeit von 10 m/s beschleunigt und der Schalldruckpegel aufgezeichnet. Dies ermöglicht die Berechnung der Schallemission in Abhängigkeit von der Umfangsgeschwindigkeit.
 • Erfassung der Tragrollengeometrie – Die präzise Beschreibung der Geometrie des Tragrollenmantels ermöglicht Rückschlüsse auf mögliche Anregungsursachen.
 • Ermittlung des Abklingverhaltens – Durch Anschlagversuche wird das Eigenschwingverhalten einer Tragrolle erfasst.
 • Ermittlung des Axialspiels – Durch die Messung der axialen Verschiebbarkeit können Rückschlüsse auf die Einhaltung der Konstruktionsvorgaben im Bereich der Wälzlagerung und auf die Einsatzdauer der Tragrollen gezogen werden.
 Die ermittelten Kenndaten erlauben eine quantitative Bewertung der akustischen Wirkung von Tragrollen und ermöglichen die Ableitung von Vorgaben für den Einsatz in Gurtförderanlagen.
 Auf Grundlage der aktuellsten Untersuchungen wurde ein neuartiges Axialspielmessgerät entwickelt und in Zusammenarbeit mit der LEAG Grenzwerte für die Axiale Verschiebbarkeit für Tragrollen in Hochleistungsgurförderanlagen ausgearbeitet. Auf die Ergebnisse dieser Arbeit wird in dem Vortrag gesondert eingegangen.
 Basierend auf den Erkenntnissen umfangreicher Tragrollenprüfungen und Untersuchungen wurden die Lieferanforderungen der LEAG an Tragrollen um neue Parameter erweitert und präzisiert. Somit wird eine gezielte Beschaffung von geräuscharmen und langlebigen Tragrollen ermöglicht. Weiterhin können aussagekräftige Vorgaben für die Neuausrüstung von Gurtförderanlagen hinsichtlich der zu erwartenden Geräuschimmissionen gegeben werden.
 Die Umsetzung dieser Richtlinien zeigt in der Praxis bereits großen Erfolg. In Kombination mit einer zielgerichteten Instandhaltung sichern die akustischen und mechanischen Vorgaben für Tragrollen eine über mehrere Jahre mit der Neuausrüstung vergleichbare Geräuschemission für Gurtförderanlagen ab.
The proper analytical solution of the Korteweg-de Vries-Burgers equation
Creators: name: Shu, Jian-Jun
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The asymptotic expansion of the Korteweg-de Vries-Burgers equation is presented in this paper.
Supplementary document for Enhanced Surface Second Harmonic Generation in Nanolaminates - 6315953.pdf
Creators: name: Abtahi, Fatemeh
name: Paul, Pallabi
name: Beer, Sebastian
name: Kuppadakkath, Athira
name: Pakhomov, Anton
name: Szeghalmi, Adriana
name: Nolte, Stefan
name: Setzpfandt, Frank
name: Eilenberger, Falk
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: 484893
Giant generic topological Hall resistivity of MnSi under pressure
Creators: name: Ritz, R.
name: Halder, M.
name: Franz, C.
name: Bauer, A.
name: Wagner, M.
name: Bamler, R.
name: Rosch, A.
name: Pfleiderer, C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report detailed low temperature magnetotransport and magnetization measurements in MnSi under pressures up to $\sim12\,{\rm kbar}$. Tracking the role of sample quality, pressure transmitter, and field and temperature history allows us to link the emergence of a giant topological Hall resistivity $\sim50\,{\rm nΩcm}$ to the skyrmion lattice phase at ambient pressure. We show that the remarkably large size of the topological Hall resistivity in the zero-temperature limit must be generic. We discuss various mechanisms which can lead to the much smaller signal at elevated temperatures observed at ambient pressure.
Electronic structure and transport in approximants of the Penrose tiling
Creators: name: de Laissardière, Guy Trambly
name: Szállás, Attila
name: Mayou, Didier
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We present numerical calculations of electronic structure and transport in Penrose approximants. The electronic structure of perfect approximants shows a spiky density of states and a tendency to localization that is more pronounced in the middle of the band. Near the band edges the behavior is more similar to that of free electrons. These calculations of band structure and in particular the band scaling suggest an anomalous quantum diffusion when compared to normal ballistic crystals. This is confirmed by a numerical calculation of quantum diffusion which shows a crossover from normal ballistic propagation at long times to anomalous, possibly insulator-like, behavior at short times. The time scale t*(E) for this crossover is computed for several approximants and is detailed. The consequences for electronic conductivity are discussed in the context of the relaxation time approximation. The metallic like or non metallic like behavior of the conductivity is dictated by the comparison between the scattering time due to defects and the time scale t*(E).
description: 10 pages, 3 figures
“Public Health Leadership and COVID-19 Pandemic in Africa”
Creators: name: Conduah, Andrew
name: Conduah, Andrew Kweku
Publisher: name: figshare
Year: 2023
Subjects: Health management
Health systems

description: Abstract: Objectives: The paper seeks to ascertain the effectiveness of strategies deployed by African leaders to increase the health workers capacity during the pandemic. Methods: The paper adapts the qualitative paradigm of research, which differs structurally from sampling but uses corpus construction to pick contents from secondary data to represent an entire body to “make it functionally equivalent to sampling”. It incorporates existing national and international research on healthcare professionals from both published and grey sources to undertake a content review and assessment of health workforce governance. The nature of public health leadership exhibited in Africa had a significant governance repercussion on the continent in terms of deaths and management of cases, Again, cross-organisational and intra-governmental governance measures are required to bring about improved planning transparency, and delegation of leadership to health employers and health employees greatly improve pandemic preparedness and health systems management during pandemics. Conclusions: Finally, the analysis shows that effective governance structure guarantees systems resilience and countries must prepare in advance and strengthen their health systems to ensure better resilience and performance. For the health professionals to be able to recover, rebuild, repurpose, and be resilient, it is essential that stakeholders keep the discourse and learn from the successes of other health workers management responses. Implications for public health: Health systems recovery and future preparedness hinged on health workforce who can be flexibly mobilised, trained and redeployed, and who can leverage on critical technology to govern and manage future pandemics.
Networked relationships in the e-MID Interbank market: A trading model with memory
Creators: name: Iori, Giulia
name: Mantegna, Rosario N.
name: Marotta, Luca
name: Micciche', Salvatore
name: Porter, James
name: Tumminello, Michele
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Finance (q-fin.ST)
subject: General Finance (q-fin.GN)
subject: FOS: Economics and business

description: Interbank markets are fundamental for bank liquidity management. In this paper, we introduce a model of interbank trading with memory. Our model reproduces features of preferential trading patterns in the e-MID market recently empirically observed through the method of statistically validated networks. The memory mechanism is used to introduce a proxy of trust in the model. The key idea is that a lender, having lent many times to a borrower in the past, is more likely to lend to that borrower again in the future than to other borrowers, with which the lender has never (or has in- frequently) interacted. The core of the model depends on only one parameter representing the initial attractiveness of all the banks as borrowers. Model outcomes and real data are compared through a variety of measures that describe the structure and properties of trading networks, including number of statistically validated links, bidirectional links, and 3-motifs. Refinements of the pairing method are also proposed, in order to capture finite memory and reciprocity in the model. The model is implemented within the Mason framework in Java.
description: 37 pages, 10 figures
Lebinthus estrellae Robillard 2015
Creators: name: Baroga-Barbecho, Jessica B.
name: Tan, Ming Kai
name: Yap, Sheryl A.
name: Robillard, Tony
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Haglotettigoniidae
Lebinthus
Lebinthus estrellae

description: Lebinthus estrellae Robillard, 2015 (Fig. 1) Lebinthus estrellae Robillard, 2015, in Robillard & Yap, 2015: 63 (original description); Baroga et al., 2016: 94 (taxonomic key). Type material. Holotype male. Philippines. [Visayas] Leyte: Burauen, Barangay Villa Corazon, forêt secondaire sur pente [secondary forest on slope] (GPS Bar2), 10°57’52.1”N 124°46’39.8”E, 345 m, (TR29), iii.2013, coll. T. Robillard (UPLBMNH) [examined]. Paratypes (2♂, 15♀): same information as holotype (MNHN) [examined]. Type locality. Leyte: Philippines. Burauen, Barangay Villa Corazon, secondary forest on slope Distribution. Philippines: Leyte, Barauen Diagnosis. This species can be recognized from other species of the sanchezi group by its dark brown colouration, short rounded lophi in male genitalia, presence of vertical whitish bands below eyes, clypeus black with yellow edge; male genitalia with short rounded lophi, and very short female FWs (reaching posterior margin of first tergite). Habitat. Found in bushes and leaf litter.
description: Published as part of Baroga-Barbecho, Jessica B., Tan, Ming Kai, Yap, Sheryl A. & Robillard, Tony, 2020, Taxonomic study of Lebinthus Stål, 1877 (Orthoptera: Gryllidae: Eneopterinae) with description of six new species in the Philippines, pp. 401-438 in Zootaxa 4816 (4) on page 415, DOI: 10.11646/zootaxa.4816.4.1, http://zenodo.org/record/3954523
description: {"references": ["Robillard, T. & Yap, S. A. (2015) The Eneopterinae crickets from Leyte Island (Philippines) with description of two new species [Insecta: Orthoptera: Grylloidea: Gryllidae]. The Raffles Bulletin of Zoology, 63, 69 - 90.", "Baroga, J. B., Yap, S. A. & Robillard, T. (2016) Two new species of Eneopterinae crickets (Orthoptera: Gryllidae) from Luzon, Philippines. Zootaxa, 4139 (1), 93 - 105. https: // doi. org / 10.11646 / zootaxa. 4139.1.5"]}
The Hubble Expansion is Isotropic in the Epoch of Dark Energy
Creators: name: Darling, Jeremy
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The isotropy of the universal Hubble expansion is a fundamental tenet of physical cosmology, but it has not been precisely tested during the current epoch, when dark energy is dominant. Anisotropic expansion will produce a shearing velocity field, causing objects to stream toward directions of faster expansion and away from directions of slower expansion. This work tests the basic cosmological assumption of isotropic expansion and thus the isotropy of dark energy. The simplest anisotropy will manifest as a quadrupolar curl-free proper motion vector field. We derive this theoretical signature using a tri-axial expanding metric with a flat geometry (Bianchi I model), generalizing and correcting previous work. We then employ the best current data, the Titov & Lambert (2013) proper motion catalog of 429 objects, to measure the isotropy of universal expansion. We demonstrate that the Hubble expansion is isotropic to 7% (1 $σ$), corresponding to streaming motions of 1 microarcsecond/yr, in the best-constrained directions (-19% and +17% in the least-constrained directions) and does not significantly deviate from isotropy in any direction. The Gaia mission, which is expected to obtain proper motions for 500,000 quasars, will likely constrain the anisotropy below 1%.
description: 6 pages, 1 figure, 3 tables. Accepted for publication by MNRAS
Optimization Of Cross Domain Sentiment Analysis Using Sentiwordnet
Creators: name: Paramesha, K
name: Ravishankar, K C
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: The task of sentiment analysis of reviews is carried out using manually built / automatically generated lexicon resources of their own with which terms are matched with lexicon to compute the term count for positive and negative polarity. On the other hand the Sentiwordnet, which is quite different from other lexicon resources that gives scores (weights) of the positive and negative polarity for each word. The polarity of a word namely positive, negative and neutral have the score ranging between 0 to 1 indicates the strength/weight of the word with that sentiment orientation. In this paper, we show that using the Sentiwordnet, how we could enhance the performance of the classification at both sentence and document level.
Moebius geometry of three dimensional Wintgen ideal submanifolds in S^5
Creators: name: Xie, Zhenxiao
name: Li, Tongzhu
name: Ma, Xiang
name: Wang, Changping
Publisher: name: arXiv
Year: 2014
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53A30, 53A55, 53C42

description: Wintgen ideal submanifolds in space forms are those ones attaining equality at every point in the so-called DDVV inequality which relates the scalar curvature, the mean curvature and the normal scalar curvature. This property is conformal invariant; hence we study them in the framework of Moebius geometry, and restrict to three dimensional Wintgen ideal submanifolds in S^5. In particular we give Moebius characterizations for minimal ones among them, which are also known as (3-dimensional) austere submanifolds (in 5-dimensional space forms).
description: 21 pages
Seiberg-Witten for $Spin(n)$ with Spinors
Creators: name: Chacaltana, Oscar
name: Distler, Jacques
name: Trimm, Anderson
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: $\mathcal{N}=2$ supersymmetric $Spin(n)$ gauge theory admits hypermultiplets in spinor representations of the gauge group, compatible with $β\leq0$, for $n\leq 14$. The theories with $β<0$ can be obtained as mass-deformations of the $β=0$ theories, so it is of greatest interest to construct the $β=0$ theories. In previous works, we discussed the $n\leq8$ theories. Here, we turn to the $9\leq n\leq 14$ cases. By compactifying the $D_N$ (2,0) theory on a 4-punctured sphere, we find Seiberg-Witten solutions to almost all of the remaining cases. There are five theories, however, which do not seem to admit a realization from six dimensions.
description: 28 pages, 54 figures
Magnetic anisotropy of spin tetramer system SeCuO$_3$ studied by torque magnetometry and ESR spectroscopy
Creators: name: Herak, Mirta
name: Čabo, Antonija Grubišić
name: Žilić, Dijana
name: Rakvin, Boris
name: Salamon, Krešimir
name: Milat, Ognjen
name: Berger, Helmuth
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present an experimental study of macroscopic and microscopic magnetic anisotropy of a spin tetramer system SeCuO$_3$ using torque magnetometry and ESR spectroscopy. Large rotation of macroscopic magnetic axes with temperature observed from torque magnetometry agrees reasonably well with the rotation of the $\textbf{g}$ tensor above $T \gtrsim 50$~K. Below 50~K, the $\textbf{g}$ tensor is temperature independent, while macroscopic magnetic axes continue to rotate. Additionally, the susceptibility anisotropy has a temperature dependence which cannot be reconciled with the isotropic Heisenberg model of interactions between spins. ESR linewidth analysis shows that anisotropic exchange interaction must be present in SeCuO$_3$. These findings strongly support the presence of anisotropic exchange interactions in the Hamiltonian of the studied system. Below $T_N=8$~K, the system enters a long - range antiferromagnetically ordered state with easy axis along the $^*$ direction. Small but significant rotation of magnetic axes is also observed in the antiferromagnetically ordered state suggesting strong spin-lattice coupling in this system.
description: 14 pages, 13 figures
Structure and thermodynamic properties of a weakly-coupled antiferromagnetic spin-1/2 chain compound (C5H12N)CuBr3
Creators: name: Pan, B. Y.
name: Wang, Y.
name: Zhang, L. J.
name: Li, S. Y.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Single crystals of a metal organic complex \ce{(C5H12N)CuBr3} (\ce{C5H12N} = piperidinium, pipH for short) have been synthesized and the structure was determined by single-crystal X-ray diffraction. \ce{(pipH)CuBr3} crystallizes in the monoclinic group $C$2/$c$. Edging-sharing \ce{CuBr5} units link to form zigzag chains along the $c$ axis and the neighboring Cu(II) ions with spin-1/2 are bridged by bi-bromide ions. Magnetic susceptibility data down to 1.8 K can be well fitted by the Bonner-Fisher formula for antiferromagnetic spin-1/2 chain, giving the intrachain magnetic coupling constant $J$ $\sim$ 17 K. At zero field, \ce{(pipH)CuBr3} shows three-dimensional (3D) order below $T_N$ = 1.68 K. Calculated by the mean-field theory, the interchain coupling constant $J'$ = 0.65 K is obtained and the ordered magnetic moment $m_0$ is about 0.20 $μ_B$. This value of $m_0$ makes \ce{(pipH)CuBr3} a rare compound suitable to study the dimensional crossover problem in magnetism, since both 3D order and one-dimensional (1D) quantum fluctuations are prominent. In addition, specific heat measurements reveal two successive magnetic transitions with lowering temperature when external field $H \geq$ 3 T is applied along the $a'$ axis. The $H$ - $T$ phase diagram of \ce{(pipH)CuBr3} is roughly constructed. The interplay between exchange interactions, dimensionality, Zeeman energy and possible Dzyaloshinkii-Moriya interaction should be the driving force for the multiple phase transitions.
description: 5 pages, 4 figures
Test of Einstein-Podolsky-Rosen Steering Based on the All-Versus-Nothing Proof
Creators: name: Wu, Chunfeng
name: Chen, Jing-Ling
name: Ye, Xiang-Jun
name: Su, Hong-Yi
name: Deng, Dong-Ling
name: Wang, Zhenghan
name: Oh, C. H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In comparison with entanglement and Bell nonlocality, Einstein-Podolsky-Rosen steering is a newly emerged research topic and in its incipient stage. Although Einstein-Podolsky-Rosen steering has been explored via violations of steering inequalities both theoretically and experimentally, the known inequalities in the literatures are far from well-developed. As a result, it is not yet possible to observe Einstein-Podolsky-Rosen steering for some steerable mixed states. Recently, a simple approach was presented to identify Einstein-Podolsky-Rosen steering based on all-versus-nothing argument, offering a strong condition to witness the steerability of a family of two-qubit (pure or mixed) entangled states. In this work, we show that the all-versus-nothing proof of Einstein-Podolsky-Rosen steering can be tested by measuring the projective probabilities. Through the bound of probabilities imposed by local-hidden-state model, the proposed test shows that steering can be detected by the all-versus-nothing argument experimentally even in the presence of imprecision and errors. Our test can be implemented in many physical systems and we discuss the possible realizations of our scheme with non-Abelian anyons and trapped ions.
description: 8 pages, 3 figures. Accepted by Scientific Reports
Laborexperimente zur Entstehung und Wirkung kosmischer Magnetfelder
Creators: name: Stefani, Frank
Publisher: name: arXiv
Year: 2014
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: Magnetic fields of cosmic bodies are generated by the hydromagnetic dynamo effect in moving electrically conducting fluids, such as liquid metals or plasmas. Once produced, cosmic magnetic fields are able to act back on moving fluids. This back-reaction may have dramatic consequences for cosmic structure formation, with the magnetorotational instability (MRI) in accretions disks as the most prominent example. Considerable theoretical and computational progress has been made in understanding both the dynamo effect as well as magnetically triggered flow instabilities. Complementary to this, the last fifteen years have seen much effort in studying both effects in liquid metal experiments. We summarize the history of these experiments, discuss their main results and their limitations, and give an outlook on future activities.
description: 13 pages, 5 figures, in German
Inhibiting unwanted transitions in population transfer in two- and three-level quantum systems
Creators: name: Kiely, Anthony
name: Ruschhaupt, Andreas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We examine the stability of population transfer in two- and three-level systems against unwanted additional transitions. This population inversion is achieved by using recently proposed schemes called "shortcuts to adiabaticity". We quantify and compare the sensitivity of different schemes to these unwanted transitions. Finally, we provide examples of shortcut schemes which lead to a zero transition sensitivity in certain regimes, i.e. which lead to a nearly perfect population inversion even in the presence of unwanted transitions.
description: 11 pages, 9 figures, 2 tables
Polishing of {100} and {111} single crystal diamond through the use of Chemical Mechanical Polishing
Creators: name: Thomas, Evan L. H.
name: Mandal, Soumen
name: Brousseau, Emmanuel B.
name: Williams, Oliver A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Diamond is one of the hardest and most difficult to polish materials. In this paper, the polishing of {111} and {100} single crystal diamond surfaces by standard Chemical Mechanical Polishing, as used in the silicon industry, is demonstrated. A Logitech Tribo Chemical Mechanical Polishing system with Logitech SF1 Syton and a polyurethane/polyester polishing pad was used. A reduction in roughness from 0.92 to 0.23 nm root mean square (RMS) and 0.31 to 0.09 nm RMS for {100} and {111} samples respectively was observed.
description: 13 pages 3 figures, ELHT and SM have contributed equally to the work
Nonuniform Fuchsian codes for noisy channels
Creators: name: Blanco-Chacón, Iván
name: Remón, Dionís
name: Hollanti, Camilla
name: Alsina, Montserrat
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We develop a new transmission scheme for additive white Gaussian noisy (AWGN) channels based on Fuchsian groups from rational quaternion algebras. The structure of the proposed Fuchsian codes is nonlinear and nonuniform, hence conventional decoding methods based on linearity and symmetry do not apply. Previously, only brute force decoding methods with complexity that is linear in the code size exist for general nonuniform codes. However, the properly discontinuous character of the action of the Fuchsian groups on the complex upper half-plane translates into decoding complexity that is logarithmic in the code size via a recently introduced point reduction algorithm.
How Robust Are the Size Measurements of High-redshift Compact Galaxies?
Creators: name: Davari, Roozbeh
name: Ho, Luis C.
name: Peng, Chien Y.
name: Huang, Song
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Massive quiescent galaxies at $z \approx 2$ are apparently much more compact than galaxies of comparable mass today. How robust are these size measurements? We perform comprehensive simulations to determine possible biases and uncertainties in fitting single-component light distributions to real galaxies. In particular, we examine the robustness of the measurements of the luminosity, size, and other structural parameters. We devise simulations with increasing realism to systematically disentangle effects due to the technique (specifically using GALFIT) and the intrinsic structures of the galaxies. By accurately capturing the detailed substructures of nearby elliptical galaxies and then rescaling their sizes and signal-to-noise to mimic galaxies at different redshifts, we confirm that the massive quiescent galaxies at $z \approx 2$ are significantly more compact intrinsically than their local counterparts. Their observed compactness is not a result of missing faint outer light due to systematic errors in modeling. In fact, we find that fitting multi-component galaxies with a single Sérsic profile, the procedure most commonly adopted in the literature, biases the inferred sizes higher by up to 10% - 20%, which accentuates the amount of size evolution required. If the sky estimation has been done robustly and the model for the point-spread function is fairly accurate, GALFIT can retrieve the properties of single-component galaxies over a wide range of signal-to-noise ratios without introducing any systematic errors.
description: 18 pages, 11 figures, 8 tables; Accepted for publication in ApJ
Conservative formulation for compressible multiphase flows
Creators: name: Romenski, Evgeniy
name: Belozerov, Alexander A.
name: Peshkov, Ilya M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Derivation of governing equations for multiphase flow on the base of thermodynamically compatible systems theory is presented. The mixture is considered as a continuum in which the multiphase character of the flow is taken into account. The resulting governing equations of the formulated model belong to the class of hyperbolic systems of conservation laws. In order to examine the reliability of the model, the one-dimensional Riemann problem for the four phase flow is studied numerically with the use of the MUSCL-Hancock method in conjunction with the GFORCE flux.
description: 21 pages, 3 figures
La disastrosa traversata del Carlo R. Note di viaggio
Creators: name: Buscalioni, Luigi
name: Cattarulla, Camilla
Publisher: name: Zenodo
Year: 2021
Subjects: travel notes
journey
migrants
pandemic

description: The book Luigi Buscalioni. La disastrosa traversata del Carlo R., arises from a philological and archival work by Camilla Cattarulla, Trans.Arch researcher at the Università degli Studi Roma Tre. These are the travel notes that the Italian doctor Luigi Buscalioni wrote about the journey he made in 1893 along with 1,500 other compatriots aboard the steamship Carlo R. bound for Brazil in the midst of a cholera outbreak.
 The book allows us to reflect on writing and archives in a pandemic context, as well as on the precariousness to which migrants were historically exposed.