cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Markovian approximation in foreign exchange markets
Creators: name: Baviera, R.
name: Vergni, D.
name: Vulpiani, A.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: In this paper we test the random walk hypothesis on the high frequency dataset of the bid--ask Deutschemark/US dollar exchange rate quotes registered by the inter-bank Reuters network over the period October 1, 1992 to September 30, 1993. Then we propose a stochastic model for price variation which is able to describe some important features of the exchange market behavior. Besides the usual correlation analysis we have verified the validity of this model by means of other approaches inspired by information theory . These techniques are not only severe tests of the approximation but also evidence some aspects of the data series which have a clear financial relevance.
description: 19 pages, LaTeX, uses elsart.cls and JournalOfFinance.sty, 7 eps figures, submitted to J. of Int. Money and Finance
Phonon Dispersion Relation, High-Pressure Phase Stability and Thermal Expansion in YVO4
Creators: name: Mittal, R.
name: Gupta, M. K.
name: Singh, Baltej
name: Pintschovius, L.
name: Zavartsev, Yu D.
name: Chaplot, S. L.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The orthovanadates are useful as host matrices for immobilization of radioactive wastes. The thermodynamic stability of these materials is crucial for their applications in high pressure and temperatures environment. It is necessary to investigate the phonons in the entire Brillouin zone, beyond the zone-centre phonons accessible in previous Raman and infrared experiments. We have carried out extensive neutron inelastic scattering experiments to derive the phonon dispersion relation of YVO4 up to high energy transfer of 65 meV using a single crystal, which are perhaps reported for the first time in any orthovanadate compound. The measured phonon dispersion relation is in good agreement with our first principles density functional theory as well as shell model calculations. The calculated pressure dependence of phonon modes in the zircon and scheelite phases shows unstable modes and violation of the Born stability criteria at high pressure, which may be lead to instability in YVO4 at high pressures. We also calculate large anisotropy in the thermal expansion behavior which arises from difference in anisotropic elasticity and mode Grüneisen parameters.
description: 28 Pages, 14 Figures
The disc instability model of dwarf-novae and low-mass X-ray binary transients
Creators: name: Lasota, Jean-Pierre
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The disc instability model which is supposed to describe outbursts of dwarf nova and low-mass X-ray binary transient systems is presented and reviewed in detail. Various deficiencies of the model are pointed out and various remedies and generalizations are presented and discussed.
description: 102 pages, 36 figures (43 postscript files); New Astronomy Reviews, in press
Masses, Oxygen and Carbon abundances in CHEPS dwarf stars
Creators: name: Pavlenko, Y. V.
name: Kaminsky, B. M.
name: Jenkins, J. S.
name: Ivanyuk, O. M.
name: Jones, H. R. A.
name: Lyubchik, Yu. P.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. We report the results from the determination of stellar masses, carbon and oxygen abundances in the atmospheres of 107 stars from the CHEPS program. Our stars are drawn from a population with a significantly super-solar metallicity. At least 10 of these stars are known to host orbiting planets. Aims. In this work, we set out to understand the behavior of carbon and oxygen abundance in stars with different spectral classes, metallicities and V sin i , within the metal-rich stellar population. Methods. Masses of these stars were determined using the data from Gaia DR2 release. The oxygen and carbon abundances were determined by fitting the absorption lines. Oxygen abundances were determined by fits to the 6300.304 A O I line and for the determination of the carbon abundances we used 3 lines of the C I atom and 12 lines of C2 molecule. Results. We determine masses and abundances of 107 CHEPS stars. There is no evidence that the [C/O] ratio depends on V sin i or the mass of the star, within our constrained range of masses, i.e. 0.82 < Mstar/Msun < 1.5 and metallicities -0.27 < [Fe=H] < +0.39 and we confirm that metal-rich dwarf stars with planets are more carbon-rich in comparison with non-planet host stars, with a statistical signifcance of 96%. Conclusions. We find tentative evidence that there is a slight offset to lower abundance and a greater dispersion in oxygen abundances relative to carbon, and interpret this as potentially arising from the production of the oxygen being more effective at more metal-poor epochs. We also find evidence that for lower mass star's the angular momentum loss in star's with planets as measured by V sin i is steeper than star's without planets. In general, we find that the fast rotators (V sin i > 5 km/s) are massive stars.
description: 14 pages, 14 Figs, 7 Tables, accepted by AA
Phonons and Anisotropic Thermal Expansion Behaviour of NiX (X = S, Se, Te)
Creators: name: Goel, Prabhatasree
name: Gupta, M. K.
name: Mishra, S. K.
name: Singh, Baltej
name: Mittal, R.
name: Sastry, P. U.
name: Thamizhavel, A.
name: Chaplot, S. L.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Metal Chalcogenides have been known for important technological applications and have attracted continuous interest in their structure, electronic, thermal and transport properties. Here we present first principles calculations of the vibrational and thermodynamic properties of NiX (X = S, Se, Te) compounds along with inelastic neutron scattering measurements of the phonon spectrum in NiSe. The measured phonon spectrum is in very good agreement with the computed result. We also report the measurement of thermal expansion behavior of NiSe using X-ray diffraction from 13 K to 300 K. The change in the hexagonal c lattice parameter in NiSe is considerably greater as compared to a parameter. The ab-initio calculated anisotropic Grüneisen parameters of the different phonon modes in all the chalcogenides along with the elastic constants are used to compute anisotropic thermal expansion behviour, which is found in good agreement with experiments. The displacement pattern of phonons indicate that difference in amplitudes of Ni and X atoms follow the anisotropy of thermal expansion behavior along c- and a-axis.
description: 21 Pages, 9 Figures
Quantum Breathers in Electron-phonon Systems
Creators: name: Wang, W. Z.
name: Bishop, A. R.
name: Gammel, J. T.
name: Silver, R. N.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Quantum breathers are studied numerically in several electron-phonon coupled finite chain systems, in which the coupling results in intrinsic nonlinearity but with varying degrees of nonadiabaticity. As for quantum nonlinear lattice systems, we find that quantum breathers can exist as eigenstates of the system Hamiltonians. Optical responses are calculated as signatures of these coherent nonlinear excitations. We propose a new type of quantum nonlinear excitation, breather-excitons, which are bound states of breathers and excitons, whose properties are clarified with a minimal exciton-phonon model.
description: RevTex, 6 figures in one file
Duguetia eximia Diels
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Magnoliales
Annonaceae
Duguetia
Duguetia eximia

description: [44] Duguetia eximia Diels
 Notizbl. Bot. Gart. Berlin-Dahlem 11: 79 [31 Mar. 1931] (Diels 1931).
NOTE. — Known only from the Guiana Shield.
VERNACULAR NAMES. — Pa: pakih-em-priye • Wp: mɨtũluway, pina’ɨ u • Nt: pepee anga sawtu • Cr: manmanyawé-piman.
 HERBARIUM DATA (FG). — 70 collections at CAY. Sel. exs.: G.S. Perrottet s.n. (holo-, G [G00237263, fragm. B [B 10 1093263]).
 SIZE. — Up to 10 cm dbh (Maas et al. 2003).
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 371, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
Disappearance of the extended main sequence turn-off in intermediate age clusters as a consequence of magnetic braking
Creators: name: Georgy, C.
name: Charbonnel, C.
name: Amard, L.
name: Bastian, N.
name: Ekström, S.
name: Lardo, C.
name: Palacios, A.
name: Eggenberger, P.
name: Cabrera-Ziri, I.
name: Gallet, F.
name: Lagarde, N.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Extended MS turn-offs are features commonly found in the colour-magnitude diagrams of young and intermediate age (less than about 2 Gyr) massive star clusters, where the MS turn-off is broader than can be explained by photometric uncertainties, crowding, or binarity. Rotation is suspected to be the cause of this feature, by accumulating fast rotating stars, strongly affected by gravity darkening and rotation-induced mixing, near the MS turn-off. This scenario successfully reproduces the tight relation between the age and the actual extent in luminosity of the extended MS turn-off of observed clusters. Below a given mass (dependent on the metallicity), stars are efficiently braked early on the MS due to the interaction of stellar winds and the surface magnetic field, making their tracks converge towards those of non-rotating tracks in the HRD. When these stars are located at the turn-off of a cluster, their slow rotation causes the extended MS turn-off feature to disappear. We investigate the maximal mass for which this braking occurs at different metallicities, and determine the age above which no extended MS turn-off is expected in clusters. Our models predict that the extended MS turn-off phenomenon disappears at ages older than about 2 Gyr. There is a trend with the metallicity, the age at which the disappearance occurs becoming older at higher metallicity. These results are robust between the two codes used in this work, despite some differences in the input physics and in particular in the detailed description of rotation-induced internal processes and of angular momentum extraction by stellar winds. Comparing our results with clusters in the LMC and Galaxy shows a very good fit to the observations. This strengthens the rotation scenario to explain the cause of the extended MS turn-off phenomenon.
description: 7 pages, 4 figures, accepted for publication in A&A
Metadaten - Und was haben sie mit guter wissenschaftlicher Praxis zu tun?
Creators: name: Perry, Anja
Publisher: name: Zenodo
Year: 2021
Subjects: Metadaten
Forschungsdatenmanagement
FDM
Open Science

description: Vortrag bei den Thüringer FDM-Tagen am 22.06.2021.
Additional file 1 of Microbiome and metabolic changes in milk in response to artemisinin supplementation in dairy cows
Creators: name: Hou, Kun
name: Tong, Jinjin
name: Zhang, Hua
name: Gao, Shan
name: Guo, Yuqin
name: Niu, Hui
name: Xiong, Benhai
name: Jiang, Linshu
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Physiology
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Computational Biology

description: Additional file 1. Company qualification and artemisinin analysis certificate.
Astropy Proposal for Enhancement 20: Formatting Code with Black (APE 20)
Creators: name: Aldcroft, Tom
name: Tollerud, Erik
Publisher: name: Zenodo
Year: 2023

description: This APE proposes that the astropy core package adopt Black formatting for the code. Black formatting refers to the default code style defined by the Black code formatter.

Since this APE was accepted in 2022, the Black code format has been implemented by other tools, most notably ruff. In the text below we will use the term Black to refer to Black or any other tool that provides robust auto-formatting in the Black code format. Beyond the initial migration of the code base to black formatting, the tool(s) used to maintain Black formatting is not a requirement of this APE.
A mode-coupling theory for the pasty rheology of soft glassy materials
Creators: name: Hebraud, P.
name: Lequeux, F.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In this paper, we introduce a simple mode-coupling model for concentrated suspensions under flow . This model exhibits a jamming transition, and stress vs shear rate relations which are very similar to experimental results. Namely newtonian regime or yield stress are followed by a slow variation of the stress for higher shear rates, and by an apparent newtonian regime for very large shear rates. Another striking result is that under oscillating strain, even in the jammed state, the system exhibits a relaxation time which depends on the strain amplitude.
description: 9 pages, including 4 figures
Heteroclinic Dynamics of Localized Frequency Synchrony: Heteroclinic Cycles for Small Populations
Creators: name: Bick, Christian
Publisher: name: arXiv
Year: 2018
Subjects: subject: Dynamical Systems (math.DS)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Many real-world systems can be modeled as networks of interacting oscillatory units. Collective dynamics that are of functional relevance for the oscillator network, such as switching between metastable states, arise through the interplay of network structure and interaction. Here, we give results for small networks on the existence of heteroclinic cycles between dynamically invariant sets on which the oscillators show localized frequency synchrony. Trajectories near these heteroclinic cycles will exhibit sequential switching of localized frequency synchrony: a population oscillators in the network will oscillate faster (or slower) than others and which population has this property changes sequentially over time. Since we give explicit conditions on the system parameters for such dynamics to arise, our results give insights into how network structure and interactions (which include higher-order interactions between oscillators) facilitate heteroclinic switching between localized frequency synchrony.
The mean and variance of vec{D'X'AXD + 12(LXB+B'X'Ll) + C}, when vec X has a normal distribution with mean vec M' and variance variance UcE4 V.
Creators: name: Neudecker, H
name: Neudecker, H
Publisher: name: Unknown
Year: 1984
Subjects: subject: Research Methods/ Statistical Methods
subject: covariance matrix
subject: Kronecker product
subject: noncentral Wishart distribution
subject: Commutation matrix

description: Matrix expressions for the mean and covariance matrix of a general •second degree matrix polynomial are derived by applying the Kronecker product and the commutation matrix.
Composite Fermions and quantum Hall systems: Role of the Coulomb pseudopotential
Creators: name: Wojs, Arkadiusz
name: Quinn, John J.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The mean field composite Fermion (CF) picture successfully predicts angular momenta of multiplets forming the lowest energy band in fractional quantum Hall (FQH) systems. This success cannot be attributed to a cancellation between Coulomb and Chern-Simons interactions beyond the mean field, because these interactions have totally different energy scales. Rather, it results from the behavior of the Coulomb pseudopotential V(L) (pair energy as a function of pair angular momentum) in the lowest Landau level (LL). The class of short range repulsive pseudopotentials is defined that lead to short range Laughlin like correlations in many body systems and to which the CF model can be applied. These Laughlin correlations are described quantitatively using the formalism of fractional parentage. The discussion is illustrated with an analysis of the energy spectra obtained in numerical diagonalization of up to eleven electrons in the lowest and excited LL's. The qualitative difference in the behavior of V(L) is shown to sometimes invalidate the mean field CF picture when applied to higher LL's. For example, the nu=7/3 state is not a Laughlin nu=1/3 state in the first excited LL. The analysis of the involved pseudopotentials also explains the success or failure of the CF picture when applied to other systems of charged Fermions with Coulomb repulsion, such as the Laughlin quasiparticles in the FQH hierarchy or charged excitons in an electron-hole plasma.
description: 27 pages, 23 figures, revised version (significant changes in text and figures), submitted to Phil. Mag. B
Duguetia granvilleana Maas
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Magnoliales
Annonaceae
Duguetia
Duguetia granvilleana

description: [45] Duguetia granvilleana Maas
 Bot. Jahrb. Syst. 121 (4): 476 (Maas 1999).
NOTE. — Known only from the Guiana Shield.
 HERBARIUM DATA (FG). — 25 collections at CAY. Sel. exs.: J.-J. de Granville et al. 6330 (holo-, U [U0008263]; iso-, CAY [CAY003561]); O. Poncy et al. 1748: 18 m × 18 cm.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 371, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
Threshold effects in electron-positron pair creation from the vacuum: Stabilization and longitudinal vs transverse momentum sharing
Creators: name: Krajewska, K.
name: Kamiński, J. Z.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Momentum distributions of electron-positron pairs created from the vacuum by an oscillating in time electric field are calculated in the framework of quantum field theory. A pronounced enhancement of those distributions is observed as the frequency of the electric field passes across the one-photon threshold. Below that threshold the pairs preferentially carry a longitudinal momentum, while above the threshold they tend to carry a transverse momentum. Such momentum sharing has an impact on the number of produced pairs: It grows fast with increasing the field frequency below the threshold but it saturates at a roughly constant value above it. On the other hand, at the fixed frequency above the one-photon threshold, the number of pairs scales quadratically with the field strength. This typically perturbative scaling holds even for large electric fields. Thus, the validity of the perturbation theory is extended here to processes which result in creation of particles with substantial transverse momenta.
description: 8 pages, 8 figures
Duguetia paraensis R. E. Fr.
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Magnoliales
Annonaceae
Duguetia
Duguetia paraensis

description: [46] Duguetia paraensis R.E.Fr.
(Fig. 7B)
 Acta Horti Berg. 13 (3): 111 (Fries 1941).
VERNACULAR NAMES. — Wp: apelemu’ɨ, pina’ɨsĩ, pina’ɨsili, pina’ɨ to wi’i, ukɨ’ ɨ• Cr: manmanyawé-piman • Br: amejó, meijú.
 HERBARIUM DATA (FG). — 15 collections at CAY. Sel. exs.: D. Sabatier & J.-F. Molino 5304.
INVENTORY DATA (FG). — 3 trees in 3 plots; Fmax <1 %; dbhinv = 20.1 cm.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on pages 371-372, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
Spin, gravity, and inertia
Creators: name: Obukhov, Yuri N.
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The gravitational effects in the relativistic quantum mechanics are investigated. The exact Foldy-Wouthuysen transformation is constructed for the Dirac particle coupled to the static spacetime metric. As a direct application, we analyze the non-relativistic limit of the theory. The new term describing the specific spin (gravitational moment) interaction effect is recovered in the Hamiltonian. The comparison of the true gravitational coupling with the purely inertial case demonstrates that the spin relativistic effects do not violate the equivalence principle for the Dirac fermions.
description: Revtex, 12 pages, no figures, accepted in Phys. Rev. Lett
Heteroclinic Dynamics of Localized Frequency Synchrony: Stability of Heteroclinic Cycles and Networks
Creators: name: Bick, Christian
name: Lohse, Alexander
Publisher: name: arXiv
Year: 2018
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In the first part of this paper, we showed that three coupled populations of identical phase oscillators give rise to heteroclinic cycles between invariant sets where populations show distinct frequencies. Here, we now give explicit stability results for these heteroclinic cycles for populations consisting of two oscillators each. In systems with four coupled phase oscillator populations, different heteroclinic cycles can form a heteroclinic network. While such networks cannot be asymptotically stable, the local attraction properties of each cycle in the network can be quantified by stability indices. We calculate these stability indices in terms of the coupling parameters between oscillator populations. Hence, our results elucidate how oscillator coupling influences sequential transitions along a heteroclinic network where individual oscillator populations switch sequentially between a high and a low frequency regime; such dynamics appear relevant for the functionality of neural oscillators.
An improved Metropolis algorithm for hard core systems
Creators: name: Jaster, Andreas
Publisher: name: arXiv
Year: 1997
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present an improved Metropolis algorithm for arbitrary hard core systems in any dimensions. In the new updating scheme the conventional Metropolis step of a single particle is replaced by a collective step of a chain of particles. For the two-dimensional hard sphere model we show that this algorithm essentially reduces autocorrelation times in vicinity of the transition point.
description: 9 pages, Latex, 3 figures, to appear in Physica A
Additional file 1 of Non-invasive lung cancer diagnosis and prognosis based on multi-analyte liquid biopsy
Creators: name: Chen, Kezhong
name: Sun, Jianlong
name: Zhao, Heng
name: Jiang, Ruijingfang
name: Zheng, Jianchao
name: Li, Zhilong
name: Peng, Jiaxi
name: Shen, Haifeng
name: Zhang, Kai
name: Zhao, Jin
name: Zhu, Shida
name: Wang, Yuying
name: Yang, Fan
name: Wang, Jun
Publisher: name: figshare
Year: 2021
Subjects: subject: Physical Sciences not elsewhere classified
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Mental Health

description: Additional file 1: Supplementary Figures.
Understanding observational characteristics of solar flare current sheets
Creators: name: Ren, Zining
name: Wang, Yulei
name: Cheng, Xin
name: Ding, Mingde
Publisher: name: arXiv
Year: 2025
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The elongated bright structures above solar flare loops are suggested to be current sheets, where magnetic reconnection takes place. Observations have revealed various characteristics of the current sheet; however, their physical origin remains to be ascertained. In this study we aim to reveal the relations of observational characteristics of current sheets with the fundamental processes of magnetic reconnection. Using high-resolution 3D magnetohydrodynamic simulations of turbulent magnetic reconnection within a solar flare current sheet, we synthesized the remote-sensing observations of the current sheet and determined their physical properties. Turbulent magnetic reconnection can significantly broaden the apparent width of the current sheet, which is much larger than the realistic physical width because of the superposition effect. The differential emission measures of the current sheet have two peaks; the high-temperature component is spatially related to confirmed small-scale reconnection sites, showing that the current sheet is directly heated by reconnection. Moreover, we demonstrate that strong turbulence can cause the nonthermal broadening of spectral lines at both the current sheet and flare loop-top regions. A strong correlation between them in time is also observed. Our 3D turbulent magnetic reconnection flare model can be used to interpret primary observational characteristics of the elongated bright current sheets of solar flares.
description: 9 pages, 12 figures. Accepted for publication in Astronomy & Astrophysics
Additional file 3 of Non-invasive lung cancer diagnosis and prognosis based on multi-analyte liquid biopsy
Creators: name: Chen, Kezhong
name: Sun, Jianlong
name: Zhao, Heng
name: Jiang, Ruijingfang
name: Zheng, Jianchao
name: Li, Zhilong
name: Peng, Jiaxi
name: Shen, Haifeng
name: Zhang, Kai
name: Zhao, Jin
name: Zhu, Shida
name: Wang, Yuying
name: Yang, Fan
name: Wang, Jun
Publisher: name: figshare
Year: 2021
Subjects: subject: Physical Sciences not elsewhere classified
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Mental Health

description: Additional file 3. Methods.
Photometric Redshift Analysis using Supervised Learning Algorithms and Deep Learning
Creators: name: Chong, Kenny
name: Yang, Abel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a catalogue of galaxy photometric redshifts for the Sloan Digital Sky Survey (SDSS) Data Release 12. We use various supervised learning algorithms to calculate redshifts using photometric attributes on a spectroscopic training set. Two training sets are analysed in this paper. The first training set consists of 995,498 galaxies with redshifts up to $z \approx 0.8$. On the first training set, we achieve a cost function of 0.00501 and a root mean squared error value of 0.0707 using the XGBoost algorithm. We achieved an outlier rate of 2.1\% and 86.81\%, 95.83\%, 97.90\% of our data points lie within one, two, and three standard deviation of the mean respectively. The second training set consists of 163,140 galaxies with redshifts up to $z\approx0.2$ and is merged with the Galaxy Zoo 2 full catalog. We also experimented on convolutional neural networks to predict five morphological features (Smooth, Features/Disk, Star, Edge-on, Spiral). We achieve a root mean squared error of 0.117 when validated against an unseen dataset with over 200 epochs. Morphological features from the Galaxy Zoo, trained with photometric features are found to consistently improve the accuracy of photometric redshifts.
description: Poster presented at the XLVIII International Symposium on Multiparticle Dynamics (ISMD2018)
A new model to describe the physics of VOPO
Creators: name: Weisse, A.
name: Bouzerar, G.
name: Fehske, H.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the past different models for the magnetic salt vanadyl pyrophosphate (VOPO) were discussed. Neither a spin ladder nor an alternating chain are capable to describe recently measured magnetic excitations. In this paper we propose a 2D model that fits better to experimental observations.
description: 4 pages, 6 figures included
Relativistic Quantum Scattering on a Cone
Creators: name: Spinelly, J.
name: de Mello, E. R. Bezerra
name: Bezerra, V. B.
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the relativistic quantum mechanical scattering of a bosonic particle by an infinite straight cosmic string, considering the non-minimal coupling between the bosonic field and the scalar curvature. In this case, an effective two-dimensional delta-function interaction takes place besides the usual topological scattering and a renormalization procedure is necessary in order to treat the problem that appears in connection with the delta-function.
description: 22 pages, LATEX file
Discussione di R. Kirchmayr, Passioni del visibile. Saggi sull'estetica francese contemporanea
Creators: name: Pelgreffi, Igor
Publisher: name: Zenodo
Year: 2019

description: Uscita nell’autunno del 2018 per i tipi di Ombre Corte, nella collana Culture, questa raccolta di saggi di Raoul Kirchmayr . dedicata all’estetica francese contemporanea, segnatamente a tematiche legate alla visione e allo statuto dell’immagine. Ma questa . gi. una semplificazione: accanto alla dimensione estetica, il lettore trover. riferimenti ad altre questioni, come quella del soggetto o quella della storia. Tipico dell’autore, della sua lucida proposta filosofico-critica che si caratterizza, ormai da molti anni, come una sintesi che opera nel quadro di linguaggi legati principalmente alla decostruzione, alla psicoanalisi, alla fenomenologia e al pensiero critico. Questa particolarissima sintesi dell’eterogeneo ha un proprio denominatore comune nella grande attenzione al contemporaneo, colto nelle sue morfologie relativamente molteplici, un’attitudine che Kirchmayr manifesta, oltre che come autore, anche nel suo lavoro per la rivista aut aut, di cui . redattore storico. Forse non . un caso che, grosso modo in contemporanea con la preparazione del volume in oggetto, Kirchmayr, assieme a Enrica Lisciani-Petrini, abbia curato il fascicolo n. 381 di aut aut, uscito nel 2019, intitolato: Sartre/Merleau-Ponty. Un dissidio produttivo. Decidere di approfondire quella che sembrava una pagina consegnata al passato, cio. la querelle degli anni Cinquanta tra Sartre e Merleau-Ponty, non . un cedimento all’occasione editoriale. Indica un riaprire l’ottica su una stagione del pensiero francese senz’altro molto lontana da noi, una torsione dello sguardo compiuta in nome di ragioni che, almeno in parte, ci pare siano presenti anche nello spirito con cui . scritto Passioni del visibile, ragioni che portano a interrogarsi poi sul senso e sul valore del termine “passione”. Su questo torneremo pi. avanti
N=1 Supersymmetric Spin-Charge Separation in effective gauge theories of planar magnetic superconductors
Creators: name: Diamandis, G. A.
name: Georgalas, B. C.
name: Mavromatos, N. E.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a N=1 Supersymmetric extension of a spin-charge separated effective $SU(2)\times U_S(1)$ `particle-hole' gauge theory of excitations about the nodes of the gap of a d-wave planar magnetic superconductor. The supersymmetry is achieved without introducing extra degrees of freedom, as compared to the non-supersymmetric models. The only exception, the introduction of gaugino fieds, finds a natural physical interpretation as describing interlayer coupling in the statistical model. The low-energy continuum theory is described by a relativistic (2+1)-dimensional supersymmetric $CP^1$ $σ$-model with Gross-Neveu-Thirring-type four-fermion interactions. We emphasize the crucial rôle of the $CP^1$ constraint in inducing a non-trivial dynamical mass generation for fermions (and thus superconductivity), in a way compatible with manifest N=1 supersymmetry. We also give a preliminary discussion of non-perturbative effects. We argue that supersymmetry suppresses the dangerous for superconductivity instanton contributions to the mass of the perturbatively massless gauge boson of the unbroken U(1) subgroup of SU(2). Finally, we point out the possibility of applying these ideas to effective gauge models of spin-charge separation in one-space dimensional superconducting chains of holons, which, for example, have recently been claimed to be important in the stripe phase of underdoped cuprates.
description: 19 pages LATEX (minor misprints in formula (43) corrected)
Non-linear effects and dephasing in disordered electron systems
Creators: name: Raimondi, R.
name: Schwab, P.
name: Castellani, C.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The calculation of the dephasing time in electron systems is presented. By means of the Keldysh formalism we discuss in a unifying way both weak localization and interaction effects in disordered systems. This allows us to show how dephasing arises both in the particle-particle channel (weak localization) and in the particle-hole channel (interaction effect). First we discuss dephasing by an external field. Besides reviewing previous work on how an external oscillating field suppresses the weak localization correction, we derive a new expression for the effect of a field on the interaction correction. We find that the latter may be suppressed by a static electric field, in contrast to weak localization. We then consider dephasing due to inelastic scattering. The ambiguities involved in the definition of the dephasing time are clarified by directly comparing the diagrammatic approach with the path-integral approach. We show that different dephasing times appear in the particle-particle and particle-hole channels. Finally we comment on recent experiments.
description: 28 pages, 6 figures (14ps-files)
ADVANCEMENTS IN ENDOVASCULAR APPROACHES FOR MANAGING SEVERE CARDIOVASCULAR DISEASES IN HUMANS AND EXAMINATION OF POSSIBLE COMPLICATIONS RISKS.
Creators: name: Bakhronov, Sherdil
Publisher: name: Zenodo
Year: 2024

description: In recent years, advancements in the field of medical science have introduced new, more efficient, and advanced techniques for managing cardiovascular diseases. Concurrently, there has been a significant evolution in the technology used for the treatment process, including the development of sophisticated, high-quality diagnostic tools, equipment, therapeutic products, and medicines. A review of specialized medical literature and scientific studies from recent decades indicates substantial transformations in the healthcare sector of many nations, especially those with technological advancements, particularly in addressing severe heart-related conditions. The growth of X-ray endovascular diagnostic and therapeutic approaches has been notably swift, supported by the availability of superior and fast diagnostic machinery and tools.
Competitive accretion in embedded stellar cluster
Creators: name: Bonnell, I. A.
name: Bate, M. R.
name: Clarke, C. J.
name: Pringle, J. E.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the physics of gas accretion in young stellar clusters. Accretion in clusters is a dynamic phenomenon as both the stars and the gas respond to the same gravitational potential. Accretion rates are highly non-uniform with stars nearer the centre of the cluster, where gas densities are higher, accreting more than others. This competitive accretion naturally results in both initial mass segregation and a spectrum of stellar masses. Accretion in gas-dominated clusters is well modelled using a tidal-lobe radius instead of the commonly used Bondi-Hoyle accretion radius. This works as both the stellar and gas velocities are under the influence of the same gravitational potential and are thus comparable. The low relative velocity that results means that the tidal radius is smaller than the Bondi-Hoyle radius in these systems. In contrast, when the stars dominate the potential and are virialised, the Bondi-Hoyle radius is smaller than the tidal radius and thus Bondi-Hoyle accretion is a better fit to the accretion rates.
description: 11 pages, 11 figures, MNRAS in press
Duguetia pycnastera Sandwith
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Magnoliales
Annonaceae
Duguetia
Duguetia pycnastera

description: [47] Duguetia pycnastera Sandwith
 Bull. Misc. Inform. Kew 1930 (10): 471 [4 Dec. 1930] (Sandwith 1930).
VERNACULAR NAMES. — Ka: tɨpulu alaidya, yolokan pomɨidyɨ • Nt: gaan kaabasi ana, gaan uku tiki, kaabasi ana, pepee anga sawtu • Br: envira-preta.
 HERBARIUM DATA (FG). — 46 collections at CAY. Sel. exs.: M.-F. Prévost & D. Sabatier 2956.
INVENTORY DATA (FG). — 24 trees in 13 plots; Fmax <1 %; dbhinv = 13.1 cm.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 372, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
title: Transforming the liberal state: gender, class, and ethnicity on the Newfoundland home front, 1914-1918
Creators: name: Westcott, Michael Richard
Publisher: name: Memorial University of Newofundland
Year: 2020

description: In 1914, the Dominion of Newfoundland was thrust into a total war effort. Like other British Dominions, Newfoundland committed its entire civilian population, economy, science, and technology to fighting the war. This dissertation examines how such commitment led to reconceptualizations of gender, class, and ethnicity for the sake of the war effort. Such reconceptualized identities were evident in wartime social phenomena such as prohibition, price control, food rationing, taxation, women’s war work, the treatment of enemy aliens, conscription and food rationing. In each of these cases, Newfoundland’s commitment to the war effort reconfigured gender, class, and ethnicity to help Newfoundland prosecute the war effort, and cope with conditions on the Homefront. This dissertation will argue that alterations to wartime conceptions of gender, class and ethnicity not only allowed Newfoundland to maintain a total war effort but drastically changed the nature of liberal governance in the Dominion. Prior to the war, liberal thinkers focused on the rights of the individual, believing that the government should interfere with the daily lives of individuals as little as possible. As the war progressed, both liberals and Progressives argued that the government owed a duty to maintain the ranks of the Newfoundland Regiment. In return for soldier’s service, many argued that the government owed it to citizens to interfere in free markets, prohibit alcohol, and impose taxation to ensure that citizens maintained a certain standard of living. As a result of the demands of both liberals and Progressives, the Newfoundland government abandoned the traditional liberal focus on the rights of the individual and committed to protecting the rights of all citizens by focusing on the rights of the community. By the end of the war, liberalism in Newfoundland looked much less like Classical Liberalism and much more like a burgeoning Social Liberalism that focused far less on the rights of the individual and far more on the rights of the community.
Are your apps accessible? A GCN-based accessibility checker for low vision users
Creators: name: Zhang, Mengxi
name: Liu, Huaxiao
name: Song, Shenning
name: Chen, Chunyang
name: Huang, Pei
name: Zhao, Jian
Publisher: name: arXiv
Year: 2025
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Context: Accessibility issues (e.g., small size and narrow interval) in mobile applications (apps) lead to obstacles for billions of low vision users in interacting with Graphical User Interfaces (GUIs). Although GUI accessibility scanning tools exist, most of them perform rule-based check relying on complex GUI hierarchies. This might make them detect invisible redundant information, cannot handle small deviations, omit similar components, and is hard to extend. Objective: In this paper, we propose a novel approach, named ALVIN (Accessibility Checker for Low Vision), which represents the GUI as a graph and adopts the Graph Convolutional Neural Networks (GCN) to label inaccessible components. Method: ALVIN removes invisible views to prevent detecting redundancy and uses annotations from low vision users to handle small deviations. Also, the GCN model could consider the relations between GUI components, connecting similar components and reducing the possibility of omission. ALVIN only requires users to annotate the relevant dataset when detecting new kinds of issues. Results: Our experiments on 48 apps demonstrate the effectiveness of ALVIN, with precision of 83.5%, recall of 78.9%, and F1-score of 81.2%, outperforming baseline methods. In RQ2, the usefulness is verified through 20 issues submitted to open-source apps. The RQ3 also illustrates the GCN model is better than other models. Conclusion: To summarize, our proposed approach can effectively detect accessibility issues in GUIs for low vision users, thereby guiding developers in fixing them efficiently.
description: 27 pages, 9 figures, has been published in Information and Software Technology
Virtual axion-like particle complement to Euler-Heisenberg-Schwinger action
Creators: name: Evans, Stefan
name: Rafelski, Johann
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We modify action in an external electromagnetic field to include effects of virtual axion-like particle (ALP) excitations. A measurable addition to QED-Euler-Heisenberg-Schwinger (EHS) action is obtained and incorporated into experimental constraints placed on ALP mass and coupling to two photons. The regime of these constraints in which the ALP vacuum effect surpasses the EHS effect is characterized. We show that probing of the virtual vacuum effect offers an alternative method in search for physics related to ALPs.
description: 5 pages, 2 figures
Additional file 1 of Measuring job stress of dental workers in China during the COVID-19 pandemic: reliability and validity of the hospital consultants’ job stress questionnaire
Creators: name: Long, Huiqing
name: Yan, Li
name: Zhong, Xiaogang
name: Yang, Lu
name: Liu, Yiyun
name: Pu, Juncai
name: Lou, Fangzhi
name: Luo, Shihong
name: Zhang, Yingying
name: Liu, Yang
name: Ji, Ping
name: Jin, Xin
Publisher: name: figshare
Year: 2024
Subjects: subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: Supplementary File 1: A survey of the job stress of Chinese dental medical workers. Supplementary Table 1: The number and reasons for the excluded questionnaires. Supplementary Table 2: The convergent validity and discriminant validity of four-factor model. Supplementary Table 3: Spearman correlation analysis for the revised HCJSQ scale. Supplementary Figure 1: Screen plot of the exploratory factor analysis.
Silver Filled Carbon Nanotubes used as Spectroscopic Enhancers
Creators: name: Garcia-Vidal, F. J.
name: Pitarke, J. M.
name: Pendry, J. B.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We analyse from a theoretical point of view the optical properties of arrays of carbon nanotubes filled with silver. Dependence of these properties on the different parameters involved is studied using a Transfer Matrix formalism able to work with tensor-like dielectric functions and including the full electromagnetic coupling between the nanotubes. We find these structures exhibit very strong linear optical response and hence could be used as spectroscopic enhancers or chemical sensors in the visible range. Very localised surface plasmons, created by the electromagnetic interaction between the capped silver cylinders, are responsible of this enhancing ability. Enhancements of up to $10^6$ in the Raman signal of molecules absorbed on these arrays could be obtained.
description: 4 pages (LaTex), 4 postscript figures, to be published in Physical Review B
Exact Top Yukawa corrections to Higgs boson decay into bottom quarks
Creators: name: Primo, Amedeo
name: Sasso, Gianmarco
name: Somogyi, Gabor
name: Tramontano, Francesco
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this letter we present the results of the exact computation of contributions to the Higgs boson decay into bottom quarks that are proportional to the top Yukawa coupling. Our computation demonstrates that approximate results already available in the literature turn out to be particularly accurate for the three physical mass values of the Higgs boson, the bottom and top quarks. Furthermore, contrary to expectations, the impact of these corrections on differential distributions relevant for the searches of the Higgs boson decaying into bottom quarks at the Large Hadron Collider is rather small.
description: 6 pages, 4 figures