cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
African forest elephant movements depend on time scale and individual behavior
Creators: name: Beirne, Christopher
name: Houslay, Thomas M.
name: Morkel, Peter
name: Clark, Connie J.
name: Fay, Mike
name: Okouyi, Joseph
name: White, Lee J. T.
name: Poulsen, John R.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Article
/631/158
/631/158/2039
/631/158/856
/631/158/672
/631/158/2450
/631/601/18
article

description: Funder: U.S. Fish and Wildlife Service; doi: http://dx.doi.org/10.13039/100000202
description: Abstract: The critically endangered African forest elephant (Loxodonta cyclotis) plays a vital role in maintaining the structure and composition of Afrotropical forests, but basic information is lacking regarding the drivers of elephant movement and behavior at landscape scales. We use GPS location data from 96 individuals throughout Gabon to determine how five movement behaviors vary at different scales, how they are influenced by anthropogenic and environmental covariates, and to assess evidence for behavioral syndromes—elephants which share suites of similar movement traits. Elephants show some evidence of behavioral syndromes along an ‘idler’ to ‘explorer’ axis—individuals that move more have larger home ranges and engage in more ‘exploratory’ movements. However, within these groups, forest elephants express remarkable inter-individual variation in movement behaviours. This variation highlights that no two elephants are the same and creates challenges for practitioners aiming to design conservation initiatives.
Understanding ligands driven mechanism of wild and mutant aryl hydrocarbon receptor in presence of phytochemicals combating Parkinson’s disease: an in silico and in vivo study
Creators: name: Rath, Surya Narayan
name: Lingaraja Jena
name: Patri, Manorama
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Aryl Hydrocarbon Receptor (AhR) is a key player to regulate the expression of a group of enzymes known as cytochrome P450s (CYPs) super family (CYP1A1, CYP1B1, CYP2B6, and CYP2E1) which metabolites diverse endogenous as well as toxic compounds such as Benzo[a] Pyrene (B[a] P) and TCDD. B[a] P induces oxidative stress and causes degeneration of dopaminergic neurons in the midbrain, may leads to Parkinson’s disease (PD). The metabolism of B[a] P through the expression of CYPs is mainly triggered after binding of B[a] P within ligand binding domain of AhR. But, the molecular mechanism of AhR mediated xenobiotic metabolism in presence of diverse phytochemicals is yet to be studied. The solved AhR (PDB ID: 5NJ8, 23–273aa) structure lacks information for ligand binding domain therefore both wild type and mutant models were predicted and screened virtually against sixty one natural compounds. The result proposed withaferin A, withanolide A, withanolide B, withanolide D and withanone of plant Withania Somnifera as efficient ligand against both wild type and mutants (V381A and V381D) AhR models. However, in silico studies hypothesised withanolide A as a potent phytochemical to trigger the AhR mediated gene regulation activity of CYPs. The in vivo study in zebra fish model proposed about the neuro protective role of W. Somnifera leaf extract in presence of B[a]P. The present study would throw lights on the molecular mechanism of phytochemicals mediated AhR activity which may be useful in treatment of PD. Communicated by Ramaswamy H. Sarma
VLT Observations of the Peculiar Globular Cluster NGC6712, III: The Evolved Stellar Population
Creators: name: Paltrinieri, Barbara
name: Ferraro, Francesco R.
name: Paresce, Francesco
name: De Marchi, Guido
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present extensive UBVR photometry of the Galactic globular cluster (GGC) NGC6712 obtained with the ESO Very Large Telescope (VLT) which reach down to two magnitudes below the main sequence turn-off and allows us for the first time to determine the age of this cluster. By using the apparent luminosity of the zero age horizontal branch (ZAHB), $V_{ZAHB}=16.32\pm0.05$ and the stellar main sequence (MS) turn--off (TO) magnitude $V_{TO}=19.82\pm0.10$, we obtain $ΔV_{TO}^{HB}=3.5\pm0.1$ (a value fully compatible with that derived for other clusters) which suggests that, at an age of $\sim 12$ Gyr, NGC 6712 is coeval with other GGC of similar metallicity. We derive interstellar reddening by comparing the position and morphology of the red giant branch (RGB) with a wide variety of reference clusters and find $E(B-V)=0.33\pm0.05$, a value significantly lower than had been determined previously. Assuming this value for the reddening, we determine a true distance modulus of $(m-M)_0 = 14.55$, corresponding to a distance of $\sim 8$ kpc. We find a population of 108 candidate blue straggler stars (BSS), surprisingly large when compared with the typical BSS content of other low concentration clusters. Moreover, we detect a very bright blue star in the core of NGC6712 that might be a post-AGB star. These results, combined with those already presented in two companion papers, strongly support the hypothesis that NGC6712 was, at some early epoch of its history, much more massive and concentrated. The continued interaction with the bulge and the disk of the Galaxy has driven it toward dissolution, and what we now observe is nothing but the {\it remnant} core of a cluster that once was probably one of the most massive in the Galaxy.
description: 31 pages, 12 figures, Astronomical Journal in press
Lifting to Passivity for $\mathcal{H}_2$-Gain-Scheduling Synthesis with Full Block Scalings
Creators: name: Rösinger, Christian A.
name: Scherer, Carsten W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We focus on the $\mathcal{H}_2$-gain-scheduling synthesis problem for time-varying parametric scheduling blocks with scalings. Recently, we have presented a solution of this problem for $D$- and positive real scalings by guaranteeing finiteness of the $\mathcal{H}_2$-norm for the closed-loop system with suitable linear fractional plant and controller representations. In order to reduce conservatism, we extend these methods to full block scalings by designing a triangular scheduling function and by introducing a new lifting technique for gain-scheduled synthesis that enables convexification.
Biochemical consequences of two clinically relevant ND-gene mutations in Escherichia coli respiratory complex I
Creators: name: Nuber, Franziska
name: Schimpf, Johannes
name: Di Rago, Jean-Paul
name: Tribouillard-Tanvier, Déborah
name: Procaccio, Vincent
name: Martin-Negrier, Marie-Laure
name: Trimouille, Aurélien
name: Biner, Olivier
name: Von Ballmoos, Christoph
name: Friedrich, Thorsten
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Article
/631/45/607/1167
/631/45/607/1168
/631/45/612/1237
article

description: Funder: Albert-Ludwigs-Universität Freiburg im Breisgau (1016)
description: Abstract: NADH:ubiquinone oxidoreductase (respiratory complex I) plays a major role in energy metabolism by coupling electron transfer from NADH to quinone with proton translocation across the membrane. Complex I deficiencies were found to be the most common source of human mitochondrial dysfunction that manifest in a wide variety of neurodegenerative diseases. Seven subunits of human complex I are encoded by mitochondrial DNA (mtDNA) that carry an unexpectedly large number of mutations discovered in mitochondria from patients’ tissues. However, whether or how these genetic aberrations affect complex I at a molecular level is unknown. Here, we used Escherichia coli as a model system to biochemically characterize two mutations that were found in mtDNA of patients. The V253AMT-ND5 mutation completely disturbed the assembly of complex I, while the mutation D199GMT-ND1 led to the assembly of a stable complex capable to catalyze redox-driven proton translocation. However, the latter mutation perturbs quinone reduction leading to a diminished activity. D199MT-ND1 is part of a cluster of charged amino acid residues that are suggested to be important for efficient coupling of quinone reduction and proton translocation. A mechanism considering the role of D199MT-ND1 for energy conservation in complex I is discussed.
Why is the black hole entropy (almost) linear in the horizon area?
Creators: name: Gour, Gilad
name: Mayo, Avraham E.
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that essentially pure classical thermodynamics is sufficient to determine Bekenstein's formula for the black hole's entropy, $S=ηA$. We base our reasoning on the minimal assumption that since black body radiation is describable by classical thermodynamics, so is the complete black hole-Hawking radiation system. Furthermore, we argue that any non-linear correction to the black hole entropy must be quantum mechanical in nature. The proportionality coefficient, $η=1/4\ell_P^2$, must be calculated within a semi-classical or full-fledged quantum mechanical framework.
description: 6 pages, references added and corrected, approved for publication in Phys. Rev. D
Strong lensing reveals jets in a sub-microJy radio quiet quasar
Creators: name: Hartley, P.
name: Jackson, N.
name: Sluse, D.
name: Stacey, H. R.
name: Vives-Arias, H.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present e-MERLIN and EVN observations which reveal unambiguous jet activity within radio quiet quasar HS~0810+2554. With an intrinsic flux density of 880~nJy, this is the faintest radio source ever imaged. The findings present new evidence against the idea that radio loud and radio quiet quasars are powered by different underlying radio emission mechanisms, showing instead that the same AGN mechanism can operate as the dominant source of radio emission even in the very lowest radio luminosity quasars. Thanks to strong gravitational lensing, our source is not only visible, but with VLBI is imaged to a scale of just 0.27~pc: the highest ever resolution image of a radio quiet quasar. Brightness temperatures of at least $8.4\times 10^6$~K are associated with two highly compact components, and subsequent modelling of the lensed system has revealed that the components are linearly aligned on opposing sides of the optical quasar core, with the typical morphology of a compact symmetric object (CSO). Given that this source has been found to fall on the radio--FIR correlation, we suggest that the radio--FIR correlation cannot always be used to rule out AGN activity in favour of star-formation activity. The correlation -- or at least its scatter -- may conceal the coexistence of kinetic and radiative feedback modes in AGN. Modelling of the lensing mass itself points to a non-smooth mass distribution, hinting at the presence of dark matter substructure which has manifested as astrometric perturbations of the VLBI lensed images, posing no threat to the CDM paradigm.
description: 16 pages, 10 figures; submitted to MNRAS: v1 includes minor revisions made after reviewer's comments; v2 corrects the order of panels in Fig. 2, and provides a colour image in Fig. 1
On the Gauged Non-compact Spin System
Creators: name: Kim, Sung-Soo
name: Oh, Phillial
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We examine classical and quantum aspects of the planar non-compact spin system coupled with Chern-Simons gauge field in the presence of background charge. We first define our classical spin system as non- relativistic non-linear sigma model in which the order parameter spin takes value in the non-compact manifold ${\cal M}=SU(1,1)/U(1)$. Although the naive model does not allow any finite energy self dual solitons, it is shown that the gauged system admits static Bogomol'nyi solitons with finite energy whose rotationally symmetric soliton solutions are analyzed in detail. We also discuss the large spin limit in which the self-dual equation reduces to the well-known gauged non- linear Schrödinger model or Abelian Higgs model, depending on the choice of the background charge term. Then, we perform quantization of the model. We find that the spin algebra satisfies anomalous commutation relations, and the system is a field theoretic realization of the anyons.
description: 21 pages, Latex, 3 figures included
title: 02_1201
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Renormalization Group Analysis of October Market Crashes
Creators: name: Gluzman, S.
name: Yukalov, V. I.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: The self-similar analysis of time series, suggested earlier by the authors, is applied to the description of market crises. The main attention is payed to the October 1929, 1987 and 1997 stock market crises, which can be successfully treated by the suggested approach. The analogy between market crashes and critical phenomena is emphasized.
description: Corrections are made to match the published version
Canonical BCS Approximation for the Attractive Hubbard Model
Creators: name: Tanaka, K.
name: Marsiglio, F.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We test the canonical BCS wave functions for fixed number of electrons for the attractive Hubbard model. We present results in one dimension for various chain lengths, electron densities, and coupling strengths. The ground-state energy and energy gap to the first excited state are compared with the exact solutions obtained by the Bethe ansatz as well as with the results from the conventional grand-canonical BCS approximations. While the canonical and grand-canonical BCS results are both in very good agreement with the exact results for the ground state energies, improvements due to conserving the electron number in finite systems are manifest in the energy gap. As the system size is increased, the canonical results converge to the grand-canonical ones. The ``parity'' effect that arises from the number parity (even or odd) of electrons are studied with our canonical scheme.
description: 4 pages, 3 figures, HTS99 conference proceeding
Luminosity outburst chemistry in protoplanetary discs: going beyond standard tracers
Creators: name: Wiebe, Dmitri S.
name: Molyarova, Tamara S.
name: Akimkin, Vitaly V.
name: Vorobyov, Eduard I.
name: Semenov, Dmitry A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The chemical influence of luminosity outbursts on the environments of young solar-type stars is explored. Species are categorised into several types according to their response to the outburst. The first and second types imply chemical changes only during the outburst (with slightly different behaviours). These response types are mostly observed close to the star and are caused by icy mantle evaporation. However, mantles recover after the outburst almost immediately. A notable exception is benzene ice, which is accumulated on dust surfaces during and after the outburst, so that its abundance exceeds the pre-outburst level by orders of magnitude. The third type of response is mostly seen at the disc periphery and implies alteration of abundances during the outburst and preservation of these `abnormal' abundances for centuries. This behaviour is typical of organic compounds, like HCOOCH$_3$, CH$_3$CN, CH$_2$CO. Their presence in the dark disc regions can be a manifestation of the past outburst. CO and CO$_2$ only trace past outbursts at the remote disc regions. The outburst changes the C/O ratio, but it quickly returns to the pre-outburst value almost everywhere in the disc. An important factor determining the sensitivity of molecular composition to the outburst is the dust size distribution. The duration of the pre-outburst stage and of the outburst itself influence the chemical effects, if the burst duration is shorter than 50 yr and the duration of the quiescent phase between the bursts is shorter than 100 kyr.
description: Accepted to MNRAS
Cluster Evolution in the ROSAT North Ecliptic Pole Survey
Creators: name: Gioia, I. M.
name: Henry, J. P.
name: Mullis, C. R.
name: Voges, W.
name: Briel, U. G.
name: Boehringer, H.
name: Huchra, J. P.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The deepest region of the ROSAT All-Sky Survey, at the North Ecliptic Pole, has been studied to produce a complete and unbiased X-ray selected sample of clusters of galaxies. This sample is used to investigate the nature of cluster evolution and explore potential implications for large-scale structure models. The survey is 99.6% optically identified. Spectroscopic redshifts have been measured for all the extragalactic identifications. In this Letter, first results on cluster evolution are presented based on a comparison between the number of the observed clusters in the North Ecliptic Pole survey and the number of expected clusters assuming no-evolution models. At z>0.3 there is a deficit of clusters with respect to the local universe which is significant at > 4.7sigma. The evolution appears to commence at L_{0.5-2.0} > 1.8x10^{44} erg s^{-1} in our data. The negative evolution goes in the same direction as the original EMSS result, the results from the 160 deg^{2} survey by Vikhlinin et al. (1998) and the recent results from the RDCS (Rosati et al. 2000). At lower redshifts there is no evidence for evolution, a result in agreement with these and other cluster surveys.
description: 17 pages, 3 figures. Accepted for publication in ApJ Letters
Additional file 2 of Transcriptome and metabolome analyses of cold and darkness-induced pellicle cysts of Scrippsiella trochoidea
Creators: name: Guo, Xin
name: Wang, Zhaohui
name: Liu, Lei
name: Li, Yang
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Plant Biology

description: Additional file 2: Supplementary Figure S1 The species distribution of the result of Nr annotation. Supplementary Figure S2 GO annotation of assembled unigenes for Scrippsiella trochoidea. Supplementary Figure S3 KOG function classification of consensus sequences of assembled unigenes for Scrippsiella trochoidea.
Anisotropic winds in Wolf-Rayet binary identify potential gamma-ray burst progenitor
Creators: name: Callingham, J. R.
name: Tuthill, P. G.
name: Pope, B. J. S.
name: Williams, P. M.
name: Crowther, P. A.
name: Edwards, M.
name: Norris, B.
name: Kedziora-Chudczer, L.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The massive evolved Wolf-Rayet stars sometimes occur in colliding-wind binary systems in which dust plumes are formed as a result of the collision of stellar winds. These structures are known to encode the parameters of the binary orbit and winds. Here, we report observations of a previously undiscovered Wolf-Rayet system, 2XMM J160050.7-514245, with a spectroscopically determined wind speed of $\approx$3400 km s$^{-1}$. In the thermal infrared, the system is adorned with a prominent $\approx$12$''$ spiral dust plume, revealed by proper motion studies to be expanding at only $\approx$570 km s$^{-1}$. As the dust and gas appear coeval, these observations are inconsistent with existing models of the dynamics of such colliding wind systems. We propose that this contradiction can be resolved if the system is capable of launching extremely anisotropic winds. Near-critical stellar rotation is known to drive such winds, suggesting this Wolf-Rayet system as a potential Galactic progenitor system for long-duration gamma-ray bursts.
description: Accepted to Nature Astronomy on 2018 Oct 1. 27 pages, 9 figures, and 4 tables
Identification of human tau-tubulin kinase 1 inhibitors: an integrated e-pharmacophore-based virtual screening and molecular dynamics simulation
Creators: name: Srabanti Jana
name: Singh, Sushil Kumar
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Tau-tubulin kinase 1 inhibitors inhibit tau protein phosphorylation on Ser198, Ser199, Ser202, Ser422, and also in paired helical filaments. We developed receptor-based pharmacophore models by exploiting three TTBK1 protein structures, i.e., 4NFN, 4BTM, and 4BTK. The integrated e-pharmacophore based virtual screening and molecular dynamics simulation recognized four hits viz. ZINC14644839, ZINC00012956, ZINC91332506, and ZINC69775110 as TTBK1 inhibitors. The Glide XP docking energies (−8.48 to −10.71 kcal.mol−1) of hits were better than cocrystal ligand of 4NFN protein structure (−8.37 kcal.mol−1). Among the hits, ZINC14644839 possessed best binding energy with four hydrogen bonding interactions. The inhibitors showed acceptable calculated ADME and blood-brain barrier permeability properties and could be potential TTBK1 inhibitors for neurodegenerative diseases. Communicated by Ramaswamy H. Sarma
On the Locality of Physics in Metals, Semiconductors, and Insulators
Creators: name: Ismail-Beigi, Sohrab
name: Arias, Tomas
Publisher: name: arXiv
Year: 1998
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an analytical study of the spatial decay rate $γ$ of the one-particle density matrix $ρ(\vec r,\vec r')\sim\exp(-γ|\vec r-\vec r'|)$ for systems described by single particle orbitals in periodic potentials in arbitrary dimensions. This decay reflects electronic locality in condensed matter systems and is also crucial for O(N) density functional methods. We find that $γ$ behaves contrary to the conventional wisdom that generically $γ\propto\sqrtΔ$ in insulators and $γ\propto\sqrt{T}$ in metals, where $Δ$ is the direct band gap and $T$ the temperature. Rather, in semiconductors $γ\proptoΔ$, and in metals at low temperature $γ\propto T$.
description: Will appear in March 8th 1999 issue of Physical Review Letters
title: 01_1289
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
On new classes of explicit solutions of Dirac, dynamical Dirac and Dirac--Weyl systems with non-vanishing at infinity potentials, their properties and applications
Creators: name: Sakhnovich, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 34A05, 34B20, 35Q41, 37C80, 74H05

description: Our GBDT version of Bäcklund-Darboux transformation is applied to the construction of wide classes of new explicit solutions of self-adjoint and skew-self-adjoint Dirac systems, dynamical Dirac and Dirac--Weyl systems. That is, we construct explicit solutions of systems with non-vanishing at infinity potentials. In particular, the cases of steplike potentials and power growth of potentials are treated. It is essential (especially, for dynamical case) that the generalised matrix eigenvalues are used in GBDT instead of the usual eigenvalues (and those matrix eigenvalues are not necessarily diagonal). The connection of Dirac--Weyl system with graphene theory is discussed. Explicit expressions for Weyl--Titchmarsh functions are derived.
description: This paper essentially develops some ideas from our papers arXiv:nlin/0402055 and arXiv:1609.03451
Associations of social jetlag with depressive symptoms among adults in Southern China: a cross-sectional study
Creators: name: Feng, Jie
name: Meng, Xin
name: Wang, Chao
name: Ke, Pan
name: Tian, Qingfeng
name: He, Yan
name: Yin, Xiaoxv
name: Lu, Congying
name: Lu, Zuxun
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Marine Biology
subject: Cancer
subject: Science Policy
subject: Mental Health

description: To investigate the associations between social jetlag and depressive symptoms and further analyze the interaction of social jetlag and chronic diseases on depressive symptoms among adults. Data were derived from a cross-sectional survey. Information on social jetlag, depressive symptoms, demographic characteristics, lifestyles, and health situations were collected via a structured self-administered questionnaire. The multivariable logistic regression analyses and restricted cubic splines regression were performed to test the association between social jetlag and depressive symptoms. The multiplicative model was applied to analyze the interaction of social jetlag and chronic disease on depressive symptoms. A total of 5818 adults were included and the prevalence of social jetlag was 22.95%. After multivariable adjustment, adults who experienced more than 2 hours of social jetlag had a significantly greater risk of depressive symptoms (OR = 1.43,95%CI:1.00–2.05, P = 0.049). Compared with participants having<1 hour of social jetlag and no chronic disease, participants having chronic disease were more likely to report depressive symptoms(OR = 3.22,95%CI = 2.59–4.00, P < 0.001). Moreover, among those who have chronic disease, the greater the social jetlag they reported, the greater risk of depressive symptoms they have (OR = 3.81,95%CI = 2.77–5.33, P < 0.001; OR = 4.08,95%CI = 2.24–7.43, P < 0.001). Social jetlag was linearly associated the with risk of depressive symptoms, according to restricted cubic splines. This study shows that 22.95% adults experience more than 1 hour of social jetlag. Social jetlag was positively associated with an increased risk of depressive symptoms. Among those who have chronic disease, the greater the social jetlag they reported, the greater risk of depressive symptoms they have.
Localization and exact current compensation in the quantum Hall effect
Creators: name: Shizuya, K.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A field-theoretic formulation of a planar Hall-electron system with edges is presented and some fundamental aspects of the integer quantum Hall effect are studied with emphasis on clarifying general symmetry-based consequences of localization. It is shown, in particular, that the immobility of localized electron states and current compensation by extended electron states, both crucial for quantization of the Hall conductance, are derived through the operation of magnetic translation of localized electron states alone. They actually are consequences of gauge invariance and hold under general circumstances with both level mixing and electron edge states taken into account.
description: 10 pages, Revtex, 1 figure, to appear in Phys. Rev. B
Generalized Embedding Machines for Recommender Systems
Creators: name: Yang, Enneng
name: Xin, Xin
name: Shen, Li
name: Guo, Guibing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Factorization machine (FM) is an effective model for feature-based recommendation which utilizes inner product to capture second-order feature interactions. However, one of the major drawbacks of FM is that it couldn't capture complex high-order interaction signals. A common solution is to change the interaction function, such as stacking deep neural networks on the top of FM. In this work, we propose an alternative approach to model high-order interaction signals in the embedding level, namely Generalized Embedding Machine (GEM). The embedding used in GEM encodes not only the information from the feature itself but also the information from other correlated features. Under such situation, the embedding becomes high-order. Then we can incorporate GEM with FM and even its advanced variants to perform feature interactions. More specifically, in this paper we utilize graph convolution networks (GCN) to generate high-order embeddings. We integrate GEM with several FM-based models and conduct extensive experiments on two real-world datasets. The results demonstrate significant improvement of GEM over corresponding baselines.
description: 8 pages
A Model for the Optical Absorption in Pororus Silicon
Creators: name: Datta, Shouvik
name: Narasimhan, K. L.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this paper, we report on the optical absorption in porous silicon. We model the absorption process assuming that porous silicon is a pseudo 1D material system having a distribution of band gaps. We show that in order to explain the absorption we specifically need to invoke - (a) k is not conserved in optical transitions, (b) the oscillator strength of these transitions depends on the size of the nanostructure in which absorption takes place and (c) the distribution of band gaps significantly influences the optical absorption. We also show that it is not possible to extract the band gap of porous silicon from a plot of $\sqrt{α\hbarω}$ vs $\hbarω$.
description: 18 pages, 11 figures . Submitted to Physical Review B
Einstein, $σ$-model and Ernst-type equations and non-isospectral GBDT version of Darboux transformation
Creators: name: Sakhnovich, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35Q51, 35Q76, 83C15, 37J05

description: We present a non-isospectral GBDT version of Bäcklund-Darboux transformation for the gravitational and $σ$-model equations. New families of explicit solutions correspond to the case of GBDT with non-diagonal generalized matrix eigenvalues. An interesting integrable Ernst-type system, the auxiliary linear systems of which are non-isospectral canonical systems, is studied as well.
description: Section 4 of this paper is an important development of our work arXiv:math-ph/0703072. Some references and discussions are added in Section 4 of the second version
The imprint of X-ray photoevaporation of planet-forming discs on the orbital distribution of giant planets
Creators: name: Monsch, Kristina
name: Ercolano, Barbara
name: Picogna, Giovanni
name: Preibisch, Thomas
name: Rau, Markus Michael
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: High energy radiation from a planet host star can have strong influence on the final habitability of a system through several mechanisms. In this context we have constructed a catalogue containing the X-ray luminosities, as well as basic stellar and planetary properties of all known stars hosting giant planets (> 0.1 Mjup) that have been observed by the Chandra X-ray Observatory, XMM-Newton and/or ROSAT. Specifically in this paper we present a first application of this catalogue to search for a possible imprint of X-ray photoevaporation of planet-forming discs on the present-day orbital distribution of the observed giant planets. We found a suggestive void in the semi-major axis, a, versus X-ray luminosity, Lx, plane, roughly located between a ~ 0.05-1 au and Lx ~10^27-10^29 erg/s, which would be expected if photoevaporation played a dominant role in the migration history of these systems. However, due to the small observational sample size, the statistical significance of this feature cannot be proven at this point.
description: 12 pages; accepted for publication on December 4, 2018 in MNRAS. The catalog presented in this paper is available for download on Harvard Dataverse (https://doi.org/10.7910/DVN/FPXFA5), updated references
Identification of human tau-tubulin kinase 1 inhibitors: an integrated e-pharmacophore-based virtual screening and molecular dynamics simulation
Creators: name: Srabanti Jana
name: Singh, Sushil Kumar
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Tau-tubulin kinase 1 inhibitors inhibit tau protein phosphorylation on Ser198, Ser199, Ser202, Ser422, and also in paired helical filaments. We developed receptor-based pharmacophore models by exploiting three TTBK1 protein structures, i.e., 4NFN, 4BTM, and 4BTK. The integrated e-pharmacophore based virtual screening and molecular dynamics simulation recognized four hits viz. ZINC14644839, ZINC00012956, ZINC91332506, and ZINC69775110 as TTBK1 inhibitors. The Glide XP docking energies (−8.48 to −10.71 kcal.mol−1) of hits were better than cocrystal ligand of 4NFN protein structure (−8.37 kcal.mol−1). Among the hits, ZINC14644839 possessed best binding energy with four hydrogen bonding interactions. The inhibitors showed acceptable calculated ADME and blood-brain barrier permeability properties and could be potential TTBK1 inhibitors for neurodegenerative diseases. Communicated by Ramaswamy H. Sarma
Effect of COVID-19 response policies on walking behavior in US cities
Creators: name: Hunter, Ruth F.
name: Garcia, Leandro
name: De Sa, Thiago Herick
name: Zapata-Diomedi, Belen
name: Millett, Christopher
name: Woodcock, James
name: Pentland, Alex ’Sandy’
name: Moro, Esteban
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Article
/692/499
/639/705/1041
/129
/141
article

description: Abstract: The COVID-19 pandemic is causing mass disruption to our daily lives. We integrate mobility data from mobile devices and area-level data to study the walking patterns of 1.62 million anonymous users in 10 metropolitan areas in the United States. The data covers the period from mid-February 2020 (pre-lockdown) to late June 2020 (easing of lockdown restrictions). We detect when users were walking, distance walked and time of the walk, and classify each walk as recreational or utilitarian. Our results reveal dramatic declines in walking, particularly utilitarian walking, while recreational walking has recovered and even surpassed pre-pandemic levels. Our findings also demonstrate important social patterns, widening existing inequalities in walking behavior. COVID-19 response measures have a larger impact on walking behavior for those from low-income areas and high use of public transportation. Provision of equal opportunities to support walking is key to opening up our society and economy.
On the inversion of the block double-structured and of the triple-structured Toeplitz matrices and on the corresponding reflection coefficients
Creators: name: Roitberg, Inna
name: Sakhnovich, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 15A09, 15B05, 94A99

description: The results on the inversion of convolution operators as well as Toeplitz (and block Toeplitz) matrices in the $1$-D (one-dimensional) case are classical and have numerous applications. Last year, we considered the $2$-D case of Toeplitz-block Toeplitz (TBT) matrices, described a minimal information, which is necessary to recover the inverse matrices, and gave a complete characterisation of the inverse matrices. Now, we develop our approach for the more complicated cases of block TBT-matrices and $3$-D Toeplitz matrices.
description: in this preprint, we further develop the approach presented in arXiv:1704.02267
Search for young transiting exoplanets within YETI project
Creators: name: Zieliński, P.
name: Janík, J.
name: Neuhäuser, R.
name: Mugrauer, M.
name: Garai, Z.
name: Pribulla, T.
name: Dróżdż, M.
name: Ogłoza, W.
name: Team, YETI
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Young Exoplanet Transit Initiative (YETI) is a project focused on the photometric monitoring of stellar open clusters in order to find new young transiting exoplanets, eclipsing binaries and study other variability phenomena. Here, we present the status of the initiative and plans for future photometric campaigns of three open clusters younger than 50 Myr: NGC 869, NGC 884 and IC 4665, by using the world-wide one meter-class telescope network. Based on the experience gained by several astronomical observatories included in this network, dedicated numerical algorithms and recent results obtained during the first observing campaigns, we expect to confirm several young transiting objects: low-mass stars, brown dwarfs and exoplanets. The photometric precision given for a typical telescope used in this project, allows for transit detection of Jupiter-size planets at close-in orbits with periods up to ~30 days and also hundreds of new various variable stars.
description: 5 pages, Proceedings of the Polish Astronomical Society, Vol. 7; XXXVIII Polish Astronomical Society Meeting, held 11-14 September, 2017 in Zielona G\'ora, Poland
Public libraries on TikTok – emerging platform vernaculars of communication and distribution
Creators: name: Soelseth, Camilla Holm
name: Bøyum, Idunn
name: Colbjørnsen, Terje
name: Pharo, Nils
name: Tallerås, Kim
Publisher: name: Taylor & Francis
Year: 2025
Subjects: Space Science
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified

description: Libraries have long embedded social media platforms into their work practices, TikTok being a comparatively new addition. After its international launch, TikTok quickly became a popular platform, especially a space for ‘book talk’, called BookTok. The literature on libraries and TikTok is sparse, and little research has been done to investigate actual TikTok usage by libraries systematically. There is also a methodological advancement to be made in how to approach hashtags as chains when analyzing social media content. In this paper, we explore how Norwegian public libraries use TikTok, employing a dataset of 3248 posts as the basis for our analysis. The study combines digital methods approaches for data collection and analysis with traditional knowledge organization approaches, focusing on hashtags and hashtag chains as part of the complex socio-technical and algorithmic system. Our study has focused on the interpretive possibilities of hashtags as a constitutive element of the platform vernacular. We find that libraries contribute to the ongoing construction and maintenance of BookTok and LibraryTok, and the intersection of these sides through book recommendations and events. We further introduce the concept of daisy chains, signifying a deliberate but unsystematic tactic of tagging posts, part of the platform vernacular, serving the dual act of influencing distribution and communication in a complex algorithmic system.
Semi-parametric TEnsor Factor Analysis by Iteratively Projected Singular Value Decomposition
Creators: name: Chen, Elynn Y.
name: Xia, Dong
name: Cai, Chencheng
name: Fan, Jianqing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: This paper introduces a general framework of Semi-parametric TEnsor Factor Analysis (STEFA) that focuses on the methodology and theory of low-rank tensor decomposition with auxiliary covariates. Semi-parametric TEnsor Factor Analysis models extend tensor factor models by incorporating auxiliary covariates in the loading matrices. We propose an algorithm of iteratively projected singular value decomposition (IP-SVD) for the semi-parametric estimation. It iteratively projects tensor data onto the linear space spanned by the basis functions of covariates and applies singular value decomposition on matricized tensors over each mode. We establish the convergence rates of the loading matrices and the core tensor factor. The theoretical results only require a sub-exponential noise distribution, which is weaker than the assumption of sub-Gaussian tail of noise in the literature. Compared with the Tucker decomposition, IP-SVD yields more accurate estimators with a faster convergence rate. Besides estimation, we propose several prediction methods with new covariates based on the STEFA model. On both synthetic and real tensor data, we demonstrate the efficacy of the STEFA model and the IP-SVD algorithm on both the estimation and prediction tasks.
description: 44 pages, 8 figures
Two-dimensional polymer networks at a mixed boundary: Surface and wedge exponents
Creators: name: Batchelor, M. T.
name: Bennett-Wood, D.
name: Owczarek, A. L.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We provide general formulae for the configurational exponents of an arbitrary polymer network connected to the surface of an arbitrary wedge of the two-dimensional plane, where the surface is allowed to assume a general mixture of boundary conditions on either side of the wedge. We report on a comprehensive study of a linear chain by exact enumeration, with various attachments of the walk's ends to the surface, in wedges of angles $π/2$ and $π$, with general mixed boundary conditions.
description: 4 pages, Latex2e, 3 figures, Eur. Phys. J. B macros