cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On Coulomb drag in double layer systems
Creators: name: Amorim, B
name: Peres, N M R
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We argue, for a wide class of systems including graphene, that in the low temperature, high density, large separation and strong screening limits the drag resistivity behaves as d^{-4}, where d is the separation between the two layers. The results are independent of the energy dispersion relation, the dependence on momentum of the transport time, and the wave function structure factors. We discuss how a correct treatment of the electron-electron interactions in an inhomogeneous dielectric background changes the theoretical analysis of the experimental drag results of Ref. [1]. We find that a quantitative understanding of the available experimental data [1] for drag in graphene is lacking.
description: http://iopscience.iop.org/0953-8984/24/33/335602/
Conservation in first introns is positively associated with the number of exons within genes and the presence of regulatory epigenetic signals
Creators: name: Park, Seung Gu
name: Hannenhalli, Sridhar
name: Choi, Sun Shim
Publisher: name: Springer Nature
Year: 2014
Subjects: Regulatory Signal
Proximal Promoter
Chromatin Mark
Encode Project
CTCF Binding Site

description: Genomes of higher eukaryotes have surprisingly long first introns and in some cases, the first introns have been shown to have higher conservation relative to other introns. However, the functional relevance of conserved regions in the first introns is poorly understood. Leveraging the recent ENCODE data, here we assess potential regulatory roles of conserved regions in the first intron of human genes. We first show that relative to other downstream introns, the first introns are enriched for blocks of highly conserved sequences. We also found that the first introns are enriched for several chromatin marks indicative of active regulatory regions and this enrichment of regulatory marks is correlated with enrichment of conserved blocks in the first intron; the enrichments of conservation and regulatory marks in first intron are not entirely explained by a general, albeit variable, bias for certain marks toward the 5’ end of introns. Interestingly, conservation as well as proportions of active regulatory chromatin marks in the first intron of a gene correlates positively with the numbers of exons in the gene but the correlation is significantly weakened in second introns and negligible beyond the second intron. The first intron conservation is also positively correlated with the gene’s expression level in several human tissues. Finally, a gene-wise analysis shows significant enrichments of active chromatin marks in conserved regions of first introns, relative to the conserved regions in other introns of the same gene. Taken together, our analyses strongly suggest that first introns are enriched for active transcriptional regulatory signals under purifying selection.
Demographic fluctuations in a population of anomalously diffusing individuals
Creators: name: Olla, Piero
Publisher: name: arXiv
Year: 2011
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The phenomenon of spatial clustering induced by death and reproduction in a population of anomalously diffusing individuals is studied analytically. The possibility of social behaviors affecting the migration strategies has been taken into exam, in the case anomalous diffusion is produced by means of a continuous time random walk (CTRW). In the case of independently diffusing individuals, the dynamics appears to coincide with that of (dying and reproducing) Brownian walkers. In the strongly social case, the dynamics coincides with that of non-migrating individuals. In both limits, the growth rate of the fluctuations becomes independent of the Hurst exponent of the CTRW. The social behaviors that arise when transport in a population is induced by a spatial distribution of random traps, have been analyzed.
description: 10 pages, 6 figures
Evaluations of shallot genotypes for resistance against fusarium basal rot (Fusarium oxysporum f. sp. cepae) disease
Creators: name: Assefa Sintayehu A, *, Chemeda Fininsa A, Seid Ahmed B, P.K. Sakhuja A
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2011

description: No abstract available for this resource
On applications of Razborov's flag algebra calculus to extremal 3-graph theory
Creators: name: Falgas-Ravry, Victor
name: Vaughan, Emil R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C35, 05C65

description: In this paper, we prove several new Turán density results for 3-graphs with independent neighbourhoods. We show: π(K_4^-, C_5, F_{3,2})=12/49, π(K_4^-, F_{3,2})=5/18, and π(J_4, F_{3,2})=π(J_5, F_{3,2})=3/8, where J_t is the 3-graph consisting of a single vertex x together with a disjoint set A of size t and all $\binom{|A|}{2}$ 3-edges containing x. We also prove two Turán density results where we forbid certain induced subgraphs: π(F_{3,2}, induced K_4^-)=3/8 and π(K_5, 5-set spanning 8 edges)=3/4. The latter result is an analogue for K_5 of Razborov's result that π(K_4, 4-set spanning 1 edge)=5/9. We give several new constructions, conjectures and bounds for Turán densities of 3-graphs which should be of interest to researchers in the area. Our main tool is `Flagmatic', an implementation of Razborov's flag algebra calculus, which we are making publicly available. In a bid to make the power of Razborov's method more widely accessible, we have tried to make Flagmatic as user-friendly as possible, hoping to remove thereby the major hurdle that needs to be cleared before using the flag algebra calculus. Finally, we spend some time reflecting on the limitations of our approach, and in particular on which problems we may be unable to solve. Our discussion of the `complexity barrier' for the flag algebra calculus may be of general interest.
description: 31 pages, 5 figures; version 2 corrects some minor mistakes
GWAS and drug targets
Creators: name: Cao, Chen
name: Moult, John
Publisher: name: Springer Nature
Year: 2014
Subjects: Drug Target
Random Forest
Genome Wide Association Study
Kawasaki Disease
Palifermin

description: Genome wide association studies (GWAS) have revealed a large number of links between genome variation and complex disease. Among other benefits, it is expected that these insights will lead to new therapeutic strategies, particularly the identification of new drug targets. In this paper, we evaluate the power of GWAS studies to find drug targets by examining how many existing drug targets have been directly 'rediscovered' by this technique, and the extent to which GWAS results may be leveraged by network information to discover known and new drug targets. We find that only a very small fraction of drug targets are directly detected in the relevant GWAS studies. We investigate two possible explanations for this observation. First, we find evidence of negative selection acting on drug target genes as a consequence of strong coupling with the disease phenotype, so reducing the incidence of SNPs linked to the disease. Second, we find that GWAS genes are substantially longer on average than drug targets and than all genes, suggesting there is a length related bias in GWAS results. In spite of the low direct relationship between drug targets and GWAS reported genes, we found these two sets of genes are closely coupled in the human protein network. As a consequence, machine-learning methods are able to recover known drug targets based on network context and the set of GWAS reported genes for the same disease. We show the approach is potentially useful for identifying drug repurposing opportunities. Although GWA studies do not directly identify most existing drug targets, there are several reasons to expect that new targets will nevertheless be discovered using these data. Initial results on drug repurposing studies using network analysis are encouraging and suggest directions for future development.
What Impact Do New Homologs Have on Detecting Interdomain Horizontal Gene Transfer in Eukaryotes? A Reassessment of Katz (2015)
Creators: name: Anonymous
Publisher: name: Zenodo
Year: 2025

description: This file contains two subdirectories: one for Gblocks-refined alignments in FASTA format and another for phylogenetic trees in Nexus format, constructed from candidate interdomain HGT events reported in Katz (2015) and updated with current NCBI data. For clarity, each file is labeled with the candidate's ID from the NCBI NR database and the corresponding OG5 code from Katz (2015). The analysis reveals new homologs that may challenge—and potentially refute—many of the previously proposed horizontal gene transfer candidates between prokaryotes and eukaryotes in Katz (2015).
A composite light scalar, electro-weak symmetry breaking and the recent LHC searches
Creators: name: Elander, Daniel
name: Piai, Maurizio
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct a model in which electro-weak symmetry breaking is induced by a strongly coupled sector, which is described in terms of a five-dimensional model in the spirit of the bottom-up approach to holography. We compute the precision electro-weak parameters, and identify regions of parameter space allowed by indirect tests. We compute the spectrum of scalar and vector resonances, which contains a set of parametrically light states that can be identified with the electroweak gauge bosons and a light dilaton. There is then a little desert, up to 2-3 TeV, where towers of resonances of the vector, axial-vector and scalar particles appear.
description: Version accepted for publication. Two footnotes and one reference added
Reduction of Interaction Delays in Networks
Creators: name: Lücken, Leonhard
name: Pade, Jan Philipp
name: Knauer, Kolja
name: Yanchuk, Serhiy
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Delayed interactions are a common property of coupled natural systems and therefore arise in a variety of different applications. For instance, signals in neural or laser networks propagate at finite speed giving rise to delayed connections. Such systems are often modeled by delay differential equations with discrete delays. In realistic situations, these delays are not identical on different connections. We show that by a componentwise timeshift transformation it is often possible to reduce the number of different delays and simplify the models without loss of information. We identify dynamic invariants of this transformation, determine its capabilities to reduce the number of delays and interpret these findings in terms of the topology of the underlying graph. In particular, we show that networks with identical sums of delay times along the fundamental semicycles are dynamically equivalent and we provide a normal form for these systems. We illustrate the theory using a network motif of coupled Mackey-Glass systems with 8 different time delays, which can be reduced to an equivalent motif with three delays.
The implications of disease threat for attitudes, behavior, and culture
Creators: name: Murray, Damian
Publisher: name: University of British Columbia
Year: 2013

description: Disease threat has posed one of the greatest threats to human survival throughout history. However, only recently has research begun to elucidate humans’ psychological, behavioral, and cultural adaptations to the threat posed by infectious disease. Across a set of empirical studies using both individuals and cultures as units of analysis, this thesis investigates the implications of disease threat for attitudes, behavior, and cultural value systems. Chapter Two reports results from an experiment which show that perceived threat of disease is linked to more sexually restrictive attitudes across three measures. These results emerged most clearly for women. Chapter Three reports results from an experiment which show that temporary disease salience leads to relatively higher behavioral and attitudinal conformity (across four diverse measures). Further analyses show that dispositional worry about disease transmission is also positively associated with conformity. Chapter Four introduces a tool—an historical disease index—for investigating the origins of cross-cultural differences. Analyses reveal that this historical disease index is a better predictor of cross-cultural differences than are contemporary measures of disease. Chapter Five reports two studies which investigate the relationship between regional variation in disease prevalence and cross-cultural variation in authoritarianism. Results from Study 1 show that country-level mean authoritarian personality scores largely mediate the previously-documented relationship between pathogen prevalence and institutional authoritarianism. Using a sample of traditional societies (from the Standard Cross-Cultural sample), results from Study 2 reveal a link between historical pathogen prevalence and twelve measures of authoritarian governance. These relationships cannot be accounted for by controlling for other threats to human welfare. Chapter Six reports results from a cross-national analysis showing that historical disease prevalence positively predicts five measures of scientific and technological innovation. This relationship cannot be accounted for by variation in wealth, education, or life expectancy. Further analyses reveal that this relationship is largely mediated by cross-national variation in individualism and collectivism. Chapter Seven considers the possible causal mechanisms by which disease influences these individual and cultural differences, and considers the implications of this set of results.
Conserved mass models with stickiness and chipping
Creators: name: Bondyopadhyay, Sourish
name: Mohanty, P. K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study a chipping model in one dimensional periodic lattice with continuous mass, where a fixed fraction of the mass is chipped off from a site and distributed randomly among the departure site and its neighbours; the remaining mass sticks to the site. In the asymmetric version, the chipped off mass is distributed among the site and the right neighbour, whereas in the symmetric version the redistribution occurs among the two neighbours. The steady state mass distribution of the model is obtained using a perturbation method for both parallel and random sequential updates. In most cases, this perturbation theory provides a steady state distribution with reasonable accuracy.
description: 17 pages, 4 eps figures
Appendix to "Approximating perpetuities"
Creators: name: Knape, Margarete
name: Neininger, Ralph
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J05, 65C05, 68U20, 60E05

description: An algorithm for perfect simulation from the unique solution of the distributional fixed point equation $Y=_d UY + U(1-U)$ is constructed, where $Y$ and $U$ are independent and $U$ is uniformly distributed on $[0,1]$. This distribution comes up as a limit distribution in the probabilistic analysis of the Quickselect algorithm. Our simulation algorithm is based on coupling from the past with a multigamma coupler. It has four lines of code.
Can a Future Choice Affect a Past Measurement's Outcome?
Creators: name: Aharonov, Yakir
name: Cohen, Eliahu
name: Elitzur, Avshalom C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An EPR experiment is studied where each particle within the entangled pair undergoes a few weak measurements (WMs) along some pre-set spin orientations, with the outcomes individually recorded. Then the particle undergoes one strong measurement along an orientation chosen at the last moment. Bell-inequality violation is expected between the two final measurements within each EPR pair. At the same time, statistical agreement is expected between these strong measurements and the earlier weak ones performed on that pair. A contradiction seemingly ensues: (i) Bell's theorem forbids spin values to exist prior to the choice of the orientation measured; (ii) A weak measurement is not supposed to determine the outcome of a successive strong one; and indeed (iii) Almost no disentanglement is inflicted by the WMs; and yet (iv) The outcomes of weak measurements statistically agree with those of the strong ones, suggesting the existence of pre-determined values, in contradiction with (i). Although the conflict can be solved by mere mitigation of the above restrictions, the most reasonable resolution seems to be that of the Two-State-Vector Formalism (TSVF), namely, that the choice of the experimenter has been encrypted within the weak measurement's outcomes, even before the experimenters themselves know what their choice will be.
description: 25 pages, 2 figures
An Integrated Data Framework for Policy Guidance in Times of Dynamic Economic Shocks
Creators: name: Dörr
name: Kinne
name: , Lenz
name: Licht
name: Winker
Publisher: name: Zenodo
Year: 2021
Subjects: COVID-19
impact assessment
corporate sector
corporate website
web mining
NLP

description: Usually, official and survey-based statistics guide policy makers in their choice of response instruments to economic crises. However, in an early phase, after a sudden and unforeseen shock has caused incalculable and fast-changing dynamics, data from traditional statistics are only available with non-negligible time delays. This leaves policy makers uncertain about how to most effectively manage their economic countermeasures to support businesses, especially when they need to respond quickly, as in the COVID-19 pandemic. Given this information deficit, we propose a framework that guides policy makers throughout all stages
 of an unforeseen economic shock by providing timely and reliable data as a basis to make informed decisions. We do so by combining early stage ‘ad hoc’ web analyses, ‘follow-up’ business surveys, and ‘retrospective’ analyses of firm outcomes. A particular focus of our framework is on assessing the early effects of the pandemic, using highly dynamic and largescale data from corporate websites. Most notably, we show that textual references to the coronavirus pandemic published on a large sample of company websites and state-of-the-art text analysis methods allow to capture the heterogeneity of the crisis’ effects at a very early
 stage and entail a leading indication on later movements in firm credit ratings.
GIT for polarized curves
Creators: name: Bini, Gilberto
name: Felici, Fabio
name: Melo, Margarida
name: Viviani, Filippo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We investigate GIT quotients of polarized curves. More specifically, we study the GIT problem for the Hilbert and Chow schemes of curves of degree d and genus g in a projective space of dimension d-g, as the ratio v:=d/(2g-2) decreases. We prove that the first three values of v at which the GIT quotients change are given by v=4, 3.5, 2. We show that, for v>4, L. Caporaso's results hold true for both Hilbert and Chow semistability. If 3.5
description: 170 pages; final version, to appear in Lecture Notes in Mathematics
Phase transition and monopole production in supergravity inflation
Creators: name: Kamada, Kohei
name: Nakayama, Kazunori
name: Yokoyama, Jun'ichi
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In F-term supergravity inflation models, scalar fields other than the inflaton generically receive a Hubble induced mass, which may restore gauge symmetries during inflation and phase transitions may occur during or after inflation as the Hubble parameter decreases. We study monopole (and domain wall) production associated with such a phase transition in chaotic inflation in supergravity and obtain a severe constraint on the symmetry breaking scale which is related with the tensor-to-scalar ratio. Depending on model parameters, it is possible that monopoles are sufficiently diluted to be free from current constraints but still observable by planned experiments.
description: 26 pages, 4 figures; references added, typos corrected, published version; v3, references added
Matrix algorithm for solving Schroedinger equations with position-dependent mass or complex optical potentials
Creators: name: Foerster, Johann
name: Saenz, Alejandro
name: Wolff, Ulli
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We represent low dimensional quantum mechanical Hamiltonians by moderately sized finite matrices that reproduce the lowest O(10) boundstate energies and wave functions to machine precision. The method extends also to Hamiltonians that are neither Hermitian nor PT symmetric and thus allows to investigate whether or not the spectra in such cases are still real. Furthermore, the approach is especially useful for problems in which a position-dependent mass is adopted, for example in effective-mass models in solid-state physics or in the approximate treatment of coupled nuclear motion in molecular physics or quantum chemistry. The performance of the algorithm is demonstrated by considering the inversion motion of different isotopes of ammonia molecules within a position-dependent-mass model and some other examples of one- and two-dimensional Hamiltonians that allow for the comparison to analytical or numerical results in the literature.
description: 10 pages, 5 figures. Several clarifications in the text and new sect. IV.G. Version to appear in Phys. Rev. E
Quantum process tomography of single photon quantum channels with controllable decoherence
Creators: name: Shaham, A.
name: Eisenberg, H. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We characterized unital quantum channels of single photon polarization qubits. The channels are composed of two birefringent crystals and wave-plates, where their decoherence properties are controlled. An experimental comparison between two different depolarizing configurations was performed using a quantum process tomography procedure. The results are with a high fidelity to the theoretical predictions.
description: 8 pages, 5 figures, submitted to Physica Scripta
Lyman alpha Luminosity Functions at Redshift z = 4.5
Creators: name: Zheng, Zhen-Ya
name: Finkelstein, Steven L.
name: Finkelstein, Keely
name: Tilvi, Vithal
name: Rhoads, James E.
name: Malhotra, Sangeeta
name: Wang, Jun-Xian
name: Miller, Neal
name: Hibon, Pascale
name: Xia, Lifang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a spectroscopically confirmed sample of Lyman alpha emitting galaxies (LAEs) at z ~ 4.5 in the Extended Chandra Deep Field South (ECDFS), which we combine with a sample of z ~ 4.5 LAEs from the Large Area Lyman Alpha (LALA) survey to build a unified Lya luminosity function (LF). We spectroscopically observed 64 candidate LAEs in the ECDFS, confirming 46 objects as z~4.5 LAEs. We did not detect significant flux from neither C_iv 1549Å nor the He_ii 1640Å emission in individual LAE spectra, even with a coadded spectrum. With the coadded line ratio of He_ii to Lya constraining the Population III star formation rate (SFR) to be <0.3% of the total SFR, and <1.25% of the observed SFR (both at the 2-$σ$ level). Only one LAE was detected in both the X-ray and radio, while the other objects remained undetected, even when stacked. The Lya LF in our two deepest narrowband filters in the ECDFS differ at >2$σ$ significance, and the product $L^*Φ^*$ differs by a factor of >3. Similar LF differences have been used to infer evolution in the neutral gas fraction in the intergalactic medium at z>6, yet here the difference is likely due to cosmic variance, given that the two samples are from adjoining line-of-sight volumes. Combining our new sample of LAEs with those from previous LALA narrowband surveys at z = 4.5, we obtain one of the best measured Lya LFs to date of L* = 42.83 $\pm$ 0.06 and $Φ^*$ = -3.48 $\pm$ 0.09. We compare our new LF to others from the literature to study the evolution of the Lya luminosity density at 0 < z < 7. We find tentative evidence for evolution in the product $L^* Φ^*$, which approximately tracks the cosmic SFR density, but since field-to-field and survey-to-survey variations are in some cases as large as the possible evolution, some caution is needed in interpreting this trend.
description: 21 pages, 17 figures and 6 tables. Re-submitted to MNRAS to a new referee. Big changes with two referees' comments
Evaluation of Green Manure Amendments for the Management of Fusarium Basal Rot (Fusarium oxysporum f.sp. cepae) on Shallot
Creators: name: Assefa Sintayehu, 1 Seid Ahmed,2 Chemeda Fininsa,3 And P. K. Sakhuja3
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2014

description: No abstract available for this resource
Favulina squamosa
Creators: name: Margerel, Jean-Pierre
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Chromista
Foraminifera
Nodosariata
Lagenida
Ellipsolagenidae
Favulina
Favulina squamosa

description: Favulina squamosa (Montagu, 1803)
(Figs 2 J-P; 3A, B)
 Vermiculum squamosum Montagu, 1803: 526, pl. 14, fig. 2.
 Lagena hexagona forma squamosa – Buchner 1940: 433, pl. 5, fig. 73. LOCALITÉS. — Brest-LRK2 (Finistère), Mernel (Ille-et-Vilaine), la Groussinière (Ille-et-Vilaine), Auxais, Marchésieux (Manche).
MATÉRIEL EXAMINÉ. — Échantillon Brest-LRK2 2, 30 m (référence 793 coll. JPM, 25 spécimens); échantillon Mernel S 214 8,50 m (référence 794 coll. JPM, 22 spécimens); échantillon la Groussinière S15 24,34 -27,40 m (référence 795 coll. JPM, 17 spécimens); échantillon Auxais T47 12,00-14,00 m (référence 796 coll. JPM, sept spécimens); échantillon La Longue Séquence de Marchésieux F 10,00 m (référence 797 coll. JPM, huit spécimens).
DESCRIPTION
Test piriforme de petite taille, à section circulaire, orné d’une réticulation polygonale serrée et pourvu dans sa partie orale d’un tube court; paroi calcaire à structure radiaire et finement perforée; petite ouverture ronde; endoanulus à stries radiales situé à la base du canal oral.
REMARQUES
 Knight (1986) parle de plexus à propos de « Oolina » squamosa se référant à des tests caractérisés par une ornementation réticulée en échelle qui ne correspond pas à la figuration de Montagu et par un endosolen évasé à la base. Cette espèce est à rattacher au genre Pseudofavulina n. gen.
description: Published as part of Margerel, Jean-Pierre, 2016, Étude critique des genres Favulina, Homalohedra, Oolina, Entosolenia et Pseudofavulina n. gen. du Pliocène et du Pléistocène inférieur de la France occidentale et du Sud de l'Angleterre, pp. 559-578 in Geodiversitas 38 (4) on pages 564-566, DOI: 10.5252/g2016n4a6, http://zenodo.org/record/10081048
title: Accueil au collège de la bibliothèque de Jean Domyné de Verzet donnée par sa veuve, 1790-1791
Creators: name: Anonyme
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2024
Subjects: subject: Collège
subject: bibliothèque
subject: public

description: Manuscrit d'acceptation du leg
description: Source: D 240. Actes capitulaires des prêtres de la Doctrine Chrestienne du collège Royal de Vitry Le François à commencer le neuf mars 1739, f. 85.
description: Coverage: start = 1790 ; end=1791
GL-equivariant modules over polynomial rings in infinitely many variables
Creators: name: Sam, Steven V
name: Snowden, Andrew
Publisher: name: arXiv
Year: 2012
Subjects: subject: Commutative Algebra (math.AC)
subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 13A50, 13C05, 13D02, 05E05, 05E10, 16G20

description: Consider the polynomial ring in countably infinitely many variables over a field of characteristic zero, together with its natural action of the infinite general linear group G. We study the algebraic and homological properties of finitely generated modules over this ring that are equipped with a compatible G-action. We define and prove finiteness properties for analogues of Hilbert series, systems of parameters, depth, local cohomology, Koszul duality, and regularity. We also show that this category is built out of a simpler, more combinatorial, quiver category which we describe explicitly. Our work is motivated by recent papers in the literature which study finiteness properties of infinite polynomial rings equipped with group actions. (For example, the paper by Church, Ellenberg and Farb on the category of FI-modules, which is equivalent to our category.) Along the way, we see several connections with the character polynomials from the representation theory of the symmetric groups. Several examples are given to illustrate that the invariants we introduce are explicit and computable.
description: 59 pages, uses ytableau.sty; v2: expanded details in many proofs especially in Sections 2 and 4, Section 6 substantially expanded, added references; v3: corrected typos and Remark 4.3.3 from published version
The Gaussian free field in interlacing particle systems
Creators: name: Kuan, Jeffrey
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We show that if an interlacing particle system in a two-dimensional lattice is a determinantal point process, and the correlation kernel can be expressed as a double integral with certain technical assumptions, then the moments of the fluctuations of the height function converge to that of the Gaussian free field. In particular, this shows that a previously studied random surface growth model with a reflecting wall has Gaussian free field fluctuations.
description: 38 pages; version 2 has a rewritten introduction and more concise proofs
Dark Matter Direct Search Rates in Simulations of the Milky Way and Sagittarius Stream
Creators: name: Purcell, Chris W.
name: Zentner, Andrew R.
name: Wang, Mei-Yu
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyze self-consistent N-body simulations of the Milky Way disk and the ongoing disruption of the Sagittarius dwarf satellite to study the effect of Sagittarius tidal debris on dark matter detection experiments. In agreement with significant previous work, we reiterate that the standard halo model is insufficient to describe the non-Maxwellian velocity distribution of the Milky Way halo in our equilibrium halo-only and halo/galaxy models, and offer suggestions for correcting for this discrepancy. More importantly, we emphasize that the dark matter component of the leading tidal arm of the Sagittarius dwarf is significantly more extended than the stellar component of the arm, since the dark matter and stellar streams are not necessarily coaxial and may be offset by several kpc at the point at which they impact the Galactic disk. This suggests that the dark matter component of the Sagittarius debris is likely to have a non-negligible influence on dark matter detection experiments even when the stellar debris is centered several kpc from the solar neighborhood. Relative to models without an infalling Sagittarius dwarf, the Sagittarius dark matter debris in our models induces an energy-dependent enhancement of direct search event rates of as much as ~20 - 45%, an energy-dependent reduction in the amplitude of the annual modulation of the event rate by as much as a factor of two, a shift in the phase of the annual modulation by as much as ~20 days, and a shift in the recoil energy at which the modulation reverses phase. These influences of Sagittarius are of general interest in the interpretation of dark matter searches, but may be particularly important in the case of relatively light (m_X < 20 GeV) dark matter because the Sagittarius stream impacts the solar system at high speed compared to the primary halo dark matter.
description: 24 pages, 5 figures; to appear in JCAP; revised to reflect referee's comments
A COMPARATIVE STUDY OF ASSAMESE AND KHASI LANGUAGES ON THE BASIS OF SOCIOLINGUISTIC PERSPECTIVE: WITH SPECIAL REFERENCE TO KINSHIP TERMS
Creators: name: Dr. Kanima Pathak* & Dr. Prayasi Dutta**
Publisher: name: Zenodo
Year: 2025

description: Sociolinguistics refers as one of the major important branches of Linguistics studies. The concept of language and society are related with each other. Therefore, in the field of linguistics studies, all the aspects of language and its usages in the society is discussed. In other words, sociolinguistics deals in detail with all the aspects of languages focusing on the customs, rituals, social classes, gender differences of different communities (Konwar 2012:108. It also deals with the different forms of languages according to the speaker and the way it is spoken to communicate with one another.

                The Study of the sources and applications of words used in the language of a society recognized as a study of different contexts of the society. For example: social - system, folklore, culture, are come to light. In such words, the relational words or the kinship terms are among those words that describe the different language relationship in a society. In other words, the linguistics reactions within a particular culture of a society are expressed through the uses of various referential terms of that society and it can give a clear idea about the relationship between people, society, gender and different groups(Sarma 2016: 26). For example: the concept of social control in marital relationship, the different relationship between the individuals, the recognition of each individual as aunique, and the beautiful reflection of the cultural system of a society(Pathak 2021: 2-3). Furthermore, to the formation of those referential terms the culture of a society contributes a lot.
Efficiency of a wide-area survey in achieving short- and long-term warning for small impactors
Creators: name: Farnocchia, D.
name: Bernardi, F.
name: Valsecchi, G. B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Dynamical Systems (math.DS)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider a network of telescopes capable of scanning all the observable sky each night and targeting Near-Earth objects (NEOs) in the size range of the Tunguska-like asteroids, from 160 m down to 10 m. We measure the performance of this telescope network in terms of the time needed to discover at least 50% of the impactors in the considered population with a warning time large enough to undertake proper mitigation actions. The warning times are described by a trimodal distribution and the telescope network has a 50% probability of discovering an impactor of the Tunguska class with at least one week of advance already in the first 10 yr of operations of the survey. These results suggest that the studied survey would be a significant addition to the current NEO discovery efforts.
Topological Qubits with Majorana Fermions in Trapped Ions
Creators: name: Mezzacapo, A.
name: Casanova, J.
name: Lamata, L.
name: Solano, E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose a method of encoding a topologically-protected qubit using Majorana fermions in a trapped-ion chain. This qubit is protected against major sources of decoherence, while local operations and measurements can be realized. Furthermore, we show that an efficient quantum interface and memory for arbitrary multiqubit photonic states can be built, encoding them into a set of entangled Majorana-fermion qubits inside cavities.
description: 9 pages, 2 figures
title: Gravitational wave cosmology: measuring the Hubble constant with dark standard sirens
Creators: name: Gray, Rachel
Publisher: name: University of Glasgow
Year: 2021

description: The fact that the universe is expanding has long been agreed upon, but the rate at which it is doing so, the Hubble constant, is a cause of disagreement across the field of cosmology, with a tension between early- and late-time measurements that could either be due to systematic measurement uncertainty, or an as-yet unknown discrepancy between the cosmological model and our universe. The use of gravitational wave standard sirens for cosmological measurements has long been considered. Gravitational wave signals from compact binary coalescences have their distance encoded within them, and require no other form of calibration, making them independent of the cosmic distance ladder. A measurement of the Hubble constant using standard sirens would, by agreeing with the early-time or late-time measurements, give an indication as to whether the solution to the Hubble constant tension is systematic error or exciting new physics. The detection of the binary neutron star merger, GW170817, alongside its electromagnetic counterpart, gave rise to the first measurement of the Hubble constant using gravitational waves. Further gravitational wave detections are required in order to improve the precision enough to discriminate between the early- and late-time Hubble constant measurements, but as of 2021 no other gravitational wave detections have been linked unambiguously with an electromagnetic counterpart. In 1986, Schutz proposed a method for measuring the Hubble constant using gravitational wave detections when observed without electromagnetic counterparts (hence the term dark stan- dard sirens). Galaxy catalogues can be used instead to provide the redshifts of potential host galaxies, and the uncertainty of which galaxy is the real host can be marginalised over. This thesis takes Schutz’s original proposition and places it in a Bayesian framework which allows the incompleteness of the galaxy catalogue (and the possibility that the host galaxy of a gravitational wave event won’t be contained within it) to be accounted for. Gravitational wave selection effects (due to the finite sensitivity of the current detectors) are also incorporated into the methodology. This methodology is implemented in a software package, gwcosmo, which is then tested using a series of mock data analyses of increasing complexity. Following the success of this, the gravitational wave detections from Advanced LIGO and Virgo’s first and second observing runs are used, in combination with publicly available galaxy catalogues, to make the first measurement of the Hubble constant that combines data from multiple gravitational wave detections. Finally, further improvements are made to gwcosmo that take into account variations in the completeness of galaxy catalogues across the sky. This work paves the way for the analysis of the gravitational wave data from Advanced LIGO and Virgo’s third observing run, and beyond.
Homalohedra PATTERSON & RICHARDSON, 1988 Patterson & Richardson 1988
Creators: name: Margerel, Jean-Pierre
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Chromista
Foraminifera
Nodosariata
Lagenida
Ellipsolagenidae
Homalohedra

description: Homalohedra ? sp.
(Fig. 3 J-M)
LOCALITÉ. — Brest-LRK2 (Finistère).
MATÉRIEL EXAMINÉ. — Brest-LRK2 2,60 m. (référence 799 coll. JPM, huit spécimens).
DESCRIPTION
Test piriforme de petite taille à section circulaire, pourvu dans sa partie orale d’un col très court, et orné de fines côtes longitudinales; paroi calcaire assez mince à structure radiaire; petite ouverture ronde; endoanulus granuleux situé à la base du tube oral.
REMARQUE
 Cette espèce présente l’ornementation caractéristique du genre Homalohedra. Elle présente une structure alvéolaire embryonnaire à la base du col.
description: Published as part of Margerel, Jean-Pierre, 2016, Étude critique des genres Favulina, Homalohedra, Oolina, Entosolenia et Pseudofavulina n. gen. du Pliocène et du Pléistocène inférieur de la France occidentale et du Sud de l'Angleterre, pp. 559-578 in Geodiversitas 38 (4) on page 566, DOI: 10.5252/g2016n4a6, http://zenodo.org/record/10081048
Universal logarithmic terms in the entanglement entropy of 2d, 3d and 4d random transverse-field Ising models
Creators: name: Kovács, István A.
name: Iglói, Ferenc
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The entanglement entropy of the random transverse-field Ising model is calculated by a numerical implementation of the asymptotically exact strong disorder renormalization group method in 2d, 3d and 4d hypercubic lattices for different shapes of the subregion. We find that the area law is always satisfied, but there are analytic corrections due to E-dimensional edges (1<=E<=d-2). More interesting is the contribution arising from corners, which is logarithmically divergent at the critical point and its prefactor in a given dimension is universal, i.e. independent of the form of disorder.
description: 6 pages, 5 figures
Corrosion characteristics of alloy 800 in the presence of hydrogen peroxide in the temperature range of 25-200°C
Creators: name: Nickchi, Tirdad
Publisher: name: University of British Columbia
Year: 2013

description: The material selection for Supercritical Water-Cooled Reactor is quite challenging as the operating temperature and pressure is fairly high and the assessment of the interaction between material and the environment is not well known. One of the potential alloys to be used in the cooling system of the reactor is Alloy 800 and this work is focused on the evaluation of the electrochemical corrosion behavior of this material. The results at low temperature showed that the corrosion is controlled by the reduction of hydrogen peroxide on the surface of the alloy. The comparison between the corrosion in buffered and unbuffered solutions showed that the overall behavior is the same, although the corrosion rate was lower in the buffered solution. The study of kinetics of growth of passive film showed that the extrapolation of short term electrochemical corrosion rate measurements underestimate the actual long term corrosion rate. A Solution-filled External Pressure Balanced Reference Electrode was constructed to make the measurements in high temperature high pressure solutions. The reference electrode potential reading was characterized and validated using the potential of Cu²⁺/Cu redox. The corrosion rate of Alloy 800 increased by one order of magnitude by changing the temperature from 100 to 200°C. The corrosion rates by immersion tests at 200°C over a 14-day period show an increase from 9.3 to 81μm/year, which are lower than the equivalent electrochemical measurements. This likely refers to the long term growth of the passive layer which reduces the corrosion rate. It was concluded that Alloy 800 is a safe choice in terms of general corrosion in temperatures up to 200°C. An innovative presentation of electrochemical stability diagrams, as electrochemical potential-temperature diagrams, were developed for aqueous corrosion of iron, nickel, and chromium in sulfate solutions up to 200°C. The viability and usefulness of these diagrams were demonstrated by open circuit potential (OCP) and polarization resistance measurements of the elements in sulfate solutions. This type of diagrams may be a more convenient tool for assessing the stability regions of different species in the cooling system subjected to temperature variation.
Measurement of forward neutral pion transverse momentum spectra for $\sqrt{s}$ = 7TeV proton-proton collisions at LHC
Creators: name: Adriani, O.
name: Bonechi, L.
name: Bongi, M.
name: Castellini, G.
name: D'Alessandro, R.
name: Fukatsu, K.
name: Haguenauer, M.
name: Iso, T.
name: Itow, Y.
name: Kasahara, K.
name: Kawade, K.
name: Mase, T.
name: Masuda, K.
name: Menjo, H.
name: Mitsuka, G.
name: Muraki, Y.
name: Noda, K.
name: Papini, P.
name: Perrot, A. -L.
name: Ricciarini, S.
name: Sako, T.
name: Shimizu, Y.
name: Suzuki, K.
name: Suzuki, T.
name: Taki, K.
name: Tamura, T.
name: Torii, S.
name: Tricomi, A.
name: Turner, W. C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The inclusive production rate of neutral pions in the rapidity range greater than $y=8.9$ has been measured by the Large Hadron Collider forward (LHCf) experiment during LHC $\sqrt{s}=7$\,TeV proton-proton collision operation in early 2010. This paper presents the transverse momentum spectra of the neutral pions. The spectra from two independent LHCf detectors are consistent with each other and serve as a cross check of the data. The transverse momentum spectra are also compared with the predictions of several hadronic interaction models that are often used for high energy particle physics and for modeling ultra-high-energy cosmic-ray showers.
description: 18 Pages, 10 figures, submitted to Phys. Rev. D
Reproducibility on a Platter
Creators: name: Stikov, Nikola
Publisher: name: Zenodo
Year: 2019
Subjects: Open science
Reproducibility
Neuroscience
Neuroimaging

description: This talk, given at the FORCE2018 meeting in Montreal, introduces the reproducibility initiative of the Canadian Open Neuroscience Platform (www.conp.ca). CONP offers a flexible and reproducible approach to publishing academic research, combining transparency, data curation and code sharing to create the reproducible paper of the future. Our main goal is to share analyses in a way that lets readers replicate key figures from a journal article, as well as modify the code of the analyses to explore the impact of arbitrary parameters on those figures. To make it easier to re-run a research analysis, CONP integrates containers, data queries and Jupyter notebooks. Instead of acting as a replacement to traditional journal publishing, the CONP initiative will produce a complementary publication focused on analytical reproducibility and sharing. For each study published through CONP, our team will work with the authors to select elements of the study that capture the most important results and facilitate reproduction and exploration by reviewers and readers. We envision that our pipelines will become the standard in peer-review and remove the overhead that comes with accessing other lab’s data and running their analysis code.