cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Black Hole Scalarization in Gauss-Bonnet Extended Starobinsky Gravity
Creators: name: Liu, Hai-Shan
name: Lu, H.
name: Tang, Zi-Yu
name: Wang, Bin
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a class of higher-derivative gravities that can be viewed as the Gauss-Bonnet extension of the Starobinsky model. The theory admits the Minkowski spacetime vacuum whose linear spectrum consists of the graviton and a massive scalar mode. In addition to the usual Schwarzschild black hole, we use numerical analysis to establish that in some suitable mass range, new black holes carrying the massive scalar hair can emerge. The new black hole serves as a "wall" separating the naked spacetime singularity and wormholes in the parameter space of the scalar hair. Our numerical results also indicate that although the new hairy black hole and the Schwarzschild have different spacetime geometry, their entropy and temperature are same for the same mass.
description: Latex, 11 pages, reference added
Additional file 4 of Contaminant DNA in bacterial sequencing experiments is a major source of false genetic variability
Creators: name: Goig, Galo
name: Blanco, Silvia
name: Garcia-Basteiro, Alberto
name: IÃ±Aki Comas
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 4: Table S4. Samples of the bacterial dataset with less than 50% of target organism.
Lophopoeum centromaculatum Monne & Martins 1976
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Lophopoeum
Lophopoeum centromaculatum

description: 4. Lophopoeum centromaculatum Monné & Martins, 1976
Type locality — Mexico, Veracruz: Motzorongo. (ZMHB). Distribution — Mexico (Veracruz) to Honduras.
 Lophopoeum centromaculatum Monné & Martins, 1976: 51, fig. 16; Chemsak et al., 1992: 142 (cat.); Noguera & Chemsak, 1996: 406 (cat.).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
On a Family of Non-Unitarizable Ribbon Categories
Creators: name: Rowell, Eric C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20G42,17B37(Primary);18D10,20F36,20C08(Secondary)

description: We consider two families of categories. The first is the family of semisimple quotients of H. Andersen's tilting module categories for quantum groups of Lie type $B$ specialized at odd roots of unity. The second consists of categories constructed from a particular family of finite-dimensional quotients of the group algebra of Artin's braid group known as $BMW$-algebras of type $BC$. Our main result is to show that these families coincide as braided tensor categories using a recent theorem of Tuba and Wenzl. The morphism spaces in these categories can be equipped with a Hermitian form, and we are able to show that these categories are never unitary, and no braided tensor category sharing the Grothendieck semiring common to these families is unitarizable.
description: 25 pages, 1 figure. Final verstion to appear in Math. Z. Changes: expanded to include Lie type C, clarified/justified use of fusion rule result due to Andersen-Paradowski and to Sawin in the general case (reference added)
Asymptotic expansion approximation for spatial structure arising from directionally biased movement
Creators: name: Plank, Michael J
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences

description: Spatial structure can arise in spatial point process models via a range of mechanisms, including neighbour-dependent directionally biased movement. This spatial structure is neglected by mean-field models, but can have important effects on population dynamics. Spatial moment dynamics are one way to obtain a deterministic approximation of a dynamic spatial point process that retains some information about spatial structure. However, the applicability of this approach is limited by the computational cost of numerically solving spatial moment dynamic equations at a sufficient resolution. We present an asymptotic expansion for the equilibrium solution to the spatial moment dynamics equations in the presence of neighbour-dependent directional bias. We show that the asymptotic expansion provides a highly efficient scheme for obtaining approximate equilibrium solutions to the spatial moment dynamics equations when bias is weak. This scheme will be particularly useful for performing parameter inference on spatial moment models.
ShapePipe: a new shape measurement pipeline and weak-lensing application to UNIONS/CFIS data
Creators: name: Guinot, Axel
name: Kilbinger, Martin
name: Farrens, Samuel
name: Peel, Austin
name: Pujol, Arnau
name: Schmitz, Morgan
name: Starck, Jean-Luc
name: Erben, Thomas
name: Gavazzi, Raphael
name: Gwyn, Stephen
name: Hudson, Michael J.
name: Hiledebrandt, Hendrik
name: Liaudat, Tobias
name: Miller, Lance
name: Spitzer, Isaac
name: Van Waerbeke, Ludovic
name: Cuillandre, Jean-Charles
name: Fabbro, Sébastien
name: McConnachie, Alan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: UNIONS is an ongoing collaboration that will provide the largest deep photometric survey of the Northern sky in four optical bands to date. As part of this collaboration, CFIS is taking $r$-band data with an average seeing of 0.65 arcsec, which is complete to magnitude 24.5 and thus ideal for weak-lensing studies. We perform the first weak-lensing analysis of CFIS $r$-band data over an area spanning 1700 deg$^2$ of the sky. We create a catalogue with measured shapes for 40 million galaxies, corresponding to an effective density of 6.8 galaxies per square arcminute, and demonstrate a low level of systematic biases. This work serves as the basis for further cosmological studies using the full UNIONS survey of 4800 deg$^2$ when completed. Here we present ShapePipe, a newly developed weak-lensing pipeline. This pipeline makes use of state-of-the-art methods such as Ngmix for accurate galaxy shape measurement. Shear calibration is performed with metacalibration. We carry out extensive validation tests on the Point Spread Function (PSF), and on the galaxy shapes. In addition, we create realistic image simulations to validate the estimated shear. We quantify the PSF model accuracy and show that the level of systematics is low as measured by the PSF residuals. Their effect on the shear two-point correlation function is sub-dominant compared to the cosmological contribution on angular scales <100 arcmin. The additive shear bias is below 5x$10^{-4}$, and the residual multiplicative shear bias is at most $10^{-3}$ as measured on image simulations. Using COSEBIs we show that there are no significant B-modes present in second-order shear statistics. We present convergence maps and see clear correlations of the E-mode with known cluster positions. We measure the stacked tangential shear profile around Planck clusters at a significance higher than $4σ$.
The XMM-Newton HBS28 sample: studying the obscuration in hard X-ray selected AGNs
Creators: name: Caccianiga, A.
name: Severgnini, P.
name: Braito, V.
name: Della Ceca, R.
name: Maccacaro, T.
name: Barcons, X.
name: Carrera, F. J.
name: Lehmann, I.
name: Page, M. J.
name: Saxton, R.
name: Webb, N. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper presents the analysis of a statistically complete sample of 28 serendipitous X-ray sources selected in 82 pointed XMM-Newton fields down to a count-rate of 0.002 counts s^-1(4.5-7.5 keV energy band). This is the first sample selected in this energy range to have complete spectroscopic identifications and redshift determinations for all the objects. Apart from one Galactic source (an interacting binary), all the objects are AGNs. Their optical and X-ray properties (derived from the spectral analysis of the XMM-EPIC data) are compared together. The good correlation between the optical spectral type and the X-ray absorption properties supports the AGN unified model. Only one object that does not fit the relation between optical and X-ray absorption is found, namely a Seyfert 1.9 with no evidence of obscuration in the X-ray band (NH<1.3x10^20 cm^-2). In total, 7 sources out of 27 are heavily obscured in the X-ray (NH>10^22 cm^-2), corresponding to a surface density of 0.7 deg^-2 at the flux limit the sample (4-7x10^-14 erg s^-1 cm^-2 in the 4.5-7.5 keV energy band). Among these obscured objects, two sources show a large (intrinsic) luminosity (L_[2-10keV]>10^44 erg s^-1) and are thus classified as type 2 QSO. Finally, we have compared the fraction of X-ray absorbed AGNs (26%) with that predicted by the current XRB synthesis models at the flux limit of the survey. We find that the models significantly (~90% confidence level) over predict the fraction of absorbed AGNs thus confirming also in this hard energy band (4.5-7.5 keV) similar results recently obtained in the 2-10 keV band.
description: Accepted for publication in A&A
The $(1+(λ,λ))$ Genetic Algorithm for Permutations
Creators: name: Bassin, Anton
name: Buzdalov, Maxim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences
subject: F.2.2
subject: 68Q25, 68W40, 68W20

description: The $(1+(λ,λ))$ genetic algorithm is a bright example of an evolutionary algorithm which was developed based on the insights from theoretical findings. This algorithm uses crossover, and it was shown to asymptotically outperform all mutation-based evolutionary algorithms even on simple problems like OneMax. Subsequently it was studied on a number of other problems, but all of these were pseudo-Boolean. We aim at improving this situation by proposing an adaptation of the $(1+(λ,λ))$ genetic algorithm to permutation-based problems. Such an adaptation is required, because permutations are noticeably different from bit strings in some key aspects, such as the number of possible mutations and their mutual dependence. We also present the first runtime analysis of this algorithm on a permutation-based problem called Ham whose properties resemble those of OneMax. On this problem, where the simple mutation-based algorithms have the running time of $Θ(n^2 \log n)$ for problem size $n$, the $(1+(λ,λ))$ genetic algorithm finds the optimum in $O(n^2)$ fitness queries. We augment this analysis with experiments, which show that this algorithm is also fast in practice.
description: This contribution is a slightly extended version of the paper accepted to the GECCO 2020 workshop on permutation-based problems
Culture littéraire, compétences langagières et plasir d'écrire au quotidien : une démarche pédagogique visant à former de jeunes auteurs cultivés et motivés
Creators: name: Goulet, Marie Fabienne
Publisher: name: The University of British Columbia
Year: 2014

description: Ce mémoire a pour principal objet de décrire une démarche pédagogique d'enseignement de l'écriture développée lors d'une étude réalisée dans une classe de deuxième année, dans un programme d'immersion française. L'objetif général de mon étude était de permettre à mes élèves de faire un transfert direct entre les habiletés en lecture et celles en écriture, en utilisant un éventail d'inverventions pédagogiques éprouvées et jugées efficaces par la recherche contemporaine et s'appuyant sur un modéle d'apprentissage menant à l'àutonomie. L'ensemble de mes observations confirme qu'un enseignment explicite soutenu et équilibré unissant la lecture littéraire à l'écriture risque d'avoir un impact positif sur la quantité et la qualité de la production écrite des élèves appartenant à ce groupe d'âge. Un phénomène intéressant à noter est que la qualité croissante des écrits de mes élèves semble surtout liée à l'intensité et à l'efficacité de mes interventions pédagogiques et au support offert par l'utilisation de la littérature de jeunesse et non uniquement à la quantité de productions écrites en général.
Calculation of local pressure tensors in systems with many-body interactions
Creators: name: Heinz, Hendrik
name: Paul, Wolfgang
name: Binder, Kurt
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Local pressures are important in the calculation of interface tensions and in analyzing micromechanical behavior. The calculation of local pressures in computer simulations has been limited to systems with pairwise interactions between the particles, which is not sufficient for chemically detailed systems with many-body potentials such as angles and torsions. We introduce a method to calculate local pressures in systems with n-body interactions (n=2,3,4, . . .) based on a micromechanical definition of the pressure tensor. The local pressure consists of a kinetic contribution from the linear momentum of the particles and an internal contribution from dissected many-body interactions by infinitesimal areas. To define dissection by a small area, respective n-body interactions are divided into two geometric centers, effectively reducing them to two-body interactions. Consistency with hydrodynamics-derived formulas for systems with two-body interactions (J. H. Irving and J. G. Kirkwood, J. Chem. Phys. 18, 817 (1950)), for average cross-sectional pressures (B. D. Todd, D. J. Evans, and P. J. Daivis, Phys. Rev. E 52, 1627 (1995)), and for volume averaged pressures (virial formula) is shown. As a simple numerical example, we discuss liquid propane in a cubic box. Local, crosssectional,and volume-averaged pressures as well as relative contributions from two-body and three-body forces are analyzed with the proposed method, showing full numerical equivalence with the existing approaches. The method allows computing local pressures in the presence of many-body interactions in atomistic simulations of complex materials and biological systems.
Spin Foam Quantization and Anomalies
Creators: name: Bojowald, Martin
name: Perez, Alejandro
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The most common spin foam models of gravity are widely believed to be discrete path integral quantizations of the Plebanski action. However, their derivation in present formulations is incomplete and lower dimensional simplex amplitudes are left open to choice. Since their large-spin behavior determines the convergence properties of the state-sum, this gap has to be closed before any reliable conclusion about finiteness can be reached. It is shown that these amplitudes are directly related to the path integral measure and can in principle be derived from it, requiring detailed knowledge of the constraint algebra and gauge fixing. In a related manner, minimal requirements of background independence provide non trivial restrictions on the form of an anomaly free measure. Many models in the literature do not satisfy these requirements. A simple model satisfying the above consistency requirements is presented which can be thought of as a spin foam quantization of the Husain--Kuchar model.
description: 32 pages
The Composition, Excitation, and Physical State of Atomic Gas in the Debris Disk Surrounding 51 Oph
Creators: name: Jenkins, Edward B.
name: Gry, Cecile
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We measured 304 absorption features in the ultraviolet and visible spectra of the star 51 Oph, which is known to have a debris disk with a high inclination. We analyzed the relative populations of atoms in excited fine-structure and metastable levels that are maintained by optical pumping and collisional excitation by electrons, and we found that most of the gas is situated at about 6AU from the star, has an electron volume density $10^5 < n(e) < 3\times 10^6{\rm cm}^{-3}$, and a temperature T=8000K. Our interpretations reveal that the gas is partly ionized, has a column density of neutral hydrogen equal to $10^{21}\,{\rm cm}^{-2}$, and has a composition similar to that of a mildly depleted interstellar medium or that of Jupiter-family comets. Compared to results for disks around some other stars, such as $β$ Pic and 49 Cet, we find surprisingly little neutral carbon. No molecular features were detected, which indicates that our line of sight misses the molecule-rich central plane of the disk. The tilt of the disk is also validated by our being able to detect resonant scattering of the starlight by oxygen atoms.
description: 66 pages, 11 figures. To be published in the Astrophysical Journal. Revision: corrected faulty tagging of references in Table 7; corrected minor typos
Surfactancy in a tadpole model of proteins
Creators: name: Dyer, Oliver T.
name: Ball, Robin C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We model the environment of eukaryotic nuclei by representing macromolecules by only their entropic properties, with globular molecules represented by spherical colloids and flexible molecules by polymers. We put particular focus on proteins with both globular and intrinsically disordered regions, which we represent with `tadpole' constructed by grafting single polymers and colloids together. In Monte Carlo simulations we find these tadpoles support phase separation via depletion flocculation, and demonstrate several surfactant behaviours, including being found preferentially at interfaces and forming micelles in single phase solution. Furthermore, the model parameters can be tuned to give a tadpole a preference for either bulk phase. However, we find entropy too weak to drive these behaviours by itself at likely biological concentrations.
description: 13 pages, 7 figures, 2 tables. This article has been published to the Journal of the Royal Society Interface
Co-création de valeur par l'intégration de l'agilité dans les collectivités territoriales : Une approche de modélisation par équations structurelles
Creators: name: Najoua EL ABBAS EL GHALEB
name: Mohcine BEN SABIH EL IMRANY
name: Houda CHAIRI HOURRI
name: Fadoua LAGHZAOUI
Publisher: name: Zenodo
Year: 2025

description: Cette étude explore l'interaction entre l'agilité et la co-création de valeur dans le contexte de la qualité des services des collectivités territoriales. À l'aide de la modélisation par équations structurelles (SEM), nous examinons les données d'enquête afin de valider des hypothèses portant sur le leadership numérique, le comportement des citoyens, ainsi que la qualité fonctionnelle et technique des services. Nos résultats mettent en évidence le rôle central de l'agilité dans l'amélioration de la qualité de service, ainsi que les implications significatives du comportement participatif des citoyens et du leadership numérique sur le processus de co-création de valeur. La recherche offre non seulement une compréhension nuancée de la dynamique de la qualité de service dans les collectivités territoriales, mais fournit également un modèle pour tirer parti de l'agilité afin d'optimiser la prestation de services et l'engagement des citoyens.
The MUNICS Project: Galaxy Assembly at 0 < z < 1
Creators: name: Drory, N.
name: Bender, R.
name: Feulner, G.
name: Hill, G. J.
name: Hopp, U.
name: Maraston, C.
name: Snigula, J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We summarize the results obtained from the MUNICS K-band selected Galaxy survey thus far. MUNICS is a wide-area, medium-deep, photometric and spectroscopic survey selected in the K band, targeting randomly-selected high Galactic latitude fields. It covers an area of roughly one square degree in the K and J bands with optical imaging in the I, R, V, and B bands in 0.5 square degrees. The MUNICS photometric survey is complemented by spectroscopic follow-up observations down to limits of K<17.5 (wide area) and K<19.5 (smaller area). We have obtained 593 redshifts to this date. Here, we present results concerning the evolution of the K-band luminosity function to z ~ 1, both from the full photometric redshift sample and from the spectroscopic sample alone. We also report on new results concerning the evolution of the stellar mass function to z ~ 1. We fit stellar population synthesis models to our multicolor photometry to obtain M/L values for each source. We detect significant evolution in the stellar mass function and we find that more massive systems evolve faster in number density than less massive systems. We also measure the evolution of the total stellar mass density of the universe and find that about half the present day stellar mass formed since z ~ 1.
description: 6 pages, 4 figures. To appear in the proceedings of the conference "Multiwavelength Mapping of Galaxy Formation and Evolution", Venice, October 13-16 2003
Spin chains and classical strings in two parameters $q$-deformed AdS$_3\times$S$^3$
Creators: name: Wen, Wen-Yu
name: Kawamoto, Shoichi
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we study the spin chain and string excitation in the two-parameters $q$-deformed AdS$_3\times$S$^3$ proposed by Hoare. We obtain the deformed spin chain model at the fast spin limit for choices of deformed parameters. General ansatz for giant magnons are studied in great detail and complicated dispersion relation is treated perturbatively. We also study several types of hanging string solutions and their charges and spins are analyzed numerically. At last, we explore its pp-wave limit and find its solution only depends on the difference of deformed parameters.
description: 21 pages, 4 figures
Additional file 2 of Contaminant DNA in bacterial sequencing experiments is a major source of false genetic variability
Creators: name: Goig, Galo
name: Blanco, Silvia
name: Garcia-Basteiro, Alberto
name: IÃ±Aki Comas
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2: Table S2. Evaluation of the performance of Kraken classifying reads at genus and species level for the reference genomes and among all samples of the studies analyzed after excluding the reference genomes from the Kraken database.
Structure of pair winds from compact objects with application to emission from hot bare strange stars
Creators: name: Aksenov, A. G.
name: Milgrom, M.
name: Usov, V. V.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We consider a stationary, spherically outflowing wind consisting of electron-positron pairs and photons. We do not assume thermal equilibrium, and include the two-body processes that occur in such a wind: Moller and Bhaba scattering of pairs, Compton scattering, two-photon pair annihilation, and two-photon pair production, together with their radiative three-body variants: bremsstrahlung, double Compton scattering, and three-photon pair annihilation, with their inverse processes. In the concrete example described here, the wind injection source is a hot, bare, strange star. Such stars are thought to be powerful sources of pairs created by the Coulomb barrier at the quark surface. We present a new, finite-difference scheme for solving the relativistic kinetic Boltzmann equations for pairs and photons. Using this method we study the kinetics of the wind particles and the emerging emission for total luminosities of L=10^{34}-10^{42} ergs/s. We find the rates of particle number and energy outflows, outflow velocities, number densities, energy spectra, and other parameters for both photons and pairs as functions of the distance. We find that for L>2x10^{35} ergs/s, photons dominate the emerging emission. As L increases from ~ 10^{34} to 10^{42} ergs/s, the mean energy of emergent photons decreases from ~400-500 keV to 40 keV, as the spectrum changes in shape from that of a wide annihilation line to nearly a blackbody spectrum with a high energy (> 100 keV) tail. These results are pertinent to the deduction of the outside appearance of hot bare strange stars, which might help discern them from neutron stars.
description: 37 pages, 17 figures, accepted by ApJ, revised version after referee comments
Electroweak Phase Transition in 2HDM under Higgs, Z-pole, and W precision measurements
Creators: name: Song, Huayang
name: Su, Wei
name: Zhang, Mengchao
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we revisit the existence of a strong first order electroweak phase transition (SFOEWPT) and recent $m_W$ precision measurement in the Type-I and Type-II 2HDMs. The O(100) GeV new scalars in 2HDMs are favored by SFOEWPT, which is necessary for electroweak baryogenesis, and observed $m_W$ shift as well. % We find that under current constraints, both Type-I and Type-II 2HDM can explain the SFOEWPT, Z-pole, Higgs precision measurements and $m_W$ precision measurement of CDF-II at same time, and all these precision measurements are sensitive to heavy Higgs mass splitting in 2HDM. The allowed regions are $Δm_{A/C} \in (-400, 400) GeV, \tanb\in(1,50)$, and $Δm_{A/C} \in (-200, 300) GeV, \tanb\in(1,12)$ for Type-I and Type-II 2HDM respectively. Furthermore future lepton collider measurements on Higgs and $Z$ boson properties can explore this scenario in more detail or even rule out it.
description: 17 pages, 3 figure
Engel's law in the commodity composition of exports
Creators: name: Choi, Sung-Gook
name: Lee, Deok-Sun
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Finance (q-fin.GN)
subject: General Economics (econ.GN)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: Different shares of distinct commodity sectors in production, trade, and consumption illustrate how resources and capital are allocated and invested. Economic progress has been claimed to change the share distribution in a universal manner as exemplified by the Engel's law for the household expenditure and the shift from primary to manufacturing and service sector in the three sector model. Searching for large-scale quantitative evidence of such correlation, we analyze the gross-domestic product (GDP) and international trade data based on the standard international trade classification (SITC) in the period 1962 to 2000. Three categories, among ten in the SITC, are found to have their export shares significantly correlated with the GDP over countries and time; The machinery category has positive and food and crude materials have negative correlations. The export shares of commodity categories of a country are related to its GDP by a power-law with the exponents characterizing the GDP-elasticity of their export shares. The distance between two countries in terms of their export portfolios is measured to identify several clusters of countries sharing similar portfolios in 1962 and 2000. We show that the countries whose GDP is increased significantly in the period are likely to transit to the clusters displaying large share of the machinery category.
description: 7 figures, 4 tables
Application of the Programmable Calculator to Extension Agricultural Management Programs
Creators: name: McGrann, James M.
name: Edwards, William M.
name: McGrann, James M.
name: Edwards, William M.
Publisher: name: Unknown
Year: 1979
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Extension economists have long struggled with making recommendations to farmers on the basis of "rules of thumbs," which may become obsolete or are not universally applicable, versus encouraging detailed numerical analysis, which, while providing more precise and individualized answers, often involves laborious and difficult calculations as well. Fortunately, the development of computers and electronic data processing has added a new dimension to decision making in agriculture.
Revisiting the Advertising - Concentration Issue
Creators: name: Ward, Ronald W.
name: Behr, Robert M.
name: Ward, Ronald W.
name: Behr, Robert M.
Publisher: name: Unknown
Year: 1979
Subjects: subject: Marketing
subject: FOS: Economics and business

description: Increases in advertising efforts are reasonably well documented among most U.S. industries [Nelson, p.431. Yet the economic controversy relating to the causal linkage between advertising intensity and changing market structures has by no means been settled. Advertising can represent a major barrier to entry via its role in achieving product differentiation. In contrast advertising may enhance competition with the dissemination of information through competitive advertising, While the advertising issues are varied and complex, this paper will setforth additional empirical evidence showing the relationship between advertising intensity and changing industry structure. In particular, the intensity of advertising across industry levels of concentration will be addressed and reference given to the food industries.
AN ALTERNATIVE METHOD FOR TRAINING NON—ENGLISH SPEAKING STUDENTS
Creators: name: Harper, Wilmer M.
name: Blake, Martin J.
name: Harper, Wilmer M.
name: Blake, Martin J.
Publisher: name: Unknown
Year: 1979
Subjects: Teaching/Communication/Extension/Profession

description: For many international students studying Agricultural Economics English is'not their first language nor the language of academic instruction intheir home country. This paper evaluates a program designed to'permit students to begin their graduate training while simultaneously taking an intensive course in English as a second language. It is found that there is no significant difference in the performance of students in this program and other international students that began their training with a capability in English.
Additional file 1 of Contaminant DNA in bacterial sequencing experiments is a major source of false genetic variability
Creators: name: Goig, Galo
name: Blanco, Silvia
name: Garcia-Basteiro, Alberto
name: IÃ±Aki Comas
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Table S1. Evaluation of the performance of Kraken classifying reads at genus and species level for the reference genomes and among all samples of the studies analyzed.
Lophopoeum forsteri Tippmann 1960
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Lophopoeum
Lophopoeum forsteri

description: 6. Lophopoeum forsteri Tippmann, 1960
Type locality — Bolivia, Cochabamba. (ZSMC). Distribution — Bolivia.
 Lophopoeum forsteri Tippmann, 1960: 180, text fig. 3, pl. 9, fig. 25a.
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Retrieving highly structured models starting from black-box nonlinear state-space models using polynomial decoupling
Creators: name: Decuyper, Jan
name: Tiels, Koen
name: Runacres, Mark C.
name: Schoukens, Johan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Nonlinear state-space modelling is a very powerful black-box modelling approach. However powerful, the resulting models tend to be complex, described by a large number of parameters. In many cases interpretability is preferred over complexity, making too complex models unfit or undesired. In this work, the complexity of such models is reduced by retrieving a more structured, parsimonious model from the data, without exploiting physical knowledge. Essential to the method is a translation of all multivariate nonlinear functions, typically found in nonlinear state-space models, into sets of univariate nonlinear functions. The latter is computed from a tensor decomposition. It is shown that typically an excess of degrees of freedom are used in the description of the nonlinear system whereas reduced representations can be found. The method yields highly structured state-space models where the nonlinearity is contained in as little as a single univariate function, with limited loss of performance. Results are illustrated on simulations and experiments for: the forced Duffing oscillator, the forced Van der Pol oscillator, a Bouc-Wen hysteretic system, and a Li-Ion battery model.
description: submitted to Mechanical Systems and Signal Processing
Stochastic partial differential equations arising in self-organized criticality
Creators: name: Neuß, Marius
Publisher: name: Universität Bielefeld
Year: 2021
Subjects: subject: 510

description: This thesis is motivated by stochastic particle systems arising in self-organized criticality, which are also known as "sandpile models'". As observed by Bak, Tang and Wiesenfeld (Phys. Rev. Lett. 59 (1987)), these systems stand out due to the fact that they converge without specific external tuning to a state in which power-law distributed intermittent events occur.

 The present thesis aims to contribute to the mathematical understanding of this behaviour and of the underlying models in general by making them accessible to analytical tools. To this end, it is rigorously shown that under a suitable rescaling, modified sandpile models on finer and finer one-dimensional grids converge to the solutions of a stochastic partial differential equation (SPDE) with a singular-degenerate drift, driven by space-time white noise. Furthermore, the well-posedness of more general SPDEs of similar type is proved. Finally, the long time behaviour of solutions to the continuum limit SPDE is addressed by proving that the corresponding Markov process possesses a unique invariant measure.
ВЛИЯНИЕ НА ОКРУЖАЮЩУЮ СРЕДУ ПОИСКОВО-РАЗВЕДОЧНЫХ И ЭКСПЛУАТАЦИОННЫХ РАБОТ НА НЕФТЯНЫХ МЕСТОРОЖДЕНИЯХ
Creators: name: Алматов, Илхомжон
name: Усенов, Расул
name: Суванов, Фаррух
name: Асроров, Зафар
Publisher: name: Zenodo
Year: 2025

description: В настоящем научно-аналитическом материале представлены результаты анализа поисково- разведочных работ по выявлению скоплений нефти и газа по влиянию на окружающую среду, стадийность и последовательность нефтяного и газового промысла, использование большого количества методов, начиная от разведки, бурения, добычи, трансфера, переработки до потребления двигателями внутреннего сгорания мобильного и стационарного состояния. Они определены утвержденными положениями и практикой исследований, которые приведены на этом научно-аналитическом материале.
Working with Other Disciplines
Creators: name: Swanson, Earl R.
name: Swanson, Earl R.
Publisher: name: Unknown
Year: 1979
Subjects: Teaching/Communication/Extension/Profession

description: In this paper the term "discipline" simply refers to a specialized field of knowledge. Each discipline thus defined usually has a professional association and at least one journal. Equating a discipline to a profession is not completely satisfactory for all purposes but it is consistent with common usage and convenient for the task at hand. Within a university context, a discipline corresponds approximately to an academic department, and disciplines develop when both faculty and administration come to recognize reasonably distinct areas of inquiry.
Strangeness Production at RHIC in the Perturbative Regim
Creators: name: Chang, Daphne Y.
name: Bass, Steffen A.
name: Srivastava, Dinesh K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate strange quark production in Au-Au collisions at RHIC in the framework of the Parton Cascade Model(PCM). The yields of (anti-) strange quarks for three production scenarios -- primary-primary scattering, full scattering, and full production -- are compared to a proton-proton baseline. Enhancement of strange quark yields in central Au-Au collisions compared to scaled p-p collisions increases with the number of secondary interactions. The centrality dependence of strangeness production for the three production scenarios is studied as well. For all production mechanisms, the strangeness yield increases with $(N_{\rm part})^{4/3}$. The perturbative QCD regime described by the PCM is able to account for up to 50% of the observed strangeness at RHIC.
description: 10 pages, 4 figures, IOP format
An O(m+n)-Space Spatiotemporal Denoising Filter with Cache-Like Memories for Dynamic Vision Sensors
Creators: name: Zhao, Qinghang
name: Wang, Jiaqi
name: Ji, Yixi
name: Wu, Jinjian
name: Shi, Guangming
Publisher: name: arXiv
Year: 2024
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: Dynamic vision sensor (DVS) is novel neuromorphic imaging device that generates asynchronous events. Despite the high temporal resolution and high dynamic range features, DVS is faced with background noise problem. Spatiotemporal filter is an effective and hardware-friendly solution for DVS denoising but previous designs have large memory overhead or degraded performance issues. In this paper, we present a lightweight and real-time spatiotemporal denoising filter with set-associative cache-like memories, which has low space complexity of \text{O(m+n)} for DVS of $m\times n$ resolution. A two-stage pipeline for memory access with read cancellation feature is proposed to reduce power consumption. Further the bitwidth redundancy for event storage is exploited to minimize the memory footprint. We implemented our design on FPGA and experimental results show that it achieves state-of-the-art performance compared with previous spatiotemporal filters while maintaining low resource utilization and low power consumption of about 125mW to 210mW at 100MHz clock frequency.
Effectiveness of Intermodal Competition in Limiting Export-Grain Rail Rates
Creators: name: Makus, Larry
name: Fuller, Stephen
name: Tayler, Merritt
name: Makus, Larry
name: Fuller, Stephen
name: Tayler, Merritt
Publisher: name: Unknown
Year: 1982
Subjects: Crop Production/Industries
International Relations/Trade

description: The Staggers Rail Act places increased reliance on demand characteristics and rate competition in rate determination. Given this increased rate setting freedom, this paper evaluates (1) the effectiveness of intermodal competition in restraining export-grain rail rates, and (2) identifies the role that this Act may play in providing rate protection in various geographical areas.
Cash Market Tests of the Weak Form Efficient Market Hypothesis
Creators: name: Cox, Linda
name: Sporleder, Thomas L.
name: Chavas, Jean-Paul
name: Cox, Linda
name: Sporleder, Thomas L.
name: Chavas, Jean-Paul
Publisher: name: Unknown
Year: 1982
Subjects: subject: Agricultural and Food Policy
subject: Marketing
subject: FOS: Economics and business

description: The efficient market hypothesis can have important policy implications concerning the quantity and quality of market information publicly provided on agricultural commodity markets. This study explores appropriate methodology and some empirical tests of the weak form efficient market hypothesis applied to cash markets, rather than to commodity futures markets.
Additional file 14 of Contaminant DNA in bacterial sequencing experiments is a major source of false genetic variability
Creators: name: Goig, Galo
name: Blanco, Silvia
name: Garcia-Basteiro, Alberto
name: IÃ±Aki Comas
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 14: Table S11. Non-MTB species included in the simulated sequencings to evaluate the impact of contaminations in MTB WGS samples.
Nonlinear states and dynamics in a synthetic frequency dimension
Creators: name: Tusnin, Aleksandr K.
name: Tikan, Alexey M.
name: Kippenberg, Tobias J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Chaotic Dynamics (nlin.CD)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Recent advances in the study of synthetic dimensions revealed a possibility to employ the frequency space as an additional degree of freedom which allows for investigating and exploiting higher-dimensional phenomena in a priori low-dimensional systems. However, the influence of nonlinear effects on the synthetic frequency dimensions was studied only under significant restrictions. In the present paper, we develop a generalized mean-field model for the optical field envelope inside a single driven-dissipative resonator with quadratic and cubic nonlinearities, whose frequencies are coupled via an electro-optical resonant temporal modulation. The leading order equation takes the form of driven Gross-Pitaevskii equation with a cosine potential. We numerically investigate the nonlinear dynamics in such microring resonator with a synthetic frequency dimension in the regime where parametric frequency conversion occurs. In the case of anomalous dispersion, we find that the presence of electro-optical mode coupling confines and stabilizes the chaotic modulation instability region. This leads to the appearance of a novel type of stable coherent structures which emerge in the synthetic space with restored translational symmetry, in a region of parameters where conventionally only chaotic modulation instability states exist. This structure appears in the center of the synthetic band and, therefore, is referred to as Band Soliton. Finally, we extend our results to the case of multiple modulation frequencies with controllable relative phases creating synthetic lattices with nontrivial geometry. We show that an asymmetric synthetic band leads to the coexistence of chaotic and coherent states of the electromagnetic field inside the cavity i.e. dynamics that can be interpreted as chimera-like states. Recently developed $χ^{(2)}$ microresonators can open the way to experimentally explore our findings.
description: 12 pages, 5 figures; figure 4 and typos corrected
XMM-Newton observations of OY Car III: OM light curve modelling, X-ray timing and spectral studies
Creators: name: Hakala, Pasi
name: Ramsay, Gavin
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We revisit the XMM-Newton observations of the dwarf nova OY Car taken in July 2000 which occured shortly after an outburst. Ramsay et al (2001a) found a prominent energy dependent modulation at a period of 2240 sec: this modulation was only seen for app. 1/3 of the observation duration. In our new analysis, we examine this time interval in greater detail. In addition to the 2240 sec period we find evidence for other periods, the most prominent being near 3500 sec. Both these modulations are most likely due to changes in photoelectric absorption over this period: this is supported by phase-resolved spectroscopy. This may indicate the presence of matter above the accretion disc or a presence of a magnetic accretion curtain. In this case the 2240 sec period could represent a spin period of the white dwarf and the 3500 sec period a beat period between the spin and orbital periods. We also model the B band and UV eclipse profiles and light curves using a new technique to map the spatial extent of the accretion disc. As a result we find that whilst the optical emission is dominated by both the emission close to the accretion disc boundary layer and the hot spot where the accretion stream hits the disc, the UV emission is mainly dominated by the inner disc/boundary layer only.
description: 10 pages, 12 figures, accepted for publication in A&A
Program to calculate coefficients of transformations between three-particle hyperspherical harmonics
Creators: name: Efros, Victor D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Nuclear Theory (nucl-th)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A program to calculate the three-particle hyperspherical brackets is presented. Test results are listed and it is seen that the program is well applicable up to very high values of the hypermomentum and orbital momenta. The listed runs show that it is also very fast. Applications of the brackets to calculating interaction matrix elements and constructing hyperspherical bases for identical particles are described. Comparisons are done with the programs published previously.
description: 14 pages, to appear in Comput. Phys. Commun. Misprint in Eq. (29) is corrected
RABG'UZIY IJODI – KO'HNA SHARQ DARG'ALARI NAMUNASIDIR
Creators: name: Toirova.M.X.
Publisher: name: Zenodo
Year: 2025

description: Annotatsiya: Quyidagi tezis Rabg‘uziy ijodiga bag‘ishlangan bulib,uning «Qissasi Rabg‘uziy» nomli asaridagi xikoyatlarini peotik taxlil qiladi.
Perfect valley filter controlled by Fermi velocity modulation in graphene
Creators: name: Lins, A. R. S.
name: Lima, Jonas R. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work we investigate the effects of a Fermi velocity modulation in a valley filter in graphene created by a combination of a magnetic and electric barrier. With the effective Dirac equation of the system, we use the transfer matrix formalism to obtain the transmittance. We verify that the valley transport in graphene is very sensitive to a Fermi velocity modulation, which is able to choose which valley will be filtered with perfect filtering. Also, it is possible to use a Fermi velocity modulation to filter both valleys or to make the valley filter transparent. It reveals that the Fermi velocity is a powerful tool that can be used to tune a graphene valley filter, since it has a total control in its transport properties.