cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the Cut-Off Prescriptions Associated with Power-Law Generalized Thermostatistics
Creators: name: Teweldeberhan, A. M.
name: Plastino, A. R.
name: Miller, H. G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We revisit the cut-off prescriptions which are needed in order to specify completely the form of Tsallis' maximum entropy distributions. For values of the Tsallis entropic parameter $q>1$ we advance an alternative cut-off prescription and discuss some of its basic mathematical properties. As an illustration of the new cut-off prescription we consider in some detail the $q$-generalized quantum distributions which have recently been shown to reproduce various experimental results related to high $T_c$ superconductors.
Length Uncertainty in a Gravity's Rainbow Formalism
Creators: name: Galan, Pablo
name: Marugan, Guillermo A. Mena
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is commonly accepted that the combination of quantum mechanics and general relativity gives rise to the emergence of a minimum uncertainty both in space and time. The arguments that support this conclusion are mainly based on perturbative approaches to the quantization, in which the gravitational interactions of the matter content are described as corrections to a classical background. In a recent paper, we analyzed the existence of a minimum time uncertainty in the framework of doubly special relativity. In this framework, the standard definition of the energy-momentum of particles is modified appealing to possible quantum gravitational effects, which are not necessarily perturbative. Demanding that this modification be completed into a canonical transformation determines the implementation of doubly special relativity in position space and leads to spacetime coordinates that depend on the energy-momentum of the particle. In the present work, we extend our analysis to the quantum length uncertainty. We show that, in generic cases, there actually exists a limit in the spatial resolution, both when the quantum evolution is described in terms of the auxiliary time corresponding to the Minkowski background or in terms of the physical time. These two kinds of evolutions can be understood as corresponding to perturbative and non-perturbative descriptions, respectively. This result contrasts with that found for the time uncertainty, which can be made to vanish in all models with unbounded physical energy if one adheres to a non-perturbative quantization.
description: 12 pages, accepted for publication in Physical Review D
The QCD phase diagram at zero and small baryon density
Creators: name: Philipsen, Owe
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: I review recent developments in determining the QCD phase diagram by means of lattice simulations. Since the invention of methods to side-step the sign problem a few years ago, a number of additional variants have been proposed, and progress has been made towards understanding some of the systematics involved. All available techniques agree on the transition temperature as a function of density in the regime μ_q/T < 1. There are by now four calculations with signals for a critical point, two of them at similar parameter values and with consistent results. However, it also emerges that the location of the critical point is exceedingly quark mass sensitive. At the same time sizeable finite volume, cut-off and step size effects have been uncovered, demanding additional investigations with exact algorithms on larger and finer lattices before quantitative conclusions can be drawn. Depending on the sign of these corrections, there is ample room for the eventual phase diagram to look as expected or also quite different, with no critical point at all.
description: 30 pages, plenary talk presented at the XXIIIrd International Symposium on Lattice Field Theory, 25-30 July 2005, Trinity College, Dublin, Ireland
Response of the self-potential method to changing seepage conditions in embankment dams
Creators: name: Sheffer, Megan Rae
Publisher: name: University of British Columbia
Year: 2009

description: Internal erosion is of great concern to owners and operators of earthfill dams worldwide. The migration of fine-grained soil particles from the dam core in the direction of seepage leads to the development of preferential zones of increased fluid flow, which can compromise the structural stability of the embankment. Standard dam safety monitoring techniques provide sparse sampling of subsurface hydraulic conditions and may not be sufficient to effectively detect the onset of internal erosion. Consequently, there is a clear need for a comprehensive monitoring tool that is sensitive to changing seepage conditions. The self-potential (SP) method is a non-invasive geophysical technique that responds directly to seepage through the phenomenon of streaming potential: the voltage gradient induced by the flow of water through a porous medium. However, current standard methods of SP data interpretation do not provide information about soil properties and seepage flow rates required by geotechnical engineers to assess dam performance. A three-dimensional numerical modelling tool is presented for predicting the SP response to fluid flow based on a comprehensive seepage analysis. Both the hydraulic regime and the resultant electrical potential distribution are calculated based on the distribution of hydraulic and electrical properties within the subsurface. Effective characterization of these parameters is fundamental in achieving an accurate numerical solution. An examination of the influence of internal erosion on hydraulic conductivity, cross-coupling conductivity and electrical conductivity is achieved through theoretical analyses based on published parametric data. The numerical procedure is validated against a theoretical closed-form solution, and is further verified through a comparison with measured values in a controlled physical model of an embankment dam. The capacity for threedimensional analysis and interpretation of the SP response to seepage is illustrated through preliminary models of a zoned embankment dam located in British Columbia.
title: North Fork Ahtanum Creek Bridge #109 Replacement
titleType: AlternativeTitle
title: Endangered Species Act Section 7(a)(2) Condensed Biological Opinion and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Response for the North Fork Ahtanum Creek Bridge #109 Replacement, Yakima County, Washington.
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2025

description: WCRO-2024-02811
Solution of the Size and Horizon Problems from Classical String Geometry
Creators: name: Bernardo, Heliudson
name: Brandenberger, Robert
name: Franzmann, Guilherme
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In a recent paper we developed a string cosmology background from classical string geometry. Here, we show that this background yields a solution to the size and horizon problems of Standard Big Bang cosmology while remaining compatible with the Transplanckian Censorship Conjecture. We also take a first look at the evolution of cosmological perturbations in this model.
description: 7 pages, 2 figures
Additional file 1 of The infantile neuroaxonal dystrophy rating scale (INAD-RS)
Creators: name: Atwal, Paldeep S.
name: Midei, Mark
name: Adams, Darius
name: Fay, Alexander
name: Heerinckx, Frederic
name: Milner, Peter
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Science Policy
subject: Computational Biology

description: Additional file 1: Supplementary Document 1. INAD Neurological Assessment Instruction Manual.
Higgs--Matter splitting in quasi-realistic orbifold string GUTs
Creators: name: Faraggi, Alon E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: E6 grand unification combines the Standard Model matter and Higgs states in the single 27 representation. I discuss how the E6 structure underlies the quasi-realistic free fermion heterotic-string models. E6 -> SO(10) X U(1) breaking is obtained by a GSO phase in the N=1 partition function. The equivalence of this symmetry breaking phase with a particular choice of a boundary condition basis vector, which is used in the quasi-realistic models, is demonstrated in several cases. As a result matter states in the spinorial 16 representation of SO(10) arise from the twisted sectors, whereas the Higgs states arise from the untwisted sector. Possible additional phenomenological implications of this E6 symmetry breaking pattern are discussed.
description: 23 pages. Standard Latex. Added comment. TeX feature removed from title
La demanda regional de bebidas alcoholicas en Espana. Impacto de un incremento de los impuestos especiales
Creators: name: Diaz-Delgado, Elena Lopez
name: Gonzalez, Maria A.
name: Fellinger, Erica
name: Diaz-Delgado, Elena Lopez
name: Gonzalez, Maria A.
name: Fellinger, Erica
Publisher: name: Unknown
Year: 2003
Subjects: subject: Demand and Price Analysis
subject: Alcoholic beverages
subject: elasticities
subject: excise taxes
subject: tax revenue

description: RESUMEN - El objetivo de este estudio es analizar la respuesta diferenciada del consumo de bebidas alcohólicas de las distintas regiones españolas ante cambios en los precios y la renta y simular las consecuencias de una variación del tipo de los impuestos especiales sobre bebidas alcohólicas. Para ello se han estimado las elasticidades renta y precio de tres tipos de bebidas alcohólicas (vino, cerveza y "otras bebidas alcohólicas") a través de un sistema completo de demanda tipo AIDS, utilizando un panel de datos anuales entre 1993 y 2000 para ocho grandes regiones españolas. Los resultados de este estudio permiten concluir que existen diferencias importantes en los hábitos de consumo de bebidas alcohólicas en los hogares entre las distintas regiones y especialmente en el consumo de vino y cerveza entre la mitad norte y la mitad sur de la península. A partir de los resultados de este estudio se han simulado los ingresos por impuestos especiales e IVA de las Comunidades Autónomas ante distintos escenarios impositivos. PALABRAS CLAVE: Bebidas alcohólicas, Elasticidades, Impuestos Especiales, Recaudación Impositiva. SUMMARY - This study analyzes the different responses in the consumption of alcoholic beverages by regions in Spain to changes in levels of prices and income. To this end income and price elasticities have been estimated for three types of alcoholic beverages (wine, beer, and "other alcoholic drinks") through a complete AIDS-type demand system, using a panel of annual data from 1993 to 2000 for eight Spanish regions. The results of this study indicate that there are important differences in the household consumption and responses of alcoholic beverages among different regions, particularly regarding the consumption of wine and beer between the northern and southern halves of the peninsula. On the basis of these results regional returns from excise taxes and VAT have been simulated according to different tax scenarios.
Long-lived quantum memory with nuclear atomic spins
Creators: name: Dantan, Aurelien
name: Reinaudi, Gael
name: Sinatra, Alice
name: Laloë, Franck
name: Giacobino, Elisabeth
name: Pinard, Michel
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose to store non-classical states of light into the macroscopic collective nuclear spin ($10^{18}$ atoms) of a $^3$He vapor, using metastability exchange collisions. These collisions, commonly used to transfer orientation from the metastable state $2^{3}S\_1$ to the ground state state of $^3$He, can also transfer quantum correlations. This gives a possible experimental scheme to map a squeezed vacuum field state onto a nuclear spin state with very long storage times (hours).
description: 4 pages
THEaiTRE: Artificial Intelligence to Write a Theatre Play
Creators: name: Rosa, Rudolf
name: Dušek, Ondřej
name: Kocmi, Tom
name: Mareček, David
name: Musil, Tomáš
name: Schmidtová, Patrícia
name: Jurko, Dominik
name: Bojar, Ondřej
name: Hrbek, Daniel
name: Košťák, David
name: Kinská, Martina
name: Doležal, Josef
name: Vosecká, Klára
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: We present THEaiTRE, a starting project aimed at automatic generation of theatre play scripts. This paper reviews related work and drafts an approach we intend to follow. We plan to adopt generative neural language models and hierarchical generation approaches, supported by summarization and machine translation methods, and complemented with a human-in-the-loop approach.
description: accepted to AI4Narratives2020
The XMM-Newton view of PG quasars: II. Properties of the Fe K-alpha line
Creators: name: Jimenez-Bailon, E.
name: Piconcelli, E.
name: Guainazzi, M.
name: Schartel, N.
name: Rodriguez-Pascual, P. M.
name: Santos-Lleo, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The properties of the fluorescence Fe K-alpha emission lines of a sample of 38 quasars (QSOs) observed with XMM-Newton are studied. These objects are included in the optically selected sample from the Palomar-Green (PG) Bright Quasar Survey with an X-ray luminosity 1.3E43
description: 10 pages, 3 figures, accepted by A&A
Condensation temperature trends among stars with planets
Creators: name: Gonzalez, Guillermo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Results from detailed spectroscopic analyses of stars hosting massive planets are employed to search for trends between abundances and condensation temperatures. The elements C, S, Na, Mg, Al, Ca, Sc, Ti, V, Cr, Mn, Fe, Ni and Zn are included in the analysis of 64 stars with planets and 33 comparison stars. No significant trends are evident in the data. This null result suggests that accretion of rocky material onto the photospheres of stars with planets is not the primary explanation for their high metallicities. However, the differences between the solar photospheric and meteoritic abundances do display a weak but significant trend with condensation temperature. This suggests that the metallicity of the sun's envelope has been enriched relative to its interior by about 0.07 dex.
description: 5 pages, 7 figures, MNRAS Letter in press
Transmision de precios en los mercados regionales de ovino en Espana
Creators: name: Boshnjaku, L.
name: Ben Kaabia, Monia
name: Gil, Jose Maria
name: Boshnjaku, L.
name: Ben Kaabia, Monia
name: Gil, Jose Maria
Publisher: name: Unknown
Year: 2003
Subjects: subject: Demand and Price Analysis
subject: price transmission
subject: cointegration
subject: lead-lag relationships
subject: Spanish lamb sector

description: Resumen El análisis de las relaciones de precios existentes en un determinado sector permiten, por un lado, ofrecer una idea aproximada del funcionamiento de los mercados y, por otro, anticipar respuestas ante shocks inesperados en mercados relacionados. El objetivo de este estudio se ha centrado en el análisis de la transmisión de precios entre los principales mercados de ovino en España. Para llevar a cabo este estudio se ha adoptado un enfoque econométrico que ha tenido en cuenta las propiedades estocásticas de las series, la posible naturaleza multivariante de los procesos de transmisión, y la distinción entre el comportamiento a corto y largo plazo. Los resultados indican que los mercados de ovino se encuentran bastante interrelacionados pudiéndose considerar Zafra como el mercado líder en la fijación de precios. En cualquier caso, la influencia de este mercado es mucho más acusada en el Sur peninsular, mientras que para el Norte los precios de la Lonja del Ebro pueden considerarse como los más representativos. Palabras clave: Transmisión de precios, cointegración, liderazgo, sector ovino español. Summary The analysis of price relationships in commodity markets provides an approximate idea on markets performance as well as allows the researcher to analyze price responses to unanticipated shocks. The objective of this paper is to explore price relationships in geographical separated markets in the Spanish lamb sector. The methodology used is based on the specification of multivariate time series models which are flexible enough to take into account the stochastic properties of data, the multivariate nature of price relationships and to distinguish between short- and long-run horizons. Results indicate that lamb markets in Spain are strongly related being Zafra the leading market. The influence of Zafra is substantial in the southern markets while in the North, the Lonja del Ebro could be considered as the most representative market.
Hexagon Ising-Kondo lattice: An implication for intrinsic antiferromagnetic topological insulator
Creators: name: Yang, Wei-Wei
name: Zhong, Yin
name: Luo, Hong-Gang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recently, the MnBi$_2$Te$_4$ material has been proposed as the first intrinsic antiferromagnetic topological insulator (AFMTI), where the interplay between magnetism and topology induces several fascinating topological phases, such as the quantum anomalous Hall effect, Majorana fermions, and axion electrodynamics. However, an exactly solvable model being capable to capture the essential physics of the interplay between magnetism and topology is still absent. Here, inspired by the the Ising-like nature [B. Li \textit{et al.} Phys. Rev. Lett. \textbf{124}, 167204 (2020)] and the topological property of MnBi$_2$Te$_4$, we propose a topological Ising-Kondo lattice (TIKL) model to study its ground state property in an analytical way at zero temperature. The resultant phase diagram includes rich topological and magnetic states, which emerge in the model proposed in a natural and consistent way for the intrinsic magnetic topological insulator. With Monte Carlo simulation, we extend the AFMTI ground state to finite temperature. It reveals that topological properties do sustain at high temperature, which even can be restored by elevated temperature at suitable correlation strength. The results demonstrate that TIKL may offer an insight for future experimental research, with which magnetism and transport properties could be fine tuned to achieve more stable and exotic magnetic topological quantum states.
description: 5pages+6figures,submitted to PRL on June 13,2020
Additional file 1 of Detection of atypical porcine pestivirus in Swedish piglets with congenital tremor type A-II
Creators: name: Stenberg, Hedvig
name: Jacobson, Magdalena
name: Malmberg, Maja
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1.
On the Anomalies and Schwinger Terms in Noncommutative Gauge Theories
Creators: name: Ardalan, F.
name: Arfaei, H.
name: Sadooghi, N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Invariant (nonplanar) anomaly of noncommutative QED is reexamined. It is found that just as in ordinary gauge theory UV regularization is needed to discover anomalies, in noncommutative case, in addition, an IR regularization is also required to exhibit existence of invariant anomaly. Thus resolving the controversy in the value of invariant anomaly, an expression for the unintergrated anomaly is found. Schwinger terms of the current algebra of the theory are derived.
description: LaTeX, axodraw.sty, 1 figure; v2: Typos corrected, References added, Version to appear in Int. J. Mod. Phys. A (2006)
Les deux "testimonia" ps.-basiliens du florilège de Jean Maron
Creators: name: Halleux, André De
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 72 (1988): Oriens christianus, Band 72
La certificacion como estrategia para la recuperacion de la confianza del consumidor en la adquisicion de la carne de ternera
Creators: name: Barrena Figueroa, Ramo
name: Sanchez Garcia, Mercedes
name: Gil, Jose Maria
name: Gracia, Azucena
name: Rivera, Luis M.
name: Barrena Figueroa, Ramo
name: Sanchez Garcia, Mercedes
name: Gil, Jose Maria
name: Gracia, Azucena
name: Rivera, Luis M.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Consumer/Household Economics
subject: consumer behaviour
subject: decision models
subject: label
subject: beef
subject: food safety

description: Resumen El objetivo del trabajo se centra en analizar el efecto de la presencia de etiqueta en un producto con el fin de minimizar el riesgo percibido o la incertidumbre asociada al producto. El análisis ha sido realizado tomando como ejemplo la carne fresca de ternera, producto que ha presentado en Europa, en general, y en España, en particular, importantes problemas de salubridad o seguridad alimentaria que han generado una importante pérdida de confianza por parte de los consumidores e, indirectamente, una disminución de su consumo, lo que ha supuesto, a su vez, serias implicaciones sobre la oferta. Teniendo en cuenta el objetivo planteado, se especifica un modelo para analizar la disposición del consumidor a aumentar el consumo de carne de ternera si se le garantiza su salubridad. Se considera que el consumidor realiza una doble decisión: 1) consumir más o no; y 2) una vez que ha decidido incrementar su consumo, determina en qué cantidad, considerándose, adicionalmente, que ambas decisiones se adoptan de forma simultánea. Los resultados obtenidos en tres Comunidades Autónomas españolas (Comunidad de Aragón, Comunidad Foral de Navarra y Comunidad Valenciana) muestran la idoneidad de las etiquetas para mitigar los efectos que sobre la demanda tienen estos problemas surgidos en la oferta, siendo los resultados especialmente relevantes en el mercado que ha presentado mayores problemas de salubridad. Palabras Clave: comportamiento del consumidor, modelos de decisión, etiqueta, carne de ternera, seguridad alimentaria. Summary The objective of the paper is to analyse the effect of the label product presence in the reduction of the health hazard perceived or in the uncertainty associated to a product. The market selected like an example was the fresh beef, because in Europe, in general, and in Spain in particular, has been serious problems related with the food safety. These problems had influenced in the lost confidence of the consumers with important consequences in the supply. We propose a consumer decision model with two steps: 1) to consume more or no, 2) if the consumer decided to increase the consume analyse the factors which affect the quantity to increment; these decisions are considered simultaneous. The results obtained in the three Spanish regions (Comunidad de Aragón, Comunidad Foral de Navarra and Comunidad Valenciana) showed the suitability of the utilisation of the labels in the product to reduce or mitigate the demand effects of these supply complications, specially in the market which major food safety problems.
Los costes de calidad en las empresas citricolas y su identificacion en el marco del sistema de costes basado en actividades
Creators: name: Izquierdo, Ricardo Server
name: Ronco, Alicia Mateos
name: Izquierdo, Ricardo Server
name: Ronco, Alicia Mateos
Publisher: name: Unknown
Year: 2003
Subjects: subject: Agribusiness
subject: quality
subject: costs
subject: citrus companies
subject: activity based costing system.

description: Resumen La posición competitiva de las empresas en unos mercados cada vez más exigentes, precisa la definición de una estrategia orientada a la capacidad de respuesta a las necesidades del cliente. Las empresas de comercialización citrícola españolas, con productos de escasa diferenciación "per se", basan en gran medida su competitividad en la calidad de sus productos y en su capacidad de adaptación a los requerimientos del cliente. Sin embargo y a pesar de constituir una de sus principales vías de diferenciación, la valoración que estas empresas realizan de los aspectos relacionados con la calidad se centra en estimaciones alejadas de los términos cuantitativos, por lo que se hace necesaria la propuesta de una metodología de evaluación y cuantificación de los denominados costes de calidad, que sirva de apoyo a los programas de mejora de la calidad en la empresa. En el presente trabajo se propone en este sentido la utilización de la metodología de los sistemas de costes por actividades, que proporciona una herramienta idónea para la determinación de los costes de calidad. Summary Within the more and more demanding markets, companies' competitiveness policies need strategies which fulfil customers' demands. Spanish citrus companies, whose products present almost any difference, base their competitiveness on producing quality goods and meeting with the customers' requirements. However, these companies use no quantitative valuations of quality. For this reason, it is necessary a methodology to evaluate and quantify the quality costs, in order to support the quality improvement programmes in the company. In this paper we suggest the use of the activity cost system methodology to determine the quality costs.
Direct Observation of Josephson Capacitance
Creators: name: Sillanpaa, M. A.
name: Lehtinen, T.
name: Paila, A.
name: Makhlin, Yu.
name: Roschier, L.
name: Hakonen, P. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The effective capacitance has been measured in the split Cooper pair box (CPB) over its phase-gate bias plane. Our low-frequency reactive measurement scheme allows to probe purely the capacitive susceptibility due to the CPB band structure. The data are quantitatively explained using parameters determined independently by spectroscopic means. In addition, we show in practice that the method offers an efficient way to do non-demolition readout of the CPB quantum state.
description: 4 pages
Data Assimilation Method for Experimental and First-Principles Data: Finite-Temperature Magnetization of (Nd,Pr,La,Ce)$_{2}$(Fe,Co,Ni)$_{14}$B
Creators: name: Harashima, Yosuke
name: Tamai, Keiichi
name: Doi, Shotaro
name: Matsumoto, Munehisa
name: Akai, Hisazumi
name: Kawashima, Naoki
name: Ito, Masaaki
name: Sakuma, Noritsugu
name: Kato, Akira
name: Shoji, Tetsuya
name: Miyake, Takashi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose a data-assimilation method for evaluating the finite-temperature magnetization of a permanent magnet over a high-dimensional composition space. Based on a general framework for constructing a predictor from two data sets including missing values, a practical scheme for magnetic materials is formulated in which a small number of experimental data in limited composition space are integrated with a larger number of first-principles calculation data. We apply the scheme to (Nd$_{1-α-β-γ}$Pr$_α$La$_β$Ce$_γ$)$_{2}$(Fe$_{1-δ-ζ}$Co$_δ$Ni$_ζ$)$_{14}$B. The magnetization in the whole $(α, β, γ, δ, ζ)$ space at arbitrary temperature is obtained. It is shown that the Co doping does not enhance the magnetization at low temperatures, whereas the magnetization increases with increasing $δ$ above 320 K.
description: 11 pages, 7 figures
A wide survey for circumstellar disks in the Lupus complex
Creators: name: Teixeira, P. S.
name: Scholz, A.
name: Alves, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Previous star formation studies have, out of necessity, often defined a population of young stars confined to the proximity of a molecular cloud. Gaia allows us to examine a wider, three-dimensional structure of nearby star forming regions, leading to a new understanding of their history. We present a wide-area survey covering 494 square degrees of the Lupus complex, a prototypical low-mass star forming region. Our survey includes all known molecular clouds in this region as well as parts of the Upper Scorpius (US) and Upper Centaurus Lupus (UCL) groups of the Sco-Cen complex. We combine Gaia DR2 proper motions and parallaxes as well as ALLWISE mid-infrared photometry to select young stellar objects (YSOs) with disks. The YSO ages are inferred from Gaia color-magnitude diagrams, and their evolutionary stages from the slope of the spectral energy distributions. We find 98 new disk-bearing sources. Our new sample includes objects with ages ranging from 1 to 15 Myr and masses ranging from 0.05 to 0.5 solar masses , and consists of 56 sources with thick disks and 42 sources with anemic disks. While the youngest members are concentrated in the clouds and at distances of 160 pc, there is a distributed population of slightly older stars that overlap in proper motion, spatial distribution, distance, and age with the Lupus and UCL groups. The spatial and kinematic properties of the new disk-bearing YSOs indicate that Lupus and UCL are not distinct groups. Our new sample comprises some of the nearest disks to Earth at these ages, and thus provides an important target for follow-up studies of disks and accretion in very low mass stars, for example with ALMA and ESO-VLT X-Shooter.
description: Accepted for publication in A&A
Calculo del valor de la cuota lactea en las explotaciones de leche gallegas
Creators: name: Dominguez, Jose Carlos De Miguel
name: Vidal, Tomas Perez
name: Gonzalez, Xose Anton Rodriguez
name: Dominguez, Jose Carlos De Miguel
name: Vidal, Tomas Perez
name: Gonzalez, Xose Anton Rodriguez
Publisher: name: Unknown
Year: 2003
Subjects: subject: Demand and Price Analysis
subject: Milk production
subject: cost function
subject: quota value.

description: RESUMEN - El nivel de cuota láctea por explotación y la transferencia de cuota entre las distintas explotaciones juegan un papel principal en la reestructuración del sector productor de leche en España. En este trabajo se estiman el valor de una unidad de cuota, de su valor de capitalización en el horizonte del año 2006 y la concreción de algunos determinantes de dicho valor. El estudio se realiza utilizando los datos de 32 explotaciones de leche gallegas para el periodo 1990-1999, y como resultado del mismo se deducen conclusiones de interés en cuanto al funcionamiento del mercado de la cuota y a la política de gestión de las mismas. PALABRAS CLAVE: Producción de leche, función de costes, valor de la cuota SUMMARY - The level of milk quota for farm and the transfer of milk quota among producers play are principal factors in the Spain milk producer sector adjustment. This paper presents an estimation of milk quota value, estimation of the capitalization of quota value in the 2006 year horizon and make concrete some determinant factors of quota value. Estimates derive from a sample of 32 Galician dairy farms for the years 1990-1999, and from the results of this paper is possible deduce conclusions about functioning quota market and management of quota policy.
Tracking and abstracting construction site documentation
Creators: name: Jiang, Chuntao
Publisher: name: University of British Columbia
Year: 2009

description: This paper addresses how best to capture the as-built story of construction projects through site documents so that construction professionals can effectively track what happened during the construction process, solve problems, pursue valid claims, and extract lessons learnt for use on future projects. At present in the construction industry, only a subset of site documents are in electronic format, and software packages used to create site records are usually not compatible with each other; such facts make it very difficult and costly to manage all records directly. This study is based on the premise that creating electronic abstractions of key site documents is an approach not only feasible but also practical to capture their essence. This study examines both the strengths and weaknesses of the traditional hard copy practice of the industry, and how this practice can be enhanced using Information Technology such that current system advantages are retained and new benefits are derived. Building on previous works, the audience of this research work consists of construction firms and public agencies that oversee the construction of buildings and civil infrastructure. The methodology used in conducting this study involved a thorough review of the literature, including past theses on related topics, an examination of the state-of-the- art as reflected in current commercial software, and a field study of on site documentation practices based on two periods of site observation with a project management firm in a high rise building project. The results of the research were implemented in a research system directed at the needs of industry, which features a multiple-view description of construction projects. Generic properties and some custom properties for abstracting site documents have been identified. The ability to search through these abstractions has also been explored. The ultimate goal is to be able to query the system for all information within the multiple view representation pertaining to a user specified issue. This includes the identification of the relevant documents, physical components, schedule performance, and problems encountered.
Inherently Global Nature of Topological Charge Fluctuations in QCD
Creators: name: Horvath, I.
name: Alexandru, A.
name: Zhang, J. B.
name: Chen, Y.
name: Dong, S. J.
name: Draper, T.
name: Lee, F. X.
name: Liu, K. F.
name: Mathur, N.
name: Tamhankar, S.
name: Thacker, H. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We have recently presented evidence that in configurations dominating the regularized pure-glue QCD path integral, the topological charge density constructed from overlap Dirac operator organizes into an ordered space-time structure. It was pointed out that, among other properties, this structure exhibits two important features: it is low-dimensional and geometrically global, i.e. consisting of connected sign-coherent regions with local dimensions 1<= d < 4, and spreading over arbitrarily large space--time distances. Here we show that the space-time structure that is responsible for the origin of topological susceptibility indeed exhibits global behavior. In particular, we show numerically that topological fluctuations are not saturated by localized concentrations of most intense topological charge density. To the contrary, the susceptibility saturates only after the space-time regions with most intense fields are included, such that geometrically global structure is already formed. We demonstrate this result both at the fundamental level (full topological density) and at low energy (effective density). The drastic mismatch between the point of fluctuation saturation (~ 50% of space-time at low energy) and that of global structure formation (<4% of space-time at low energy) indicates that the ordered space-time structure in topological charge is inherently global and that topological charge fluctuations in QCD cannot be understood in terms of individual localized pieces. Description in terms of global brane-like objects should be sought instead.
description: 10 pages, 3 figures; v2: typos corrected, minor modifications; v3: misprint in Eqs. (2,3) fixed
Asymptotic population imbalance of an ultracold bosonic ensemble in a driven double-well
Creators: name: Chen, Jie
name: Mukhopadhyay, Aritra K.
name: Schmelcher, Peter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We demonstrate that an ultracold many-body bosonic ensemble confined in an one-dimensional (1D) double well potential exhibits a population imbalance between the two wells at large timescales, when the depth of the wells are modulated by a time-dependent driving force. The specific form of the driving force is shown to break spatial parity and time-reversal symmetries, which leads to such an asymptotic population imbalance (API). The value of the API can be flexibly controlled by changing the phase of the driving force and the total number of particles. While the API is highly sensitive to the initial state in the few-particle regime, this dependence on the initial state is lost as we approach the classical limit of large particle numbers. We perform a Floquet analysis in the few-particle regime and an analysis based on a driven classical non-rigid pendulum in the many-particle regime. Although the obtained API values in the many-particle regime agree very well with that obtained in the classical limit, we show that there exists a significant disagreement in the corresponding real-time population imbalance due to quantum correlations.
description: 13 pages, 5 figures
Modulational instability in asymmetric coupled wave functions
Creators: name: Kourakis, I.
name: Shukla, P. K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The evolution of the amplitude of two nonlinearly interacting waves is considered, via a set of coupled nonlinear Schroedinger-type equations. The dynamical profile is determined by the wave dispersion laws (i.e. the group velocities and the GVD terms) and the nonlinearity and coupling coefficients, on which no assumption is made. A generalized dispersion relation is obtained, relating the frequency and wave-number of a small perturbation around a coupled monochromatic (Stokes') wave solution. Explicitly stability criteria are obtained. The analysis reveals a number of possibilities. Two (individually) stable systems may be destabilized due to coupling. Unstable systems may, when coupled, present an enhanced instability growth rate, for an extended wave number range of values. Distinct unstable wavenumber windows may arise simultaneously.
description: NEXT Sigma-Phi Statistical Physics Conference (2005, Kolymbari, Greece) Proceedings, submitted; v.2 is a shorter version of the text in v.1 (more detailed and somehow more explanatory, yet abbreviated due to submission regulations); some typos corrected as well
Leading role of gravity in the structure of spinning particle
Creators: name: Burinskii, Alexander
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Kerr-Newman solution has g=2 as that of the Dirac electron and is considered as a model of spinning particle in general relativity. The Kerr geometry changes cardinally our representations on the role of gravity in the particle physics. We show that the Kerr gravitational field has a stringy local action and a topological peculiarity which are extended up to the Compton distances, and also a strong non-local action playing the key role in the mass-renormalization and regularization of singularities. The Kerr-Newman gravity determines the structure of spinning particle in the form of a relativistically rotating disk, a highly oblate bag of the Compton radius. Interior of this bag consists of an AdS or dS ``false vacuum'', depending on the correlation of the mass density and charge. In the same time, the local action of gravitational field may be considered as negligible for regularized particle.
description: 11 pages,2 figures, based on the talks given at the Summer conferences: ``Symmetry and Spin'' (Prague, July 2005), QFTEXT'05 (Barcelona, September 2005), Spin-05 (Dubna, September 2005)
Thermal corrections in Casimir interaction between metal and dielectric
Creators: name: Geyer, B.
name: Klimchitskaya, G. L.
name: Mostepanenko, V. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The Casimir interaction between two thick parallel plates, one made of metal and the other of dielectric, is investigated at nonzero temperature. It is shown that in some temperature intervals the Casimir pressure and the free energy of a fluctuating field are the nonmonotonous functions of temperature and the respective Casimir entropy can be negative. The physical interpretation for these conclusions is given. At the same time we demonstrate that the entropy vanishes when the temperature goes to zero, i.e., in the Casimir interaction between metal and dielectric the Nernst heat theorem is satisfied. The investigation is performed both analytically, by using the model of an ideal metal and dilute dielectric or dielectric with a frequency-independent dielectric permittivity, and numerically for real metal (Au) and dielectrics with different behavior of the dielectric permittivity along the imaginary frequency axis (Si and Al_2O_3).
description: 19 pages, 6 figures, to appear in Phys. Rev. A
Identificacion de grupos estrategicos en el sector hortofruticola espanol
Creators: name: Martinez, Marian Garcia
name: Poole, Nigel D.
name: Del Campo, Francisco
name: Lopez, David
name: Martinez, Marian Garcia
name: Poole, Nigel D.
name: Del Campo, Francisco
name: Lopez, David
Publisher: name: Unknown
Year: 2002
Subjects: subject: Crop Production/Industries
subject: strategic groups
subject: business performance
subject: management styles
subject: Spain
subject: fresh fruits and vegetables

description: RESUMEN - Este artículo ofrece los resultados de un estudio intra-sectorial destinado a identificar la existencia o no de vínculos entre la estrategia empresarial, el estilo de gestión, la estructura organizativa y la actuación en el sector hortofrutícola español utilizando el análisis de grupos estratégicos como instrumento metodológico. Los grupos estratégicos se formaron a partir de dimensiones claves de la orientación estratégica de las empresas. Los resultados obtenidos muestran que los niveles de rentabilidad no difieren de forma sistemática entre los grupos estratégicos obtenidos. La heterogeneidad en la actuación está influenciada por una alineación entre la cultura empresarial y la estructura organizativa. Una tendencia hacia una mayor "organicidad" y/o la adopción de un estilo de gestión emprendedor son factores ambos que tienden a contribuir hacia una mejora en la actuación general de la empresa. SUMMARY - This article reports the results of an intra-industry study that seeks to identify empirical regularities between firm strategy, management style, organisational structure and performance in the Spanish fresh fruit and vegetable industry using strategic group analysis. Groups were formed from key dimensions reflecting firms' strategic orientations. Performance levels did not differ systematically between strategic groups, but performance was found to be influenced by the alignment between entrepreneurial culture and organisational structure. A move towards greater flexibility and/or adopting an entrepreneurial style are both likely to contribute to an improvement in the overall performance of the firm.
Nanoscale Weibull Statistics
Creators: name: Pugno, N.
name: Ruoff, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this paper a modification of the classical Weibull Statistics is developed for nanoscale applications. It is called Nanoscale Weibull Statistics. A comparison between Nanoscale and classical Weibull Statistics applied to experimental results on fracture strength of carbon nanotubes clearly shows the effectiveness of the proposed modification. A Weibull's modulus around 3 is, for the first time, deduced for nanotubes. The approach can treat (also) a small number of structural defects, as required for nearly defect free structures (e.g., nanotubes) as well as a quantized crack propagation (e.g., as a consequence of the discrete nature of matter), allowing to remove the paradoxes caused by the presence of stress-intensifications.
Additional file 2 of Does the addition of concurrent visual feedback increase adherence to a home exercise program in people with stroke: a single-case series?
Creators: name: Levy, Tamina
name: Crotty, Maria
name: Laver, Kate
name: Lannin, Natasha
name: Killington, Maggie
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 2. Consort checklist.
Additional file 1 of Impact of implementation of a breech clinic in a tertiary hospital
Creators: name: Derisbourg, S.
name: E. Costa
name: L. De Luca
name: S. Amirgholami
name: V. Bogne Kamdem
name: A. Vercoutere
name: W. H. Zhang
name: S. Alexander
name: P. M. Buekens
name: Y. Englert
name: A. Pintiaux
name: C. Daelemans
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Cancer
subject: Computational Biology

description: Additional file 1. Leaflet of the breech clinic.
Additional file 1 of Does the addition of concurrent visual feedback increase adherence to a home exercise program in people with stroke: a single-case series?
Creators: name: Levy, Tamina
name: Crotty, Maria
name: Laver, Kate
name: Lannin, Natasha
name: Killington, Maggie
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 1: Appendix S1. Technology Use Questionairre, developed by the authors.