cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Estimation of time delay by coherence analysis
Creators: name: Govindan, R. B.
name: Raethjen, J.
name: Kopper, F.
name: Claussen, J. C.
name: Deuschl, G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Using coherence analysis (which is an extensively used method to study the correlations in frequency domain, between two simultaneously measured signals) we estimate the time delay between two signals. This method is suitable for time delay estimation of narrow band coherence signals for which the conventional methods cannot be reliably applied. We show by analysing coupled Rössler attractors with a known delay, that the method yields satisfactory results. Then, we apply this method to human pathologic tremor. The delay between simultaneously measured traces of Electroencephalogram (EEG) and Electromyogram (EMG) data of subjects with essential hand tremor is calculated. We find that there is a delay of 11-27 milli-seconds ($ms$) between the tremor correlated parts (cortex) of the brain (EEG) and the trembling hand (EMG) which is in agreement with the experimentally observed delay value of 15 $ms$ for the cortico-muscular conduction time. By surrogate analysis we calculate error-bars of the estimated delay.
description: 21 pages, 8 figures, elstart.cls file included. Accepted for publication in Physica A
Actitudes y preferencias de consumidores chilenos e italianos hacia los damascos
Creators: name: Mora, Marcos
name: Infante, Rodrigo
name: Espinoza, J.A.
name: Predieri, S.
name: Mora, Marcos
name: Infante, Rodrigo
name: Espinoza, J.A.
name: Predieri, S.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Consumer/Household Economics
subject: Preferences
subject: Apricot
subject: Consumers
subject: Segmentation and Conjoint Analysis

description: The high competitiveness in agricultural markets has generated saturation; this situation implies a constant search of innovations to achieve a better commercial performance of agricultural companies. In this sense, to improve the competitiveness of agricultural products, it is basic to know the final demand of them, wich in this case are focused in fresh apricots. Considering this, the main objective of this research is to contribute to fresh apricot industry improvement in the national and international market, through a better knowledge in customer behaviour that could be attractive and promissory for this industry both in Chile and Italy. To achieve this aim, a survey has been applied to a non probabilistic sample of Chilean and Italian consumers, and later the information has been analyzed by multivariant methods, specifically, factorial analysis, cluster and joint. In this sense, this study centres on the scientific analysis of fresh apricots consumers, in the Chilean and Italian market. In this study, the variables related to descriptive aspects of consumption, demographics characteristics, attitudes and preferences in general to the Chilean apricots were analyzed. In relation to the principal results of this study, a preference to the Chilean apricots was observed, specifically in cultivar “Robada” compared to “Castle Brite”, both in national and international market.
description: Published by Asociación de Economistas Agrarios de Chile
Lidar for Autonomous Driving: The principles, challenges, and trends for automotive lidar and perception systems
Creators: name: Li, You
name: Ibanez-Guzman, Javier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Autonomous vehicles rely on their perception systems to acquire information about their immediate surroundings. It is necessary to detect the presence of other vehicles, pedestrians and other relevant entities. Safety concerns and the need for accurate estimations have led to the introduction of Light Detection and Ranging (LiDAR) systems in complement to the camera or radar-based perception systems. This article presents a review of state-of-the-art automotive LiDAR technologies and the perception algorithms used with those technologies. LiDAR systems are introduced first by analyzing the main components, from laser transmitter to its beam scanning mechanism. Advantages/disadvantages and the current status of various solutions are introduced and compared. Then, the specific perception pipeline for LiDAR data processing, from an autonomous vehicle perspective is detailed. The model-driven approaches and the emerging deep learning solutions are reviewed. Finally, we provide an overview of the limitations, challenges and trends for automotive LiDARs and perception systems.
description: Will appear in IEEE Signal Processing Magazine
Hybrid cluster state proposal for a quantum game
Creators: name: Paternostro, M.
name: Tame, M. S.
name: Kim, M. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose an experimental implementation of a quantum game algorithm in a hybrid scheme combining the quantum circuit approach and the cluster state model. An economical cluster configuration is suggested to embody a quantum version of the Prisoners' Dilemma. Our proposal is shown to be within the experimental state-of-art and can be realized with existing technology. The effects of relevant experimental imperfections are also carefully examined.
description: 4 pages, 3 figures, RevTeX 4
Multi-output Technical Efficiency for Argentinean Dairy Farms Using Stochastic Production and Stochastic Distance Frontiers with Unbalanced Panel Data
Creators: name: Moreira Lopez, Victor H.
name: Bravo-Ureta, Boris E.
name: Arzubi, Amilcar
name: Schilder, Ernesto
name: Moreira Lopez, Victor H.
name: Bravo-Ureta, Boris E.
name: Arzubi, Amilcar
name: Schilder, Ernesto
Publisher: name: Unknown
Year: 2006
Subjects: subject: Production Economics
subject: Productivity Analysis
subject: Argentina
subject: dairy farms
subject: panel data
subject: stochastic production and stochastic distance frontiers
subject: technical efficiency

description: This paper uses stochastic production frontiers (SPF) and stochastic distance frontiers (SDF) to measure technical efficiency for a sample of dairy farms in Abasto Sur, Argentina. The data is a highly unbalanced panel including 46 farmers from 1997/98 to 2001/02 with a total of 82 observations. Four alternative models based on the Battese and Coelli framework are evaluated. Average technical efficiency across the four models ranges from 67.2% to 88.4% while the correlation coefficient for technical efficiency scores ranges from 0.632 to 0.976. There is significant technological regress, with an annual average of 16.8% and 17.7% for the two “best” models. The results indicate that alternative specifications can have a significant impact on the results, specifically on mean efficiency figures.
description: Published by Asociación de Economistas Agrarios de Chile
Medición de niveles de ruralidad y su relación con actividades económicas en la X Región de Los Lagos - Chile Enfoque Geográfico – Económico
Creators: name: Osses, P.
name: Foster, William E.
name: Nunez, R.
name: Osses, P.
name: Foster, William E.
name: Nunez, R.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Community/Rural/Urban Development
subject: Land Economics/Use
subject: Level of Rurality
subject: Geographic Approach
subject: Economic Activities

description: The rural economy is constituted of many economic activities as forest, fishing and of course agriculture, among others that are developed in nonurban areas. In this work the rural areas are analyzed from a spatial perspective (areal and georreferenced Information), in terms of density of population, distance to the centers of services and activities that are developed on them. The general objective is to quantify, characterize and hierarchize the rurality in the X Region of the Lakes – Chile, and to relate these levels to some developed economic activities. As specific objectives they are establish the density of population on a spatial resolution of 4.5 by 4.5 km, determine the levels of accessibility in terms of travel time for each density of population and characterize the economic activities and the relation of the income and level of poverty associated to the indicated spatial aspects. As work hypothesis subscribes that the size of the rural sector could be greater to the one officially indicated by the census of population. As results a gradient of rurality was done, constituting itself in a tool that allows in policy terms to understand better the effects that have the geographic conformation of a territory, as well as to identify better the situation and consequences of decisions at infrastructure level and other aspects of investment. Finally it constitutes a refinement of the concepts developed by the OECD, Chomitz (2004) and CIESIN.
description: Published by Asociación de Economistas Agrarios de Chile
The determinants of COVID-19 case fatality rate (CFR) in the Italian regions and provinces: an analysis of environmental, demographic, and healthcare factors
Creators: name: Perone, Gaetano
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The Italian government has been one of the most responsive to COVID-19 emergency, through the adoption of quick and increasingly stringent measures to contain the outbreak. Despite this, Italy has suffered a huge human and social cost, especially in Lombardy. The aim of this paper is dual: i) first, to investigate the reasons of the case fatality rate (CFR) differences across Italian 20 regions and 107 provinces, using a multivariate OLS regression approach; and ii) second, to build a taxonomy of provinces with similar mortality risk of COVID-19, by using the Ward hierarchical agglomerative clustering method. I considered health system metrics, environmental pollution, climatic conditions, demographic variables, and three ad hoc indexes that represent the health system saturation. The results showed that overall health care efficiency, physician density, and average temperature helped to reduce the CFR. By the contrary, population aged 70 and above, car and firm density, level of air pollutants (NO2, O3, PM10, and PM2.5), relative average humidity, COVID-19 prevalence, and all three indexes of health system saturation were positively associated with the CFR. Population density, social vertical integration, and altitude were not statistically significant. In particular, the risk of dying increases with age, as 90 years old and above had a three-fold greater risk than the 80 to 89 years old and four-fold greater risk than 70 to 79 years old. Moreover, the cluster analysis showed that the highest mortality risk was concentrated in the north of the country, while the lowest risk was associated with southern provinces. Finally, since prevalence and health system saturation indexes played the most important role in explaining the CFR variability, a significant part of the latter may have been caused by the massive stress of the Italian health system.
description: 20 pages, 4 figures, 6 tables
Oenopia diabolica Canepari
Creators: name: POORANI, J.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Coccinellidae
Oenopia
Oenopia diabolica

description: Oenopia diabolica Canepari
(Fig. 147)
Oenopia diabolica Canepari, 1997: 54 (Holotype female, MHNG; Type locality: Nepal).— Poorani 2002a: 337; Poorani 2002b: 104.
Diagnosis. Length: 3.15 mm. Form elongate oval, dorsum convex and glabrous. Ground colour reddish yellow to yellowish, pronotum with a large, subtrapezoidal, anteriorly emarginate black macula, elytra having two transverse fasciae not reaching lateral margins, first one along basal margin and the second much broader, reaching up to nearly 3/4 th of the elytral length (Fig. 147). Genitalia not studied.
Distribution. Nepal.
Note. Canepari (1997) described it based on a female specimen with poor illustrations of the genitalia and the abdominal postcoxal lines are described as ‘’’ .... Metacoxal lines of Diomus type ...”. It is unclear if it is a true Oenopia species.
description: Published as part of POORANI, J., 2023, An illustrated guide to lady beetles (Coleoptera: Coccinellidae) of the Indian Subcontinent. Part 1. Tribe Coccinellini, pp. 1-307 in Zootaxa 5332 (1) on page 207, DOI: 10.11646/zootaxa.5332.1.1, http://zenodo.org/record/8261502
The Joint Automated Repository for Various Integrated Simulations (JARVIS) for data-driven materials design
Creators: name: Choudhary, Kamal
name: Garrity, Kevin F.
name: Reid, Andrew C. E.
name: DeCost, Brian
name: Biacchi, Adam J.
name: Walker, Angela R. Hight
name: Trautt, Zachary
name: Hattrick-Simpers, Jason
name: Kusne, A. Gilad
name: Centrone, Andrea
name: Davydov, Albert
name: Jiang, Jie
name: Pachter, Ruth
name: Cheon, Gowoon
name: Reed, Evan
name: Agrawal, Ankit
name: Qian, Xiaofeng
name: Sharma, Vinit
name: Zhuang, Houlong
name: Kalinin, Sergei V.
name: Sumpter, Bobby G.
name: Pilania, Ghanshyam
name: Acar, Pinar
name: Mandal, Subhasish
name: Haule, Kristjan
name: Vanderbilt, David
name: Rabe, Karin
name: Tavazza, Francesca
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The Joint Automated Repository for Various Integrated Simulations (JARVIS) is an integrated infrastructure to accelerate materials discovery and design using density functional theory (DFT), classical force-fields (FF), and machine learning (ML) techniques. JARVIS is motivated by the Materials Genome Initiative (MGI) principles of developing open-access databases and tools to reduce the cost and development time of materials discovery, optimization, and deployment. The major features of JARVIS are: JARVIS-DFT, JARVIS-FF, JARVIS-ML, and JARVIS-Tools. To date, JARVIS consists of 40,000 materials and 1 million calculated properties in JARVIS-DFT, 1,500 materials and 110 force-fields in JARVIS-FF, and 25 ML models for material-property predictions in JARVIS-ML, all of which are continuously expanding. JARVIS-Tools provides scripts and workflows for running and analyzing various simulations. We compare our computational data to experiments or high-fidelity computational methods wherever applicable to evaluate error/uncertainty in predictions. In addition to the existing workflows, the infrastructure can support a wide variety of other technologically important applications as part of the data-driven materials design paradigm. The JARVIS datasets and tools are publicly available at the website: https://jarvis.nist.gov .
Estudio de la Eficiencia Técnica de Productores de Papas en Chile: El Rol del Programa de Transferencia Tecnológica de INDAP
Creators: name: Santos, Jozimo
name: Foster, William E.
name: Ortega, Jorge
name: Ramirez, E.
name: Santos, Jozimo
name: Foster, William E.
name: Ortega, Jorge
name: Ramirez, E.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Productivity Analysis
subject: stochastic frontiers
subject: technical efficiency
subject: program of technological transfer.

description: This study analyzes the technical efficiency of a group of potato producers from San Javier commune, in the VII Region of Chile. The data was obtained from a survey conducted by the Latin-American Center for Rural Development (RIMISP) in 2003, to a group of 118 producers. From the total sample, 59 are beneficiaries of INDAP’s Technology Transference Program (PTT), whereas the remaining 59 producers do not participate in the program. By means of the estimation of a frontier parametric model of gross income, indicators of technical efficiency were obtained using the Cobb-Douglas and Translog functional specifications. At the same time, a model of linear regression was estimated with the purpose of identifying the determinants of the technical inefficiencies. The results show important differences in the technical efficiency indicators, with a range that varies from 0,1 up to 0,9. It was also observed that the principal determinants of these differences are variables such as the property size, age of the household chief, distance from the property to the principal road, etc. Moreover, it was possible to prove in the model, with heteroscedasticity correction, that the PTT has a direct and significant effect on the technical efficiency of the producers. Nevertheless, it presents distinguishing effects on some groups of producers. Based on the results obtained, the paper proposes policy strategies such as: improvement of the rural infrastructure, strengthening of rural extension programs and actions toward enhancing the commercialization channels. This type of policies can help to increase the producers’ technical efficiency and also improve the chance of the PTT to have a positive impact.
description: Published by Asociación de Economistas Agrarios de Chile
MPEC 2024-A167 : 2024 AM4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 AM4

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Adsorption of para-Hydrogen on Krypton pre-plated graphite
Creators: name: Turnbull, Joseph
name: Boninsegni, Massimo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Adsorption of para-Hydrogen on the surface of graphite pre-plated with a single layer of atomic krypton is studied thoretically by means of Path Integral Ground State Monte Carlo simulations. We compute energetics and density profiles of para-hydrogen, and determine the structure of the adsorbed film for various coverages. Results show that there are two thermodynamically stable monolayer phases of para-hydrogen, both solid. One is commensurate with the krypton layer, the other is incommensurate. No evidence is seen of a thermodynamically stable liquid phase, at zero temperature. These results are qualitatively similar to what is seen for for para-hydrogen on bare graphite. Quantum exchanges of hydrogen molecules are suppressed in this system.
description: 12 pages, 6 figures, to appear in the proceedings of "Advances in Computational Many-Body Physics", Banff, Alberta (Canada), January 13-16 2005
Psychological abuse : the stories of women in heterosexual relationships
Creators: name: Baker, Andrea
Publisher: name: University of British Columbia
Year: 2009

description: Women in abusive relationships typically tell their stories many times before being truly heard by others. This is especially true of women in relationships characterized by psychological abuse. The purpose of the current study was to provide a more in-depth picture of psychological abuse within heterosexual relationships than that which had been captured by previous research. The narrative design resulted in a series of stories in which five women provided accounts of their lived experiences with psychological abuse. In addition to attending to the particulars of each narrative, a between-story analysis was conducted to facilitate the interpretive process and enrich the meta-narrative. The unique contribution made by the current study is that it established the impact of individual meaning on the experience of psychological abuse. The study successfully expanded upon the conceptualization of psychological abuse, enlightened counselling practice, and provided future researchers with a more accurate foundation from which to begin their exploration of this phenomenon.
Electrons and phonons in the ternary alloy CaAl$_{2-x}$Si$_x$} as a function of composition
Creators: name: Giantomassi, Matteo
name: Boeri, Lilia
name: Bachelet, Giovanni B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a detailed first-principles study of the structural, electronic and vibrational properties of the superconducting C$_{32}$ phase of the ternary alloy CaAl$_{2-x}$Si$_x$, both in the experimental range $0.6 \leq x \leq 1.2$, for which the alloy has been synthesised, and in the theoretical limits of high aluminium and high silicon concentration. Our results indicate that, in the experimental range, the dependence of the electronic bands on composition is well described by a rigid-band model, which breaks down outside this range. Such a breakdown, in the (theoretical) limit of high aluminium concentration, is connected to the appearance of vibrational instabilities, and results in important differences between CaAl$_2$ and MgB$_2$. Unlike MgB$_2$, the interlayer band and the out-of-plane phonons play a major role on the stability and superconductivity of CaAlSi and related C$_{32}$ intermetallic compounds.
Identificación de factores determinantes de conflictos laborales en el personal cosechero de arándanos
Creators: name: Magner, Nicolas
name: Arias, Juan
name: Martorell, Carolina
name: Magner, Nicolas
name: Arias, Juan
name: Martorell, Carolina
Publisher: name: Unknown
Year: 2007
Subjects: subject: Farm Management
subject: Labor and Human Capital
subject: Labour Agricultural Administration
subject: Labour Conflicts.

description: Labor conflicts constitute an area of relevant theoretical and practical study in order to understand organizational behavior. There exist situations and labor conflicts that influence the agricultural company and to know them is part of an appropriate management. In this sense, the aim is to approach and transform them into growth opportunities and productivity increases. The present work identifies causes of conflicts within a group of blueberry reapers through information generated from the application of a field survey. The information was analyzed through the application of multivariate methods, specifically factorial analysis of principal components in order to determine factors that represent causes of conflict. In this study, the factors named "labor causes" and “interpersonal causes" were obtained with 55,64% and 57,89% of the explained variance, respectively. Finally, by means of an analysis of hierarchical conglomerates, three segments or groups of workers in relation to the causes of identified conflicts were determined. They were, "Concerned over labor situation" equivalent to 24% of the sample, "Concerned over labor climate and discrimination" corresponding to 54% of the sample, and "Concerned over interpersonal relations" equivalent to the remaining 22%.
description: Published by Asociación de Economistas Agrarios de Chile
$A_0$ condensation, Nielsen's identity and effective potential of order parameter
Creators: name: Skalozub, Vladimir
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In high temperature SU(2) gluodynamics, the condensation of the zero component gauge field potential A_0 =const and its gauge-fixing dependence are investigated. A_0 is mutually related with Polyakov's loop . The two-loop effective potential W(A_0,xi) is recalculated in the background relativistic R_xi gauge. It depends on the parameter xi, has a nontrivial minimum and satisfies Nielsen's identity. These signs mean gauge invariance of the condensation phenomenon. Following the idea of Belyaev, we express W(A_0,xi) in terms of . The obtained effective potential of order parameter differs from that derived by this author. It is independent of xi and has a nontrivial minimum position. Hence the A_0 condensation follows. We show that the equation relating A_0 and (A_0)|_(classical) coincides with the special characteristic orbit in the (A)$-plain along which the W(A_0,xi) is xi-independent. In this way the link between these two gauge invariant descriptions is established. The minimum value of the Polyakov loop is calculated. Comparison with results of other authors is given.
description: 10 pages
Currents in a many-particle parabolic quantum dot under a strong magnetic field
Creators: name: Anisimovas, E.
name: Matulis, A.
name: Peeters, F. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Currents in a few-electron parabolic quantum dot placed into a perpendicular magnetic field are considered. We show that traditional ways of investigating the Wigner crystallization by studying the charge density correlation function can be supplemented by the examination of the density-current correlator. However, care must be exercised when constructing the correct projection of the multi-dimensional wave function space. The interplay between the magnetic field and Euler-liquid-like behavior of the electron liquid gives rise to persistent and local currents in quantum dots. We demonstrate these phenomena by collating a quasi-classical theory valid in high magnetic fields and an exact numerical solution of the many-body problem.
description: Uses RevTeX4, figures included in the text
Dinámica de transmisión de precios y cambio estructural en el sector lácteo chileno
Creators: name: Diaz, N.
name: Melo, Oscar
name: Modrego, Felix
name: Diaz, N.
name: Melo, Oscar
name: Modrego, Felix
Publisher: name: Unknown
Year: 2007
Subjects: subject: Consumer/Household Economics
subject: Milk price
subject: Price transmission
subject: Error correction model
subject: Structural break.

description: This paper examines the degree in which the signals of the international price of the main dairy product imported by Chile, powder milk, were transmitted to the price received by the producers in the period 1979-2005. The existence of a possible structural break in 1989 is also evaluated, due to the differences in trade policies oriented towards the Chilean milk sector. The results show that the international price had a significant influence over the domestic price, explaining 52% of the variability of the price of the milk received by the producer. The estimated speed of transmission was considerably low, and a total transmission was obtained for a period of three to four years. The hypothesis of structural break in the speed of transmission of international prices given by a reduction of the import taxes in 1989 was tested, and was rejected with a high level of statistical significance. This evidence suggests the existence of important changes within the Chilean milk sector that could have offset the effects of greater trade openness.
description: Published by Asociación de Economistas Agrarios de Chile
Elasticity, fluctuations and vortex pinning in ferromagnetic superconductors: A "columnar elastic glass"
Creators: name: Ettouhami, A. M.
name: Saunders, Karl
name: Radzihovsky, L.
name: Toner, John
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the elasticity, fluctuations and pinning of a putative spontaneous vortex solid in ferromagnetic superconductors. Using a rigorous thermodynamic argument, we show that in the idealized case of vanishing crystalline pinning anisotropy the long-wavelength tilt modulus of such a vortex solid vanishes identically, as guaranteed by the underlying rotational invariance. The vanishing of the tilt modulus means that, to lowest order, the associated tension elasticity is replaced by the softer, curvature elasticity. The effect of this is to make the spontaneous vortex solid qualitatively more susceptible to the disordering effects of thermal fluctuations and random pinning. We study these effects, taking into account the nonlinear elasticity, that, in three dimensions, is important at sufficiently long length scales, and showing that a ``columnar elastic glass'' phase of vortices results. This phase is controlled by a previously unstudied zero-temperature fixed point and it is characterized by elastic moduli that have universal strong wave-vector dependence out to arbitrarily long length scales, leading to non-Hookean elasticity. We argue that, although translationally disordered for weak disorder, the columnar elastic glass is stable against the proliferation of dislocations and is therefore a topologically ordered {\em elastic} glass. As a result, the phenomenology of the spontaneous vortex state of isotropic magnetic superconductors differs qualitatively from a conventional, external-field-induced mixed state. For example, for weak external fields $H$, the magnetic induction scales {\em universally} like $B(H)\sim B(0)+ c H^α$, with $α\approx 0.72$.
description: Minor editorial changes, version to be published in PRB, 39 pages, 7 figures
RAQAMLI TEXNOLOGIYALAR ASOSIDA O'QUVCHILARNING AXBOROT KOMPETENTLIGINI RIVOJLANTIRISH ORALI ZAMONAVIY KASBLARGA YO'NALTIRSHDAGI ILMIY AHAMIYATI
Creators: name: Nizomxonov, Erkinxon N.
name: Nizomxonov, Sanjarxon E.
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada raqamli texnologiyalar asosida o‘quvchilarning axborot kompetentligini rivojlantirish orali zamonaviy kasblarga yo‘naltirshdagi ilmiy ahamiyati sifatida “Kasblarga yo‘naltirishdagi axborotlar bilan kompetensiyasi”, “Kelajak kasblarni tanlashda axborot kompetentligini rivojlantirish”, “Kasbiy sohalarga integrasiyalash maqsadlaridagi axborot kompetentligini rivojlantirishning pedagogik muommolari” kabi tushunchalarni ilmiy tahlil qilish bilan mavzud adabiyotlarni o‘rganildi va muammolarni aniqlashni maqsad qilindi.
Economías de escala en la industria del vino de exportación en Chile
Creators: name: Marchant, Ricardo
name: Mora, Marcos
name: Magner, Nicolas
name: Marchant, Ricardo
name: Mora, Marcos
name: Magner, Nicolas
Publisher: name: Unknown
Year: 2007
Subjects: subject: Institutional and Behavioral Economics
subject: Production Economics
subject: Trans-logarithmic costs
subject: Scale economies
subject: Wine exports.

description: The wine sector has experienced a deep transformation of its technological processes and its commercial strategy that emphasizes the wine sale in the international markets. It is for this reason that it is important to evaluate the competitiveness of the industry in relation to the behavior of its average costs and the export levels, since they constitute the structural base of the commercial strategy. The objective of this investigation is to characterize the type of yields of scale that the exporting wine industry presents. For it, the cost to exports elasticity was estimated through an econometric model, elaborated from the translogarithmic cost function, and under the assumption of maximization of the benefit for the firms of the industry, for period 1981 - 2005. A cost-exports elasticity of 5,5 was determined, together with an exportfactors (capital and labour) elasticity of 0,18, with which it is concluded that the sector presents diseconomies of scale.
description: Published by Asociación de Economistas Agrarios de Chile
Random close packing revisited: How many ways can we pack frictionless disks?
Creators: name: Xu, Ning
name: Blawzdziewicz, Jerzy
name: O'Hern, Corey S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We create collectively jammed (CJ) packings of 50-50 bidisperse mixtures of smooth disks in 2d using an algorithm in which we successively compress or expand soft particles and minimize the total energy at each step until the particles are just at contact. We focus on small systems in 2d and thus are able to find nearly all of the collectively jammed states at each system size. We decompose the probability $P(ϕ)$ for obtaining a collectively jammed state at a particular packing fraction $ϕ$ into two composite functions: 1) the density of CJ packing fractions $ρ(ϕ)$, which only depends on geometry and 2) the frequency distribution $β(ϕ)$, which depends on the particular algorithm used to create them. We find that the function $ρ(ϕ)$ is sharply peaked and that $β(ϕ)$ depends exponentially on $ϕ$. We predict that in the infinite system-size limit the behavior of $P(ϕ)$ in these systems is controlled by the density of CJ packing fractions--not the frequency distribution. These results suggest that the location of the peak in $P(ϕ)$ when $N \to \infty$ can be used as a protocol-independent definition of random close packing.
description: 9 pages, 14 figures
Differential cross-section measurements for the electroweak production of dijets in association with a $Z$ boson in proton-proton collisions at ATLAS
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Differential cross-section measurements are presented for the electroweak production of two jets in association with a $Z$ boson. These measurements are sensitive to the vector-boson fusion production mechanism and provide a fundamental test of the gauge structure of the Standard Model. The analysis is performed using proton-proton collision data collected by ATLAS at $\sqrt{s}$=13 TeV and with an integrated luminosity of 139 fb$^{-1}$. The differential cross-sections are measured in the $Z\rightarrow \ell^+\ell^-$ decay channel ($\ell=e,μ$) as a function of four observables: the dijet invariant mass, the rapidity interval spanned by the two jets, the signed azimuthal angle between the two jets, and the transverse momentum of the dilepton pair. The data are corrected for the effects of detector inefficiency and resolution and are sufficiently precise to distinguish between different state-of-the-art theoretical predictions calculated using Powheg+Pythia8, Herwig7+Vbfnlo and Sherpa 2.2. The differential cross-sections are used to search for anomalous weak-boson self-interactions using a dimension-six effective field theory. The differential cross-section as a function of the signed azimuthal angle between the two jets is found to be particularly sensitive to the interference between the Standard Model and dimension-six scattering amplitudes and provides a direct test of charge-conjugation and parity invariance in the weak-boson self-interactions.
description: 55 pages in total, author list starting page 39, 12 figures, 8 tables, published in EPJ C 81 (2021) 163. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-27
A Generalized Gaussian Extension to the Rician Distribution for SAR Image Modeling
Creators: name: Karakuş, Oktay
name: Kuruoglu, Ercan E.
name: Achim, Alin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Signal Processing (eess.SP)
subject: Applications (stat.AP)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In this paper, we present a novel statistical model, $\textit{the generalized-Gaussian-Rician}$ (GG-Rician) distribution, for the characterization of synthetic aperture radar (SAR) images. Since accurate statistical models lead to better results in applications such as target tracking, classification, or despeckling, characterizing SAR images of various scenes including urban, sea surface, or agricultural, is essential. The proposed statistical model is based on the Rician distribution to model the amplitude of a complex SAR signal, the in-phase and quadrature components of which are assumed to be generalized-Gaussian distributed. The proposed amplitude GG-Rician model is further extended to cover the intensity SAR signals. In the experimental analysis, the GG-Rician model is investigated for amplitude and intensity SAR images of various frequency bands and scenes in comparison to state-of-the-art statistical models that include $\mathcal{K}$, Weibull, Gamma, and Lognormal. In order to decide on the most suitable model, statistical significance analysis via Kullback-Leibler divergence and Kolmogorov-Smirnov statistics are performed. The results demonstrate the superior performance and flexibility of the proposed model for all frequency bands and scenes and its applicability on both amplitude and intensity SAR images. The Matlab package is available at https://github.com/oktaykarakus/GG-Rician-SAR-Image-Modelling.
description: 20 Pages, 11 figures, 5 tables
Comparación de rentabilidad entre la producción de maíz convencional en Chile y la producción de maíz transgénico en Argentina
Creators: name: Diaz, Jose
name: Padilla Bravo, Carlos Antonio
name: Jara, Roberto
name: Diaz, Jose
name: Padilla Bravo, Carlos Antonio
name: Jara, Roberto
Publisher: name: Unknown
Year: 2007
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Grain corn
subject: Profitability
subject: Chile-Argentina
subject: Genetically modified organism.

description: This document discusses the profitability of grain corn taking into consideration different production scenarios, both in Chile and Argentina. First, the profitability of grain corn produced in Chile is analyzed under the assumption of land renting and considering different yields. Later on, Chilean and Argentinean profitability of grain corn production are compared, under the assumption of land renting and use of genetically modified seed (Bt and RR). In the case of Chile’s data, in order to gather the required input to perform this analysis, a producer survey was administered in Chile during 2001. The survey was conducted in the Región del Libertador Bernardo O´Higgins, the main grain corn production zone. Additionally, the data collected through the survey was updated to 2006 values. In the case of Argentina, average costs and yields from the main production areas were estimated and used. Findings indicate that Chilean producers require to yield at least 120 qqm/ha to surpass the gross margin of 500 US$/ha, minimum profitability expected by producers under the assumption of land ownership. Taking into account the lower yield obtained by Argentinean producers, the use of Bt and RR seeds does not seem to be a great advantage in terms of profitability, over all if it is compared with the use of conventional seed in Chile. However, a substantial increase of grain corn yield in Argentina would have a considerable impact on the business profitability in Chile, mostly if a scenario of land renting is considered.
description: Published by Asociación de Economistas Agrarios de Chile
Friedmann cosmology with a generalized equation of state and bulk viscosity
Creators: name: Meng, Xin-He
name: Ren, Jie
name: Hu, Ming-Guang
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The universe media is considered as a non-perfect fluid with bulk viscosity and described by a more general equation of state. We assume the bulk viscosity is a linear combination of the two terms: one is constant, and the other is proportional to the scalar expansion $θ=3\dot{a}/a$. The equation of state is described as $p=(γ-1)ρ+p_0$, where $p_0$ is a parameter. This model can be used to explain the dark energy dominated universe. Different choices of the parameters may lead to three kinds of fates of the cosmological evolution: no future singularity, big rip, or Type III singularity of Ref. [S. Nojiri, S.D. Odintsov, and S. Tsujikawa, Phys. Rev. D \textbf{71}, 063004 (2005)].
description: 5 pages and 4 figs
Charged Particle Dynamics in the Field of a Slowly Rotating Compact Star
Creators: name: Mirza, Babur M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the dynamics of a charged particle in the field of a slowly rotating compact star in the gravitoelectromagnetic approximation to the geodesic equation . The star is assumed to be surrounded by an ideal, highly conducting plasma (taken as a magnetohydrodynamic fluid) with a stationary, axially symmetric electromagnetic field. The general relativistic Maxwell equations are solved to obtain the effects of the background spacetime on the electromagnetic field in the linearized Kerr spacetime. The equations of motion are then set up and solved numerically to incorporate the gravitational as well as the electromagnetic effects. The analysis shows that in the slow rotation approximation the frame dragging effects on the electromagnetic field are absent. However the particle is directly effected by the rotating gravitational source such that close to the star the gravitational and electromagnetic field produce contrary effects on the particle's trajectory.
description: 10 pages, 6 figures in B & W PostScript Format
Excising a boosted rotating black hole with overlapping grids
Creators: name: Calabrese, Gioel
name: Neilsen, David
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We use the overlapping grids method to construct a fourth order accurate discretization of a first order reduction of the Klein-Gordon scalar field equation on a boosted spinning black hole blackground in axisymmetry. This method allows us to use a spherical outer boundary and excise the singularity from the domain with a spheroidal inner boundary which is moving with respect to the main grid. We discuss the use of higher order accurate energy conserving schemes to handle the axis of symmetry and compare it with a simpler technique based on regularity conditions. We also compare the single grid long term stability property of this formulation of the wave equation with that of a different first order reduction.
description: 20 pages, 12 figures
Additional file 3 of A systematic review and meta-analysis of the prevalence of bipolar disorder among homeless people
Creators: name: Ayano, Getinet
name: Shegaye Shumet
name: Getachew Tesfaw
name: Light Tsegay
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 3. The Quality of the included studies based on the NOS quality score, a 9 point score, Score 7 and above represented good quality; 6 to 7 represented moderate quality; and 0 and 5 represented poor quality.
Dynamic Multi-Branch Layers for On-Device Neural Machine Translation
Creators: name: Tan, Zhixing
name: Yang, Zeyuan
name: Zhang, Meng
name: Liu, Qun
name: Sun, Maosong
name: Liu, Yang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: With the rapid development of artificial intelligence (AI), there is a trend in moving AI applications, such as neural machine translation (NMT), from cloud to mobile devices. Constrained by limited hardware resources and battery, the performance of on-device NMT systems is far from satisfactory. Inspired by conditional computation, we propose to improve the performance of on-device NMT systems with dynamic multi-branch layers. Specifically, we design a layer-wise dynamic multi-branch network with only one branch activated during training and inference. As not all branches are activated during training, we propose shared-private reparameterization to ensure sufficient training for each branch. At almost the same computational cost, our method achieves improvements of up to 1.7 BLEU points on the WMT14 English-German translation task and 1.8 BLEU points on the WMT20 Chinese-English translation task over the Transformer model, respectively. Compared with a strong baseline that also uses multiple branches, the proposed method is up to 1.5 times faster with the same number of parameters.
description: Source code is available at https://github.com/THUNLP-MT/Transformer-DMB
Latent Space Approaches to Community Detection in Dynamic Networks
Creators: name: Sewell, Daniel K.
name: Chen, Yuguo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Embedding dyadic data into a latent space has long been a popular approach to modeling networks of all kinds. While clustering has been done using this approach for static networks, this paper gives two methods of community detection within dynamic network data, building upon the distance and projection models previously proposed in the literature. Our proposed approaches capture the time-varying aspect of the data, can model directed or undirected edges, inherently incorporate transitivity and account for each actor's individual propensity to form edges. We provide Bayesian estimation algorithms, and apply these methods to a ranked dynamic friendship network and world export/import data.
Oenopia excellens
Creators: name: POORANI, J.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Coccinellidae
Oenopia
Oenopia excellens

description: Oenopia excellens (Crotch)
(Fig. 148)
Dysis excellens Crotch, 1874: 160 (Lectotype female, BMNH; Type locality: “ Cochin China ”).
Dysis excellens: Korschefsky 1932: 298; Gordon 1985: 20.
Oenopia excellens: Poorani & Booth 2005: 2.
Oenopia excelens (sic): Kovář 2007: 72.
Diagnosis. Length: 2.88–3.06 mm, breadth: 2.52 mm. Form almost circular in male (Fig. 148a), distinctly more elongate and oval in female (Fig. 148b). Head black in female and yellow in male. Head yellow, pronotum and elytra dark pitchy brown to black, Pronotum black, sides and anterolateral corners white when alive, turning creamy yellow to yellow in preserved material. Scutellar shield black. Elytra black with four reddish-orange or yellow spots arranged in two rows, one in either half of elytra, anterior pair large and transverse, posterior pair more or less oval and much smaller. Ventral side dark brown except prothoracic hypomeron and mesepimeron whitish to creamy yellow, legs dark brown except femoral apices, tibiae, and tarsi much lighter brown. Male genitalia (Fig. 148d, e) and spermatheca (Fig. 148c) as illustrated.
Distribution. India: Northeastern region (Assam, Nagaland); Vietnam / Cambodia (“ Cochin China ”); Myanmar; Laos.
Prey / Associated habitat. The specimens examined were collected on citrus, guava, and rice from northeastern India (label data).
Seasonal occurrence. Collected during March–April, July and November (label data).
Notes. Originally described as Dysis excellens, it was transferred to Oenopia and redescribed by Poorani & Booth (2005). It is externally similar to Oenopia guttata (Blackburn, 1892), a species found in Australia and New Guinea. Kovář (2007) listed ‘ O. excelens’ as a new combination and wrongly synonymized O. guttata with ‘ O. excelens’.
description: Published as part of POORANI, J., 2023, An illustrated guide to lady beetles (Coleoptera: Coccinellidae) of the Indian Subcontinent. Part 1. Tribe Coccinellini, pp. 1-307 in Zootaxa 5332 (1) on page 208, DOI: 10.11646/zootaxa.5332.1.1, http://zenodo.org/record/8261502