cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Heavy Meson Physics: What have we learned in Twenty Years?
Creators: name: Grinstein, Benjamin
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I give a personal account of the development of the field of heavy quarks. After reviewing the experimental discovery of charm and bottom quarks, I describe how the field's focus shifted towards determination of CKM elements and how this has matured into a precision science.
description: This talk was presented during the ceremony awarding the Medalla 2003 of the Division of Particles and Fields of The Mexican Phsyical Society, at the IX Mexican Workshop on Particles and Fields; submitted for proceedings; 9 pages, 9 figures; replacement: fix multiple typos
Influence of the definition of dissipative events on their statistics
Creators: name: Buchlin, Eric
name: Galtier, Sebastien
name: Velli, Marco
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A convenient and widely used way to study the turbulent plasma in the solar corona is to do statistics of properties of events (or structures), associated with flares, that can be found in observations or in numerical simulations. Numerous papers have followed such a methodology, using different definitions of an event, but the reasons behind the choice of a particular definition (and not another one) is very rarely discussed. We give here a comprehensive set of possible event definitions starting from a one-dimensional data set such as a time-series of energy dissipation. Each definition is then applied to a time-series of energy dissipation issued from simulations of a shell-model of magnetohydrodynamic turbulence as defined in Giuliani and Carbone (1998), or from a new model of coupled shell-models designed to represent a magnetic loop in the solar corona. We obtain distributions of the peak dissipation power, total energy, duration and waiting-time associated to each definition. These distributions are then investigated and compared, and the influence of the definition of an event on statistics is discussed. In particular, power-law distributions are more likely to appear when using a threshold. The sensitivity of the distributions to the definition of an event seems also to be weaker for events found in a highly intermittent time series. Some implications on statistical results obtained from observations are discussed.
description: 8 pages, 13 figures. Submitted to Astronomy&Astrophysics
Additional file 1 of Ultrasound measurement of laryngeal structures in the parasagittal plane for the prediction of difficult laryngoscopies in Chinese adults
Creators: name: Hongwei Ni
name: Chunming Guan
name: Guangbao He
name: Bao, Yang
name: Dongping Shi
name: Yijun Zhu
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Physiology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Plant Biology

description: Additional file 1.
Perfil de consumo de nutrientes nas principais regiões metropolitanas do Brasil
Creators: name: Rodrigues, Cristiana Tristao
name: Coelho, Alexandre Braganca
name: Braga, Marcelo Jose
name: Gomes, Adriano Provezano
name: Rodrigues, Cristiana Tristao
name: Coelho, Alexandre Braganca
name: Braga, Marcelo Jose
name: Gomes, Adriano Provezano
Publisher: name: Unknown
Year: 2010
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Nutrient demand
subject: Household Budget Survey
subject: Almost Ideal Demand System Model

description: The main objective of this study was to analyze the pattern of nutrient intake in major metropolitan region of Brazil, seeking to identify the nutrient intake adequacy in the Brazilian families, and their evolution over time. The Almost Ideal System (AIDS) model was employed to estimate the demand for nutrients. The data used are from the Household Budget Survey of 1995 and 2003. The results indicated that the nutrient demand of the population has poor sensitivity to changes in prices. In addition, families tend to demand relatively more fat, cholesterol and carbohydrates than vitamins and minerals. It was found that there was worsening in the pattern of intake for most nutrients from 1995 to 2003, in relation to daily nutrient recommendations. Thus, despite the favorable changes to food consumption that have occurred in last decades, it is perceived deterioration in standards of intake of nutrients.
Gauge Theories of Dirac Type
Creators: name: Tolksdorf, Juergen
name: Thumstaedter, Torsten
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 51P05, 53C07, 70S05, 70S15, 83C22

description: A specific class of gauge theories is geometrically described in terms of fermions. In particular, it is shown how the geometrical frame presented naturally includes spontaneous symmetry breaking of Yang-Mills gauge theories without making use of a Higgs potential. In more physical terms, it is shown that the Yukawa coupling of fermions, together with gravity, necessarily yields a symmetry reduction provided the fermionic mass is considered as a globally well-defined concept. The structure of this symmetry breaking is shown to be compatible with the symmetry breaking that is induced by the Higgs potential of the minimal Standard Model. As a consequence, it is shown that the fermionic mass has a simple geometrical interpretation in terms of curvature and that the (semi-classical)"fermionic vacuum" determines the intrinsic geometry of space-time. We also discuss the issue of "fermion doubling" in some detail and introduce a specific projection onto the "physical sub-space" that is motivated from the Standard Model.
description: 50 pages, mistake in prop. 3.2 and its proof corrected, comments added, subsections added
Spin characterization and control over the regime of radiation-induced zero-resistance states
Creators: name: Mani, R. G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Over the regime of the radiation-induced zero-resistance states and associated oscillatory magnetoresistance, we propose a low magnetic field analog of quantum-Hall-limit techniques for the electrical detection of electron spin- and nuclear magnetic- resonance, dynamical nuclear polarization via electron spin resonance, and electrical characterization of the nuclear spin polarization via the Overhauser shift. In addition, beats observed in the radiation-induced oscillatory-magnetoresistance are developed into a method to measure and control the zero-field spin splitting due to the Bychkov-Rashba and bulk inversion asymmetry terms in the high mobility GaAs/AlGaAs system.
description: IEEE Transactions in Nanotechnology (to be published); 10 pages, 10 color figures
O que significam as medidas de produtividade da agricultura?
Creators: name: Alves, Eliseu Roberto De Andrade
name: Alves, Eliseu Roberto De Andrade
Publisher: name: Unknown
Year: 2010
Subjects: subject: Production Economics
subject: Yield
subject: Labor Productivity
subject: Total Factor Productivity
subject: Technical Efficiency
subject: Production Frontier

description: Some productivity measures area analyzed. The emphasis is on concepts, limitations and on some empirical results. Software is not discussed. The productivity measures are classified in optimized, whenever obtained by an optimization procedure, and not optimized, as yield, labor productivity and total factor productivity (ptf). The work shows when yields and total factor productivity say the same thing to conclude that this is possible only in a primitive agriculture where labor and land are the only factors of production used. This type of agriculture is present only in backward regions of Brazil. Hence yield, except in this situation, is a poor measure of profitability. Empirical works show that the development of Brazilian agriculture follows a path of land or total resource saving.
Defensive Approximation: Securing CNNs using Approximate Computing
Creators: name: Guesmi, Amira
name: Alouani, Ihsen
name: Khasawneh, Khaled
name: Baklouti, Mouna
name: Frikha, Tarek
name: Abid, Mohamed
name: Abu-Ghazaleh, Nael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In the past few years, an increasing number of machine-learning and deep learning structures, such as Convolutional Neural Networks (CNNs), have been applied to solving a wide range of real-life problems. However, these architectures are vulnerable to adversarial attacks. In this paper, we propose for the first time to use hardware-supported approximate computing to improve the robustness of machine learning classifiers. We show that our approximate computing implementation achieves robustness across a wide range of attack scenarios. Specifically, for black-box and grey-box attack scenarios, we show that successful adversarial attacks against the exact classifier have poor transferability to the approximate implementation. Surprisingly, the robustness advantages also apply to white-box attacks where the attacker has access to the internal implementation of the approximate classifier. We explain some of the possible reasons for this robustness through analysis of the internal operation of the approximate implementation. Furthermore, our approximate computing model maintains the same level in terms of classification accuracy, does not require retraining, and reduces resource utilization and energy consumption of the CNN. We conducted extensive experiments on a set of strong adversarial attacks; We empirically show that the proposed implementation increases the robustness of a LeNet-5 and an Alexnet CNNs by up to 99% and 87%, respectively for strong grey-box adversarial attacks along with up to 67% saving in energy consumption due to the simpler nature of the approximate logic. We also show that a white-box attack requires a remarkably higher noise budget to fool the approximate classifier, causing an average of 4db degradation of the PSNR of the input image relative to the images that succeed in fooling the exact classifier
description: ACM International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS 2021)
Desempenho competitivo das empresas de móveis de madeira: o caso do pólo moveleiro de Ubá - MG
Creators: name: Sousa, Eliane Pinheiro De
name: Soares, Naisy Silva
name: Silva, Marcio Lopes Da
name: Sousa, Eliane Pinheiro De
name: Soares, Naisy Silva
name: Silva, Marcio Lopes Da
Publisher: name: Unknown
Year: 2010
Subjects: subject: Industrial Organization
subject: Factorial analysis
subject: Competitive performance index
subject: Furniture companies
subject: Minas Gerais

description: The present work aimed to identify determinants of competitiveness of the furniture companies of the furniture center of Ubá/MG, as well as to measure a competitive performance index and to do a comparative analysis among the competitive profile of those companies in the different areas of the furniture center. For this, factorial analysis and multiple regression was used. The results showed that of 45 analyzed companies, most presented intermediate level of performance competitive or low competitive performance; and indicated a positive correlation among the variables number of suppliers, markup and organization of the companies in departments and the competitive performance.
Preço de reserva e "caronas" para o bem público: área de proteção ambiental (APA) São José - MG
Creators: name: Cirino, Jader Fernandes
name: Goncalves, Rosiane M. Lima
name: Lirio, Viviani Silva
name: Lima, Joao Eustaquio De
name: Cirino, Jader Fernandes
name: Goncalves, Rosiane M. Lima
name: Lirio, Viviani Silva
name: Lima, Joao Eustaquio De
Publisher: name: Unknown
Year: 2010
Subjects: subject: Environmental Economics and Policy
subject: Public goods
subject: São José EPA
subject: “Free Rider" problem
subject: Reservation price

description: Despite the importance of its ecosystem and being an environmental preservation area, the São José Environmental Protection Area (EPA) in the State of Minas Gerais has shown deterioration in recent years. Because of this, public policy becomes relevant to São José EPA´s conservation. Given to the difficulty of obtaining the true current benefits of those policies, the present article aimed at: a) to estimating benefit´s public policy obtaining of medium reservation's price, starting from the contingent valuation; e b) to analyzing the "free riders" in the demand for the improvement and preservation of EPA. It was possible to notice the "free riders's" existence, because people that enjoy the benefits of EPA are not willing to contribute for its preservation. As for reservation's price, it was obtained a monthly medium value quite significant of R$22,88, indicating that the population recognizes São José EPA as an important patrimony able to supply valuable environmental services.
Cool Customers in the Stellar Graveyard I: Limits to Extrasolar Planets Around the White Dwarf G29-38
Creators: name: Debes, J. H.
name: Sigurdsson, S.
name: Woodgate, B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present high contrast images of the hydrogen white dwarf G 29-38 taken in the near infrared with the Hubble Space Telescope and the Gemini North Telescope as part of a high contrast imaging search for substellar objects in orbit around nearby white dwarfs. We review the current limits on planetary companions for G29-38, the only nearby white dwarf with an infrared excess due to a dust disk. We add our recent observations to these limits to produce extremely tight constraints on the types of possible companions that could be present. No objects $>$ 6 M$_{Jup}$ are detected in our data at projected separations $>$ 12 AU, and no objects $>$ 16 M$_{Jup}$ are detected for separations from 3 to 12 AU, assuming a total system age of 1 Gyr. Limits for companions at separations $
description: 20 pages, 4 figures, Accepted to ApJ
Additional file 4 of Naturalisation in context: how nationality laws and procedures shape immigrants’ interest and ability to acquire nationality in six European countries
Creators: name: Huddleston, Thomas
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Plant Biology
subject: Computational Biology

description: Additional file 4: Table A1. Summary statistics.
Generalized Kahler geometry and manifest N=(2,2) supersymmetric nonlinear sigma-models
Creators: name: Lindstrom, Ulf
name: Rocek, Martin
name: von Unge, Rikard
name: Zabzine, Maxim
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Generalized complex geometry is a new mathematical framework that is useful for describing the target space of N=(2,2) nonlinear sigma-models. The most direct relation is obtained at the N=(1,1) level when the sigma model is formulated with an additional auxiliary spinorial field. We revive a formulation in terms of N=(2,2) semi-(anti)chiral multiplets where such auxiliary fields are naturally present. The underlying generalized complex structures are shown to commute (unlike the corresponding ordinary complex structures) and describe a Generalized Kahler geometry. The metric, B-field and generalized complex structures are all determined in terms of a potential K.
description: 20 pages, 2 figures, Journal Version
Valoração econômica da Gruta do Maquiné em Cordisburgo - MG
Creators: name: Paula, Zelia Rodrigues De
name: Gomes, Marilia Fernandes Maciel
name: Lima, Joao Eustaquio De
name: Coelho, Alexandre Braganca
name: Quintela, Mirelle C. De Abreu
name: Paula, Zelia Rodrigues De
name: Gomes, Marilia Fernandes Maciel
name: Lima, Joao Eustaquio De
name: Coelho, Alexandre Braganca
name: Quintela, Mirelle C. De Abreu
Publisher: name: Unknown
Year: 2010
Subjects: subject: Environmental Economics and Policy
subject: Maquiné cavern
subject: Environmental valuation
subject: Willingness-to-pay

description: The Maquiné Cavern is a natural resource system located at Cordisburgo, MG. It was built by nature in the last few thousand years. It’s a source of knowledge to researchers and income to local people. Therefore, it’s very important to preserve it. Visitors’ characteristics and econometric estimation of demand systems are key information which may be important to resource management decisions. Our objective was to find the economic value of the Maquiné Cavern. The analytical procedure was the Travel Cost method. Data were obtained by interviews. Results showed that most visitors have high educational levels and generally do not travel alone and visit Maquiné Cavern for the first time. The average willingness to pay for visits to the Maquiné Cavern, in each county, is R$ 80.654,81. The average willingness to pay, using individual data, is R$ 12.688,32. That estimated values do not show the real willingness to pay by individual for Maquiné Cavern visits since use values represent a small part of total economic value of this natural resource. However, estimated values an important to public policy and local conservation projects.
On the Chemical Potential of D-instantons in c=0 Noncritical String Theory
Creators: name: Ishibashi, Nobuyuki
name: Yamaguchi, Atsushi
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the chemical potential of D-instantons in c=0 noncritical string theory. In a recent work(hep-th/0405076), it was shown that the chemical potential can be calculated using the one matrix model. The calculation was done using the method of orthogonal polynomials and the authors obtained a universal value in the double scaling limit. We present an alternative method to calculate this value.
description: 15 pages
Cool Customers in the Stellar Graveyard II: Limits to Substellar Objects Around Nearby DAZ White Dwarfs
Creators: name: Debes, J. H.
name: Sigurdsson, S.
name: Woodgate, B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Results from a concerted Hubble Space Telescope (HST) survey of nearby white dwarfs for substellar objects is presented. A total of 7 DAZ white dwarfs with distances of $$ 18 M$_{Jup}$ for all of the targets. The lack of significant near infrared excesses for our targets limits any kind of unresolved companions present to be substellar. In light of these results we make several comments on the possibility of determining the origin of white dwarfs with metals in their atmospheres.
description: 11 pages, 7 figures, emulateapj, revisions to figures and text, to appear in September AJ
A novel high resolution delay locked loop
Creators: name: Saghafi, Ardeshir
Publisher: name: University of British Columbia
Year: 2009

description: With the rapid advances in semiconductor technology, modern digital systems operated at GHz frequency have been successfully developed for many years. As the chip size gets progressively bigger, and the number of logic gates and chip operating frequencies increase, the clock skew becomes increasingly more important in ensuring the proper functioning of VLSI chips. With a synchronous methodology, it is impossible to increase the clock speed further without reducing the clock skew on the chip. The Phase Locked Loops (PLLs) and Delay Locked Loops (DLLs) have been widely adopted to solve the clock skew problem. In recent years, Delay Locked Loops (DLL's) have been widely used for clock alignment due to their lower phase-error accumulation and faster locking time. In this thesis a novel high resolution DLL with less than 10 ps is proposed which combines the coarse and fine delay line into an efficient hybrid delay line. Consequently, it saves power and area.
Chiral transition and the chiral charge density of the hot and dense QCD matter
Creators: name: Shi, Chao
name: He, Xiao-Tao
name: Jia, Wen-Bao
name: Wang, Qing-Wu
name: Xu, Shu-Sheng
name: Zong, Hong-Shi
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the chirally imbalanced hot and dense strongly interacting matter by means of the Dyson-Schwinger equations (DSEs). The chiral phase diagram is studied in the presence of chiral chemical potential $μ_5$. The chiral quark condensate $\langle \barψ ψ\rangle$ is obtained with the Cornwall-Jackiw-Tomboulis (CJT) effective action in concert with the Rainbow truncation. Catalysis effect of dynamical chiral symmetry breaking (DCSB) by $μ_5$ is observed. We examine with two popular gluon models and consistency is found within the DSE approach, as well as in comparison with lattice QCD. The CEP location $(μ_E,T_E)$ shifts toward larger $T_E$ but constant $μ_E$ as $μ_5$ increases. A technique is then introduced to compute the chiral charge density $n_5$ from the fully dressed quark propagator. We find the $n_5$ generally increases with temperature $T$, quark number chemical potential $μ$ and $μ_5$. Since the chiral magnetic effect (CME) is typically investigated with peripheral collisions, we also investigate the finite size effect on $n_5$ and find an increase in $n_5$ with smaller system size.
Microscopic Entropy of the Black Ring
Creators: name: Cyrier, Michelle
name: Guica, Monica
name: Mateos, David
name: Strominger, Andrew
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A surprising new seven-parameter supersymmetric black ring solution of five-dimensional supergravity has recently been discovered. In this paper, M-theory is used to give an exact microscopic accounting of its entropy.
description: 5 pages; v2: References and acknowledgements added
Revealing an Equitable Income Allocation among Dairy Farm Partnerships
Creators: name: Dressler, Jonathan B.
name: Tauer, Loren W.
name: Dressler, Jonathan B.
name: Tauer, Loren W.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agricultural Finance
subject: Farm Management
subject: Dairy
subject: opportunity costs
subject: unpaid factors production
subject: net farm income
subject: operators’ labor
subject: capital
subject: management.

description: We formulate a method to determine an equitable division of dairy farm partnership income when partners provide unequal amounts of capital, labor, and management and empirically estimate this relationship. New York dairy farm financial data are used within fixed effects and random coefficient panel regression models to reveal a systematic division of dairy farm partnership income among operators’ labor, capital, and management while controlling for heterogeneity arising from differing herd size. Results indicate that controlling for time and heterogeneity across farms due to herd size are important factors when dividing net farm income among unpaid factors of production. Empirical estimates of allocating dairy farm partnership income to equity, operators’ labor, and management are presented.
Elachiptera Macquart 1835
Creators: name: Wheeler, Terry A.
name: Forrest, Jessica
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chloropidae
Elachiptera

description: Elachiptera Macquart Elachiptera Macquart, 1835: 621 (type species: Chlorops brevipennis Meigen, orig. des.) Ceratobarys Coquillett, 1898: 45 (type species: Hippelates eulophus Loew, orig. des.) syn. nov.
description: Published as part of Wheeler, Terry A. & Forrest, Jessica, 2002, A new species of Elachiptera Macquart from the Galápagos Islands, Ecuador, and the taxonomic status of Ceratobarys Coquillett (Diptera: Chloropidae), pp. 1-9 in Zootaxa 98 on page 2, DOI: 10.5281/zenodo.4619926
description: {"references": ["Macquart, J. (1835) Histoire naturelle des insectes. Dipteres. Vol. 2: 703 pp., pls. 13 - 24. Roret, Paris.", "Coquillett, D. W. (1898) Notes and descriptions of Oscinidae. Journal of the New York Entomological Society, 6, 44 - 49."]}
The Role Of Rural Women In Labor And Decision Making For Buffalo Enterprise In Egyptian Agriculture
Creators: name: Soliman, Ibrahim
name: Soliman, Ibrahim
Publisher: name: Unknown
Year: 2004
Subjects: Labor and Human Capital
Livestock Production/Industries

description: Presented at: 7TH WORLD BUFFALO CONGRESS 20-23 OCTOBER 2004, MAKATI SHANGRI-LA HOTEL, AYALA AVENUE, MAKATI CITY, PHILIPPINES
Tecnologia de produção de ovinos no Ceará Grupo de Pesquisa: Economia e Gestão do Agronegócio
Creators: name: De Oliveira Cabral, Jose Ednilson
name: Fernandes Alves, Francisco Selmo
name: De Oliveira Cabral, Jose Ednilson
name: Fernandes Alves, Francisco Selmo
Publisher: name: Unknown
Year: 2008
Subjects: subject: Livestock Production/Industries
subject: Ovinos
subject: Ceará
subject: tecnologia de produção
subject: Sheep
subject: technology production

description: Esse trabalho é parte de um survey amplo sobre a produção de ovinos no Ceará, incluindo a análise das características gerais das propriedades, perfil dos produtores, infraestrutura e nível de capitalização, indicadores financeiros, aspectos comerciais e tecnologia de produção. O objeto geral desse artigo é a descrição da tecnologia de produção adotada no estado. Para cumprir o objetivo, realizou-se uma pesquisa classificada quanto aos objetivos como descritiva e quanto à natureza ou abordagem do problema como qualitativa e quantitativa. Quanto ao delineamento o estudo caracterizou-se por uma ampla pesquisa de campo em 170 propriedades produtoras de ovinos no estado do Ceará. Estatísticas descritivas foram usadas na análise dos dados, com o uso do pacote estatístico SPSS, em especial o cálculo de médias e freqüências. Estes cálculos permitiram observar que o sistema de produção dominante é caracterizado por baixo nível geral tecnológico em todas as áreas – manejo, alimentação, reprodução e sanidade. The work is part of an extensive survey about sheep production in the Ceará state of Brazil. The general objective of this paper is to describe the prevalent production technology in farms sheep in this state. This objective was achieved through a survey of 170 sheep farmers. Descriptive statistics was applied in the data analysis with the use of SPSS package. From the analysis, it was possible to identify the prevalence of low technological level in the production of sheep, either in production, management, reproduction e feeding.
Totally geodesic property of the Hopf vector field
Creators: name: Yampolsky, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53B25, 53C42

description: We prove that the Hopf vector field is a unique one among geodesic covariantly normal unit vector fields on spheres such that the submanifold generated by the field is totally geodesic in the unit tangent bundle with Sasaki metric. As application, we give a new proof of stability (instability) of the Hopf vector field with respect to volume variation using standard approach from the theory of submanifolds and find exact boundaries for the sectional curvature of the Hopf vector field.
Grand Unification and Proton Stability Near the Peccei-Quinn Scale
Creators: name: Dias, Alex G.
name: Pleitez, V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that in an $SU(2)\otimes U(1)$ model with a DSF-like invisible axion it is possible to obtain (i) the convergence of the three gauge coupling constants at an energy scale near the Peccei-Quinn scale; (ii) the correct value for $\sin^2\hatθ_W(M_Z)$; (iii) the stabilization of the proton by the cyclic $Z_{13}\otimes Z_3$ symmetries which also stabilize the axion as a solution to the strong CP problem. Concerning the convergence of the three coupling constants and the prediction of the weak mixing angle at the $Z$-peak, this model is as good as the minimal supersymmetric standard model with $μ_{\rm SUSY}=M_Z$. We also consider the standard model with six and seven Higgs doublets. The main calculations were done in the 1-loop approximation but we briefly consider the 2-loop contributions.
description: 12 pages, 4 figures
title: 01_2137
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Normal-Superconducting Phase Transition Mimicked by Current Noise
Creators: name: Sullivan, M. C.
name: Frederiksen, T.
name: Repaci, J. M.
name: Strachan, D. R.
name: Ott, R. A.
name: Lobb, C. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: As a superconductor goes from the normal state into the superconducting state, the voltage vs. current characteristics at low currents change from linear to non-linear. We show theoretically and experimentally that the addition of current noise to non-linear voltage vs. current curves will create ohmic behavior. Ohmic response at low currents for temperatures below the critical temperature $T_c$ mimics the phase transition and leads to incorrect values for $T_c$ and the critical exponents $ν$ and $z$. The ohmic response occurs at low currents, when the applied current $I_0$ is smaller than the width of the probability distribution $σ_I$, and will occur in both the zero-field transition and the vortex-glass transition. Our results indicate that the transition temperature and critical exponents extracted from the conventional scaling analysis are inaccurate if current noise is not filtered out. This is a possible explanation for the wide range of critical exponents found in the literature.
description: 4 pages, 2 figures
ANÁLISE DAS MEDIDAS DE RENDA, DISTRIBUIÇÃO E POBREZA DOS MUNICÍPIOS DA ÁREA DE INFLUÊNCIA DA BARRAGEM CASTANHÃO CEARÁ
Creators: name: Campos, Roberio Telmo
name: Campos, Kilmer Coelho
name: Campos, Roberio Telmo
name: Campos, Kilmer Coelho
Publisher: name: Unknown
Year: 2008
Subjects: subject: Community/Rural/Urban Development
subject: Renda
subject: distribuição de renda
subject: pobreza
subject: Barragem Castanhão
subject: Income
subject: income distribution
subject: poverty
subject: Castanhão dam

description: Objetiva-se realizar o macrodiagnóstico econômico-social dos municípios que compõem a área de influência do reservatório da barragem Castanhão no Estado do Ceará. Utilizam-se dados secundários e o método descritivo para análise e discussão dos resultados, após cálculos de freqüências, tabelas e outras informações estatísticas selecionadas. Os resultados mostram que, em termos gerais, os municípios apresentaram rendas per capita muito baixas; a desigualdade de renda piorou para todos os municípios da amostra; no período de 1991 a 2002 houve melhora do IDH para todos os municípios do estudo; a percentagem de indigentes, a percentagem de pobres e as percentagens de crianças indigentes e pobres reduziram-se durante o período de 1991 a 2000; e, há um elevado percentual de pessoas com rendimentos de até um salário mínimo. This study aims to carry out the economic-social macro-assessment of the municipalities that compose the area of influence of the Castanhão dam in the State of Ceará. It was used secondary data and descriptive method for the analysis and discussion of the results, after the calculations of frequencies, tables and other selected statistical information. The results show that, in general terms, the municipalities had very low per capita incomes; the income inequality increased for all municipalities of the sample; in the period from 1991 to 2002, there was no improvement on the municipalities’ overall HDI; the percentage of indigents, the percentage of poor and the percentages of indigent and poor children reduced during the period from 1991 to 2000, and there is a high percentage of people with incomes of up to a minimum wage.
How Much Do Consumers Benefit from New Brand Introductions? The Case of Potato Chips
Creators: name: Arnade, Carlos Anthony
name: Gopinath, Munisamy
name: Pick, Daniel H.
name: Arnade, Carlos Anthony
name: Gopinath, Munisamy
name: Pick, Daniel H.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: city-demand system
subject: compensating variation
subject: consumer welfare
subject: new brands
subject: virtual prices

description: This study identifies consumer welfare from new brand introductions in the potato chip market. Price and variety effects of new brand introduction are measured by estimating a demand system underlying an expenditure function. Variety effects are positive in most cities, while price effects are generally negative when consumers exhibit some variety preference. Variety effects dominate price effects in most cities; an opposite effect observed in some cities may indicate high entry barriers or joint brand- and price-based marketing strategies. Results indicate that consumers and producers gain from product innovations, but substantial regional variation exists in the distributional effects of new brand introduction.
The Economics of Commonly Owned Groundwater When User Demand Is Perfectly Inelastic
Creators: name: Wang, Chenggang
name: Segarra, Eduardo
name: Wang, Chenggang
name: Segarra, Eduardo
Publisher: name: Unknown
Year: 2011
Subjects: subject: Resource /Energy Economics and Policy
subject: common-pool resources
subject: groundwater extraction
subject: groundwater management
subject: groundwater use
subject: irrigation water demand
subject: optimal control
subject: pumping externality
subject: water demand elasticity

description: This paper provides a theoretical analysis of the common-pool resource dilemma in extracting nonrenewable groundwater resources when water demand is perfectly inelastic. It complements the existing theory of groundwater use, which assumes away the possibility of demand perfect inelasticity. Under perfectly inelastic water demand, the common-pool resource dilemma is by-passed if groundwater users are equally productive in water use. If they are not, a new type of inefficiency can arise due to the lack of a rationing mechanism on the basis of productivity. Our analysis suggests that groundwater management research should pay more attention to water demand elasticity and productivity heterogeneity.
Regularity of solutions to stochastic Volterra equations with infinite delay
Creators: name: Karczewska, Anna
name: Lizama, Carlos
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 60H20; 60H05

description: In this article we give necessary and sufficient conditions providing regularity of solutions to stochastic Volterra equations with infinite delay on a $d$-dimensional torus. The harmonic analysis techniques and stochastic integration in function spaces are used. The work applies to both the stochastic heat and wave equations.
description: 10 pages, corected and revised version. Proc. AMS (in print)
Carbon Sequestration in Agricultural Soils
Creators: name: Wilman, Elizabeth A.
name: Wilman, Elizabeth A.
Publisher: name: Unknown
Year: 2011
Subjects: Land Economics/Use
Resource /Energy Economics and Policy

description: Although it is common to alternate between till and no-till practices, past research has considered farmers’ tillage options to be limited to the dichotomous choice of whether or not to switch to a long-term no-till regime. This paper expands farmers’ options and models their choices of tillage frequency. Less frequent tilling sequesters more carbon but permits a greater accumulation of weeds, whereas more frequent tilling eliminates weeds but releases carbon (tillage emissions). The timing of tillage balances its marginal benefits and costs. Higher payments from industry or government for atmospheric greenhouse gas reductions will increase marginal cost and reduce tillage frequency. Other key parameters, such as higher rates of tillage emissions or reduced weed impact, also influence tillage frequency. However, for the discount rate and the natural decay rate of carbon, the net change depends on the magnitude of other parameters.
Machinery-Sharing Contractual Issues and Impacts on Cash Flows of Agribusinesses
Creators: name: Wolfley, Jared L.
name: Mjelde, James W.
name: Klinefelter, Danny A.
name: Salin, Victoria
name: Wolfley, Jared L.
name: Mjelde, James W.
name: Klinefelter, Danny A.
name: Salin, Victoria
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: combines
subject: machinery sharing
subject: risk
subject: simulation

description: Contractual arrangements for joint machinery ownership between independent agribusinesses are explored. A two-farm economic simulation model of locations in Texas, Colorado, and Montana is developed to provide insight associated with sharing combines. Important variables include combine size (efficiency), yield losses resulting from untimely access to equipment, the penalty structure for untimely delivery, and cost-sharing and depreciation deductions claimed between producers. Combine sharing is risk-reducing in most cases. The gains to both parties are lowest when harvesting periods overlap. While the value of sharing is positive under many scenarios, benefits from sharing are small relative to total farm revenue.
Additional file 3 of Naturalisation in context: how nationality laws and procedures shape immigrants’ interest and ability to acquire nationality in six European countries
Creators: name: Huddleston, Thomas
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Plant Biology
subject: Computational Biology

description: Additional file 3: Annex A1. Overview of the Immigrant Citizens Survey.
Optimal power control for network-centric and user-centric wireless networks in interference-limited fading channels
Creators: name: Paul, Piplu Rani
Publisher: name: University of British Columbia
Year: 2009

description: Efficient allocation of transmitter power is of paramount importance in wireless networks for both longer battery life of the mobile devices and increased utilization of the scarce wireless spectrum. Traditional power control scheme updates power whenever the fading state of the channel is changed. This approach consumes a lot of signal processing energy and may be impractical for fast-fading channels. Alternative approach is to take the statistical variation of the signal-to-interference and noise ratio of each transmitter/receiver pair into account and allocate power to optimize outage, power or utility. We address the problem of optimal power control for interferencelimited wireless networks with both Rayleigh faded desired and interference signals assuming latter approach. Unlike most of the works in the literature that use complex non-linear optimization techniques or approximate heuristic- based methods, we propose simple methods to solve the optimal power control problems. We formulate the problems from the viewpoint of both user and network. In outage-based formulations, we minimize the worst outage probability over all transmitter/receiver pairs. In utility-based formulations, which are more suitable for wireless data networks, we consider the problem of maximizing minimum utility over all transmitter/receiver pairs for network-centric scheme and individual utility for user-centric scheme. In all the schemes, we put non-negativity constraints on all the transmitted powers. We also formulate problem that minimizes the total power with specified bounds on the individual outage probability. With appropriate transformation techniques, we convert the complex constrained optimization problems into equivalent unconstrained problems, which are suitably solved using either DFP method or BFGS method. We perform extensive numerical simulations, which reveal that our proposed algorithms are very efficient to converge to the optimal solution with few iterations.
Tax-Deferred Retirement Savings of Farm Households: An Empirical Investigation
Creators: name: Mishra, Ashok K.
name: Chang, Hung-Hao
name: Mishra, Ashok K.
name: Chang, Hung-Hao
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agricultural Finance
subject: Consumer/Household Economics
subject: double-hurdle estimation
subject: farm households
subject: probit
subject: retirement savings
subject: risk preference
subject: total household income

description: This study examines factors affecting tax-deferred retirement savings among farm households. A double-hurdle model is estimated using 2003 Agricultural Resource Management Survey (ARMS) farm-level national data. Results indicate that demographic factors, total household income, off-farm work, and risk preference play important roles in retirement savings plan participation. Retirement savings increase with household size, intensity of off-farm work by farm operator and spouse, and size of farming operation. We find that the amount of retirement savings decreases with operator’s age and increases with spouse’s age, and that cash grain and dairy farmers have lower retirement savings.
Modeling Stochastic Crop Yield Expectations with a Limiting Beta Distribution
Creators: name: Hennessy, David A.
name: Hennessy, David A.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Crop Production/Industries
subject: crop abandonment
subject: crop insurance
subject: derivative analysis
subject: growing degree days
subject: Pólya’s urn
subject: stochastic process

description: The use of plausible stochastic price processes in price risk analysis has allowed advances not seen in crop yield risk analysis. This study develops a stochastic process for yield modeling and risk management. The Pólya urn process is an internally consistent dynamic representation of yield expectations over a growing season that accommodates agronomic events such as growing degree days. The limiting distribution is the commonly used beta distribution. Binomial tree analysis of the process allows us to explore hedging decisions and crop valuation. The method is empirically flexible to accommodate alternative assumptions on the growing environment, such as intra-season input decisions.
Modeling Yield Risk Under Technological Change: Dynamic Yield Distributions and the U.S. Crop Insurance Program
Creators: name: Zhu, Ying
name: Goodwin, Barry K.
name: Ghosh, Sujit K.
name: Zhu, Ying
name: Goodwin, Barry K.
name: Ghosh, Sujit K.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Crop Production/Industries
subject: Risk and Uncertainty
subject: crop insurance
subject: model comparison
subject: time-varying distribution

description: The objective of this study is to evaluate the risk associated with major agricultural commodity yields in the United States. We are particularly concerned with the nonstationary nature of the yield distribution, which arises primarily as a result of technological progress and changing environmental conditions over time. In contrast to common two-stage methods, we propose an alternative parametric model that allows the moments of yield distributions to change with time. Several model selection techniques suggest the proposed time-varying model outperforms more conventional models in terms of in-sample goodness-of-fit, out-of-sample predictive power, and the prediction accuracy of insurance premium rates.
Improved $(g-2)_μ$ Measurements and Supersymmetry
Creators: name: Chakraborti, Manimala
name: Heinemeyer, Sven
name: Saha, Ipsita
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The electroweak (EW) sector of the Minimal Supersymmetric Standard Model (MSSM) can account for a variety of experimental data. The lighest supersymmetric particle (LSP), which we take as the lightest neutralino, $\tilde χ_1^0$, can account for the observed Dark Matter (DM) content of the universe via coannihilation with the next-to-LSP (NLSP), while being in agreement with negative results from Direct Detection (DD) experiments. Owing to relatively small production cross-sections a comparably light EW sector of the MSSM is also in agreement with the unsuccessful searches at the LHC. Most importantly, the EW sector of the MSSM can account for the persistent $3-4\,σ$ discrepancy between the experimental result for the anomalous magnetic moment of the muon, $(g-2)_μ$, and its Standard Model (SM) prediction. Under the assumption that the $\tilde χ_1^0$ provides the full DM relic abundance we first analyze which mass ranges of neutralinos, charginos and scalar leptons are in agreement with all experimental data, including relevant LHC searches. We find an upper limit of $\sim 600$ GeV for the LSP and NLSP masses. In a second step we assume that the new result of the Run 1 of the ``MUON G-2'' collaboration at Fermilab yields a precision comparable to the existing experimental result with the same central value. We analyze the potential impact of the combination of the Run 1 data with the existing $(g-2)_μ$ data on the allowed MSSM parameter space. We find that in this case the upper limits on the LSP and NLSP masses are substantially reduced by roughly $100$ GeV. This would yield improved upper limits on these masses of $\sim 500$ GeV. In this way, a clear target could be set for future LHC EW searches, as well as for future high-energy $e^+e^-$ colliders, such as the ILC or CLIC.
description: Typos corrected, matches published EPJC version