cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Formation of giant planets in disks with different metallicities
Creators: name: Kornet, Kacper
name: Bodenheimer, Peter
name: Rozyczka, Michal
name: Stepinski, Tomasz F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first results from simulations of processes leading to planet formation in protoplanetary disks with different metallicities. For a given metallicity, we construct a two-dimensional grid of disk models with different initial masses and radii ($M_0$, $R_0$). For each disk, we follow the evolution of gas and solids from an early evolutionary stage, when all solids are in the form of small dust grains, to the stage when most solids have condensed into planetesimals. Then, based on the core accretion - gas capture scenario, we estimate the planet-bearing capability of the environment defined by the final planetesimal swarm and the still evolving gaseous component of the disk. We define the probability of planet-formation, $P_p$, as the normalized fractional area in the ($M_0$, $\log R_0$) plane populated by disks that have formed planets inside 5 AU. With such a definition, and under the assumption that the population of planets discovered at $R$ $$ 5 AU, our results agree fairly well with the observed dependence between the probability that a star harbors a planet and the star's metal content. The agreement holds for the disk viscosity parameter $α$ ranging from $10^{-3}$ to $10^{-2}$, and it becomes much poorer when the redistribution of solids relative to the gas is not allowed for during the evolution of model disks.
description: Accepted for publication in A&A. 6 pages, 6 figures
Os Alicerces Sociopolíticos do Cooperativismo de Crédito Rural Solidário na Zona da Mata de Minas Gerais
Creators: name: Freitas, Alair Ferreira De
name: Freitas, Alan Ferreira De
name: Freitas, Alair Ferreira De
name: Freitas, Alan Ferreira De
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Credit unions
subject: family farms
subject: social network.

description: The objective of this paper is to analyze processes and social structures that supported and conditioned the constitution and actuation of credit unions linked to the system Ecosol at Zona da Mata Mineira. Data collection occurred in 2010 in the municipalities where the Ecosol has service units, Araponga, Tombos, Espera Feliz, Divino and Simonésia, through participant observation, document analysis and application of semi-structured interviews. The main actors and factors identified as socio-political foundations of these cooperatives were: mystical and religious, introduced by sectors of the Catholic Church, which directly interfere in the social representations and symbolic manifestations that guided interventions for a change of reality; politics, marked by the union movement and party (Workers Party); and the technical and lifestyle, consolidated with the adoption of a project of sustainable agriculture and alternative development introduced by an NGO.
Determinantes da Demanda de Crédito Rural por Pecuaristas de Corte no Estado de São Paulo
Creators: name: Carrer, Marcelo José
name: Souza Filho, Hildo Meirelles De
name: Vinholis, Marcela De Mello Brandão
name: Carrer, Marcelo José
name: Souza Filho, Hildo Meirelles De
name: Vinholis, Marcela De Mello Brandão
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Rural credit
subject: beef cattle
subject: demand
subject: logit model.

description: The aim of this paper is to identify determinants of demand and access to rural credit by beef cattle farmers in the São Paulo State. Primary data were collected from 86 beef cattle farmers through a questionnaire survey. The empirical analysis of the survey data is performed with the estimation of a logit model. The results show that all farmers who demanded credit in 2010 had access to it. The logit model results showed that farmers who own more farms are more intensive in production technology, receive non-farm activities income, are younger, adopt price risk management and are members of organizations related to rural production have higher probability to demand and access rural credit. Finally, some suggestions were presented for the rural credit policy for beef cattle in São Paulo State.
The Relativistic Dirac-Brueckner Approach to Asymmetric Nuclear Matter
Creators: name: van Dalen, E. N. E.
name: Fuchs, C.
name: Faessler, Amand
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The properties of asymmetric nuclear matter have been investigated in a relativistic Dirac-Brueckner-Hartree-Fock framework using the Bonn A potential. The components of the self-energies are extracted by projecting on Lorentz invariant amplitudes. Furthermore, the optimal representation scheme for the $T$ matrix, the subtracted $T$ matrix representation, is applied and the results are compared to those of other representation schemes. Of course, in the limit of symmetric nuclear matter our results agree with those found in literature. The binding energy $E_b$ fulfills the quadratic dependence on the asymmetry parameter and the symmetry energy is 34 MeV at saturation density. Furthermore, a neutron-proton effective mass splitting of $m_n^* < m_p^*$ is found. In addition, results are given for the mean-field effective coupling constants.
description: 28 pages, 7 figures, to appear in Nucl. Phys. A, added additional references
Assimetria de Transmissão de Preço na Comercialização da Uva Fina de Mesa no Paraná: 1997 a 2011
Creators: name: Alves, Alexandre Florindo
name: Tonin, Julyerme Matheus
name: Carrer, Marcelo José
name: Alves, Alexandre Florindo
name: Tonin, Julyerme Matheus
name: Carrer, Marcelo José
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Fine table grape
subject: impulse-response
subject: causality.

description: Paraná State is a leading fine table grape producer in Brazil, and is characterized by the presence of small and medium producers. This study aims to analyze price transmission asymmetry (PTA) among producer, wholesale and retail levels from January 1997 to October 2011. Vector Autoregressive (VAR) was used to determine how price transmission occurs among players. The model used for PTA measuring was based on the methodology developed by Griffith and Piggott (1994). Results shows that, in the price transmission to the retail, wholesale presented a greater elasticity coefficient than the producer level; the Granger wholesale-retail unicausality is an evidence of asymmetric information; and price increases are transmitted faster than decreases, which, added to Griffith and Piggott’s t test results, confirm the existence of price transmission asymmetry.
Caracterização do Nível Tecnológico dos Apicultores do Estado do Rio de Janeiro
Creators: name: Ponciano, Niraldo José
name: Golynski, Adelmo
name: Souza, Paulo Marcelo De
name: Ney, Marlon Gomes
name: Ney, Vanuza Da Silva Pereira
name: Ponciano, Niraldo José
name: Golynski, Adelmo
name: Souza, Paulo Marcelo De
name: Ney, Marlon Gomes
name: Ney, Vanuza Da Silva Pereira
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Beekeeping
subject: factor analysis
subject: technological level.

description: The study examines and seeks grants to generate and transfer compatible technologies with the socioeconomic status of beekeepers. Data were extracted from the Census Beekeeping, involving 75 municipalities with significant beekeeping activity. Factor analysis was used to characterize the technological level of beekeepers. The results showed low technological level. Using the factor scores the gross rate of development was calculated. With higher values of this index, Conceição de Macabu, Areal, Duas Barras, Rio Claro, Cardoso Moreira, Cachoeiras de Macacu, Campos dos Goytacazes, Natividade e Nova Iguaçu cities were highlighted. It was found that the level of education has affected positively the development of beekeepers. This development was also affected by the technical assistance, by the management and exchange of queen practice and by the migratory beekeeping. Thus, the modernization of beekeepers to improve the technological level, expand productivity and diversify their production necessarily involves knowledge level of the beekeeper and the socioeconomic situation.
Reestructuración del Sector Agrario1 en Chile 1975-2010: entre el proteccionismo del Estado y el modelo económico neoliberal
Creators: name: Ríos-Núñez, Sandra
name: Ríos-Núñez, Sandra
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Economic restructuring
subject: state and agro-export model.

description: In the period from 1975 to 2010, the development model of Chilean agriculture has been a paradigm of growth based on a significant change of farming, which produces a shift towards non-traditional productions for export as the basis of economic growth. Economic restructuring in the mid-seventies imposed a neoliberal economic model that fostered those productive activities with capabilities to trade products in international markets. These are, in particular, non-traditional agricultural products, such as fruit sector and forest industry (mainly wood and pulp). The Chilean fruit paradigm worked on a high level of debt with banks and excessive power concentration in large buyers (especially US markets). The model was successful while it was high on profitability and costs were controlled. However, in recent years, profit margins have been decreasing, which questions the export model as currently operated. Therefore, the Chilean agriculture model is at an important crossroads that requires rethinking the basis on which it has sustained. This research is based on New political economy of agriculture, Food regimes and Economic structuralism as theoretical and methodological tools to analyze the above mentioned processes.
Stability of compact breathers in translationally-invariant nonlinear chains with flat dispersion bands
Creators: name: Perchikov, Nathan
name: Gendelman, O. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The paper addresses compact oscillatory states (compact breathers) in translationally-invariant lattices with flat dispersion bands. The compact breathers appear in such systems even in the linear approximation. If the interactions are nonlinear, but comply with the flat-band symmetry, the compact breather solutions exist, but can lose their stability for certain parameter values. As benchmark nonlinear potentials, we use the $β$-FPU (Fermi-Pasta-Ulam) and vibro-impact models. Loss of stability is numerically observed to occur through either pitchfork or Hopf bifurcations. The loss of stability can occur through two qualitatively different mechanisms -- through internal instability in the basic lattice elements, or through interaction of the compact breather with the linear passband of the lattice. The former scenario is more typical for high-amplitude breathers, and the latter -- for low amplitudes. For the high-amplitude case, insights into the nature of compact-mode loss-of-stability are obtained by resorting to the limit of a piecewise-linear system, where interactions are represented by conservative impacts. This issue calls for detailed introspection into integrability of piecewise-linear (impacting) systems and their relation to the smooth system. An idea for a sensor based on the studied mechanisms is suggested.
description: 27 pages, 17 figures
Gravitational Fields and Gravitational Waves
Creators: name: Yuan, Tony
name: Yuan, Tony
Publisher: name: figshare
Year: 2021
Subjects: subject: 20399 Classical Physics not elsewhere classified
subject: FOS: Physical sciences
subject: General Relativity

description: For any object with finite velocity, the relative velocity between them will aﬀect the eﬀect between them. This eﬀect can be called the chasing eﬀect (general Doppler eﬀect). LIGO discovered gravitational waves and measured the speed of gravitational waves equal to the speed of light c. Gravitational waves are generated due to the disturbance of the gravitational field, and the gravitational waves will aﬀect the gravitational force on the object. We know that light waves have the Doppler eﬀect, and gravitational waves also have this characteristic. The article studies the following questions around gravitational waves: What is the spatial distribution of gravitational waves? Can the speed of the gravitational wave represent the speed of the gravitational field (the speed of the action of the gravitational field on the object)? What is the speed of the gravitational field? Will gravitational waves caused by the revolution of the sun aﬀect planetary precession?
Reduction Groups and Automorphic Lie Algebras
Creators: name: Lombardo, S.
name: Mikhailov, A. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: 17B65; 11F03; 37K10

description: We study a new class of infinite dimensional Lie algebras, which has important applications to the theory of integrable equations. The construction of these algebras is very similar to the one for automorphic functions and this motivates the name automorphic Lie algebras. For automorphic Lie algebras we present bases in which they are quasigraded and all structure constants can be written out explicitly. These algebras have a useful factorisations on two subalgebras similar to the factorisation of the current algebra on the positive and negative parts.
description: 21 pages, standard LaTeX2e, corrected typos, accepted for publication in CMP - Communications in Mathematical Physics
One-Loop Maximal Helicity Violating Amplitudes in N=4 Super Yang-Mills Theories
Creators: name: Luo, Mingxing
name: Wen, Congkao
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: One-loop maximal helicity violating (MHV) amplitudes in N=4 super Yang-Mills (SYM) theories are analyzed, using the prescription of Cachazo, Svrcek, and Witten (CSW). The relations between leading N_c amplitudes A_{n;1} and sub-leading amplitudes A_{n;c} obtained by the CSW prescription are found to be identical to those obtained from conventional field theory calculations. Combining with existing results, this establishes the validity of the CSW prescription to one-loop in the calculation of MHV amplitudes in N=4 SYM theories of finite N_c.
description: Minor changes and typos fixed. Published version in JHEP
Applications to cosmological models of a complex scalar field coupled to a U(1) vector gauge field
Creators: name: Alves, Daniele S. M.
name: Kremer, Gilberto M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider the Abelian model of a complex scalar field coupled to a gauge field within the framework of General Relativity and search for cosmological solutions. For this purpose we assume a homogeneous, isotropic and uncharged Universe and a homogeneous scalar field. This model may be inserted in several contexts in which the scalar field might act as inflaton or quintessence, whereas the gauge field might play the role of radiation or dark matter, for instance. Particularly, we propose two such models: (i) in the first, the inflaton field decays to massive vector bosons that we regard as dark-matter; (ii) in the second, due to its coupling to radiation the scalar field is displaced from its ground state and drives an accelerated expansion of the Universe, playing the role of quintessence. We observe that the equations are quite simplified and easier to be solved if we assume a roughly monochromatic radiation spectrum.
description: 14 pages and 6 figures. To appear in JCAP
Study of Design Criteria of Induction Heating Furnaces.pdf
Creators: name: Marzouk, Razzak A.
Publisher: name: figshare
Year: 2020
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Study of design criteria of induction heating furnaces. A sequence of design steps is presented which starts from user requirement and ends at definition of furnace specifications including dimensions, operating frequency, power requirement and coil design. The criteria for maximum thermal efficiency is determined.
Análise da Maximização do Lucro e Minimização do Custo no Processo de Conversão do Café Convencional para o Orgânico: um estudo de caso
Creators: name: Oliveira, Renato Alves De
name: Caixeta Filho, Jose Vicente
name: Oliveira, Renato Alves De
name: Caixeta Filho, Jose Vicente
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Organic agriculture
subject: coffee
subject: conversion process
subject: linear programming.

description: One of the processes of the Organic Agriculture is the conversion, in which the agricultural activity is converted from conventional farming to the organic one. In the coffee case, the conversion from conventional to the organic system may bring some benefits, for example, the independence of external inputs, lower risk to health and it can provide more profits to the producer. Thus, this research aims to verify the economic viability of the organic coffee production of a rural property called Sítio Terra Verde, in Espírito Santo do Pinhal, São Paulo State, to convert from conventional to organic production. It was used linear programming to maximize profit and minimize costs of coffee production in two scenarios. The conversion planning has three stages: input replacement, conversion and organic production. The results showed that the adoption of organic technique provided higher profits for the producers than the conventional system at the end of the conversion period, when coffee prices increase. It was concluded that the adoption of organic management for the coffee farming can be economically viable, but it is extremely dependent on the price gap between conventional and organic systems.
Gravitational collapse and black hole evolution: do holographic black holes eventually "anti-evaporate"?
Creators: name: Casadio, Roberto
name: Germani, Cristiano
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the gravitational collapse of compact objects in the Brane-World. We begin by arguing that the regularity of the five-dimensional geodesics does not allow the energy-momentum tensor of matter on the brane to have (step-like) discontinuities, which are instead admitted in the four-dimensional General Relativistic case, and compact sources must therefore have an atmosphere. Under the simplifying assumption that matter is a spherically symmetric cloud of dust without dissipation, we can find the conditions for which the collapsing star generically ``evaporates'' and approaches the Hawking behavior as the (apparent) horizon is being formed. Subsequently, the apparent horizon evolves into the atmosphere and the back-reaction on the brane metric reduces the evaporation, which continues until the effective energy of the star vanishes. This occurs at a finite radius, and the star afterwards re-expands and ``anti-evaporates''. We clarify that the Israel junction conditions across the brane (holographically related to the matter trace anomaly) and the projection of the Weyl tensor on the brane (holographically interpreted as the quantum back-reaction on the brane metric) contribute to the total energy as, respectively, an ``anti-evaporation'' and an ``evaporation'' term. Concluding, we comment on the possible effects of dissipation and obtain a new stringent bound for the brane tension.
description: 18 pages in RevTeX4 style, 11 eps figures included. Discussion on the contribution of dissipation and clarifications added, version accepted for publication in Prog. Theor. Phys. Vol. 114, No. 1
Agropecuária Brasileira: desempenho regional e determinantes de produtividade
Creators: name: Felema, João
name: Raiher, Augusta Pelinski
name: Ferreira, Carlos Roberto
name: Felema, João
name: Raiher, Augusta Pelinski
name: Ferreira, Carlos Roberto
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Land productivity
subject: labor productivity
subject: agriculture.

description: This study aims to measure the labor and land net productivity in Brazil, major regions and federation units. It also identifies the factor that affects productiveness based on data provided by the Census of Agriculture 2006, from the Brazilian Institute of Geography and Statistics (IBGE). Thus, the productiveness may not be uniform in Brazilian agriculture due to the diversity in each region and differences related to the structure of productivity. The multiple linear regression models were used to identify factors that affect agriculture production and performance in Brazil. As a result, the best production index, which is related to labor and land productivity, is located in the South and Southeast Brazil. Some of the highest values are mainly concentrated only in some regions. Afterwards, an overall analysis of the figures indicated that the agricultural input and mechanization have presented a positive agricultural participation in most Brazilian states.
Ions in the Thermosphere of Exoplanets: Observable Constraints Revealed by Innovative Laboratory Experiments
Creators: name: Bourgalais, Jérémy
name: Carrasco, Nathalie
name: Changeat, Quentin
name: Venot, Olivia
name: Jovanović, Lora
name: Pernot, Pascal
name: Tennyson, Jonathan
name: Chubb, Katy L.
name: Yurchenko, Sergey N.
name: Tinetti, Giovanna
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: With the upcoming launch of space telescopes dedicated to the study of exoplanets, the \textit{Atmospheric Remote-Sensing Infrared Exoplanet Large-survey} (ARIEL) and the \textit{James Webb Space Telescope} (JWST), a new era is opening in the exoplanetary atmospheric explorations. However, especially in relatively cold planets around later-type stars, photochemical hazes and clouds may mask the composition of the lower part of the atmosphere, making it difficult to detect any chemical species in the troposphere or to understand whether there is a surface or not. This issue is particularly exacerbated if the goal is to study the habitability of said exoplanets and to search for biosignatures.\par This work combines innovative laboratory experiments, chemical modeling and simulated observations at ARIEL and JWST resolutions. We focus on the signatures of molecular ions that can be found in upper atmospheres above cloud decks. Our results suggest that H$_3^+$ along with H$_3$O$^+$ could be detected in the observational spectra of sub-Neptunes based on realistic mixing ratio assumption. This new parametric set may help to distinguish super-Earths with a thin atmosphere from H$_2$-dominated sub-Neptunes, to address the critical question whether a low-gravity planet around a low-mass active star is able to retain its volatile components. These ions may also constitute potential tracers to certain molecules of interest such as H$_2$O or O$_2$ to probe the habitability of exoplanets. Their detection will be an enthralling challenge for the future JWST and ARIEL telescopes.
Three essays on investment and information acquisition/disclosure decisions around equity offerings
Creators: name: Li, Yinghua
Publisher: name: University of British Columbia
Year: 2009

description: It is often believed that increased information flow can facilitate resource allocations and improve market efficiency in the capital market. Equity-issuing firms can play significant roles in the capital formation process, since they are a major provider of information and possess intimate knowledge about their business. Therefore it is important to understand factors that affect their disclosure incentives. In addition, regulators are concerned with formulating appropriate laws and policies to encourage more disclosure of credible information. Previous disclosure models often assume a pure-exchange economy when analyzing equityissuing firms' disclosure incentives. Such a setting might not be descriptive of equity offerings that involve production decisions. It is also commonly assumed that firm managers are exogenously endowed with private information. However, it usually takes efforts and resources to produce information. As stated in Christensen and Feltham (2003), "it is a manager's ability to acquire and process information efficiently that makes him an effective manager". This thesis extends the standard "new equity" disclosure model in- the literature by introducing production choices and endogenizing firms' information acquisition decisions. It studies the interaction between equity-issuing firms' productive activities- and information acquisition/disclosure decisions. It consists of four parts. Chapter 1 provides a general discussion of theoretical disclosure literature, and briefly introduces the main features and results of the subsequent chapters. Chapter 2 examines how equity-issuing firms' disclosure incentives affect their investment decisions arid their incentives to acquire pre-decision information. Chapter 3 examines the impact of different disclosure policies on firms' disclosure incentives and investment decisions. Chapter 4 introduces shareholder litigation, and analyzes the resulting disclosure equilibria and efficiencies of production decisions. This research adds to our understanding of the subtle interplay of equity-issuing firms' disclosure and productions decisions. It also provides arguments for caution with respect to setting disclosure policies. It is shown that it is difficult to determine the ex ante optimal policy in a production economy.
3142: An Artist's View
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Gunner Frank Bainbridge Booth in the RGA. He was a lithographic artist pre-war and did sketches in France some of Abbeville.
WCCF News (5/2020): What’s Happening at Wilkinson County Correctional Facility
Creators: name: Barnes, Roscoe
Publisher: name: figshare
Year: 2020
Subjects: subject: 180119 Law and Society
subject: FOS: Law
subject: 180199 Law not elsewhere classified
subject: 160202 Correctional Theory, Offender Treatment and Rehabilitation
subject: 160203 Courts and Sentencing
subject: 160504 Crime Policy
subject: FOS: Political science
subject: 160299 Criminology not elsewhere classified

description: This is a collection of news briefs I compiled for The Woodville Republican (Woodville, Miss.). The collection is set to appear as a quarter-page ad on Thursday, May 21, 2020. Wilkinson County Correctional Facility (WCCF), Woodville, where I serve as chaplain and Public Information Officer (PIO), is publishing its news in this format each quarter in the local newspaper.
Identifying variable gamma-ray sources through radio observations
Creators: name: Paredes, J. M.
name: Marti, J.
name: Torres, D. F.
name: Romero, G. E.
name: Combi, J. A.
name: Bosch-Ramon, V.
name: Garcia-Sanchez, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present preliminary results of a campaign undertaken with different radio interferometers to observe a sample of the most variable unidentified EGRET sources. We expect to detect which of the possible counterparts of the gamma-ray sources (any of the radio emitters in the field) varies in time with similar timescales as the gamma-ray variation. If the gamma-rays are produced in a jet-like source, as we have modelled theoretically, synchrotron emission is also expected at radio wavelengths. Such radio emission should appear variable in time and correlated with the gamma-ray variability.
description: Proceedings of the Conference "The Multiwavelength Approach to Unidentified Sources", to appear in the journal Astrophysics and Space Science
Beck 2020 Natural Black.pdf
Creators: name: Beck, Roland
Publisher: name: figshare
Year: 2020
Subjects: Uncategorized

description: The first perceivable property of aproduct is its color. Colors influence theperception of consumers with regardsto naturalness, flavor and sweetnessof a product and therefore play avital role in the purchasing decision.Whether black burgers, fruit gums orice cream - black-colored food are realeye-catchers at every meal. They arenot only taking over lnstagram, but arealso hugely popular in supermarkets.
Galaxy Occupation Statistics of Dark Matter Haloes: Observational Results
Creators: name: Yang, Xiaohu
name: Mo, H. J.
name: Jing, Y. P.
name: Bosch, Frank C. van den
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the occupation statistics of galaxies in dark matter haloes using galaxy groups identified from the 2-degree Field Galaxy Redshift Survey with the halo-based group finder of Yang et al. The occupation distribution is considered separately for early and late type galaxies, as well as in terms of central and satellite galaxies. The mean luminosity of the central galaxies scales with halo mass approximately as $L_c\propto M^{2/3}$ for haloes with masses $M<10^{13}h^{-1}\msun$, and as $L_c\propto M^{1/4}$ for more massive haloes. The characteristic mass of $10^{13} h^{-1} \Msun$ is consistent with the mass scale where galaxy formation models suggest a transition from efficient to inefficient cooling. Another characteristic halo mass scale, $M\sim 10^{11} h^{-1}\msun$, which cannot be probed directly by our groups, is inferred from the conditional luminosity function (CLF) that matches the observed galaxy luminosity function and clustering. For a halo of given mass, the distribution of $L_c$ is rather narrow. The satellite galaxies are found to follow a Poissonian number distribution. The central galaxies in low-mass haloes are mostly late type galaxies, while those in massive haloes are almost all early types. We also measure the CLF of galaxies in haloes of given mass. Over the mass range that can be reliably probed with the present data ($13.3 \lta {\rm log}[M/(h^{-1}\Msun)] \lta 14.7$), the CLF is reasonably well fit by a Schechter function. Contrary to recent claims based on semi-analytical models of galaxy formation, the presence of central galaxies does not show up as a strong peak at the bright end of the CLF. (Abridged)
description: 17 pages, 11 figures, revised version. Two figures added. A few small changes. Main conclusions remain unchanged
Superfield Theories in Tensorial Superspaces and the Dynamics of Higher Spin Fields
Creators: name: Bandos, Igor
name: Pasti, Paolo
name: Sorokin, Dmitri
name: Tonin, Mario
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present the superfield generalization of free higher spin equations in tensorial superspaces and analyze tensorial supergravities with GL(n) and SL(n) holonomy as a possible framework for the construction of a non-linear higher spin field theory. Surprisingly enough, we find that the most general solution of the supergravity constraints is given by a class of superconformally flat and OSp(1|n)-related geometries. Because of the conformal symmetry of the supergravity constraints and of the higher spin field equations such geometries turn out to be trivial in the sense that they cannot generate a `minimal' coupling of higher spin fields to their potentials even in curved backgrounds with a non-zero cosmological constant. This suggests that the construction of interacting higher spin theories in this framework might require an extension of the tensorial superspace with additional coordinates such as twistor-like spinor variables which are used to construct the OSp(1|2n) invariant (`preonic') superparticle action in tensorial superspace.
description: LaTeX, 30 pages, no figures. V2. Discussion on conventional constraints extended, typos corrected, JHEP style, to appear in JHEP
3096: Millward Brothers
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Lawrence Millward (b. 1877) joined the 4th Battalion Durham Light Infantry in December 1915 in Sunderland - Private 31923. No overseas service. He became ill in August 1916. The photo is from the Royal National Chest Hospital in Ventnor, Isle of Wight. Lawrence is thought to be top left in the photo) He died there on 3rd June 1917. He's buried at Tideswell, Derbyshire with a CWGC headstone along with 5 similar burials. Frederick Millward (b. 1878), Lawrence's brother, became Private 22682 in the Green Howards, Yorkshire Regiment in Middlesbrough. In March 1918 he fractured his ankle and was sent home. In Jan 1919 he was promoted to Lance Sergeant in the Yorks and Lancs Regiment. He was demobbed on 9th April 1919. Lawrence is the contributor's Great Uncle. Frederick is her Grandfather.
A Ly-alpha nebula at z~3.3
Creators: name: Hibon, Pascale
name: Tang, Francis
name: Thomas, Romain
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. Searching for high-redshift galaxies is a field of intense activity in modern observational cosmology that will continue to grow with future ground-based and sky observatories. Over the last few years, a lot has been learned about the high-z Universe. Aims. Despite extensive Ly-alpha Blobs (LAB) surveys from low to high redshifts, giant LABs over 100 kpc have been found mostly at z~2-4. This redshift range is coincident with the transition epoch of galactic gas-circulation processes from inflows to outflows at z~2.5-3. This suggests that the formation of giant LABs may be related to a combination of gas inflows and outflows. Their extreme youth makes them interesting objects in the study of galaxy formation as they provide insight into some of the youngest known highly star forming galaxies, with only modest time investments using ground-based telescopes. Methods. Systematic narrow-band Ly-alpha nebula surveys are ongoing, but they are limited in their covered redshift range and their comoving volume. This poses a significant problem when searching for such rare sources. To address this problem, we developed a systematic searching tool, ATACAMA (A Tool for seArChing for lArge LyMan Alpha nebulae) designed to find large Ly-alpha nebulae at any redshift within deep multi-wavelength broad-band imaging. Results. We identified a Ly-alpha nebula candidate at zphot~3.3 covering an isophotal area of 29.4sq.arcsec. Its morphology shows a bright core and a faint core which coincides with the morphology of previously known Ly-alpha blobs. A first estimation of the Ly-alpha equivalent width and line flux agree with the values from the study led by several groups.
description: Accepted to A&A, 8 pages, 4 figures. arXiv admin note: text overlap with arXiv:1708.00447 by other authors
Learning CNN filters from user-drawn image markers for coconut-tree image classification
Creators: name: de Souza, Italos Estilon
name: Falcão, Alexandre Xavier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Identifying species of trees in aerial images is essential for land-use classification, plantation monitoring, and impact assessment of natural disasters. The manual identification of trees in aerial images is tedious, costly, and error-prone, so automatic classification methods are necessary. Convolutional Neural Network (CNN) models have well succeeded in image classification applications from different domains. However, CNN models usually require intensive manual annotation to create large training sets. One may conceptually divide a CNN into convolutional layers for feature extraction and fully connected layers for feature space reduction and classification. We present a method that needs a minimal set of user-selected images to train the CNN's feature extractor, reducing the number of required images to train the fully connected layers. The method learns the filters of each convolutional layer from user-drawn markers in image regions that discriminate classes, allowing better user control and understanding of the training process. It does not rely on optimization based on backpropagation, and we demonstrate its advantages on the binary classification of coconut-tree aerial images against one of the most popular CNN models.
ASOCIATIVIDAD PARA LA COMPETITIVIDAD EN LA AGROINDUSTRIA DE OAXACA, MÉXICO
Creators: name: Santiago Ibáñez, Daniela Patricia
name: Cruz Cabrera, Blasa Celerina
name: Acevedo Martinez, Jorge Antonio
name: Ruíz Martínez, Alfredo
name: Regino Maldonado, Juan
name: Santiago Ibáñez, Daniela Patricia
name: Cruz Cabrera, Blasa Celerina
name: Acevedo Martinez, Jorge Antonio
name: Ruíz Martínez, Alfredo
name: Regino Maldonado, Juan
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Business associativity
subject: Agro Food
subject: Food Security
subject: Competitiveness.

description: Faced with the process of globalization and the challenges proposed is necessary to promote processes that generate inter associability (organizations - institutions), where it generates an organized effort and the adoption of new organizational models that encourage flexibility and operational decentralization, favoring units building strategic business performance, and where class actions are prioritized on individuals through the creation of networks that promote business promotion (Associability). Are known Latin successful experiences partnerships as a strategy to achieve business competitiveness has become the strategy used by companies from various Latin American countries, such as Peru, Venezuela, Colombia, Argentina, becoming a hallmark for growth, market share, profitability and productivity and promoting the link between the production system and the participation and interaction between the various actors in the production. Framed in that context, this paper presents research product associativity and Competitiveness in Food Technology in Oaxaca, Mexico, whose purpose is to design a model for Food Technology, for which necessary documentary descriptive analysis to characterize the elements associativity condition in the micro, small and medium agro food sector, and its use as a strategy to be competitive MSMEs and to make the decisive contribution to food security. Since food agribusiness is driving the development and welfare of a significant segment of the state population, involving the transformation of raw materials derived from agriculture, and that makes it a rewarding industry and employment generator. Document is presented in the tables on the agro-food industry, the methodology used for the structure of the model, the theories used and the conclusions of the study.
Absolute continuity of symmetric Markov processes
Creators: name: Chen, Z. -Q.
name: Fitzsimmons, P. J.
name: Takeda, M.
name: Ying, J.
name: Zhang, T. -S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 31C25, 60J45 (Primary) 60J57 (Secondary)

description: We study Girsanov's theorem in the context of symmetric Markov processes, extending earlier work of Fukushima-Takeda and Fitzsimmons on Girsanov transformations of ``gradient type.'' We investigate the most general Girsanov transformation leading to another symmetric Markov process. This investigation requires an extension of the forward-backward martingale method of Lyons-Zheng, to cover the case of processes with jumps.
description: Published by the Institute of Mathematical Statistics (http://www.imstat.org) in the Annals of Probability (http://www.imstat.org/aop/) at http://dx.doi.org/10.1214/009117904000000432
title: Supplementary Appendix, Population & Societies, 595, December 2021 (Will a third of East Asian women remain childless?)
Creators: name: Sobotka, Tomas
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: subject: fertility
subject: Fertility, Human
subject: Childlessness
subject: East Asia
subject: Marriage
subject: delayed childbearing

description: This supplementary Appendix provides an overview of data, estimates and data sources used for the analyses and graphs featured in the article. (Tomáš Sobotka, 2021. World’s Highest Childlessness Levels in East Asia, Population & Societies, 595 (December 2021) )
New membership determination and proper motions of NGC 1817. Parametric and non-parametric approach
Creators: name: Balaguer-Nunez, L.
name: Jordi, C.
name: Galadi-Enriquez, D.
name: Zhao, J. L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have calculated proper motions and re-evaluated the membership probabilities of 810 stars in the area of two NGC objects, NGC 1817 and NGC 1807. We have obtained absolute proper motions from 25 plates in the reference system of the Tycho-2 Catalogue. The plates have a maximum epoch difference of 81 years; and they were taken with the double astrograph at Zo-Se station of Shanghai Observatory, which has an aperture of 40 cm and a plate scale of 30 arcsec/mm. The average proper motion precision is 1.55 mas/yr. These proper motions are used to determine the membership probabilities of stars in the region, based on there being only one very extended physical cluster: NGC 1817. With that aim, we have applied and compared parametric and non-parametric approaches to cluster/field segregation. We have obtained a list of 169 probable member stars.
description: 11 pages, 8 figures, A&A in press
Mitochondria and microdomains in vascular smooth muscle cell Ca²⁺ signalling
Creators: name: Poburko, Damon Todd
Publisher: name: University of British Columbia
Year: 2009

description: Contraction of vascular smooth muscle (VSM) is regulated by fluctuations in the intracellular concentration of free ionic calcium ([Ca²⁺][sub i]). The spatio-temporal regulation of [Ca²⁺][sub i] relies on the sub-cellular architecture of the smooth muscle cell and the juxtaposition of opposing plasmalemma (PM), sarcoplasmic reticulum (SR) and mitochondria. This thesis addresses two related aspects of Ca²⁺-signaling in VSM: 1) basal Ca²⁺-entry across the PM and 2) mitochondrial Ca²⁺-uptake during agonist mediated stimulation in cultured rat aorta smooth muscle cells. Basal Ca²⁺-entry into resting cells, measured with radio-labeled ⁴⁵Ca²⁺, was blocked (~80%) by organic inhibitors of L-type voltage-gated Ca²⁺-channels (nifedipine), store-/receptoroperated Ca²⁺-channels (SKF-96365) and inositol-1,4,5-trisphosphate receptors (IP₃R) (2-APB). At increasing concentrations, gadolium (Gd³⁺) biphasically inhibited Ca²⁺-uptake. The maximal effect of the first phase (100μM Gd³⁺) was equally as effective as combined treatment with 2-APB and SKF-96365. At 0.2-10mM, Gd³⁺ inhibited Ca²⁺ influx to a greater extent than the organic inhibitors. We concluded that basal Ca²⁺ entry primarily occurred via basal activity of excitable channels, and PCR analysis suggests this influx to involve L-type voltage-gated Ca²⁺-channels, and TRPC1, TRPC4 and TRPC6. Next, we used Ca²⁺-sensitive proteins (aequorins and pericams) and dyes (fura-2) to measure parallel [Ca²⁺] changes in the mitochondrial matrix, subplasmalemmal cytosol and bulk cytosol. Replacing extracellular Na⁺ with n-methyl-d-glucamine (NMDG) caused Ca²⁺-entry by reversal of the Na⁺/Ca²⁺-exchanger (NCX), which was selectively blocked by KB-R7943. NCX-reversal increased mitochondrial and subplasmalemmal but not bulk cytosolic [Ca²⁺] revealing a local interaction of the SR, NCX and mitochondria. Furthermore, NCX-reversal and mitochondrial Ca²⁺-uptake appear to occur during the [Ca²⁺][sub i] plateau phase of the response to purinergic stimulation (ATP). However, this mitochondrial Ca²⁺-uptake does not increase [Ca²⁺][sub MT] because of a compensatory stimulation of mitochondrial Ca²⁺-extrusion (blocked by CGP-37157). Finally, we dissected the [Ca²⁺][sub MT] response to SR Ca²⁺-release in response to agonist-mediated stimulation. ATP and [ARG⁸]-vasopressin transiently increased [Ca²⁺][sub MT] by activating both IP₃R and ryanodine receptors (RyR) (selectively inhibited by 2-APB and procaine). Image analysis of fluorescently labeled mitochondria, IP₃R and RyR corroborated functional evidence that IP₃R and RyR release Ca²⁺ from separate sub-compartments of the SR and that physiological [Ca²⁺][sub MT] elevations rely on IP₃R-RyR cross-talk.
Weighted Bergman kernels and virtual Bergman kernels
Creators: name: Roos, Guy
Publisher: name: arXiv
Year: 2004
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32A25; 32M15

description: We introduce the notion of "virtual Bergman kernel" and apply it to the computation of the Bergman kernel of "domains inflated by Hermitian balls", in particular when the base domain is a bounded symmetric domain.
description: 12 pages. One-hour lecture for graduate students, SCV 2004, August 2004, Beijing, P.R. China. V2: typo corrected
CARACTERIZACIÓN DEL CONSUMIDOR DE PRODUCTOS ORGÁNICOS EN LA CIUDAD DE TOLUCA, MÉX.
Creators: name: Díaz Víquez, Antonio
name: Pérez Hernández, Amalia
name: Hernández Ávila, Jesús
name: Díaz Víquez, Antonio
name: Pérez Hernández, Amalia
name: Hernández Ávila, Jesús
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Organic commodity
subject: consumer
subject: market niche
subject: typing
subject: purchasing power.

description: At the organic market Mexico is a major producer, but among the population the consumption represents only the 15%, and only 5% of this products are marketed as organic product (OP) while the remaining 10% of products are marketed as conventional. The sale point is another reason offered for the low and rare consumption, such as the low investment by producers for the dissemination and identification of the organic concept and the benefits that this products provides. Since the OP marketing plans has shown an endogenous development and the exportation demand of this products has grown, this study aims to determine the characteristics of the organic product consumers at Toluca City, Mex., by the analysis of surveys results. The research was carried out in three stages: 1) Documentary research, 2) Implementation survey, 3) Analysis of the results. From January to March 2011, 386 surveys were applied to typified the ultimate consumer of OP, which brought the following characteristics: consumer age between 24 to 35 years, the decision to buy depends on the females with a higher educational, employees and a socioeconomic level C+, the consumption trend shows 44%, the variables that affect consumption are: the product is really expensive, the lack of benefits and that is hard to find it in the market, whereas they are preferred because they are considered healthy and fresh products, the recognition is based on the packaging and the certification seal, the consumers spends between $ 200.00-$ 500.00.