Spatial Equilibrium
Mostrando 1-12 de 60 artigos, teses e dissertações.
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1. Metals and dissolved organic carbon (DOC) of surface waters in two adjacent watersheds in the eastern Amazon
Resumo A intensificação do uso da terra na região da “Zona Bragantina”, uma área da Amazônia Oriental brasileira, acelerou as mudanças de paisagem da floresta primária para uma mistura de diferentes usos da terra: floresta (vegetação ripária), floresta secundária, pastagem, terra agrícola anual, terra cultivada perene, solo descoberto e veget
Rev. Ambient. Água. Publicado em: 28/11/2019
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2. Mercado de carne de frango brasileiro no contexto dos novos acordos regionais de comércio: Transpacífico e Transatlântico
Resumo O estudo tem por objetivo examinar os possíveis impactos da implementação dos acordos Transpacífico e Transatlântico sobre o mercado de carne de frango brasileiro. A metodologia aplicada deriva de um Modelo de Equilíbrio Espacial na forma de um Problema de Complementaridade Mista (PCM), baseando na simulação de cinco cenários alternativos, c
Rev. Econ. Sociol. Rural. Publicado em: 28/11/2019
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3. Modelagem do uso da Terra e Efeitos de Mudanças na Produtividade Agrícola entre 2008 e 2015
Resumo O artigo apresenta os resultados dos efeitos sistêmicos da mudança no padrão da produtividade agrícola entre 2008 e 2015. Para isso foi utilizado um modelo de equilíbrio geral computável (EGC) com especificação detalhada do uso da terra. Tal análise representa avanços no sentido de contribuir tanto para a modelagem econômica com uso da terr
Estud. Econ.. Publicado em: 2019-03
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4. Boundary Layer Effects in a Finite Linearly Elastic Peridynamic Bar
Abstract The peridynamic theory is an extension of the classical continuum mechanics theory. The peridynamic governing equations involve integrals of interaction forces between near particles separated by finite distances. These forces depend upon the relative displacements between material points within a body. On the other hand, the classical governing equ
Lat. Am. j. solids struct.. Publicado em: 22/10/2018
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5. Spatial Variability of Soil Fauna Under Different Land Use and Managements
ABSTRACT Geostatistics allows the evaluation of the distribution pattern of data with high spatial variability in agricultural systems. This study aimed to evaluate the spatial variability of biological diversity indices of soil fauna under different land (agriculture and forest). Samples were collected in seven areas (millet, soybean, corn, eucalyptus, past
Rev. Bras. Ciênc. Solo. Publicado em: 28/05/2018
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6. APARATO ELETROQUÍMICO PARA SISTEMA DE AQUISIÇÃO DE DADOS MULTICANAL COM RESOLUÇÃO ESPAÇO-TEMPORAL
Spatiotemporal pattern formation in reaction-transport systems takes place spontaneously when the system is kept far from thermodynamic equilibrium. Targets, reaction fronts, waves, spirals, spots and stripes are some typical examples of selforganized structuring. In electrochemical systems, monitoring spatiotemporal patterns of potential in the solid/liquid
Quím. Nova. Publicado em: 2015-01
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7. Stochastic Newton-like methods for computing equilibria in general equilibrium models
Calculating an equilibrium point in general equilibrium models in many cases reduces to solving a nonlinear system of equations. Taking model parameter values as random variables with a known distribution increases the level of information provided by the model but makes computation of equilibrium points even more challenging. We propose a computationally ef
Computational & Applied Mathematics. Publicado em: 2011
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8. An application of the spatial equilibrium model to soybean production in tocantins and neighboring states in Brazil
Na cadeia de produção da soja no Brasil, parte substancial da estrutura correspondente dos custos é resultado dos custos logísticos. Dada a localização das áreas produtivas, distante do oceano, a otimização dos custos de transporte é essencial para garantir a competitividade. Usando programação não-linear, este estudo propõe um modelo de equil�
Pesquisa Operacional. Publicado em: 2010-08
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9. Static and free vibration studies on a pulley-belt system with ground stiffness
The static and free vibration behavior of a pulley-belt system with ground stiffness is investigated using a nonlinear model based on Hamilton's principle. In the equilibriumanalysis a computational method based on boundary value problem solvers is adapted to obtain the numerical solution, whereas for free vibration analysis spatial discretization is done us
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-03
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10. MÚLTIPLAS ESCALAS EM INTERAÇÕES PRESA-PREDADOR
The main purpose of this dissertation was to analyze the occurrence of two time scales in predator-prey systems. Initially, we proposed two discrete models without spatial structure. The first model considers fast vital dynamics for the prey and slow dynamics for the predator. The second one proposes the reproduction of the predator in a faster time scale th
Publicado em: 2010
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11. Energy policy and regional inequalities in the Brazilian economy / Política energética e desigualdades regionais na economia brasileira
The objective of this dissertation is to evaluate the long-run regional impacts of tariff policy of the Brazilian electric power sector. The structural reforms carried on this sector determined the emergence of two different spatial distribution trends of the electric power tariffs among the Brazilian states: one of convergence and another of spatial diverge
Publicado em: 2010
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12. Osmotic stress on concentrated colloidal suspensions: a path towards equilibrium?
We discuss in this study the advantages and limitations of the osmotic stress method that enables to set the osmotic pressure to a given system. By investigating aqueous suspension of monodisperse silica nanoparticles of radius 78 at an ionic strength of 10-2 mol/L, we show that the method is very accurate to probe the phase behavior of colloidal suspensions
Brazilian Journal of Physics. Publicado em: 2009-04