Moving Boundaries
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Crecimiento de grano tridimensional con partículas móviles usando método de Monte Carlo
ABSTRACT In this paper we present a simulation model of grain growth with moving particles in three dimensions using the Monte Carlo method. The effect of concentration and particle size on grain size was studied. In general, it was possible to observe the migration of the particles towards the grain boundaries and the braking that they produce on the moveme
Matéria (Rio J.). Publicado em: 19/07/2018
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2. Da indenizabilidade dos terrenos marginais de rios federais nas desapropriações agrárias: estudos de caso no estado de Goiás / Inindenizabilidade of marginal land of federal rivers in the agricultural expropriations: case in the State de Goias
The Item III of art. 20 of the Federal Constitution of 1988 prescribes that belong to the Union lakes, rivers and streams in any of its land area, or bathing more than one state, that serve as boundaries with other countries, or extending or come from a foreign country, referring also to marginal lands. However, INCRA, in fulfillment of its institutional rol
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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3. O Estado, a empresa e a defesa da concorrência: os limites de cada um dos atores e a justificativa dessa política, estudados pela análise dos atos de concentração
The work presented herein has its purpose in the study of Antitrust Law from a perspective of the private law as to an attempt to understand the restrictions imposed by CADE to corporations when reviewing mergers and acquisitions that would allegedly likely to reduce competition. In this sense, the paper will examine the market as an institution established
Publicado em: 2008
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4. Compensação de movimento utilizando módulos multi-escala e forma variável em um CODEC de vídeo híbrido
In the H.264/AVC video coding standard, motion compensation can be performed by partitioning macroblocks into square or rectangular sub-macroblocks in a quadtree decomposition. This work studies a motion compensation method using wedges, i.e. partitioning macroblocks or sub-macroblocks into two regions by an arbitrary line segment. This technique allows the
Publicado em: 2007
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5. The Casimir effect: some aspects
We start this paper with a historical survey of the Casimir effect, showing that its origin is related to experiments on colloidal chemistry. We present two methods of computing Casimir forces, namely: the global method introduced by Casimir, based on the idea of zero-point energy of the quantum electromagnetic field, and a local one, which requires the comp
Brazilian Journal of Physics. Publicado em: 2006-12
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6. Método da fronteira imersa aplicado à modelagem matemática e simulação numérica de escoamentos turbulentos sobre geometrias móveis e deformáveis / Immersed boundary method applied to mathematical modeling and numerical simulation of turbulent flow over moving and deformable boundaries
A modelagem matemática de escoamentos turbulentos sobre geometrias complexas móveis possui uma extensa área de aplicações práticas e por isso ocupa lugar de destaque nas pesquisas recentes em engenharia. Uma linha proposta para o tratamento numérico deste tipo de problemas são os métodos de fronteira imersa. Esta metodologia, ainda em desenvolviment
Publicado em: 2006
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7. Fluxos ideais e incompressiveis bidimensionais em dominios não-cilindricos / Two-dimensional incompressible ideal flow in a noncylindrical material domain
In this work we shall prove the existence of weak solutions of the incompressible Euler equations in two-dimensional domains with smoothly moving boundaries. The main objective is to rebuild the work developed by Cheng He and Ling Hsiao (2000) with appropriate conditions for material domains. To show the existence of a weak solution for the Euler equations i
Publicado em: 2005
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8. Entre especificidades e diferenças
The aim of this research was to produce differente ways to look towards a set of (representation practices) practices of representation. That produces particularities and differences for a rural school. We searched for a diversity of specific senses and when it was moved up it aimed to present multiple possibilities of representation that go around the perim
Publicado em: 2004
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9. Modelo termodinamico para o aquecimento não-linear, a laser, e suas aplicações ao processamento de materiais
The subject of the computer modeling of the laser processing of materials continues to be highly topical in Materials Science. Basic to such an achievement was to have an well posed proposition to determine the time evolution of the temperature anywhere in the laser heated sample. Though models of such a kind abound in the literature, they are either rather
Publicado em: 1994
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10. Reciprocal interactions between occlusion and motion computations
The “aperture problem” refers to the inherent ambiguity of the motion generated by an untextured contour moving within an aperture. The limited spatial extent of the receptive fields of neurons in cortical areas like V1 and MT render them susceptible to this problem. Most psychophysical experiments have probed how the visual system overcomes the aperture
The National Academy of Sciences of the USA.
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11. Alveolar duct expansion greatly enhances aerosol deposition: a three-dimensional computational fluid dynamics study
Obtaining in vivo data of particle transport in the human lung is often difficult, if not impossible. Computational fluid dynamics (CFD) can provide detailed information on aerosol transport in realistic airway geometries. This paper provides a review of the key CFD studies of aerosol transport in the acinar region of the human lung. It also describes the fi
The Royal Society.
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12. Motility of Escherichia coli cells in clusters formed by chemotactic aggregation
Cells of Escherichia coli under conditions of certain cellular stresses excrete attractants. Cells of chemotactic strains respond to these excreted signaling molecules by moving up their local concentration gradients and forming different types of stable multicellular structures. Multicellular clusters are the simplest among these structures. Fluorescence mi
National Academy of Sciences.