Algebraic Modelling
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Algebraic modelling of spatiotemporal objects: understanding change in the Brazilian Amazon / Modelagem algébrica de dados espaço-temporais: entendendo as mudanças na Amazônia
Essa tese propõe uma álgebra, a Álgebra GeoEspacial, para descrever a evolução de objetos espaço-temporais. Ela é composta de um conjunto de operações, axiomas e regras definidas para cada aplicação. Especificamente, nós trabalhamos com objetos evolutivos, que são objetos que evoluem alterando suas bordas e seus atributos. Eles ocorrem, por exem
Publicado em: 2009
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2. Algebraic modelling of spatiotemporal objects: understanding change in the Brazilian Amazon / Modelagem algébrica de dados espaço-temporais: entendendo as mudanças na Amazônia
This thesis proposes an algebra to describe how spatiotemporal objects evolve, named geospatial algebra, and a model to apply it. This algebra is composed of a set of operations, axioms and rules defined by the application. Specifically, we handle evolving objects, which are objects that evolve by changing their boundaries and attributes. These objects appea
Publicado em: 2009
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3. Multi-SincronizaÃÃo em menssage sequence charts
Message Sequence Charts (MSC) is a visual trace language, extensively used in academy and industry, to describe the communication behavior of system components and their environment. The MSC syntax and semantics are now a standard defined by the International Telecommunication Union (ITU). The motivation for this work has originated from an eort to model sce
Publicado em: 2008
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4. Uma contribuiÃÃo ao estudo da sedimentaÃÃo gravitacional em batelada
Thickeners are equipments that uses the gravitational force as separating agent of suspended solid particle in liquid chains of industrial processes. The frequent use of the settlers in chemical industries is the reason of the interest on the development of studies on the subject. The batch sedimentation is the starting point for the project of continuous in
Publicado em: 2007
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5. The effects of tariffs on the whole milk powder trade between Brazil and Argentina: a game theoretic analysis / Efeitos de tarifas no comércio de leite em pó entre Brasil e Argentina: uma análise com teoria dos jogos
Desde a implantação do Mercado Comum do Sul (MERCOSUL), o calendário de negociações entre países membros tem sido intenso para tratar de conflitos comerciais. Dentre os produtos que mais geraram conflitos nos últimos anos, principalmente entre Brasil e Argentina, destaca-se o leite em pó. Dentro desse contexto, o presente estudo procurou analisar os
Publicado em: 2006
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6. Modelagem computacional de dados e controle inteligente no espaço de estado / State space computational data modelling and intelligent control
This study presents contributions for state space multivariable computational data modelling with discrete time invariant as well as with time varying linear systems. A proposal for Deterministic-Estocastica Modelling of noisy data, MOESP_AOKI Algorithm, is made. We present proposals forsolving the Discrete-Time Algebraic Riccati Equation as well as the asso
Publicado em: 2005
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7. Aplicação do método dos elementos de contorno à análise de pavimentos de edifícios / Application of the boundary element method to slab floor analysis
This work deals with a formulation of the boundary element method applied to slab floor analysis with special emphasis concrete flat slabs exhibiting physical non-linearities. In this formulation normal and shear components of the stress tensor are taken into account to capture more accurately the ultimate strength of the structural element. The boundary ele
Publicado em: 2001
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8. An experimental/numerical study of the turbulent boundary layer development along a surface with a sudden change in roughness
A theory for the description of turbulent boundary layer flows over surfaces with a sudden change in roughness is considered. The theory resorts to the concept of displacement in origin to specify a wall function boundary condition for a kappa-epsilon model. An approximate algebraic expression for the displacement in origin is obtained from the experimental
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2000
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9. Contribuição ao estudo do controle automatico de geração
In this work, the basic concepts of the Automatic Control Generation of a Power System are presented, and the classical modelling methods are discussed. A new modelling approach was developed, where the complete representation of the interconnected system is considered. Alternating solutions of the differential equations of the machines and of the algebraic
Publicado em: 1983