Computational And Physical Modeling
Mostrando 1-12 de 30 artigos, teses e dissertações.
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1. REDUÇÃO DE VARIÁVEIS DE ENTRADA DE REDES NEURAIS ARTIFICIAIS A PARTIR DE DADOS DE ANÁLISE DE COMPONENTES PRINCIPAIS NA MODELAGEM DE OXIGÊNIO DISSOLVIDO
The objective of this work is to demonstrate the efficient utilization of the Principal Components Analysis (PCA) as a method to pre-process the original multivariate data, that is rewrite in a new matrix with principal components sorted by it's accumulated variance. The Artificial Neural Network (ANN) with backpropagation algorithm is trained, using this pr
Quím. Nova. Publicado em: 2016-04
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2. 2D upper bound analysis of ECAE through 2θ-dies for a range of channel angles
Equal Channel Angular Extrusion (ECAE), sometimes referred to as Equal Channel Angular Pressing (ECAP), is a Severe Plastic Deformation technique. However the energy-power parameters of ECAE have not been fully addressed in previous known publications. The present article is focused on the punching pressure, accumulated plastic strain, and dead metal zone ge
Mat. Res.. Publicado em: 26/10/2014
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3. Desenvolvimento de um simulador para espectrometria por fluorescência de raios X usando computação distribuída / Development of a X-ray fluorescence spectrometry simulator using distributed computing
Radiation Physics is a branch of Physics that is present in various studying areas and relates to the concept of spectrometry. Among the numerous existing spectrometry techniques, there is the X-ray fluorescence spectrometry. It also has a range of variations which can emphasize a particular subset of techniques. The production of X-ray fluorescence enables
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
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4. Modelagem de equilíbrio líquido-líquido, líquido-vapor e líquido-líquido-vapor para sistemas binários, ternários, quaternários e pseudo-quaternários, envolvendo a produção de biodiesel / Modeling of liquid-liquid, liquid-vapor and liquid-liquid-vapor equilibria for binary, ternary, quarternay and pseudo-quaternary systems involving biodiesel production
The worldwide energy demand increases every year. This demand will reach levels that cannot be supplied by current conventional fossil fuel resources. In this context, biofuels arise as a growing primary source of energy, raising research opportunities and encouraging technology development. An important technical issue related to biofuels development is the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/01/2012
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5. Desenvolvimento de um algoritmo para identificação e caracterização de cavidades em regiões específicas de estruturas tridimensionais de proteínas / Development of an algorithm to identify and characterize cavities in specific regions of three-dimensional structures of proteins.
The identification and characterization of geometrical and physical-chemical properties in protein vacant spaces aggregates important information for steering rational drug designing and functional characterization of binding and catalytic sites. Therefore, several softwares have been develop during the past two decades in order to perform such characterizat
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/05/2011
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6. Um modelo de simulação de sistemas aplicado à programação da produção de um frigorífico de peixe
The necessity for making production processes more efficient and effective is the desire of any organization. For this to become reality and does not generate high investment is necessary to use techniques that assist in improvement of the production process along with a appropriate schedule of productive resources. Among these techniques, the Simulation ass
Publicado em: 2011
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7. Modelagem geológica por simplóides de Bézier / Geological modeling using Bézier simploids
The exploration and monitoring of a hydrocarbon reservoir demand a very detailed knowledge about the geological structures of the target area. The mathematical and computation representation of this knowledge is a geophysical model. In this thesis, we describe a general system for geophysical modeling based on polynomial finite elements of arbitrary degree.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/12/2010
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8. Simulação hidrológica de rios com grandes planícies de inundação
Besides understanding the current hydrologic behavior of a river and floodplain drainage system, it is important to be able to predict its future conditions in light of possible impacts due to anthropogenic activities and climate variability. Mathematical modeling is the ideal tool for this purpose. For large scale hydrologic systems, if the objective is to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
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9. IDENTIFICATION OF THE BEHAVIOR OF TEMPERATURE MAIN RECTIFIER OF A DIESEL-ELECTRIC LOCOMOTIVE / IDENTIFICAÇÃO DO COMPORTAMENTO DA TEMPERATURA DO RETIFICADOR PRINCIPAL DE UMA LOCOMOTIVA DIESEL-ELÉTRICA
In this dissertation, we explore the application of the Theory of System Identification to develop a mathematical model that represents the behavior of the electrical current rectifier used to power the traction motors of a locomotive diesel-electric, based on mathematical manipulation of its temperature data. It was developed an ARX model and, using the aid
Publicado em: 2010
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10. Study of physical deacidification of the vegetable oils using model systems / Estudo da desacidificação por via fisica de oleos vegetais utilizando sistemas-modelos
The steam deacidification step must be designed in order to take into account the high difference in the volatility of undesirable compounds and the neutral oil under high temperatures and vacuum, without causing damage to nutraceutical compounds, excessive production of trans fatty acids and neutral oil loss. To improve the process conditions of this import
Publicado em: 2009
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11. Um roteiro para a criação de programa computacional dedicado à geração de pré-projeto arquitetônico de habitações sociais: realimentação de modelo a partir de avaliações pós-ocupação / A roadmap for the creation of dedicated software the generation of pre-architectural project of social housing: feedback model from Post-Occupancy Evaluations
The possibility of living in environments that have been sized on the basis of anthropometric studies and post-occupancy evaluations (POEs) of the functionality of buildings is the consequence of architectural design processes yet to be consolidated. This technology has enabled greater control over all stages in the construction of buildings, the pre-design
Publicado em: 2009
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12. Análise de sensibilidade topológica em modelos constitutivos multi-escalas / Topological Sensitivity Analysis in Constitutive Multi-Scale Models
The purpose of the present work is to carry out a topological sensitivity analysis in constitutive multi-scale models. By making use of the Hill-Mandel Principle of Macro-Homogeneity and the concept of volume average, a variational formulation was established to derive a clearly structured axiomatic framework for constitutive multi-scale models of the presen
Publicado em: 2009