Simulation Statistic
Mostrando 1-12 de 33 artigos, teses e dissertações.
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1. EMPREGO DE QUÍMICA COMPUTACIONAL NA VERIFICAÇÃO E VALIDAÇÃO DA PRESSÃO DE DETONAÇÃO DE EXPLOSIVO PLÁSTICO-PBX
Prediction of chemical explosions parameters is an important step for blast tests for civil and military applications. Applying computational chemistry and experimental results, this paper presents the decay rate of pressure in air from the epicenter of 2.70 kg of PBX-Plastic bonded explosive detonation to the distance of 2.0 meters. Pressure in the epicente
Quím. Nova. Publicado em: 2018-03
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2. A single loop reliability-based design optimization using EPM and MPP-based PSO
A reliability-based design optimization (RBDO) incorporates a probabilistic analysis with an optimization technique to find a best design within a reliable design space. However, the computational cost of an RBDO task is often expensive compared to a deterministic optimization, which is mainly due to the reliability analysis performed inside the optimization
Lat. Am. j. solids struct.. Publicado em: 2014-10
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3. PRESSUPOSTO DA NORMALIDADE MULTIVARIADA PARA O TESTE DE RAZÃO DE VEROSSIMILHANÇA ENTRE DOIS GRUPOS DE CARACTERES DE MAMONEIRA / ASSUMPTION OF MULTIVARIATE NORMALITY FOR THE LIKELIHOOD RATIO TEST BETWEEN TWO GROUPS OF CHARACTERS OF CASTOR BEANS
The likelihood ratio test for independence between two groups of variables allows us to identify whether there is a dependency relationship between two groups of variables, ie, if the covariance between the two groups are zero. This test assumes normality multivariate data, which limits its application, in many studies of agronomic area, times when you need
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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4. Extensões da estatística scan espacial utilizando técnicas de otimização multi-objetivo
This work presents three new extensions of Kulldorffs Spatial Scan Statistic for the detection and inference of spatial clusters. Consider a map divided into m regions with known populations at risk and number of cases of some disease. We would like to know if the cases are randomly distributed over the m regions or not; if the cases are not randomly distrib
Publicado em: 2009
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5. Analise do desempenho termodinamico e ambiental de um ciclo de refrigeração e proposta de uma função global de avaliação / Thermodynamic and enviromental analisys of a refrigerator cycle performance and propose of a global function evaluation
This work presents a proposal function to vapor compression refrigerator cycle performance from environmental and thermodynamic point of view. The function was developed through the statistic analysis of a refrigerator cycle computational results. The proposal function represents an evaluation indice of efficiency and environment criterions and was developed
Publicado em: 2009
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6. Implementação da rotina de unfolding para determinação de distribuição de tamanho de grãos esféricos via distribuição de interceptos lineares e de área de seção
Na unfolding method of linear intercept distributions and secction área distribution was implemented for structures with spherical grains. Although the unfolding routine depends on the grain shape, structures with spheroidal grains can also be treated by this routine. Grains of non-spheroidal shape can be treated only as approximation. A software was develo
Publicado em: 2009
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7. Um estudo sobre estimação e predição em modelos geoestatísticos bivariados / A study on estimation and prediction in bivariate geostatistical models
Os modelos geoestatísticos bivariados denem funções aleatórias para dois processos estocásticos com localizações espaciais conhecidas. Pode-se adotar a suposição da existência de um campo aleatório gaussiano latente para cada variável aleatória. A suposição de gaussianidade do processo latente é conveniente para inferências sobre parâmetros
Publicado em: 2009
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8. Ecophysiological attributes of hybrid DKB-390 and sthocastic model for predicting grain productivity / Atributos ecofisiológicos do híbrido DKB-390 e modelo estocástico para previsão da produtividade de grãos
Maize is on of the world most important crops, given that the products generated from this cereal are largely used by sectors like starch industry, animal and human nutrition, as well as biomass energy production and refineries. For these reasons, there is frequently a huge interest in knowing the potential adoption of the main available genotypes in relatio
Publicado em: 2008
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9. Mathematical modeling to study powdery mildew (Microsphaera Diffusa) in soybean crop under CO2 effects / Modelagem matematica para o estudo do oidio em uma plantação de soja sob os efeitos do CO2
The recently climate changes of the planet are promoving alteration in the incident and development in the plants diseases. The main gas that cause this event is the carbon dioxide, CO2. Based in this fact, it was developed by Embrapa environmental, the experiment that works with futures scenarios, looking the quality of CO2 present in the atmosphere. First
Publicado em: 2007
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10. Modeling and simulation for correlations of polyethylene (PE) characteristics and final properties for individual products / Modelagem e simulação para correlação entre as caracteristicas do polietileno (PE) com as propriedades finais dos artefatos produzidos na industria
A great challenge related to polymers research has been the development of relations enabling prediction of polymer final properties according to the initial operational conditions - either during the polymerization process or the transformation process phases. These relations can be utilized to optimize the operational conditions of transformation systems a
Publicado em: 2007
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11. Influencia do tratamento de superficie na rugosidade Ra e dureza Vickers de ceramicas para cobertura incisal
The objective of this study was to evaluate the influence of surface treatment on surface roughness and Vickers hardness number of the eight dental enamel ceramics, after abrasive grinding and 4 surface treatments with polishing and/or glaze. Forty enamel ceramic disks with 8 mm in diameter and 2.0 mm thickness were made in bipartite metallic matrix for each
Publicado em: 2005
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12. Modelo para estimação da produtividade de grãos de milho no estado de São Paulo. / Model to estimate corn yield at São Paulo state, Brazil.
O presente trabalho tem por objetivo propor um modelo para estimação da produtividade de grãos de milho para o Estado de São Paulo com base nos valores mensais de temperatura, radiação solar e chuva, no intuito de disponibilizar ferramenta para o planejamento regional (identificação das épocas do ano e dos locais mais indicados para o cultivo de mil
Publicado em: 2004