Stochastic Modelling
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Yellow fever impact on brown howler monkeys (Alouatta guariba clamitans) in Argentina: a metamodelling approach based on population viability analysis and epidemiological dynamics
In South America, yellow fever (YF) is an established infectious disease that has been identified outside of its traditional endemic areas, affecting human and nonhuman primate (NHP) populations. In the epidemics that occurred in Argentina between 2007-2009, several outbreaks affecting humans and howler monkeys (Alouatta spp) were reported, highlighting the
Mem. Inst. Oswaldo Cruz. Publicado em: 23/10/2015
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2. Modelagem e avaliação comparativa dos métodos Luus-Jaakola e R2W aplicados na estimativa de parâmetros cinéticos de adsorção / Modeling and comparative evaluation of Luus-Jaakola and R2W methods applied in estimating kinetic parameters of adsorption
As técnicas inversas têm sido usadas na determinação de parâmetros importantes envolvidos na concepção e desempenho de muitos processos industriais. A aplicação de métodos estocásticos tem aumentado nos últimos anos, demonstrando seu potencial no estudo e análise dos diferentes sistemas em aplicações de engenharia. As rotinas estocásticas sã
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/06/2012
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3. Modelagem do planejamento agregado da produção em usinas cooperadas do setor sucroenergético utilizando programação matemática e otimização robusta
The main concern of this work is related to the development of an aggregate production planning model of a cooperative society of sugar and alcohol milling companies. This mathematical model is based on a hierarquical approach between the annual planning problem of the cooperative and the tactical planning horizon of the sugarcane mills. In the cooperative l
Publicado em: 2009
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4. Support vector machines and particle swarm optimization applied to reliability prediction
Reliability is a critical metric for organizations since it directly influences their performance in face of the market competition, as well as is essential in maintaining their production systems available. The prediction of such quantitaive metric is then of great interest, as it may anticipate the knowledge about system failures and let organizations avoi
Publicado em: 2009
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5. Modelagem estocástica de neurônios e sua interação em tempo real com neurônios biológicos / Stochastic neural modelling and interfacing neurons and models in real-time
We developed a mathematical model of the electrical activity of a motor neuron from the stomatogastric ganglion of crustaceans. It was inspired on a previous existing deterministic model which is considered as electrophysiologically plausible in the recent literature. However, this deterministic model were not able to reproduce the irregular bursting behavio
Publicado em: 2008
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6. Modelagem markoviana de comunicação em redes de satélites / Markovian model of satellite network communication
Um dos objetivos de sistemas de satélites de comunicação é conectar pessoas distantes geograficamente, permitindo a transmissão de dados, sinais de radio e televisão, telefonia móvel e internet, entre outros. Neste trabalho modela-se um sistema de satélites de comunicação por um processo markoviano. Inicialmente, considera-se uma constelação de s
Publicado em: 2008
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7. Modelling and evaluation of industrial plants useful life extension / Modelagem e avaliação da extensão da vida útil de plantas industriais
During the useful life of an industrial plant, the failure occurrence follows an exponential distribution. However, the aging process in an industrial plant generates an increase of the failure number. The failure probability is a rating for the maintenance stopping process. In this paper, an statistical method for the assessment of the failure probability a
Publicado em: 2008
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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. Avascular tumor modelling: from celular automata to multiscale models / Modelagem de tumores avasculares: de autômatos celulares a modelos de multiescala
The majority of the clinically used anti-cancer therapies has been developed empirically [1], but the tumour and organism response to these therapies are nonlinear. Therefore mathematical models might be complementary (may be necessary) tools for the understanding of the drug response dynamics in the organism. In this dissertation, some of these models are s
Publicado em: 2007
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10. Estimativa de consumo de energia de cÃdigo ANSI-C para sis- temas embarcados: uma abordagem baseada em simulaÃÃo estocÃstica
Embedded Systems are present in most daily activities with many different purposes. Generally, embedded systems have several design constraints, such as memory size, power source, CPU speed, and so on. Over the last years, power consumption has been receiving particular attention from scientific community since several embedded devices rely on battery as pow
Publicado em: 2007
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11. Study of application of quantitative methods in seismic data in the integrated reservoir characterization process / Estudo de aplicação de metodos quantitativos em dados sismicos no processo de caracterização integrada de reservatorios
The reservoir characterization process can be considered curretly the most important stage in the exploration, development and production of the oil field. However, this process is only carried out in the best way if the geologists, geophisicist and engineering has the knowledge of some definitive methods and techniques that integrated all information availa
Publicado em: 2007
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12. Mapping the intrinsic stochasticity of tokamak divertor configuration
Poloidal divertors are, more than ever before, a crucial topic for the advancement of magnetic fusion technology. Due to the often non linear and stochastic nature of the plasma edge phenomena, canonical mapping has provided a powerful method at modelling their characteristics, albeit many authors rely on heuristically adapted schemes. Thus, it is reported h
Brazilian Journal of Physics. Publicado em: 2006-06