Finite Population
Mostrando 1-12 de 197 artigos, teses e dissertações.
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1. Fertility Life Table, Population Parameters and Biotic Potential of Helicoverpa gelotopoeon (Dyar) (Lepidoptera: Noctuidae)
Abstract Helicoverpa gelotopoeon is an endemic pest of South America that affects soybean and other important crops. Life tables are a fundamental tool used to study insect populations, resulting in crucial information for integrated pest management programs. Therefore, the aim of this study was to evaluate the biotic potential and the construction of a life
An. Acad. Bras. Ciênc.. Publicado em: 25/10/2018
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2. CHOOSING THE OPTIMAL GEL MORPHOLOGY IN ELECTROPHORESIS SEPARATION BY A DIFFERENTIAL EVOLUTION APPROACH (DEA)
Abstract This paper introduces an effective optimization approach to investigate the morphological effects of nanocomposite gel electrophoresis and operational parameters (see below) by integrating the numerical simulations based on finite element method and population-based search algorithm such as differential evolution. Simulations are performed to study
Braz. J. Chem. Eng.. Publicado em: 2016-03
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3. Demographic fitness of Belminus ferroae (Hemiptera: Triatominae) on three different hosts under laboratory conditions
Triatominae are widely recognised for their role as vectors of Trypanosoma cruzi. One of the main biological characteristics of this subfamily is their obligate haematophagous condition. However, previous studies on Belminus herreri and Belminus ferroae suggested that cockroaches are their principal hosts in domiciles. Due to this peculiar behaviour, the aim
Mem. Inst. Oswaldo Cruz. Publicado em: 2013-11
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4. Numerical aspects of direct quadrature-based moment methods for solving the population balance equation
Direct-quadrature generalized moment based methods were analysed in terms of accuracy, computational cost and robustness for the solution of the population balance problems in the [0,∞) and [0,1] domains. The minimum condition number of the coefficient matrix of their linear system of equations was obtained by global optimization. An heuristic scaling rule
Braz. J. Chem. Eng.. Publicado em: 2013-09
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5. Recombination and Genetic Diversity
In this paper we present a spatial stochastic model for genetic recombination, that answers if diversity is preserved in an infinite population of recombinat-ing individuals distributed spatially. We show that, for finite times, recombination may maintain all the various potential different types, but when time grows infinitely, the diversity of individuals
TEMA (São Carlos). Publicado em: 2012-12
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6. A CONJUNTURA DOS INSTRUMENTOS DA POLÍTICA ESTADUAL DE RECURSOS HÍDRICOS NO ESTADO DO RIO GRANDE DO SUL / A SITUATION OF POLICY INSTRUMENTS STATE WATER RESOUCERS IN THE RIO GRANDE DO SUL STATE.
Water is a precious resource, it is essential to the life of any living being, being used in multiple uses. Speaking of water is also addressing the issue of quality of life in a population, so it is important to reflect on the management and management of water resources in Brazil and Rio Grande do Sul (RS), so that it can guarantee the quality and quantity
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/08/2011
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7. On the significance of higher order differential terms in diffusion processes
This paper deals with the analysis of diffusion coupled with temporary retention motivated by the challenge to solve the problem of population spreading. Retention may be associated to colonization of the occupied territory in this case. The discrete approach was selected to deal with this problem due to its relative simplicity and straightforward mathematic
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-06
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8. Limited memory and the essentiality of money
This paper investigates the relationship between memory and the essentiality of money. We consider a random matching economy with a large finite population in which commitment is not possible and memory is limited in the sense that only a fraction m E(0; 1) of the population has publicly observable histories. We show that no matter how limited memory is, the
Publicado em: 25/06/2010
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9. Implantação do núcleo de gestão administrativa e financeira e o impacto para a modernização administrativa da Polícia Militar da Bahia. / The introduction of an administrative and financial management structure and its impact on the modernization process.
The aim of this research is to understand the impact for the modernization of the administration of the Military Police in Bahia (PMBA) and to understand the receptivity of the actors involved as regards the reform that created the Financial and Administrative Management Group (NUGAF). This change brings about transformations not only in formal aspects but a
Publicado em: 2010
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10. Algoritmos evolucionÃrios multipopulaÃÃo na otimizaÃÃo multiobjetiva da remediaÃÃo de Ãguas subterrÃneas / Multi-population Evolutionary Algorithm Multi-Objective Optimization of Groundwater Remediation
Through the last three decades the evolutionary algorithms have been successful on application to many areas. Easily applied, efficiency and confidence are the main advantages of the evolutionary algorithms. In the groundwater remediation, generally, the objectives are the cost minimization, minimization of contaminant presence, maximization of pumping effic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/07/2009
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11. Finite population mixed models with endogenous and exogenous measurement errors / Modelos mistos para populações finitas com erros de medida endógenos e exógenos
We consider optimal estimation and prediction of latent values based on data subject to endogenous and exogenous measurement errors, obtained via simple random sample from a finite population. We consider a finite population mixed model (FPMM) with endogenous and exogenous measurement errors proposed by Stanek III et al. (2004) and Stanek III &Singer (2004)
Publicado em: 2009
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12. A study of the spread of dengue using partial differential equations and fuzzy logic / Um estudo sobre o espalhamento da dengues usando equações diferenciais parciais e logica fuzzy
The aim of this work is to study dengue and, with this purpose, some mathematical models were created to simulate its evolution in the southern district of the city of Campinas. The human population was subdivided into three compartments, according to the state of the individuals { susceptible, infectious or recovered. The interaction between these different
Publicado em: 2009