108 resultados para PARAMETROS MATEMATICOS
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Engenharia e Ciência de Alimentos - IBILCE
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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A Pesquisa Operacional (PO) oferece ferramentas, usando modelos matemáticos, que descrevem situações do mundo real das empresas e do governo. Estes modelos permitem otimizar lucros ou minimizar custos através da Programação Linear (PL), considerada a maior descoberta da matemática aplicada do século XX. Sua aplicabilidade é imensa e a programação computacional é simples. Por exemplo, o uso de software como o Excel, garante encontrar a solução para problemas que podem envolver um número grande de variáveis e assim auxiliar os agentes na tomada de decisão. Vários Prêmios Nobel em Economia tiveram a PL envolvido em seu conteúdo, por exemplo, os prêmios dados a Leonid Kantorovich, Leonid Hurwicz, Tjalling Koopmans Kenneth, Kenneth J. Arrow e Robert Dorfman, Paul Samuelson e Robert Solow. A Teoria das Filas, utilizada neste trabalho, é uma ferramenta da PO que envolve distribuição de probabilidades e permite investigar a chegada e atendimento de clientes, a partir de certos números de canais disponíveis. O caso em análise é uma fila do caixa rápido do supermercado Oba Hortifruti, localizado na cidade de Indaiatuba - São Paulo. A fila possui característica M/M/1, no qual o primeiro M denota que a chegada de clientes à fila segue uma distribuição de Poisson, o segundo M denota que o tempo de atendimento dos clientes segue a distribuição Exponencial e o 1 significa que há apenas um canal de atendimento. A aplicação desta ferramenta sugere uma otimização do serviço para que o mesmo se torne estável (objetivo qualitativo), gerando assim uma maior satisfação do cliente com o atendimento, podendo elevar a margem de lucro do estabelecimento em estudo (objetivo quantitativo)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA
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Pós-graduação em Matemática Universitária - IGCE
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Educational games are responsible for part of the information assimilated by the child, because these games respect the individual learning time, enabling experimentation and, consequently, being an accessory to retain the acquired knowledge spontaneously. However, the analogy between stimulus and reception/result is not always the expected. On the one hand, there are the pedagogues, bearing the knowledge necessary to the children’s development. On the other hand, are the children, who cannot completely assimilate the concept, commonly because of lack of planning on the product. After all, the children become not interested in the game, without developing the expected cognitive abilities planned for the product. Whereas the importance of the games on children’s development, this work aimed to analyze and select educational games presented on the preschool, based on the language exploration from the Design’s knowledge and skills. Specifically, the research intends to investigate games targeted to stimulate geometric concepts, and so, to describe parameters that must be observed during the product planning.
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The numeric simulation is an important tool applied in understanding the dynamics of groundwater flow. In a hydrogeological model the processes responsible for groundwater flow are described by numerical formulations that allow the simplification, representation and understanding of the dynamics of the Aquifer System. In this work, a steady state groundwater flow simulation of Urucuia Aquifer System (UAS) part of the Corrente river basin was conducted, using the finite element method through software FEFLOW, to understand the dynamics of groundwater flow and quantify the hydrologic balance. The aquifer system Urucuia lodges in the São Francisco hydrogeological province and corresponds to a set of interconnected aquifers that occur in rocks from Urucuia group in the Urucuia sub-basin described by Campos e Dardenne (1997). The system is a porous media one, in a shape of a thick table mountain, consisting essentially of sandstones. The Corrente river basin is located in UAS in Western State of Bahia and it's one of the main units to maintaining permanent flow (Q95) and average natural flow of the São Francisco river. The simulation performed in this work obtained the following results for the modelled region: horizontal hydraulic conductivity of 3 x 10-4 m/s and vertical one 6 x 10-5 m/s; maximum recharge of 345 mm and minimum of 85 mm/a. It was concluded that: (1) regional groundwater flow has eastbound; with an exception of the extreme northeast portion, where the flow has opposite direction; (2) there are smaller water side dividers with an approximate direction EW, that guide the flow of water to the drainage that cut the aquifer; and (3) the UAS at Corrente river basin can be understood as a free regional aquifer system, isotropic and homogeneous. Regionally, the small lithological variations present in the Urucuia group can be neglected and do not exhibit significant influences on the dynamics of ground water flow
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The water management in any area is highly important to the success of many business and also of life and the understanding of your relationship with the environment brings better control to its demand. I.e. hydrogeological studies are needed under better understanding of the behavior of an aquifer, so that its management is done so as not to deplete or harm it. The objective of this work is the numerical modeling in transient regime of a portion of the Rio Claro aquifer formation in order to get answers about its hydrogeological parameters, its main flow direction and also its most sensitive parameters. A literature review and conceptual characterization of the aquifer, combined with field campaigns and monitoring of local water level (NA), enabled the subsequent construction of the mathematical model by finite elements method, using the FEFLOW 6.1 ® computational algorithm. The study site includes the campus of UNESP and residential and industrial areas of Rio Claro city. Its area of 9.73 km ² was divided into 318040 triangular elements spread over six layers, totaling a volume of 0.25 km³. The local topography and geological contacts were obtained from previous geological and geophysical studies as well as profiles of campus wells and SIAGAS / CPRM system. The seven monitoring wells on campus were set up as observation points for calibration and checking of the simulation results. Sampling and characterization of Rio Claro sandstones shows up a high hydrological and lithological heterogeneity for the aquifer formation. The simulation results indicate values of hydraulic conductivity between 10-6 and 10-4 m / s, getting the Recharge/Rainfall simulation in transient ratio at 13%. Even with the simplifications imposed on the model, it was able to represent the fluctuations of local NA over a year of monitoring. The result was the exit of 3774770 m³ of water and the consequently NA fall. The model is considered representative for the...
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Modelagem matemática para otimização de um potencial hidráulico utilizando turbinas Francis e Kaplan
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Pós-graduação em Engenharia Mecânica - FEG
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Pós-graduação em Agronomia (Ciência do Solo) - FCAV
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Pós-graduação em Matemática em Rede Nacional - IBILCE
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)