Artigos científicos, teses e dissertações
Publicados nas melhores instituições de ensino

We are dealing with a modelling of leishmaniasis considering initially the urban cycle with 2-hosts aiming to extend the results to a peridomestic cycle for n-hosts. In the urban case we consider the vector population constant, also, variable. We simplify the model the assess the...

ABSTRACT Covered lagoon biodigesters (CLB) have been widespread in Brazil in the treatment of pig manure. However, the quantification of biogas production in CLB using mathematical models is still limited and scarce. This study aimed to evaluate and compare six mathematical model...

(...)The rapid increase of the wind power penetration in the conventional grids all over the world has been requiring (from electricity companies and wind farm promoters) a special attention to the short-term prediction of wind farms output. Fomented by interest and necessity, co...

This study aims to present an interpretation about process of formulating hypotheses in Mathematical Modeling, within the mathematics education context - bu means of the theoretical assumptions of de role played the French philosopher and mathematician Jules Henri Poincaré (1854-...

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We have developed a deterministic mathematical model based on the mass-action principle, in analogy to the works that study the dynamics of infectious diseases in Epidemiology. We analyzed the dynamic of rumors spreading, taking into account the symmetry of contacts among suscept...

Abstract Empirical sigmoidal models have been widely applied as primary models to describe microbial growth in foods. In predictive microbiology, the maximum specific growth rate (µ max ) and the lag phase (λ) are the parameters of some models and have been considered as biologi...

The objective of this study was to evaluate the use of different mathematical models to describe growth of grazing beef cattle. Data of 20 Nellore bulls with initial weight of 129±28.1 kg and final weight of 405±62.0 kg were used. The animals were randomly divided into four plots...

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Mathematical models can help to prevent high levels of toxic substances in soil or fruits of plants treated with pesticides and indicate that such substances should be systematically monitored. The aim of this research was to study the kinetics of paclobutrazol biodegradation by ...

ln this work is presenteel the moeleling anel the simulation for three mathematical models for three-phase catalytic reactor. The models are steadly-state and one-diimensional. The mathematical formulation of the models is shown, by the consieleration of the mass and energy balan...

The generation of mathematical models through the quantitative relationship between the chemical structure and the biological activity (QSARs) of compounds was used in this investigation. Mathematical models were generated from compounds available in literature that predicting th...

The Cutting Stock Problem consists of determining the best form to cut units of material (objects in supply), producing a set of lesser units (demanded item), with specific dimensions, that are ordered through an order wallet. To minimize the loss of material this study des...

A number of mathematical models have been tested for their suitability in representing the dose response curve of a specific assay of the hormone human placental lactogen (HPL).1...

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Mathematical models for hydrodynamic characteristics evaluation of reactors are commonly used however there is a lack of information in the literature concerning the application of mathematical modeling for non-steady state flow. In this thesis, it is presented a non-steady mathe...

Breast cancer mortality rates have shown only modest improvemen despite the advent of effective chemotherapeutic agents which have been administered to a large percentage of women with breast cancer. In an effort to improve breast cancer treatment strategies, a variety of mathema...