Ferramentas matemáticas para modelagem da temperatura com aplicação em graus-dias para otimização da produção agrícola

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A história da ciência nas obras de química do Programa Nacional do Livro Didático para o Ensino Médio: uma análise através do conceito de substância

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O desenvolvimento da matemacia no trabalho com projetos

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

O humano pelo viés quantitativo: um exame do (neo)positivismo em Speridião Faissol, através da leitura de textos selecionados

Pós-graduação em Geografia - IGCE

The Geography of Brazilian External Trade: Right Option for a BRIC?

Words can make a difference sometimes.Brazil is – together with the other ´BRIC´- a large economy, with an increasingly high profile in the international scenario. Large domestic market makes it more likely to obtain ‘growth-led exports’ rather than ‘export-led growth’, which implies a pro-active role in international relations. The option for intensifying regional trade links is a reasonable one and perhaps even inevitable, taking into account the experience elsewhere, but the actual regional conditions raise a number of questions that have to do both with further empirical assessment and to more specific identification of expectations with regard to probable achievements. This article has shown that the road to reach significant progress in this direction is not flat and requires more clear signalling to economic agents, strong political will and a good deal of specific measures. But it has also suggested that it might provide positive results.

A relação cartográfica e geometria diferencial de Mercator a Gauss

Pós-graduação em Educação Matemática - IGCE

Some mathematical aspects and scattering amplitudes in the pure spinor formalism

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Trajetória teórico-metodológica da geografia agrária brasileira: a produção em periódicos científicos de 1939-2009

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Use of mathematical models in the study of bodily growth in GIFT strain Nile tilapia

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Mathematical modeling and analysis of the flocculation process in chambers in series

In this study, the flocculation process in continuous systems with chambers in series was analyzed using the classical kinetic model of aggregation and break-up proposed by Argaman and Kaufman, which incorporates two main parameters: K (a) and K (b). Typical values for these parameters were used, i. e., K (a) = 3.68 x 10(-5)-1.83 x 10(-4) and K (b) = 1.83 x 10(-7)-2.30 x 10(-7) s(-1). The analysis consisted of performing simulations of system behavior under different operating conditions, including variations in the number of chambers used and the utilization of fixed or scaled velocity gradients in the units. The response variable analyzed in all simulations was the total retention time necessary to achieve a given flocculation efficiency, which was determined by means of conventional solution methods of nonlinear algebraic equations, corresponding to the material balances on the system. Values for the number of chambers ranging from 1 to 5, velocity gradients of 20-60 s(-1) and flocculation efficiencies of 50-90 % were adopted.

The first frequency of cantilevered bars with geometric effect: a mathematical and experimental evaluation

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A genetic algorithm/mathematical programming approach to solve a two-level soft drink production problem

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Determinants of bird species richness, endemism, and island network roles in Wallacea and the West Indies: is geography sufficient or does current and historical climate matter?

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

The influence of floc size and hydraulic detention time on the performance of a dissolved air flotation (DAF) pilot unit in the light of a mathematical model

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)