Decompositions
Mostrando 1-12 de 40 artigos, teses e dissertações.
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1. O Desenvolvimento da Flexibilidade do Cálculo Multiplicativo em Alunos do 3.° Ano
Resumo Este artigo tem como objetivo compreender o modo como os alunos desenvolvem a flexibilidade de cálculo multiplicativo num contexto de ensino exploratório, pretendendo responder a três questões de investigação: (i) Quais as estratégias usadas pelos alunos quando resolvem tarefas de multiplicação?; (ii) Como evoluem as estratégias usadas pelos
Bolema. Publicado em: 01/08/2019
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2. Non-isothermal decomposition kinetics of conductive polyaniline and its derivatives
Abstract The non-isothermal decomposition kinetics of conductive polyaniline (PANI) and its derivatives, poly(o-methoxyaniline) (POMA) and poly(o-ethoxyaniline) (POEA), was investigated by thermogravimetric analysis (TGA), under inert and oxidative atmospheres, using Flynn-Wall-Ozawa’s approach to assess the kinetic parameters of the decomposition process
Polímeros. Publicado em: 21/09/2018
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3. CARACTERIZAÇÃO ELEMENTAR DA CASCA DE ARROZ E SUAS CINZAS POR MIP OES APÓS DECOMPOSIÇÃO ÁCIDA COM SISTEMA DE REFLUXO
This paper describes the optimization of a sample preparation method using response surface methodology for Al, Cd, Cu, Fe, Mg, Mn, Mo, Na, Ni and Ti determinations in samples of rice husk and rice husk ash by MIP OES. Sample preparation was performed using a reflux system adapted to the digestion tubes. This system allowed the decomposition of the samples w
Quím. Nova. Publicado em: 2017-09
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4. Estrutura de Classes, Educação e Queda da Desigualdade de Renda (2002-2011)
This paper aims to reconcile the role ascribed to education as a major cause of the recent reduction in inequality in Brazil with a class analysis framework. A series of univariate and multivariate inequality decompositions were carried out, including the between-group/within-group decomposition of the GE(0) index and the regression-based decomposition sugge
Dados. Publicado em: 2014-03
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5. RELAÇÃO ENTRE AS DEZ PRINCIPAIS BOLSAS DE VALORES DO MUNDO E SUAS CO-INTEGRAÇÕES / RELATION AMONG THE TOP TEN STOCK MARKETS IN THE WORLD AND THEIR CO-INTEGRATIONS
A internacionalização somada à abertura dos mercados financeiros transformou as economias antes fechadas em economias abertas, provocou um intercâmbio entre as economias mundiais por meio das bolsas de valores. O objetivo deste estudo é examinar a relação entre os dez principais índices econômicos do mundo, sendo eles: Nova York (DJIA, S&P500 e Nasd
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/08/2011
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6. RelaÃÃes ecolÃgicas entre Melampus coffeus (Gastropoda: Pulmonata) e a serapilheira no mÃdio estuÃrio do rio Pacoti, Cearà / Ecological relations between Melampus coffeus (Gastropoda: Pulmonata) and the leaflitter in the middle estuary of Pacoti river, CearÃ
The litter is essential for the nutrients and organic matter cycles in forests ecosystems. These vegetal detritus are a food source to many groups of animals that act directly on the litter decomposition. Litter also seems to provide microhabitats and works as a shelter for many individuals of the mangrove fauna. The gastropod Melampus coffeus (Linnaeus, 175
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/04/2011
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7. An efficient two-level preconditioner based on lifting for FEM-BEM equations
The system resulting from the coupled Finite Element Method and Boundary Element Method formulations inherits all characteristics of both finite element and boundary element equation system, i. e., the system is partially sparse and symmetric and partially full and nonsymmetric. Consequently, to solve the resulting coupled equation system is not a trivial ta
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2010-12
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8. Preconditioners for higher order finite element discretizations of H(div)-elliptic problem
In this paper, we are concerned with the fast solvers for higher order finite element discretizations of H(div)-elliptic problem. We present the preconditioners for the first family and second family of higher order divergence conforming element equations, respectively. By combining the stable decompositions of two kinds of finite element spaces with the abs
Computational & Applied Mathematics. Publicado em: 2010
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9. Análise da qualidade do crescimento no Brasil entre o período 1995-2008: uma análise comparativa entre estados e regiões brasileiras / Analysis of the quality of growth in Brazil from the period 1995-2008: a comparative analysis between states and regions Brazilian
Este trabalho foi feito com objetivo de qualificar o tipo de crescimento do Brasil, regiões e unidades da federação no período FHC (1995-2002), Lula (2002-2008) e período todo (1995- 2008), sob a ótica de ser em favor dos pobres, não pobres ou o chamado Trickle-Down, que nada mais é do que o crescimento com redução de pobreza com aumento na desigua
Publicado em: 2010
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10. Um estudo sobre a pobreza multidimensional na Região Nordeste do Brasil
The poverty is very complex to be restricted to the income insufficiency. This is a multidimensional problem that if express in terms of deficiency of basic capabilities and unmet human needs. Therefore, this work has for objective to study the poverty in the Northeast region of Brazil being considered multidimensional aspects of privation. Thus, it is initi
Publicado em: 2009
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11. Transmission of prices and volatility in the marketing of pork / Transmissão de preços e da volatilidade na comercialização da carne suína
The pork chain, despite showing significant technical improvement and competitiveness, is still one of the most volatile sectors of Brazilian agribusiness, and marketing and price fluctuation is one of the main barriers for its development. Accordingly, the present study aimed to analyze the price ratios and volatility among production agents and major meat
Publicado em: 2009
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12. Banco de filtros e wavelets sobre corpos finitos
Filter banks and wavelets are tools of Engineering, dened over complex elds, with many applications. This dissertation introduces the theory of lter banks and wavelets dened over nite elds, over cyclical and noncyclical structures. The problem of dening two-channel lter banks and wavelet decompositions over elds of characteristic two was solved, thereby prov
Publicado em: 2008