Growth Empirical Models
Mostrando 1-12 de 50 artigos, teses e dissertações.
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1. R&D spillovers from international student flows: a brics analysis
Abstract Paper aims to analyze the international flow of students - both from developed and underdeveloped countries - and to observe their significance for the productivity gains of the country of origin of these students. Originality The main contributions to the literature are the understanding of how student flows affect countries' economic growth, as
Prod.. Publicado em: 04/11/2019
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2. An empirical model to estimate the growth of ice crystals for storage of Tilapia at variable temperature conditions
Abstract Empirical models can be used to represent the recrystallization process in frozen food as a simple strategy (limited by the complexity of the process). Anyway, the empirical model has a better fit when used within the range of experimental values from which they were generated. In this work, an empirical mathematical model derived from the Arrhenius
Food Sci. Technol. Publicado em: 30/05/2019
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3. Controlling sintering and grain growth of nanoceramics
Resumo Sinterização e crescimento de grão são processos fundamentais que afetam a evolução microestrutural das cerâmicas. Os modelos fenomenológicos que descrevem esses processos, conforme encontrados nos livros didáticos, são simplificações do conjunto altamente dinâmico de parâmetros do sistema, o que leva à previsibilidade limitada e à nec
Cerâmica. Publicado em: 2019-01
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4. Microbial growth models: A general mathematical approach to obtain μ max and λ parameters from sigmoidal empirical primary models
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 biological parameters. The objective of the current study was to propose mathematical
Braz. J. Chem. Eng.. Publicado em: 2017-04
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5. Sistema nacional de inovação e restrição externa ao crescimento
RESUMO According to the literature on export-led growth models differences in income elasticities of demand for imports and exports among countries bring about different degrees of external constraint on growth. However, there is not in this literature an explanation that uses the Evolutionary concept of National Innovation System (NIS) that shows why there
Brazil. J. Polit. Econ.. Publicado em: 2016-12
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6. Maternal depression and child development: Evidence from São Paulo’s Western Region Cohort Study
Summary Introduction: While a growing body of evidence has investigated the relationship between maternal mental health and child development, evidence on children’s early life outcomes remains mixed. We analyze the empirical relationship between maternal depression and children’s development at age one using data from the São Paulo Western Region Coho
Rev. Assoc. Med. Bras.. Publicado em: 2016-09
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7. A Dilatometric Study of the Influence of Residual Iron Content on the Annealing Behavior of Cartridge Brass
Solid solutions alloys may have their annealing behavior affected by solute concentration. Mathematical models assume complex equations with parameters of hard and tedious assessment making empirical tests rather necessary. This work evaluated the residual iron content (from ~100 ppm to ~600 ppm) influence on annealing of a cartridge brass. Dilatometry resul
Mat. Res.. Publicado em: 15/03/2016
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8. Models of protein and amino acid requirements for cattle
Protein supply and requirements by ruminants have been studied for more than a century. These studies led to the accumulation of lots of scientific information about digestion and metabolism of protein by ruminants as well as the characterization of the dietary protein in order to maximize animal performance. During the 1980s and 1990s, when computers became
R. Bras. Zootec.. Publicado em: 2015-03
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9. Uma análise do emprego no setor da construção civil nos estados do nordeste brasileiro: qualidade do emprego formal e o retorno da educação
The Construction Industry has gained prominence on the national scene due to its ability to generate employment, and absorb much of the disqualified labor. On that perspective, this research aims to measure the quality of formal employment and quantify the impact of schooling on income of Construction Industry workers in the states of Northeast Brazil. In or
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/09/2012
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10. Social security system reforms in the Democratic Republic of Congo : initiating cash transfers in the fight against poverty = Reforma do sistema de seguridade social na República Democrática do Congo: introduzindo o programa de transferência de renda no combate à pobreza / Reforma do sistema de seguridade social na República Democrática do Congo : introduzindo o programa de transferência de renda no combate à pobreza
With the current global economic market imbalances and the policy instability of financial institutions patterning our World, the less fortunate are mainly the forgotten reserve army of unemployed population. This situation accentuates the poorer the country is. Our focus in this dissertation is this population classified as the poor who are left out of the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/05/2012
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11. Estratégias para tratamento de variáveis com dados faltantes durante o desenvolvimento de modelos preditivos / Strategies for treatment of variables with missing data during the development of predictive models
Predictive models have been increasingly used by the market in order to assist companies in risk mitigation, portfolio growth, customer retention, fraud prevention, among others. During the model development, however, it is usual to have, among the predictive variables, some who have data not filled in (missing values), thus it is necessary to adopt a proced
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/05/2012
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12. Growth characteristics modeling of Bifidobacterium bifidum using RSM and ANN
The aim of this work was to optimize the biomass production by Bifidobacterium bifidum 255 using the response surface methodology (RSM) and artificial neural network (ANN) both coupled with GA. To develop the empirical model for the yield of probiotic bacteria, additional carbon and nitrogen content, inoculum size, age, temperature and pH were selected as th
Brazilian Archives of Biology and Technology. Publicado em: 2011-12