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Improving agricultural economic efficiency in Brazil. Author(s): SOUZA, G. da S. e; GOMES, E. G. In this article, we use Brazilian census data (1995/1996 and 2006) to model agricultural production at the state level in Brazil. Cost-efficiency measurements are computed using data envelopment analy... ... Repository: BDPA Publication year: 2015
Comparison between artificial neural networks and maximum likelihood classification in digital soil mapping. Author(s): CHAGAS, C. da S.; VIEIRA, C. A. O.; FERNANDES-FILHO, E. I. Soil surveys are the main source of spatial information on soils and have a range of different applications, mainly in agriculture. The continuity of this activity has however been severely compromise... ... Repository: BDPA Publication year: 2013
Association of an insulin-like growth factor 1 gene microsatelit with phenotypic variation and estimated breeding values of growth traits in Canchim cattle. Author(s): ANDRADE, P. C.; GROSSI, D. A.; PAZ, C. C. P.; ALENCAR, M. M. de; REGITANO, L. C. de A.; MUNARI, D. P. A population of 1398 Canchim (CA) cattle was genotyped to asses the association of na insulin-like growth factor 1 (IGF1) gene microsatellite with phenotypic variation and estimated breeding values of... ... Repository: BDPA Publication year: 2008
Influência do declive na exatidão do classificador MAXVER para o mapeamento da cultura do café. Author(s): SANTOS, W. J. R. dos; ALVES, H. M. R.; VIEIRA, T. G. C.; VOLPATO, M. M. L. This work evaluates the influence of slope in the classification of remotely sensed images used to map coffee lands of the region of Três Pontas in the state of Minas Gerais in Brazil. A Landsat image... ... Repository: BDPA Publication year: 2009
A non-archimedean dea model to assess group comparisons. Author(s): SOUZA, G. da S. e; GOMES, E. G. We consider the use of the non-Archimedean infinitesimal epsilon in DEA-CCR models. The application of interest is defined by the performance measure of the Brazilian Agricultural Research Corporation... ... Repository: BDPA Publication year: 2016
Análise comparativa de diferentes imagens de satélites para uso de classificação supervisionada na região do Vale dos Vinhedos - RS. Author(s): DEITOS, R. G.; NHOATTO, M. P.; HOFF, R.; FIALHO, F. B. A obtenção de imagens de satélite de sensoriamento remoto tem sido amplamente utilizada para a aplicação em projetos de mapeamento e classificação de uso do solo. Repository: BDPA Publication year: 2019
Assessing the significance of covariates in output oriented data envelopment analysis with two stage regression models. Author(s): SOUZA, G. da S. e; GOMES, E. G. We propose alternative regression models to assess the effects of covariates in output oriented DEA scores. We use probability choice models combined with specifications related to the gamma and to th... ... Repository: BDPA Publication year: 2014
Classificador de máxima verossimilhança aplicado à identificação de espécies nativas na Floresta Amazônica. Author(s): MORAS FILHO, L. O.; FIGUEIREDO, E. O.; ISAAC JÚNIOR, M. A.; BARROS, V. C. C. de; HOTT, M. C.; BORGES, L. A. C. Among a variety of digital classification methods based on remote sensing images, the Maximum Likelihood (ML) is widely used in environmental studies, mainly for land cover and vegetation analysis. Th... ... Repository: BDPA Publication year: 2017

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