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Streamlined approaches for image classification using principal component analysis and hierarchical clustering of extrudates from coffee and sorghum blends. Author(s): HIDALGO CHÁVEZ, D. W.; SILVA, F. L. C. DA; PINTO, R. V.; CARVALHO, C. W. P. de; FREITAS-SILVA, O. This article describes simple methods to group images including principal component analysis (PCA) and hierarchical clustering of principal components (HCPC). Images of expanded and low expanded extru... ... Repository: BDPA Publication year: 2023
Hierarchical classification of soybean in the Brazilian Savanna based on Harmonized Landsat Sentinel data. Author(s): PARREIRAS, T. C.; BOLFE, E. L.; CHAVES, M. E. D.; DEL'ARCO SANCHES, I.; SANO, E. E.; VICTORIA, D. de C.; BETTIOL, G. M.; VICENTE, L. E. Abstract. The Brazilian Savanna presents a complex agricultural dynamic and cloud cover issues; therefore, there is a need for new strategies for more detailed agricultural monitoring. Using a hierarc... ... Repository: BDPA Publication year: 2022
Characterization of histosol: proposal to the brazilian soil classification system. Author(s): PEREIRA, M. G.; VALLADARES, G. S.; ANJOS, L. H. C.; EBELING, A. G.; BENITES, V. de M. Repository: BDPA Publication year: 2006
Robustness of germination analysis methods for Copaifera langsdorffii Desf. (Fabaceae) seeds. Author(s): SANTANA, D. G. de; LOBO, G. A.; SALOMAO, A. N.; PEREIRA, V. J. Repository: BDPA Publication year: 2016
Soil classification from visible/near-infrared diffuse reflectance spectra at multiple depths. Author(s): VASQUES, G. de M.; DEMATTE, J. A. M.; LOPEZ, L. R.; TERRA, F. da S. Abstract : Visible/near-infrared diffuse reflectance spectroscopy (VNIRS) offers an alternative to conventional analytical methods to estimate various soil attributes. However, the use of VNIRS in soi... ... Repository: BDPA Publication year: 2011
Ecological classification of Brazilian earthworms: a first attempt using morphological data. Author(s): ANDRADE, D. P. de; BROWN, G. G.; CALLAHAM JÚNIOR, M. A. Repository: BDPA Publication year: 2010
Sample size for monitoring sirex populations and their natural enemies. Author(s): PENTEADO, S. do R. C.; OLIVEIRA, E. B. de; IEDE, E. T. A vespa-da-madeira, Sirex noctilio Fabricius (Hymenoptera: Siricidae) foi introduzida no Brasil em 1988 e tornou-se a principal praga dos plantios de pínus. Encontra-se distribuída em aproximadamente... ... Repository: BDPA Publication year: 2016
Comparação de ferramentas de tópicos em textos sob o paradigma de aprendizado estatístico não supervisionado. Author(s): COSTA, I. P. da; MOURA, M. F. Neste trabalho pretende-se estudar e explorar ferramentas de aprendizado de tópicos hierárquicos, através de coleções textuais e teoria estatística Repository: BDPA Publication year: 2014
Caracterização de uma topossequência no Parque Nacional da Serra da Canastra, MG. Author(s): SOUZA, V. V. de; MARTINS, E. de S.; BRAGA, A. R. dos S.; COUTO JÚNIOR, A. F.; CARVALHO JÚNIOR, O. A.; SANTOS, W. C. dos; LIMA, L. A. S.; CASTRO, K. B.; XAVIER, D.; PASSO, D. P.; GOMES, R. A. T. Repository: BDPA Publication year: 2010
Water quality and agricultural sustainability in the Mantiqueira Ecological Corridor, Brazil. Author(s): SANTOS, G. M.; ASSAD, M. L. R. C. L.; HOTT, M. C.; OTENIO, M. H. The presence of fecal coliforms is one of the determinants for classification of the quality of water bodies. The aim of this study was to evaluate the relationship between the water quality and surro... ... Repository: BDPA Publication year: 2014

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