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Estatística

Estatística

 

Coleções nesta seção

  • Artigos Técnico-científicos na área de Estatística

Submissões recentes

  • Kamimura, Karina Marie; Santos, Gérson Rodrigues dos; Oliveira, Marcelo Silva de; Dias Junior, Moacir de Souza; Guimarães, Paulo Tácito Gontijo (Revista Brasileira de Ciência do Solo, 2013-04-17)
    O conhecimento da variabilidade dos atributos físicos do solo é importante para o monitoramento da qualidade do solo, pois eles estão diretamente relacionados com a sustentabilidade da produção agrícola. Este estudo teve ...
  • Kamimura, Karina Marie; Dias Júnior, Moacir de Souza; Guimarães, Paulo Tácito Gontijo; Santos, Gérson Rodrigues dos; Oliveira, Marcelo Silva de (Revista Brasileira de Ciência do Solo, 2012-08-06)
    O tráfego intensivo de máquinas agrícolas sobre solos cultivados com cafeeiros pode causar compactação excessiva, principalmente quando realizado sob condição inadequada de umidade, promovendo redução da produtividade das ...
  • Resende, Rafael Tassinari; Resende, Marcos Deon Vilela; Silva, Fabyano Fonseca; Azevedo, Camila Ferreira; Takahashi, Elizabete Keiko; Silva-Junior, Orzenil Bonfim; Grattapaglia, Dario (New Phytologist, 2016-09-08)
    Although genome-wide association studies (GWAS) have provided valuable insights into the decoding of the relationships between sequence variation and complex phenotypes, they have explained little heritability. Regional ...
  • Nascimento, Moysés; Sáfadi, Thelma; Silva, Fabyano Fonseca e; Nascimento, Ana Carolina C. (Bioinformatics, 2012-06-04)
    In a microarray time series analysis, due to the large number of genes evaluated, the first step toward understanding the complex time network is the clustering of genes that share similar expression patterns over time. ...
  • Silva, Fabyano Fonseca e; Resende, Marcos Deon V. de; Rocha, Gilson Silvério; Duarte, Darlene Ana S.; Lopes, Paulo Sávio; Brustolini, Otávio J.B.; Thus, Sander; Viana, José Marcelo S.; Guimarães, Simone E.F. (Genetics and Molecular Biology, 2013-07-07)
    The success of pig production systems, including the evaluation of alternative management and marketing strategies, requires knowledge of the body weight behavior over time, commonly referred to as the growth curve. This ...
  • Silva, Michele Jorge da; Carneiro, Antonio Policarpo Souza; Feres, Andréia Luiza Gonzaga; Carneiro, José Eustáquio Souza; Santos, Nerilson Terra; Cecon, Paulo Roberto (Revista Ceres, 2016-03-08)
    In field experiments, it is often assumed that errors are statistically independent, but not always this condition is met, compromising the results. An inappropriate choice of the analytical model can compromise the ...
  • Silva, Fabyano Fonseca; Tunin, Karen P.; Rosa, Guilherme J.M.; Silva, Marcos V.B. da; Azevedo, Ana Luisa Souza; Verneque, Rui da Silva; Machado, Marco Antonio; Packer, Irineu Umberto (Genetics and Molecular Biology, 2011-10-28)
    Nowadays, an important and interesting alternative in the control of tick-infestation in cattle is to select resistant animals, and identify the respective quantitative trait loci (QTLs) and DNA markers, for posterior use ...
  • Teixeira, F.R.F.; Nascimento, M.; Nascimento, A.C.C.; Silva, F.F. e; Cruz, C.D.; Azevedo, C.F.; Paixão, D.M.; Barroso, L.M.A.; Verardo, L.L.; Resende, M.D.V. de; Guimarães, S.E.F.; Lopes, P.S. (Genetics and Molecular Research, 2016-05-13)
    The aim of the present study was to propose and evaluate the use of factor analysis (FA) in obtaining latent variables (factors) that represent a set of pig traits simultaneously, for use in genomewide selection (GWS) ...
  • Marinho, C.D.; Martins, F.J.O.; Amaral Júnior, A.T.; Gonçalves, L.S.A.; Santos, O.J.A.P. dos; Alves, D.P.; Brasileiro, B.P.; Peternelli, L.A. (Genetics and Molecular Research, 2014-07-07)
    In Brazil, the first genetically modified (GM) crop was released in 1998, and it is estimated that 84, 78, and 50% of crop areas containing soybean, corn, and cotton, respectively, were transgenic in 2012. This intense and ...
  • Santos, V.S.; Martins Filho, S.; Resende, M.D.V.; Azevedo, C.F.; Lopes, P.S.; Guimarães, S.E.F.; Silva, F.F. (Genetics and Molecular Research, 2016-10-17)
    Age at the time of slaughter is a commonly used trait in animal breeding programs. Since studying this trait involves incomplete observations (censoring), analysis can be performed using survival models or modified linear ...
  • Santos, V.S.; Martins Filho, S.; Resende, M.D.V.; Azevedo, C.F.; Lopes, P.S.; Guimarães, S.E.F.; Glória, L.S.; Silva, F.F. (Genetics and Molecular Research, 2015-10-19)
    The aim of this study was to compare genomic selection methodologies using a linear mixed model and the Cox survival model. We used data from an F2 population of pigs, in which the response variable was the time in days ...
  • Peternelli, Luiz Alexandre; Ferreira, Fábio Medeiros; Rocha, Rodrigo Barros; Barros, Willian Silva; Barbosa, Márcio Henrique Pereira (Bragantia, 2009-05-14)
    São poucos os softwares disponíveis para a análise de parentesco e, até a presente data, nenhum pode realizar a análise de parentesco para organismos poliplóides, com número par (2k) de cromossomos. Implementou-se junto ...
  • Silva, G.N.; Tomaz, R.S.; Sant’Anna, I.C.; Carneiro, V.Q.; Cruz, C.D.; Nascimento, M. (Genetics and Molecular Research, 2016-03-28)
    Artificial neural networks have shown great potential when applied to breeding programs. In this study, we propose the use of artificial neural networks as a viable alternative to conventional prediction methods. We ...
  • Nascimento, Moysés; Cruz, Cosme Damião; Peternelli, Luiz Alexandre; Campana, Ana Carolina Mota (Genetics and Molecular Biology, 2009-11-17)
    The efficiency of simulated annealing algorithms and rapid chain delineation in establishing the best linkage order, when constructing genetic maps, was evaluated. Linkage refers to the phenomenon by which two or more ...
  • Nascimento, M; E Silva, FF; de Resende, MD; CD, Cruz; Nascimento, AC; Viana, JM; Azevedo, CF; Barroso, LM (Genetics and Molecular Research, 2017-03-22)
    Genomic selection (GS) is a variant of marker-assisted selection, in which genetic markers covering the whole genome predict individual genetic merits for breeding. GS increases the accuracy of breeding values (BV) prediction. ...
  • Ferrão, Luis Felipe V; Cecon, Paulo Roberto; Finger, Fernando Luis; Silva, Fabyano F e; Puiatti, Mario (Horticultura Brasileira, 2011-08-29)
    O gênero Capsicum compreende um grupo altamente diversificado de pimentas e pimentões constituído por grande número de espécies. A caracterização dos materiais existentes quanto à divergência genética torna-se de importância ...
  • Couto, Mauricio Farias; Peternelli, Luiz Alexandre; Barbosa, Márcio Henrique Pereira (Ciência Rural, 2012-11-21)
    The objective of this paper was to evaluate the range of classification of variation coefficient in experiments with sugarcane. For this study, some of the variables that are mostly used by researchers of the culture were ...
  • Castro, R.D.; Peternelli, L.A.; Resende, M.D.V.; Marinho, C.D.; Costa, P.M.A.; Barbosa, M.H.P.; Moreira, E.F.A. (Genetics and Molecular Research, 2016-01-08)
    The objective of this study was to assess the efficiency of a modification of the simulated individual best linear unbiased prediction (BLUPIS) procedure, which is used for the approximation of classic individuals ...
  • Macedo, Leandro Roberto de; Cecon, Paulo Roberto; Silva, Fabyano Fonseca e; Nascimento, Moysés; Puiatti, Guilherme Alves; Oliveira, Ana Carolina Ribeiro de; Puiatti, Mario (Pesquisa Agropecuária Brasileira, 2016-12-01)
    The objective of this work was to identify nonlinear regression models that best describe dry matter accumulation curves over time, in garlic (Allium sativum) accessions, using Bayesian and frequentist approaches. Multivariate ...
  • Cecon, Paulo Roberto; Araujo, Roberto Fontes; Araujo, Eduardo Fontes; Sofiatti, Valdinei (Revista Brasileira de Sementes, 2008-05-06)
    O presente trabalho foi conduzido no Laboratório de Pesquisa em Sementes da Universidade Federal de Viçosa com objetivo de estudar o efeito de diferentes materiais (sementes com 48-49, 31-32, 18-19 e 13-14% de umidade e ...

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