Bootstrap
Mostrando 25-36 de 474 artigos, teses e dissertações.
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25. Optimum plot size of planting and bio-agroeconomic revenues from arugula-carrot intercropping systems in a semi-arid region
Abstract The production of vegetable crops has been characterized as a highly intensive activity in the use of soil, water, inputs and labor in semi-arid regions, being practiced mostly by small family farmers as a way of subsistence, or in the small-scale commercialization of surplus production. Among the agricultural practices that have been successfully u
An. Acad. Bras. Ciênc.. Publicado em: 18/10/2018
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26. Pre-hospitalization, hospitalization, and post-hospitalization costs of patients with neurocysticercosis treated at the Instituto Nacional de Neurologia y Neurocirugia (INNN) in Mexico City, Mexico
ABSTRACT The objective of this study was to estimate the direct costs associated with the diagnosis and treatment of neurocysticercosis (NCC) during pre-hospitalization, hospitalization, and post-hospitalization periods for 108 NCC patients treated at the Instituto Nacional de Neurologia y Neurocirugia (INNN) in Mexico City, Mexico. Information on clinical m
Rev. Inst. Med. trop. S. Paulo. Publicado em: 28/05/2018
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27. Follow up of a robust meta-signature to identify Zika virus infection in Aedes aegypti: another brick in the wall
The mosquito Aedes aegypti is the main vector of several arthropod-borne diseases that have global impacts. In a previous meta-analysis, our group identified a vector gene set containing 110 genes strongly associated with infections of dengue, West Nile and yellow fever viruses. Of these 110 genes, four genes allowed a highly accurate classification of infec
Mem. Inst. Oswaldo Cruz. Publicado em: 28/05/2018
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28. Espécies de tripes (Insecta: Thysanoptera) associadas a flores em um fragmento de restinga no nordeste brasileiro
Resumo Com o crescente volume de pesquisas envolvendo Thysanoptera no Brasil, estudos foram promovidos para melhorar nosso entendimento da diversidade de tripes em área onde a fauna tem sido historicamente negligenciada. Dessa maneira, neste trabalho registramos a diversidade de tripes (Insecta: Thysanoptera) associada a um fragmento de restinga localizado
Braz. J. Biol.. Publicado em: 22/03/2018
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29. Factors affecting the performance of Pantaneiro horses
ABSTRACT This study aimed to assess the physical performance of Pantaneiro horses with and without equine infectious anemia (EIA) under functional conditions of cattle management. The horses were subjected to a performance test and split into two groups according to a completely randomized design: animals were chosen from populations testing positive and neg
R. Bras. Zootec.. Publicado em: 05/03/2018
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30. Energia metabolizável de alimentos energéticos para suínos em crescimento e validação cruzada de modelos de regressão
RESUMO O presente estudo teve por objetivo determinar a energia metabolizável aparente (EMA) de seis cultivares de milho, dois cultivares de sorgo e dois farelos de trigo e avaliar a validação cruzada de modelos de predição da EMA do milho, sorgo e farelo de trigo para suínos em crescimento, estimados com base na composição química. Quarenta e quatr
Rev. Ciênc. Agron.. Publicado em: 2018-03
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31. GAUSSIAN SPATIAL LINEAR MODEL OF SOYBEAN YIELD USING BOOTSTRAP METHODS
ABSTRACT This study aims to quantify the uncertainties associated to the parameters of a Gaussian spatial linear model (GSLM) and the assumption of normality residuals in the modeling of the spatial dependence of the soybean yield as a function of soil chemical attributes. The spatial bootstrap methods were used to determine the point and interval estimators
Eng. Agríc.. Publicado em: 2018-01
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32. O efeito do risco de informação assimétrica sobre o retorno de ações negociadas na BM&FBOVESPA
RESUMO Este estudo buscou analisar a assimetria informacional no mercado de ações brasileiro e sua relação com os retornos requeridos de portfólios por meio da métrica volume-synchronized probability of informed trading. Para isso, o estudo utilizou dados reais oriundos das transações de 142 ações realizadas na Bolsa de Valores, Mercadorias e Futur
Rev. contab. finanç.. Publicado em: 2017-12
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33. Estimating Sample Size of Soil Cone Index Profiles by Bootstrapping
ABSTRACT Measurements of the soil cone index are widely used to assess soil resistance to root penetration (SR) and to monitor the soil compaction status of agricultural fields. However, soil sampling for SR estimation is a rather challenging task in view of the high spatial and temporal variability of the soil. This study proposed a bootstrapping method to
Rev. Bras. Ciênc. Solo. Publicado em: 17/11/2017
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34. Predicting pathway cross-talks in ankylosing spondylitis through investigating the interactions among pathways
Given that the pathogenesis of ankylosing spondylitis (AS) remains unclear, the aim of this study was to detect the potentially functional pathway cross-talk in AS to further reveal the pathogenesis of this disease. Using microarray profile of AS and biological pathways as study objects, Monte Carlo cross-validation method was used to identify the significan
Braz J Med Biol Res. Publicado em: 13/11/2017
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35. Tamanho de amostra para estimar o coeficiente de correlação de Pearson em ensaios com tomate cereja
RESUMO: O objetivo deste trabalho foi determinar o tamanho de amostra necessário para estimar o coeficiente de correlação de Pearson entre variáveis do tomate cereja. Foram instalados dois ensaios de uniformidade em ambiente protegido na primavera/verão de 2014. As variáveis observadas em cada planta foram comprimento médio de fruto, largura média de
Cienc. Rural. Publicado em: 12/09/2017
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36. Plot size and number of replications to evaluate the grain yield in oat cultivars
ABSTRACT The objectives of this study were to determine the optimum plot size (Xo) and the number of replications to evaluate grain yield and verify the variability of Xo among oat cultivars. Thirtytwo uniformity trials of 3 × 3 m were performed, being 8 from each cultivar (URS Charrua, URS Taura, URS Estampa, and URS Corona). Each uniformity trial was divi
Bragantia. Publicado em: 14/08/2017