Bootstrap Technique
Mostrando 1-12 de 21 artigos, teses e dissertações.
-
1. ANÁLISE DA FUSÃO AZUL-TRIP SOB A ÓTICA DOS GANHOS DE EFICIÊNCIA
RESUMO Este artigo objetivou fazer uma avaliação da fusão entre as companhias aéreas Azul e Trip, mensurando os potenciais ganhos de eficiência decorrentes do ato de concentração. Modelos de análise envoltória de dados (DEA), conjuntamente com a técnica de reamostragem denominada bootstrap, foram utilizados como instrumentos para obter essa mensura
Rev. econ. contemp.. Publicado em: 25/03/2019
-
2. 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
-
3. Genetic divergence among cupuaçu accessions by multiscale bootstrap resampling
This study aimed at investigating the genetic divergence of eighteen accessions of cupuaçu trees based on fruit morphometric traits and comparing usual methods of cluster analysis with the proposed multiscale bootstrap resampling methodology. The data were obtained from an experiment conducted in Tomé-Açu city (PA, Brazil), arranged in a completely random
Bragantia. Publicado em: 29/04/2015
-
4. Bootstrap confidence intervals for industrial recurrent event data
Industrial recurrent event data where an event of interest can be observed more than once in a single sample unit are presented in several areas, such as engineering, manufacturing and industrial reliability. Such type of data provide information about the number of events, time to their occurrence and also their costs. Nelson (1995) presents a methodology t
Pesquisa Operacional. Publicado em: 03/04/2012
-
5. Diferenciação genética e relações filogenéticas entre as linhagens de Microsternarchus (Gymnotiformes: Hypopomidae) na bacia do rio Negro, em função de marcadores moleculares mitocondriais e nucleares
The neotropical electric fish (Order Gymnotiformes) possesses, as one of their main characteristics, the ability to generate and detect alternating electric currents by the action of an electric organ end electroreceptors, respectively. The Electrogenic and Eletrosensory System (EES), allows these fishes to exploit the environment in which they live and to c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/06/2011
-
6. Genetic diversity and PCR-based identification of potential fumonisin-producing Fusarium verticillioides isolates infecting corn in the Philippines
Genetic diversity and identification of fumonisin-producing isolates of Fusarium verticillioides from two provinces in the Philippines were analyzed using molecular techniques. Using a Polymerase Chain Reaction (PCR)-based technique, 49 of the 54 isolates were identified as F. verticillioides, with an amplified product of 800 bp using VERT-1 and VERT-2 prime
Tropical Plant Pathology. Publicado em: 2011-08
-
7. Genetic divergence among tomato leafminer populations based on AFLP analysis.
The objective of this work was to determine the genetic differences among eight Brazilian populations of the tomato leafminer Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), from the states of Espírito Santo (Santa Tereza), Goiás (Goianápolis), Minas Gerais (Uberlândia and Viçosa), Pernambuco (Camocim de São Félix), Rio de Janeiro (São João da B
Pesquisa Agropecuária Brasileira. Publicado em: 2011
-
8. Predição de fator de simultaneidade através de modelos de regressão para proporções contínuas / Prediction of simultaneity factor using regression models for continuous proportions.
The simultaneity factor is fundamental in planning gas distribution networks. It is a multiplicator between 0 and 1 that adjusts the theoretical total consumption of a number of devices to realistic conditions. In 2005, the Instituto de Pesquisas Tecnológicas (IPT) and the Companhia de Gás de São Paulo (COMGÁS) performed a study in which the simultaneity
Publicado em: 2008
-
9. Genetic diversity of environmental Aspergillus flavus strains in the state of São Paulo, Brazil by random amplified polymorphic DNA
Aspergillus flavus is a very important toxigenic fungus that produces aflatoxins, a group of extremely toxic substances to man and animals. Toxigenic fungi can grow in feed crops, such as maize, peanuts, and soybeans, being thus of high concern for public health. There are toxigenic and non-toxigenic A. flavus variants, but the necessary conditions for expre
Memórias do Instituto Oswaldo Cruz. Publicado em: 16/08/2007
-
10. Uma modificação da extensão do algoritmo AID para modelos lineares generalizados usando reamostragem Bootstrap
One of the most frequently situation found by researchers is to find groups of similar individuals. The cluster analysis is a set of statistical techniques that identify mutually exclusive subgroups or classes over individuals, based on their similarity. When then main is to group means of treatments we can use contrasts, multiple comparitions or clustering
Publicado em: 2006
-
11. PSP e métodos ágeis na melhoria da qualidade em produção de software: um estudo de caso / Improving the quality of the software production using PSP and agile methods: a case study
Small and medium sized software development organizations face challenges to develop quality software. Costs to adhere to international quality standards are very high, making it almost impossible to adopt and acquire maturity evaluations based on those standards. One plausible and less expensive way to increase product quality is investing in personal softw
Publicado em: 2006
-
12. Stochastic models with heteroscedasticity for time series in finance / Modelos estocásticos com heterocedasticidade para séries temporais em finanças
In this work we present a study of autoregressive conditional heteroskedasticity models (ARCH) and autoregressive models with autoregressive conditional heteroskedasticity errors (AR-ARCH). We also present procedures for the estimation and the selection of these models. The estimates of the parameters of those models are obtained using both Maximum Likelihoo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/05/2005