Conditional Correlation
Mostrando 1-12 de 51 artigos, teses e dissertações.
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1. Frequency and factors associated with Toxoplasma gondii infection in pregnant women and their pets in Ilhéus, Bahia, Brazil
Abstract INTRODUCTION: Toxoplasmosis is an asymptomatic disease that can lead to systemic disease in the fetus of pregnant women with primary infection. This study aimed to determine the prevalence of toxoplasmosis, associated factors, and correlation between the serology of pregnant women and their pets, in the municipality of Ilhéus, Bahia, Brazil. MET
Rev. Soc. Bras. Med. Trop.. Publicado em: 02/12/2019
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2. Genetic evaluation models for post-weaning weight gain in a multibreed Angus-Nelore population
Resumo: O objetivo deste trabalho foi identificar o modelo mais adequado para avaliação genética do ganho de peso pós-desmama em uma população multirracial de Angus-Nelore. Foram testados três modelos com uso do método de inferência bayesiana: animal tradicional (M1), animal multirracial sem (M2) e com segregação (M3). A escolha do melhor modelo s
Pesq. agropec. bras.. Publicado em: 29/08/2019
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3. Association between the clinical severity of oral lichen planus and anti-TPO level in thyroid patients
Abstract This study considered a possible relationship between the severity of oral lichen planus (OLP), serum anti-TPO autoantibodies (TPOAb) titer and thyroid disease in OLP patients. Forty-six OLP patients with positive TPOAb results (> 35 IU/ml) who had also been diagnosed with thyroid disease were included in the study group. The control group consisted
Braz. oral res.. Publicado em: 05/01/2017
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4. Diagnosis of arboviruses using indirect sandwich IgG ELISA in horses from the Brazilian Amazon
Background The Amazon as a whole is the largest reservoir of arboviruses worldwide, while the Brazilian Amazon hosts the largest variety of arboviruses isolated to date. In this study, the results of an indirect sandwich IgG ELISA, standardized for 19 arbovirustypes circulating among horses in Brazilian Amazon, were compared to results of the hemagglutinat
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 02/09/2014
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5. A Common-Feature Approach for Testing Present-Value Restrictions with Financial Data
It is well known that cointegration between the level of two variables (labeled Yt and yt in this paper) is a necessary condition to assess the empirical validity of a present-value model (PV and PVM, respectively, hereafter) linking them. The work on cointegration has been so prevalent that it is often overlooked that another necessary condition for the PVM
Escola de Pós-Graduação em Economia da FGV. Publicado em: 24/02/2012
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6. Asociación de labio y/o paladar hendido con variables de posición socioeconómica: un estudio de casos y controles
OBJECTIVES: to investigate the association between socioeconomic position and the presence of nonsyndromic cleft lip and/or palate (CL/P). METHODS: a case-control study with 110 cases with CL/P matched by age and gender with 220 controls was carried out, the cases were selected from the "Hospital Niño DIF Hidalgo" of Pachuca, Hidalgo, Mexico. A structured q
Revista Brasileira de Saúde Materno Infantil. Publicado em: 2010-09
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7. Modelos univariados e multivariados para cálculo do Valor-em-Risco de um portifólio / Multivariate and Univariate Models for Forecasting a Portfolios Value-at-Risk
The present work consists of a comparative study of several portfolio Value-at-Risk models. Univariate models, which consider only the portfolio log-returns series, are compared to multivariate models, which consider the log-returns series of each asset individually and their conditional correlations. Additionally, recently proposed models such as PS-GARCH a
Publicado em: 2010
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8. Genotypes and clinical data of respiratory syncytial virus and metapneumovirus in brazilian infants: a new perspective
The aim of this study was to determine if there was a correlation between respiratory syncytial virus (RSV) and metapneumovirus (MPV) genotypes and clinical data of Brazilian infants hospitalized for acute lower respiratory infection. The viruses in the patients' nasopharyngeal secretions were studied using the polymerase chain reaction and phylogenetic anal
Brazilian Journal of Infectious Diseases. Publicado em: 2009-02
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9. Estudo comparativo de métodos geoestatísticos de estimativas e simulações estocásticas condicionais / Comparative study of geostatistical estimation methods and conditional stochastic simulations
Different geostatistical methods present themselves as the optimal solution to different realities according to the characteristics displayed by the data in analysis. Some of the most popular estimation methods include ordinary kriging and lognormal ordinary kriging, this last one involving the transformation of data from their original space to a Gaussian d
Publicado em: 2009
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10. Juizados Especiais Federais CÃveis itinerantes em Alagoas: uma nova justiÃa
The objective of this study is to analyse how the Juizados Especiais Federais CÃveis Itinerantes de Alagoas (Itinerating Special Federal Civil Judicial Hearings from the State of Alagoas [AL]), which have taken place in the cities of Palmeira dos Ãndios/AL, Arapiraca/AL, UniÃo dos Palmares/AL, Santana do Ipanema/AL, Penedo/AL and ViÃosa/AL during the per
Publicado em: 2009
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11. Dynamic hedging in markov regimes
This dissertation proposes a bivariate markov switching dynamic conditional correlation model for estimating the optimal hedge ratio between spot and futures contracts. It considers the cointegration between series and allows to capture the leverage e¤ect in return equation. The model is applied using daily data of future and spot prices of Bovespa Index an
Publicado em: 02/10/2008
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12. Modelos de volatilidade estatística
In the financial market usually notices are taken of the shares sequentially over the time in order to characterize them a time series. However, the major interest is to forecast the behavior of these shares. Motivated by this fact, a lot of models were created based on the past information considering constant averages and variance over time. Although, in f
Publicado em: 2008