Results 11 to 20 of about 298,220 (292)
Covariate Order Tests for Covariate Effect [PDF]
Lifetime Data Analysis, 2002 A new approach for constructing tests for association between a random right censored life time variable and a covariate is proposed. The basic idea is to first arrange the observations in increasing order of the covariate and then base the test on a certain point process defined by the observation times.
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Pesquisa Agropecuária Brasileira, 2009 O objetivo deste trabalho foi estudar diferentes covariáveis de competição em análises de vizinhança, e verificar sua eficiência no aumento da precisão experimental e as consequências no ordenamento de genótipos de cana-de-açúcar em termos de potencial ...
Liliam Silvia Candido +3 more
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Finitely additive functions in measure theory and applications [PDF]
Opuscula MathematicaIn this paper, we consider, and make precise, a certain extension of the Radon-Nikodym derivative operator, to functions which are additive, but not necessarily sigma-additive, on a subset of a given sigma-algebra.
Daniel Alpay, Palle Jorgensen
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Covariate Assisted Principal Regression for Covariance Matrix Outcomes [PDF]
Biostatistics, 2018 AbstractModeling variances in data has been an important topic in many fields, including in financial and neuroimaging analysis. We consider the problem of regressing covariance matrices on a vector covariates, collected from each observational unit. The main aim is to uncover the variation in the covariance matrices across units that are explained by ...
Zhao, Yi +4 more
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Geodesy and Cartography, 2012 Research demonstrates the accuracy of pseudo distance measurements evaluating the impact of the refraction index and spread speed of vibrations in the vacuum.
Jonas Skeivalas
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Ecology and Evolution, 2020 Theoretical studies suggest that temporal covariation among and temporal autocorrelation within demographic rates are important features of population dynamics.
Rémi Fay +4 more
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Review on Efficiency and Anomalies in Stock Markets
Economies, 2020 The efficient-market hypothesis (EMH) is one of the most important economic and financial hypotheses that have been tested over the past century. Due to many abnormal phenomena and conflicting evidence, otherwise known as anomalies against EMH, some ...
Kai-Yin Woo +3 more
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Modelowanie kowariancji kursów walutowych z zastosowaniem cen minimalnych i maksymalnych
Problemy Zarządzania, 2019 The article presents a proposal for exchange rate modelling by means of minimum and maximum prices that enables a better description of dependencies in the foreign exchange market.
Piotr Fiszeder
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THE CO-MOVEMENT CONNECTION BETWEEN THE GDP AND THE MAIN STOCK MARKET INDEX. THE CASES OF USA AND ROMANIA [PDF]
Analele Universităţii Constantin Brâncuşi din Târgu Jiu : Seria Economie, 2015 A recurring problem among economists is that of the connection supposed to exist between the Gross Domestic Product and the main stock market index. Several studies have been conducted, trying to analyze the existence and the extent of this connection,
IOAN ROXANA
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Analysis of epistasis: A genetic model for triploid endosperm traits
浙江大学学报. 农业与生命科学版, 2007 A genetic model for triploid endosperm traits was proposed on the basis of diallel cross system to analyze additive by additive epistasis of direct effect (AA) and maternal effect (AmAm) along with direct additive effect, dominance effect, cytoplasm ...
CHENG Jun-qi +3 more
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