# Browse by Subject "Statistics"

• (1974)

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• (1991)
A new approach to evaluate the reliability of structural systems using a Monte Carlo variance reduction technique called the Importance Sampling is presented. Since the efficiency of the importance sampling method depends ...

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• (1996)
This study investigated moderated regression analysis using latent variables. Interactive psychological theories, the stress-buffering hypothesis, and interaction in regression and structural equation models, were reviewed. ...

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• (1993)
This thesis examines issues related to Valiant's Probably Approximately Correct (PAC) model for learning from examples. In this model, a student observes examples that consist of sample points drawn according to a fixed, ...

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• (1987)
This thesis deals with the asymptotic behavior of stopping rules ${\rm T\sb{A}}$ and ${\rm T\sb{d}}$ proposed by Martinsek (Ann. Statist., 12 (1984):533-550). The asymptotic normality of these stopping rules, when A tends ...

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• (2005)
Linear mixed models based on the normality assumption are widely used in health related studies. Although the normality assumption leads to simple, mathematically tractable, and powerful tests, violation of the assumption ...

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• (2004)
The reference growth charts are widely used to screen the measurements from an individual subject in the context of population values. The conventional reference growth charts are generated from cross-sectional data and ...

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• (2006)
We illustrate the issues and methodology in the context of an immunogenicity study of measles vaccine for children as well as an ultrasound safety study of the occurrence and extent of lung hemorrhage in laboratory animals ...

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• (2007)
Longitudinal data are characterized by repeated measures over time on each subject. The generalized estimating equations (GEE) approach (Liang and Zeger, 1996) has been widely used for the analysis of longitudinal data. ...

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• (2006)
Marginal maximum likelihood estimation has become the standard for parameter estimation in latent variable models. However, there are instances when alternative estimators that jointly estimate incidental parameters and ...

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• (1991)
Two different methods for comparing alternative mixed models describing the continuous variable underlying all-none response traits were proposed. The first may be viewed as an extension of the analysis of deviance using ...

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• (1989)
This thesis main focus are the robustness properties of the Schwarz Information Criterion (SIC) based on sample objective functions defining (Bias) robust M-estimators. The Bayesian underpinnings of such a criterion are ...

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• (2008)
General computing algorithms are developed in R for the GEE computations and WinBugs to perform Gibbs sampling for the Bayesian analysis. Analyses of randomized controlled longitudinal data and randomized controlled surgical ...

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• (1973)

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• (1980)
It was the purpose of this study, through the use of a Monte Carlo simulation, to investigate the robustness of the analysis of covariance (ANCOVA) model relative to violations of some of the model's assumptions, and to ...

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• (2002)
The proposed multimedia watermarking techniques can be applied to copyright protection, content authentication, and side information delivery in commerce, journalism, security, and law.

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• (1974)

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• (1995)
Unidimensionality is one of the most important assumptions required by much of the currently used item response theory (IRT) methodologies. In the first part of this thesis, a further and non-trivial practical refinement ...

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• (1994)
A new index based on the conditional covariance of item scores given a latent variable is defined and investigated to assess dimensionality in educational and psychological test data. This index successfully detects the ...

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• (1995)
Randles' one sample multivariate sign test based on interdirections is extended to two sample and multisample tests. A heuristic argument suggests that when samples are drawn from elliptically symmetric distributions all ...

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