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作者：Black, D; Sanders, S; Taylor, L
作者单位：Syracuse University; University System of Maryland; University of Maryland College Park; Carnegie Mellon University
摘要：We examine measurement error in the reporting of higher education in the 1990 Decennial Census and the post-1991 Current Population Survey (CPS). We document that measurement error in the reporting of higher education is prevalent in Census data. Further, these errors violate models of classical measurement error in important ways. The level of education is consistently reported as higher than it is (errors are not mean 0), errors in the reporting of education are correlated with covariates th...
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作者：Huang, Y; Wang, MC
作者单位：Johns Hopkins University; Johns Hopkins Bloomberg School of Public Health
摘要：Recurrent events arise in many longitudinal medical studies where time to a terminal event or failure is the primary endpoint. With incomplete follow-up data, the analysis of recurrent events is a challenge owing to their association with the failure. One specific quantity of interest rarely addressed in the statistical literature is the recurrence frequency at the failure time; an example is hospitalization frequency, which is often used as a rough measure of lifetime medical cost. In this ar...
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作者：Meeden, G
作者单位：University of Minnesota System; University of Minnesota Twin Cities
摘要：Auditors often consider a stratified finite population where each unit is classified as either acceptable or in error. Based on a random sample, the auditor may be required to give an upper confidence bound for the number of units in the population that are in error. In other cases the auditor may need to give a p value for the hypothesis that at least 5% of the units in the population are in error. Frequentist methods for these problems are not straightforward and can be difficult to compute....
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作者：Dette, H; Biedermann, S
作者单位：Ruhr University Bochum
摘要：For the Michaelis-Menten model, we determine designs that maximize the minimum of the D-efficiencies over a certain interval for the nonlinear parameter. The best two point designs can be found explicitly, and a characterization is given when these designs are optimal within the class of all designs. In most cases of practical interest, the determined designs are highly efficient and robust with respect to misspecification of the nonlinear parameter. The results are illustrated and applied in ...
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作者：Kolaczyk, ED
作者单位：Boston University
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作者：Layton, DF; Levine, RA
作者单位：University of Washington; University of Washington Seattle; California State University System; San Diego State University
摘要：How much does the far future matter? This question lies at the heart of many important environmental policy issues, such as global climate change, biodiversity loss, and the disposal of radioactive waste. Although philosophers, experts, and others offer their viewpoints on this deep question, the solution to many environmental problems lies in the willingness of the public to bear significant costs now to make the far future a better place. Short of national plebiscites, the only way to assess...
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作者：Hoeting, JA; Tweedie, RL; Olver, CS
作者单位：Colorado State University System; Colorado State University Fort Collins; Colorado State University System; Colorado State University Fort Collins; University of Minnesota System; University of Minnesota Twin Cities
摘要：We consider multistage development models that occur in the maturation of biological organisms, disease progressions, and industrial processes. The situations that we address are distinguished by the essentially destructive sampling required to assess the stage reached by each individual. We develop robust estimators of stage-dependent maturation rates and overall death rates using method of moments based on Laplace transforms, for which we develop variance estimates under different sampling s...
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作者：Loh, JM; Stein, ML; Quashnock, JM
作者单位：Columbia University; University of Chicago
摘要：Galaxies have long been known to form large clusters, and cosmologists are interested in characterizing this clustering as a way of studying the large-scale structure of the universe. This work is motivated by a data catalog consisting of information on lines of sight from Earth to distant quasi-stellar objects (QSO's) and the carbon iv absorbers that lie on them. The absorbers are believed to be gas clouds near galaxies too far away to be easily observed. Thus, the absorber catalog provides a...
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作者：Shaked, M; Suarez-Llorens, A
作者单位：University of Arizona; Universidad de Cadiz
摘要：In this article we study the comparison of experiments in system reliability theory when the component lifetimes are independent and identically distributed random variables that have a common two-parameter exponential distribution with a location parameter theta. For this purpose, we define a new stochastic order, which we call the convolution order, and study some basic properties of it. We then focus our attention on the family of distribution functions that are mixtures of distributions of...
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作者：Wang, JY; Fuller, WA
作者单位：Merck & Company; Merck & Company USA; Iowa State University
摘要：In the small area estimation literature, the sampling error variances are customarily assumed to be known or to depend on a finite number of parameters. We consider the empirical best linear unbiased predictor (EBLUP) obtained by using the individual directly estimated variance for each small area. An approximation for the mean squared error (MSE) of the EBLUP that recognizes the impact on the predictors of estimation of the variance components is derived. Simulation studies show that the theo...
