The Shewhart X¯- and S-charts are most commonly used for monitoring the process mean variability based on assumption of normality. However, many distributions may follow a positively skewed distribution, such as lognormal distribution. In this study, we discuss construction three combined jointly standard deviation. simulation results show that more effective when distribution is skewed. A real...

We introduce the ε-Gini-contamination multiple priors model in which the set of priors are those probability measures that are ‘close’ to a central P with respect to the relative Gini concentration index. We show that such preferences can be represented by a linear-mean-standard-deviation utility function on a restricted domain. © 2006 Elsevier B.V. All rights reserved.

This paper is an extension of EbayesThresh (the empirical bayesian thresholding method) under assumption of data with homogeneous standard deviation noises described in Johnstone and Silverman (2004)[1]. We ease this restriction, allowing heterogeneous standard deviation of noises, and provide details in estimating the true effects with posterior estimator, e.g. posterior mean or posterior medi...

independence of observations is a fundamental assumption in designing an x chart for individual observations. but unfortunately, the assumption of existence of independent data is not even approximately satisfied. in fact, there is one kind of autocorrelation in the data. this paper demonstrates, through simulating an ar(1) process, that the autocorrelation in the data has deep effect on x char...

The evaluation of multisegment coordination is important in gaining a better understanding of the gait and physical activities in humans. Therefore, this study aims to verify whether the use of knee sleeves affects the coordination of lower-limb segments during level walking and one-leg hopping. Eleven healthy male adults participated in this study. They were asked to walk 10 m on a level groun...

We evaluated the effects of faking on mean scores and correlations with self-reported counterproductive behavior of integrity-related personality items administered in single-stimulus and forced-choice formats. In laboratory studies, we found that respondents instructed to respond as if applying for a job scored higher than when given standard or “straight-take” instructions. The size of the me...