Journal of Quality Technology - April 2017 - ASQ
Journal of Quality Technology - April 2017
Volume 49 ∙ Number 2
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Two-Level Augmented Definitive Screening Designs
By Abigael C. Nachtsheim, Weijie Shen and Dennis K. J. Lin
The authors provide a comprehensive overview of the augmented designs with DSD structures and show how to construct compromise designs that share the desirable traits of both DSD-augment and ORTH-augment designs.
Multivariate Ordinal Categorical Process Control Based on Log-Linear Modeling
By Junjie Wang, Jian Li, and Qin Su
This paper incorporates the ordinal information into an extended log-linear model and proposes a multivariate ordinal categorical control chart based on a generalized likelihood-ratio test.
Nonparametric Change-Point Detection for Profiles with Binary Data *Open Access*
By Yanfen Shang, Zhiqiong Wand, Zhen He, and Shuguang He
The authors’ proposed method integrates change-point algorithm with the generalized likelihood ratio based on nonparametric regression, which could not only handle the generalized linear or nonlinear profiles, but also detect any types of changes in profiles.
Bayesian Monitoring of Times Between Events: The Shewhart tr-Chart
By Nirpeksh Kumar and Subha Chakraborti
The authors consider the problem of monitoring times between events following an exponential distribution under the Bayesian framework and propose a Bayesian tr -chart when the exponential rate parameter is unknown.
Guaranteed In-Control Performance for the Shewhart X and X-bar Control Charts
By Rob Goedhart, Marit Schoonhoven, and Ronald J. M. M. Does
To prevent low in-control average run lengths, the authors propose new corrections for Shewhart control that guarantee a minimum in-control performance with a specified probability.
Estimating a Service-Life Distribution Based on Production Counts and a Failure Database
By Kenneth J. Ryan, Michael S. Hamada, and Stephen B. Vardeman
The authors employ a Bayesian approach to obtain estimates of model parameters in order to investigate characteristics of the service-life distribution.
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