A change point method for linear profile data Tập 23 Số 2 - Trang 247-268 - 2007
Mahmoud A. Mahmoud, Peter A. Parker, William H. Woodall, Douglas M. Hawkins
AbstractWe propose a change point approach based on the segmented regression technique for testing the constancy of the regression parameters in a linear profile data set. Each sample collected over time in the historical data set consists of several bivariate observations for which a simple linear regression model is appropriate. The change point approach is based...... hiện toàn bộ Statistical monitoring of nonlinear product and process quality profiles Tập 23 Số 8 - Trang 925-941 - 2007
James D. Williams, William H. Woodall, Jeffrey B. Birch
AbstractIn many quality control applications, use of a single (or several distinct) quality characteristic(s) is insufficient to characterize the quality of a produced item. In an increasing number of cases, a response curve (profile) is required. Such profiles can frequently be modeled using linear or nonlinear regression models. In recent research others have dev...... hiện toàn bộ Predictive condition‐based maintenance for continuously deteriorating systems Tập 23 Số 1 - Trang 71-81 - 2007
Susan Lu, Yiliu Tu, Huitian Lu
AbstractThis paper addresses a predictive condition‐based maintenance approach based on monitoring, modeling, and predicting a system's deterioration. The system's deterioration is considered as a stochastic dynamic process with continuous degrading. Structural time series, coupled with state‐space modeling and Kalman filtering methods, is adopted for recursively m...... hiện toàn bộ Fault tree analysis improvements: A bibliometric analysis and literature review Tập 39 Số 5 - Trang 1639-1659 - 2023
Mohammad Yazdi, Javad Mohammadpour, He Li, Hong‐Zhong Huang, Esmaeil Zarei, Reza Ghasemi Pirbalouti, Sidum Adumene
AbstractFault tree analysis (FTA) is one of the most popular failure analysis techniques that reveal the potential pathways leading to systems or components failure. It has been widely employed in numerous sectors to understand how a system fails and is improved. However, the conventional FTA has been criticized due to a series of inherent shortcomings in the FTA s...... hiện toàn bộ Estimating the Change Point of a Poisson Rate Parameter with a Linear Trend Disturbance Tập 22 Số 4 - Trang 371-384 - 2006
Marcus B. Perry, Joseph J. Pignatiello, James Simpson
AbstractKnowing when a process changed would simplify the search and identification of the special cause. In this paper, we compare the maximum likelihood estimator (MLE) of the process change point designed for linear trends to the MLE of the process change point designed for step changes when a linear trend disturbance is present. We conclude that the MLE of the ...... hiện toàn bộ A clustering approach to identify the time of a step change in Shewhart control charts Tập 24 Số 7 - Trang 765-778 - 2008
Mehdi Ghazanfari, Adel Alaeddini, Seyed Taghi Akhavan Niaki, Mirbahador G. Aryanezhad
AbstractControl charts are the most popular statistical process control tools used to monitor process changes. When a control chart indicates an out‐of‐control signal it means that the process has changed. However, control chart signals do not indicate the real time of process changes, which is essential for identifying and removing assignable causes and ultimately...... hiện toàn bộ