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 on the likelihood ratio
test for... 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 developed multivariate T2
control ch... 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 modeling and
forecasting the deter... 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 state of the arts.
Accordingly, sc... 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 process
change point designed for... hiện toàn bộ
A Wiener degradation process with drift‐based approach of determining target reliability index of concrete structures Tập 38 Số 7 - Trang 3710-3725 - 2022
Zhenhao Zhang, Gaoming Liang, Qinglei Niu, Fuming Wang, Jigong Chen, Bing Zhao, Lu Ke
AbstractIn this paper, a novel approach is proposed to determine target
reliability index based on modeling performance degradation of concrete
structures as a stochastic process. First, the Wiener process with drift is used
to simulate the degradation process of relative dynamic elastic modulus of
concrete, and the drift coefficient and diffusion coefficient of Wiener process
are estimated accord... 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
improving the process. Identifyi... hiện toàn bộ