When using control charts to monitor manufacturing processes, Shewhart control chart is
known to be useful for detecting transient shifts, while the EWMA and CUSUM charts are …

Control charts are statistical methods used to detect shifts in the location parameter of a
process that is monitored over time. Here, we propose an improvement to the performance …

In practice most processes are known to produce autocorrelated observations.
Autocorrelation degrades the performance of control charts by producing frequent false …

The ordinary CUSUM chart is based on normality assumption. But in real-life phenomenon
such as monitoring of lifetime variable, this assumption is not always valid. Hence, a variant …

In this paper, we introduce four different combinations of EWMA schemes, each based on a
single plotting statistic for simultaneous monitoring of the mean and variance of a Gaussian …

The cumulative sum (CUSUM) and exponentially weighted moving average (EWMA) control
charts have been widely accepted because of their fantastic speed in identifying small‐to …

Abstract The Mann–Whitney (MW) test is one of the most important nonparametric tests used
in the comparison of the location parameters of two populations. Unlike the t-test, the MW …

An EWMA scheme with the fast initial response (FIR) feature usually detects an initial out-of-
control (OOC) situation much quicker compared to a standard EWMA scheme. Researches …

Additive manufacturing offers considerable promise in terms of manufacturing flexibility, but
print quality remains a major obstacle to its widespread adoption. Consequently, timely and …

Toxicant testing is a major component of the environmental solution testing program. This
test system aims to evaluate the sensitivity of the test species, evaluate comparability …