Quality Control
Revisiting the one-sided EWMA control chart

Duy Duong-Tran; Romina Dastoorian; Lee Wells

Volume 9, Issue 2 , June 2022, , Pages 151-164

https://doi.org/10.22105/jarie.2021.301378.1369

Abstract
  Exponential Weighted Moving Average (EWMA) control charts have been widely used in Statistical Process Control (SPC) to detect small and persistent process shifts. In theory, EWMA control limits monotonically increase over time to account for the continual growth of the EWMA statistic’s variance. ...  Read More

Statistical Process
Quality improvement of molding machine through statistical process control in plastic industry

Teuku Mirwan Saputra; Hernadewita Hernadewita; Akmal Yudha Prawira Saputra; Lien Herliani Kusumah; Hermiyetti ST

Volume 6, Issue 2 , June 2019, , Pages 87-96

https://doi.org/10.22105/jarie.2019.163584.1068

Abstract
  Enhancing the process capability is a must in quality improvement of process manufacturing in the industry. Usually, Statistical Process Control (SPC) is applied in measure the activity of quality improvement. In this case, the statistical process control used to measure the process capability of molding ...  Read More