Total quality management and quality engineering
1. A note on the generalized indices of process capability

S. Kumar Gauri; S. Pal

Volume 9, Issue 3 , Summer 2020, , Pages 286-303

http://dx.doi.org/10.22105/riej.2020.237520.1137

Abstract
  Process capability indices are widely used to assess whether the outputs of an in-control process meet the specifications. The commonly used indices are , , and . In most applications, the quality characteristics are assumed to follow normal distribution. But, in practice, many quality characteristics, ...  Read More

2. A New Estimator Based on Likelihood Function for Drift Time of Change in Poisson Rate Parameter

R. Hosseiny; V. Amirzadeh; M. A. Yaghoobi

Volume 3, Issue 1 , Spring 2014, , Pages 26-38

Abstract
  Although a control chart can signal an out-of-control state in a process, but it does not always indicate when the process change has begun. Identifying the real time of the change in the process, called the change point, is very important for eliminating the source(s) of the change and assists process ...  Read More