Control charts based on geometric distribution have shown to be useful when this is a better approximation of the underlying distribution than the Poisson distribution. The traditional c ‐chart, if used, will cause too many false alarms. It is noted that for geometric distribution, the control...

Traditional attribute control charts are based on the monitoring of the number of nonconforming items in a sample of fixed size. In modern manufacturing processes, since items can be checked automatically, use of samples of a fixed subjective size with traditional charts is not suitable for...

Ever since the Malcolm Baldrige National Quality Award (MBNQA) was established in 1987, many other countries have developed their own version of a national quality award (NQA). These NQAs tend to follow the general framework of the MBNQA with different emphases on criteria items such as...

When objective decisions are to be made, statistical methods should be used based on any objective information in the form of data collected about a product or process. Statistical techniques such as control charts, process capability indices and design of experiments have been used in the...

Hydrogen is defined as an attractive energy carrier due to its potentially higher energy efficiency and low generation of pollutants, which can replace conventional fossil fuels in the future. The governments have invested huge funds and made great efforts on the research of hydrogen production....