in this paper, first the available single charting methods, which have been proposed to detect simultaneous shifts in a single process mean and variance, are reviewed. then, by designing proper simulation studies these methods are evaluated in terms of in-control and out-ofcontrol average run length criteria (arl). the results of these simulation experiments show that the ewma and ewms methods ...

Methodology is presented for the design of single and double compressed limit Sequential Probability Ratio Tests (SPRT) and Cumulative Sum (CUSUM) control charts to detect one-sided mean shifts in a symmetric probability distribution. We also show how to evaluate the average run length properties with the Fast Initial Response (FIR) feature. The resulting CUSUM plans have a simple scoring proce...

This contribution describes a method for monitoring the condition of young pigs by measuring their water intake. Water flow-meters and micro computers have been installed in 4 production units for young pigs, located on 3 different farms in Denmark. Water consumption data was aggregated into 1 hour intervals. The pigs showed a very stabile diurnal drinking pattern as long as they were healthy w...

quality control plays an important role in increasing the product quality. fuzzy control charts are more sensitive than shewhart control chart. hence, the correct use of fuzzy control chart leads to producing better-quality products. this area is complex because it involves a large scope of industries, and information is not well organized. in this research, we provide a literature review of th...