in quality control charts, the problem of determining the optimum process mean arises when the deviation of a quality characteristic in one direction is more harmful than in the opposite direction. the failure mode in these two directions is usually different. a great majority of researches in this area have considered asymmet-ric cost function for processes with single quality characteristics....

Abstract The objective of this chapter is to introduce the concepts calculated Datapoints and key performance indicators, which form basis statistical process control. In particular, both operate on Datapoints, but them in a different way. Indeed, former transform incoming data static way, i.e., without taking into account its historical values. Contrarily, latter within specified period for fu...

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 ...