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 ...

________________________________________________________________________________ Abstract The distribution of chlorocholine chloride (CCC) residue or its metabolites in the meat and eggs of laying hens was studied using the N delta value (δN) and N atom % derived from N-CCC containing diets. In a completely randomised design, 20 laying hens were divided into four groups allocated four different...

Control charts based on time between events (TBE) data have been shown to be useful for monitoring production or failure processes where defect or failure occurrence can be recorded over time. One type of TBE chart is set up with probability control limits, e.g. the Cumulative Quantity Control (CQC) chart and its extension CQC-r chart, which monitors the quantity inspected until the occurrence ...

Objective: To explore how pharmacists integrated the Chat, Check and Chart (CCC) tools in community practice and to identify barriers and facilitators to use. Design: Concurrent nested mixed-method study. Open-ended, semi-structured qualitative interviews on tools use and a quantitative survey were completed via telephone. Setting: Community-based pharmacy practice. Participants: 39 community p...

The distribution of the range of a sample, even in the case of a normal distribution, is not symmetric. Shewhart’s control chart for range and other approximations for range from skewed distributions and long-tailed (leptokurtic) symmetrical distributions assume the distribution of range as symmetric and provide ±3 sigma control limits. We provide accurate approximations for the R-chart control...

BACKGROUND Case conceptualization is assumed to be an important element in cognitive-behavioural therapy (CBT) because it describes and explains clients' presentations in ways that inform intervention. However, we do not have a good measure of competence in CBT case conceptualization that can be used to guide training and elucidate mechanisms. AIMS The current study addresses this gap by desc...

The most popular tool used in the industry for monitoring a process is the Shewhart control chart. The major disadvantage of the Shewhart control chart is that it is not very efficient in detecting small process average shifts. To increase the sensitivity of Shewhart control charts to small shifts additional supplementary runs rules has been suggested. In this paper we introduce and study the m...