CCC-r control chart is a monitoring technique for high yield processes. It is based on the analysis of the number of inspected items until observing a specific number of defective items.  One of the assumptions in implementing CCC-r chart that has a significant effect on the design of the control chart is that the inspection is perfect. However, in reality, due to the multiple reasons, the...

Poor oral health has been suggested as a potential risk factor for the occurrence of cardiovascular events. The present study aimed to test hypothesis that number permanent natural teeth (NT) is independently associated with ischemic stroke (IS) or transient attack (TIA) in southern Brazilian population. This case-control enrolled 458 subjects, 229 hospital patients diagnosed IS TIA (cases) and...

The control charts are graphical tools and proven techniques to improve the performance of a process. Usually, the processes are not naturally controlled, so the use of control charts will help to reduce the variability and increase the stability of the process. In the traditional approach, control charts with fix sample size and constant sampling intervals were used to identify the changes in ...

To measure economic profits generated by an insurance policy during its life time, we compare the terminal assets of the policy account with certain breakeven value. Policies with mutil-year loss payments and income tax payments are studied. The breakeven value of terminal assets is given in closed form, and shown to be an increasing function of the claims risk and the asset investment risk. Pr...

Control charts are themost extensively used technique to detect the presence of special cause variations in processes. They can be classified intomemory andmemoryless control charts. Cumulative sum and exponentially weightedmoving average control charts are memory-type control charts as their control structures are developed in such a way that the past information is not ignored as it is done i...