The measurement of the process capability is a key part quantitative quality control, and indices are statistical measures capability. Six Sigma level represents maximum achievable capability, many enterprises have implemented improvement strategies. In recent years, studies investigated indices, including Qpk. However, Qpk contains two unknown parameters, namely δ γ, which difficult to use in ...

abstract background: today, the rate of surgeries is increasing, but surgeries are canceled due to various reasons. unexpected cancellation of surgeries not only results in disorder in the operating room schedule, but also causes stress for patients and their family and increases costs. we determined the number and causes of surgery cancellations and areas for improvement. materials and methods...

Six sigma has long been used as an effective way to restructure a company’s management process. A number of successful cases have been reported of six-sigma-based management activities dramatically enhancing a company’s strategic performance over study periods of several years. However, while there are abundant case studies in the literature regarding six sigma, there is a lack of empirical stu...

The transition to digital manufacturing has become more important as the quantity and quality of use computer systems in companies increased. It necessary model, simulate analyse all machines, tools, raw materials optimise process. is even better determine best possible solution at stage defining process by using technologies that data from simulations calculate an optimal design before it buil...