Bàn tay người

Hãy cẩn thận với bàn tay của bạn

Đây chính là lý do tại sao bạn cần rửa tay thật sạch!

Nhận xét

Đăng nhận xét

Bài đăng phổ biến từ blog này

Các chỉ số năng lực quá trình: Cp, Cpk, Pp, Ppk - Ý nghĩa và cách thức sử dụng

Hình ảnh
For many years industries have used Cp, Cpk, Pp and Ppk as statistical measures of process quality capability. Some segments in manufacturing have specified minimal requirements for these parameters, even for some of their key documents, such as advanced product quality planning and ISO/TS-16949. Six Sigma, however, suggests a different evaluation of process capability by measuring against a sigma level, also known as sigma capability. Incorporating metrics that differ from traditional ones may lead some companies to wonder about the necessity and adaptation of these metrics. It is important to emphasize that traditional capability studies as well as the use of sigma capability measures carry a similar purpose. Once the process is under statistical control and showing only normal causes, it is predictable. This is when it becomes interesting for companies to predict the current process’s probability of meeting customer specifications or requirements. Capability Studies Traditional...
Read more »