The Taguchi method is a useful technique to improve the performance of products or processes at a lower cost and in less time. This procedure can be categorized in the static and dynamic quality characteristics. The optimization of multiple responses has received increasing attention over the last few years in many manufacturing organizations.  Several approaches dealing with multiple static q...

Acceptance sampling plan is a method to make decision on either accepting or rejecting a specific lot or more generally to inspect the quality of products that can be used by different methods. Along with this, one suitable measure to improve manufacturing processes is to analyze process capability indices. These indices have many applications in production environments. In this paper, a repeti...

The proportion of zero defect (ZD) outputs is as an integral characteristic a zero-inflated (ZI) process or high quality process. Different ZI processes can almost equally satisfy the same USL number defects but they produce substantially different proportions ZD products. application conventional method for capability evaluation fails to discriminate these because in method, evaluated taking i...

in this study the effect of month, place and different years on the preferencevalue of bromus tomentellus in semi-steppe region was studied. the preferencevalue of the bromus tomentellus was studied in two years and four months in three sites as cheshme anjir (fars), badamstan (zanjan) firuzkuh (tehran). to determine the preferencevalue of species the two methods of as preference index and timi...

Profile is a relationship between a response variable and one or more independent variables which can describe quality of a process or a product. On the other hand, for an in-control process, capability indices are criteria for the process quality improvement that allows to meet customers’ expectations. Despite a considerable number of applications and monitoring methods already proposed for pr...

Rapid technological advancement and implementation of automation computerization in today's manufacturing set up resulted many high quality processes, where defects are rarely observed. There processes two or more types may be generated from different equipment/process problems. The zeroinflated data containing commonly modeled by bivariate zero-inflated (BZI) Poisson distribution. Pal Gauri (2...