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...

In this study, to estimate the process capability index

Process capability of a process is defined as inherent variability of a process which is running under chance cause of variation only. Process capability index is measuring the ability of a process to meet the product specification limit. Generally process capability is measured by 6 assuming that the product characteristic follows Normal distribution. In many practical situations the product ...

Process capability indices show the ability of a process to produce products according to the pre-specified requirements. Since final quality characteristics of a product are usually interrelated to its previous amounts in earlier workstations, one need to model and consider the relationship among them to assess the process ca-pability properly. Hence, conducting process capability analysis in ...