The Shewhart np control chart is often used to monitor the quantity of nonconforming, but it is slow in detecting small deviations. This paper proposes an efficient approach to monitor the quantity of nonconforming. The ...

In this paper, an Economic Production Quantity (EPQ) model is studied, in which the production defective-rate follows either a uniform or a normal probability distribution. Shortages are allowed and take a backorder ...

An electromagnetism algorithm is a meta-heuristic proposed to derive approximate solutions for computationally hard problems. In the literature, several successful applications have been reported for graph-based optimization ...

In many practical situations, the quality of a process or product can be characterized by a function or pro le. Here, we consider a polynomial pro le and investigate the e ect of the violation of a common independence ...

This paper deals with the resource-constrained project scheduling problem with exible work pro les. In this problem, a project contains activities interrelated by nish-start-type precedence constraints with a time lag ...