This paper investigates the optimal inventory replenishment policy for an economic production quantity (EPQ) model with backordering, rework and machine breakdown taking place in stock piling time. A prior paper by Chiu has examined the lot-sizing problem on an imperfect quality EPQ model. Due to another reliability factor random machine breakdown seems to be inevitable in most real world manuf...

Does the Golgi self-organize or does it form around an instructive template? Evidence on both sides is piling up, but a definitive conclusion is proving elusive.

This paper develops a method for automatically incorporating variable selection in Fisher’s linear discriminant analysis (LDA). Utilizing the connection of Fisher’s LDA and a generalized eigenvalue problem, our approach applies the method of regularization to obtain sparse linear discriminant vectors, where “sparse” means that the discriminant vectors have only a small number of nonzero compone...