This paper deals with an economic order quantity model where demand is stock
dependent. Items received are not of perfect quality and each lot received
contains percentage defective imperfect quality items, which follow a
probability distribution. Two cases are considered. 1) Imperfect quality
items are held in stock and sold in a single batch after a 100 percent
screening process. 2) A hundred percent screening process is performed but
the imperfect quality items are sold as soon as they are detected.
Approximate optimal solutions are derived in both cases. A numerical example
is provided in order to illustrate the development of the model. Sensitivity
analysis is also presented, indicating the effects of percentage imperfect
quality items on the optimal order quantity and total profit.</jats:p
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