Sharif University of Technology Scientia Iranica 1026-3098 24 5 2017 10 01 A simple solution procedure to solve the multi-delivery policy into economic production lot size problem with partial rework 2640 2644 4484 10.24200/sci.2017.4484 EN Kun-Jen Chung College of Business, Chung Yuan Christian University, Chung Li, Taiwan, R. O. C. Pin-Shou Ting Department of International Business Management, Shih Chien University, Taipei, Taiwan, R. O. C Leopoldo Eduardo Cárdenas-Barrón School of Engineering and Sciences, Tecnológico de Monterrey. Ave. Eugenio Garza Sada 2501 Sur, C.P. 64849, Monterrey, Nuevo León, México Journal Article 2015 01 16 Recently, an alternative multi-delivery policy into imperfect economic production quantity (EPQ) inventory model with partial rework has been proposed, which considers the number of shipments a fixed and given value. This paper, treating the long-run average costs per unit time as a function of the replenishment lot size  and the number of shipments , adopts the differential calculus approach to get the optimal solution of  and  jointly. In numerical examples, it is illustrated that the solution procedure is simple and accurate.<br />   https://scientiairanica.sharif.edu/article_4484_3bfe392c8e39740d589db23cf1b2f36d.pdf