A mathematical model on an economic lot scheduling problem with shifting process and joint material replenishment

This paper focuses on developing a mathematical model for solving the Economic Lot Scheduling Problem (ELSP) under an imperfect (shifting) process that includes joint material replenishment, in-production screening process, imperfect rework process, scraps and shortage. The Common Cycle (CC) approach is applied for the problem formulation. Although this paper only demonstrates the first step, further research works will be on conducting effective problem solving procedures.