Maintaining a stable master production schedule ( M P S is difficult for many firms, especially when material requirements planning is used to manage production operations This paper is concerned with the problem of measuring MPS stability, and the impact on stability of three important decision variables in managing the MF5 within a rolling-horizon Framework in a make-twstock environment: the method used to freeze the MPS, the proportion of the MPS frozen, and the length of the planning horizon for the MPS. Simulation aperiments conducted to determine the impact of these decision variables, as well as other important p d u d denand and cost chamcteristics, on MPS stability arc rrported. The results indicate MPS stability can be influenced by managerial action dimted toward management of the M P S as well as changes in important product cost and requirements characteristics. Subject Arrcrr: Material Rquimnenrr Phnning, Pkrnnhg and Conhol, Production/ Opcmtions Managauent, and ScheduUng.
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