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    Item type:Publication,
    Integrating m-machine scheduling into MRP
    (2010-06-01)
    Masuchun, Ruedee
    ;
    Masuchun, Wiboon
    ;
    Thepmanee, Teerawat
    This paper presents an approach to integrate the m-machine productionscheduling into Material Requirements Planning (MRP). In general, generating MRPconsiders only Bill of Materials (BOM) and, ignores capacity constraints and,operating sequences; therefore, a, production plan is unachievable whenscheduling is actually performed next on shop-floor. That is why recent researchhas focused on executing both MRP and, scheduling simultaneously. Our approachuses an integer linear programming model to plan and, schedule concurrently tolook right through the capacity constraints and, operating sequences. Theobjective function of the proposed, model considers both planning and,scheduling purposes that is to minimize total inventory costs and, order'stardiness. All significant and inevitable concerns when separately generatingMRP and schedule are incorporated, with the model through several constraints.Numerical results show that this model can be used, to simultaneously generatereasonable MRP as well as feasible and, optimal m-machine production schedule.ICIC International © 2010.
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    Item type:Publication,
    Integrating production scheduling and Material Requirements Planning
    (2009-09-01)
    Masuchun, Ruedee
    ;
    Masuchun, Wiboon
    ;
    Thepmanee, Teerawat
    This paper addresses a technique to integrate the production scheduling andMaterial Requirements Planning (MRP). Generally, generating MRP considers onlyBill of Materials (BOM) not capacity constraints and operating sequences leadingto an in-feasible production plan when scheduling is actually performed next onshop-floor. That is why most researchers recently turn attention to executingboth simultaneously. Our technique uses the advantage of an integer linearprogramming model to plan and schedule at once so that the capacity constraintsand operating sequences are not ignored. The objective function of the proposedmodel includes both planning and scheduling purposes that is to minimize totalinventory costs and order's tardiness. Significant and inevitable concerns whenseparately generating MRP and schedule are all included in the model throughseveral constraints. Numerical results verify that this model can be used tosimultaneously generate reasonable MRP as well as feasible and optimal schedule.ICIC International © 2009.