One of the basic assumptions of the classical dynamic lot-sizing model is that the aggregate demand of a given period must be satisfied in that period. Under this assumption, if backlogging is not allowed then the demand of a given period cannot be delivered earlier or later than the period. If backlogging is allowed, the demand of a given period cannot be delivered earlier than the period, but...

In this study, a two-echelon supplier-manufacturer system with finite production rate and lead time is proposed. It is assumed that shortage is not permitted and the lot size of manufacturer (second echelon) is m-factors of the lot size of supplier (first echelon) and supplier can supply the manufacturer’s lot size in several shipments in each cyc...

In many manufacturing problems, multi-objective optimizations are representative models, as objectives considered a conflict with one another. real-life applications, optimizing specific solution concerning objective may end up in unacceptable results the other objectives. Many Manufacturing companies operate under uncertainties and this affects system performance. Stochastic product demand is ...