Nowadays, companies that oer product variety while maintaining short lead times and competitive quality and cost, gain a competitive edge over their competitors. Therefore, hybrid push-pull systems allow for efficiently balancing lead times and production costs. Raw materials are `pushed' into the semi-finished good warehouse and customers `pull' products by placing orders. As performance of the decoupling stock is critical to the overall performance of the manufacturing system, we define and analyse a Markovian queueing model with two buers, thereby accounting for both the decoupling stock as well as for possible backlog of orders. In particular, our study assesses the eect of variability in the production process and the ordering process on the performance of the decoupling stock.
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