Üretim envanter sistemlerinde ileri talep bilgisi ve kabul kontrolünün etkileri

In this thesis, we concentrate on two aspects of production-inventory systems: advance demand information and admission control. We firstly consider a continuous review, infinite horizon replenishment and admission control model. We propose static and dynamic admission control methods to determine the customer portfolio of the supplier who produces a single product for a single class of customers. The profit function of the supplier is investigated under different parameter settings and the benefits of the dynamic admission control policies are found to be significant. Therefore, we continue our study with dynamic admission control in a periodic-review, infinite horizon model with multiple customer classes and advance orders. We investigate the role of inventory and advance demand information to manage multi-class demand through dynamic admission control policies. The main aim of the latter model is capturing the tradeoffs in a situation where different customers provide different levels of advance demand information. We analyze the model using event-based stochastic dynamic programming and investigate the structure of the optimal replenishment and admission control policies. The numerical results of this model underline the benefits of advance demand information and admission control.