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Orders are placed at every demand epoch so as to take the inventory position back to its maximum level.
Furthermore, we show that by implementing a proportional intergral or a cascade inventory position control and properly synthesizing the controller parameters, we can effectively suppress the bullwhip effect.
In the decentralized control strategy, a MPC-EPSAC (Extended Prediction Self-Adaptive Control) approach is used to predict the changes in the inventory position levels.
Because these controllers do not have information about inventory position or order quantities at other stages, the safety stock tends to be higher, leading to higher inventories and cost.
Usually each manufacturing stage in a supply chain makes its own decision regarding quantity and timing of parts it purchases from its suppliers, thereby controlling its inventory position and overall supply chain dynamics.
A closed-form solution of an optimal ordering decision for each echelon is obtained by locally minimizing a cost function, which consists of the errors between predicted inventory position levels and their setpoints, and a weighting function that penalizes orders.
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We design effective heuristics for inventory positioning, order sequencing, and short and reliable due-date quotation for this supply chain.
His current research is focused on operational issues arising in online retailing, supply chain optimization and strategic inventory positioning, and production and capacity planning for various contexts.
Also, the markets are less able to absorb changes of investor views.Because of balance sheet concerns and regulatory pressure, banks are less able to take on big inventory positions to buffer flows even when prices look attractive.
In response, the Financial Industry Regulatory Authority ("FINRA") has been taking steps to impose new requirements that will impact many broker-dealers, especially those that hold inventory positions or that clear and carry customer transactions.
In this research, centralized and decentralized model predictive control strategies are applied to control inventory positions and to reduce the bullwhip effect in a benchmark four-echelon supply chain.
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