Manufacturing the Future 2012 Part 17

Tham khảo tài liệu 'manufacturing the future 2012 part 17', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Study of Flexibility and Adaptability in Distributed Supply Chains 791 else if It get my inventory ự then . iv exit else lit get supplier inventory if lit Qiow Qhigh . v penalise supplier exit else exit end coordination get supplier s inventory if te Diow Dhigh then It get my inventory if lit Qhigh Iit Qhigh else exit return lit end get supplier s inventory Figure 2. An outline of pseudo code for coordination Source Chan and Chan 2006 Condition i in Fig. 2 constrains the coordination to be taken place only if the due date is within the domain in equation 6 . Condition ii ensures the coordination phase is ended when the upper bound of the due date in equation 6 reaches. In such case outstanding order must be completed. Condition iv makes sure the retailer does have enough inventory if no shipment is made when Dhigh is not reached. Please note that conditions iii and v of the pseudo code allow the supplier to supply with quantity less than the defined domain subject to penalty being incurred if the inventory of the supplier less than the lower bound as stated in equation 5 . This is a constraint relaxation and hence the new domain of Q is effectively become 0 Qiow . any positive integer below Qiow. The reason to accept this argument is to ensure that the mechanism is complete and sound . the algorithm can always returns a solution. Of course both the retailer and the supplier would not like to relax the constraint if 792 Manufacturing the Future Concepts Technologies Visions if possible because both will suffer - the retailer gets less product and the supplier makes a loss due to the penalty. Simulation Results Fig. 3 depicts the percentage improvement of the proposed coordination mechanism with quantity and due date flexibility as compared with the stochastic model in terms of total cost. Positive values mean the proposed coordination mechanism could reduce the total cost as compared with the stochastic counterpart under different settings. Please note .

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