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When she traveled, she draped lengths of Thai silk in her hotel rooms and ordered quantities of flowers.
Thus, we can compute optimal ordered quantities for any finite number of consecutive periods without computing them for the rest of the time horizon of the model.
The SI report says Singh ordered quantities of the spray last November and quotes the three-time major champion claiming he takes it: "Every couple of hours, every day".
Constraint (4) ensures that ordered quantities are non-negative and (together with the assumption on the order of using parts of a stock and the assumption on x 1) that in each period a firm purchases only an amount of the input that can be used before its durability expires.
Furthermore, even in the stochastic case, the model predictive control method can give ex ante suboptimal results if a finite horizon problem starting in period t has a time horizon too short for computing ordered quantities in all periods t,…,r t. (Compare the last sentence in the first paragraph of Remark 5).
Then we end the current iteration (as in the deterministic case) when ordered quantities in periods t,…,r t are determined, we order in each period k∈{t,…, min{r t,τ−1}} computed quantity (q_{k}^{ast }), and we start a new iteration in period j, which is the first period after min{r t,τ−1}, in which demand is not covered by the order in any of the periods t,…, min{r t,τ−1}.
Similar(52)
Based on its structural properties, we disclose the optimality conditions for the backlogging and ordering quantities.
The ordering quantity per cycle.
Economic ordering quantity, EPQ, the optimum cycle length and the optimum total cost all were determined.
Constraint 30 ensures that reordering point of a retailer must be smaller than ordering quantity.
Chang et al. (2003) developed an EOQ model for deteriorating items under supplier credits linked to ordering quantity.
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