【正文】
vert raw materials into product and place these units into “ Production Delay 2.” Finally, for all players this is the start of the twoweek delay. Step 3. Backorder and inventory costs are calculated. Step 4. Orders are placed. The user indicates the desired order amount. Delays and Order Filling Note that this sequence of events implies several things. First, once an upstream facility fills an order, there is a two period delay before this material can be used to fill a downstream order( 兩周的延遲 ) . Also, there is a one period order delay. This means that if, for example, the retailer places an order for 5 units in this period, the wholesaler does not even attempt to fill the order until next period. This period, the wholesaler attempts to fill the order from the previous period. This can be considered a one period order processing lag. Thus, there is a total of three periods of delays between when a facility places and order, and when the results of that order arrive in inventory. Also, recall that there is no guarantee that an order will be met, even with that three period lag. An upstream supplier can only fill an order if i