Deferred Time Replacement Decision 延时更新决策
上一节
下一节
Service Period is Unknown
The defender will be replaced sooner or later.
The defender should be kept n years as long as its marginal cost at EOY n is less than the minimum EUAC of best challenger.

Service Period is Known
Grouping defender and challenger together to compare the EUAC of each group.
Service period is an important factor in the Deferred Time Decision to decide the optimal replacement time point of the defender.
Deferred Time Decision can obtain better results than the Real Time Decision.
