August 2004
Intermediate to advanced
656 pages
15h 28m
English
Optimization is useful when the objective function being studied has two or more competing components: One of the components increases as the decision variable increases, whereas the other component decreases. Economic life, discussed in Chapter 11 and repeated in Figure 20.1, is an example of optimization of a cost function.

The decision variable is the length of time to keep the asset. The AE(i) cost of ownership (the CR(i)) decreases the longer the asset is kept, but the AE(i) cost of operation and maintenance increases. Over short ownership times, CR(i) ...
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