Compare and contrast the advantages and disadvantages of the shortest processing time (SPT) and the earliest due date (EDD) sequencing rules
The shortest processing time (SPT) and earliest due date (EDD) rules generally work well in the short term, but in most situations, new orders and jobs arrive intermittently, and the schedule must accommodate them. The SPT rule tends to minimize average flow time and work-in-process (WIP) inventory, and maximize resource utilization. The EDD rule minimizes the maximum of jobs past due but doesn't perform well on average flow time, WIP inventory, or resource utilization. If SPT were used in a dynamic environment, a job with a large processing time might never get processed. In this case, some time-based exception rule, (such as "If a job waits more than 40 hours, schedule it next") must be used to avoid this problem.
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a. a congressional-executive agreement. b. an executory agreement. c. a sole-executive agreement. d. None of the above
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