Final Exam lecture Notes - ISE-410 Final Exam Lecture Notes...

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ISE-410 Final Exam: Lecture Notes Scheduling : assignment of each operation of each job a release time and a completion time Flow Shop Scheduling : all jobs follow the same sequence o Assembly, repetitive o Theoretical best is prevented by downtime Starvation Blocking o Add buffers/queues to decouple the stages of the flow shop Question is: how much and where do you add it? Job Shop Scheduling : o CNC, automated Important Factors : o Make span: max completion time o Cycle time: flow time o Utilization: useful only if you’re doing it on a bottleneck machine o Meet due dates Is minimizing average lateness = minimizing average tardiness? o NO : negative lateness improves the objective , does nothing for tardiness Minimizing F avg C avg W avg L avg indirectly minimizes WIP o All equivalent objectives EDD : earliest due date o Minimize max L i (lateness) SPT : shortest processing time o Minimize L avg (average lateness) Moore’s Algorithm
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