Introduction-Objectives of operations Scheduling Some of these objectives conflicts, Reduce WIP inventory Worker idle time may increase or machine utilization may decrease; Reasons:differences in the throughput rate from one part of the system to another may force the faster operations to wait. As an example,if there is no buffer for WIP between 1 and 2, what happens? Input Buffer (work-in-process) Output Fig8-3 A Process Composed of Two Operations in®ies¥克鱼大
Introduction-Objectives of operations Scheduling • Some of these objectives conflicts, Reduce WIP inventory Worker idle time may increase or machine utilization may decrease; Reasons: differences in the throughput rate from one part of the system to another may force the faster operations to wait. Fig 8-3 A Process Composed of Two Operations in Series As an example, if there is no buffer for WIP between 1 and 2, what happens?
Introduction-Objectives of operations Scheduling Some of these objectives conflicts, Finding the proper mix between WIP inventory and worker idle time is equivalent to choosing a point on the trade-off curve of these conflicting objectives. (a) 0000 59 Work-in-process 国上泽充道大多
Introduction-Objectives of operations Scheduling • Some of these objectives conflicts, Finding the proper mix between WIP inventory and worker idle time is equivalent to choosing a point on the trade-off curve of these conflicting objectives
Introduction-Objectives of operations Scheduling Some of these objectives conflicts, A true improvement in the overall system would mean that the entire trade-off curve undergoes a downward shift. 6 Improved system Work-in-process luol sodl to oaqmo W 圆上帝充道大酱
Introduction-Objectives of operations Scheduling • Some of these objectives conflicts, A true improvement in the overall system would mean that the entire trade-off curve undergoes a downward shift