Industrial Engineering and Production Management
Expediting function consists in keeping a watch on

Operator's activity
Minimizing the delays
Making efficient dispatching
Flow of material and in case of trouble locate source of trouble

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Industrial Engineering and Production Management
A big advantage of PERT over Gantt charts is that in the former case

Interrelationship among activities is clearly shown
Activities and events are clearly shown
Activity times are clear
Early start and late finish of an activity are clearly marked

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