Industrial Engineering and Production Management
String diagram is used

All of these
For checking the relative values of various layouts
When a group of workers are working at a place
Where processes require the operator to be moved from one place to another

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Industrial Engineering and Production Management
PERT

Provides an approach for keeping planning up-to-date
Permits management to foresee quickly the impact of variations from the plan
Provides a way for management to require that planning be done on a uniform and logical basis
All of the listed here

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