Industrial Engineering and Production Management
Discrepancies of bar chart techniques are

Free time available for an activity can't be predicted
Effective monitoring/controlling can't be done
Consequential effects of lack in one activity on the finish date
All of these

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Industrial Engineering and Production Management
Scheduling

Is concerned with starting of processes
Regulates the progress of job through various processes
Determines the programme for the operations
Prescribes the sequence of operations to be followed

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