Industrial Engineering and Production Management
The essential condition for the decompression of an activity is that

An activity could be decompressed to the maximum extent of its normal time
After decompression the time of an activity invariably exceeds its normal time
The project time should change due to decompression
An activity could be decompressed to the maximum extent of its normal time

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Industrial Engineering and Production Management
Micro motion study is

Analysis of a man-work method by using a motion picture camera with a timing device in the field of view
Motion study observed on enhanced time intervals
Study of man and machine conducted simultaneously
Motion study of a sequence of operations conducted systematically

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