Use Johnson's Rule to Determine the Optimal Sequencing for the Five

question 8

Essay

Use Johnson's rule to determine the optimal sequencing for the five jobs to be processed on two machines in a fixed order (Machine 1 before Machine 2).The processing times are given in the table below.
a.What is the optimal sequence?
b.What is the total flow time for this sequence?

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Definitions:

Water Seal

Water seal refers to a system used in chest drainage devices that prevents air from re-entering the pleural space while allowing air and fluids to exit, facilitating lung expansion.

Ventilator

A medical device used to assist or take over breathing for a patient who is unable to breathe adequately on their own.

Water-Seal Chamber

A component of chest drainage systems designed to prevent air from re-entering the pleural space while allowing gas and fluid to escape from the chest.

Suction-Control Chamber

Part of a chest drainage system that regulates the negative pressure applied, helping to remove air, fluid, or pus from the thoracic cavity.