2. The four criteria for determining the effectiveness of a scheduling decision are
Minimize completion time
Minimize work in process
Minimize customer waiting time
3. Loading means the assignment of jobs to work or procession centers. Operations managers assign jobs to work centers so that costs, idle time, or completion times are kept to a minimum. Loading work centers takes two forms. One is oriented to capacity; the second is related to assignment …show more content…
9. When is Johnson’s rule best applied in job-shop scheduling?
Johnson’s rule should be used when sequencing more than one job through two different work stations or machines. Johnson’s rule reduces the time it takes to process of sequencing jobs through two or more work centers. It’s best applied when you have more than one job or machine to complete manufacturing on a product. This system would work well in a manufacturing plant. Johnson’s rule can make companies like Ford and GM better. This rule allows for these companies to make better use of their resources every day. Following this approach will make them more efficient.
10. State the four effectiveness measures for dispatching rules.
First come, first served. This rule helps avoid missed deadlines. It’s pretty simple. The first job to arrive should be processed and completed before the second one is.
Shortest processing time, it’s much more efficient to make the thirty widgets before you work on the masterpiece. Jobs with the shortest time to complete are filled first. This allows you to be much more productive.
Earliest due date, this is a priority driven rule. It’s almost like first com first serve, but a new order can slip in with an earlier due date, and supersede an order that was received earlier. Under EDD, the job with the earliest due date is selected