Question 1
The emergency room at a hospital estimates the following requirements for registered nurses (RNs) for the late night shift each week. Nurses work four consecutive days, then have off three days.
| Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday |
| 3 | 4 | 2 | 2 | 3 | 6 | 4 |
Perform cyclical scheduling on the data. (Note that you must identify three-day patterns of minimum requirements). How many RNs are required? How much extra capacity is required?
Question 2
Jack's Refrigeration Repair is under contract to repair, recondition, and/or refurbish commercial and industrial icemakers from restaurants, seafood processors, and similar organizations. Jack currently has five jobs to be scheduled, shown in the order in which they arrived.
| Job | Processing Time (hours) | Due (hours) |
| V | 20 | 50 |
| W | 10 | 35 |
| X | 50 | 90 |
| Y | 15 | 35 |
| Z | 55 | 75 |
a. Complete the following table. (Show your supporting calculations below).
b. Which dispatching rule has the best score for flow time?
c. Which dispatching rule has the best score for work-in-process (jobs in the system)?
d. Which dispatching rule has the best score for lateness?
e. What dispatching rule would
you select? Support your decision.
| Dispatching Rule | Job Sequence | Average Flow Time | Average Number of Jobs | Average Lateness |
| FCFS | | | | |
| SPT | | | | |
| EDD | | | | |
| CR | | | | |
Jack Russell Terrier
DNA Excision Repair
In The Gross Clinic (1875), by Thomas Eakins, Professor Samuel Gross’s team of surgeons cuts through
The steps of wound repair.
An agglutination inhibition reaction. Commercial kit materials would create an agglutination ...