Author Question: Jack's Refrigeration Repair is under contract to repair, recondition, and/or refurbish commercial ... (Read 279 times)

jeatrice · **on:** Dec 3, 2019

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

elizabethrperez · **Reply #1 on:** Dec 3, 2019

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