Production and Operations Analysis, Seventh Edition
7th Edition
ISBN: 9781478623069
Author: Steven Nahmias, Tava Lennon Olsen
Publisher: Waveland Press, Inc.
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Chapter 9.7, Problem 16P
Summary Introduction
Interpretation: The optimal sequencing of jobs in order to minimize the make span and the make span at the optimal solution is to be determined. Also, a Gantt chart for the solution so derived need to be drawn too.
Concept Introduction: The time difference between the starting and finishing of a sequence of jobs or tasks is referred to as the make span.
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Six jobs are to be processed through a two-stepoperation. The first operation involves sanding, and the second involves painting. Processing times are as follows:
Determine a sequence that will minimize the total completiontime for these jobs. Illustrate graphically.
Three jobs are to be scheduled on two machines A and B. Assume that the jobs are processed in the sequence A-B (A has to finish the job before B can continue the job). The processing times are:
Job
A
B
1
5
4
2
7
7
3
3
5
Draw a Gantt chart that shows the schedule corresponding to the sequence 1-2-3 of the jobs.
Using Johnson's rule for 2-machine scheduling, the sequence is:
Scheduled Order
Job
1
▼
B
C
E
F
A
D
Part 2
2
▼
F
C
A
D
B
E
Part 3
3
▼
A
B
D
F
C
E
Part 4
4
▼
E
D
C
B
F
A
Part 5
5
▼
F
C
D
A
E
B
Part 6
6
▼
D
C
F
B
E
A
Part 7
For the schedule developed using Johnson's rule, the total length of time taken to complete the six jobs (including the 2nd operation) =
enter your response here
hours (enter your response as a whole number).
...
Question content area right
Part 1
Six jobs are to be processed through a two-step operation. The first operation involves sanding, and the second involves painting. Processing times are as follows:
Job
Operation 1 (hours)
Operation 2 (hours)
A
4
8
B
10
5
C
3
11
D…
Chapter 9 Solutions
Production and Operations Analysis, Seventh Edition
Ch. 9.5 - Prob. 1PCh. 9.5 - Prob. 2PCh. 9.5 - Prob. 3PCh. 9.5 - Prob. 4PCh. 9.5 - Prob. 5PCh. 9.6 - Prob. 6PCh. 9.6 - Prob. 7PCh. 9.6 - Prob. 8PCh. 9.6 - Prob. 9PCh. 9.6 - Prob. 10P
Ch. 9.7 - Prob. 11PCh. 9.7 - Prob. 12PCh. 9.7 - Prob. 13PCh. 9.7 - Prob. 14PCh. 9.7 - Prob. 15PCh. 9.7 - Prob. 16PCh. 9.7 - Prob. 17PCh. 9.8 - Prob. 18PCh. 9.8 - Prob. 19PCh. 9.8 - Prob. 20PCh. 9.8 - Prob. 21PCh. 9.8 - Prob. 22PCh. 9.9 - Prob. 23PCh. 9.9 - Prob. 24PCh. 9.9 - Prob. 25PCh. 9.10 - Prob. 27PCh. 9.10 - Prob. 28PCh. 9.10 - Prob. 29PCh. 9 - Prob. 30APCh. 9 - Prob. 31APCh. 9 - Prob. 32APCh. 9 - Prob. 33APCh. 9 - Prob. 34APCh. 9 - Prob. 35APCh. 9 - Prob. 36APCh. 9 - Prob. 37APCh. 9 - Prob. 38APCh. 9 - Prob. 39APCh. 9 - Prob. 40APCh. 9 - Prob. 41APCh. 9 - Prob. 42APCh. 9 - Prob. 43APCh. 9 - Prob. 44APCh. 9 - Prob. 45APCh. 9 - Prob. 46APCh. 9 - Prob. 47AP
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