Need help with just one question on operations management
10/9/2018 Module 5Suyin Padron
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13.
Student: Suyin Padron Date: 10/9/18
Instructor: Humberto Florez Course: SCM4153 Production and Operations Management
Assignment: Module 5
a) Using the FCFS (first come, first served ) decision rule for sequencing the jobs, the order is (assume that jobs came in the order in which they are listed in the table):
Sequence Job
1 A
2 B
3 C
4 D
5 E
The average tardiness (job lateness) for the sequence developed using the FCFS rule = days (round your response to two decimal places).
The percentage utilization for the sequence developed using the FCFS rule = % (enter your response as a percentage rounded to two decimal places).
b) Using the EDD (earliest due date) decision rule for sequencing the jobs, the order is (to resolve a tie, use the order in which the jobs were received):
Sequence Job
1 (1)
2 (2)
3 (3)
4 (4)
5 (5)
The average tardiness (job lateness) for the sequence developed using the EDD rule = days (round your response to two decimal places).
The percentage utilization for the sequence developed using the EDD rule = % (enter your response as a percentage rounded to two decimal places).
c) Using the SPT (shortest processing time) decision rule for sequencing the jobs, the order is (to resolve a tie, use the order in which the jobs were received):
Sequence Job
1 (6)
The following jobs are waiting to be processed at the same machine center. Jobs are logged as they arrive:
Job Due Date Duration (days) A 314 5 B 315 3 C 313 8 D 312 16 E 325 40
All dates are specified as manufacturing planning calendar days. Assume that all jobs arrive on day . Assume each job starts at the beginning of the day and finishes at the end of the day (a job that begins on day 275 and takes 8 days will finish on day 282, and the next job begins in the morning of day 283). Compute all times based on initiating work on day .
275
275
10/9/2018 Module 5Suyin Padron
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1
2 (7)
3 (8)
4 (9)
5 (10)
The average tardiness (job lateness) for the sequence developed using the SPT rule = days (round your response to two decimal places).
The percentage utilization for the sequence developed using the SPT rule = % (enter your response as a percentage rounded to two decimal places).
d) Using the LPT (longest processing time) decision rule for sequencing the jobs, the order is (to resolve a tie, use the order in which the jobs were received):
Sequence Job
1 (11)
2 (12)
3 (13)
4 (14)
5 (15)
The average tardiness (job lateness) for the sequence developed using the LPT rule = days (round your response to two decimal places).
The percentage utilization for the sequence developed using the LPT rule = % (enter your response as a percentage rounded to two decimal places).
10/9/2018 Module 5Suyin Padron
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(1) D A B C
E (2) C D B E
A (3) D E A C
B (4) A C D B
E (5) C B A D
E
(6) A C B D
E (7) C E B D
A (8) A C D E
B (9) A B E C
D
(10) A B E D
C (11) A E C B
D (12) D B E C
A (13) B A E D
C
(14) D A B C
E (15) E B D A
C