Principles Of Operations Management
11th Edition
ISBN: 9780135173930
Author: RENDER, Barry, HEIZER, Jay, Munson, Chuck
Publisher: Pearson,
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Chapter 15, Problem 2DQ
Summary Introduction
To determine: The four criteria for
Introduction: Scheduling is the process of controlling and arranging the workloads of the production process using an optimized method. It is used to plan and allocate human resources and machinery.
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Question 1
The longest time period you can go without updating a schedule is no more than 3
weeks.
True
False
Question 2 0
Network Loop is the process by which relationships between activities are created.
Activities are linked finish-to-start start-to-start, finish -to -finish, or start-to-finish
and can include lag or lead times.
True
False
Question 3
A constraint is a restriction imposed on the start date, finish date or other aspect of
an activity. Constraints are used to prescribe limitations on the schedule based on
external conditions such as contractual restrictions or imposed float requirements.
True
False
QUESTION 4 (SCHEDULING: JOHNSON'S RULE)
The following schedule was prepared by the production manager of Marymount Metal Shop:
Determine a schedule that will result in the earliest completion of all jobs on this list.
CUTTING
POLISHING
Job
ABCDEFG
(ii)
(iii)
(iv)
Start
0
2
6
11
15
17
20
Finish
2
6
11
15
17
20
21
Start
2615232
11
20
24
Finish
5
9
13
20
23
24
28
What is the optimal sequence?
Draw the time-phased chart.
What is the total completion time?
What is the total idle time at Polishing work centre?
Q4
An arsenal has six tasks waiting to be processed and the processing time and due
completion time for each task is shown in the table below. Assuming that the tasks given
are in the order of the table:
Mission
A
B
CA
D<
E
F
Processing time
(days)<
6
12<
14
24
10<
4
Due for completion
(days)<
22<
14
30
184
25
34<
Requirements
1. Sort the jobs according to the first come first served rule and the shortest processing
time rule and calculate the average completion time, average number of jobs in the
system, average delay time and equipment utilization respectively and explain which is
the better sorting method.
Chapter 15 Solutions
Principles Of Operations Management
Ch. 15 - Prob. 1EDCh. 15 - Prob. 1DQCh. 15 - Prob. 2DQCh. 15 - Prob. 3DQCh. 15 - Prob. 4DQCh. 15 - Prob. 5DQCh. 15 - Prob. 6DQCh. 15 - Prob. 7DQCh. 15 - Prob. 8DQCh. 15 - Prob. 9DQ
Ch. 15 - Prob. 10DQCh. 15 - Prob. 11DQCh. 15 - Prob. 12DQCh. 15 - Prob. 13DQCh. 15 - Prob. 1PCh. 15 - Prob. 2PCh. 15 - Prob. 3PCh. 15 - Prob. 4PCh. 15 - Prob. 5PCh. 15 - Prob. 6PCh. 15 - Prob. 7PCh. 15 - Prob. 8PCh. 15 - Prob. 9PCh. 15 - Prob. 10PCh. 15 - Prob. 11PCh. 15 - Prob. 12PCh. 15 - Prob. 13PCh. 15 - Prob. 14PCh. 15 - Prob. 15PCh. 15 - Prob. 16PCh. 15 - Prob. 17PCh. 15 - Prob. 18PCh. 15 - Prob. 19PCh. 15 - Prob. 20PCh. 15 - Prob. 21PCh. 15 - Prob. 22PCh. 15 - Prob. 23PCh. 15 - Prob. 24PCh. 15 - Prob. 25PCh. 15 - Prob. 26PCh. 15 - Prob. 27PCh. 15 - Prob. 28PCh. 15 - Daniels Barber Shop at Newark Airport is open 7...Ch. 15 - Given the following demand for waiters and...Ch. 15 - Prob. 1CSCh. 15 - Prob. 2CSCh. 15 - Prob. 3CSCh. 15 - Prob. 4CSCh. 15 - Prob. 1.1VCCh. 15 - Prob. 1.2VCCh. 15 - Prob. 1.3VCCh. 15 - Prob. 2.1VCCh. 15 - Prob. 2.2VCCh. 15 - Why is seniority important in scheduling servers?Ch. 15 - Prob. 2.4VC
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