Operations Management
13th Edition
ISBN: 9781259667473
Author: William J Stevenson
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 16, Problem 10P
The times required to complete each of eight jobs in a two-machine flow shop are shown in the table that follows. Each job must follow the same sequence, beginning with machine A and moving to machine B.
a. Determine a sequence that will minimize makespan time.
b. Construct a chart of the resulting sequence, and find machine B’s idle time.
For the sequence determined in part a, how much would machine B’s idle time be reduced by splitting the last two jobs in half?
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وبة واضافة هذه القيمة الى القيم
Ex: Assign each job for each worker at minimum total Cost
عمل لكل عامل وبأقل كلفة ممكنة
obs الأعمال
Workors العمال
J1 J2 J3 J4
W₁ 15 13 14 12
W2 11 12 15 13
W3 13 12 10 11
W4 15 17 14 16
The average completion time (flow time) for the sequence developed using the FCFS rule = 11.75 days (round your
response to two decimal places).
The percentage utilization for the sequence developed using the FCFS rule = 42.55 % (enter your response as a
percentage rounded to two decimal places).
b) 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):
An Alabama lumberyard has four jobs on order, as shown in the following table. Today is day 205 on the yard's
schedule. In what sequence would the jobs be ranked according to the decision rules on the left:
Job
Due Date
A
212
B
209
C
208
D
210
Duration (days)
6
3
3
8
Sequence
1
Job
B
2
3
4
A
D
The average tardiness (job lateness) for the sequence developed using the SPT rule = 5.00 days (round your
response to two decimal places).
The average completion time (flow time) for the sequence developed using the SPT rule = 10.25 days…
With the aid of examples, fully discuss any five (5) political tactics used in organisations.
Chapter 16 Solutions
Operations Management
Ch. 16 - Why is scheduling fairly simple for repetitive...Ch. 16 - Prob. 2DRQCh. 16 - What are Gantt charts? How are they used in...Ch. 16 - Prob. 4DRQCh. 16 - Briefly describe each of these priority rules: a....Ch. 16 - Why are priority rules needed?Ch. 16 - What problems not generally found in manufacturing...Ch. 16 - Explain forward and backward schedulings and each...Ch. 16 - Prob. 9DRQCh. 16 - Prob. 10DRQ
Ch. 16 - Prob. 11DRQCh. 16 - What general trade-offs are involved in sequencing...Ch. 16 - Prob. 2TSCh. 16 - Prob. 3TSCh. 16 - One approach that can be effective in reducing the...Ch. 16 - Doctors and dentists offices frequently schedule...Ch. 16 - Prob. 3CTECh. 16 - Use the assignment method to determine the best...Ch. 16 - Rework Problem 1, treating the numbers in the...Ch. 16 - Assign trucks to delivery routes so that total...Ch. 16 - Develop an assignment plan that will minimize...Ch. 16 - Use the assignment method to obtain a plan that...Ch. 16 - The following table contains information...Ch. 16 - Using the information presented in the following...Ch. 16 - The following table shows orders to be processed...Ch. 16 - A wholesale grocery distribution center uses a...Ch. 16 - The times required to complete each of eight jobs...Ch. 16 - Prob. 11PCh. 16 - A shoe repair operation uses a two-step sequence...Ch. 16 - The following schedule was prepared by the...Ch. 16 - The production manager must determine the...Ch. 16 - A foreman has determined processing times at a...Ch. 16 - Given the information in the following table,...Ch. 16 - Given the following information on job times and...Ch. 16 - Prob. 18PCh. 16 - The following table contains order-dependent setup...Ch. 16 - The following table contains order-dependent setup...Ch. 16 - Prob. 21PCh. 16 - Given this information on planned and actual...Ch. 16 - Given the following data on inputs and outputs at...Ch. 16 - Determine the minimum number of workers needed,...Ch. 16 - Determine the minimum number of workers needed,...Ch. 16 - Determine the minimum number of workers needed,...Ch. 16 - Prob. 1CQ
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