Operations Management: Processes and Supply Chains (12th Edition) (What's New in Operations Management)
12th Edition
ISBN: 9780134741062
Author: Lee J. Krajewski, Manoj K. Malhotra, Larry P. Ritzman
Publisher: PEARSON
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Textbook Question
Chapter 10, Problem 18P
The Hickory Company manufactures wooden desks. Management
The due dates reflect the need for the order to be at its next operation.
- Develop separate schedules by using the FCFS and EDD rules. Compare the schedules on the basis of average flow time and average past due hours.
- Comment on the performance of the two rules relative to these measures.
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A customer calls requesting that a service technician be sent to her residence immediately to fix her cable box. It is late in the evening, and service technicians cannot be sent out at this time. You see that she has an appointment for a service technician to be sent tomorrow, but she is becoming more upset because she thinks her need is urgent.
The first five columns of the following table contain information about a set of four jobs that just arrived (end of Hour 0 or beginning of Hour 1) at an engine lathe. They are the only ones now waiting to be processed. Several operations, including the one at the engine lathe, remain to be done on each job. Determine the schedule by using (a) the CR rule and (b) the S/RO rule. Compare these schedules to those generated by FCFS, SPT, and EDD.
Job
ProcessingTime at EngineLathe (hours)
TimeRemainingUntil Due Date(days)
Number ofOperationsRemaining
Shop TimeRemaining(days)
CR
S/RO
1
2
3
4
2.3
10.5
6.2
15.6
15
10
20
8
10
2
12
5
6.1
7.8
14.5
10.2
2.46
1.28
1.38
0.78
0.89
1.10
0.46
-0.44
The Hickory Company manufactures wooden desks. Manage-ment schedules overtime every weekend to reduce the backlogon the most popular models. The automatic routing machineis used to cut certain types of edges on the desktops. The fol-lowing orders need to be scheduled for the routing machine:
The due dates reflect the need for the order to be at its nextoperation.a. Develop separate schedules by using the FCFS and EDDrules. Compare the schedules on the basis of average flowtime and average past due hours.b. Comment on the performance of the two rules relative tothese measures
Chapter 10 Solutions
Operations Management: Processes and Supply Chains (12th Edition) (What's New in Operations Management)
Ch. 10 - List the types of costs incurred when employees...Ch. 10 - Prob. 2DQCh. 10 - Prob. 3DQCh. 10 - Explain why management should be concerned about...Ch. 10 - The Barberton Municipal Division of Road...Ch. 10 - Bob Canton’s golf camp estimates the following...Ch. 10 - Prob. 3PCh. 10 - Prob. 4PCh. 10 - Management at the Kerby Corporation has determined...Ch. 10 - Gretchen’s Kitchen is a fast-food restaurant...
Ch. 10 - Prob. 7PCh. 10 - Tax Prep Advisers, Inc. has forecasted the...Ch. 10 - Climate Control, Inc. makes expedition-quality...Ch. 10 - Prob. 11PCh. 10 - Gemini Inc. is using the Sales and Operations...Ch. 10 - Gerald Glynn manages the Michaels Distribution...Ch. 10 - Cara Ryder manages a ski school in a large resort...Ch. 10 - Prob. 15PCh. 10 - Prob. 17PCh. 10 - The Hickory Company manufactures wooden desks....Ch. 10 - Prob. 19PCh. 10 - The Mowry Machine Shop still has five jobs to be...Ch. 10 - If we use the same number of workers in each...Ch. 10 - Prob. 2AMECh. 10 - Prob. 3AMECh. 10 - Suppose the overtime cost is $3,300. What happens...Ch. 10 - Suppose the undertime cost is the same as the...Ch. 10 - Prob. 6AMECh. 10 - Prob. 1VCCh. 10 - Does Starwood employ a chase, level, or mixed...Ch. 10 - How would staffing for the opening of a new hotel...Ch. 10 - Explain the alternatives available to Darlene Fry...Ch. 10 - Prob. 2C
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