Principles Of Operations Management
11th Edition
ISBN: 9780135173930
Author: RENDER, Barry, HEIZER, Jay, Munson, Chuck
Publisher: Pearson,
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Chapter 15, Problem 28P
Summary Introduction
To determine: The order in which the job should be completed if there is one operator for each job.
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Given the following information on job times and due dates.
Job
Job Time(Hours)
Due Date(Hours)
a
3.5
7
b
2.0
6
c
4.5
18
d
5.0
22
e
2.5
4
f
6.0
20
a-1. Determine the optimal processing sequence using (1) First come, first served, (2) Shortest processing time, (3) Earliest due date, and (4) Critical ratio.
Sequence for First come, first served
Sequence for Shortest processing time
Sequence for Earliest due date
Sequence for Critical ratio
a-2. For each method, find the average job flow time and the average job tardiness. (Round your answers to 2 decimal places.)
First Come, FirstServed
Shortest ProcessingTime
Earliest Due Date
Critical Ratio
Average flow time
Average job tardiness
Processing time for eight projects, displayed in the sequence they arrived.
Project
P1
P2
P3
P4
P5
P6
P7
P8
Processing time (hours)
3
1
1
2
9
6
1
1.50
2. Given the projects displayed in table above, if FCFS is used to sequence the jobs, what is the average flow rate of the projects?
Note: Round your answer to 2 decimal places.
3. Given the projects displayed in table above, if FCFS is used to sequence the jobs, what is the average flow time of the projects?
Note: Round your answer to 1 decimal place.
4. Given the projects displayed in table above, if FCFS is used to sequence the jobs, what is the average inventory of the projects?
Note: Use your rounded answers from Parts 2 and 3. Round your answer to 1 decimal place.
5. Given the projects displayed in table above, if SPT is used to sequence the jobs, what is the average flow rate of the projects?
Note: Round your answer to 2 decimal places.
6. Given the projects displayed in table above, if SPT is used to sequence…
The product development group at “Griffin” Company has already worked on new computer software products that has potential to know a large market share. Via an outside source, London Management has learned that a competitor is working to bring a similar product to market. As a result, London's top management increased its pressure on the product development group. Group leaders have turned to CPM / PERT as an aid to scheduling remaining activities before new products can be brought to market. The estimated time of activity in a day is as follows
a.Create the the network if it is accelerated according to the schedule above
b.Find the cost and the duration
c.Determine the path and critical activities
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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- Eight jobs have arrived in the following order: Job Processing Time Due Date 1 7 23 2 3 9 3 5 8 4 2 11 5 6 16 6 9 18 7 14 40 8 4 31 Find and compare the performance measures for the following sequencing rules using the Excel Sequencing template. Round your answers to two decimal places. Process in the order they have arrived Flow Time Lateness Tardiness Averagearrow_forwardGiven the projects displayed in Table 18.21, if FCFS is used to sequence the jobs, whatis the average flow time of the projects (in hours)?arrow_forwardGiven these observed times (in minutes) for four elements of a job, determine the observed time (OT) for each element. Note: The second element only occurs every other cyclearrow_forward
- Currently a company that designs Web sites has six customers in its backlog. The time since the order arrived, processing time, and promised due dates are given in the following table. Job Time Since Order Arrived (days ago) Processing Time (days) Due Date (days from now) A 6 18 48 B 4 22 52 C 1 30 70 D 10 14 28 E 7 12 56 F 5 20 62 Develop a schedule by using the first-come, first-served (FCFS) rule and calculate the average flow time and average days past due for the schedule. Develop a schedule by using the earliest due date (EDD) rule and calculate the average flow time and average days past due for the schedule. Comment on the performance of the FCFS and EDD rules relative to average flow time and average days past due.arrow_forwardAssume the jobs displayed in Table 18.22 need to be processed on a single resource andare sequenced with the WSPT rule. What is the average flow rate of the jobs (in jobs perminute)?arrow_forwardThe product development group at “Griffin” Company has already worked on new computer software products that has potential to know a large market share. Via an outside source, London Management has learned that a competitor is working to bring a similar product to market. As a result, London's top management increased its pressure on the product development group. Group leaders have turned to CPM / PERT as an aid to scheduling remaining activities before new products can be brought to market. The estimated time of activity in a day is as follows Question: Create an initial network Find the cost and the duration Determine the path and critical activitiesarrow_forward
- The times required to complete each of eight jobs in a two-machine flow shop are shown in thetable 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. c. For the sequence determined in part a, how much would machine B’s idle time be reduced bysplitting the last two jobs in half?TIME (hours)Job Machine A Machine Ba 16 5b 3 13c 9 6d 8 7e 2 14f 12 4g 18 14h 20 11arrow_forwardGiven the following data for the processing time in hours for each Job in eachMachine, determine the following:a. Optimal job flow sequenceb. Total span time and idle timeNeed answer asap. Please include the solution/computation. Thank you.arrow_forwardGiven the projects displayed in Table 18.21, if SPT is used to sequence the jobs, what isthe average flow time of the projects (in hours)?arrow_forward
- The following five jobs, along with their processing time and due dates, are given below. Processing Days Due Job Time (days) From Today A 8 12 B 4 9 C 3 6 D 7 7 E 5 20 a. Use the Shortest Processing Time Rule (SPT), determine new sequence and determine the average flow-time for the five jobs b. Use the Earliest Due Date Rule (EDD), determine new sequence, and determine the average tardiness.arrow_forwardGlaudious is 45 years old university internship coordinator. He is handling 80 interns and he would like to perform the following tasks in an easy and fast way. He also encountered an accident a year ago which caused his right leg to have a bone minor fracture which caused him to limit the place he can go. He would like that he can perform the tasks anytime and anywhere. Below are the tasks of Prof Glaudios. 1) He registers the students undergoing internship, this includes the term in a schoolyear, the company name where the student is undergoing internship, directsupervisor of the intern, start of duty, Number of Hours of duty per day, andthe Job of the student-intern in the company. 2) He will also view the following: a) Individual internship record in a term-sem-school year b) Interns details in a company using the Professor Glaudious Scenario, provide the requirements specification: a. Functional b. Data c. Environmental d. User e. Usabilityarrow_forwardGlaudious is 45 years old university internship coordinator. He is handling 80 interns and he would like to perform the following tasks in an easy and fast way. He also encountered an accident a year ago which caused his right leg to have a bone minor fracture which caused him to limit the place he can go. He would like that he can perform the tasks anytime and anywhere. Below are the tasks of Prof Glaudios. 1) He registers the students undergoing internship, this includes the term in a schoolyear, the company name where the student is undergoing internship, directsupervisor of the intern, start of duty, Number of Hours of duty per day, andthe Job of the student-intern in the company. 2) He will also view the following: a) Individual internship record in a term-sem-school year b) Interns details in a company Based on the scenario above, model the tasks of Prof Glaudious by creating a Task Analysis.arrow_forward
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