Operations and Supply Chain Management 9th edition
9th Edition
ISBN: 9781119320975
Author: Roberta S. Russell, Bernard W. Taylor III
Publisher: WILEY
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Textbook Question
Chapter 17, Problem 16P
Jobs processed through Percy’s machine shop pass through milling first, and then turning. The current backlog of jobs and hours required at each machine follow.
Sequence the jobs so that the entire set of jobs is completed as soon as possible. Make a Gantt chart to map out the
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The day when the order arrived, processing time, and promised due dates are given in the following table. The jobs are listed in the order of arrival.
Develop separate schedules by using the FCFS and EDD rules. Compare the schedules on the basis of average flow time and average past due days. Make a comment.
The following table shows orders to be processed at a machine shop as of 8:00 a.m. Monday. The jobs have different operations they must go through. Processing times are in days. Jobs are listed in order of arrival.
Job Processing
Time (Days) Due Date
(Days) Remaining Number
of Operations
A 8 20 2
B 10 18 4
C 5 25 5
D 11 17 3
E 9 35 4
Click here for the Excel Data File
a. Determine the processing sequence at the first work center using each of these rules: (1) First come, first served, (2) Slack per operation. (Hint: In case of a tie choose the jobs in alphabetical order.)
b. Compute the effectiveness of each rule using each of these measures: (1) average completion time, (2) average number of jobs at the work center. (Round your answers to 2 decimal places.)
Given the following information on job times and due dates, determine the optimal processingsequence using (1) FCFS, (2) SPT, (3) EDD, and (4) CR. For each method, find the average jobflow time and the average job tardiness. Jobs are listed in order of arrival.JobJob Time(hours)Due Date(hours)a 3.5 7b 2.0 6c 4.5 18d 5.0 22e 2.5 4f 6.0 20
Chapter 17 Solutions
Operations and Supply Chain Management 9th edition
Ch. 17 - Scheduling Major League Baseball Umpires It used...Ch. 17 - Scheduling Major League Baseball Umpires It used...Ch. 17 - Solving Tough Scheduling Problems in Healthcare...Ch. 17 - Solving Tough Scheduling Problems in Healthcare...Ch. 17 - Analytics at Airbnb Airbnb is a global community...Ch. 17 - Analytics at Airbnb Airbnb is a global community...Ch. 17 - Analytics at Airbnb Airbnb is a global community...Ch. 17 - Analytics at Airbnb Airbnb is a global community...Ch. 17 - How do scheduling activities differ for projects,...Ch. 17 - Why is scheduling a job shop so difficult?
Ch. 17 - What three functions are typically performed by a...Ch. 17 - Prob. 4QCh. 17 - How can the success of a scheduling system be...Ch. 17 - Describe the process of loading and load leveling....Ch. 17 - What is the purpose of dispatch lists? How are...Ch. 17 - When should the following sequencing rules be...Ch. 17 - Give examples of sequencing rules you use to...Ch. 17 - What information is provided by the critical ratio...Ch. 17 - How are work packages, hot lists, and exception...Ch. 17 - What are Gantt charts, and why are they used so...Ch. 17 - Explain the concept behind input/output control....Ch. 17 - Explain the difference between infinite and finite...Ch. 17 - How does theory of constraints differ from...Ch. 17 - Explain the drum-buffer-rope concept.Ch. 17 - Discuss the similarities and differences between...Ch. 17 - What are some typical issues involved in employee...Ch. 17 - What quantitative techniques are available to help...Ch. 17 - At Valley Hospital, nurses beginning a new shift...Ch. 17 - Valley Hospital (from Problem 17.1) wants to focus...Ch. 17 - Prob. 3PCh. 17 - Sunshine House received a contract this year as a...Ch. 17 - Karina Nieto works for New Products Inc., and one...Ch. 17 - Decenture has four new IT hires available for...Ch. 17 - Blue Jeans Modeling Agency specializes in...Ch. 17 - Evan Schwartz has six jobs wailing to be processed...Ch. 17 - College students always have a lot of work to do,...Ch. 17 - Today is day 4 of the planning cycle. Sequence the...Ch. 17 - Alices Alterations has eight jobs to be completed...Ch. 17 - Jobs A. B, C, and D must be processed through the...Ch. 17 - Sequence the following jobs by (a) SPT, (b) DDATE,...Ch. 17 - Prob. 14PCh. 17 - Claims received by Healthwise Insurance Company...Ch. 17 - Jobs processed through Percys machine shop pass...Ch. 17 - Prob. 17PCh. 17 - Sassy U makes fashion jeans out of a variety of...Ch. 17 - Restore is a small repair shop that makes...Ch. 17 - Precision Painters, Inc., has five house painting...Ch. 17 - Tracy has six chapters on her desk that must be...Ch. 17 - Updike Upholstery cuts and sews fabric for custom...Ch. 17 - The following data have been compiled for an...Ch. 17 - The input/output report for Work Center 6 is as...Ch. 17 - Kim Johnson, R.N., the charge nurse of the...Ch. 17 - Rosemary Hanes needs help in scheduling volunteers...Ch. 17 - Schedule the wail staff at Vincents Restaurant...Ch. 17 - Mr. Baskins, manager of Tom and Jerrys Ice Cream...
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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
- Using the information presented in the following table, identify the processing sequence that wouldresult using (1) FCFS, (2) SPT, (3) EDD, and (4) CR. For each method, determine (1) average jobflow time, (2) average job tardiness, and (3) average number of jobs in the system. Jobs are listedin order of arrival. (Hint: First determine the total job time for each job by computing the total processing time for the job and then adding in the setup time. All times and due dates are in hours.)JobProcessingTime per UnitUnitsper JobSetupTimeDueDatea .14 45 0.7 4b .25 14 0.5 10c .10 18 0.2 12d .25 40 1.0 20e .10 75 0.5 15arrow_forwardUpdike Upholstery cuts and sews fabric for customordered chairs, ottomans, and sofas. Often, the more com-plicated patterns are for the smaller pieces, where cuttingis more time consuming than sewing. Thus, cutting andsewing times vary. Today’s list of jobs, shown below, arefor an important customer who needs them shipped out(in one shipment) as soon as possible. Determine thesequence of jobs that will complete the customer’s orderas quickly as possible, and notify the customer when theorder is expected to ship.arrow_forwardHow do you schedule 100 regular manufacturing employees working four to six-hour shifts and three skilled employees on a typical plant process? Each machine and employee must be scheduled over the day and the standard time for planning is an hour?arrow_forward
- Find the five essential factors that need to be considered when formulating a policy for the scheduling of processes, and list them below.arrow_forwardplease answer within 30 minutes its very urgent.arrow_forwardAs the Cottrell Bicycle Co. of St. Louis completes plans for its new assembly line, it identifies 25 different tasks in the production process. VP of Operations Jonathan Cottrell now faces the job of balancing the line. He lists precedences and provides time estimates for each step based on work- sampling techniques. His goal is to produce 1,000 bicycles per standard 40-hour workweek. Task Time (sec) Immediate Task Time (sec) Immediate Predecessors Predecessors K3 60 E3 109 F3 K4 24 K3 D6 53 F4 K9 27 K3 D7 72 F9, E2, E3 J1 66 K3 D8 78 E3, D6 J2 22 K3 - D9 37 D6 J3 3 C1 78 F7 G4 79 K4, K9 B3 72 D7, D8, D9, C1 G5 29 К9, 1 B5 108 C1 F3 32 12 B7 18 B3 F4 92 J2 A1 52 B5 F7 21 J3 A2 72 B5 F9 126 G4 A3 114 B7, A1, A2 E2 18 G5, F3 a) Balance this operation using shortest operation time rule and compute the efficiency of the line. b) Discuss how this balance could be improved. Is it possible to improve this balance to 100%? O Focus ASUS VivoBookarrow_forward
- Please walk me through each step and the reasoning behind the step I don't understandarrow_forwardAs the Cottrell Bicycle Co. of St. Louis completes plans for its new assembly line, it identifies 25 different tasksin the production process. VP of Operations Jonathan Cottrell now faces the job of balancing the line. He lists precedencesand provides time estimates for each step based on work-sampling techniques. His goal is to produce 1,000 bicycles perstandard 40-hour workweek.Balance this operation using the shortest operation time rule and compute the efficiency of the line.arrow_forwardOPERATION MANAGEMENTarrow_forward
- Five jobs are ready for processing at time zero through a workstation. The details of the processing time and the due date of completion is provided in the following table. According to EDD, what is the optimal sequence? Job Processing Time (days) Due Date A 8 12 B 4 9 IC 3 6 7 E 5 20 a) E-A-B-D-C b) C-B-E-D-A c) A-B-C-D-E d) C-D-B-A-Earrow_forwardgive some explanation on how job set-up time is reduced by executing jobs in batchesarrow_forwardUse Johnson's rule to obtain the optimum sequence of jobprocessing for the following jobs through a two-machine flow shop. Each jobmust follow the sequence of job processing Machine - 1 first, followed byMachine - 2 . All job times listed are in hours. (In Excel with formulas)Job Machine-1 Machine-2A 2.8 4.5B 4 1.7C 2.5 3.3D 5.5 3.7E 4 1.50arrow_forward
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