Practical Operations Management
2nd Edition
ISBN: 9781939297136
Author: Simpson
Publisher: HERCHER PUBLISHING,INCORPORATED
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Chapter 14, Problem 20P
Summary Introduction
Interpretation:
The time when the batch of the baked apple must be scheduled when all the workers orders at the bakery require prep and then baking.
Concept Introduction:
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What is the key distinction between a serial timetable and a schedule that is capable of being serialized?
Three jobs are to be scheduled on two machines A and B. Assume that the jobs are processed in the sequence A-B (A has to finish the job before B can continue the job). The processing times are:
Job
A
B
1
5
4
2
7
7
3
3
5
Draw a Gantt chart that shows the schedule corresponding to the sequence 1-2-3 of the jobs.
Using Johnson's rule for 2-machine scheduling, the sequence is:
Scheduled Order
Job
1
C
2
B
3
E
4
A
5
D
6
F
For the schedule developed using Johnson's rule, the total length of time taken to complete the six jobs (including the 2nd operation) =
nothing
hours (enter your response as a whole number).
Chapter 14 Solutions
Practical Operations Management
Ch. 14 - Prob. 1DQCh. 14 - Prob. 2DQCh. 14 - Prob. 3DQCh. 14 - Prob. 4DQCh. 14 - Prob. 5DQCh. 14 - Prob. 1PCh. 14 - Prob. 2PCh. 14 - Prob. 3PCh. 14 - Prob. 4PCh. 14 - Prob. 6P
Ch. 14 - Prob. 7PCh. 14 - Prob. 8PCh. 14 - Prob. 9PCh. 14 - Prob. 10PCh. 14 - Prob. 11PCh. 14 - Prob. 12PCh. 14 - Prob. 13PCh. 14 - Prob. 14PCh. 14 - Prob. 15PCh. 14 - Prob. 16PCh. 14 - Prob. 17PCh. 14 - Prob. 18PCh. 14 - Prob. 19PCh. 14 - Prob. 20PCh. 14 - Prob. 21PCh. 14 - Prob. 22PCh. 14 - Prob. 23PCh. 14 - Prob. 24PCh. 14 - Prob. 25PCh. 14 - Prob. 26PCh. 14 - Prob. 27PCh. 14 - Prob. 28PCh. 14 - Prob. 29PCh. 14 - Prob. 30PCh. 14 - Prob. 1.1QCh. 14 - Prob. 1.2QCh. 14 - Prob. 1.3QCh. 14 - Prob. 1.4Q
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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
- Classes are scheduled. After students request courses, a programme will determine the optimum schedule. The school thinks it can't find the best schedule soon. Instead, they use a simpler method to construct a reasonable but non-optimal schedule quicker. Which principle does this option demonstrate?arrow_forwardSuppose that 12 jobs must be processed through six machines. If the jobs may beprocessed in any order, how many different possible schedules are there? If youwere to run a computer program that could evaluate 100 schedules every second,how much time would the program require to evaluate all feasible schedules?arrow_forwardFive jobs must be scheduled for batch processing on a mainframe computer system. The processing times and the promised times for each of the jobs are listed here. (given) Assume that the current time is 10:00 A.M.a. If the jobs are scheduled according to SPT, find the tardiness of each job and the mean tardiness of all jobs.b. Repeat the calculation in part (a) for EDD scheduling.arrow_forward
- The following five overhaul jobs a re waiting to be processed at Avianic's Engine Repair Inc. These jobs were logged as they arrived. All dates are specified as planning calendar days.Assume that all jobs arrived on day 180; today's date is 200 Using the critical ratio scheduling rule, in what sequence would the jobs be processed?arrow_forwardFive jobs must be scheduled for batch processing on a mainframe computer system. The processing times and the promised times for each of the jobs are listedhere.Job 1 2 3 4 5Processing time 40 min 2.5 hr 20 min 4 hr 1.5 hrPromised time 11:00 A.M. 2:00 P.M. 2:00 P.M. 1:00 P.M. 4:00 P.M.Assume that the current time is 10:00 A.M.a. If the jobs are scheduled according to SPT, find the tardiness of each job and themean tardiness of all jobs.b. Repeat the calculation in part (a) for EDD schedulingarrow_forwardThe company has received 7 special jobs. These jobs have to go through Process X, Process Y and then Process Z in sequence. Each of the processes is operated by a dedicated machine. What is the optimal sequence to schedule the jobs? Show your steps. If there is more than one optimal sequence under the adapted Johnson’s rule, show them all.arrow_forward
- Priority Scheduling resembles Shortest Job First Scheduling in what ways?arrow_forwardWhich shop-floor scheduling rule would you prefer to apply if you were the leader of the only team of experts charged with defusing several time bombs scattered throughout your building? You can see the bombs; they are Using Software for Short-Term Schedulingof different types. You can tell how long each one will take to defuse. Discuss.arrow_forwardOn Monday morning, Baxter Industries has the following jobs waiting for processing in two departments, milling, and drilling, in that order. Time Required (hours) Job Mill Drill 216 7 11 327 6 10 462 8 4 519 5 8 258 3 5 617 12 15 Develop a minimum makespan schedule using Johnson's rule. The schedule using Johnson's rule is - - - - - . Choose the correct Gantt chart with the minimum makespan schedule. The correct graph is .arrow_forward
- Three jobs are to be scheduled on two machines A & B . Assume that the jobs are processed in the Sequence A-B. The processing times are : The Question is : Draw a Gantt Chart that shows the Schedule Corresponding to the sequences 1-2-3 of the jobs Job A B 1 5 4 2 7 7 3 3 5arrow_forwardThomas has four assignments due in class tomorrow, and his class times are as follows. Class Time Marketing 304 8 am OM 385 10 am Finance 216 2 pm Psychology 4:30 pm Each class lasts one hour, and Thomas has no other classes. It is now midnight, and Thomas estimates that the marketing, OM, finance, and psychology assignments will take him six, three, four, and two hours, respectively. Use the Excel Sequencing template to determine how he should schedule the work. Can he complete all of it on time? (Hint: Using SPT and EDD. First, convert times to due dates past midnight).arrow_forwardResource-limited scheduling: is used to develop the shortest schedule when the quantity of resources is fixed is used to minimize the fluctuations in requirements for resources keeps a project on budget keeps a project within its required completion time a & d above b & d abovearrow_forward
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