4. A machining center in a job shop for a local fabrication company has five unprocessed jobsremaining at a particular point in time. The jobs are labeled 1, 2, 3, 4,and 5 in the order that theyentered the shop. The respective processing times and due dates are given in the table below.RuleFCFSSPTEDDCRa.Jobnumber Time12I.II.III.IV.Processing34511293112DueDate6145333132Determine the sequence of jobs, the average flow time, average tardiness and averagenumber of jobs at the work center for each of the following rules:FCFSSPTEDDCRSummarize the results for all four scheduling rules in the following table.b. Determine a sequence that will minimize the average tardiness.Average flowtime (days)AverageAverage number of jobs Sequencetardiness (days) at the work-center

Average flow time = Total flow time / number of jobsAverage tardiness = Total tardiness days /…

Answered: . A machining center in a job shop for…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Which job sequence would be used if ordered using the rule "Shortest Job First"? Group of answer choices a. 1,2,3,4 b. 4,3,1,2 c. 2,1,3,4 d. 2,3,4,1 e. 2,3,1,4
A bank's mortgage department must process the following six jobs to maximize client satisfaction. Processing Time (days) Due Date 46 19 77 Mortgage 1 2 17 7 19 13 28 24 39 20 64 What sequencing rule should you use? For the rule you selected, find the best sequence using the Excel Sequencing template. The most appropriate sequence rule is -Select- The best sequence is -Select-- -Select-- 3 4 5 6 -Select- ✓ -Select-- -Select-- -Select-
Consider 8 jobs with processing times, due dates as shown below: Find the optimal sequence using the four sequencing rules; (FIFO, DD, SOT, LIFO). Based on minimizing the jobs average time as well as meeting the deadlines (Due Date) allocated to each job, Explain your final decision. Job(1) Processing time (days) Due Date (days) 1 5 15 2 8 10 3 6 13 4 3 25 5 10 20 619 14 40 7 8 7 3 45 50
As 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.
6. (Ch10) Job A B с D E F Process Time (days) 2 8 4 10 5 12 Due Time (days) 7 16 4 17 15 18 Days Since Arrival 12 9 8 5 3 2 Use the information in the preceding table and sequence the six jobs using FCFS and EDD. The jobs are listed in the order of their arrival. Calculate the average flow time and average past due. It is now time zero.
Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.
1. A production department of a textile firm received six different orders this week. They have calculated the processing time presented as a table (below). They have also put the due dates for each job. Job A с E B D F Process. Time 2 4 5 8 10 12 Due Date 7 4 15 16 17 18 Based on the table please provide four sequences to complete the jobs: a) Using first come first served (FCFS) assuming the letters represent the order they arrive (A first, B next, then C, etc..) b) Using shortest processing time c) Using longest processing time d) Using due dates Calculate "average completion time", "average number of jobs in the system" and "average job lateness" for all the sequences you have generated above.
Given 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)?
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…
If the jobs displayed in Table 18.20 are processed using the earliest-due-date rule, whatwould be the tardiness of job D?
Find the value of X in the following Flow Shop data consisting of 5 jobs which are to be processed on two machines M1 & M2 in that order. Jobs M1 M2 A 3 8 B 12 9 C 11 1 D 6 4 E 10 12 For the sequence using Johnson’s Rule, the Average Flow Time = X
a) Using the FCFS (first come, first served) decision rule for sequencing the jobs, the order is (assume that jobs came in the order in which they are listed in the table): Sequence 1 2 3 4 5 Job A B C D E The average tardiness (job lateness) for the sequence developed using the FCFS rule = days (round your response to two decimal places). The following jobs are waiting to be processed at the same machine center. Jobs are logged as they arrive: Job ABCDE Due Date 315 313 312 325 314 Duration (days) 3 8 16 5 All dates are specified as manufacturing planning calendar days. Assume that all jobs arrive on day 275. Assume each job starts at the beginning of the day and finishes at the end of the day (a job that begins on day 275 and takes 8 days will finish on day 282, and the next job begins in the morning of day 283). Compute all times based on initiating work on day 275.

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