a. Determine a sequence that will minimize makespan time.
Q: Job 1 4 7 8 Processing Time 9 5 4 5 3 Due Date 4 21 22 12 13 12 34 36 Processing time and due date…
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Q: Job 1 2 3 4 7 8 Processing Time 3 6. 4 5 2 3 Due Date 4 21 22 12 13 12 34 36 Processing time and due…
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A: SPT based processing time can be depicted as follows:
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A: we'll answer the first question since the exact one wasn't specified. please submit a new question…
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- 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. Job A B Processing Time (days) I5 Due Date 11 6 3 16 19 10 D E 15 Using the earliest due date (EDD) rule, the average lateness for the five jobs is decimal place. Round your answer to one Your Answer: AnswerFive customers brought in computers to be repaired to a small shop. Estimated repair times (in days) and dates promised are given below. Due dates were set based on available technicians; however, one technician had a medical emergency and will be unavailable for at least two weeks so processing times were adjusted. Customer job 1 Processing time (days) Due date (days) 6 Use the EDD rule and compute the start time, flow time, lateness, and tardiness for each job. Use minus sign to enter negative lateness values, if any. If your answer is zero, enter "0". Sequence Start Time, days Flow Time, days Lateness, days Tardiness, days -Select- -Select- -Sclect. -Select- -Select- UI 5 LI TE 10 MAThe 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 11
- The following jobs are waiting to be processed at thesame machine center. Jobs are logged as they arrive:JOB DUE DATE DURATION (DAYS)A 313 8B 312 16C 325 40D 314 5E 314 3 In what sequence would the jobs be ranked according to the follow-ing decision rules: (a) FCFS, (b) EDD, (c) SPT, and (d) LPT? All dates are specified as manufacturing planning calendar days. Assumethat all jobs arrive on day 275. Which decision is best and why?The following jobs are waiting to be processed at JulieMorel’s machine center:JOB DATE ORDER RECEIVED PRODUCTIONDAYS NEEDED DATE ORDER DUEA 110 20 180B 120 30 200C 122 10 175D 125 16 230E 130 18 210 In what sequence would the jobs be ranked according to the fol-lowing rules: (a) FCFS, (b) EDD, (c) SPT, and (d) LPT? All dates are according to shop calendar days. Today on the planning cal-endar is day 130, and none of the jobs have been started or sched-uled. Which rule is best?K Courtney is a programmer receiving requests each week to analyze a large data base. Five jobs were on her desk Monday morning, and she must decide in what order to write the code. Assume that all jobs arrived today (day 1 and hour 1), in the order shown below. Courtney has assigned the number of hours required to do the coding as noted. Note that Courtney works an 8-hour day and today is a work day. JOB A C D E DUE DATE (HOURS HENCE) 10 16 14 36 26 DURATION (HOURS REQUIRED) 6 3758 a) Sequence the jobs according to EDD. According to the EDD rule, the sequence of jobs should be A, C, B, E, D b) What is the average completion (flow) time? The average completion (flow) time is days (round your response to one decimal place).
- The following six jobs are to be scheduled on a single machine: Job 1 2 3 Processing time 70 160 220 (min.) a. Suppose the jobs are processed in FCFS numerical order. Compute the makespan, flow time for each job, and overall average flow time. Round your answers to the nearest whole number. Job Flow Time (min) 1 2 3 st 4 5 6 4 5 6 90 130 110 minutes Makespan: Average flow time: minutes b. In what order would the jobs be processed using the SPT rule? The SPT sequence is -Select- -Select- -Select-- -Select- ✓ -Select- -Select- Compute the average flow time after each job is completed. Round your answer to the nearest whole number. Average flow time: minutesThe following jobs are waiting to be processed atJulie Morel’s machine center: In what sequence would the jobs be ranked according to thefollowing rules: (a) FCFS, (b) EDD, (c) SPT, and (d) LPT?All dates are according to shop calendar days. Today on theplanning calendar is day 130, and none of the jobs have beenstarted or scheduled. Which rule is best?I only need help with question 4, but question 3 explains how to do 4 but I'm lost. I already have question 3 done. 3. Sequence the jobs shown below by using a Gantt chart. Assume that the move time between machines is one hour. Sequence the jobs in priority order 1, 2, 3, 4. Job Work Center/Machine Hours Due Date (days) Job 1 A/3, B/2, C/2 Job 2 C/2, A/4 Job 3 B/6, A/1, C/3 Job 4 C/4, A/1, B/2 a. What is the makespan? b. How much machine idle time is there? c. When is each job delivered compared with its due date? d. How much idle time (waiting time) is there for each job? e. Devise a better job sequence for processing. 4. In problem 3, assume there are two machines of type A, two of type B, and two of type C. a. Prepare a finite capacity schedule. b. Compare the FCS to the Gantt chart in problem 3.
- Courtney is a programmer receiving requests each week to analyze a large data base. Five jobs were on her desk Monday morning, and she must decide in what order to write the code Assume that all jobs arrived today (day 1 and hour 1), in the order shown below. Courtney has assigned the number of hours required to do the coding as noted. Note that Courtney works an 8-hour day and today is a work day. DURATION (HOURS JOB k A BUD C E DUE DATE (HOURS HENCE) 10 16 14 36 26 REQUIRED) 6 3 7 15 8 a) Sequence the jobs according to EDD. According to the EDD rule, the sequence of jobs should be A, C, B, E, D b) What is the average completion (flow) time? The average completion (flow) time is days (round your response to one decimal place).A group of six jobs is to be processed through a two-machine flow shop. The first operation involves cleaning and the second involves painting. Determine a sequence that willminimize the total completion time for this group of jobs. Processing times are as follows:PROCESSING TIME (hours)Job Work Center 1 Work Center 2A 5 5B 4 3C 8 9D 2 7E 6 8F 12 15 To employ Johnson’s rule, create a “blank” sequence first, such as:mhhe.com/stevenson13eEXAMPLE 41st 2nd 3rd 4th 5th 6thThe following 5 overhaul jobs are 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. Calculate the Critical Ratios (CR): (Enter all responses rounded to two decimal places.) Job CR Job Due Date Duration (days) 103 103 214 10 205 205 223 309 309 217 11 412 219 412 517 216 15 517 Assume that all jobs arrived on day 180; today's date is 200.
