Date Determine the sequence to minimize the sum of Earliness and Tadiness Job sequence: 3
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A:
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Q: Time Task Precedence Tasks Task (sec (s ЕЗ D6 D7 D8 J2 D9 J3 C1 K4, K9 K9, J1 B3 B5 J2 B7 25
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Q: QUESTION ONE Six jobs are to be processed through a two-step operation. The first operation involve…
A: given,
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A: The scheduling as per Johnson rule can be done as follows:
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Q: snip
A: Tardiness is a metric which shows the lateness of the job. It is determined by subtracting the due…
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Q: a) What will be the job sequences using (1) CR and (2) SPT rules? b) What will be the (1) average…
A:
Q: Determine the best assignment of jobs to. What is the resulting total production of the assignment?
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A: As per FCFS rule, jobs will be scheduled in the sequence of their arrival.
Q: Schedule the following six jobs through two machines in sequence to minimize the l owtime using…
A:
Q: What is the mean tardiness (in days) for all jobs? What is the mean completion time in days for…
A: Below is the solution:-
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- Q5(a) Wonderloaf Bakery has orders for five specialty jobs A, B, C, D, and E that must be processed sequentially through two work centers baking and decoration. The amount of time in hours required for the jobs is shown in Table Q5(a). Determine the schedule sequence that minimizes the total elapsed time for five jobs using the following techniques; (i) Critical ratio; (ii) Johnson's Rule; Table Q5(a) Job (Orders Received) Processing time(hrs) Baking Hours remaining Decoration A 13 3 в 18 4 17 8 2 D 15 7 4 E 22 6 10TB MC Qu. 16-80 The owner/operator of the local franchise of... The owner/operator of the local franchise of Handyman, Inc., has four jobs to do today, shown in the order they were received: Job W X Y Z Processing Due Time (hrs) (hrs from now) 5 4 T 4 5 2 2 1 1 If he uses the earliest due date first priority rule to schedule these jobs, what will be the average job tardiness? Multiple Choice O O O 3 hours 2 hours 0 hours 4 hoursCurrently a company that designs Web sites has five customers in its backlog. The time since the order arrived, processing time, and promised due dates are given in the following table. The customers are ready to be scheduled today, which is the start of day 190. Customer Time Since Order Arrived (days ago) Processing Time (days) Due Date (days from now) Upper AA 6 18 66 Upper BB 3 24 58 Upper CC 2 32 100 Upper DD 10 22 26 Upper EE 8 12 50 a. Develop separate schedules by using the FCFS and EDD rules. Compare the schedules on the basis of average flow time and average days past due. Part 2 Using the FCFS (first come, first served) decision rule for sequencing the customers, the order is: Sequence 1 2 3 4 5 Customer D E A B C Part 3 Using…
- On 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 .At the University Hospital, five blood samples must bescheduled through a blood-testing laboratory. Eachsample goes through up to four different testing stations.The times for each test and the due dates for eachsample are as follows:Sample Test Station/Hours Due Date (hours)1 A/1, B/2, C/3, D/1 62 B/2, C/3, A/1, D/4 103 C/2, A/3, D/1, C/2 84 A/2, D/2, C/3, B/1 145 D/2, C/1, A/2, B/4 12a. Using a Gantt chart, schedule these five samples in priority order of earliest due date first.b. Assume that the capacity of each test station (A, B, C and D) is doubled. Prepare an FCS for this situation.c. What are the bottleneck work centers in part a of the problem. Suggest capacity additions that might be needed.The 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.
- b. The Healthy Food Restaurant, a 24-hour restaurant, faces changing requirements from hour tohour. More workers are needed for peak hours, and fewer are needed in between. The followingTable 6 (below) shows the worker requirement for the first 12 hours in the restaurant:Table 6. Staff Requirement at the Healthy Food RestaurantTime Period 10AM11AM12PM1PM2PM3PM4PM5PM6PM7PM8PM9PMRequirement 8 10 12 12 9 7 6 7 9 10 12 8AssignedOn DutyOverstaffed8(i) You are required to apply the first-hour principle to staff each hour with the required number ofcafeteria staff, showing how many staff are on duty each given hour, the number of staffyou have assigned to work each hour and any overstaffing for each hour. i. Schedule the staff to work in 8-hour shifts.3. Eddie Irwin works in the data processing department at the local medical center. He is required to keep a weekly time card. Please fill out the time card Date Out Sun. Mon. Tues. Wed. Thur. Fri. Sat. 12/13 In 12/14 8:15am 12:30pm 12/15 8:35am 12:50pm 12/16 8:15am 12:10pm 1:15pm 8:30am 12 noon 12/17 8:25am In 12:30pm 1:10pm 1:30pm 12:45pm 1:50pm Out 4:30pm 5:10pm 5:00pm 4:20pm 5:30pm Total Hours>>> Hoursuestion 2:ID:_________________________Three jobs are to be scheduled on two machines A and B. Assume that the jobs are processed in the sequence A-B. The processing times are: JobA1 2 35 7 3B4 7 5Draw a Gantt chart that shows the schedule corresponding to the sequence 1-2-3 of the jobs.
- Calculate the Critical Ratios (CR): (Enter all responses rounded to two decimal places.) The 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. Job CR 103 Job Due Date Duration (days) 103 214 10 205 223 7 309 217 11 412 219 5 517 217 15 Assume that all jobs arrived on day 180; today's date is 200.Job Arrived Time Due Date 8. 15 6. 11 22 C 11 8. 6. E 9. 4 9. 16 Using the information in the table and the EDD rule, what is the average days past due? days (Round off to 1 decimal place) 7, 5. 3. 8.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?