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3. Consider the following 6 jobs with the routing M1 M2, determine the optimal sequence to minimize Cmax.
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- 4. A machining center in a job shop for a local fabrication company has five unprocessed jobs remaining at a particular point in time. The jobs are labeled 1, 2, 3, 4,and 5 in the order that they entered the shop. The respective processing times and due dates are given in the table below. Rule FCFS SPT EDD CR a. Job number Time 1 2 I. II. III. IV. Processing 3 4 5 11 29 31 1 2 Due Date 61 4533 31 32 Determine the sequence of jobs, the average flow time, average tardiness and average number of jobs at the work center for each of the following rules: FCFS SPT EDD CR Summarize the results for all four scheduling rules in the following table. b. Determine a sequence that will minimize the average tardiness. Average flow time (days) Average Average number of jobs Sequence tardiness (days) at the work-center4. Use Smith's rule to solve the problem 1|| F subject to Tax 54 with data: Job Processing time Due date 1 3 4 7 5 3 33 13 6. 22 31 38 14 Then, find the optimal mean flow time.1. A municipal government wants to improve the efficiency of the local court system. It has collected data on the average length of time a particular judge requires to handle each type of case. Given the composition of the types of cases scheduled on each docket (the official schedule of proceedings in lawsuits pending in a court of law), the times shown in the table were estimated for each judge to process each different docket. Determine the assignment of judges to dockets to minimize the time required to complete all dockets. Judge gevej 2 3 4 5 A 13 20 18 25 15 B 17 15 21 20 18 Dockets C 21 15 18 17 20 hoversitorsak D 18 24 17 14 25 E 22 15 25 19 13
- 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>>> Hours1. A company has five jobs awaiting processing at a bottleneck work- station in a production facility. The day the job was received, its processing time and due date are given in the following table. It is now the beginning of day 13. Day Job Job was Received Job Processing Job Due Time (days) Day 1 6. 45 8 28 7 23 10 9. 35 12 1 21 Calculate the average throughput time and, for each job, the number of days overdue using the following priority sequencing rules: (a) First-come-first-serve (b) Earliest due date (c) Shortest processing time (d) Which rule should be used, in your opinion? Why? (e) The head mechanic at the production facility wants to perform mainte- nance on the bottleneck workstation used to process the jobs above. The mechanic insists the maintenance needs to be performed before day 45, and has indicated that the maintenance will take 3 days to complete and will take the workstation offline. Considering it is still day 13, when is the best time to perform the maintenance?…BUS 517 WK 11 Final ExamMultiple Choice Questions1. Information to develop a project network is collected from the A. Organization breakdown structureB. Work breakdown structureC. BudgetD. Project proposalE. Responsibility matrix2. Which of the following represents an activity on an AON project network? A. An arrowB. A lineC. A nodeD. Both A and B are correctE. A, B, and C are all correct3. Arrows on an AON project network represent: A. An activityB. Project flowC. DependencyD. Both B and C are correctE. Both A and B are correct4. When translated into a project network, a work package will become A. A single activityB. One or more activitiesC. A milestoneD. A critical pathE. An arrow5. Which of the following is provided by a project network but not by the work breakdown structure? A. DependenciesB. SequencingC. InterrelationshipsD. Both A and B are correctE. A, B, and C are all correct6. On a project network, the activity times are derived from the A. Organization breakdown structureB.…
- TB 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 hours33) Workstation #1 Given the following queue of 4 jobs to be processed at Workstation #1: Job Processing Time (Days) # Days Until Due A 5 12 B 11 20 C 7 10 D 9 14 In what sequence will the jobs be completed if the DDATE rule is used? Group of answer choices a) A-C-D-B b) C-A-D-B c) A-B-C-D d) C-D-A-B 34)What is the average completion time if the FCFS rule is used? Group of answer choices a) 76 b) 72 c) 31 d) 18 e) 19 f) 56at work center 27 2. The production manager at the Knox Machine Company is preparing a production schedule for mation on jobs currently waiting to be processed at this machine. (There are no other jobs, and one of the fabrication shop's machines, the P&W grinder. He has collected the following infor- the machine is empty.) Machine Processing Time, Days* Date Job Arrived at this Machine Job A B C D *Note: This is the final operation for each of these jobs. 4152 6-23 6-24 7-01 6-19 Job Due Date 8-15 9-10 8-01 8-17 The production manager has heard about three dispatching rules: the shortest operation next rule, the first-come/first-served rule, and the earliest due date rule. In what sequence would these jobs be processed at the P&W grinder if each rule were applied? b. If it's now the morning of July 10 and the shortest operation next rule is used, when would each of the four jobs start and be completed on the P&W grinder? (Express your schedule in terms of the calendar dates involved,…
- 2. A small restaurant is creating a schedule for its wait staff to meet its expected weekly demand. The staff requirements have been determined to be: day monday tuesday wednesday thursday friday saturday sunday 1 staff 3. 3. The restaurant would like its staff to have two consecutive days off, with a preference given to Saturday and Sunday, or one of those two days if the pair is not possible. (a) Create a schedule to meet the staff requirements. How many wait staff are needed? (b) The restaurant believes regular maintenance of the kitchen is important. The kitchen staff would like 1 extra worker whenever they perform main- tenance. On which days of the week should maintenance be scheduled? (c) The restaurant wants to create a 'kid's day' (young children eat for free) to attract customers on days with low demand. Given your staff schedule, which day is best to implement this promotion.Find out optimum sequence3. George Heinrich Printing Company wants to schedule the following seven jobs where each job must be processed by two machines A and B, first on machine A and then machine B. The processing times at machine A and B are as follows: Job i 1 2 3 4 5 6 7Processing time on machine A (ai) 15 7 4 7 10 4 7Processing time on machine B (bi) 3 9 10 6 9 5 8 (a) Suppose the inter-arrival times between jobs can be treated as zero and Johnson’srule is used to sequence and process the jobs, what is the completion time of eachjob and what is the total throughput time (makespan) of all jobs? (b) Now suppose that FIFO system (i. e., schedule job l before job 2, etc.) of schedulingand processing the jobs is used. What is the completion time of each job and whatis the total throughput time (makespan) of all jobs? (c) What would be the difference in the average time a job spends in the shop in (a)and (b) above?