8. Operations times of servicing of Washing Machines are given below. The first operationinvolves cleaning in Machine 1 and the second operation involves oiling in Machine 2.a. Determine a sequence that will minimize the total completion time for thisgroup of jobs, following Johnson's Rule.b. Construct a chart of the operations of the jobs at the two work centers anddetermine idle time of each line, assuming no other activities are involved.Processing times (Hrs.) is as follows:JOBS: AEFMachine 1: 548.6.12Machine 2:5 39.8.15

Answered: 8. Operations times of servicing of…

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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Jobs Work Centre 1 Work Centre 2 A 10 8 B 5 7 C 12 6 D 9 9 E 7 10 F 13 9 G 12 12 H 5 15 Questions: Based on the above table Find the sequence of jobs that minimizes the total elapsed time to complete them Determine the total flow time for each work centre
The following table shows jobs to be processed at a machine. Determine the processing sequence that will minimize total number of late jobs. Job Processing Time (days) Due Date (days) А 4 В 2 10 2 11 E 4 13 F 9 20 1. Job (Click to select v is the first job that is late in the given sequence. 2. Job (Click to select) v has the largest processing time out of these 5 jobs. 3. Optimal sequence is (Click to select) v with one job late.
The following six jobs are to be scheduled on a single machine: Job 1 2 3 4 5 6 Processing time 130 160 210 70 140 90 (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 4 5 6 Makespan: Average flow time: b. In what order would the jobs be processed using the SPT rule? The SPT sequence is -Select---Select---Select---Select---Select- V -Select- V. Compute the average flow time after each job is completed. Round your answer to the nearest whole number. Average flow time: minutes Compare this answer with your answer to part a. The -Select- minutes minutes ✓ minimizes flow time and gets the most work done in the least amount of time.
Five jobs are ready for processing at time zero through a workstation. The details regarding the processing time and the due date of completion is provided in the following table. Job Processing Time (days) Due Date A 6 10 B 5 17 C 2 13 D 3 9 E 4 15 Using the earliest due date (EDD) rule, the average tardiness of the five jobs is:
How is the scheduling of patients in a doctor’s clinic simi-lar to and different from the scheduling of jobs in a factory?
Eight jobs have arrived in the following order: Job Processing Time Due Date 1 7 23 2 3 9 3 5 8 4 2 11 5 6 16 6 9 18 7 14 40 8 4 31 Find and compare the performance measures for the following sequencing rules using the Excel Sequencing template. Round your answers to two decimal places. Process in the order they have arrived Flow Time Lateness Tardiness Average
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The following five jobs, along with their processing time and due dates, are given below. Processing Days Due Job Time (days) From Today A 8 12 B 4 9 C 3 6 D 7 7 E 5 20 a. Use the Shortest Processing Time Rule (SPT), determine new sequence and determine the average flow-time for the five jobs b. Use the Earliest Due Date Rule (EDD), determine new sequence, and determine the average tardiness.
Job times which includes processing and set up times are shown below: Job Job Time (bs) Due Date (bs) 15 24 20 8 6 A > B C D 12 6 14 3 7 B Using FCFS, determine the average flowtime
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).
Glaudious is 45 years old university internship coordinator. He is handling 80 interns and he would like to perform the following tasks in an easy and fast way. He also encountered an accident a year ago which caused his right leg to have a bone minor fracture which caused him to limit the place he can go. He would like that he can perform the tasks anytime and anywhere. Below are the tasks of Prof Glaudios. 1) He registers the students undergoing internship, this includes the term in a schoolyear, the company name where the student is undergoing internship, directsupervisor of the intern, start of duty, Number of Hours of duty per day, andthe Job of the student-intern in the company. 2) He will also view the following: a) Individual internship record in a term-sem-school year b) Interns details in a company using the Professor Glaudious Scenario, provide the requirements specification: a. Functional b. Data c. Environmental d. User e. Usability

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