Concept explainers
(a)
Interpretation:The optimal sequence flavors for the minimization of the maximum lateness is to be determined by using L’s algorithm.
Concept Introduction:
Shortest processing time rule is used for the minimization of mean time flow of the project and hence it is used to minimize the time of mean flow of a process.
Tardiness is used to calculate the difference between the actual completion time and the required due date of the job. Any tardy jobs get completed after the due date of the job.
(b)
Interpretation:Evaluation and comparison of the each objective function value is to be done.
Concept Introduction:
Shortest processing time rule is used for the minimization of mean time flow of the project and hence it is used to minimize the time of mean flow of the process.
Tardiness is used to calculate the difference between the actual completion time and the required due date of the job. Any tardy jobs get completed after the due date of the job.
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Production and Operations Analysis, Seventh Edition
- Dan's Auto Detailing business performs two major activities: exterior cleanup and interior detailing. Based on the size of car and condition, time estimates for six cars on Monday morning are as shown in the accompanying table. Car Number 1 5 6 Exterior Interior 55 75 4 65 35 50 60 45 90 35 40 a. Sequence the cars so that all exterior cleanup is done first and total completion time is minimized. The sequence is -Select-- -Select- -Select- -Select- -Select-- -Select- 2 3 80 20arrow_forwardSunny Park Tailors has been asked to make three different types of wedding suits for separate customers. The table below highlights the time taken in hours for cutting and sewing (process 1) and delivery (process 2) of each of the suits. Using the FCFS rule for scheduling, the sequence is For the schedule developed using the FCFS rule, the total length of time taken to complete the three suits (including delivery) = | hours (enter your response as a whole number). Times Taken for Different Activities (hours) Using Johnson's rule for 2-machine scheduling, the sequence is Suit Cut and Sew Deliver 1 2 4 3 For the schedule developed using the Johnson's rule, the total length 3 6. of time taken to complete the three suits (including delivery) =| hours (enter your response as a whole number). Assume that orders for suits have been listed in the above table in the order in which they were received. Of the two developed schedules, rule gets the schedule finished sooner.arrow_forwardAt the campus copy shop, six jobs have arrived in the order shown (A, B, C, D, E, and F) at the beginning of the day 1 (today, which is a work day). All of the jobs are due at various times today. Your job is to evaluate four common sequencing rules. JOB DUE (IN HOURS) DURATION (HOURS REQUIRED) A 8 (this job is due in 8 hours) 1.65 B 5.5 (this job is due in 5.5 hours) 1.20 C 4.5 (this job is due after lunch in 4.5 hours) 0.85 D 6 (this job is due in 6…arrow_forward
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- 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 6tharrow_forwardUsing the FCFS rule for scheduling, the sequence is Sunny Park Tailors has been asked to make three different types of wedding suits for separate customers. The table below highlights the time taken in hours for cutting and sewing (process 1) and delivery (process 2) of each For the schedule developed using the FCFS rule, the total length of time taken to complete the three suits (including of the suits. delivery) = hours (enter your response as a whole number). Times Taken for Different Activities (hours) Deliver Suit Cut and Sew Using Johnson's rule for 2-machine scheduling, the sequence is 1 2. For the schedule developed using the Johnson's rule, the total length of time taken to complete the three suits 3 (including delivery) = hours (enter your response as a whole number). Assume that orders for suits have been listed in the above table in the order in which they were received. Of the two developed schedules, V rule gets the schedule finished sooner.arrow_forwardIn a school, there are four teachers X1,X2,X3,X4 and five batches Y1,Y2,Y3,Y4,Y5. Given that teacher Xi is required to teach batch Yj for Pij periods, schedule a complete routine in the minimum possible number of periods. The matrix is given below: X1 X2 X3 X4 Y1 2 2 -- -- Y2 1 Y3 -- -- Y4 | 1 2 1 -- Y5 1 1 -- -- Remember there are only 3 class rooms available.arrow_forward
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