Four jobs need to be sequenced through three machines with an open-shop setup (i.e. there are...
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Four jobs need to be sequenced through three machines with an open-shop setup (i.e. there are no precedence constraints on machine processing). The following data is available concerning the four jobs: Pij (secs) Machine 1 Machine 2 Machine 3 Due Date Weight Job 1 5 6 4 20 1 Job 2 2 7 6 20 3 Job 3 7 5 3 24 1 Job 4 5 6 3 18 2 □ Sequence the 4 jobs to each machine to simultaneously minimize makespan and total weighted tardiness. When even swaps are useful to compare alternative schedules, use the following value: (1 unit Makespan) is equivalent to (3 units total weigted tardiness.) Show a Gantt Chart to show such sequence and indicate the total weighted tardiness found. Four jobs need to be sequenced through three machines with an open-shop setup (i.e. there are no precedence constraints on machine processing). The following data is available concerning the four jobs: Pij (secs) Machine 1 Machine 2 Machine 3 Due Date Weight Job 1 5 6 4 20 1 Job 2 2 7 6 20 3 Job 3 7 5 3 24 1 Job 4 5 6 3 18 2 □ Sequence the 4 jobs to each machine to simultaneously minimize makespan and total weighted tardiness. When even swaps are useful to compare alternative schedules, use the following value: (1 unit Makespan) is equivalent to (3 units total weigted tardiness.) Show a Gantt Chart to show such sequence and indicate the total weighted tardiness found.
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Answer rating: 100% (QA)
Explanation To find the optimal sequence for the jobs and machines in an openshop setup while minimizing makespan and total weighted tardiness we can ... View the full answer
Related Book For
Practical Management Science
ISBN: 978-1305250901
5th edition
Authors: Wayne L. Winston, Christian Albright
Posted Date:
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