Volume 7, Issue 3, August 2014, Pages 857–867
Neelam Tyagi1, Hany Seidgar2, Mehdi Abedi3, and A.B. Chandramouli4
1 Department of Mathematics, Graphic Era University, Dehradun, Uttarakhand, India
2 Mazandaran University of Science and Technology, Babol, Iran
3 Mazandaran University of Science and Technology, Babol, Iran
4 Department of Mathematics, Meerut College, Meerut, Uttar Pradesh, India
Original language: English
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
In this paper we consider learning and forgetting effect of workers for flexible flowshop scheduling problem with sequence dependent setup times. The objective is to minimize the weighted sum of maximum completion time and maximum tardiness. The learning effect occurs when operator's (workers) skill increases after repeating similar job causing the decrease of processing time. On the other hand, forgetting effect occurs when an operator relearns the process after an interruption for a batch setup, machine maintenance or operator condition recovery, causing the increase of processing time.
Author Keywords: flexible flow shop Scheduling, learning effect, Forgetting effect, Makespan(Total completion time), Tardiness.
Neelam Tyagi1, Hany Seidgar2, Mehdi Abedi3, and A.B. Chandramouli4
1 Department of Mathematics, Graphic Era University, Dehradun, Uttarakhand, India
2 Mazandaran University of Science and Technology, Babol, Iran
3 Mazandaran University of Science and Technology, Babol, Iran
4 Department of Mathematics, Meerut College, Meerut, Uttar Pradesh, India
Original language: English
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
In this paper we consider learning and forgetting effect of workers for flexible flowshop scheduling problem with sequence dependent setup times. The objective is to minimize the weighted sum of maximum completion time and maximum tardiness. The learning effect occurs when operator's (workers) skill increases after repeating similar job causing the decrease of processing time. On the other hand, forgetting effect occurs when an operator relearns the process after an interruption for a batch setup, machine maintenance or operator condition recovery, causing the increase of processing time.
Author Keywords: flexible flow shop Scheduling, learning effect, Forgetting effect, Makespan(Total completion time), Tardiness.
How to Cite this Article
Neelam Tyagi, Hany Seidgar, Mehdi Abedi, and A.B. Chandramouli, “Learning and Forgetting Effects of Flexible Flow Shop Scheduling,” International Journal of Innovation and Applied Studies, vol. 7, no. 3, pp. 857–867, August 2014.
