Loading...
Search for:
mehdizadeh--e
0.01 seconds
The capacitated multi-facility location-allocation problem with probabilistic customer location and demand: Two hybrid meta-heuristic algorithms
, Article International Journal of Systems Science ; Volume 44, Issue 10 , 2013 , Pages 1897-1912 ; 00207721 (ISSN) ; Niaki, S.T. A ; Mehdizadeh, E ; Tavarroth, M.R ; Sharif University of Technology
2013
Abstract
A new mathematical model for the capacitated multi-facility location-allocation problem with probabilistic customers' locations and demands is developed in this article. The model is formulated into the frameworks of the expected value model (EVM) and the chance-constrained programming (CCP) based on two different distance measures. In order to solve the model, two hybrid intelligent algorithms are proposed, where the simplex algorithm and stochastic simulation are the bases for both algorithms. However, in the first algorithm, named SSGA, a special type of genetic algorithm is combined and in the second, SSVDO, a vibration-damping optimisation (VDO) algorithm is united. The Taguchi method...
Open-shop production scheduling with reverse flows
, Article Computers and Industrial Engineering ; Volume 153 , 2021 ; 03608352 (ISSN) ; Akhavan Niaki, S. T ; Mehdizadeh, E ; Najafi, A. A ; Sharif University of Technology
Elsevier Ltd
2021
Abstract
The purpose of this paper is to present a mixed-integer linear programming model for the scheduling problem in an open-shop manufacturing system involving reverse flows, where two job flows (direct and reverse) in two opposite directions are processed on the same machines. The aim is to minimize the maximum completion time of all jobs on all machines (i.e., the makespan). A numerical example is presented and solved using the GAMS software (version 25.1.2) to validate the proposed mathematical model. As this problem is NP-hard, a vibration damping-based optimization (VDO) algorithm is proposed to solve large-scale problems in reasonable execution times. Besides, the Taguchi experimental...
Open-shop production scheduling with reverse flows
, Article Computers and Industrial Engineering ; Volume 153 , 2021 ; 03608352 (ISSN) ; Akhavan Niaki, S. T ; Mehdizadeh, E ; Najafi, A. A ; Sharif University of Technology
Elsevier Ltd
2021
Abstract
The purpose of this paper is to present a mixed-integer linear programming model for the scheduling problem in an open-shop manufacturing system involving reverse flows, where two job flows (direct and reverse) in two opposite directions are processed on the same machines. The aim is to minimize the maximum completion time of all jobs on all machines (i.e., the makespan). A numerical example is presented and solved using the GAMS software (version 25.1.2) to validate the proposed mathematical model. As this problem is NP-hard, a vibration damping-based optimization (VDO) algorithm is proposed to solve large-scale problems in reasonable execution times. Besides, the Taguchi experimental...