title: An Optimization Model for Expired Drug Recycling Logistics Networks and Government Subsidy Policy Design Based on Tri-level Programming.
abstract: In order to recycle and dispose of all people's expired drugs, the government should design a subsidy policy to stimulate users to return their expired drugs, and drug-stores should take the responsibility of recycling expired drugs, in other words, to be recycling stations. For this purpose it is necessary for the government to select the right recycling stations and treatment stations to optimize the expired drug recycling logistics network and minimize the total costs of recycling and disposal. This paper establishes a tri-level programming model to study how the government can optimize an expired drug recycling logistics network and the appropriate subsidy policies. Furthermore, a Hybrid Genetic Simulated Annealing Algorithm (HGSAA) is proposed to search for the optimal solution of the model. An experiment is discussed to illustrate the good quality of the recycling logistics network and government subsides obtained by the HGSAA. The HGSAA is proven to have the ability to converge on the global optimal solution, and to act as an effective algorithm for solving the optimization problem of expired drug recycling logistics network and government subsidies.
authors.affiliation: College of Economics and Business Administration, Chongqing University, Chongqing 400044, China. huanghui16340@163.com.
authors.forename: Hui
authors.initials: H
authors.lastname: Huang
authors.affiliation: College of Computer and Information Science, Chongqing Normal University, Chongqing 400047, China. lyyjame@163.com.
authors.forename: Yuyu
authors.initials: Y
authors.lastname: Li
authors.affiliation: College of Economics and Business Administration, Chongqing University, Chongqing 400044, China. huangbo@cqu.edu.cn.
authors.forename: Bo
authors.initials: B
authors.lastname: Huang
authors.affiliation: College of Social Science, Third Military Medical University, Chongqing 400038, China. herryp@163.com.
authors.forename: Xing
authors.initials: X
authors.lastname: Pi
mesh_terms: D000465:Algorithms; D002681:China; D005380:Financing, Government; D006801:Humans; D008962:Models, Theoretical; D055553:Prescription Drugs; D059027:Recycling
chemical_list: D055553:Prescription Drugs
keywords: Hybrid Genetic Simulated Annealing Algorithm (HGSAA); expired drugs; logistics network; multilevel programming; subsidies