针对电子废弃物逆向物流网络特点,从整体逆向物流选址优化角度,分析并确定了网络成本最优化混合整数线性规划(Mixed-Integer Linear Programming,MILP)模型.考虑废弃物的回收成本、处理成本、处理规模、经处理后碎片的销售收入、政府补...针对电子废弃物逆向物流网络特点,从整体逆向物流选址优化角度,分析并确定了网络成本最优化混合整数线性规划(Mixed-Integer Linear Programming,MILP)模型.考虑废弃物的回收成本、处理成本、处理规模、经处理后碎片的销售收入、政府补贴,以及由于专业分工所带来的在不同拆解处理厂间及不同粉碎处理厂间的物料流动,可以灵活支持子网络内各个企业间物流活动.此外模型支持多种类型的电子废弃物的输入,以及经处理后产生的多种不同的物料碎片的输出,帮助优化电子废弃物逆向物流网络中的选址和物料分配等问题.展开更多
In the past two decades, short-term scheduling of multipurpose batch plants has received significant attention. Most scheduling problems are modeled using either state-task-network or resource-task-network(RTN) proces...In the past two decades, short-term scheduling of multipurpose batch plants has received significant attention. Most scheduling problems are modeled using either state-task-network or resource-task-network(RTN) process representation. In this paper, an improved mixed integer linear programming model for short-term schedul-ing of multipurpose batch plants under maximization of profit is proposed based on RTN representation and unit-specific events. To solve the model, a hybrid algorithm based on line-up competition algorithm and linear programming is presented. The proposed model and hybrid algorithm are applied to two benchmark examples in literature. The simulation results show that the proposed model and hybrid algorithm are effective for short-term scheduling of multipurpose batch plants.展开更多
文摘针对电子废弃物逆向物流网络特点,从整体逆向物流选址优化角度,分析并确定了网络成本最优化混合整数线性规划(Mixed-Integer Linear Programming,MILP)模型.考虑废弃物的回收成本、处理成本、处理规模、经处理后碎片的销售收入、政府补贴,以及由于专业分工所带来的在不同拆解处理厂间及不同粉碎处理厂间的物料流动,可以灵活支持子网络内各个企业间物流活动.此外模型支持多种类型的电子废弃物的输入,以及经处理后产生的多种不同的物料碎片的输出,帮助优化电子废弃物逆向物流网络中的选址和物料分配等问题.
基金Supported by the National Natural Science Foundation of China(21376185)the Fundamental Research Funds for the Central Universities(WUT:2013-IV-032)
文摘In the past two decades, short-term scheduling of multipurpose batch plants has received significant attention. Most scheduling problems are modeled using either state-task-network or resource-task-network(RTN) process representation. In this paper, an improved mixed integer linear programming model for short-term schedul-ing of multipurpose batch plants under maximization of profit is proposed based on RTN representation and unit-specific events. To solve the model, a hybrid algorithm based on line-up competition algorithm and linear programming is presented. The proposed model and hybrid algorithm are applied to two benchmark examples in literature. The simulation results show that the proposed model and hybrid algorithm are effective for short-term scheduling of multipurpose batch plants.