As the huge computation and easily trapped local optimum in remanufacturing closed-loop supply chain network (RCSCN) design considered, a genetic particle swarm optimization algorithm was proposed. The total cost of c...As the huge computation and easily trapped local optimum in remanufacturing closed-loop supply chain network (RCSCN) design considered, a genetic particle swarm optimization algorithm was proposed. The total cost of closed-loop supply chain was selected as fitness function, and a unique and tidy coding mode was adopted in the proposed algorithm. Then, some mutation and crossover operators were introduced to achieve discrete optimization of RCSCN structure. The simulation results show that the proposed algorithm can gain global optimal solution with good convergent performance and rapidity. The computing speed is only 22.16 s, which is shorter than those of the other optimization algorithms.展开更多
为有效解决建筑行业内外部环境不确定性与建筑供应链复杂性、脆弱性之间的矛盾,促进建筑供应链网络整体安全稳定,防范化解节点企业中断风险,基于复杂网络理论和级联失效模型提出一种建筑供应链网络抗毁性分析方法。首先从业务、资源、...为有效解决建筑行业内外部环境不确定性与建筑供应链复杂性、脆弱性之间的矛盾,促进建筑供应链网络整体安全稳定,防范化解节点企业中断风险,基于复杂网络理论和级联失效模型提出一种建筑供应链网络抗毁性分析方法。首先从业务、资源、信息流通角度,利用TOPSIS(technique for order preference by similarity to an ideal solution)方法根据多个复杂网络中心性指标对节点企业进行重要度评估,其次结合建筑供应链运营特点,建立改进的负载-容量-弹性级联失效模型,在蓄意攻击下从网络损失角度衡量企业中断的影响,从节点容量、负载、弹性角度分析探讨网络抗毁性的提升策略。经过数值仿真与分析,研究表明:(1)建筑供应链网络上游节点企业遭受中断风险冲击时,供应链网络能够表现出较强的网络抗毁性,但应着重关注下游供应商企业,避免网络整体因建筑材料或基础服务供应短缺遭受更多损失;(2)采取节点企业间较小的业务容量差异、较大的业务负载差异、适量且高水平的风险补救成本投入等策略能够有效降低节点企业中断时供应链网络的损失,从而提升网络抗毁性水平;(3)在多类策略中,节点容量策略对抗毁性的提升效果依次优于节点弹性策略和节点负载策略。研究结果可为提升建筑供应链安全水平和提出中断风险管理策略提供科学参考。展开更多
基金Project(2011ZK2030)supported by the Soft Science Research Plan of Hunan Province,ChinaProject(2010ZDB42)supported by the Social Science Foundation of Hunan Province,China+1 种基金Projects(09A048,11B070)supported by the Science Research Foundation of Education Bureau of Hunan Province,ChinaProjects(2010GK3036,2011FJ6049)supported by the Science and Technology Plan of Hunan Province,China
文摘As the huge computation and easily trapped local optimum in remanufacturing closed-loop supply chain network (RCSCN) design considered, a genetic particle swarm optimization algorithm was proposed. The total cost of closed-loop supply chain was selected as fitness function, and a unique and tidy coding mode was adopted in the proposed algorithm. Then, some mutation and crossover operators were introduced to achieve discrete optimization of RCSCN structure. The simulation results show that the proposed algorithm can gain global optimal solution with good convergent performance and rapidity. The computing speed is only 22.16 s, which is shorter than those of the other optimization algorithms.
文摘为有效解决建筑行业内外部环境不确定性与建筑供应链复杂性、脆弱性之间的矛盾,促进建筑供应链网络整体安全稳定,防范化解节点企业中断风险,基于复杂网络理论和级联失效模型提出一种建筑供应链网络抗毁性分析方法。首先从业务、资源、信息流通角度,利用TOPSIS(technique for order preference by similarity to an ideal solution)方法根据多个复杂网络中心性指标对节点企业进行重要度评估,其次结合建筑供应链运营特点,建立改进的负载-容量-弹性级联失效模型,在蓄意攻击下从网络损失角度衡量企业中断的影响,从节点容量、负载、弹性角度分析探讨网络抗毁性的提升策略。经过数值仿真与分析,研究表明:(1)建筑供应链网络上游节点企业遭受中断风险冲击时,供应链网络能够表现出较强的网络抗毁性,但应着重关注下游供应商企业,避免网络整体因建筑材料或基础服务供应短缺遭受更多损失;(2)采取节点企业间较小的业务容量差异、较大的业务负载差异、适量且高水平的风险补救成本投入等策略能够有效降低节点企业中断时供应链网络的损失,从而提升网络抗毁性水平;(3)在多类策略中,节点容量策略对抗毁性的提升效果依次优于节点弹性策略和节点负载策略。研究结果可为提升建筑供应链安全水平和提出中断风险管理策略提供科学参考。
