摘要
针对无标度物流网络延误扩散发生的临界条件,应用平均场理论,建立以延误节点密度为标度的常微分方程,求解延误扩散的临界条件;通过设计物流网络中延误扩散仿真系统,生成具有无标度属性的虚拟网络,对临界条件进行了仿真验证。研究结果表明:无标度物流网络中存在少数具有较高度值的关键节点,一旦这些节点出现服务障碍,将导致更大范围内的延误和更快的延误扩散速率。
Aiming at the critical condition of delay diffusion in scale-free logistics network, a susceptibleinfected-susceptible(SIS) model based on the density of delay nodes is established by mean field theory,and the critical value is solved. By designing the delay diffusion simulation system in logistics network, a virtual network with scale-free attribute is generated, and the critical condition is verified by simulation.The results show that there are a few key nodes with high value in scale-free logistics network. Once these nodes have service obstades, compared with other nodes, it will lead to a larger range of delay and faster delay diffusion rate.
作者
姚红光
肖恢翚
张航
Yao Hongguang;Xiao Huihui;Zhang Hang(Shanghai University of Engineering Science,Shanghai 201620,China)
出处
《系统仿真学报》
CAS
CSCD
北大核心
2022年第4期901-909,共9页
Journal of System Simulation
基金
国家社会科学基金(16BGL014)。
关键词
无标度物流网络
延误扩散
临界条件
仿真检验
scale-free logistics network
delay diffusion
critical condition
simulation verification