基于演化模型的供应链网络脆弱性研究

发布时间：2018-04-16 21:31

本文选题：供应链网络 + 复杂网络理论　；参考：《华中科技大学》2015年硕士论文

【摘要】：随着政治、经济、技术、自然环境的变化加剧及个性化、多样化需求的日益增长,供应链网络日趋复杂,也变得愈为脆弱,如何有效地分析供应链网络的脆弱性,是维护供应链网络有效运行的重要方法。基于复杂网络知识,本文综合考虑了供应链网络的实际运作特性,建立了有向加权层次型供应链网络演化模型。并在该模型的基础上,深入探讨了供应链网络脆弱性,提出了识别重要节点的方法。论文首先探讨了供应链网络脆弱性的根源及其影响因素,并介绍了复杂网络的相关知识及其应用于供应链网络的研究现状,指出了现有研究成果的不足。其次,结合复杂网络知识,将供应链网络中成员企业视作网络的点,成员企业间业务来往视作连边,构建有向加权层次型供应链网络演化模型。该模型不仅考虑了新节点的加入和原有节点间新业务关系的建立,还结合了节点退出网络以及中断旧业务关系的实际情况,并且综合考虑了成员企业间业务强度以及网络层次特性,更符合实际供应链网络。此外,该模型的仿真结果分析表明该网络模型的各类统计参数符合实际的供应链网络情况。再次,基于构建的供应链网络模型,对脆弱性展开分析。选取连通性、网络效率和负载熵作为脆弱性的衡量指标,从网络结构和级联失效两个方面分别探讨供应链网络的静态脆弱性和动态脆弱性。此外,在供应链网络的级联失效分析过程中,发现了网络的自组织临界性,并分析了网络结构与失效规模之间的关系。给定了基于级联失效的企业重要性判定方法,有助于识别潜在关键成员企业。最后,通过上海大汽集团的供应链网络实例,验证了该供应链网络模型和脆弱性分析方法的适用性和有效性。
[Abstract]:With the change of politics, economy, technology, natural environment and the increasing demand of the supply chain, the supply chain network becomes more and more complex, and becomes more and more fragile. How to analyze the vulnerability of the supply chain network effectively?It is an important method to maintain the effective operation of supply chain network.Based on the knowledge of complex networks, this paper synthetically considers the practical operation characteristics of supply chain networks, and establishes a directed weighted hierarchical supply chain network evolution model.On the basis of this model, the vulnerability of supply chain network is discussed in depth, and the method of identifying important nodes is proposed.Firstly, this paper discusses the source of supply chain network vulnerability and its influencing factors, introduces the related knowledge of complex network and its application in supply chain network, and points out the deficiency of existing research results.Secondly, considering the complex network knowledge, the member enterprises in the supply chain network are regarded as the points of the network, and the business transactions among the member enterprises are regarded as the continuous edges, and the evolution model of the directed weighted hierarchical supply chain network is constructed.The model not only takes into account the new nodes and the establishment of new business relations between the existing nodes, but also combines the actual situation of node exit from the network and the interruption of the old business relationship.Considering the business intensity and network hierarchy characteristics of member enterprises, it is more in line with the actual supply chain network.In addition, the simulation results show that the statistical parameters of the model are in line with the actual supply chain network.Thirdly, based on the model of supply chain network, the vulnerability is analyzed.Based on connectivity, network efficiency and load entropy, the static and dynamic vulnerabilities of supply chain networks are discussed from the aspects of network structure and cascade failure.In addition, in the process of cascading failure analysis of supply chain network, the self-organizing criticality of the network is found, and the relationship between the network structure and the failure scale is analyzed.The method of enterprise importance determination based on cascaded failure is given, which is helpful to identify potential key member enterprises.Finally, the applicability and validity of the supply chain network model and the vulnerability analysis method are verified by an example of the supply chain network of Shanghai Big Auto Group.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：F274

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