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Structural characteristics of complex supply chain networks

机译：复杂供应链网络的结构特征

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There is a scarcity of analyses of topological properties of real world supply chain networks (SCNs), mainly due to lack of data. Most theoretical research has used the popular Barabasi-Albert (BA) growth model, in which new nodes (firms) entering the network attach preferentially to the existing nodes with more links (contractual relationships), to generate network topologies supposedly representative of real world SCNs. This paper looks at real world SCN topologies using data presented in Willems (2008) and establishes a general set of topological characteristics for the manufacturing sector. Based on observations from twenty six SCNs, it is found that, although manufacturing SCNs exhibit power law node degree distributions, they tend to be hub and spoke like, with hubs that are significantly larger than those predicted by the BA model. Also, the SCNs indicated the presence of closely knit, vertically integrated communities of firms, while highly connected firms were found to avoid connecting with each other. Since the above structural properties are not features of the networks generated by the BA model, it is concluded that a new mechanism is required to model the growth of SCNs.
机译：现实世界供应链网络（SCNS）的拓扑特性分析缺乏分析，主要是由于缺乏数据。大多数理论研究使用了流行的Barabasi-Albert（BA）生长模型，其中新节点（公司）在其中输入网络的新节点（公司）优先连接到具有更多链接（合同关系）的现有节点，以生成据称代表现实世界SCNS的网络拓扑。本文使用Willems（2008）中提出的数据来看待现实世界SCN拓扑，并为制造业建立一系列一般的拓扑特征。基于来自二十六个SCNS的观察结果，虽然制造SCNS表现出电力法节点度分布，但它们倾向于是集线器和辐条，其中具有明显大于由BA模型预测的集线器。此外，SCNS表示存在紧密针织，公司的垂直整合社区，而发现高度连接的公司避免彼此连接。由于上述结构特性不是BA模型产生的网络的特征，因此得出结论，需要一种新机制来建模SCN的生长。

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