全球班轮运输网络中的多尺度核心-外围结构
Multiscale core-periphery structure in a global liner shipping network
摘要：
海运占贸易量的大部分，其中70%的价值由集装箱船运输，这些集装箱船按固定的时间表在海洋中通过定期航线。在本文中，我们分析了全球班轮运输作为一个网络的港口的数据集。特别是，我们构建的网络的港口作为一个由港口和船舶航线的二分网络的单模投影。与其他运输网络一样，全球班轮运输网络可能具有核心-外围结构，其中核心和外围分别是密集和稀疏互连的节点组。核心-边缘结构可能对理解国际运输系统的稳健性、效率和不均衡发展具有实际意义。我们开发了一种算法来检测网络中的核心-外围对，该算法允许人们在不同的尺度上找到核心和外围节点，并使用一种配置模型来解释网络是由二分网络的单模投影获得的这一事实。我们还发现，大多数港口是核心（而不是边缘）港口，欧洲，美洲和亚洲的一些国家的港口属于不同规模的全球核心-边缘对，而其他国家的港口则不是。
英文摘要：
Maritime transport accounts for a majority of trades in volume, of which 70% in value is carried by container ships that transit regular routes on fixed schedules in the ocean. In the present paper, we analyse a data set of global liner shipping as a network of ports. In particular, we construct the network of the ports as the one-mode projection of a bipartite network composed of ports and ship routes. Like other transportation networks, global liner shipping networks may have core-periphery structure, where a core and a periphery are groups of densely and sparsely interconnected nodes, respectively. Core-periphery structure may have practical implications for understanding the robustness, efficiency and uneven development of international transportation systems. We develop an algorithm to detect core-periphery pairs in a network, which allows one to find core and peripheral nodes on different scales and uses a configuration model that accounts for the fact that the network is obtained by the one-mode projection of a bipartite network. We also found that most ports are core (as opposed to peripheral) ports and that ports in some countries in Europe, America and Asia belong to a global core-periphery pair across different scales, whereas ports in other countries do not.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
