揭开城市系统及其流动性的隐藏组织
Unraveling the hidden organisation of urban systems and their mobility flows
摘要：
越来越多的证据表明，城市是一个复杂系统，其结构和动力特征导致了一系列新出现的现象。在这里，我们使用一个独特的数据集的人流量，并将其与信息的基础街道网络，同时研究，结构和功能组织的10个世界特大城市。我们量化了一个城市的区域之间的流量交换效率的整合和隔离使用定义明确的措施。结果揭示了意想不到的复杂模式，为城市组织提供了新的视角。大城市往往更加隔离，更少融合，而它们的整体拓扑组织类似于小世界网络。同时，流量分布的异质性可能成为进一步整合城市的催化剂。我们的分析揭示了人类行为如何影响城市环境，并受到城市环境的影响，提出了控制人流整合和隔离的定量指标，这些指标可用于紧急情况下采取的限制政策，并作为一个有趣的副产品，使我们能够分析不同大都市地区，国家和文化的相似性。
英文摘要：
Increasing evidence suggests that cities are complex systems, with structural and dynamical features responsible for a broad spectrum of emerging phenomena. Here we use a unique data set of human flows and couple it with information on the underlying street network to study, simultaneously, the structural and functional organisation of 10 world megacities. We quantify the efficiency of flow exchange between areas of a city in terms of integration and segregation using well defined measures. Results reveal unexpected complex patterns that shed new light on urban organisation. Large cities tend to be more segregated and less integrated, while their overall topological organisation resembles that of small world networks. At the same time, the heterogeneity of flows distribution might act as a catalyst for further integrating a city. Our analysis unravels how human behaviour influences, and is influenced by, the urban environment, suggesting quantitative indicators to control integration and segregation of human flows that can be used, among others, for restriction policies to adopt during emergencies and, as an interesting byproduct, allows us to characterise functional (dis)similarities of different metropolitan areas, countries, and cultures.
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。
