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Social Networks and the Process of Globalization

机译：社交网络和全球化过程

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摘要

We propose a stylized dynamic model to understand the role of social networks in the phenomenon we call "globalization". In a nutshell, this term refers to the process by which even agents who are geographically far apart come to interact, thus being able to overcome what would otherwise be a fast saturation of local opportunities. Akey feature of our model is that the social network is the main channel through which agents exploit new opportunities. Therefore, only if the social network becomes global (heuristically, it "reaches far in few steps") can global interaction be steadily sustained. An important insight derived from the model is that, for the social network to turn global, the long-range links required (bridges) cannot endogenously arise unless the matching mechanism displays significant local structure (cohesion). This sheds novel light on the dichotomy between bridging and cohesion that has long played a prominent role in the socio-economic literature. Our analysis also relates the process of globalization to other features of the environment such as the quality of institutions or the arrival rate of fresh ideas. The model is partially studied analytically for a limit scenario with a continuum population and is fully solved numerically for finite-population contexts.
机译：我们提出了一种程式化的动态模型，了解社交网络在我们称之为“全球化”现象中的作用。简而言之，该术语是指地理位置远离地理位置的代理商的过程是能够克服当地机会的快速饱和的过程。我们模型的AKEY特征是社交网络是代理商利用新机会的主要频道。因此，只有在社交网络变得全球（启发式上，它在几个步骤中达到远远达到“），只能稳步努力全局互动。源自模型的一个重要洞察力是，对于社交网络转动全球，除非匹配机制显示显着的局部结构（凝聚力），否则所需的远程链路不能内源性出现。这揭示了在社会经济文学中长期发挥着突出作用的桥接和凝聚力之间的二分作曲的小说。我们的分析还将全球化的过程与环境的其他特征（如机构质量或新鲜思想的到货率）涉及。该模型分析地研究了具有连续群体的极限场景，并且在数值上全面解决了有限人口背景。

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