英文标题：
《International trade network: fractal properties and globalization puzzle》
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作者：
Mariusz Karpiarz and Piotr Fronczak and Agata Fronczak
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最新提交年份：
2014
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英文摘要：
  Globalization is one of the central concepts of our age. The common perception of the process is that, due to declining communication and transport costs, distance becomes less and less important. However, the distance coefficient in the gravity model of trade, which grows in time, indicates that the role of distance increases rather than decreases. This, in essence, captures the notion of the globalization puzzle. Here, we show that the fractality of the international trade system (ITS) provides a simple solution for the puzzle. We argue, that the distance coefficient corresponds to the fractal dimension of ITS. We provide two independent methods, box counting method and spatial choice model, which confirm this statement. Our results allow us to conclude that the previous approaches to solving the puzzle misinterpreted the meaning of the distance coefficient in the gravity model of trade.
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中文摘要：
全球化是我们这个时代的核心概念之一。人们普遍认为，由于通信和运输成本的下降，距离变得越来越不重要。然而，贸易引力模型中随时间增长的距离系数表明，距离的作用增加而不是减少。这在本质上抓住了全球化之谜的概念。在这里，我们展示了国际贸易体系（ITS）的不稳定性为这个难题提供了一个简单的解决方案。我们认为，距离系数对应于它的分形维数。我们提供了两种独立的方法，盒计数法和空间选择模型，证实了这一说法。我们的结果让我们得出结论，以前解决这个难题的方法误解了贸易引力模型中距离系数的含义。
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分类信息：

一级分类：Physics        物理学
二级分类：Physics and Society        物理学与社会
分类描述：Structure, dynamics and collective behavior of societies and groups (human or otherwise). Quantitative analysis of social networks and other complex networks. Physics and engineering of infrastructure and systems of broad societal impact (e.g., energy grids, transportation networks).
社会和团体（人类或其他）的结构、动态和集体行为。社会网络和其他复杂网络的定量分析。具有广泛社会影响的基础设施和系统（如能源网、运输网络）的物理和工程。
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一级分类：Quantitative Finance        数量金融学
二级分类：General Finance        一般财务
分类描述：Development of general quantitative methodologies with applications in finance
通用定量方法的发展及其在金融中的应用
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