Task Trade and the Size Distribution of Cities
Task Trade and the Size Distribution of Cities
复制标题
DOI：
--
复制
发表时间：
2013-04
期刊：
影响因子：
--
通讯作者：
Kohei Nagamachi
中科院分区：
文献类型：
--
作者：
Kohei Nagamachi
考虑到任务贸易在城市环境中的重要性日益增加，本文提供了一个城市系统的模型，在这个模型中，事先相同的地点专门从事技能强度不同的任务，从而导致城市的独特规模分布。给出了幂律包含齐普夫定律的充要条件，定量分析表明，该模型与美国城市规模分布是一致的。本文还进行了福利分析，认为在自由放任政策下，过度集聚会带来相当大的福利损失。
a€€a€€ Taking account of the increasing importance of task trade in urban contexts, this paper provides a model of a system of cities in which ex ante identical locations specialize in tasks that differ in their skill intensity, resulting in a unique size distribution of cities. The necessary and sufficient condition for a power law including Zipf's law is derived, and a quantitative analysis shows that the model is consistent with the size distribution of U.S. cities. A welfare analysis is also conducted, suggesting excess agglomeration with sizable welfare loss under laissez-faire.