Technological Adaptation, Cities, and New Work
研究了集聚经济在新技术应用于生产中的作用，发现工人更可能在大学毕业生多、产业多样化的城市从事新工作，并提出了衡量城市间技术适应差异的新指标。
Where does adaptation to innovation take place? I present evidence on the role of agglomeration economies in the application of new knowledge to production. All else equal, workers are more likely to be observed in new work in locations initially dense in college graduates and industry variety. This pattern is consistent with economies from the geographic concentration of factors and markets related to technological adaptation. A main contribution is a new measure, based on revisions to occupation classifications, that characterizes cross-sectional differences across cities in technological adaptation. Worker-level results also provide new evidence on the skill bias of recent innovations. © 2011 The President and Fellows of Harvard College and the Massachusetts Institute of Technology.