Industrial renewal in the 21st century: evidence from US cities
利用美国2000-2010年官方产业分类修订，研究新产业在哪些城市出现及原因，发现新产业主要出现在人力资本丰富和技能需求相似的城市，对城市产业政策制定者有用。
Industrial renewal in the 21st century: evidence from US cities. <i>Regional Studies.</i> Where and why do new industries emerge? Using revisions of official industrial classifications, this paper documents the appearance of new industries in the US economy between 2000 and 2010 stemming directly from technological advances. Examining differences in new industry creation across cities, this paper shows that new industries mainly emerge in human capital abundant places and cities that specialize in industries that demand similar skills. Instrumental variables estimates that exploit the location of 19th-century land-grant colleges as an instrument for contemporary differences in human capital assigns a causal interpretation to these results.