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Carlino, Gerald; Kerr, William R. - National Bureau of Economic Research (NBER) - 2014

This chapter reviews academic research on the connections between agglomeration and innovation. We first describe the … conceptual distinctions between invention and innovation. We then describe how these factors are frequently measured in the data …, industrial diversity) that theoretical and empirical work link to innovation, and we discuss factors that help sustain these …

Persistent link: https://www.econbiz.de/10010885295

Local Industrial Conditions and Entrepreneurship: How Much of the Spatial Distribution Can We Explain?

Glaeser, Edward Ludwig; Kerr, William R. - National Bureau of Economic Research (NBER) - 2008

Why are some places more entrepreneurial than others? We use Census Bureau data to study local determinants of manufacturing startups across cities and industries. Demographics have limited explanatory power. Overall levels of local customers and suppliers are only modestly important, but new...

Persistent link: https://www.econbiz.de/10005714042

Clusters of Entrepreneurship

Glaeser, Edward Ludwig; Ponzetto, Giacomo A. M.; Kerr, … - National Bureau of Economic Research (NBER) - 2009

Employment growth is strongly predicted by smaller average establishment size, both across cities and across industries within cities, but there is little consensus on why this relationship exists. Traditional economic explanations emphasize factors that reduce entry costs or raise...

Persistent link: https://www.econbiz.de/10008548787

Agglomerative Forces and Cluster Shapes

Kerr, William R.; Kominers, Scott Duke - National Bureau of Economic Research (NBER) - 2010

We model spatial clusters of similar firms. Our model highlights how agglomerative forces lead to localized, individual connections among firms, while interaction costs generate a defined distance over which attraction forces operate. Overlapping firm interactions yield agglomeration clusters...

Persistent link: https://www.econbiz.de/10008777358

Entrepreneurship and Urban Growth: An Empirical Assessment with Historical Mines

Glaeser, Edward Ludwig; Kerr, Sari Pekkala; Kerr, William R. - National Bureau of Economic Research (NBER) - 2012

Measures of entrepreneurship, such as average establishment size and the prevalence of start-ups, correlate strongly with employment growth across and within metropolitan areas, but the endogeneity of these measures bedevils interpretation. Chinitz (1961) hypothesized that coal mines near...

Persistent link: https://www.econbiz.de/10010821933

A Time to Sow and a Time to Reap: Growth Based on General Purpose Technologies

Helpman, Elhanan; Trajtenberg, Manuel - National Bureau of Economic Research (NBER) - 1994

We develop a model of growth driven by successive improvements in 'General Purpose Technologies' (GPT's), such as the steam engine, electricity, or micro-electronics. Each new generation of GPT's prompts investments in complementary inputs, and impacts the economy after enough such compatible...

Persistent link: https://www.econbiz.de/10005248840

The Meaning of Patent Citations: Report on the NBER/Case-Western Reserve Survey of Patentees

Jaffe, Adam; Trajtenberg, Manuel; Fogarty, Michael S. - National Bureau of Economic Research (NBER) - 2000

A survey of recent patentees was conducted to elicit their perceptions regarding the importance of their inventions, the extent of their communication with other inventors, and the relationship of both importance and communication to observed patent citations. A cohort of 1993 patentees were...

Persistent link: https://www.econbiz.de/10005710621

Flows of Knowledge from Universities and Federal Labs: Modeling the Flowof Patent Citations Over Time and Across Institutional and Geographic Boundari

Jaffe, Adam; Trajtenberg, Manuel - National Bureau of Economic Research (NBER) - 1996

The extent to which new technological knowledge flows across institutional and national boundaries is a question of great importance for public policy and the modeling of economic growth. This paper develops a model of the process generating subsequent citations to patents as a lens for viewing...

Persistent link: https://www.econbiz.de/10005714300

The NBER Patent Citation Data File: Lessons, Insights and Methodological Tools

Hall, Bronwyn H; Jaffe, Adam; Trajtenberg, Manuel - National Bureau of Economic Research (NBER) - 2001

This paper describes the database on U.S. patents that we have developed over the past decade, with the goal of making it widely accessible for research. We present main trends in U. S. patenting over the last 30 years, including a variety of original measures constructed with citation data,...

Persistent link: https://www.econbiz.de/10005830003

Innovation in Israel 1968-97: A Comparative Analysis Using Patent Data

Trajtenberg, Manuel - National Bureau of Economic Research (NBER) - 1999

the israeli economy in the nineties and beyond. In this paper we present a close-up portrait of innovation in Israel for …

Persistent link: https://www.econbiz.de/10005580793