Abstract
Using over 200,000 U.S. patent citations, we test whether knowledge transfers in the transportation sector are sensitive to distance, and whether that sensitivity has changed over time. Controlling for self-citation by inventor, assignee and examiner, multivariate regression analysis shows that physical distance is becoming less important for spillovers with time, albeit in a nonlinear fashion.
Special thanks to a team led by Nicole Gurley for their patience while geo-coding, to Matt Gottfried for his continued patience with our GIS-based questions, and generous support from Colorado College in the forms of the Schlessman Professorship, a Faculty Grant, a Mrachek Research Fellowship, a Mellon Research Block and assistance from Colorado College’s Chapman Fund.
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Moore, J.A., Johnson, D.K.N., Lybecker, K.M. (2013). Planes, Trains and Automobiles: The Importance of Location for Knowledge Transfer in the Transportation Sector. In: Howlett, R., Gabrys, B., Musial-Gabrys, K., Roach, J. (eds) Innovation through Knowledge Transfer 2012. Smart Innovation, Systems and Technologies, vol 18. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-34219-6_17
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DOI: https://doi.org/10.1007/978-3-642-34219-6_17
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