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https://hdl.handle.net/10419/23232
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Johnson, Daniel K.N. | en |
dc.contributor.author | Mareva, Milena | en |
dc.date.accessioned | 2009-01-29T15:51:04Z | - |
dc.date.available | 2009-01-29T15:51:04Z | - |
dc.date.issued | 2002 | - |
dc.identifier.uri | http://hdl.handle.net/10419/23232 | - |
dc.description.abstract | Using patent citation data for the U.S., we test whether knowledge spillovers in biotechnology are sensitive to distance. Controlling for self-citation by inventor, assignee and examiner, cohort-based regression analysis shows that spillovers are local but that distance is becoming less important with time. Network analysis paints a picture of a stable network between states, but a changing environment between individual actors, with a growing importance of connectedness. The popular maxim that everyone is connected by six degrees of separation is tested with surprising results. | en |
dc.language.iso | eng | en |
dc.publisher | |aWellesley College, Department of Economics |cWellesley, MA | en |
dc.relation.ispartofseries | |aWellesley College Working Paper |x2002-01 | en |
dc.subject.jel | N9 | en |
dc.subject.jel | O3 | en |
dc.subject.jel | R1 | en |
dc.subject.jel | L6 | en |
dc.subject.ddc | 330 | en |
dc.subject.stw | Biotechnische Industrie | en |
dc.subject.stw | Innovation | en |
dc.subject.stw | Patent | en |
dc.subject.stw | Spillover-Effekt | en |
dc.subject.stw | Wissenstransfer | en |
dc.subject.stw | Regionale Konzentration | en |
dc.subject.stw | Schätzung | en |
dc.subject.stw | USA | en |
dc.title | It's a Small(er) World: The Role of Geography and Networks in Biotechnology Innovation | - |
dc.type | Working Paper | en |
dc.identifier.ppn | 377341185 | en |
dc.rights | http://www.econstor.eu/dspace/Nutzungsbedingungen | en |
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