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dc.contributor.authorJohnson, Daniel K.N.en_US
dc.contributor.authorMareva, Milenaen_US
dc.date.accessioned2009-01-29T15:51:04Z-
dc.date.available2009-01-29T15:51:04Z-
dc.date.issued2002en_US
dc.identifier.urihttp://hdl.handle.net/10419/23232-
dc.description.abstractUsing 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_US
dc.language.isoengen_US
dc.publisheren_US
dc.relation.ispartofseriesWorking Papers / Wellesley College, Department of Economics 2002,01en_US
dc.subject.jelN9en_US
dc.subject.jelO3en_US
dc.subject.jelR1en_US
dc.subject.jelL6en_US
dc.subject.ddc330en_US
dc.subject.stwBiotechnische Industrieen_US
dc.subject.stwInnovationen_US
dc.subject.stwPatenten_US
dc.subject.stwSpillover-Effekten_US
dc.subject.stwWissenstransferen_US
dc.subject.stwRegionale Konzentrationen_US
dc.subject.stwSch├Ątzungen_US
dc.subject.stwUSAen_US
dc.titleIt?s a Small(er) World: The Role of Geography and Networks in Biotechnology Innovationen_US
dc.typeWorking Paperen_US
dc.identifier.ppn377341185en_US
dc.rightshttp://www.econstor.eu/dspace/Nutzungsbedingungen-
Appears in Collections:Working Papers, Department of Economics, Wellesley College

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