Nber Working Paper Series Minerva Unbound: Knowledge Stocks, Knowledge Flows and New Knowledge Production

The rate of regional growth of new knowledge in the field of nanotechnology, as measured by counts of articles and patents in the open-access digital library NanoBank, is shown to be positively affected both by the size of existing regional stocks of recorded knowledge in all scientific fields, and the extent to which tacit knowledge in all fields flows between institutions of different organizational types. The level of federal funding has a large, robust impact on both publication and patenting. The data provide further support for the cumulative advantage model of knowledge production, and for ongoing efforts to institutionalize channels through which cross-organizational collaboration may be achieved. Lynne G. Zucker University of California, Los Angeles Departments of Sociology & Public Policy UCLA Box 951551 Los Angeles, CA 90095-1551 and NBER [email protected] Michael R. Darby University of California, Los Angeles John E. Anderson Graduate School of Management 110 Westwood Plaza, Box 951481 Los Angeles, CA 90095-1481 and NBER [email protected] Jonathan Furner University of California, Los Angeles Department of Information Studies UCLA Box 951520 Los Angeles, CA 90095-1520 [email protected] Robert C. Liu Deloitte Consulting LLP Two California Plaza 350 S. Grand Ave. Suite 200 Los Angeles, California 90071-3462 [email protected] Hongyan Ma University of California, Los Angeles Department of Information Studies UCLA Box 951520 Los Angeles, CA 90095-1520 [email protected]