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Nursery Cities: Urban diversity, process innovation, and the life-cycle of products

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Author Info
Gilles Duranton
Diego Puga

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Abstract

This paper develops microfoundations for the role that diversified cities play in fostering innovation. A simple model of process innovation is proposed, where firms learn about their ideal production process by making prototypes. We build around this a dynamic general-equilibrium model, and derive conditions under which diversified and specialised cities coexist. New products are developed in diversified cities, trying processes borrowed from different activities. On finding their ideal process, firms switch to mass production and relocate to specialised cities where production costs are lower. We find strong evidence of this pattern in establishment relocations across French employment areas 1993-1996.

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File URL: http://diegopuga.org/papers/nursery.pdf
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Publisher Info
Paper provided by University of Toronto, Department of Economics in its series Working Papers with number dpuga-00-01.

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Length: 28 pages
Date of creation: 11 Jan 2000
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Handle: RePEc:tor:tecipa:dpuga-00-01

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Postal: 150 St. George Street, Toronto, Ontario
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Related research
Keywords: nursery cities diversity specialisation innovation learning life-cycle

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Find related papers by JEL classification:
R30 - Urban, Rural, and Regional Economics - - Production Analysis and Firm Location - - - General
O31 - Economic Development, Technological Change, and Growth - - Technological Change - - - Innovation and Invention: Processes and Incentives
D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search, Learning, and Information

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  1. Gilles Duranton & Diego Puga, 2001. "Nursery Cities: Urban Diversity, Process Innovation, and the Life Cycle of Products," American Economic Review, American Economic Association, vol. 91(5), pages 1454-1477, December. [Downloadable!] (restricted)
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  2. Flatters, Frank & Henderson, Vernon & Mieszkowski, Peter, 1974. "Public goods, efficiency, and regional fiscal equalization," Journal of Public Economics, Elsevier, vol. 3(2), pages 99-112, May. [Downloadable!] (restricted)
  3. G Duranton & D Puga, 1999. "Diversity and Specialisation in Cities: Why, Where and When does it Matter?," CEP Discussion Papers 0433, Centre for Economic Performance, LSE. [Downloadable!]
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  4. Fujita, Masahisa, 1988. "A monopolistic competition model of spatial agglomeration : Differentiated product approach," Regional Science and Urban Economics, Elsevier, vol. 18(1), pages 87-124, February. [Downloadable!] (restricted)
  5. Eaton, Jonathan & Eckstein, Zvi, 1997. "Cities and growth: Theory and evidence from France and Japan," Regional Science and Urban Economics, Elsevier, vol. 27(4-5), pages 443-474, August. [Downloadable!] (restricted)
    Other versions:
  6. J. Vernon Henderson, 1994. "Externalities and Industrial Development," NBER Working Papers 4730, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  7. Jovanovic, B. & Macdonald, G.M., 1988. "Competitive Diffusion," RCER Working Papers 160, University of Rochester - Center for Economic Research (RCER).
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  8. Starrett, David A., 1974. "Principles of optimal location in a large homogeneous area," Journal of Economic Theory, Elsevier, vol. 9(4), pages 418-448, December. [Downloadable!] (restricted)
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  12. Richard J. Arnott & Joseph E. Stiglitz, 1980. "Aggregate Land Rents, Expenditure on Public Goods, and Optimal City Size," NBER Reprints 0102, National Bureau of Economic Research, Inc.
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  13. Henderson, Vernon & Mitra, Arindam, 1996. "The new urban landscape: Developers and edge cities," Regional Science and Urban Economics, Elsevier, vol. 26(6), pages 613-643, December. [Downloadable!] (restricted)
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  15. Glenn Ellison & Edward L. Glaeser, 1994. "Geographic Concentration in U.S. Manufacturing Industries: A Dartboard Approach," NBER Working Papers 4840, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  16. Baldwin, Richard E. & Forslid, Rikard, 2000. "Trade liberalisation and endogenous growth: A q-theory approach," Journal of International Economics, Elsevier, vol. 50(2), pages 497-517, April. [Downloadable!] (restricted)
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  17. Feldman, Maryann P. & Audretsch, David B., 1999. "Innovation in cities:: Science-based diversity, specialization and localized competition," European Economic Review, Elsevier, vol. 43(2), pages 409-429, February. [Downloadable!] (restricted)
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  18. Henderson, Vernon & Becker, Randy, 2000. "Political Economy of City Sizes and Formation," Journal of Urban Economics, Elsevier, vol. 48(3), pages 453-484, November. [Downloadable!] (restricted)
  19. Glaeser, Edward L & Hedi D. Kallal & Jose A. Scheinkman & Andrei Shleifer, 1992. "Growth in Cities," Journal of Political Economy, University of Chicago Press, vol. 100(6), pages 1126-52, December. [Downloadable!] (restricted)
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    • Edward L. Glaeser & Hedi D. Kallal & Jose A. Scheinkman & Andrei Shleifer, 1991. "Growth in Cities," NBER Working Papers 3787, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  20. Henderson, J V, 1974. "The Sizes and Types of Cities," American Economic Review, American Economic Association, vol. 64(4), pages 640-56, September. [Downloadable!] (restricted)
  21. Helsley, Robert W. & Strange, William C., 1990. "Matching and agglomeration economies in a system of cities," Regional Science and Urban Economics, Elsevier, vol. 20(2), pages 189-212, September. [Downloadable!] (restricted)
  22. Vernon Henderson, 1999. "Marshall's Economies," NBER Working Papers 7358, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  23. Robert W. Helsley & William C. Strange, 1997. "Limited Developers," Canadian Journal of Economics, Canadian Economics Association, vol. 30(2), pages 329-48, May. [Downloadable!] (restricted)
  24. Henderson, Vernon & Kuncoro, Ari & Turner, Matt, 1995. "Industrial Development in Cities," Journal of Political Economy, University of Chicago Press, vol. 103(5), pages 1067-90, October. [Downloadable!] (restricted)
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  25. Tobin, James, 1969. "A General Equilibrium Approach to Monetary Theory," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 1(1), pages 15-29, February. [Downloadable!] (restricted)
  26. J. Vernon Henderson & Jacques-Francois Thisse, 2001. "On Strategic Community Development," Journal of Political Economy, University of Chicago Press, vol. 109(3), pages 546-569, June. [Downloadable!] (restricted)
  27. Jovanovic, Boyan, 1982. "Selection and the Evolution of Industry," Econometrica, Econometric Society, vol. 50(3), pages 649-70, May. [Downloadable!] (restricted)
  28. Fujita, Masahisa & Thisse, Jacques-François, 1996. "Economics of Agglomeration," CEPR Discussion Papers 1344, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
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  29. Glenn Ellison & Edward L. Glaeser, 1999. "The Geographic Concentration of Industry: Does Natural Advantage Explain Agglomeration?," American Economic Review, American Economic Association, vol. 89(2), pages 311-316, May. [Downloadable!] (restricted)
    Other versions:
  30. Henderson, Vernon, 1997. "Externalities and Industrial Development," Journal of Urban Economics, Elsevier, vol. 42(3), pages 449-470, November. [Downloadable!] (restricted)
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