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Knowledge spillovers and the equilibrium location of vertically linked industries: the return of the black hole

Using a generalised version of the Venables (1996) model, this paper explores the relative locations of two vertically linked sectors with knowledge spillovers. Analytical investigation shows that the dynamic properties of the Venables model are significantly affected by the presence of spillovers. In particular, the own-cost reduction effects at low transport costs can be so strong that runaway agglomeration phenomenon appears in a manner consistent with the “black hole” concept found in the literature. However, the assumption that because information decays over space means that these black hole dynamics are endogenous to the model and disappear when transport costs are high enough. Importantly, the location predictions obtained in simulations of the model are consistent with the empirical finding that industrials sector that benefit from spillovers are typically more agglomerated than sector that do not benefit from such spillovers.

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Paper provided by Observatoire Francais des Conjonctures Economiques (OFCE) in its series Documents de Travail de l'OFCE with number 2008-05.

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Date of creation: 2008
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Handle: RePEc:fce:doctra:0805
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  1. Gersbach, Hans & Schmutzler, Armin, 1999. "External spillovers, internal spillovers and the geography of production and innovation," Regional Science and Urban Economics, Elsevier, vol. 29(6), pages 679-696, November.
  2. Pierre-Philippe Combes & Gilles Duranton, 2001. "Labor pooling, labor poaching and spatial clustering," LSE Research Online Documents on Economics 20103, London School of Economics and Political Science, LSE Library.
  3. Venables, Anthony J, 1996. "Equilibrium Locations of Vertically Linked Industries," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 37(2), pages 341-59, May.
  4. Ottaviano, Gianmarco & Robert-Nicoud, Frédéric, 2004. "The 'Genome' of NEG Models with Vertical Linkages: A Positive and Normative Synthesis," CEPR Discussion Papers 4600, C.E.P.R. Discussion Papers.
  5. Duranton, Gilles & Puga, Diego, 2004. "Micro-foundations of urban agglomeration economies," Handbook of Regional and Urban Economics, in: J. V. Henderson & J. F. Thisse (ed.), Handbook of Regional and Urban Economics, edition 1, volume 4, chapter 48, pages 2063-2117 Elsevier.
  6. Audretsch, David B. & Feldman, Maryann P., 2004. "Knowledge spillovers and the geography of innovation," Handbook of Regional and Urban Economics, in: J. V. Henderson & J. F. Thisse (ed.), Handbook of Regional and Urban Economics, edition 1, volume 4, chapter 61, pages 2713-2739 Elsevier.
  7. Frédéric Robert-Nicoud, 2005. "The structure of simple 'New Economic Geography' models (or, On identical twins)," Journal of Economic Geography, Oxford University Press, vol. 5(2), pages 201-234, April.
  8. Acs, Zoltan J & Audretsch, David B, 1988. "Innovation in Large and Small Firms: An Empirical Analysis," American Economic Review, American Economic Association, vol. 78(4), pages 678-90, September.
  9. Corinne Autant-Bernard, 2001. "The Geography Of Knowledge Spillovers And Technological Proximity," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 10(4), pages 237-254.
  10. Masahisa Fujita & Paul Krugman & Anthony J. Venables, 2001. "The Spatial Economy: Cities, Regions, and International Trade," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262561476, June.
  11. Hans Gersbach & Armin Schmutzler, 1999. "Endogenous Spillovers and Incentives to Innovate," SOI - Working Papers 9902, Socioeconomic Institute - University of Zurich.
  12. Yasuko Ishiguro, 2005. "A consideration of the “no-black-hole” condition," The Annals of Regional Science, Springer, vol. 39(1), pages 25-34, 03.
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