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Horizontale und vertikale Innovationen in einem semi-endogenen Wachstumsmodell mit Kapitalakkumulation

Listed author(s):
  • Wolfgang Kornprobst
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    Im semi-endogenen Wachstumsmodell von Li (2000) findet technischer Fortschritt statt, weil sowohl neue als auch qualitativ bessere Produkte erfunden werden. Allerdings ist Arbeit der einzige Produktionsfaktor in der Oekonomie, es gibt keinen akkumulierbaren Faktor (physisches Kapital). In der vorliegenden Arbeit wird aber argumentiert, dass Kapitalakkumulation eine wichtige Tatsache in der Realitaet ist. Das Modell von Li (2000) wird deshalb um Kapital als notwendigen Input in der Produktion erweitert, so dass Akkumulation moeglich wird. Anders betrachtet wird das wegweisende Romer(1990)-Modell verallgemeinert, in dem die Moeglichkeit von Qualitaetsverbesserungen bestehender Produkte (vertikale Innovationen) eingefuehrt wird. Damit kann "kreative Zerstoerung" im Schumpeterschen Sinne auftreten. Ausserdem werden durch diese Modifikation die Skaleneffekte aus dem Romer(1990)- Modell eliminiert. Schliesslich wird gezeigt, dass die "verkuerzte Form" des Modells identisch ist zu einem neoklassischen Wachstumsmodell, wie z.B. dem Solow-Modell mit Cobb-Douglas Produktionsfunktion. Es hat aber die mikrooekomomische Fundierung bezueglich F&E von semi-endogenen Wachstumsmodellen.

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    File Function: First version, 2007
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    Paper provided by Bavarian Graduate Program in Economics (BGPE) in its series Working Papers with number 033.

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    Length: 13 pages
    Date of creation: Nov 2007
    Handle: RePEc:bav:wpaper:033_kornprobst
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    1. Gene M. Grossman & Elhanan Helpman, 1991. "Quality Ladders in the Theory of Growth," Review of Economic Studies, Oxford University Press, vol. 58(1), pages 43-61.
    2. Jean Tirole, 1988. "The Theory of Industrial Organization," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262200716, January.
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    4. Miguel-Angel Martín & Agustín Herranz, 2004. "Human capital and economic growth in Spanish regions," International Advances in Economic Research, Springer;International Atlantic Economic Society, vol. 10(4), pages 257-264, November.
    5. Alwyn Young, 1998. "Growth without Scale Effects," Journal of Political Economy, University of Chicago Press, vol. 106(1), pages 41-63, February.
    6. Charles I. Jones, 1995. "Time Series Tests of Endogenous Growth Models," The Quarterly Journal of Economics, Oxford University Press, vol. 110(2), pages 495-525.
    7. Ben R. Craig & William E. Jackson & James B. Thomson, 2004. "On SBA-guaranteed lending and economic growth," Working Paper 0403, Federal Reserve Bank of Cleveland.
    8. repec:kap:iaecre:v:10:y:2004:i:4:p:257-264 is not listed on IDEAS
    9. Solow, Robert M., 2005. "Reflections on Growth Theory," Handbook of Economic Growth,in: Philippe Aghion & Steven Durlauf (ed.), Handbook of Economic Growth, edition 1, volume 1, chapter 0, pages 3-10 Elsevier.
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