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

Author

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  • Wolfgang Kornprobst

Abstract

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.

Suggested Citation

  • Wolfgang Kornprobst, 2007. "Horizontale und vertikale Innovationen in einem semi-endogenen Wachstumsmodell mit Kapitalakkumulation," Working Papers 033, Bavarian Graduate Program in Economics (BGPE).
    • Handle: RePEc:bav:wpaper:033_kornprobst
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    References listed on IDEAS

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    More about this item

    Keywords

    semi-endogenous growth; Schumpeterian models of growth; Solow model;
    All these keywords.

    JEL classification:

    • O30 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - General
    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
    • O41 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - One, Two, and Multisector Growth Models

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