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Investissement et rationnement sur le marché tunisien des importations de biens d'équipement

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  • Riadh Ben Jelili

Abstract

[eng] Disequilibria and Quantitative Adjustment on the Tunisian Intermediate and Capital Goods Import Market: An Estimate Using the Simulated Pseudo-Maximum Likelihood Method . byRiadhBenJelili . This article looks at a market that is particularly important to investment projects in Tunisia: the intermediate and capital goods market. We concentrate on a short-term outlook (with prices considered to be exogenous and fixed) and develop a disequilibrium model for the Tunisian intermediate and capital goods import market. This model integrates both supply and demand constraints. Furthermore, we introduce the possibility of investment behaviour adjusting to the disequilibrium situation observed on the market in question. By estimating this model using the simulated pseudo maximum likelihood method, we highlight the role of quantitative adjustments in reducing disequilibria. However, the adjustment is not total and the hypothesis of fixed prices would appear to be rather extreme. . [fre] Investissement et rationnement sur le marché tunisien des importations de biens d'équipement . par Riadh Ben Jelili . Dans cet article, nous nous intéressons à un marché particulièrement important pour la réalisation des projets d'investissement en Tunisie. Il s'agit du marché des importations de biens intermédiaires et d'équipement (BIE). Nous nous plaçons dans un horizon de court terme (les prix sont supposés exogènes et fixés), et développons un modèle de déséquilibre du marché tunisien des importations de BIE, qui intègre aussi bien les contraintes d'offre que les contraintes de demande. Nous introduisons en outre la possibilité d'ajustement du comportement d'investissement à la situation du déséquilibre observé sur le marché en question. L'estimation de ce modèle par le pseudo-maximum de vraisemblance simulé a permis de mettre en évidence le rôle des ajustements quantitatifs dans la résorption des déséquilibres. Cependant, cet ajustement n'est pas total et l'hypothèse de prix fixes semble être excessive. [spa] Desequilibrios y ajuste cuantitativo en el mercado tunecino de las importaciones de bienes intermedios y de eqmpo: estimaciôn por el método de pseudomâximo de verosimilitud simulado . por Riadh Ben Jelili . En este articulo, nos dedicamos al estudio de un mercado particularmente importante para la realizaciôn de los proyectos de inversion en Tunez. Se trata del mercado de las importaciones de bienes intermedios y de equipo ( BIE ). Se considéra para el estudio un horizonte de corto plazo (se supone que los precios son fijos y exôgenos ), y desarrollamos un modelo de desequilibrio del mercado tunicino de las importaciones de BIE, que intégra tanto las restriciones de oferta como las restricciones de demanda. Introducimos ademâs la posibilidad de un ajuste del comportamiento de la inversion a la situation de desequilibrio observado en este mercado. La estimaciôn de este modelo por el pseudomâximo de verosimilitud simulado ha permitido poner en evidencia el papel de los ajustes cuantitativos en el restablecimiento de los equilibrios. Sin embargo, este ajuste no es completo y la hipôtesis de precios fijos parece ser excesiva. [ger] Ungleichgewichte und quantitative Anpassung auf dem tunesischen Markt der Einfuhren von Vorleistungs- und Anlagegiitern: Schatzung durch den simulierten Pseudo-Maximum-Likelihood-Ansatz . von Riadh Ben Jelili . Unser Intéresse gilt in diesem Artikel einem Markt, der fur die Durchfuhrung der Investitionsvorhaben in Tunesien besonders wichtig ist. Es handelt sich um den Markt der Einfuhren von Vorleistungs- und Anlagegiitern. Wir versetzen uns in einen kurzfristigen Zeithorizont (es wird von exogenen und festen Preisen ausgegangen) und entwickeln ein Ungleichgewichtsmodell des tunesischen Marktes der Einfuhren von Vorleistungs- und Anlagegiitern, bei dem sowohl die Angebots- als auch die Nachfragezwange beriicksichtigt werden. Ferner beziehen wir die Môglichkeit ein, daB sich das Investitionsverhalten der Situation des Ungleichgewichtes anpaBt, das auf dem betreffenden Markt beobachtet wird. Anhand der Schatzung dieses Modells durch den simulierten Pseudo-Maximum-Likelihood- Ansatz konnte die Rolle der quantitativen Anpassungen bei der Beseitigung der Ungleichgewichte aufgezeigt werden. Es handelt sich allerdings um keine vollkommene Anpassung, und die Hypothèse fester Preise scheint iiberzogen zu sein.

Suggested Citation

  • Riadh Ben Jelili, 1995. "Investissement et rationnement sur le marché tunisien des importations de biens d'équipement," Économie et Prévision, Programme National Persée, vol. 119(3), pages 43-58.
  • Handle: RePEc:prs:ecoprv:ecop_0249-4744_1995_num_119_3_5729
    DOI: 10.3406/ecop.1995.5729
    Note: DOI:10.3406/ecop.1995.5729
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    1. Taylor, Lance, 1981. "South-north trade and southern growth : Bleak prospects from the structuralist point of view," Journal of International Economics, Elsevier, vol. 11(4), pages 589-602, November.
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    6. Benjelili, R. & Mihoubi,F., 1993. "Estimation des modèles de déséquilibre dynamiques : une application de la méthode du pseudo-maximum de vraisemblance," LATEC - Document de travail - Economie (1991-2003) 1993-04, LATEC, Laboratoire d'Analyse et des Techniques EConomiques, CNRS UMR 5118, Université de Bourgogne.
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