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On the single and multiple time trends representation of technical change
Department of Economics, University of Gothenburg, S-411 80 Gothenburg, Sweden.ORCID iD: 0000-0002-7902-4683
1996 (English)In: Applied Economics Letters, ISSN 1350-4851, E-ISSN 1466-4291, Vol. 3, no 8, p. 495-499Article in journal (Refereed) Published
Abstract [en]

This paper is concerned with the estimation of production functions and measurement of the rate of technical change. Multiple time trends are introduced as an alternative to the single time trend representation of technical change. The underlying technology is represented by Cobb-Douglas and translog functional forms. Random effects models with homoscedastic variances is assumed. The models are estimated using the generalized least squares method. The data used are a large rotating panel data set from Swedish crop producer farms over the period 1976-1988. The empirical results show that a single or multiple time trends representation yield different time behaviour of technical change. The latter is found to perform much better.

Place, publisher, year, edition, pages
1996. Vol. 3, no 8, p. 495-499
Keywords [en]
agricultural technology; methodological evaluation; modelling approach; production function; technological change; time trends, Sweden
National Category
Economics
Identifiers
URN: urn:nbn:se:hj:diva-24486Scopus ID: 2-s2.0-0030439428OAI: oai:DiVA.org:hj-24486DiVA, id: diva2:743116
Available from: 2014-09-03 Created: 2014-09-01 Last updated: 2017-12-05Bibliographically approved

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Heshmati, Almas

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