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The Need for Theoretically Consistent Efficiency Frontiers AgEcon
Sauer, Johannes; Hockmann, Heinrich.
The availability of efficiency estimation software –freely distributed via the internet and relatively easy to use –recently inflated the number of corresponding applications. The resulting efficiency estimates are often used without a critical assessment with respect to the literature on theoretical consistency, flexibility and the choice of the appropriate functional form. The robustness of policy suggestions based on inferences from efficiency measures nevertheless crucially depends on theoretically well-founded estimates. This paper addresses stochastic efficiency measurement by critically reviewing the theoretical consistency of recently published technical efficiency estimates. The results confirm the need for a posteriori checking the regularity of...
Tipo: Conference Paper or Presentation Palavras-chave: Functional form; Stochastic efficiency analysis; Theoretical consistency; Research and Development/Tech Change/Emerging Technologies; C51; D24; Q12.
Ano: 2005 URL: http://purl.umn.edu/24497
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Should farmers invest in financial assets as a risk management strategy? Some evidence from New Zealand AgEcon
Nartea, Gilbert V.; Webster, Paul.
This study explores the potential for risk reduction by New Zealand farmers through the diversification of their farm asset portfolios to include financial investments such as ordinary industrial shares, government bonds and bank bills. Low correlations between rates of return on farm and these financial assets suggest that significant reduction of income variability might follow their inclusion in farmers’ portfolios. Stochastic efficiency analysis is used to analyse alternative portfolios of ordinary shares, government bonds and bank bills and New Zealand farmland, using coefficients of absolute risk aversion derived from a negative exponential utility function. The results suggest that those farmers showing high degrees of risk aversion would gain...
Tipo: Article Palavras-chave: Financial assets; NZ farmland; Risk management; Stochastic efficiency analysis; Agricultural and Food Policy; Risk and Uncertainty.
Ano: 2008 URL: http://purl.umn.edu/118538
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