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Estimating Farm Efficiency in the Presence of Double Heteroscedasticity Using Panel Data
Hadri, Kaddour; Guermat, Cherif; Whittaker, Julie - In: Journal of Applied Economics VI (2003) November, pp. 255-268
inefficiencies are sensitive to specification errors. One source of such errors is heteroscedasticity. This paper addresses this … issue by extending the Hadri (1999) correction for heteroscedasticity to stochastic production frontiers and to panel data …. It is argued that heteroscedasticity within an estimation can have a significant effect on results, and that correcting …
Persistent link: https://www.econbiz.de/10005168928
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Efficiency, Environmental Contaminants and Farm Size: Testing for Links Using Stochastic Production Frontiers.
Hadri, Kaddour; Whittaker, Julie - In: Journal of Applied Economics II (1999) November, pp. 337-356
This paper investigates whether there is any relationship between farm size, technical efficiency and the use of agrochemicals which are potentially environmentally contaminating. These questions are pertinent in the context of current EU policy decisions. Using two models of stochastic frontier...
Persistent link: https://www.econbiz.de/10005627105
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Efficiency, Environmental Contaminants and Farm Size : Testing for Links Using Stochastic Production Frontiers
Hadri, Kaddour; Whittaker, Julie M. - 2004
This paper investigates whether there is any relationship between farm size, technical efficiency and the use of agrochemicals which are potentially environmentally contaminating. These questions are pertinent in the context of current EU policy decisions. Using two models of stochastic frontier...
Persistent link: https://www.econbiz.de/10014029213
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A comparison of panel data models in estimating technical efficiency
Rashidghalam, Masoomeh; Heshmati, Almas; Dashti, Ghader; … - 2016
The purpose of this paper is two-fold. First, it compares the performance of various panel data models in estimating technical efficiency in production. Second, it applies various stochastic frontier panel data models to estimate the technical efficiency of Iran's cotton production and to...
Persistent link: https://www.econbiz.de/10011454436
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A Comparison of Panel Data Models in Estimating Technical Efficiency
Rashidghalam, Masoomeh - 2016
The purpose of this paper is two-fold. First, it compares the performance of various panel data models in estimating technical efficiency in production. Second, it applies various stochastic frontier panel data models to estimate the technical efficiency of Iran's cotton production and to...
Persistent link: https://www.econbiz.de/10012996535
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Firms' export performance: a fractional econometric approach
Faria, Samuel; Rebelo, João; Gouveia, Sofia - In: Journal of business economics and management 21 (2020) 2, pp. 521-542
Export activities have become crucial to firms' competitiveness, with determinants of export performance being a challenging field of research, since there is no consensus regarding the explained and explanatory variables or on the econometric methods to be used. Using a panel data of Portuguese...
Persistent link: https://www.econbiz.de/10012197610
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A Comparison of Panel Data Models in Estimating Technical Efficiency
Rashidghalam, Masoomeh; Heshmati, Almas; Dashti, Ghader; … - 2016
The purpose of this paper is two-fold. First, it compares the performance of various panel data models in estimating technical efficiency in production. Second, it applies various stochastic frontier panel data models to estimate the technical efficiency of Iran's cotton production and to...
Persistent link: https://www.econbiz.de/10011479325
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Panel Data Nonparametric Estimation of Production Risk and Risk Preferences: An Application to Polish Dairy Farms
Czekaj, Tomasz Gerard; Henningsen, Arne - Institut for Fødevare- og Ressourceøkonomi, … - 2013
We apply nonparametric panel data kernel regression to investigate production risk, out-put price uncertainty, and risk attitudes of Polish dairy farms based on a firm-level unbalanced panel data set that covers the period 2004–2010. We compare different model specifications and different...
Persistent link: https://www.econbiz.de/10010709599
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Comparing Parametric and Nonparametric Regression Methods for Panel Data: the Optimal Size of Polish Crop Farms
Czekaj, Tomasz Gerard; Henningsen, Arne - Institut for Fødevare- og Ressourceøkonomi, … - 2012
Translog functional form implies an implausible linear relationship between the (logarithmic) firm size and the elasticity of …
Persistent link: https://www.econbiz.de/10010583806
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Panel Data Specifications in Nonparametric Kernel Regression: An Application to Production Functions
Czekaj, Tomasz; Henningsen, Arne - Institut for Fødevare- og Ressourceøkonomi, … - 2013
We discuss nonparametric regression models for panel data. A fully nonparametric panel data specification that uses the time variable and the individual identifier as additional (categorical) explanatory variables is considered to be the most suitable. We use this estimator and conventional...
Persistent link: https://www.econbiz.de/10010822723