The Experts below are selected from a list of 24999 Experts worldwide ranked by ideXlab platform
Anne Stenger - One of the best experts on this subject based on the ideXlab platform.
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How timber harvesting and biodiversity are managed in uneven-aged forests
2012Co-Authors: Max Bruciamacchie, Serge Garcia, Anne StengerAbstract:This paper investigates the joint production of timber and biodiversity by non-industrial private forest owners using a micro-econometric household production model. The objective is to explain the relationships between harvesting, timber price and the diversity of tree species. A two-step estimation procedure is implemented by fi rst estimating the diversity demand Equation and then thetimber Supply Equation in which the predicted value of diversity is a regressor. From a database of uneven-aged forests in France, we use cluster-sample econometric methods for an error component structure allowing for a multi-species framework. Results show that timber and species diversity are substitutes and that timber price positively a ffects diversity.
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How timber harvesting and biodiversity are managed in uneven-aged forests: a cluster-sample econometric approach
2006Co-Authors: Max Bruciamacchie, Serge Garcia, Anne StengerAbstract:This paper investigates the joint production of timber and biodiversity by non-industrial private forest owners using a micro-econometric household production model. The objective of the paper is to explain the relationships between harvest strategies, timber price and the observed diversity of trees. To do so, we analyze (1) forest owners' demand of species diversity and their timber supplies, (2) the jointness in timber and nontimber products. We use a database of uneven-aged forests in France for which several economic and ecological variables are regularly collected. We use cluster-sample methods to simulate the forest owner in a multi-product framework where the di_erent products and the timber prices depend on species, tree diameter and timber quality. We estimate a two-step model by reporting the predicted value of demand in tree diversity in the timber Supply Equation. Our results show that timber and tree diversity are substitutes but that timber price positively affects tree diversity.
Alastair R. Hall - One of the best experts on this subject based on the ideXlab platform.
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Panel Data Estimation of Labour Supply Equations for Dutch Dairy Farmers
2005Co-Authors: Daan L. Ooms, Alastair R. HallAbstract:This research focuses on the estimation of labour Supply Equations for Dutch dairy farmers. Off-farm labour Supply is characterised by the fact that only half of the farm households Supply off-farm labour. This results in a sample selection estimation problem that has to be taken into account in estimation. In this research we use the panel data sample selection estimation method of Wooldridge (1995) to estimate the off-farm labour Supply Equation. Simulation results suggest that the decoupledness assumption of direct income paymenst in CAP reform might hold. At least there is a negligible effect through labour Supply.
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EU policy reform simulation based on panel data estimation of on- and off-farm labour Supply Equations for Dutch dairy farmers
2005Co-Authors: Daan L. Ooms, Alastair R. HallAbstract:This research focuses on the estimation of labour Supply Equations for Dutch dairy farmers that are suitable for policy simulations. Data availability leads to the fact that we can not estimate structural labour Supply Equations. We show how to derive reduced form Equations suitable for policy simulations. In this research we use the panel data sample selection estimation approach of Kyriazidou (1997) and Wooldridge (1995) to estimate the off-farm labour Supply Equation. The two lead to different estimation results and different simulation results based on these.
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On- and Off-Farm Labour Supply of Dutch Dairy Farmers: Estimation and Policy Simulations
2005Co-Authors: Daan L. Ooms, Alastair R. HallAbstract:This research focuses on the effect of decoupled payments on labour Supply of Dutch dairy farmers. Data availability leads to the fact that we can not estimate structural labour Supply Equations. We show how to derive reduced form Equations suitable for policy simulations. We use the panel data sample selection estimation approach Wooldridge (1995) to estimate the off-farm labour Supply Equation. This method is based on Mundlak's (1978) linear panel data estimation approach, which we use to estimate the on-farm labour Supply Equations. Even though, simulations show a significant negative effect of decoupled payments on labour Supply, the economic significance of this effect is very limited.
Max Bruciamacchie - One of the best experts on this subject based on the ideXlab platform.
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How timber harvesting and biodiversity are managed in uneven-aged forests
2012Co-Authors: Max Bruciamacchie, Serge Garcia, Anne StengerAbstract:This paper investigates the joint production of timber and biodiversity by non-industrial private forest owners using a micro-econometric household production model. The objective is to explain the relationships between harvesting, timber price and the diversity of tree species. A two-step estimation procedure is implemented by fi rst estimating the diversity demand Equation and then thetimber Supply Equation in which the predicted value of diversity is a regressor. From a database of uneven-aged forests in France, we use cluster-sample econometric methods for an error component structure allowing for a multi-species framework. Results show that timber and species diversity are substitutes and that timber price positively a ffects diversity.
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How timber harvesting and biodiversity are managed in uneven-aged forests: a cluster-sample econometric approach
2006Co-Authors: Max Bruciamacchie, Serge Garcia, Anne StengerAbstract:This paper investigates the joint production of timber and biodiversity by non-industrial private forest owners using a micro-econometric household production model. The objective of the paper is to explain the relationships between harvest strategies, timber price and the observed diversity of trees. To do so, we analyze (1) forest owners' demand of species diversity and their timber supplies, (2) the jointness in timber and nontimber products. We use a database of uneven-aged forests in France for which several economic and ecological variables are regularly collected. We use cluster-sample methods to simulate the forest owner in a multi-product framework where the di_erent products and the timber prices depend on species, tree diameter and timber quality. We estimate a two-step model by reporting the predicted value of demand in tree diversity in the timber Supply Equation. Our results show that timber and tree diversity are substitutes but that timber price positively affects tree diversity.
Daan L. Ooms - One of the best experts on this subject based on the ideXlab platform.
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Panel Data Estimation of Labour Supply Equations for Dutch Dairy Farmers
2005Co-Authors: Daan L. Ooms, Alastair R. HallAbstract:This research focuses on the estimation of labour Supply Equations for Dutch dairy farmers. Off-farm labour Supply is characterised by the fact that only half of the farm households Supply off-farm labour. This results in a sample selection estimation problem that has to be taken into account in estimation. In this research we use the panel data sample selection estimation method of Wooldridge (1995) to estimate the off-farm labour Supply Equation. Simulation results suggest that the decoupledness assumption of direct income paymenst in CAP reform might hold. At least there is a negligible effect through labour Supply.
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EU policy reform simulation based on panel data estimation of on- and off-farm labour Supply Equations for Dutch dairy farmers
2005Co-Authors: Daan L. Ooms, Alastair R. HallAbstract:This research focuses on the estimation of labour Supply Equations for Dutch dairy farmers that are suitable for policy simulations. Data availability leads to the fact that we can not estimate structural labour Supply Equations. We show how to derive reduced form Equations suitable for policy simulations. In this research we use the panel data sample selection estimation approach of Kyriazidou (1997) and Wooldridge (1995) to estimate the off-farm labour Supply Equation. The two lead to different estimation results and different simulation results based on these.
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On- and Off-Farm Labour Supply of Dutch Dairy Farmers: Estimation and Policy Simulations
2005Co-Authors: Daan L. Ooms, Alastair R. HallAbstract:This research focuses on the effect of decoupled payments on labour Supply of Dutch dairy farmers. Data availability leads to the fact that we can not estimate structural labour Supply Equations. We show how to derive reduced form Equations suitable for policy simulations. We use the panel data sample selection estimation approach Wooldridge (1995) to estimate the off-farm labour Supply Equation. This method is based on Mundlak's (1978) linear panel data estimation approach, which we use to estimate the on-farm labour Supply Equations. Even though, simulations show a significant negative effect of decoupled payments on labour Supply, the economic significance of this effect is very limited.
Zhipeng Liao - One of the best experts on this subject based on the ideXlab platform.
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Adaptive GMM Shrinkage Estimation with Consistent Moment Selection
Econometric Theory, 2013Co-Authors: Zhipeng LiaoAbstract:This paper proposes a GMM shrinkage method to efficiently estimate the unknown parameters identified by some moment restrictions, when there is another set of possibly misspecified moment conditions. We show that our method enjoys oracle-like properties, i.e. it consistently selects the correct moment conditions in the second set and at the same time, its estimator achieves the semi-parametric efficiency bound implied by all correct moment conditions. For empirical implementation, we provide a simple data-driven procedure for selecting the tuning parameters of the penalty function. We also establish oracle properties of the GMM shrinkage method in the practically important scenario where the moment conditions in the first set fail to strongly identify the structural parameters. The simulation results show that the method works well in terms of correct moment selection and the finite sample properties of its estimators. As an empirical illustration, we apply our method to estimate the life-cycle labor Supply Equation studied in MaCurdy (1981) and Altonji (1986). Our empirical findings support the validity of the IVs used in both papers and confirm that wage is an endogenous variable in the labor Supply Equation.
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ADAPTIVE GMM SHRINKAGE ESTIMATION WITH CONSISTENT MOMENT SELECTION
Econometric Theory, 2013Co-Authors: Zhipeng LiaoAbstract:This paper proposes a generalized method of moments (GMM) shrinkage method to efficiently estimate the unknown parameters θo identified by some moment restrictions, when there is another set of possibly misspecified moment conditions. We show that our method enjoys oracle-like properties; i.e., it consistently selects the correct moment conditions in the second set and at the same time, its estimator is as efficient as the GMM estimator based on all correct moment conditions. For empirical implementation, we provide a simple data-driven procedure for selecting the tuning parameters of the penalty function. We also establish oracle properties of the GMM shrinkage method in the practically important scenario where the moment conditions in the first set fail to strongly identify θo. The simulation results show that the method works well in terms of correct moment selection and the finite sample properties of its estimators. As an empirical illustration, we apply our method to estimate the life-cycle labor Supply Equation studied in MaCurdy (1981, Journal of Political Economy 89(6), 1059–1085) and Altonji (1986, Journal of Political Economy 94(3), 176–215). Our empirical findings support the validity of the instrumental variables used in both papers and confirm that wage is an endogenous variable in the labor Supply Equation.
