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At local scale, the productivity of the soil units identified during the semi-detailed soil survey is estimated using a three-level hierarchical crop productivity estimator, simulating the potential, water-limited and land production potential.
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Basic pooled OLS estimators of productivity models have been criticized for their potential "heterogeneity bias" (Vandenberghe 2013) due to the fact that firm productivity and mean wages depend to a large extent on firm-specific, time-invariant characteristics that are not measured in micro-level surveys.
Elementary decision theory; loss and risk functions, Bayes estimation; UMVU estimator, minimax estimators, shrinkage estimators.
The coefficient of the terms of trade is positive and statistically significant with the robust version of the estimator; total factor productivity has only a positive and statistically significant in the robust version of the estimator; and the exchange regime variable, while having a positive sign as expected, lacks statistical significance.
The terms of trade have the positive and statistically significant effect expected by the literature in the robust versions of both the CCE and the AMG estimators, and total factor productivity only has a positive effect and statistically significant effect with the non-robust version of the CCE estimator.
And the economy has been growing at a healthy rate with low inflation and strong productivity growth for so long that budget estimators are beginning to incorporate slightly more optimistic economic assumptions into their outlook.
Table 6 in the Appendix presents such productivity equations for OLS, FE and GMM-IV estimators.
Expected biases associated with OLS and the relatively poor performance and shortcomings of the FE estimator in the context of firm-level productivity regressions are reviewed in Van Beveren (2012).
This paper describes the process we formalized to customize a project's activities, resources, and resource productivity rates based on a project-independent representation of estimators' rationale and a project-specific feature-based product model.
Estimators have different preferences for how and when to adjust a project's activities, resources, and resource productivity rates that form the basis of a cost estimate.
Correlations were estimated using a robust bicorrelation mid-weight estimator.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com