8 research outputs found
Symmetric decompositions of cost variation
In this paper a number of symmetric, empirically implementable decompositions of the cost variation (in difference and ratio form) of a production unit are developed. The components distinguished are price level change, technical efficiency change, allocative efficiency change, technological change, scale of activity change, and price structure change. Given data from a (balanced) panel of production units, all the necessary ingredients for the computation of the various decompositions can be obtained by using linear programming techniques (DEA). An application is provided
Evaluating productive performance: A new approach based on the product-mix problem consistent with Data Envelopment Analysis
We propose a new approach to estimate technical coefficients from a set of Decision Making Units
(DMUs) under the assumption that their production plans are set by process engineers through Linear
Programming (LP) techniques. The idea behind thi
A panel data toolbox for MATLAB
__Panel Data Toolbox__ is a new package for __MATLAB__ that includes functions to estimate
the main econometric methods of balanced and unbalanced panel data analysis. The
package includes code for the standard fixed, between and random effects estimation
methods, as well as for the existing instrumental panels and a wide array of spatial panels.
A full set of relevant tests is also included. This paper describes the methodology and
implementation of the functions and illustrates their use with well-known examples. We
perform numerical checks against other popular commercial and free software to show the
validity of the result
A toolbox for calculating and decomposing Total Factor Productivity indices
Total Factor Productivity Toolbox is a new set of functions to calculate the main Total Factor Productivity (TFP) indices and their decompositions, based on Shephard's distance functions, and using Data Envelopment Analysis (DEA) programming techniques. The package includes code for the standard Malmquist, Moorsteen–Bjurek, price-weighted and share-weighted TFP indices, allowing for the choice of orientation (input or output), reference period (base, comparison, geometric mean), returns to scale (variable or constant), and specific decompositions (aggregate, or identifying scale effects, as well as input and output mix effects). Classic definitions of TFP corresponding to the Laspeyres, Paasche, Fisher, or Törnqvist formulas can also be calculated as particular cases. This paper describes the methodology and implementation of the productivity functions in MATLAB. We compare the results corresponding to the different definitions by studying productivity trends in the US agriculture at the individual state level
A toolbox for calculating and decomposing Total Factor Productivity indices
Total Factor Productivity Toolbox is a new set of functions to calculate the main Total Factor Productivity (TFP) indices and their decompositions, based on Shephard's distance functions, and using Data Envelopment Analysis (DEA) programming techniques. The package includes code for the standard Malmquist, Moorsteen–Bjurek, price-weighted and share-weighted TFP indices, allowing for the choice of orientation (input or output), reference period (base, comparison, geometric mean), returns to scale (variable or constant), and specific decompositions (aggregate, or identifying scale effects, as well as input and output mix effects). Classic definitions of TFP corresponding to the Laspeyres, Paasche, Fisher, or Törnqvist formulas can also be calculated as particular cases. This paper describes the methodology and implementation of the productivity functions in MATLAB. We compare the results corresponding to the different definitions by studying productivity trends in the US agriculture at the individual state level
Industry location and wages: The role of market size and accessibility in trading networks
We analyze the effects of local market size and accessibility on the spatial distribution of economic activity and
wages in general equilibrium trade models with many asymmetric countries and costly trade for all goods. In
models with a homogeneous sector, local market size is generally more strongly correlated with a country's industry share, whereas accessibility better explains a country's wage. We analytically show that result in a
simplified case and then confirm it using simulations with random trading networks. In models with only
differentiated sectors, both local market size and accessibility are highly correlated with wages. The impact of
local market size on industry location is more robust than the impact of local market size on wages in economic
geography models
A Data Envelopment Analysis Toolbox for MATLAB
The Data Envelopment Analysis Toolbox is a new package for MATLAB that includes
functions to calculate the main data envelopment analysis models. The package includes
code for the standard radial input, output and additive measures, allowing for constant
and variable returns to scale, as well as recent developments related to the directional
distance function, and including both desirable and undesirable outputs when measuring
efficiency and productivity; i.e., Malmquist and Malmquist-Luenberger indices. Bootstrapping
to perform statistical analysis is also included. This paper describes the methodology
and implementation of the functions, and reports numerical results using a reliable
productivity database on US agriculture to illustrate their use
Rodinson M., Islam et capitalisme.
Levy C. Rodinson M., Islam et capitalisme.. In: Revue française de sociologie, 1967, 8-3. p. 410