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Juan José Díaz-Hernández Eduardo Martínez-Budría Sergio Jara-Diaz 《Journal of Productivity Analysis》2008,30(3):223-232
Port workers services have been usually heavily regulated and reserved exclusively for a special kind of workers, dockworkers,
which seems to have been the cause of serious inefficiencies worldwide. During the eighties, law reforms have been introduced
to solve this problem. In this paper we analyze and decompose efficiency in cargo handling operations in 19 Spanish ports
from 1990 to 1998. The method chosen is that of the parametric estimation of both allocative and technical inefficiency using
panel data and a quadratic cost function. Results show that although inefficiency has decreased overall, there has been over
utilization of labor regarding capital, and technical inefficiency. This supports the need of further consideration of other
aspects including competition.
相似文献
Juan José Díaz-HernándezEmail: |
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Previously, in several papers and textbooks, the classical economic order quantity (EOQ) and the economic production quantity (EPQ) formulas for the shortage case, have been derived using differential calculus and solving two simultaneous equations (derived from setting the two first partial derivatives to zero) with the need to prove optimality conditions with second-order derivatives. In a previous original piece of work, a new approach to find the EOQ with backlogging using some slight algebraic developments appeared. This paper extends the mentioned algebraic approach to the EPQ formula taking shortages into consideration within the case of only one backlog cost per unit and time unit. The final expressions provide the same formulas that are available in the classic textbooks on inventory theory. 相似文献
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Juan S. Blyde Christian Daude Eduardo Fernández-Arias 《Review of World Economics》2010,146(2):359-387
In this paper we analyze the long-run relationship between output collapses—defined as GDP falling substantially below trend—and
total factor productivity (TFP). We use a panel of 76 developed and developing countries during the period 1960–2004 to identify
episodes of output collapse and estimate counterfactual post-collapse TFP trends. Collapses are concentrated in developing
countries, especially Africa and Latin America, and were particularly widespread in the 1980s in Latin America. Overall, output
collapses are systematically associated with long-lasting declines in TFP. We explore the conditions under which collapses
are least or most damaging, as well as the type of shocks that make collapses more likely or severe. Furthermore, we provide
a quantification of the associated welfare loss with output collapses. 相似文献
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Eduardo Fernández‐Huerga 《American journal of economics and sociology》2013,72(2):361-385
The neoclassical concept of the market is built on a number of assumptions that lead one to view it as a type of ether, devoid of any institutional content. In opposition to this point of view, this article proposes an alternative characterization of markets based on the fundamental principles of institutional and post‐Keynesian economics. After reviewing the main features that characterize the behavior of economic agents, we analyze the set of interrelations between these agents within markets and the role of institutions in the regulation of these interrelations. Finally, we discuss some of the consequences generated by the institutional dimensions of markets with regard to their origins and evolution, the justification for their existence, or the evaluation of their results. 相似文献
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This article introduces a new count data stochastic frontier model that researchers can use in order to study efficiency in production when the output variable is a count (so that its conditional distribution is discrete). We discuss parametric and nonparametric estimation of the model, and a Monte Carlo study is presented in order to evaluate the merits and applicability of the new model in small samples. Finally, we use the methods discussed in this article to estimate a production function for the number of patents awarded to a firm given expenditure on R&D. 相似文献
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