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81.
Farm size,land yields and the agricultural production function: An analysis for fifteen developing countries 总被引:4,自引:0,他引:4
Giovanni Andrea Cornia 《World development》1985,13(4):513-534
The paper analyzes the relationship between factor inputs, land yields and labor productivity for farms of different size on the basis of FAO farm management data for 15 developing countries. For all but three countries a strong negative correlation is found between farm size on the one side, and factor inputs and yields per hectare on the other. The fitting of unconstrained production functions to the above data suggests that in only few cases the decline in yields for increasing farm size can be attributed to decreasing returns to scale. The higher yields observed in small farms are mainly to be ascribed to higher factor inputs and to a more intensive use of land. Therefore, where conspicuous labor surpluses exist, the superiority of small farming provides solid arguments in favor of land redistribution. Such an agrarian reform would determine higher output, higher labor absorption and a more equitable income distribution, thus contributing in a decisive manner to the alleviation of rural poverty. The paper also provides estimates of cross-sectional production functions for the 15 countries analyzed. Empirical relations are found between the output elasticities of land, labor and intermediate inputs and physical indicators of their scarcity. The paper concludes by proposing a simple method for deriving a long-term production function for agriculture. 相似文献
82.
This paper analyzes the effects of trade and outsourcing on the transition probabilities of employment between sectors, using a dynamic multinomial logit framework with fixed effects. The data cover a sample of individual Austrian male workers over the period 1988–2001. Our results strongly support the view that international economic forces are important determinants of labor market turnover. In particular, an increase in the outsourcing intensity negatively affects the probability of staying in or changing into the manufacturing sector, even more so for industries with a comparative disadvantage. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
83.
Alexander E. Ellinger Andrea D. Ellinger Scott B. Keller 《Journal of Business Logistics》2002,23(1):19-37
Dynamic changes in the business environment are significantly impacting supply chain logistics, resulting in unprecedented personnel demands. Organizational theorists suggest that personnel management is associated with better performance. However, relatively little is known about effective human resource practices within the logistics industry. The learning organization concept offers logistics organizations a theoretical rationale for promoting learning environments to better leverage employees' knowledge, skills, and abilities and improve performance. This research examines logistics managers' perceptions of individual level learning behavior within their organizations and its relationship to firm performance. 相似文献
84.
This article presents a measure of ‘them and us' as a basis for evaluating an employee involvement programme in British Rail. The results of a longitudinal study with control groups and various forms of post-training intervention show no change in organisational commitment but some evidence of a shift towards a more local pattern of identity which excludes union representatives from ‘us'. 相似文献
85.
In this paper we present an overview of GDP and productivitygrowth patterns in OECD countries over the past decade, on thebasis of harmonized data. Our evidence suggests that fast-growingcountries generally shared three characteristics: improvementsin labour utilization; a generalized enhancement in human capital;and rapid shifts in the composition of physical capital towardsinformation and communication technology (ICT) equipment. Particularly,we show that technological change embodied in new ICT capitalgoods has been a primary source of output and productivity growthin ICT-using sectors. The international comparison allows relatinggrowth patterns to institutional and policy indicators, therebyoffering some preliminary insights into the potential sourcesof growth disparities. Cross-country evidence yields some tentativesupport to the idea that institutional factors affecting competitionin the product market are likely to affect productivity patterns,especially in a period of rapid diffusion of a general-purposetechnology (such as ICT). 相似文献
86.
This paper examines the relation between short selling and returns and the impact of arbitrage costs on short sellers’ behavior. Using daily UK short selling data, we find that stocks with low short interest levels experience significant positive returns on both an equal- and value-weighted basis. Economic theory predicts that short sellers avoid establishing positions in stocks with high idiosyncratic risk. Our results indicate a negative relation between short interest and returns among high idiosyncratic risk stocks and that short selling activity is mostly concentrated in low idiosyncratic risk stocks where it is less costly to arbitrage fundamental risk. 相似文献
87.
Andrea CarrieroRaffaella Giacomini 《Journal of econometrics》2011,164(1):21-34
We develop a general framework for analyzing the usefulness of imposing parameter restrictions on a forecasting model. We propose a measure of the usefulness of the restrictions that depends on the forecaster’s loss function and that could be time varying. We show how to conduct inference about this measure. The application of our methodology to analyzing the usefulness of no-arbitrage restrictions for forecasting the term structure of interest rates reveals that: (1) the restrictions have become less useful over time; (2) when using a statistical measure of accuracy, the restrictions are a useful way to reduce parameter estimation uncertainty, but are dominated by restrictions that do the same without using any theory; (3) when using an economic measure of accuracy, the no-arbitrage restrictions are no longer dominated by atheoretical restrictions, but for this to be true it is important that the restrictions incorporate a time-varying risk premium. 相似文献
88.
Goudenège Ludovic Molent Andrea Zanette Antonino 《Decisions in Economics and Finance》2021,44(1):57-72
Decisions in Economics and Finance - In this paper, we investigate value and Greeks computation of a guaranteed minimum withdrawal benefit (GMWB) variable annuity, when both stochastic volatility... 相似文献
89.
90.
Andrea Moro 《International Economic Review》2003,44(2):467-500
This article presents the structural estimation of the parameters of a statistical discrimination model. Although the model is capable of displaying multiple equilibria, an estimation strategy that identifies both the model parameters and the equilibrium selected by the economic agents is developed and empirically implemented. A comparison between the selected equilibria and the other potential equilibria reveals that the decline in wage inequality experienced in the U.S. economy cannot be attributed to changes in the equilibrium selection. Nonetheless, a counterfactual experiment shows that in a color‐blind society blacks' wage would have been on average more than 20% higher. 相似文献