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91.
On FDH efficiency analysis: Some methodological issues and applications to retail banking,courts, and urban transit 总被引:14,自引:9,他引:5
Henry Tulkens 《Journal of Productivity Analysis》1993,4(1-2):183-210
The methodology of free disposal hull (FDH) measure of productive efficiency is defined and put in perspectivevis-à-vis other nonparametric techniques, in terms of the postulates on which they respectively rest. Computational issues are also considered, in relation to the linear programming techniques used in DEA. The first application bears on a comparison between a private and a public bank, in terms of the relative efficiency of their branches. Important characteristics of the data are revealed by FDH that are not by DEA, due to a better data fit. Next, efficiency estimates of judicial activities are used to evaluate what part of the existing backlog could be reduced by efficiency increases. Finally, with monthly data of an urban transit firm over 12 years, the FDH methodology is extended to a sequential treatment of time series, that supplements efficiency estimation with a measure of technical progress. 相似文献
92.
The link between output changes and factor-mix adjustments in general equilibrium is examined for each of nine industries using pooled data from 12 developed countries over the years 1970–85. Specifications of the Stolper-Samuelson theorem and the specific-factors model of production are built on the assumptions and structure of theory with each industry isolated in turn. In their simplest version with only capital and labor input, these competitive general-equilibrium models explain a good deal of the observed variations in industrial factor mixes. The specific-factors model performs better. 相似文献
93.
We analyze the effects of differences of opinion on the dynamicsof trading volume in stocks and options. We find that disagreementsabout the mean of the current- and next-period public informationlead to trading in stocks in the current period but have noeffect on options trading. Without options, we find that disagreementsabout the precision of all past and current public informationaffect trading in stocks in the current period. With options,only disagreements about the precisions of the next- and current-periodinformation affect stocks and options trading in the currentperiod. Our results suggest that options trading is concentratedaround information events that are likely to cause disagreementsamong investors, whereas trading in stocks may be diffusiveover many periods. 相似文献
94.
This article shows how to evaluate the performance of managedportfolios using stochastic discount factors (SDFs) from continuous-timeterm structure models. These models imply empirical factorsthat include time averages of the underlying state variables.The approach addresses a performance measurement bias, describedby Goetzmann, Ingersoll, and Ivkovic (2000) and Ferson and Khang(2002), arising because fund managers may trade within the returnmeasurement interval or hold positions in replicable options.The empirical factors contribute explanatory power in factormodel regressions and reduce model pricing errors. We illustratethe approach on US government bond funds during 19862000. 相似文献
95.
Using ideas from the endogenous growth literature, we present a model of the endogenous determination of productivity growth based on individual worker decisions about human capital investment. We calibrate a version of the model to match long run growth facts from the US and study the business cycle properties of this model. This approach offers improvements along several dimensions over standard exogenous growth methodologies. Most importantly, our stochastic endogenous growth model generates much greater serial correlation in output growth and labor supply volatility relative to its real business cycle counterpart. We conclude that using the extra discipline of reproducing the trend productivity growth features of the data endogenously constitutes an important missing component from the real business cycle approach. 相似文献
96.
THE ORGANIZATION AS POLITICAL ARENA 总被引:3,自引:0,他引:3
Politics and conflict sometimes capture an organization in whole or significant part, giving rise to a form we call the Political Arena. After discussing briefly the system of politics in organizations, particularly as a set of ‘political games’, we derive through a series of propositions four basic types of Political Arenas: the complete Political Arena (characterized by conflict that is intensive and pervasive), the confrontation (conflict that is intensive but contained), the shaky alliance (conflict that is moderate and contained), and the politicized organization (conflict that is moderate but pervasive). the interrelationships among these four, as well as the context of each, are then described in terms of a process model of life cycles of Political Arenas. A final section of the paper considers the functional roles of politics in organizations. 相似文献
97.
98.
This paper presents a new method to examine the performance evaluation of mutual funds in incomplete markets. Based on the no arbitrage condition, we develop bounds on admissible performance measures. We suggest new ways of ranking mutual funds and provide a diagnostic instrument for evaluating the admissibility of candidate performance measures. Using a monthly sample of 320 equity funds, we show that admissible performance values can vary widely, supporting the casual observation that investors disagree on the evaluation of mutual funds. In particular, we cannot rule out that more than 80% of the mutual funds are given positive values by some investors. Moreover, we empirically demonstrate that potential inference errors embedded in existing parametric performance measures can be of important magnitude. 相似文献
99.
The standard urban model supports the concept of a constant land price gradient throughout the urban area. It is a reasonable
conjecture that the land price gradient would vary with direction from the CBD. The variation in the gradient could be caused
by a number of factors, but the idea that the land price gradient is flatter along radial transportation routes than in other
directions is widely recognized even though there is little rigorous empirical work supporting this belief. This paper will
examine the structure of urban land prices with a focus on the land price gradient as a function of the direction around the
center of the city using a piecewise linear function. The added flexibility in the gradient estimate gained by this approach
reveals a dramatically varying directional land price gradient.
相似文献
Henry J. MunnekeEmail: |
100.
The effects of Mongolia's booming mining industry on its agricultural sector: A test for Dutch disease 下载免费PDF全文
Dutch disease occurs when currency strengthening associated with a booming sector of an economy crowds out a lagging trade‐dependent sector. In this study, a Keynesian‐style model is specified to deduce hypotheses about how increased foreign direct investment (FDI) aimed at Mongolia's mining sector affects its agricultural sector. A key finding is that while econometric results suggest the increased FDI strengthened Mongolia's currency, its adverse effect on Mongolia's trade‐sensitive agricultural sector is not sufficiently strong to cause the sector to decline. Although Dutch disease was not detected, the posited mechanism clearly is important. Specifically, when currency strengthening is ignored the reduced‐form elasticity of agricultural value‐added with respect to FDI is 2.7 times larger than when currency strengthening is taken into account (0.103 vs. 0.038). Also, FDI‐induced currency strengthening causes the Keynesian multiplier to drop from 2.40 to 2.00 and the FDI multiplier to drop from 3.05 to 1.89. 相似文献