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971.
The major question addressed is the treatment of capital embodied technical progress. Should Obsolescence be deducted to calculate a net stock, or should quality adjustments be made in each vintage of new capital, or both, or neither? In order to estimate the contribution of new investment to growth it is necessary to use a capital stock where different vintages are weighted in proportion to their marginal products. The commonly used gross capital measures do not do this, because they do not allow for the higher marginal product of more modern capital. Such an allowance for capital embodied technical progress can be made either by quality adjusting new capital or by incorporating obsolescence into the valuation of the old capital (but not both). However, even if new capital incorporates an allowance for improved quality, it will still be necessary to revalue the old capital. Frequently, a reasonable approximation to the net capital stock results from a linear decline in quasi-rents and can be approximated by published estimates of the stock of capital net of straight line depreciation. Steady technical progress will not lead to the commonly used exponential service decline functions. To avoid overestimating the return to investment when technology changes it will be necessary to use information on capital embodied technical change to revalue old capital, rather than to change the price indices for new capital.  相似文献   
972.
973.
974.
How have government transfers altered the distribution of income, the level of work effort, and the rate of personal saving? Most scholars approach this question by comparing the current level of government transfers with the unrealistic counterfactual of a zero-transfer situation. This method overlooks the fact that nongovernment transfers existed before government transfers and the possibility that private transfers might have grown more if government transfers had grown less. This paper explores the significance of one private alternative to government transfers-namely, direct interfamily giving of cash, food, and housing. Fragmentary evidence suggests that such interfamily transfer was quantitatively more important than governmental transfer for these purposes thirty years ago, but is now only half as great. If current government transfers are conversions of, or substitutes for, interfamily transfers, then it follows that some of the benefits of government transfer “slide” over to “secondary beneficiaries,” i.e. those who would have made the private transfers. Further, it follows that the effects of government transfers are not much different from those of the private transfers which they replace.  相似文献   
975.
Recent work in macro theory suggests that aggregate 'demand' policies have direct supply-side effects in the short run, if Lucas's standard specification of the nonlinear adjustment costs for capital is generalized In this paper, we estimate an investment equation (involving Tobin's valuation ratio and Australian data) which nests three hypotheses: Lucas's standard specification of adjustment costs, a simple generalization which permits labour to be involved in the installation of capital and a model which allows for liquidity constraints. The results support the suggested alternative formulation of the q-theory  相似文献   
976.
This paper summarizes estimates of the monetary value of the physical damages that acid deposition causes in the United States. These estimates were developed for the Interim Assessment of the National Acid Precipitation Assessment Program (NAPAP) but were not included in the final version of the assessment report. This paper describes this research and discusses why these estimates received so little support within the NAPAP. It outlines the role of economics in the current Integrated Assessment and discusses the extent to which lessons learned earlier have been integrated into the current assessment.  相似文献   
977.
Journal of the Academy of Marketing Science - The experience of romantic love is closely interlocked with consumption journeys—yet how and why consumers engage in romantic consumption is not...  相似文献   
978.
Central limit theorems are developed for instrumental variables estimates of linear and semiparametric partly linear regression models for spatial data. General forms of spatial dependence and heterogeneity in explanatory variables and unobservable disturbances are permitted. We discuss estimation of the variance matrix, including estimates that are robust to disturbance heteroscedasticity and/or dependence. A Monte Carlo study of finite-sample performance is included. In an empirical example, the estimates and robust and non-robust standard errors are computed from Indian regional data, following tests for spatial correlation in disturbances, and nonparametric regression fitting. Some final comments discuss modifications and extensions.  相似文献   
979.
980.
This paper assesses the real-time performance of the Commerce Department's composite index of leading indicators. The authors find that the composite leading index has failed to provide reliable advance warning of cyclical turning points. One reason for this failure is that the leading index's transition from expansion to contraction generally is not very sharp. Consequently, discerning real-time cyclical peaks in the index is difficult. Transitions from contraction to expansion on average are sharp. However, cyclical troughs in the leading index often precede cyclical troughs in the economy by only a few months. Thus, even timely recognition of troughs in the leading index fails to provide advance warning of turnarounds in the general level of economic activity .  相似文献   
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