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排序方式: 共有2045条查询结果,搜索用时 203 毫秒
31.
Christopher L. Gilbert 《Journal of econometrics》1977,5(2):221-239
By consideration of either Generalised Least-Squares of Theil-Goldberger estimates of equations for which data on the dependent variable is available for a subset of the sample period on only an annual basis, it is shown that best estimates of the equation coefficients may be obtained by Ordinary Least-Squares estimation over the complete set of quarterly observations with quarterly averages substituted for the missing quarterly data, and symmetrically for the corresponding observations on the regressor variables. The approach is extended to the Two-Stage Least-Squares case, and to the (structurally or stochastically) autoregressive case. 相似文献
32.
This paper uses a model of optimal household residential decisions to construct a comprehensive “true” spatial cost of living index with readily available Brazilian census data. We find evidence of a decreasing or U-shaped relationship (differing with education level and region) between the cost of living and urbanization, suggesting that both market disintegration and congestion play roles in raising costs. Controlling for spatial differences in the cost of living is shown to have important consequences for the determinants of poverty and (contrary to many previous results) to increase income inequality. 相似文献
33.
Christopher Otrok 《International Economic Review》2001,42(2):345-367
If preferences are not time-separable, economic agents care not only about the magnitude of fluctuations in consumption but also about the persistence and other temporal characteristics of those fluctuations. This paper extends and develops the theory of spectral utility functions, which measure utility frequency by frequency, to illustrate the interaction between consumption volatility and time-non-separable preferences. To highlight the economic implications of the interaction, spectral welfare cost functions are developed to provide a quantitative measure of the importance to economic agents of the temporal delivery of consumption volatility. 相似文献
34.
Christopher J. Flinn 《The Review of economic studies》2002,69(3):611-645
Markets with rigid labour regulations and centralized wage setting are often thought to be inefficient but egalitarian. Using a model of off-and on-the-job search and event-history, individual-level data for Italy and the U.S., we show that while the cross-sectional wage distributions of young Italian males are much more compressed than are the comparable distributions for young white U.S. males, the estimated search model implies that the distribution of lifetime welfare is no more disperse in the U.S. than it is in Italy. Our model implies that the high frequency of movements between labour market states leads to both a relatively equitable distribution of "long run" welfare in the U.S. and a high level of cross-sectional inequality. 相似文献
35.
36.
Christopher J. Nicol 《The Canadian journal of economics》2001,34(1):259-289
A rank-three demand system is estimated with United States Consumer Expenditure Survey microdata. A unique price data set is also used, which permits the analysis of effects of systematic errors in price variables. It is found that errors in price variables bias test results for the rank-three hypothesis, in particular towards rejection. Other test results are affected to a lesser extent. Estimating smaller systems of demand equations, even when conditioning on excluded goods, yields significantly different results. Another important conclusion is that model specification is statistically significantly different for households of varying family sizes and housing tenure statuses. JEL Classifications: C31, D12.
Le rang et la spécification du modèle des systèmes de demande: une analyse empirique utilisant des microdonnées américaines. On calibre un système de demande de rang trois à l'aide de microdonnées américaines tirées de la United States Consumer Expenditures Survey. Un ensemble unique de prix est utilisé afin de permettre l'analyse des effets d'erreurs systématiques dans les variables de prix. Il appert que les erreurs dans les variables de prix distorsionnent les résultats du test de l'hypothèse de rang trois en faveur d'un rejet. D'autres résultats de tests sont affectés à un moindre degré. Si l'on calibre de plus petits systèmes d'équations de demande, même en posant des conditions sur des biens exclus, des résultats qui diffèrent de manière significative s'ensuivent. Une autre conclusion importante est que la spécification du modèle est différente de manière statistiquement significative pour les ménages selon la taille de la famille et le statut domiciliaire. 相似文献
Le rang et la spécification du modèle des systèmes de demande: une analyse empirique utilisant des microdonnées américaines. On calibre un système de demande de rang trois à l'aide de microdonnées américaines tirées de la United States Consumer Expenditures Survey. Un ensemble unique de prix est utilisé afin de permettre l'analyse des effets d'erreurs systématiques dans les variables de prix. Il appert que les erreurs dans les variables de prix distorsionnent les résultats du test de l'hypothèse de rang trois en faveur d'un rejet. D'autres résultats de tests sont affectés à un moindre degré. Si l'on calibre de plus petits systèmes d'équations de demande, même en posant des conditions sur des biens exclus, des résultats qui diffèrent de manière significative s'ensuivent. Une autre conclusion importante est que la spécification du modèle est différente de manière statistiquement significative pour les ménages selon la taille de la famille et le statut domiciliaire. 相似文献
37.
The potential capabilities of artificial-intelligence-based educational devices are briefly described, and a technical forecast of an advanced instructional work station's attributes is presented. Forces driving implementation are delineated, and likely long-term consequences of adoption are assessed. The barriers that impede this evolution are discussed, and policy options are analyzed. 相似文献
38.
Christopher Kobrak 《Accounting, Business & Financial History》2002,12(1):25-42
While historians have for a long time recognized the importance of the First World War to the general flow of history, business economists do not fully appreciate the impact of the war on commercial relationships. The First World War transformed the political, economic, and social context, in which business was done, forcing companies to develop new strategies and activities, some of which were almost unimaginable before August 1914. This article focuses on one aspect of doing business: foreign exchange management. It argues that Schering AG and its parent, like many German companies after the First World War, were obliged to refocus their activities around their foreign exchange exposures and that the management of foreign exchange issues contributed to a much tighter relationship between businesses, government, and business associations than had existed before the war and for which some aspects of Germany's system of corporate control were not well adapted to handle. 相似文献
39.
40.
Christopher D. Ittner William N. Lanen & David F. Larcker 《Journal of Accounting Research》2002,40(3):711-726
This study examines the association between activity-based costing and manufacturing performance. Results using a cross-sectional sample of manufacturing plants indicates that extensive ABC use is associated with higher quality levels and greater improvements in cycle time and quality, and is indirectly associated with manufacturing cost reductions through quality and cycle time improvements. However, on average, extensive ABC use has no significant association with return on assets. Instead, we find weak evidence that the association between ABC and accounting profitability is contingent on the plant's operational characteristics. 相似文献