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"The structure of intertemporal patterns of household migration responses is empirically examined. The findings indicate that migration decisions are often related to changes in household conditions in both prior as well as following periods, are dependent on the duration of household status characteristics (e.g., marital status) and not just their presence at any point in time, and finally that migration response in any particular period very often differs among households as a result of differences in the underlying structure of migration frequency behavior. These findings suggest that inferences based on comparisons of household migration responses over only a single period of time are incomplete, possibly to the point of being misleading." The study is based on a calculation of "the distribution of migration patterns between 1976 and 1979 for a sample of 4,739 households in the [U.S.] Michigan Panel Survey on Income Dynamics (PSIC)." 相似文献
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ABSTRACT This paper explores theories of population growth, and implied economic growth, among the major U.S. metro areas and regions. One set of theoretical arguments favor the growth of large cities, while an alternative set of arguments favor the growth of the smaller urban areas. Still another set of arguments combine economic space and urban size in the concept of regional growth centers as the engines of regional growth. Granger causality tests are applied to determine the role of urban size or growth centres as engines of regional growth. The test results indicate no causal relationship exists. 相似文献
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This article reports the results of analysis of samples collected from some Egyptian quartzite artifacts. such as statuary, dating from the New Kingdom. Most of the artifacts are located in Upper Egypt, but the results of analysis suggest that, until the middle of the fourteenth century B.C., the quartzite came from a more distant quarry near Cairo rather than from the quartzite quarries located near Aswan in Upper Egypt. 相似文献