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91.
92.
The interaction of geography and world-systems theory has created two groups of work. The first body of work uses world-systems theory as its theoretical framework with minor levels of critique or change. The second body of work attempts to inform world- systems theory by explicitly including a geographical perspective. Human geographers attracted to world-systems theory provide a perspective that highlights the role of agency in what is widely perceived to be a rigid structuralist approach. Key geographical concepts of region and place are viewed as social constructs created within an overarching context of structural imperatives. By conceptualizing places, states, and the macroregions of core, semiperiphery, and periphery as geographical scales, the role of agency in creating and maintaining the important structures and institutions of the capitalist world-economy, such as hegemony, is illustrated. The geographer's interest in the creation of geographical scales results in analysis of the dynamism of the contemporary world-system. 相似文献
93.
The American Sociologist - Columbia sociologists from the 1940s to 1970s probed core elements of post-industrial society. Lazarsfeld, Merton, and their colleagues conducted many detailed studies... 相似文献
94.
This paper describes a representative, sectionalized, computer assisted strategic planning system, as developed and used by the authors. It suggests that the future direction of such programmes—with several already in use—is toward the development of approaches which combine simulation and linear programming to simultaneously address long and short-term objectives. 相似文献
95.
Population projection techniques are used to project the size and age structure of the academic labor force. Age specific coverage data from Teachers Insurance and Annuity Association are used to proxy academic employment. Hiring, quit, retirement and death rates are calculated for 1981 and 1982. Projections of the future academic labor force are made holding these rates constant. The results show the importance of these entry and exit rates and also indicate how these rates can fluctuate from year to year.Estimates of the future demand for teachers are used to determine a target rate of growth of the academic labor force. Alternative personnel policies are incorporated into the projections. This analysis indicates that the personnel policies chosen to meet the desired labor force size have substantially different effects on the age structure of the labor force.The authors wish to acknowledge the cooperation of the Teachers Insurance and Annuity Association in providing the data used in this study and specifically Francis King for his assistance and encouragement. Helpful comments on this paper were provided by John Dutton, Ronald Schrimper, Jack Wilson, and Bryan Boulier. 相似文献
96.
We show that sup, completely as, where f is a uniformly continuous density on are independent random vectors with common density f, and fn is the variable kernel estimate Here Hni is the distance between Xi and its kth nearest neighbour, K is a given density satisfying some regularity conditions, and k is a sequence of integers with the property that log asn 相似文献
97.
This paper compares a model of labor supply for female heads of household, male heads, and wives. Not only have female-headed households increased significantly as a proportion of all households in recent years, but these households are also more likely to be in poverty than are other households. Yet, the determinants of labor supply for this increasingly important demographic group still are largely unknown. Analyses are performed on a sample of employed female and male heads and wives from the 1976 Survey of Income and Education. We examine the effects of wages, unearned income, number of children, and several other variables on hours worked per year, allowing for race interactions. We find that female heads and wives are similar in the effects of wages on their labor supply, while female and male heads are similar in the positive effect of children. We conclude that although financial need, as evidenced by low wages and children, increases female heads’labor supply, employment in more advantaged, non-female dominated jobs and core industries is needed to promote their full participation in the labor force. 相似文献
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This article explores the theoretical and empirical issues in unit root nonstationarity for multiproduct acreage response systems. A wheat/barley acreage response system for the praire provinces region of Canada is estimated and the existence of a unit root cannot be rejected empirically. It is shown that while the estimates of this system are very similar whether or not a unit root is assumed, the effects of a one-shot policy shock in the two alternative models are very different. 相似文献