21世纪我国老年人口规模与老年人力资源开发

21世纪上半叶将是老年人口数量及老龄化突进的时期。老年人力资源是人力资源构成的重要组成部分 ,建立市场机制 ,把老年人愿为现代化建设作贡献的主观愿望和能力 ,与社会发展对老年人力资源的客观需要 ,合理、有效地结合 ,促进人口经济协调发展     

试论明朝在越南的统治

明朝在 140 6年 (永乐四年 )派兵占领越南 (安南 ) ,设置郡县 ,宣德二年 (142 7年 )撤出。在 2 0多年的统治中 ,明政府通过在政治、经济、军事、文化等各方面采取一系列措施来巩固在越南的统治。尽管这些措施曾经给越南人民带来了很大损失 ,但对稳定当时安南的社会秩序和发展生产 ,缓和阶级矛盾起到了重要作用。两国经贸往来和文化交流得到加强 ,也更加有助于两国人民之间的相互了解和增进双方的友谊。     

Theory Trimming

This paper attempts to show that the “Theory Trimming” technique makes little contribution to theory in sociology. A brief history of the technique is given, and several key assertions of its proponents are abstracted. These assertions are shown to be highly questionable. The general alternative to Theory Trimming is shown, and the relationship between Theory Trimming and more general orientations to research is discussed.     

Sex similarities in occupational status attainment: Are the results due to the restriction of the sample to employed women?

Research on sex differences in occupational attainment suggests that working men and working women attain essentially the same mean level of occupational attainment and do so through quite similar processes. A possible explanation for these similarities is that the sample of working women contains an overrepresentation of successful women, since women who can afford not to work will stay out of the labor force unless they find a job commensurate with their education. This we define as a censoring problem. By extending a technique developed by Heckman, we can estimate the structural parameters for all women, regardless of current employment status. This procedure allows us to assess the impact of the censoring problem on women's occupational attainment equations.     

Size and duration of empires growth-decline curves, 3000 to 600 b.c.

Area changes of about 30 best known empires and states are compiled and tabulated. Superimposed and juxtaposed graphs (size versus time) help to visualize the relative size and location in time of these empires. Size-time integral, maximum stable size, adulthood date, and duration are defined operationally and are listed for 20 empires. A criterion is given for distinctness of successive empires. The size-time integral is a direct measure of an empire's impact on history insofar as that impact depends on sheer size and duration. The integral is largest for the Chinese Hsia-Shang, Egyptian New, Old, and Middle, Assyrian New, and Hittite empires. A world-wide territorial concentration index is tabulated. It increases during the period considered from 0.08 to 1.4% of the world dry land area.     

Estimating chance reproducibility in Guttman Scaling

A definition of reproducibility in Guttman Scaling and two chance measures of reproducibility are suggested. The first measure assumes that the items are independent. The second method assumes nonindependent items and fits respondent and item margins by an iterative method used in fitting log-linear models. Chance reproducibility is conceptualized in terms of assumptions about respondent variability.     

Seasonal forcing on the dynamics ofClethrionomys rufocanus: Modeling geographic gradients in population dynamics

We interpret gradients in population dynamics of the gray-sided vole from the southwestern part of the island of Hokkaido to its northeastern part within the framework of a phenomenological model involving the relative length of summer and winter. In Hokkaido, as in other northern regions, both spring and fall is considered as short transition periods between the two main seasons — summer (the primary breeding season) and winter (the non-reproductive or secondary breeding season). We show that the geographic transition in dynamics may be understood as the combined consequence of different patterns of density-dependence during summer and winter, and geographically varying season lengths. Differences are shown to exist between summer and winter with respect to strength of density-dependence. Direct density-dependence, in particular, is stronger during winter than during summer. A model is presented to show how relative lengths of seasons can induce both stable and periodically fluctuating population dynamics. The results are compared and contrasted with what is otherwise known about the gradient in rodent dynamics in Fennoscandia.     

我国文化产业的梯级开发和利用初探

随着全球化的进一步扩张,一种全球文化消费的观念逐渐成形。世界各国相应加大对文化的保护和开发,物质文化与非物质文化遗产的保护和开发也提上政府的议事日程。适时将文化作为一种产业进行规范的开发和可持续利用,也是今后各级政府工作的重中之重。