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罗斯福时代的美国欧洲犹太知识移民政策：1933-1945
罗斯福时代 犹太知识移民
2008/12/22
1933- 1945 年, 面对欧洲犹太知识难民潮, 美国政府采取了许多宽松的政策和措施, 接纳了为数众多
的知识难民, 这种极富有远见、富有人道主义的做法, 在为美国赢得了国际社会的尊重的同时, 也为美国赢得了它国所不可能掌握的精神宝库, 对美国科学中心地位的建立有着直接的意义。
The Fertility Pattern of Twins and the General Population Compared：Evidence from Danish Cohorts 1945-64
cohort fertility Denmark fertility twin studies
2008/12/1
Twin studies provide an important possibility for demographers to analyze patterns of heritability and to estimate structural models with controls for endowments. These possibilities are increasingly ...
Over the last three decades fertility in Scotland, as measured by the total fertility rate, has moved from being higher than in England and Wales, to being lower. This article presents the first offic...