法学 >>> 人口学 >>> 人口学原理 人口经济学 人口社会学 人口学说史 人口史 人口地理学 人口生态学 区域人口学 人口系统工程 人口预测学 人口规划学 人口政策学 计划生育学 人口统计学 人口学其他学科
搜索结果: 1-5 共查到人口学 sex ratios相关记录5条 . 查询时间(0.093 秒)
Background: This study tests the recently proposed hypothesis that the contextual sex ratio at sexual maturity is related to longevity. Previous empirical research in the United States has shown that ...
Background: This study tests the recently proposed hypothesis that the contextual sex ratio at sexual maturity is related to longevity. Previous empirical research in the United States has shown that ...
Background: The adaptive sex ratio adjustment hypothesis suggests that when mothers are in poor conditions the sex ratio of their offspring will be biased towards females. Major famines provide opport...
There is much speculation regarding the contribution of China’s changing demography to the spread of HIV/AIDS. We employ a bio-behavioral macrosimulation model of the heterosexual spread of HIV/AIDS t...
Sex ratios at birth in populations of Eastern and Southern Africa.

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...