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: 1-7 共查到人口学 intercourse相关记录7条 . 查询时间(0.046 秒)
CONTEXT: The age difference between a female and her partner may influence relationship dynamics in ways that put the female at increased risk of unintended pregnancies and sexually transmitted diseas...
Context: Despite widespread efforts to increase contraceptive use to prevent both pregnancy and sexually transmitted diseases among sexually active adolescents, most prior work examining adolescent co...
Context: Although a limited amount of research has retrospectively explored the childhood and adolescent heterosexual experiences of lesbians, little is known about the prevalence of heterosexual beha...
Context: Whether the effect of gender on the risk of first intercourse is influenced by adolescents' ethnicity has received limited attention in research on age at first sex. Such information could pr...
Context: While policymakers and researchers alike often seem to believe that young women's decision to initiate sexual intercourse is conscious and free of ambiguity, the actual degree of control that...
Despite long-standing public support for sex education in the schools, it has been difficult to show concrete effects of sex education on sexual and contraceptive behavior. Data from the 1988 National...
In this paper we analyze the spatial patterns of the risk of unprotected sexual intercourse for Italian women during their initial experience with sexual intercourse. We rely on geo-referenced survey ...

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...