搜索结果: 1-4 共查到“birth control”相关记录4条 . 查询时间(0.046 秒)
The Supply of Birth Control Methods, Education, and Fertility: Evidence from Romania
Birth Control Methods Education Fertility Evidence Romania
2016/3/8
This paper investigates the effect of the supply of birth control methods on fertility behavior by examining Romania’s 23-year period of pronatalist policies. Following the lifting of the restrictions...
APPROXIMATE OPTIMAL BIRTH CONTROL OF POTULATION SYSTEMS
Optimal birth control McKendrick equati
2007/12/10
摘要 We consider optimal birth control for the McKendrick equation of population dynamics. It consists of optimizing a system described by a first order partial differential equationwith nonlocal biline...
food and drug administration Statement on Effectiveness of Newer Birth Control Pills
Birth Control contraceptives
2007/1/26
January 23, 2007，Recent wire service stories about today's meeting of the FDA Reproductive Health Drugs Advisory Committee have created misperceptions about the effectiveness of newer generation hormo...
ONE IN THREE TEENS GET NO FORMAL EDUCATION ABOUT BIRTH CONTROL
teens birth control Formal Sex Education
2006/11/29
November 28, 2006，The proportion of U.S. teens who had received any formal instruction about birth control methods declined sharply between 1995 and 2002, while the proportion who had received only in...