全文获取类型
收费全文 | 1016篇 |
免费 | 19篇 |
专业分类
教育 | 798篇 |
科学研究 | 26篇 |
各国文化 | 15篇 |
体育 | 67篇 |
综合类 | 1篇 |
文化理论 | 5篇 |
信息传播 | 123篇 |
出版年
2023年 | 5篇 |
2022年 | 6篇 |
2021年 | 13篇 |
2020年 | 17篇 |
2019年 | 32篇 |
2018年 | 43篇 |
2017年 | 42篇 |
2016年 | 37篇 |
2015年 | 19篇 |
2014年 | 25篇 |
2013年 | 244篇 |
2012年 | 30篇 |
2011年 | 36篇 |
2010年 | 22篇 |
2009年 | 27篇 |
2008年 | 27篇 |
2007年 | 26篇 |
2006年 | 27篇 |
2005年 | 37篇 |
2004年 | 22篇 |
2003年 | 17篇 |
2002年 | 22篇 |
2001年 | 15篇 |
2000年 | 16篇 |
1999年 | 11篇 |
1998年 | 17篇 |
1997年 | 17篇 |
1996年 | 16篇 |
1995年 | 13篇 |
1994年 | 10篇 |
1993年 | 8篇 |
1992年 | 9篇 |
1991年 | 10篇 |
1990年 | 10篇 |
1989年 | 5篇 |
1988年 | 10篇 |
1987年 | 3篇 |
1986年 | 6篇 |
1985年 | 4篇 |
1984年 | 6篇 |
1983年 | 5篇 |
1982年 | 13篇 |
1981年 | 7篇 |
1980年 | 7篇 |
1979年 | 7篇 |
1978年 | 6篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1975年 | 4篇 |
1974年 | 5篇 |
排序方式: 共有1035条查询结果,搜索用时 15 毫秒
101.
102.
Effects of a prenatal care intervention for adolescent mothers on birth weight, repeat pregnancy, and educational outcomes at one year postpartum 下载免费PDF全文
Ford K Weglicki L Kershaw T Schram C Hoyer PJ Jacobson ML 《The Journal of perinatal education》2002,11(1):35-38
About one-third of adolescent mothers receive inadequate prenatal care, and babies born to young mothers are more likely to be of low birth weight. The objective of this study is to evaluate a peer-centered prenatal care program for adolescent mothers. Pregnant adolescents were randomly assigned to an experimental or control group in a mastery modeling peer-support intervention designed to improve long- and short-term perinatal outcomes. A sample of 282 urban pregnant adolescents (94% African American, 4% Caucasian, 2% other) participated in the study. Participants were recruited from five clinics located mainly in Detroit, Michigan. Participants in the experimental group received care in a small group setting and learned to perform critical measurements with a peer partner during prenatal visits. Participants in the control group received individual prenatal care in the same clinics. Outcome measures included birth weight, years of schooling completed at one year postpartum, planned and unplanned pregnancy at one year postpartum, and employment and school attendance at one year postpartum. Mothers in the experimental group had a lower rate of low birth weight (6.6% vs. 12.5%, p=0.08). The rate of unplanned pregnancy was also lower for adolescents in the experimental group (13.4% vs. 15.9%), although this difference was not statistically significant. Adolescents who participated in the intervention were more likely to have continued their education during the pregnancy and the postpartum year. The mastery modeling, peer-centered, prenatal care program produced some positive pregnancy outcomes for adolescent mothers. 相似文献
103.
104.
105.
Evaluating college teaching as leadership 总被引:2,自引:2,他引:2
106.
Effects of prenatal cocaine exposure and parental versus nonparental care on outcome at 2 years of age were examined. The sample included 83 cocaine-exposed and 63 nonexposed children and their caregivers; 49 and 34 of the cocaine-exposed children experienced parental and nonparental care, respectively. Prenatal drug exposure was not related directly to children's outcome at 2 years of age. However, compared with cocaine-exposed children in parental care, those in nonparental care experienced a more optimal environment and performed better in several developmental domains at 2 years of age in spite of being at greater neonatal risk. Further analyses suggested that this protective effect of nonparental care was in part due to nonkin rather than kin care. 相似文献
107.
108.
109.
CHARTER SCHOOLING AND SOCIAL JUSTICE 总被引:1,自引:0,他引:1
Kathleen Knight Abowitz 《Educational theory》2001,51(2):151-170
110.