首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   7432篇
  免费   127篇
  国内免费   1篇
管理学   995篇
民族学   33篇
人口学   760篇
丛书文集   32篇
理论方法论   661篇
综合类   90篇
社会学   3576篇
统计学   1413篇
  2023年   40篇
  2020年   97篇
  2019年   141篇
  2018年   168篇
  2017年   254篇
  2016年   178篇
  2015年   124篇
  2014年   160篇
  2013年   1301篇
  2012年   228篇
  2011年   206篇
  2010年   147篇
  2009年   134篇
  2008年   147篇
  2007年   142篇
  2006年   171篇
  2005年   154篇
  2004年   148篇
  2003年   136篇
  2002年   153篇
  2001年   164篇
  2000年   168篇
  1999年   173篇
  1998年   137篇
  1997年   133篇
  1996年   126篇
  1995年   110篇
  1994年   107篇
  1993年   110篇
  1992年   116篇
  1991年   128篇
  1990年   125篇
  1989年   144篇
  1988年   85篇
  1987年   109篇
  1986年   93篇
  1985年   114篇
  1984年   97篇
  1983年   103篇
  1982年   80篇
  1981年   81篇
  1980年   76篇
  1979年   81篇
  1978年   83篇
  1977年   60篇
  1976年   66篇
  1975年   61篇
  1974年   59篇
  1973年   48篇
  1971年   41篇
排序方式: 共有7560条查询结果,搜索用时 10 毫秒
991.
Using the 1994–1998 waves of the Current Population Survey—Child Support Supplement (N =5,387), the aims of this study are to document child support obligation rates of nonresident fathers, to examine the effect of the obligation rate on child support compliance, and to calculate the trade‐off between fathers’ financial responsibility and children's well‐being, paying particular attention to low‐income fathers. The results indicate that low‐income fathers have high child support obligation rates, which significantly reduce their child support compliance. Although lowering the obligation rate for these fathers may improve their compliance, it does not fully offset the lowered obligation amounts and leads to a 30% net payment loss for welfare mothers and a 43% loss for nonwelfare mothers. Policy implications are discussed.  相似文献   
992.
B B Johnson 《Child welfare》1987,66(2):165-173
The alliance of social work and theater is a natural and powerful coalition. The cooperation of two undergraduate programs to produce a preventive program on sexual abuse education reached over 4,000 children. Social work was the catalyst in terms of identifying the need, obtaining grant money, and developing community support. Theater provided the talent to produce an outstanding performance. Communities planning to develop successful prevention programs must develop community support, clear goals, a well-trained follow-up team, education for professionals who work with children daily, a clear channel for reporting abuse, and an evaluation process. The use of volunteers keeps the cost of the project to a minimum.  相似文献   
993.
994.
The authors examine the implications of G. L. v. Zumwalt, a case that resulted in a far-reaching consent decree that mandates specific reforms in policy and practice to be implemented by a public social welfare agency in its delivery of services to foster children and their families.  相似文献   
995.
The principal objective of this paper is to conduct a log-linear analysis of patterns of childlessness among Catholic and non-Catholic women in the United States. We address this issue by examining white women between the ages of thirty-five and forty-four, ascertaining whether they are voluntarily, involuntarily, or temporarily childless or childed. Given the long-standing emphasis of the Catholic Church regarding the importance of children in marriage and the family, an emphasis which was not reversed during the Second Vatican Council, we suggest that even after controlling for religious activity and educational attainment, Catholic women should be less disposed than non-Catholic women to choose voluntarily to have no children. We review various aspects of Church doctrine leading to such an hypothesis. Our results do not suggest an “end” to Catholic-non-Catholic differentials in childlessness. Catholic women between the ages of thirty-five and forty-four in 1976 were very far apart from non-Catholic women with respect to the voluntary decision to have no children. And they are also very different from non-Catholic women regarding patterns of involuntary childlessness. These differential patterns of voluntary and involuntary childlessness are discussed and analyzed.  相似文献   
996.
Recursive estimates of a probability density function (pdf) are known. This paper presents recursive estimates of a derivative of any desired order of a pdf. Let f be a pdf on the real line and p?0 be any desired integer. Based on a random sample of size n from f, estimators f(p)n of f(p), the pth order derivatives of f, are exhibited. These estimators are of the form n?1∑nj=1δjp, where δjp depends only on p and the jth observation in the sample, and hence can be computed recursively as the sample size increases. These estimators are shown to be asymptotically unbiased, mean square consistent and strongly consistent, both at a point and uniformly on the real line. For pointwise properties, the conditions on f(p) have been weakened with a little stronger assumption on the kernel function.  相似文献   
997.
Abstract In order to match birth and family planning acceptance records and thereby to obtain estimates of pre- and post-acceptance fertility, use is made of seven-digit national identity card numbers, issued to all adult West Malaysians. These unique numbers are recorded on live-birth records and national family planning programme acceptor records of West Malaysian women. The application and preliminary results of this method of direct computer matching of these sets of records for assessing the effects of a family planning programme on fertility are described. Pre- and post-acceptance fertility rates are presented in terms of contraceptive methods used, and the key characteristics of race and age of programme acceptors, and are discussed in terms of marital duration and number of children at the time of acceptance.  相似文献   
998.
999.
1000.
Foster children represent a high-risk group for physical, emotional, and social health problems, yet few federal or state policies explicitly address foster child health. This article reviews foster child health and the legal background for policy, then discusses components of a comprehensive health care supervision program.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号