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   19255篇
  免费   535篇
各国政治   811篇
工人农民   711篇
世界政治   1559篇
外交国际关系   644篇
法律   11872篇
中国共产党   2篇
中国政治   96篇
政治理论   3911篇
综合类   184篇
  2020年   236篇
  2019年   264篇
  2018年   343篇
  2017年   413篇
  2016年   447篇
  2015年   308篇
  2014年   368篇
  2013年   1818篇
  2012年   459篇
  2011年   486篇
  2010年   371篇
  2009年   407篇
  2008年   492篇
  2007年   516篇
  2006年   505篇
  2005年   455篇
  2004年   462篇
  2003年   478篇
  2002年   438篇
  2001年   802篇
  2000年   721篇
  1999年   569篇
  1998年   304篇
  1997年   259篇
  1996年   217篇
  1995年   218篇
  1994年   263篇
  1993年   234篇
  1992年   391篇
  1991年   424篇
  1990年   382篇
  1989年   413篇
  1988年   392篇
  1987年   400篇
  1986年   406篇
  1985年   385篇
  1984年   315篇
  1983年   348篇
  1982年   271篇
  1981年   265篇
  1980年   193篇
  1979年   269篇
  1978年   180篇
  1977年   168篇
  1976年   145篇
  1975年   147篇
  1974年   161篇
  1973年   145篇
  1972年   137篇
  1971年   115篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
In recent years, legislators in all fifty states have given grandparents rights to petition for visitation privileges with grandchildren that can be enforced over parental objections. Grandparent visitation rights reflect an effort to protect meaningful relationships children enjoy with nonparental caregivers, enlist the assistance of extended family when the child's nuclear family is disrupted, and defend the interests of grandparents themselves. This psycholegal analysis explores the direct and indirect consequences of grandparent visitation statutes for family functioning. Statutory provisions are summarized, and the effects of these statutes are evaluated in light of what is known about the role of grandparents in child development, how courts evaluate children's "best interests" in grandparent visitation disputes, and how these statutes can alter family functioning in informal ways. The authors conclude that there are risks as well as benefits to children and families in grandparent visitation statutes, and suggest directions for procedural and statutory reform.  相似文献   
43.
Although there has been speculation regarding the pervasiveness and nature of judicial decisions regarding life-sustaining medical treatment (LSMT), no attempt has been made to empirically assess their prevalence or the issues they address. An exploratory study utilizing a mail survey of a nationwide random sample (N = 905) of state trial court judges was conducted to provide initial information regarding this decision-making process. Twenty-two percent of the responding judges had heard at least one LSMT case, and judicial review did not appear endemic to particular states. The number of judges hearing LSMT cases dropped from 1975 to 1981 but has increased since then. Three major issues predominate: patient competency, appointment of a surrogate decisionmaker, and resolution of the ultimate issue of forgoing LSMT. Relatively few cases either contested a prior directive's validity or involved imposing sanctions for instituting or forgoing LSMT. Although subject to different interpretations, the results suggest the courts are having a significant impact on certain aspects of the LSMT decision-making process. However, the infrequency with which any one judge is called upon to make an LSMT decision causes concern about the judiciary's ability to respond in a timely and appropriate manner. With their potential for a profound effect on the actions of health care providers, greater attention to this decision-making process is warranted.  相似文献   
44.
45.
46.
47.
The remains of an unidentified female neonate were discovered in a field in central Missouri. Examination revealed bilateral absence of the parietal bones. A search of the literature describing similar defects suggests that the present case represents a unique condition, described here for the first time.  相似文献   
48.
49.
50.
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