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   26133篇
  免费   1525篇
  国内免费   5篇
各国政治   1036篇
工人农民   1032篇
世界政治   1844篇
外交国际关系   803篇
法律   17797篇
中国共产党   7篇
中国政治   225篇
政治理论   4682篇
综合类   237篇
  2020年   492篇
  2019年   546篇
  2018年   647篇
  2017年   761篇
  2016年   760篇
  2015年   641篇
  2014年   660篇
  2013年   2527篇
  2012年   669篇
  2011年   768篇
  2010年   842篇
  2009年   817篇
  2008年   729篇
  2007年   738篇
  2006年   787篇
  2005年   667篇
  2004年   643篇
  2003年   670篇
  2002年   584篇
  2001年   997篇
  2000年   811篇
  1999年   710篇
  1998年   371篇
  1997年   285篇
  1996年   287篇
  1995年   288篇
  1994年   325篇
  1993年   299篇
  1992年   511篇
  1991年   546篇
  1990年   511篇
  1989年   476篇
  1988年   488篇
  1987年   425篇
  1986年   490篇
  1985年   465篇
  1984年   414篇
  1983年   381篇
  1982年   311篇
  1981年   304篇
  1980年   241篇
  1979年   303篇
  1978年   211篇
  1977年   176篇
  1976年   157篇
  1975年   189篇
  1974年   191篇
  1973年   160篇
  1972年   145篇
  1971年   143篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
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   
63.
Kornai's thesis that shortage results from demand expansions bred by the soft budget constraint, derives from his implicit assumption that price regimes of input and output firms are different. Since any firm is both an input and an output firm, which discards the assumption as logically untenable, excess demand can only turn up because of lower than contracted inputs of labor and management that are not offset by an adequate downward adjustment of earnings. Expansions of demand that appear to be autonomous, are incited by uncertain deliveries of inputs, that is, by inefficiency (of output firms) as well. A by far the largest part of excess demand can be explained by state preferences for fast growth. As planners are more successful in generating investment, and the ensuing consumer, demand than in expanding production, shortage is inevitable regardless of the character of the firms' budget constraints.  相似文献   
64.
65.
66.
67.
68.
69.
Research has indicated that school factors such as communal school organization and student bonding are predictive of school disorder, with greater communal organization and greater student bonding leading to less delinquency and victimization. Data from a nationally representative sample of 254 public, nonalternative, secondary schools were used to examine structural equation models representing hypothesized relationships among communal school organization, student bonding, and school disorder. The hypothesis that communally organized schools would have less disorder held true for teacher victimization and student delinquency, but not for student victimization. In addition, the hypothesis that the relationship between communal school organization and school disorder would be mediated by student bonding was supported for student delinquency, but not for teacher victimization.  相似文献   
70.
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