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   19905篇
  免费   766篇
各国政治   791篇
工人农民   709篇
世界政治   1463篇
外交国际关系   577篇
法律   12803篇
中国共产党   1篇
中国政治   120篇
政治理论   4081篇
综合类   126篇
  2020年   277篇
  2019年   361篇
  2018年   404篇
  2017年   487篇
  2016年   493篇
  2015年   384篇
  2014年   432篇
  2013年   1859篇
  2012年   419篇
  2011年   539篇
  2010年   474篇
  2009年   520篇
  2008年   527篇
  2007年   505篇
  2006年   508篇
  2005年   467篇
  2004年   457篇
  2003年   450篇
  2002年   450篇
  2001年   822篇
  2000年   714篇
  1999年   543篇
  1998年   325篇
  1997年   261篇
  1996年   250篇
  1995年   239篇
  1994年   270篇
  1993年   256篇
  1992年   401篇
  1991年   440篇
  1990年   419篇
  1989年   424篇
  1988年   400篇
  1987年   379篇
  1986年   457篇
  1985年   428篇
  1984年   369篇
  1983年   358篇
  1982年   247篇
  1981年   232篇
  1980年   191篇
  1979年   259篇
  1978年   151篇
  1977年   176篇
  1976年   153篇
  1975年   104篇
  1974年   156篇
  1973年   139篇
  1972年   133篇
  1971年   106篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
972.
In developing their influential equivalence theorem Bradford and Oates (1971) implicitly assume that there is a lump sum grant only. This paper explores whether the equivalence result continues to hold when the lump sum grant is part of a program of grants-in-aid which includes a matching grant. It is shown that the equivalence results as stated by Bradford and Oates does not hold in these more general circumstances; however, a much weaker equivalence result does hold. This finding is important because there has been a tendency in the empirical literature to assume that the equivalence result holds under quite general circumstances. It is also shown here that the combined use of lump sum and matching grants can produce a reverse flypaper effect.  相似文献   
973.
Sociology in the 1990s   总被引:3,自引:0,他引:3  
  相似文献   
974.
975.
The cold war dominated American perceptions of the People's Republic of China during the 1950s and 1960s, and opinions of China were correspondingly negative. Improved Sino-American relations, accompanied by domestic reforms in China, led to a gradual improvement in American attitudes toward China during the 1970s and 1980s. By the late 1980s, Americans held positive perceptions of China and its relations with the United States, but continued to view the People's Republic as communist and undemocratic. This sort of inconsistency is characteristic of periods of cognitive transition: some established perceptions are slower to change than others, and this results in structural imbalance. The Tiananmen Square massacre of June 1989 interrupted this transitional process and sent perceptions of China shooting back toward balanced, cold war stereotypes. The massacre set the Chinese government in a clear symbolic struggle against freedom and democracy. This rekindled latent cold war images of China and elicited disapproving rhetoric from American leaders. The result was a quick reversion to negative perceptions of China, structured by a lingering cold war schema. These processes are demonstrated through the presentation of a study that explores the cognitive structure of perceptions of China both before and after the massacre.  相似文献   
976.
This longitudinal study investigates parent and child predictors of adolescents' perceived social support from peers. Adolescents (285) and their parents filled out surveys when students were 11 and 15 years of age. Parent reports of their own social support and child reports of parental support to them, depression, and self-esteem were used as predictors of adolescents' peer social support. Path analyses revealed functional dissimilarity in the predictive model, for boys and girls. For boys and girls, the amount of spousal support parents' reported impacted the amount of parent to child support that children reported. For boys, this relationship impacted their perceptions of peer support indirectly through depression. However, for girls, parents' own supportive relationships directly impacted both their self-esteem and depression, above and beyond parent to child support, which then impacted girls' peer social support.  相似文献   
977.
978.
Bryant RA  Harvey AG 《危机》2000,21(2):90-94
Counseling skills were evaluated in a telephone counseling service for Vietnam veterans. Thirty simulated crisis calls were made to telephone counselors by experienced clinical psychologists. The counselors' responses were rated on dimensions that indexed general counseling skills, knowledge of veteran needs, and provision of appropriate advice. Whereas the majority of callers demonstrated adequate counseling skills, many lacked knowledge of veterans' posttraumatic stress, common veteran terminology, and the nature of veterans' experiences. The findings suggest that telephone counseling services that target specific populations should employ comprehensive training to ensure that counselors possess adequate and relevant knowledge about callers and their presenting problems. The simulated caller paradigm appears to be an effective paradigm for training and evaluation of telephone counselors.  相似文献   
979.
980.
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