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   17953篇
  免费   1245篇
各国政治   715篇
工人农民   842篇
世界政治   1191篇
外交国际关系   578篇
法律   12412篇
中国共产党   2篇
中国政治   105篇
政治理论   3220篇
综合类   133篇
  2021年   88篇
  2020年   439篇
  2019年   448篇
  2018年   567篇
  2017年   591篇
  2016年   672篇
  2015年   512篇
  2014年   544篇
  2013年   1895篇
  2012年   498篇
  2011年   508篇
  2010年   542篇
  2009年   573篇
  2008年   529篇
  2007年   521篇
  2006年   538篇
  2005年   454篇
  2004年   448篇
  2003年   368篇
  2002年   425篇
  2001年   682篇
  2000年   614篇
  1999年   490篇
  1998年   256篇
  1997年   183篇
  1996年   204篇
  1995年   202篇
  1994年   177篇
  1993年   185篇
  1992年   312篇
  1991年   317篇
  1990年   307篇
  1989年   290篇
  1988年   320篇
  1987年   276篇
  1986年   329篇
  1985年   330篇
  1984年   258篇
  1983年   243篇
  1982年   187篇
  1981年   162篇
  1980年   150篇
  1979年   222篇
  1978年   119篇
  1977年   97篇
  1976年   78篇
  1975年   99篇
  1974年   127篇
  1973年   85篇
  1972年   83篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
921.
922.
Aid and ideology     
Abstract. A conceptualization of international aid-giving behaviour, based on the notion of bounded rationality and involving the interaction of objective and subjective factors, is developed. From this conceptualization, four hypotheses are deduced to explain the variation of development aid expenditures as a percentage of GNP: the instrumental hypothesis, the humanitarian hypothesis, the ideological hypothesis, and the incremental hypothesis. These hypotheses are tested on data concerning aid allocations of 17 OECD donors for four points in time (1966, 1971, 1976, and 1981), through the use of a regression model. Results show that the model as a whole explains between 85% and 96% of the variance in the dependent variable. Tests of individual hypotheses show that the instrumental explanation is the best predictor of aid as a percentage of GNP if a lagged value of the dependent variable is used on the right-hand side of the equation. When the lagged value of the dependent variable is dropped from the equations, the best predictor is the ideological explanation. The contribution of the humanitarian explanation to the explained variance is negligible.  相似文献   
923.
User charges, which have become an important revenue enhancement device during the 1980s, have also raised a variety of counter-charges. This study examines three new mandatory Customs Service fees—for processing passengers, conveyances, and merchandise entering the United States and for special services at small airports—along with their differences and changes over time (in rate structure, exemptions, dedicated accounts, and disposition of funds). Despite support for the charges, opposition to some has arisen because of their cost to the private sector, violation of certain assumptions behind user fees, competing international obligations and policies, rival institutional interests and powers of Congress and the presidency, and changing fiscal conditions.  相似文献   
924.
925.
926.
927.
928.
929.
930.
Eighty college males were given an expanded identity status interview which included two new interpersonal-sexual areas, “attitudes towards sexual expression” and “sex-role beliefs.” The relative contribution of the new content areas as well as of the standard three areas (occupation, religion, and politics) to overall identity status was assessed by noting the extent of correspondence. Identity status in each content area was also compared with performance on the dependent variable of cognitive complexity. Ideology contributed more than occupation both to overall status rating, as well as to discrimination on the dependent variable. Results on the two new areas supported the view that interpersonal-sexual concerns are important for men's identity development as well as for women's. The finding that all interview areas corresponded well with overall identity status and discriminated significantly on the dependent measure leads to the suggestion that the process variables of crisis and commitment may so overshadow a particular content area that any content of personal relevance for the late adolescent might be used in investigating ego identity development.  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