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   17934篇
  免费   524篇
各国政治   767篇
工人农民   712篇
世界政治   1493篇
外交国际关系   611篇
法律   10642篇
中国共产党   2篇
中国政治   125篇
政治理论   3921篇
综合类   185篇
  2020年   226篇
  2019年   271篇
  2018年   353篇
  2017年   414篇
  2016年   444篇
  2015年   299篇
  2014年   358篇
  2013年   1810篇
  2012年   429篇
  2011年   443篇
  2010年   358篇
  2009年   397篇
  2008年   465篇
  2007年   481篇
  2006年   456篇
  2005年   403篇
  2004年   414篇
  2003年   434篇
  2002年   390篇
  2001年   692篇
  2000年   631篇
  1999年   517篇
  1998年   302篇
  1997年   257篇
  1996年   214篇
  1995年   218篇
  1994年   260篇
  1993年   231篇
  1992年   350篇
  1991年   384篇
  1990年   346篇
  1989年   360篇
  1988年   330篇
  1987年   345篇
  1986年   355篇
  1985年   345篇
  1984年   299篇
  1983年   329篇
  1982年   277篇
  1981年   252篇
  1980年   187篇
  1979年   255篇
  1978年   170篇
  1977年   159篇
  1976年   140篇
  1975年   129篇
  1974年   141篇
  1973年   122篇
  1972年   119篇
  1971年   98篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
982.
983.
984.
985.
Sexual decision making, perceptions of responsibility for birth control and pregnancy, and knowledge of contraception and the consequences of teenage pregnancy were assessed among 251 high-risk seventh- and eighth-grade black, inner-city adolescents to determine these young peoples' need for information. Survey results indicated that these adolescents were aware of contraceptive methods, but lacked practical information about requirements for obtaining them or method effectiveness. Many students were uninformed about the circumstances under which pregnancy can occur. Males indicated a willingness to have intercourse, regardless of the contraceptives used, if any, and believed responsibility for use of a birth control method belonged to females. Females believed themselves to be responsible for contraceptive utilization and preferred intercourse with adequate protection. Both genders endorsed the notion of mutual responsibility for an unplanned pregnancy and related decisions. Implications for school-based family life education programs for young adolescents are discussed.This research was supported by grants from the Illinois Department of Children and Family Services and the Pittway Charitable Trust, to the Center for Health Services and Policy Research of Northwestern University; the project was administered by the Ounce of Prevention Fund. Portions of this paper were presented at the 112th annual meeting of the American Public Health Association at Anaheim, California, November 1984. Conclusions or opinions expressed in this article are those of the authors and do not necessarily reflect the views of the Center for Population Options, Northwestern University, or the State University of New York at Buffalo.Received Ph.D. from Loyola University of Chicago. Major interests include policy analysis and maternal and child health care.Received Ph.D. from the State University of New York at Buffalo. Major interests include evaluation of the effectiveness of maternal and child health services.  相似文献   
986.
987.
988.
Abstract: There is an ambivalence in attitudes to public administration as a field of study among both academics and practitioners in Australia. Teachers, researchers, students, public servants seeking training and managers have differing interests and expectations. Disagreements about the field have contributed to the lack of a unified framework of concepts, while the field has fragmented into public administration, public policy and public management, aside from other divisions such as "old" versus "new" public administration. "Education" and "training" have taken diverging paths and academics and practitioners have drifted apart. There needs to be a closer dialogue that can only be based on a generally agreed paradigm for Australian Public Administration as a field of study.  相似文献   
989.
In the economic analysis of the theory of government, two views of government are evident. The Pigovian view sees government as a benevolent actor striving to correct for the inadequacies and excesses of an unrestrained marketplace. The ‘Public Choice’ view of government portrays government as the tool of special interest groups as likely to generate distortions as to correct them. In this paper, a model of government that incorporates both views will be developed and then empirically tested. The model developed assumes that all expenditures by the government are inputs into the private sector production. Treating government expenditures as inputs into the production of private sector output, there is some optimal size of government that maximizes private sector output. The model incorporates a general production function for private sector output. Output is a function of private labor, private capital, and government expenditures. The Pigovian and Public Choice views of government are reflected in the assumed impact of G on the marginal productivities of L and K. The model is tested using United States data and a Cobb-Douglas production function. Estimates indicate that the 1983 level of government expenditures exceeds by 87 percent the level that would maximize private sector output. Reducing government from $ 491 billion to $ 263 billion and shifting the freed labor to the private sector would increase output from $ 1187 billion to $ 1451 billion.  相似文献   
990.
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