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   13963篇
  免费   215篇
各国政治   658篇
工人农民   1205篇
世界政治   823篇
外交国际关系   640篇
法律   7012篇
中国政治   35篇
政治理论   3731篇
综合类   74篇
  2023年   31篇
  2020年   82篇
  2019年   106篇
  2018年   1381篇
  2017年   1328篇
  2016年   1157篇
  2015年   173篇
  2014年   171篇
  2013年   972篇
  2012年   325篇
  2011年   1066篇
  2010年   1132篇
  2009年   715篇
  2008年   908篇
  2007年   927篇
  2006年   192篇
  2005年   237篇
  2004年   362篇
  2003年   329篇
  2002年   209篇
  2001年   111篇
  2000年   120篇
  1999年   94篇
  1998年   135篇
  1997年   112篇
  1996年   124篇
  1995年   110篇
  1994年   95篇
  1993年   89篇
  1992年   73篇
  1991年   93篇
  1990年   78篇
  1989年   69篇
  1988年   81篇
  1987年   87篇
  1986年   85篇
  1985年   54篇
  1984年   80篇
  1983年   80篇
  1982年   74篇
  1981年   54篇
  1980年   49篇
  1979年   50篇
  1978年   51篇
  1977年   55篇
  1976年   26篇
  1975年   26篇
  1974年   27篇
  1973年   34篇
  1972年   23篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
111.
112.
The “tragedy of the commons” is the familiar problem that open access to a common property resource leads to overexploitation and to zero profits. A commons model is applied to an example of state sponsored private violence, the practice of privateering or licensed piracy. It is predicted that the presence of uncertainty about the value of the prey will reduce the amount of exploitation effort, and that industry profits may be positive due to both uncertainty and heterogeneous exploiters. Using data from England's wars with France and Spain between 1625 and 1630, the model suggests that the commons, represented by enemy merchant shipping, was not overexploited and that privateering profits were positive. The dynamic paths of privateering effort, ships seized, and individual firm profits were, however, consistent with the normal expectation that commons exploitation will peak and fall, as competition drives down returns through entry. “England was never richer than when at war with Spain.” Sir Edward Coke   相似文献   
113.
Measuring School-Related Stressors in Adolescents   总被引:2,自引:0,他引:2  
Some 1620 high school students responded to 68 items that measure adolescent stressors. Thirty-five of the items were based on J. P. Kohn and G. H. Frazer's Academic Stress Scale [1(1986) An Academic Stress Scale: Identification and Rated Importance of Academic Stressors, Psychological Reports, Vol. 59, pp. 415–426] developed in the United States, while the remaining 33 items were developed from P. Strutynski's [(1985) A Survey of Queensland Year 10, 11 and 12 Student Attitudes to Schools and Schooling, State Planning Committee, International Youth Year, Brisbane] lists of the most frequently named problems of 2336 Australian high school students. Confirmatory Factor Analysis was used to test and develop a measurement model developed from an extensive review of previous scales. The High School Stressors Scale emerged from the analytic process and measures nine school-related stressors. For researchers focusing on school-related problems and stressors among adolescents, the HSSS promises to be a very useful instrument. It has sound construct and predictive validity and adequate reliability, as demonstrated by the goodness-of-fit indices the squared multiple correlations.  相似文献   
114.
The author relates three cases of conflict which he has observed in Cairo and recognizes patterns that cut across each of these stories. The stories shed light on how people in Egypt approach and deal with conflict; in addition, they may help readers understand conflict in their home culture as well as be instructive on how to listen to conflict in different cultures. Six general themes in the way Egyptians approach or handle conflict are identified, and each of these themes is analyzed.  相似文献   
115.
116.
117.
118.
Book reviews     
Stephen Chan and Andrew J. Williams (eds), Renegade states: The Evolution of Revolutionary Foreign Policy (Manchester: Manchester University Press, 1994).

Adam Roberts and Benedict Kingsbury (eds), United Nations, Divided World. The UN's Role in International Relations 2nd edition (Oxford: Clarendon Press, 1993)

G. Hastedt and K. Knickrehm, (eds), Toward the Twenty‐first Century. A Reader in World Politics (New Jersey: Prentice Hall, 1994).

A. J.R. Groom and Margot Light (eds), Contemporary International Relations: A Guide to Theory (London: Pinter Publishers, 1994).  相似文献   

119.
120.
A new threat to national security has been found: electronic information warfare (EIW). It is the hottest (and most overhyped) issue inside the Beltway and encompasses everything from encryption to technology transfer, including both legitimate battlefield applications and ominous defense measures to protect the U.S. economy and culture.  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