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   8846篇
  免费   258篇
各国政治   448篇
工人农民   402篇
世界政治   508篇
外交国际关系   263篇
法律   5604篇
中国共产党   3篇
中国政治   57篇
政治理论   1742篇
综合类   77篇
  2020年   108篇
  2019年   143篇
  2018年   204篇
  2017年   222篇
  2016年   215篇
  2015年   150篇
  2014年   153篇
  2013年   967篇
  2012年   230篇
  2011年   228篇
  2010年   192篇
  2009年   213篇
  2008年   261篇
  2007年   223篇
  2006年   257篇
  2005年   227篇
  2004年   232篇
  2003年   204篇
  2002年   214篇
  2001年   266篇
  2000年   267篇
  1999年   193篇
  1998年   119篇
  1997年   121篇
  1996年   111篇
  1995年   100篇
  1994年   96篇
  1993年   112篇
  1992年   184篇
  1991年   200篇
  1990年   180篇
  1989年   181篇
  1988年   162篇
  1987年   180篇
  1986年   176篇
  1985年   164篇
  1984年   157篇
  1983年   167篇
  1982年   97篇
  1981年   91篇
  1980年   77篇
  1979年   106篇
  1978年   76篇
  1977年   74篇
  1976年   60篇
  1975年   59篇
  1974年   63篇
  1973年   73篇
  1972年   63篇
  1968年   53篇
排序方式: 共有9104条查询结果,搜索用时 15 毫秒
41.
42.
Schmitt  David E. 《Publius》1988,18(2):33-45
Northern Ireland is a bicommunal society in which Protestantsare numerically dominant; Roman Catholics constitute virtuallyall of the remaining population. On the island as a whole, Protestantsare heavily outnumbered; the Republic of Ireland (the "South")has a population that is about 96 percent Catholic. Social segregationof the two northern communities is relatively distinct, andthere is little crosscutting between groups that might lessenbicommunal conflict. A reciprocal relationship exists betweenthe social system and political structures. Northern Irish politicalinstitutions followed the Westminster model, which facilitatedthe political exclusion of Catholics and impeded social as wellas political integration. The bicommunal social structure hasimpeded the development of more accommodating political structures.Geographic issues and external linkages compound the politicalproblem. Northern Irish politics can be viewed as a "dual dyad"in which the United Kingdom and the Republic of Ireland arecritical components. Psychological dimensions of Northern Irishbicommunalism further exacerbate the conflict.  相似文献   
43.
44.
45.
Easterbrook G  Barry J  Thomas R  Clift E  Wingert  Hager M  Cohn B 《Newsweek》1992,120(22):30, 32-34, 36
Lobbyists, entrenched forces in congress and self-interested friends will try to stymie Clinton's efforts. A look at four key arenas of combat.  相似文献   
46.
The author examines the effect of rapid population growth due to migration on the parish of Tenango del Valle, Mexico, during the eighteenth century. She gives special consideration to the impact on quality of life in indigenous villages, especially for widows and female heads of households who were impoverished as a result of discriminatory land transactions. Data are mainly from the parish register for 1770.  相似文献   
47.
48.
49.
Analysis of a sample of 1108 radii corresponding to 567 black and white North Americans in the Terry Collection at the Smithsonian Institution demonstrates that the diameter of the radial head is an accurate sex discriminator for human remains. A simple "radial-head method" of sex determination consists of measuring the maximum and minimum diameters of the head and comparing such measurements with the test cutoff points. The subject is female when the maximum radial head diameter (either left or right) is less than or equal to 21 mm, and male when the maximum diameter (either left or right) is greater than or equal to 24 mm. The same decisions apply to the minimum diameters of 20 mm or less and 23 mm or more, respectively. When the maximum diameter is 23 mm or the minimum is 22 mm, the subject is more likely male; when the maximum diameter is 22 mm or the minimum is 21 mm, the subject is more likely female. The sample frequency of any one of these latter diameters is never more than 16%. Cross-validation of the method with a sample of 50 pairs of radii of the Terry Collection, different from the original specimens, resulted in 92% sexing accuracy when using the left radius singly, 94% accuracy when using the right radius singly, and 96% accuracy when using both radii jointly.  相似文献   
50.
During preliminary examination of the body of a homicide victim, a peculiar red "fiber" was noticed and recovered. Initially believing this to be a carpet fiber, the item was subjected to fiber analysis. It was found to be a short coiled particle not like any known natural or synthetic fabric fiber. Subsequent examinations determined this "fiber" to be the larva of a common freshwater midge (Diptera; Chironomidae). Chironomid larvae have been observed on other bodies recovered from freshwater environments. Entomological studies of this organism have led to the conclusion that the presence of chironomid larvae indicates submersion of the body.  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