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   15407篇
  免费   491篇
各国政治   544篇
工人农民   1271篇
世界政治   654篇
外交国际关系   523篇
法律   9678篇
中国政治   39篇
政治理论   3149篇
综合类   40篇
  2020年   162篇
  2019年   176篇
  2018年   1427篇
  2017年   1381篇
  2016年   1220篇
  2015年   263篇
  2014年   201篇
  2013年   804篇
  2012年   342篇
  2011年   1070篇
  2010年   1198篇
  2009年   794篇
  2008年   879篇
  2007年   842篇
  2006年   175篇
  2005年   227篇
  2004年   352篇
  2003年   297篇
  2002年   163篇
  2001年   315篇
  2000年   261篇
  1999年   230篇
  1998年   107篇
  1997年   78篇
  1996年   87篇
  1995年   114篇
  1994年   112篇
  1993年   91篇
  1992年   155篇
  1991年   159篇
  1990年   149篇
  1989年   163篇
  1988年   131篇
  1987年   140篇
  1986年   131篇
  1985年   133篇
  1984年   114篇
  1983年   126篇
  1982年   90篇
  1981年   79篇
  1980年   57篇
  1979年   116篇
  1978年   78篇
  1977年   65篇
  1976年   53篇
  1975年   49篇
  1974年   55篇
  1973年   56篇
  1972年   44篇
  1968年   41篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
931.
Several empirical studies have suggested that legislators engage in a surprisingly large degree of on-the-job consumption, or ideological behavior. These findings cast doubt on the hypothesis that legislators can be modelled as though they seek to maximize political support. This paper attempts to determine whether commonly used proxies for ideology in fact represent behavior to which voters are averse. The results show that legislators who engage in more of this behavior lose general-election support without generally receiving compensating increases in partyprimary support. A corollary to this result is that voters punish shirking legislators significantly.  相似文献   
932.
Discrimination Distress During Adolescence   总被引:1,自引:0,他引:1  
Amidst changing patterns of accommodation and conflict among American ethnic groups, there remains a paucity of research on the nature and impact of racial and ethnic discrimination on development in multiethnic samples of youth. The Adolescent Discrimination Distress Index along with measures of caregiver racial bias preparation and self-esteem was administered to 177 adolescents drawn from 9th–12th graders self-identified as African American, Hispanic, East Asian, South Asian, and non-Hispanic white. Youth from all ethnic backgrounds reported distress associated with instances of perceived racial prejudice encountered in educational contexts. Instances of institutional discrimination in stores and by police were higher for older youth and particularly for African American and Hispanic teenagers. Encounters with peer discrimination were reported most frequently by Asian youth. Reports of racial bias preparation were associated with distress in response to institutional and educational discrimination and self-esteem scores were negatively correlated with distress caused by educational and peer discrimination. The importance of research on discrimination distress to understanding adolescent development in multiethnic ecologies is discussed here.  相似文献   
933.
934.
935.
936.
937.
938.
939.
2016 coroner's crematorial inquests of the Bonn Institute of Legal Medicine over a 3 years' period were evaluated and the statements in the death certificates were compared to those ones of the Statistical Country Office of Northrhine-Westphalia. No significant differences were found with respect to age, gender and reason of death. However, the number of insufficiently classified deaths with respect to the reason of death were overrepresented especially in cases of older women, while the number of unnatural deaths was generally underrepresented. According to legal medical criteria 2 1/4 per cent of the deaths were falsely classified as natural. Only in 2 cases an autopsy was accomplished. Other author's statements on the validity of death certificates were confirmed.  相似文献   
940.
After surgical treatment of an inguinal hernia, a 26-year-old male was discharged from hospital with a well healing surgical wound. Four weeks later he was admitted again with a major localized painful swelling of the soft tissues, whereas the clinical examination revealed no further local or systemic signs of inflammation. The immediate operation disclosed no abscess formation, but a large colliquation necrosis of the subcutaneous tissue with an outstanding petroleum-like odour. On toxicological examination of the necrotic tissue, a respective petroleum distillate was found. The patient was confronted with the suspicion of having injected the petroleum preparation himself to prolong the wound healing and finally admitted the self-mutilating behaviour. The pathophysiology, clinical history and morphological findings are discussed in comparison with case reports of chemically induced self-mutilation.  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