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   25185篇
  免费   1239篇
各国政治   914篇
工人农民   1779篇
世界政治   1306篇
外交国际关系   814篇
法律   16643篇
中国共产党   2篇
中国政治   111篇
政治理论   4765篇
综合类   90篇
  2023年   78篇
  2021年   91篇
  2020年   430篇
  2019年   451篇
  2018年   1764篇
  2017年   1705篇
  2016年   1614篇
  2015年   568篇
  2014年   554篇
  2013年   1834篇
  2012年   654篇
  2011年   1358篇
  2010年   1478篇
  2009年   1104篇
  2008年   1191篇
  2007年   1148篇
  2006年   527篇
  2005年   496篇
  2004年   603篇
  2003年   500篇
  2002年   431篇
  2001年   676篇
  2000年   612篇
  1999年   483篇
  1998年   250篇
  1997年   185篇
  1996年   211篇
  1995年   215篇
  1994年   189篇
  1993年   178篇
  1992年   314篇
  1991年   314篇
  1990年   297篇
  1989年   277篇
  1988年   307篇
  1987年   261篇
  1986年   323篇
  1985年   317篇
  1984年   257篇
  1983年   235篇
  1982年   182篇
  1981年   154篇
  1980年   143篇
  1979年   227篇
  1978年   122篇
  1977年   101篇
  1975年   94篇
  1974年   125篇
  1973年   79篇
  1972年   79篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
The peer context is a central focus in research on adolescent risk behaviors but few studies have investigated the role of the peer context in the perpetration of adolescent dating violence. This longitudinal study examined between-subjects and within-person contemporaneous and lagged effects of peer attributes, measured with social network analyses, on trajectories of dating violence perpetration and determined if effects varied by grade and/or sex of the adolescent. Data are from adolescents who participated in a five-wave panel study beginning when they were in 7 through 9th grade and ending when they were in 10 through 12th grade (n = 3,412); half were male, 40.5 % were white, 49.9 % were black and 10.4 % were of another race/ethnicity. Significant between-subjects effects indicate that adolescents who typically have friends who use dating violence, and girls who are typically high in social status, are at increased risk for using dating violence throughout adolescence. Adolescents who typically have high quality friendships and girls who typically have friends with pro-social beliefs are at decreased risk for using dating violence throughout adolescence. Significant within-person contemporaneous effects indicate that both boys and girls reported lower levels of dating violence than usual at times when they had more friends with pro-social beliefs, and reported higher levels of dating violence than usual at times when they had higher social status. None of the lagged effects were significant and none of the effects varied across grade. These findings suggest that the peer context plays an important role in the development of the perpetration of adolescent dating violence.  相似文献   
982.
This article examines the ‘disappearance of the black population’ by moving beyond the more traditional explanation of the blanqueamiento (whitening) movement at the end of the nineteenth century. In shifting the temporal framework to the republican period, 1820–1853, a more colorful explanation arises to address how the black population was first lightened which would lead to it being whitened during the second half of the nineteenth century. Ultimately because of mestizaje (racial mixture), blacks and other castas (a person who was not a Spaniard and often of a mixed racial heritage) became pardos. Pardos at first included those of mixed heritage with an elite status among other castas in the colonial period. As Córdoba joined the nation-building process, pardo encompassed all people of color, especially the growing, free black population. In order to explain this process, I traced African descendants who were originally labeled negro and changed to pardo in the 1813, 1822, and 1832 city censuses  相似文献   
983.
984.
985.
986.
987.
988.
This article examines the preliminary findings of an oral history project on women's working lives in three Irish counties in the period 1936-1960. By employing a feminist analysis of the narratives, the authors endeavour to investigate the extent to which the reality of married women's working lives corresponded with the rhetoric of Irish womanhood generated by political and religious discourses of the day. The analysis reveals that while the women did accept the home-based motherhood role prescribed for them, in many cases financial necessity dictated that they combine this role with that of part-time and in some cases, full-time participation in the labour market.  相似文献   
989.
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