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   9258篇
  免费   311篇
各国政治   627篇
工人农民   382篇
世界政治   732篇
外交国际关系   397篇
法律   5320篇
中国共产党   2篇
中国政治   140篇
政治理论   1879篇
综合类   90篇
  2020年   121篇
  2019年   140篇
  2018年   202篇
  2017年   226篇
  2016年   235篇
  2015年   195篇
  2014年   204篇
  2013年   1151篇
  2012年   239篇
  2011年   321篇
  2010年   233篇
  2009年   249篇
  2008年   256篇
  2007年   234篇
  2006年   233篇
  2005年   207篇
  2004年   229篇
  2003年   243篇
  2002年   168篇
  2001年   359篇
  2000年   335篇
  1999年   297篇
  1998年   145篇
  1997年   103篇
  1996年   113篇
  1995年   103篇
  1994年   111篇
  1993年   105篇
  1992年   163篇
  1991年   159篇
  1990年   148篇
  1989年   138篇
  1988年   160篇
  1987年   159篇
  1986年   162篇
  1985年   149篇
  1984年   145篇
  1983年   157篇
  1982年   92篇
  1981年   68篇
  1980年   80篇
  1979年   99篇
  1978年   79篇
  1977年   66篇
  1976年   71篇
  1975年   60篇
  1973年   51篇
  1972年   53篇
  1971年   54篇
  1969年   54篇
排序方式: 共有9569条查询结果,搜索用时 15 毫秒
951.
We show that Brazilian voters strongly sanction malfeasant mayors when presented with hypothetical scenarios but take no action when given the same information about their own mayor. Partnering with the State Accounts Court of Pernambuco, we conducted a field experiment during the 2016 municipal elections in which the treatment group received information about official wrongdoing by their mayor. The treatment has no effect on self‐reported voting behavior after the election, yet when informing about malfeasance in the context of a vignette experiment, we are able to replicate the strong negative effect found in prior studies. We argue that voters' behavior in the abstract reflects the comparatively strong norm against corruption in Brazil. Yet on Election Day, their behavior is constrained by factors such as attitudes toward local political dynasties and the greater salience of more pressing concerns like employment and health services.  相似文献   
952.
Political Behavior - Much of the gender gap literature focuses on women’s greater average liberalism relative to men. This approach masks considerable heterogeneity in political identity and...  相似文献   
953.
We evaluate the cost‐effectiveness of two early childhood interventions that use instructional coaching and parent coaching as levers for improvement. The study design allows us to compare the individual effects of each intervention as well as their combined effect on student outcomes. We find that teachers receiving instructional coaching improve their use of evidence‐based instructional practices, while families receiving parent coaching show increases in numerous responsive parenting behaviors associated with positive child outcomes. Both interventions demonstrate positive impacts on students, but only parent coaching shows statistically significant effects across a range of student outcomes. Instructional coaching alone is substantially less costly and may therefore be the most cost‐effective of the three treatment conditions; however, small sample sizes limit our ability to reach definitive conclusions. Policy simulations suggest that implementing these interventions could raise the overall cost‐effectiveness of Head Start by at least 16 percent.  相似文献   
954.
Over the past decade, directional drilling and hydraulic fracturing enabled an unconventional oil and gas extraction (UOGE) boom in many regions of the United States, including parts of Pennsylvania. This revolution has created serious concerns about the capability of existing institutions to govern important societal outcomes associated with UOGE. We present a conceptual framework for assessing key societal outcomes influenced by UOGE governance. In applying this framework to Pennsylvania, we discern certain institutional strengths that have allowed the Commonwealth to reap appreciable short‐term economic growth from rich resource endowments. We also find, however, that several institutional weaknesses have allowed costs externalized to the environment, public health, and community integrity to offset some proportion of those economic benefits. Likewise, we find that governance of UOGE in Pennsylvania has contributed to a bifurcated sociopolitical landscape wherein adversarial coalitions dispute the legitimacy of the industry and its governance.  相似文献   
955.
Journal of Youth and Adolescence - Despite the centrality of dating relationships for teens, it is unclear whether the influence of romantic partners’ alcohol use on adolescents’...  相似文献   
956.
Journal of Youth and Adolescence - Although most adolescents are healthy, epidemiological studies show that a significant number experience mental health challenges, and that Indigenous and ethnic...  相似文献   
957.
We use a natural experiment to study how the announcement of the UK COVID-19 lockdown affected citizens' attitudes towards the pandemic and the government's response to it. On the day of the lockdown announcement, YouGov ran a survey that captured responses before and after the announcement. Comparison of these responses suggests that the lockdown announcement made people more supportive of the government's response to the crisis but also (perhaps surprisingly) more concerned about the pandemic. Analysis of heterogeneous treatment effects suggests that the announcement narrowed gaps in perceptions of the crisis, increasing support for the government's response especially among those who had been least supportive and increasing concern about the pandemic especially among those who had been least concerned. Overall, the findings highlight a tension inherent in governing during times of crisis: actions that increase people's confidence in government and induce compliance with government directives may also tend to increase anxiety among the population.  相似文献   
958.
959.
The 11 September attacks cannot be understood fully without an understanding of the ideas of Sayyid Qutb, who is widely acknowledged as the intellectual godfather for the various modern radical Islamic movements, including Al-Qaeda. Qutb's writings are important because they define the core elements that have been adopted by all radical Islamic movements. These include: (1) an extreme hostility toward Western culture, especially the role of women and sexual mores in the West; (2) the formation of society under the rule of Sharia, Islamic law; (3) the overthrow of governments not under the rule of Sharia by means of holy war; and (4) an intense hatred of Jews and distrust of Christians. This article also illustrates Qutb's influence on radical Islamic groups.  相似文献   
960.
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