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   311篇
  免费   3篇
各国政治   12篇
工人农民   13篇
世界政治   32篇
外交国际关系   23篇
法律   128篇
中国政治   1篇
政治理论   104篇
综合类   1篇
  2023年   1篇
  2022年   1篇
  2021年   1篇
  2020年   5篇
  2019年   9篇
  2018年   5篇
  2017年   6篇
  2016年   9篇
  2015年   6篇
  2014年   5篇
  2013年   50篇
  2012年   5篇
  2011年   9篇
  2010年   10篇
  2009年   18篇
  2008年   15篇
  2007年   8篇
  2006年   13篇
  2005年   7篇
  2004年   11篇
  2003年   7篇
  2002年   7篇
  2001年   4篇
  2000年   5篇
  1999年   6篇
  1998年   5篇
  1996年   5篇
  1995年   7篇
  1994年   5篇
  1993年   2篇
  1992年   4篇
  1991年   8篇
  1990年   2篇
  1989年   5篇
  1988年   4篇
  1987年   6篇
  1986年   6篇
  1985年   4篇
  1984年   3篇
  1983年   3篇
  1982年   2篇
  1981年   5篇
  1980年   4篇
  1978年   2篇
  1976年   4篇
  1973年   3篇
  1968年   1篇
  1967年   1篇
排序方式: 共有314条查询结果,搜索用时 0 毫秒
311.
Although the secret ballot has been secured as a legal matter in the United States, formal secrecy protections are not equivalent to convincing citizens that they may vote privately and without fear of reprisal. We present survey evidence that those who have not previously voted are particularly likely to voice doubts about the secrecy of the voting process. We then report results from a field experiment where we mailed information about protections of ballot secrecy to registered voters prior to the 2010 general election. Consistent with our survey data, we find that these letters increased turnout for registered citizens without records of previous turnout, but they did not appear to influence the behavior of citizens who had previously voted. The increase in turnout of more than three percentage points (20%) for those without previous records of voting is notably larger than the effect of a standard get‐out‐the‐vote mailing for this group. Overall, these results suggest that although the secret ballot is a long‐standing institution in the United States, beliefs about this institution may not match the legal reality.  相似文献   
312.
This article examines the current crisis in Guatemala as a case study in the phenomenon of “criminal insurgency” in Latin America. Since the close of Guatemala's civil war in 1996, crime—especially violent crime—has increased dramatically, to the point that drug traffickers, organized crime syndicates, and youth gangs are effectively waging a form of irregular warfare against the state. The police, the judiciary, and entire local and departmental governments are rife with criminal infiltrators; murder statistics have surpassed civil-war levels in recent years; criminal operatives assassinate government officials and troublesome members of the political class; and chunks of territory are now effectively under the control of criminal groups. All this has led to growing civic disillusion and eroded the authority and legitimacy of the government. Rampant crime is causing a crisis of the democratic state.  相似文献   
313.
In 2007, WHO/UNAIDS recommended male circumcision as an HIV-preventive measure based on three sub-Saharan African randomised clinical trials (RCTs) into female-to-male sexual transmission. A related RCT investigated male-to-female transmission. However, the trials were compromised by inadequate equipoise; selection bias; inadequate blinding; problematic randomisation; trials stopped early with exaggerated treatment effects; and not investigating non-sexual transmission. Several questions remain unanswered. Why were the trials carried out in countries where more intact men were HIV-positive than in those where more circumcised men were HIV-positive? Why were men sampled from specific ethnic subgroups? Why were so many participants lost to follow-up? Why did men in the male circumcision groups receive additional counselling on safe sex practices? While the absolute reduction in HIV transmission associated with male circumcision across the three female-to-male trials was only about 1.3%, relative reduction was reported as 60%, but, after correction for lead-time bias, averaged 49%. In the Kenyan trial, male circumcision appears to have been associated with four new incident infections. In the Ugandan male-to-female trial, there appears to have been a 61% relative increase in HIV infection among female partners of HIV-positive circumcised men. Since male circumcision diverts resources from known preventive measures and increases risk-taking behaviours, any long-term benefit in reducing HIV transmission remains uncertain.  相似文献   
314.
This study aimed to describe the perceived barriers faced by emergency clinicians in utilising mental health legislation in Australian hospital emergency departments. A semi-structured interview methodology was used to assess what barriers emergency department doctors and nurses perceive in the operation of mental health legislation. Key findings from the interview data were drawn in accordance with the most commonly represented themes. A total of 36 interviews were conducted with 20 members of the Australasian College for Emergency Medicine and 16 members of the College for Emergency Nursing Australasia representing the various Australian jurisdictions. Most concerning to clinicians were the effects of access block and overcrowding on the appropriate use of mental health legislation, and the substandard medical care that mental health patients received as a result of long periods in the emergency department. Many respondents were concerned about the lack of applicability of mental health legislation to the emergency department environment, variation in legislation between States and Territories causing problems for clinicians working interstate, and a lack of knowledge and training in mental health legislation. Many felt that clarification of legislative issues around duty of care and intoxicated or violent patients was required. The authors conclude that access block has detrimental effects on emergency mental health care as it does in other areas of emergency medicine. Consideration should be given to uniform national mental health legislation to better serve the needs of people with mental health emergencies.  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