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   508篇
  免费   3篇
教育   334篇
科学研究   79篇
各国文化   4篇
体育   44篇
文化理论   7篇
信息传播   43篇
  2022年   6篇
  2021年   4篇
  2020年   6篇
  2019年   11篇
  2018年   17篇
  2017年   17篇
  2016年   18篇
  2015年   11篇
  2014年   16篇
  2013年   118篇
  2012年   8篇
  2011年   13篇
  2010年   9篇
  2009年   11篇
  2008年   11篇
  2007年   5篇
  2006年   4篇
  2005年   9篇
  2004年   8篇
  2003年   8篇
  2002年   9篇
  2001年   7篇
  2000年   8篇
  1999年   7篇
  1998年   8篇
  1997年   6篇
  1996年   7篇
  1995年   3篇
  1994年   6篇
  1993年   5篇
  1992年   7篇
  1990年   8篇
  1989年   4篇
  1988年   3篇
  1984年   5篇
  1981年   3篇
  1980年   4篇
  1978年   6篇
  1977年   4篇
  1976年   5篇
  1975年   3篇
  1967年   3篇
  1918年   2篇
  1882年   2篇
  1870年   3篇
  1868年   6篇
  1867年   3篇
  1866年   3篇
  1859年   3篇
  1844年   3篇
排序方式: 共有511条查询结果,搜索用时 518 毫秒
1.
2.
This study investigates the perceived impact of election polls,focusing on the hotly contested 2000 U.S. presidential election.Survey data from 558 individuals gathered during the final daysof the election campaign are analyzed to examine beliefs thatthe polls greatly affect other voters, general views of pollsas good or bad for the country, beliefs about whether pollstersinfluence their results to come out a certain way, and supportfor banning election-night projections. Results indicate thatmost respondents felt the polls had no influence on themselveswhile still affecting others. Respondents exhibiting these ‘third-person-effect’perceptions were significantly more likely than others to believethat election polls are a bad thing for the country. Negativeperceptions of polls and beliefs that pollsters try to influenceresults were also related to general distrust of the news media.Negative views of polls in turn were associated with increasedsupport for prohibiting election-night projections. In general,the results illustrate the dependency of negative views aboutpolling on fears of untoward effects on voters, in particularthe fear that polls and election projections might lend supportto candidates opposed by the respondent.  相似文献   
3.
During the nineteenth century, the British Raj launched a campaign to reduce the number of people killed annually by venomous snakes on the Indian subcontinent. Unlike its successful effort to cull large mammals, the colonial government was forced to abolish its bounty scheme in 1890 and instead seek to use sanitation to reduce interactions between humans and snakes. This article will assess this transition in policy as a means to understand how attitudes towards the governance of animals were shaped by cultural and ecological factors. It will be shown that during its inception, discourses of scientific governance statistically augmented perceptions of the threat posed by snakes, presenting them as a direct yet manageable danger within an anthropocentric cultural model. However, financial and practical limitations forced the government to recognise that the behaviour, seasonal patterns and territorial movements of snakes influenced the rate of mortality, and thus adjust its policy to acknowledge the experience of cohabitation in India’s diverse ecological contexts.  相似文献   
4.
The purpose of this study was to compare arm–leg coordination and kinematics during 100 m breaststroke in 26 (8 female; 18 male) specialist breaststroke swimmers. Laps were recorded using three 50-Hz underwater cameras. Heart rate and blood lactate were measured pre- and post-swim. Arm–leg coordination was defined using coordination phases describing continuity between recovery and propulsive phases of upper and lower limbs: coordination phase 1 (time between end of leg kick and start of the arm pull phases); and coordination phase 2 (time between end of arm pull and start of leg kick phases). Duration of stroke phases, coordination phases, swim velocity, stroke length (SL), stroke rate (SR) and stroke index (SI) were analysed during the last three strokes of each lap that were unaffected by turning or finishing. Significant changes in velocity, SI and SL (P < 0.05) were found between laps. Both sexes showed significant increase (P < 0.05) in heart rate and blood lactate pre- to post-swim. Males had significantly (P < 0.01) faster swim velocities resulting from longer SLs (P = 0.016) with no difference in SR (P = 0.064). Sex differences in kinematic parameters can be explained by anthropometric differences providing males with increased propelling efficiency.  相似文献   
5.
This study examined whether perceived message effectiveness (PE) predicted information-seeking behavior in the topical domain of colon cancer. Participants (N = 277) viewed one of three video messages (news, testimonial, and animation) that advocated screening for colon cancer. Information-seeking behavior was operationalized as reading time for a subsequent message about colon cancer. The proposed mediation model successfully reproduced the pattern of data, thereby providing evidence that PE predicts behavior via intention.  相似文献   
6.
7.
8.
9.
10.
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