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   365篇
  免费   7篇
教育   268篇
科学研究   21篇
各国文化   5篇
体育   40篇
文化理论   6篇
信息传播   32篇
  2024年   2篇
  2023年   2篇
  2022年   7篇
  2021年   10篇
  2020年   11篇
  2019年   21篇
  2018年   21篇
  2017年   23篇
  2016年   24篇
  2015年   13篇
  2014年   14篇
  2013年   66篇
  2012年   14篇
  2011年   10篇
  2010年   10篇
  2009年   11篇
  2008年   12篇
  2007年   7篇
  2006年   4篇
  2005年   7篇
  2004年   4篇
  2003年   4篇
  2002年   6篇
  2001年   7篇
  2000年   3篇
  1999年   2篇
  1998年   8篇
  1997年   2篇
  1996年   2篇
  1994年   3篇
  1992年   4篇
  1991年   2篇
  1990年   2篇
  1989年   2篇
  1983年   1篇
  1982年   4篇
  1981年   2篇
  1980年   3篇
  1979年   1篇
  1977年   1篇
  1976年   1篇
  1975年   1篇
  1974年   1篇
  1969年   2篇
  1968年   1篇
  1967年   1篇
  1966年   1篇
  1964年   1篇
  1917年   3篇
  1890年   1篇
排序方式: 共有372条查询结果,搜索用时 15 毫秒
361.
362.
Prospective associations over a 5-year period were examined among perceived parent, closest friend, and popular peer injunctive norms and the onset and frequency of adolescent substance use within a diverse (53% female, 45.5% White non-Hispanic, 22.3% Hispanic, 21.5% Black, 1% Asian, and 6.4% another race) sample of 868 seventh- and eighth-grade adolescents from 2012 to 2017. Analyses revealed adolescents' substance use norms were more lenient than perceptions of their parents' and stricter than perceptions of their closest friends'. Stricter perceptions of parent and closest friend norms, but not popular peer norms, were significantly associated with a later onset of alcohol, marijuana, and cigarette use, and the magnitude of the effect of each source' on later substance use varied across development.  相似文献   
363.
Educational technology research and development - Understanding theory is essential to instructional design (ID) research and practice; however, novice designers struggle to make sense of...  相似文献   
364.
365.
Abstract

Researchers and clinicians have suggested that overuse injuries to the lower back and lower extremities of figure skaters may be associated with the repeated high impact forces sustained during jump landings. Our primary aim was to compare the vertical ground reaction forces (GRFs) in freestyle figure skaters (n = 26) and non-skaters (n = 18) for the same barefoot single leg landing on a force plate from a 20 cm platform. Compared with non-skaters, skaters exhibited a significantly greater normalised peak GRF (3.50 ± 0.47 × body weight for skaters vs. 3.13 ± 0.45 × body weight for non-skaters), significantly shorter time to peak GRF (81.21 ± 14.01 ms for skaters vs. 93.81 ± 16.49 ms for non-skaters), and significantly longer time to stabilisation (TTS) of the GRF (2.38 ± 0.07 s for skaters vs. 2.22 ± 0.07 s for non-skaters). Skaters also confined their centre of pressure (CoP) to a significantly smaller mediolateral (M–L) (25%) and anterior–posterior (A–P) (40%) range during the landing phase, with the position of the CoP located in the mid to forefoot region. The narrower and more forward position of the CoP in skaters may at least partially explain the greater peak GRF, shorter time to peak, and longer TTS. Training and/or equipment modification serve as potential targets to decrease peak GRF by distributing it over a longer time period. More comprehensive studies including electromyography and motion capture are needed to fully characterise the unique figure skater landing strategy.  相似文献   
366.
Decades of student persistence and retention literature has brought to light factors of social, academic, and religious fit that influence a student's decision to remain at or depart from an institution. At Christian institutions, increasing student pluralism raises the likelihood that students will not fit religiously. This qualitative study of 21 first-time, full-time students contributes to the existing literature by exploring how students who already feel they do not fit for religious reasons work at constructing a sense of fit at a Christian research university. Many participants coped with religious discontinuity by redefining specifically Christian practices and teachings in terms that were personally palatable: as either general moral lessons that would help them to be a better person or as cultural insights that would benefit them social and professionally in the future. In many cases, university staff were instrumental. Finally, participants worked to construct an acceptable level of fit, or fit threshold, through various combinations of social fit, academic fit, and religious fit, often compensating for one with others. As Christian institutions increasingly invite students from diverse religious backgrounds into their campus community, understanding ways that these students attempt to adapt to religious incongruence will be paramount.  相似文献   
367.
368.
369.
ABSTRACT

Students must be taught to understand the ethical issues associated with engineering and technology, which includes microethics and macroethics. This research examined the influence of cultural environment by comparing ethics-related education outcomes between educators in (1) the United States, (2) non-US Anglo, and (3) Western European countries who teach engineering students. In an increasingly globalised world where companies and projects draw from talent across countries, it is important to understand how different cultures educate future engineers about their ethical responsibilities. Survey results revealed that a majority of educators in all three groups viewed undergraduate and postgraduate education on ethics as insufficient. A higher percentage of non-US Anglo and Western European educators taught sustainability and environmental issues in their courses compared to US respondents. US educators taught codes of ethics, ethics in design, and safety more than those in Western Europe. Open-ended responses illuminated challenges and opportunities to improve ethics education.  相似文献   
370.
Nathan Bossoh 《Endeavour》2021,45(1-2):100753
In 1866 the Aëronautical Society of Great Britain was founded with George Douglas Campbell, 8th Duke of Argyll (1823–1900) as first president, and patron. The purpose of the society was to further the study of aerial navigation as well as to make aeronautics a respectable science, and today the society--now the Royal Aeronautical Society--serves as a professional body dedicated to aerospace research. There were two fundamental areas of scientific knowledge key to the society in its initial decades: 1) a detailed understanding of the principles of bird flight, and 2) the practical application of that knowledge in the construction of flying machines. Argyll firmly belonged to the former being a well-seasoned ornithologist and theorist of flight, and, with the publication of his best-selling book The Reign of Law (1867), was one of the first to popularise the theoretical principles of bird flight. In this paper, I examine the relationship between bird and mechanical flight through Argyll's ornithological studies, with a focus on the various factors early in Argyll's life that led to his eventual position as president of the Aëronautical Society. By analysing the influence of his family relations, home environment and religious convictions, I show how Argyll’s scientific undertakings existed as part of a wider network of theistic Victorian aristocrats who contributed to the creation and professionalization of scientific disciplines in a way that contrasted markedly with the methods of many of the scientific naturalists.  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