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   824篇
  免费   15篇
教育   639篇
科学研究   37篇
各国文化   14篇
体育   57篇
综合类   1篇
文化理论   10篇
信息传播   81篇
  2022年   3篇
  2021年   10篇
  2020年   20篇
  2019年   24篇
  2018年   42篇
  2017年   32篇
  2016年   47篇
  2015年   25篇
  2014年   35篇
  2013年   164篇
  2012年   27篇
  2011年   27篇
  2010年   29篇
  2009年   33篇
  2008年   31篇
  2007年   29篇
  2006年   19篇
  2005年   19篇
  2004年   14篇
  2003年   16篇
  2002年   19篇
  2001年   14篇
  2000年   16篇
  1999年   14篇
  1998年   4篇
  1997年   4篇
  1996年   3篇
  1995年   2篇
  1994年   11篇
  1993年   5篇
  1992年   7篇
  1991年   9篇
  1990年   6篇
  1989年   7篇
  1988年   6篇
  1987年   7篇
  1986年   4篇
  1985年   6篇
  1984年   4篇
  1983年   6篇
  1981年   5篇
  1980年   5篇
  1979年   3篇
  1978年   2篇
  1975年   4篇
  1974年   2篇
  1971年   2篇
  1967年   2篇
  1943年   2篇
  1942年   2篇
排序方式: 共有839条查询结果,搜索用时 156 毫秒
21.
Although there is a healthy amount in the literature about the importance of motivating student library employees in an academic setting, very little of it discusses the practical aspects of how to motivate students. A supervisor must often use ideas from other disciplines, including the business world and academia. In this article, the author suggests six highly effective, yet cost-conscious methods that have been used successfully in an academic library setting to keep student employees motivated and to retain them year after year. These six methods are: (a) encouraging autonomy, (b) holding contests, (c) providing food, (d) being open to suggestions, (e) using employee strengths, and (f) celebrating seasonal or university-specific events.  相似文献   
22.
We describe how a team approach that we developed as a mentoring strategy can be used to recruit, advance, and guide students to be more interested in the interdisciplinary field of mathematical biology, and lead to success in undergraduate research in this field. Students are introduced to research in their first semester via lab rotations. Their participation in the research of four faculty members-two from biology and two from mathematics-gives them a first-hand overview of research in quantitative biology and also some initial experience in research itself. However, one of the primary goals of the lab rotation experience is that of developing teams of students and faculty that combine mathematics and statistics with biology and the life sciences, teams that subsequently mentor undergraduate research in genuine interdisciplinary environments. Thus, the team concept serves not only as a means of establishing interdisciplinary research, but also as a means of incorporating new students into existing research efforts that will then track those students into meaningful research of their own. We report how the team concept is used to support undergraduate research in mathematical biology and what types of team-building strategies have worked for us.  相似文献   
23.
Bullying has been the topic of much debate and empirical investigations over the past decade. Contemporary literature contends that students with disabilities may be overrepresented within the bullying dynamic as both perpetrators and victims. Unfortunately, prevalence rates associated with the representation of students with disabilities is limited due to measurement, disability status identification, and definition issues. The present study attempted to address these issues by assessing the prevalence rates of specific subgroups of students with disabilities in a large‐scale cross‐sectional study with 13,325 students without disabilities and 1,183 students with disabilities in Grades 6 through 12. Results suggest that overall, students with disabilities reported proportionally higher rates of bullying, fighting, relational aggression, victimization, online victimization, and relational victimization than did their peers without disabilities. These findings suggest that schools must begin to establish targeted interventions to support skill development based on characteristics associated with specific disability identification.  相似文献   
24.
Many formal policies have suggested that officers need a college degree; however, policies forced little change in practices of American police organizations. Six hundred-fifty patrol officers employed in 12 medium-sized police departments in three Midwestern states were surveyed as to their current educational attainment and job performance. The purpose of this study was to determine the relationship between educational level and police performance.  相似文献   
25.
International Journal for the Advancement of Counselling - This article features strengths and challenges indicated by foreign-born counselor educators in programs accredited by the Council for...  相似文献   
26.
The swing speed of the bat is one of the most important factors affecting the hit-ball speed. Most field studies tend to focus on measuring ball speed, which is easier to measure and quantify than bat speed. For this reason, relatively little data exist describing bat motion in field conditions. The following describes a relatively large swing speed field study involving bats of the same model with nearly constant weight and varying inertia. The study was conducted using right-handed batters on a regulation outdoor field with a live pitcher. Swing speed was measured by tracking markers on the bat with two high-speed video cameras so that the bat markers could be traced in three-dimensional space. The ball motion was tracked using the same high-speed video cameras and a three-dimensional Doppler radar system. Bat swing speed was observed to be proportional to the batter skill level and the normalised swing speed increased with decreasing bat inertia. The bat centre of rotation during impact was close to the knob of the bat. The bats were tested under controlled laboratory conditions using a standardised performance test. The field and laboratory results showed good agreement including the hit-ball speed and the subtle effect of bat inertia on the maximum performance location. The vibrational response of the bats was considered using modal analysis. The maximum performance location was correlated with the node of the first vibrational mode.  相似文献   
27.
28.
29.
30.
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