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   2646篇
  免费   75篇
  国内免费   3篇
教育   2055篇
科学研究   75篇
各国文化   73篇
体育   150篇
文化理论   20篇
信息传播   351篇
  2023年   30篇
  2022年   31篇
  2021年   61篇
  2020年   88篇
  2019年   129篇
  2018年   185篇
  2017年   190篇
  2016年   163篇
  2015年   101篇
  2014年   125篇
  2013年   557篇
  2012年   92篇
  2011年   71篇
  2010年   50篇
  2009年   71篇
  2008年   78篇
  2007年   63篇
  2006年   51篇
  2005年   59篇
  2004年   64篇
  2003年   46篇
  2002年   32篇
  2001年   22篇
  2000年   28篇
  1999年   30篇
  1998年   15篇
  1997年   15篇
  1996年   19篇
  1995年   24篇
  1994年   7篇
  1993年   13篇
  1992年   7篇
  1991年   11篇
  1990年   11篇
  1989年   8篇
  1988年   11篇
  1987年   5篇
  1986年   11篇
  1985年   9篇
  1984年   5篇
  1983年   10篇
  1982年   5篇
  1981年   7篇
  1980年   9篇
  1979年   6篇
  1978年   14篇
  1977年   6篇
  1975年   9篇
  1973年   5篇
  1943年   5篇
排序方式: 共有2724条查询结果,搜索用时 31 毫秒
101.
102.
103.
104.
105.
‘It's important that we remember the past is not just dry facts and statistics but also the detailed lives of real people. SAPPHIRE aims to give a voice to these lives.’ The Scottish Archive of Print and Publishing History Records (SAPPHIRE), an initiative with Napier University as lead and Queen Margaret University College as main collaborative partner, is an oral history project which aims to record the social, economic and cultural heritage of the Scottish printing and publishing industry in the 20th century. Undertaken in partnership with a number of Scottish organizations, its results are providing a better understanding of an important and overlooked part of Scotland's heritage. Outcomes of the project include a permanent oral history archive stored at the Edward Clark Collection at Napier University, and exhibitions and publications on the history of the printing and publishing industry. The development and current activities of SAPPHIRE are described and reviewed.  相似文献   
106.
For activities such as squash, badminton and fencing, the ability to quickly complete a lunge and return to the start or move off in another direction is critical for success. Determining which strength qualities are important predictors of lunge performance was the focus of this study. Thirty-one male athletes performed: (1) a unilateral maximal squat (one-repetition maximum, 1-RM) and unilateral jump squat (50% 1-RM) on an instrumented supine squat machine, and (2) a forward lunge while attached to a linear transducer. We performed stepwise multiple regression analysis with lunge performance as the dependent variable and various strength, flexibility and anthropometric measures as the independent variables. From the many strength and power measures calculated, time to peak force was the best single predictor of lunge performance, which accounted for 55% of the explained variance. The best three-variable model for predicting lunge performance accounted for 76-85% of the explained variance. The models differed, however, according to whether lunge performance was expressed relative to body mass (time to peak force, mean power and relative strength = 76%) or taken as an absolute value (time to peak force, leg length and flexibility = 85%). We conclude that one to two trials were reliable for strength diagnosis and that one strength measure cannot accurately explain functional performance because other factors, such as body mass, flexibility and leg length, have diverse effects on the statistical models.  相似文献   
107.
In June 2000, the Biomedical Library at the University of South Alabama introduced Prospero, an electronic desktop document delivery service. From June 2000 to November 2002, Prospero delivered 28% of interlibrary loan requests and 72% of document delivery requests. In November 2002, the library conducted a user satisfaction survey of the Prospero service. Forty-two surveys were used. Fifteen responses were received from affiliated faculty, staff, and students, who generally expressed satisfaction with the service. Twenty-seven responses were received from unaffiliated users, comprised of medical libraries, individual users, and businesses. Based on the survey results, the library deemed the Prospero service a success. To better support users, the library's Web page was updated to include hardware and software requirements for successful use of the Prospero service, as well as screen shots of the Prospero process.  相似文献   
108.
There is little research on students' engagement in physical activity in middle school physical education (PE). We observed student activity, lesson context, and teacher behavior in 430 PE lessons taught by 126 teachers in 24 schools. Variables were analyzed by mixed-model nested analyses of covariance. Boys were more active than girls overall and during skill drills, game play, and free play. Student activity varied by lesson context, with fitness activities producing the most activity. Class size was negatively associated with student activity. Daily PE contributed a weekly total of 25 min of vigorous activity and 83 min of moderate-to-vigorous activity--much less than national objectives. Results suggest that numerous opportunities exist for increasing student physical activity during middle school PE.  相似文献   
109.
110.
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