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   139667篇
  免费   2336篇
  国内免费   941篇
教育   95156篇
科学研究   17310篇
各国文化   2025篇
体育   10915篇
综合类   1923篇
文化理论   1097篇
信息传播   14518篇
  2022年   735篇
  2021年   1509篇
  2020年   2083篇
  2019年   2860篇
  2018年   3167篇
  2017年   3531篇
  2016年   3578篇
  2015年   3160篇
  2014年   4607篇
  2013年   28779篇
  2012年   4182篇
  2011年   4628篇
  2010年   4296篇
  2009年   4449篇
  2008年   4235篇
  2007年   3913篇
  2006年   3978篇
  2005年   3661篇
  2004年   3843篇
  2003年   3076篇
  2002年   2859篇
  2001年   2568篇
  2000年   1912篇
  1999年   1653篇
  1998年   1543篇
  1997年   1574篇
  1996年   1751篇
  1995年   1492篇
  1994年   1486篇
  1993年   1481篇
  1992年   1431篇
  1991年   1248篇
  1990年   1219篇
  1989年   1090篇
  1988年   975篇
  1987年   902篇
  1986年   929篇
  1985年   1170篇
  1984年   1094篇
  1983年   1030篇
  1982年   1050篇
  1981年   983篇
  1980年   945篇
  1979年   998篇
  1978年   1007篇
  1977年   936篇
  1976年   836篇
  1975年   672篇
  1974年   662篇
  1973年   638篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
This article arises from a four week study of a class of 14‐15 year old students. The study explored students’ perception of themselves as writers and the effects of a variety of teaching and learning strategies on their creative writing responses. The aim of the project was to enhance the students’ creative writing, whilst ascertaining whether there were particular activities or types of writing that would lead to students perceiving more satisfactory outcomes in their writing. It answers the research question: What do I observe, and what do my students say, about the experience of different classroom based creative writing tasks?  相似文献   
982.
The present study aimed to investigate pre-sleep behaviours (including evening electronic device use) and sleep quantity in well-trained athletes. Seventy well-trained athletes (44 females, 26 males) aged 21 ± 4 y from a range of team and individual sports were asked to complete an online sleep diary for 7 days. The sleep diary included questions about pre-sleep behaviours (e.g. napping, caffeine intake), electronic device use in the 2 h prior to bedtime (e.g. type of device and duration of use) and sleep (e.g. time in bed, sleep onset latency). On average, athletes spent 8:20 ± 1:21 h in bed each night. Associations between age, time in bed and sleepiness suggested that younger athletes spent more time in bed (= -0.05, p = 0.001) but felt sleepier (r = -0.32, p < 0.01) than older athletes. On average, athletes mostly used electronic devices for 0–30 min prior to sleep. The use of multiple devices in the evening was associated with more perceived difficulty in falling asleep (= 0.22, p = 0.03), but no associations existed with other sleep variables. In summary, younger athletes may require later start times or improved sleep quality to resolve excessive sleepiness.  相似文献   
983.
984.
Self‐efficacy is a universal construct, but few validated measures exist for researchers in developing countries to use in assessing youths’ perceptions of their ability to achieve academic success. This study examined the cross‐cultural suitability and psychometric properties of an academic self‐efficacy scale (ASES) adapted for the Ghanaian context. ASES construct validity was assessed with a sample of 4,289 Ghanaian junior high‐school students and exploratory and confirmatory factor analysis. Invariance testing assessed the scale's measurement equivalence by gender and temporal stability of gender equivalence. The ASES is a valid, reliable one‐dimensional scale for assessing young Ghanaians’ perceptions of their academic capabilities, and it works equally well across genders. As adapted, ASES is a valid scale with utility for researchers examining predictors and effects of academic self‐efficacy. The ASES has important implications for decisions regarding investment in programs aimed at improving academic self‐efficacy of youth, both in sub‐Saharan Africa and the increasingly diverse American public schools.  相似文献   
985.
986.
987.
988.
989.
990.
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