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   72178篇
  免费   981篇
  国内免费   1529篇
教育   45145篇
科学研究   4903篇
各国文化   83篇
体育   13905篇
综合类   7891篇
文化理论   36篇
信息传播   2725篇
  2024年   14篇
  2023年   104篇
  2022年   435篇
  2021年   901篇
  2020年   1208篇
  2019年   745篇
  2018年   638篇
  2017年   702篇
  2016年   854篇
  2015年   1469篇
  2014年   3637篇
  2013年   4405篇
  2012年   4898篇
  2011年   5488篇
  2010年   4264篇
  2009年   3913篇
  2008年   4533篇
  2007年   5909篇
  2006年   5768篇
  2005年   5281篇
  2004年   4803篇
  2003年   4103篇
  2002年   3418篇
  2001年   2877篇
  2000年   1750篇
  1999年   822篇
  1998年   479篇
  1997年   408篇
  1996年   302篇
  1995年   161篇
  1994年   119篇
  1993年   106篇
  1992年   63篇
  1991年   35篇
  1990年   28篇
  1989年   18篇
  1988年   7篇
  1984年   1篇
  1983年   3篇
  1981年   3篇
  1980年   1篇
  1979年   5篇
  1978年   3篇
  1977年   2篇
  1976年   4篇
  1957年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
本文介绍了美国院校认证之后如何对院校进行相应的整改工作以保证院校的不断改进与提高,同时对中国高等院校里所进行的本科教学工作水平评估中院校有关整改工作进行一些思考。  相似文献   
942.
在科技迅速发展的21世纪,英语作为一种在信息交流方面广泛运用的语言工具,越来越受到人们的重视。学习者都期盼有一种速成法在短时间内能将英语水平有大幅度的提高。学语言应该找到感觉,也就是说,要培养语感。  相似文献   
943.
幼儿英语教学法已经成为学前教育新兴的一门专业课程,幼儿英语教学法课程改革是一项具有创新意义的课题。改革后的课程在授课模式上讲求理论与实践的紧密结合,在授课内容上强调与语言课程的分离,其基本特征为平等对话、角色变换、园园合作、共同创造。  相似文献   
944.
20世纪是科学社会主义在全世界取得突破、形成阵营、遭遇曲折、艰难奋起的世纪。在这一世纪里,世界社会主义运动一直面临着三个世纪性难题:“什么是马克思主义、怎样坚持和发展马克思主义”,“什么是社会主义、怎样建设社会主义”,“建设什么样的党、怎样建设党”。邓小平对马克思主义中国化的重大贡献就在于他从中国面临的国情世情出发,从总结历史经验、实现思想路线上的拨乱反正入手,进行全面改革,破解了这些难题,创立了中国特色社会主义的初步形态,坚持、继承并发展了马克思主义、社会主义,成了在当代中国发展的新阶段。  相似文献   
945.
词汇语义探讨   总被引:1,自引:0,他引:1  
语义问题是词汇研究的重心。本从词定义的模糊性、词的语义单位及单个词内的语义之间的关系及组织等三方面着手对词汇语义问题进行了探讨。  相似文献   
946.
以计算机、通讯和信息技术为支撑的网络的快速发展,对当今社会的影响深远,也使高校爱国主义教育面临机遇与挑战.高校应当根据网络的特点,因势利导,趋利弊害,采取相应的对策充实爱国主义教育的内容,改进教学方式和教学手段,提高爱国主义教育的成效.  相似文献   
947.
苏轼的《江城子·十年生死两茫茫》和贺铸的《鹧鸪天·重过闯门万事非》是北宋时期两首著名的悼亡词。本文对这两首悼亡词的情感内容、艺术构思、表现手法等进行了同异比较探析,并从人生经历和艺术禀赋方面揭示了其成因。  相似文献   
948.
This study investigated the acute endocrine responses to a 164-km road cycling event in a hot environment. Thirty-four male experienced cyclists (49.1 ± 8.3 years, 86.8 ± 12.5 kg, 178.1 ± 5.1 cm) participating in a 164-km road cycling event were recruited. Blood samples were collected within 0.3–2.0 h before the start (PRE: ~0500–0700 h) and immediately following the ride (POST). Samples were analysed for testosterone, growth hormone (GH), cortisol and interleukin-6 (IL-6). The temperature and humidity during the event were 35.3 ± 4.9°C and 47.2 ± 14.0%, respectively. Based on the finishing time, results for the fastest (FAST, 305 ± 10 min) and the slowest (SLOW, 467 ± 31 min) quartiles were compared. At POST, testosterone concentration was significantly (P < 0.05) lower (PRE, 20.8 ± 8.6; POST, 18.2 ± 6.7 nmol · L?1), while GH (PRE, 0.3 ± 0.1; POST, 2.3 ± 0.3 µg · L?1), cortisol (PRE, 661 ± 165; POST, 1073 ± 260 nmol · L?1) and IL-6 (PRE, 4.0 ± 3.4; POST, 22.4 ± 15.2 pg · mL?1) concentrations were significantly higher than those at PRE. At POST, GH and cortisol were significantly higher for the FAST group than for the SLOW group (GH, 3.6 ± 2.0 and 1.0 ± 0.8 µg · L?1; cortisol, 1187 ± 209 and 867 ± 215 nmol · L?1). Participation in an ultra-endurance road cycling event in a hot environment induced significant acute changes in concentrations of circulating hormones, with a greater augmentation of GH and cortisol in those completing the ride fastest.  相似文献   
949.
Fitness is an important component of health, and obese adolescents regularly have poor fitness. Unfortunately, few have assessed the impact of community-based lifestyle interventions on multiple components of fitness. The purpose of this study was to assess the impact of participation in a community-based intervention involving adolescents and parents on multiple components of fitness of obese adolescents. In a within-subject, waitlist controlled clinical trial with 12 months follow-up in Western Australia, participants (n = 56) completed multiple fitness measures at baseline, immediately prior to beginning an 8-week intervention and at 3, 6 and 12 months during a maintenance period. Performance on the shuttle walk was improved immediately post-intervention (increase of 42.8 m, 95% CI: 7.5, 78.2) and at 12 months post-intervention (increase of 44.6 m, 95% CI: 1.3, 87.8) compared with pre-intervention. Muscle performance of quadriceps and deltoids were improved post-intervention (increase of 1.1 (95% CI: 0.1, 2.1) kg · F and 1.0 (0.02, 2.1) kg · F, respectively) and all muscle performance measures were improved at 12 months following the intervention. There were no changes in waist circumference. A community-based lifestyle programme such as Curtin University’s Activity, Food and Attitudes Program (CAFAP) may be a viable strategy for improving fitness in overweight adolescents.  相似文献   
950.
The purpose of this study was to examine the mediating effect of resistance training skill competency on percentage of body fat, muscular fitness and physical activity among a sample of adolescent boys participating in a school-based obesity prevention intervention. Participants were 361 adolescent boys taking part in the Active Teen Leaders Avoiding Screen-time (ATLAS) cluster randomised controlled trial: a school-based program targeting the health behaviours of economically disadvantaged adolescent males considered “at-risk” of obesity. Body fat percentage (bioelectrical impedance), muscular fitness (hand grip dynamometry and push-ups), physical activity (accelerometry) and resistance training skill competency were assessed at baseline and post-intervention (i.e., 8 months). Three separate multi-level mediation models were analysed to investigate the potential mediating effects of resistance training skill competency on each of the study outcomes using a product-of-coefficients test. Analyses followed the intention-to-treat principle. The intervention had a significant impact on the resistance training skill competency of the boys, and improvements in skill competency significantly mediated the effect of the intervention on percentage of body fat and the combined muscular fitness score. No significant mediated effects were found for physical activity. Improving resistance training skill competency may be an effective strategy for achieving improvements in body composition and muscular fitness in adolescent boys.  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