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   777篇
  免费   19篇
教育   612篇
科学研究   37篇
各国文化   22篇
体育   39篇
综合类   1篇
文化理论   8篇
信息传播   77篇
  2022年   4篇
  2021年   8篇
  2020年   17篇
  2019年   22篇
  2018年   20篇
  2017年   24篇
  2016年   20篇
  2015年   19篇
  2014年   29篇
  2013年   178篇
  2012年   21篇
  2011年   20篇
  2010年   14篇
  2009年   18篇
  2008年   18篇
  2007年   15篇
  2006年   19篇
  2005年   21篇
  2004年   17篇
  2003年   13篇
  2002年   20篇
  2001年   7篇
  1999年   9篇
  1998年   5篇
  1997年   7篇
  1996年   9篇
  1995年   13篇
  1994年   4篇
  1993年   11篇
  1992年   7篇
  1991年   10篇
  1990年   10篇
  1989年   16篇
  1988年   17篇
  1987年   7篇
  1986年   7篇
  1985年   9篇
  1984年   11篇
  1983年   5篇
  1982年   8篇
  1981年   8篇
  1980年   11篇
  1979年   6篇
  1978年   12篇
  1977年   7篇
  1976年   8篇
  1975年   6篇
  1974年   7篇
  1973年   3篇
  1967年   3篇
排序方式: 共有796条查询结果,搜索用时 8 毫秒
31.
32.
The profile of a student with learning difficulties is described and also the learning context in 2017. Previous models of provision are then described in terms of their aetiology with discussion of strengths and shortcomings. Some influential features of curriculum planning and delivery are identified. A model of provision involving specific literacy teaching and differentiation is advocated.  相似文献   
33.
Carbohydrate ingestion before and during endurance exercise delays the onset of fatigue (reduced power output). Therefore, endurance athletes are recommended to ingest diets high in carbohydrate (70% of total energy) during competition and training. However, increasing the availability of plasma free fatty acids has been shown to slow the rate of muscle and liver glycogen depletion by promoting the utilization of fat. Ingested fat, in the form of long-chain (C 16-22 ) triacylglycerols, is largely unavailable during acute exercise, but medium-chain (C 8-10 ) triacylglycerols are rapidly absorbed and oxidized. We have shown that the ingestion of medium-chain triacylglycerols in combination with carbohydrate spares muscle carbohydrate stores during 2 h of submaximal (< 70% VO 2 peak) cycling exercise, and improves 40 km time-trial performance. These data suggest that by combining carbohydrate and medium-chain triacylglycerols as a pre-exercise supplement and as a nutritional supplement during exercise, fat oxidation will be enhanced, and endogenous carbohydrate will be spared. We have also examined the chronic metabolic adaptations and effects on substrate utilization and endurance performance when athletes ingest a diet that is high in fat (> 70% by energy). Dietary fat adaptation for a period of at least 2-4 weeks has resulted in a nearly two-fold increase in resistance to fatigue during prolonged, low- to moderate-intensity cycling (< 70% VO 2 peak). Moreover, preliminary studies suggest that mean cycling 20 km time-trial performance following prolonged submaximal exercise is enhanced by 80 s after dietary fat adaptation and 3 days of carbohydrate loading. Thus the relative contribution of fuel substrate to prolonged endurance activity may be modified by training, pre-exercise feeding, habitual diet, or by artificially altering the hormonal milieu or the availability of circulating fuels. The time course and dose-response of these effects on maximizing the oxidative contribution of fat for exercise metabolism and in exercise performance have not been systematically studied during moderate- to high-intensity exercise in humans.  相似文献   
34.
Pedagogy Against the State   总被引:1,自引:0,他引:1  
  相似文献   
35.
36.
37.
This paper describes a study of observed relationships between the design of a preservice elementary mathematics methods course with accompanying field practicum and changes in the extent to which participating prospective teachers identified themselves with the mathematics reform movement after becoming practicing teachers. The curriculum of the course with its embedded field practicum experiences was designed to support prospective teachers in interweaving methods coursework and pedagogical instruction with classroom practice. University and elementary school structures were interwoven by conducting weekly mathematics methods course sessions at a school site followed immediately by related practicum experiences in classrooms in the school. The interweaving of conceptualizations about mathematics teaching and learning was facilitated as the methods instructor provided professional development for classroom teachers simultaneously with the methods course, encouraging the teachers to create “reform-friendly” classroom environments. Survey data from 68 prospective teachers involved in the project were analyzed to identify and describe relationships between course/practicum experiences and the degree to which they as practicing teachers, 1–3 years following the course/practicum, identified with a reform mathematics perspective, as well as to examine factors influencing those relationships.  相似文献   
38.
39.
Atwan, Robert, Barry Orton, and Alliam Vesterman. American Mass Media: Industries and Issues (New York: Random House, 1978—$8.95, paper)

Dennis, Everette E., Arnold H. Ismach, and Donald M. Gillmor, eds. Enduring Issues in Mass Communication (St. Paul, Minn.: West P.' _fishing Co., 1978—price not given, paper)

White, David Manning, and John Pendleton, eds. Popular Culture: Mirror of American Life (Del Mar, Calif.: Publisher's Inc., 1977—$11.95/6.25)

Charlene J. Brown, Trevor R. Brown, and William L. Rivers' The Media and the People (New York: Holt, Rinehart a Winston, 1978 —price not given, paper)

Malcolm Muggeridge's Christ and the Media (Grand Rapids, Mich.: William B. Eerdmans Publishing Co., 1977— $5.95)  相似文献   
40.
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