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   3750篇
  免费   31篇
教育   2610篇
科学研究   317篇
各国文化   59篇
体育   348篇
综合类   2篇
文化理论   50篇
信息传播   395篇
  2022年   19篇
  2021年   38篇
  2020年   69篇
  2019年   107篇
  2018年   122篇
  2017年   112篇
  2016年   94篇
  2015年   63篇
  2014年   115篇
  2013年   848篇
  2012年   86篇
  2011年   94篇
  2010年   76篇
  2009年   76篇
  2008年   81篇
  2007年   74篇
  2006年   93篇
  2005年   83篇
  2004年   72篇
  2003年   71篇
  2002年   55篇
  2001年   49篇
  2000年   57篇
  1999年   51篇
  1998年   55篇
  1997年   46篇
  1996年   40篇
  1995年   35篇
  1994年   34篇
  1993年   39篇
  1992年   32篇
  1991年   38篇
  1990年   42篇
  1989年   42篇
  1988年   46篇
  1987年   43篇
  1986年   35篇
  1985年   32篇
  1984年   37篇
  1983年   43篇
  1982年   30篇
  1981年   21篇
  1980年   26篇
  1979年   42篇
  1978年   37篇
  1977年   29篇
  1976年   31篇
  1974年   25篇
  1973年   26篇
  1969年   19篇
排序方式: 共有3781条查询结果,搜索用时 0 毫秒
961.
962.
Primary schooling will continue to be the terminal stage of education for most Kenyan children, and it will have to prepare them for employment that they will create for themselves. What this might imply for the teaching of craft skills is examined. Soapstone carving was selected as the subject of study because it is an important form of self-employment in western Kenya. The acquisition of craft skills in and outside schools was compared using observational and experimental methods. It is argued that school instruction provides little opportunity to develop competence in carrying out cognitive and psychomotor tasks important to expert performance in this and perhaps many other craft occupations.  相似文献   
963.
Many sports associated with anterior cruciate ligament (ACL) injury require athletes attend to a ball during participation. We investigated effects of attending to a ball on lower extremity mechanics during a side-cut maneuver and if these effects are consistent for males and females. Sagittal and frontal plane hip and knee kinematics and joint moments were measured during side-cut maneuvers in 19 male and 19 female National Collegiate Athletic Association division III basketball players. Participants also experienced two side-cut conditions that required attention to a ball. Our results did not indicate that the effect of attention varies with gender. However, during side-cut conditions while attending to a ball, internal knee adductor moment was 20% greater (p = 0.03) and peak knee flexion angle was 4 degrees larger (p < 0.01). Females demonstrated 5 degrees less hip flexion (p = 0.046), 12 degrees less knee flexion (p < 0.01), and 4 degrees more knee abduction (p = 0.026) at initial contact during all side-cut conditions than males. Attention to a ball may affect lower extremity mechanics relevant to ACL injury. The validity of laboratory studies of lower extremity mechanics for sports that include attention to a ball may be increased if participants are required to attend to a ball during the task.  相似文献   
964.
The purpose of this study was to evaluate the traction characteristics of four different stud configurations on Fédération Internationale de Football Association (FIFA) 2-Star, third-generation artificial soccer turf. The investigated stud configurations were hard ground design, firm ground design, soft ground design, and an experimental prototype. The concept of this study combines performance, perception, biomechanical, and mechanical testing procedures. Twenty-five soccer players took part in the different testing procedures. Variables of this study were: running times, subjective rankings/ratings, ground reaction forces, and mechanical traction properties. Statistical discrimination between the four stud configurations was shown for performance, perception, and biomechanical testing (p < 0.05). Unsuited stud configurations for playing on artificial turf are characterized by less plain distributed and pronounced studs.  相似文献   
965.
966.
967.
968.
969.
Are variations in test-preparation practices from school to school undermining the meaningfulness of achievement test results? Is there pressure to raise achievement test scores by the use of educationally unsound practices? What uses of achievement test scores are most common? Do teachers and administrators have reasonably accurate views of test score uses?  相似文献   
970.
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