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   29843篇
  免费   254篇
  国内免费   123篇
教育   21511篇
科学研究   3396篇
各国文化   175篇
体育   1913篇
综合类   12篇
文化理论   530篇
信息传播   2683篇
  2021年   137篇
  2020年   257篇
  2019年   385篇
  2018年   2663篇
  2017年   2572篇
  2016年   2065篇
  2015年   443篇
  2014年   525篇
  2013年   3300篇
  2012年   613篇
  2011年   1163篇
  2010年   1159篇
  2009年   743篇
  2008年   988篇
  2007年   1497篇
  2006年   406篇
  2005年   716篇
  2004年   754篇
  2003年   681篇
  2002年   440篇
  2001年   307篇
  2000年   325篇
  1999年   314篇
  1998年   168篇
  1997年   201篇
  1996年   220篇
  1995年   205篇
  1994年   158篇
  1993年   163篇
  1992年   241篇
  1991年   262篇
  1990年   253篇
  1989年   282篇
  1988年   227篇
  1987年   241篇
  1986年   250篇
  1985年   277篇
  1984年   241篇
  1983年   238篇
  1982年   209篇
  1981年   195篇
  1980年   182篇
  1979年   275篇
  1978年   205篇
  1977年   195篇
  1976年   168篇
  1975年   137篇
  1974年   163篇
  1973年   136篇
  1971年   124篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
Working Graphs     
  相似文献   
33.
34.
35.
36.
37.
Time series analysis was used to investigate the hypothesis that during acquisition of a motor skill, knowledge of results (KR) information is used to generate a stable internal referent about which response errors are randomly distributed. Sixteen subjects completed 50 acquisition trials of each of three movements whose spatial-temporal characteristics differed. Acquisition trials were either blocked, with each movement being presented in series, or randomized, with the presentation of movements occurring in random order. Analysis of movement time data indicated the contextual interference effect reported in previous studies was replicated in the present experiment. Time series analysis of the acquisition trial data revealed the majority of individual subject response patterns during blocked trials were best described by a model with a temporarily stationary, internal reference of the criterion and systematic, trial-to-trial variation of response errors. During random trial conditions, response patterns were usually best described by a "White-noise" model. This model predicts a permanently stationary, internal reference associated with randomly distributed response errors that are unaffected by KR information. These results are not consistent with previous work using time series analysis to describe motor behavior (Spray & Newell, 1986).  相似文献   
38.
The current societal and professional context presents a variety of ethical challenges to decision makers. The importance of educational preparation for ethical decision-making and ethical leadership has been addressed in the literature of library and information science (LIS), among other professions. However, it can be quite difficult to measure the impact of professional ethics education on students. This article is based on an evaluation of published original research related to ethics education in disciplines supported by professional education, including education, nursing, allied health, journalism, social work, public health, engineering, and LIS. The study considers data related to research design, methodologies used, populations studied, approaches to measuring impact, levels of impact, and publication in the journal literature. Results indicate more extensive research in education and nursing as compared with other fields, a lack of baseline data gathering for comparison, a reliance on a limited number of data-gathering techniques, and a tendency toward studying alumni over current students  相似文献   
39.
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