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   15280篇
  免费   204篇
  国内免费   12篇
教育   10435篇
科学研究   1387篇
各国文化   175篇
体育   1556篇
综合类   23篇
文化理论   118篇
信息传播   1802篇
  2021年   116篇
  2020年   218篇
  2019年   308篇
  2018年   365篇
  2017年   437篇
  2016年   381篇
  2015年   255篇
  2014年   335篇
  2013年   2801篇
  2012年   293篇
  2011年   339篇
  2010年   265篇
  2009年   292篇
  2008年   282篇
  2007年   283篇
  2006年   258篇
  2005年   233篇
  2004年   487篇
  2003年   370篇
  2002年   393篇
  2001年   253篇
  2000年   268篇
  1999年   210篇
  1998年   104篇
  1997年   126篇
  1996年   164篇
  1995年   143篇
  1994年   137篇
  1993年   129篇
  1992年   187篇
  1991年   186篇
  1990年   168篇
  1989年   221篇
  1988年   182篇
  1987年   212篇
  1986年   188篇
  1985年   237篇
  1984年   197篇
  1983年   178篇
  1982年   158篇
  1981年   135篇
  1980年   122篇
  1979年   184篇
  1978年   140篇
  1977年   130篇
  1976年   146篇
  1975年   111篇
  1974年   126篇
  1973年   103篇
  1971年   114篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
951.
952.
This study found that the auditors with initially extreme attitudes were affected differently by a speaker's evidence than were those with initially neutral attitudes and suggests that the role which evidence plays in persuasion may be related to the particular “game” a communicator plays with his audience.  相似文献   
953.
954.
This paper presents an overview of the origin of the industrial engineering discipline and the subjects taught in the early stages of its development. It describes in detail the current changes in the curricula to meet new requirements of the ever-changing industry demands due to the intense competition for the development of new products at the highest possible quality and the least cost. The changes have been reflected in many industrial engineering programmes. Indeed, in some cases the changes have also been reflected by a title change of the programme. The role of the accreditation committees and the Institute of Industrial Engineers, now celebrating its 50th anniversary, and its publications in shaping undergraduate education is also discussed.  相似文献   
955.
This investigation was conducted to compare the influence of high and low perceived competence (PC) and various causal dimension orientations on expectations, persistence, and performance while perceiving failure on a motor task. Based on a response to a PC scale, 84 junior high school students were selected to participate in this study. Separately, 42 low and 42 high PC subjects were oriented to perceive their performance on a stabilometer balancing task as due to: (a) internal, controllable, unstable factors (ICU); (b) internal, uncontrollable, stable factors (IUS); or (c) nothing in particular (NDO). Subjects then received fictitious negative feedback over 15 trials. Results revealed that persistence, expectations, and performance dependent measures were significant for PC and Causal Dimension groups. More specifically, the High PC group persisted longer, had higher expectations, and performed significantly better than the Low PC group. Furthermore, the subjects presented ICU orientations persisted for a longer amount of time, revealed higher expectations over trials, and performed significantly better over trials than the subjects in the IUS and NDO groups. These findings suggest that perceived competence and causal dimensional orientations influence children's expectations, persistence, and performance when perceiving failure on a motor task.  相似文献   
956.
In its search for an objective overall diagnostic evaluation, the University of Illinois Library of the Health Sciences' Program Evaluation Committee selected a book availability measure; it is easy to administer and repeat, results are reproducible, and comparable data exist for other academic and health sciences libraries. The study followed the standard methodology in the literature with minor modifications. Patrons searching for particular books were asked to record item(s) needed and the outcome of the search. Library staff members then determined the reasons for failures in obtaining desired items. The results of the study are five performance scores. The first four represent the percentage probability of a library's operating with ideal effectiveness; the last provides an overall performance score. The scores of the Library of the Health Sciences demonstrated no unusual availability problems. The study was easy to implement and provided meaningful, quantitative, and objective data.  相似文献   
957.
958.
Electromyographic analysis of bow string release in highly skilled archers   总被引:3,自引:1,他引:2  
A predominant archery coaching tenet holds that the most effective means of releasing the bow string is by relaxation of the finger flexor muscles without activation of finger extensors. To evaluate the validity of this view, EMG patterns of the flexor digitorum superficialis and extensor digitorum muscles of the draw arm were examined using surface EMG electrodes in 15 highly skilled archers as each performed six shots. Each archer displayed consistent EMG patterns from shot-to-shot and two distinct flexor-extensor patterns were exhibited by the sample. The first, characterized by eight of the archers, supported the relaxation principle. For these archers, both flexor and extensor digitorum activity decreased markedly immediately prior to or at arrow release. The second pattern, characteristic of the remaining seven archers, contradicted the coaching tenet. While the flexor digitorum pattern was essentially the same as that described for the first pattern, the extensor digitorum displayed a marked increase in activity just prior to release, indicating that string release was facilitated by an active extension of the fingers. It was concluded that highly skilled archers do not predominantly reflect a release consistent with the coaching canon and that factors other than the string release mechanism discriminate the performances of skilled archers.  相似文献   
959.
960.
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