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   620篇
  免费   3篇
  国内免费   1篇
教育   478篇
科学研究   38篇
各国文化   13篇
体育   23篇
文化理论   22篇
信息传播   50篇
  2020年   8篇
  2019年   13篇
  2018年   12篇
  2017年   12篇
  2016年   14篇
  2015年   9篇
  2014年   9篇
  2013年   167篇
  2012年   11篇
  2011年   11篇
  2009年   5篇
  2008年   15篇
  2007年   18篇
  2006年   10篇
  2005年   9篇
  2004年   9篇
  2003年   8篇
  2002年   7篇
  2001年   9篇
  2000年   15篇
  1999年   5篇
  1998年   5篇
  1997年   7篇
  1996年   6篇
  1995年   9篇
  1994年   8篇
  1993年   6篇
  1991年   6篇
  1990年   12篇
  1989年   9篇
  1988年   7篇
  1987年   7篇
  1986年   5篇
  1985年   5篇
  1984年   9篇
  1983年   9篇
  1982年   4篇
  1981年   4篇
  1980年   4篇
  1978年   6篇
  1977年   6篇
  1976年   4篇
  1974年   6篇
  1973年   8篇
  1972年   9篇
  1971年   4篇
  1968年   9篇
  1967年   4篇
  1965年   4篇
  1963年   4篇
排序方式: 共有624条查询结果,搜索用时 15 毫秒
601.
602.
    
An effective procedure, employing an operational approach, is demonstrated for the analysis of constant parameter continuous systems with multiple lumped parameter attachments and concentrated forces. Convenience of the method and of the form in which the results are obtained are evaluated in comparison with other applicable methods. Systems with piecewise constant parameters are also investigated. The desirability of obtaining a complete closed-form steady-state solution and various methods of obtaining it are examined. Finally, an example is treated which illustrates the application of the operational method to system with jump discontinuities in deflection and slope.  相似文献   
603.
Objectives: To implement evidence‐supported delivery suite ward rounds using strategies to overcome barriers. Design: Qualitative case study to identify barriers and a quantitative assessment of outcomes on ward rounds. Method: After an introduction to the proposed evidence‐supported delivery suite ward round reactions were elicited from 15 clinicians. Responses were categorized into barriers related to knowledge, skills, attitudes and behaviour. Using strategies to overcome these barriers, a weekly evidence‐supported ward round was established. During patient‐centred discussions, clinical questions were formulated. Following literature searches, evidence was acquired and appraised. Results: Clinicians had limited awareness about the potential benefits of a clinical librarian's support during ward rounds. They were unsure of their skills in evidence‐based practice. There was scepticism, fear of loss of autonomy, poor motivation and resistance to change. Clinicians identified several factors that could impinge on their practice. Using appropriate strategies when evidence‐supported ward rounds were conducted, 67 questions were raised. However only seven articles were appraised in time to affect decisions on that ward round. Conclusions: Knowledge of barriers was helpful in developing plans for implementation of evidence‐supported ward rounds. The pilot study indicates the feasibility of this approach.  相似文献   
604.
This paper highlights the not-so-obvious but compelling reasons why the same supportive audiences that can help performers attain their highest potential also may increase performers' risk of choking under pressure. Drawing primarily from social psychology research and theory, we conclude that audience support magnifies performance pressure and induces performers to avoid failure rather than seek success during the most critical moments of performance contests. Although supportive audiences can inspire performers to excel when motivation would otherwise be lacking, audiences may also lead performers towards maladaptive self-monitoring and overcautiousness when the stakes are highest. The increased self-focus that supportive audiences induce can disrupt the automatic execution of the skills performers possess. Dispositional and situational moderators of the relationship between audience support and performance are reviewed.  相似文献   
605.
606.
607.
608.
    
Abstract

In this study, we investigated changes in creatine kinase, perceptual and neuromuscular fatigue of professional rugby league players after match-play. Twenty-three male rugby league players (10 backs, 13 forwards) had their creatine kinase, perceptual ratings of fatigue, attitude to training, muscle soreness, and flight time in a countermovement jump measured before and 1 and 2 days after (day 1 and day 2 respectively) league matches. Total playing time, offensive and defensive contacts were also recorded for each player. Creatine kinase was higher both 1 and 2 days after than before matches (P < 0.05) in forwards and backs. Similarly, perceived fatigue and muscle soreness were higher than pre-match on both days 1 and 2 (P < 0.05), but did not differ between groups (P > 0.05). Jump performance was lower on day 1 but not day 2 for both groups (P < 0.05). While total playing time was longer in backs (P < 0.05), relative frequencies for all contacts were greater in forwards (P < 0.05). Contacts for forwards were correlated with all markers of fatigue (P < 0.05), but only flight time was correlated with offensive contacts in backs (P < 0.05). Despite the mechanisms of fatigue being different between forwards and backs, our results highlight the multidimensional nature of fatigue after a rugby league match and that these markers do not differ between positions.  相似文献   
609.
610.
This commentary investigates the extent to which the control-value theory of emotions (Pekrun, 2006) is applicable in online learning environments. Four empirical studies in this special issue of The Internet and Higher Education explicitly used the control-value theory as their theoretical framework and several others have components of the theory implicitly described. Thus, for each article we examined what emotions were expressed, the antecedents of the emotions, and their academic outcomes in relation to the control-value theory of emotions. In general, the results from these studies parallel those in traditional classrooms, suggesting there are few differences in emotions experienced in online learning environments relative to face-to-face classrooms. A primary reason for the observed similarities in emotions may be that control and value appraisals play consistent roles as antecedents of specific emotions even though students’ learning environment is dramatically different. We conclude with suggestions for future research.  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