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   2739篇
  免费   46篇
  国内免费   1篇
教育   1968篇
科学研究   153篇
各国文化   39篇
体育   289篇
文化理论   33篇
信息传播   304篇
  2022年   26篇
  2021年   26篇
  2020年   49篇
  2019年   98篇
  2018年   105篇
  2017年   127篇
  2016年   96篇
  2015年   61篇
  2014年   87篇
  2013年   655篇
  2012年   66篇
  2011年   66篇
  2010年   54篇
  2009年   66篇
  2008年   65篇
  2007年   63篇
  2006年   55篇
  2005年   48篇
  2004年   40篇
  2003年   47篇
  2002年   50篇
  2001年   45篇
  2000年   58篇
  1999年   44篇
  1998年   27篇
  1997年   22篇
  1996年   23篇
  1995年   25篇
  1994年   20篇
  1993年   32篇
  1992年   39篇
  1991年   36篇
  1990年   31篇
  1989年   23篇
  1988年   21篇
  1987年   25篇
  1986年   19篇
  1985年   27篇
  1984年   17篇
  1983年   14篇
  1982年   20篇
  1981年   24篇
  1980年   15篇
  1979年   22篇
  1978年   22篇
  1977年   12篇
  1976年   17篇
  1975年   10篇
  1968年   9篇
  1889年   9篇
排序方式: 共有2786条查询结果,搜索用时 0 毫秒
111.

Other Index

Index to Volume XLI  相似文献   
112.
The development of services provided by the National Library of Medicine (NLM), which dates back to 1836, is described. MEDLINE, a database of 10-plus million references and abstracts to the world's biomedical literature, was put on the World Wide Web for free searching in 1997 as a system called PubMed, whose use has grown to over 250 million searches per year. PubMed features a variety of links between MEDLINE references and related information – full-text journal articles, DNA sequence data, medical knowledge bases, etc. – at websites within and outside NLM. PubMed is a major component of a larger NLM system, Entrez, which integrates access to a number of genome-related databases with linking features similar to those of PubMed. The newest linked service, which became a reality in February 2000, is PubMed Central, the National Institutes of Health's free repository for primary research reports in all the life sciences.  相似文献   
113.
The aim of this study was to assess the influence of three imposed crank rates on the attainment of peak oxygen consumption (VO2peak) and other physiological responses during incremental arm crank ergometry. Twenty physically active, although non-specifically trained, males volunteered for the study. They completed an exercise protocol using an electrically braked arm ergometer (Lode Angio, Groningen, Netherlands) at crank rates of 60, 70 and 80 rev x min(-1). The order of tests was randomized and they were separated by at least 2 days. Peak VO2 was significantly higher (P < 0.05) at 70 and 80 rev x min(-1) than at 60 rev x min(-1). Peak ventilation volume increased as a function of crank rate and was higher (P < 0.05) at 80 than at 60 rev x min(-1). Peak heart rate was higher (P < 0.05) at 70 and 80 rev x min(-1) than at 60 rev x min(-1). Furthermore, 70 and 80 rev x min(-1) resulted in an extended test time compared with 60 rev x min(-1). The greater physiological responses observed during the tests at the two faster crank rates might have been the result of a postponement of acute localized neuromuscular fatigue, allowing for more work to be completed. We recommend, therefore, that an imposed crank rate between 70 and 80 rev x min(-1) should be used to elicit VO2peak and other physiological responses in arm crank ergometry.  相似文献   
114.
Explaining Post-War Cinema Attendance in Great Britain   总被引:1,自引:0,他引:1  
This paper models the interaction between cinema admissions and cinema supply in response to changes in exogenous variables, chiefly competition from television viewing. The relationship is estimated empirically by applying near Vector Autoregression (VAR) techniques to a long run of British annual data from 1950 to 1997. The results indicate that sustained negative shocks to cinema demand throughout most of the period reduced the supply of screens, inducing further falls in admissions and closures until a new equilibrium was attained. More recently, the introduction of multiplex cinemas has interrupted and partially reversed this downward demand-supply spiral.  相似文献   
115.
The higher education sector is increasingly reliant upon casual (‘sessional’) staff for teaching and marking purposes. While this practice has been little examined in the past, over the last few years increasing attention has been paid to the quality of marking, mainly because students and academic staff alike are becoming increasingly likely to question examples of poor practice. Hence, many universities in Australia are now attempting to introduce stricter procedures relating to marking. Despite current concerns, there is little published research on marking practices in Australian universities. This paper adds to the body of knowledge by reporting on two pieces of empirical research into the use of casual markers. A project at Charles Sturt University comprised focus groups of, respectively, students, lecturers and markers, and a survey of distance education students. Research at the University of South Australia focused on pedagogical issues relating to marking, comparing the approaches of permanent lecturing staff with those of sessional markers. The results of these projects provide a useful insight into areas of current concern to university staff and management.  相似文献   
116.
Transitions from education into work, or as part of career change and development, are increasingly central to policy debate and academic inquiry. However, the role that employers play in shaping transition is often overlooked. In this paper, we examine this issue through the experiences of a graduating cohort of ‘degree apprentices’. We present original analysis of new empirical data from what we believe to be the first substantive qualitative longitudinal research conducted with those experiencing this new vocational pathway in the English Apprenticeships system. Through analysis of repeat semi-structured interviews with 22 degree apprenticeship graduates (44 interviews in total), we provide early empirical insights into experiences of this new pathway and add to existing theoretical conceptualisations of transition within the educational literature and the employer's role within it. We show that the degree apprentice to graduate transition can be broken down into three key stages: ‘getting in’, ‘getting on’ and ‘going further’, and that employers—at both strategic and relational levels—shape experiences at each stage.  相似文献   
117.
Journal of Mathematics Teacher Education - This case study explored Prospective Elementary Mathematics Specialists’ (PEMSs) pedagogical practices during a K-5 Mathematics Endorsement (K-5 ME)...  相似文献   
118.
Multimedia computer programmes have been found to facilitate learning in children with Autistic Spectrum Disorders (ASD). However, the effectiveness of these resources is limited due to poor design or a lack of consideration of the ASD cognitive profile, particularly at the lower functioning end of the spectrum. This article attempts to tackle the problem of the lack of design guidelines, with the aim of facilitating the development of effective educational programmes for children with severe ASD. The case study reported here evaluated two literacy educational computer programmes, by observing five low-functioning children with ASD, compared to five neurotypical children (control cases). The two types of reading-support software contrasted in the study presented different characteristics. The children’s data analysed here concern observations of child–software interactive sessions based on video recordings and coded for attention deployment to each programme, including motivation and engagement indicators.  相似文献   
119.
Spatial ability (SA) is the cognitive capacity to understand and mentally manipulate concepts of objects, remembering relationships among their parts and those of their surroundings. Spatial ability provides a learning advantage in science and may be useful in anatomy and technical skills in health care. This study aimed to assess the relationship between SA and anatomy scores in first- and second-year medical students. The training sessions focused on the analysis of the spatial component of objects' structure and their interaction as applied to medicine; SA was tested using the Visualization of Rotation (ROT) test. The intervention group (n = 29) received training and their pre- and post-training scores for the SA tests were compared to a control group (n = 75). Both groups improved their mean scores in the follow-up SA test (P < 0.010). There was no significant difference in SA scores between the groups for either SA test (P = 0.31, P = 0.90). The SA scores for female students were significantly lower than for male students, both at baseline and follow-up (P < 0.010). Anatomy training and assessment were administered by the anatomy department of the medical school, and examination scores were not significantly different between the two groups post-intervention (P = 0.33). However, participants with scores in the bottom quartile for SA performed worse in the anatomy questions (P < 0.001). Spatial awareness training did not improve SA or anatomy scores; however, SA may identify students who may benefit from additional academic support.  相似文献   
120.
In the context of escalating criticism of university‐based teacher education across the world, a clear need exists for informed defence of the field and the profession as well as critical evaluation of both teacher education and schooling. This paper takes up the issue of the ‘outcomes question’ in this regard, arguing the case for a strong focus on social justice as the necessary complement to an ongoing concern with academic excellence and rigor. It argues the need for teacher educators and others to look closely at the different ways that educational outcomes are currently being defined and for these differences to be made more openly and widely available for criticism and discussion. The paper seeks to contribute to debate regarding the role and renewal of teacher education, in specific relation to widespread standards movements and the public good, and the conduct and governance of education more generally.  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