全文获取类型
收费全文 | 24635篇 |
免费 | 633篇 |
国内免费 | 297篇 |
专业分类
教育 | 15727篇 |
科学研究 | 4150篇 |
各国文化 | 28篇 |
体育 | 1857篇 |
综合类 | 1248篇 |
文化理论 | 11篇 |
信息传播 | 2544篇 |
出版年
2024年 | 24篇 |
2023年 | 96篇 |
2022年 | 305篇 |
2021年 | 540篇 |
2020年 | 825篇 |
2019年 | 650篇 |
2018年 | 515篇 |
2017年 | 596篇 |
2016年 | 640篇 |
2015年 | 761篇 |
2014年 | 1634篇 |
2013年 | 2400篇 |
2012年 | 2090篇 |
2011年 | 2095篇 |
2010年 | 1452篇 |
2009年 | 1239篇 |
2008年 | 1428篇 |
2007年 | 1716篇 |
2006年 | 1539篇 |
2005年 | 1309篇 |
2004年 | 1030篇 |
2003年 | 922篇 |
2002年 | 662篇 |
2001年 | 470篇 |
2000年 | 239篇 |
1999年 | 105篇 |
1998年 | 78篇 |
1997年 | 51篇 |
1996年 | 32篇 |
1995年 | 25篇 |
1994年 | 27篇 |
1993年 | 16篇 |
1992年 | 15篇 |
1991年 | 10篇 |
1990年 | 5篇 |
1989年 | 2篇 |
1987年 | 2篇 |
1985年 | 1篇 |
1979年 | 2篇 |
1978年 | 1篇 |
1977年 | 3篇 |
1976年 | 6篇 |
1957年 | 7篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
171.
期刊编辑防范学术不端能力培养的必要性与策略 总被引:1,自引:0,他引:1
期刊编辑的初审工作是阻止学术不端稿件传播极为重要的环节,培养和加强编辑的防范意识与能力,有利于维护科研诚信和出版秩序.从学术不端行为不会消失、学术不端检测系统不是万能、学术不端行为日益隐蔽和期刊编辑囿于日常工作4个角度,分析培养和加强编辑防范意识与能力的必要性,提出了入职培训、定期宣传、积累传承经验和制订问责机制4条策略. 相似文献
172.
173.
In 2014, a female-only detention and re-entry facility was restructured to implement new rehabilitative philosophies rooted in strategies to prepare incarcerated women for successful transition into society. A specialized housing unit called incentive-based housing (IBH) was created within this facility to promote an environment of accountability and responsibility. Here, women are expected to be proactive in seeking and achieving successes through programming, all while offering support to one another. In this study, participant observations and interviews were used to understand how 12 incarcerated women living in IBH communicate support. This qualitative study revealed three forms of support being communicated: (a) accountability, (b) validation, and (c) compassion. This study also revealed forms of communication that complicate support, including (a) drama and (b) rivalry. Communication of support is important to consider as we devise new approaches to rehabilitation within America’s criminal justice system. 相似文献
174.
Lotta Haglund Annikki Roos Petra Wallgren‐Björk 《Health information and libraries journal》2018,35(3):251-255
Librarians in Sweden are facing huge challenges in meeting the demands of their organisations and users. This article looks at four key areas: coping with open science/open access initiatives; increasing demands from researchers for support doing systematic reviews; understanding user experiences in Swedish health science libraries; and the consequences of expanding roles for recruitment and continuing professional development. With regard to changing roles, there is an increasing shift from the generalist towards the expert role. The authors raise the issue as to how to prepare those new to the profession to the changing environment of health science libraries. 相似文献
175.
This article describes the ongoing efforts at University of Nevada, Las Vegas (UNLV) Libraries to evolve the role of the institutional repository (IR) and to effectively position it within the context of the Libraries’ collections, research support, and scholarly communication services. A major component of this process is re-examining the fundamental aims of the IR and aligning it to the Libraries and the campus strategic goals. The authors situate UNLV Libraries’ experience within the context of the current literature to provide background and reasoning for our decision to pursue two, at times conflicting, aims for the IR: one for scholarly communication and another for research administration. 相似文献
176.
Many studies demonstrate differences in the coverage of citing publications in Google Scholar (GS) and Web of Science (WoS). Here, we examine to what extent citation data from the two databases reflect the scholarly impact of women and men differently. Our conjecture is that WoS carries an indirect gender bias in its selection criteria for citation sources that GS avoids due to criteria that are more inclusive. Using a sample of 1250 U.S. researchers in Sociology, Political Science, Economics, Cardiology and Chemistry, we examine gender differences in the average citation coverage of the two databases. We also calculate database-specific h-indices for all authors in the sample. In repeated simulations of hiring scenarios, we use these indices to examine whether women's appointment rates increase if hiring decisions rely on data from GS in lieu of WoS. We find no systematic gender differences in the citation coverage of the two databases. Further, our results indicate marginal to non-existing effects of database selection on women's success-rates in the simulations. In line with the existing literature, we find the citation coverage in WoS to be largest in Cardiology and Chemistry and smallest in Political Science and Sociology. The concordance between author-based h-indices measured by GS and WoS is largest for Chemistry followed by Cardiology, Political Science, Sociology and Economics. 相似文献
177.
We have studied the efficiency of research in the EU by a percentile-based citation approach that analyzes the distribution of country papers among the world papers. Going up in the citation scale, the frequency of papers from efficient countries increases while the frequency from inefficient countries decreases. In the percentile-based approach, this trend, which is uniform at any citation level, is measured by the ep index that equals the Ptop 1%/Ptop 10% ratio. By using the ep index we demonstrate that EU research on fast-evolving technological topics is less efficient than the world average and that the EU is far from being able to compete with the most advanced countries. The ep index also shows that the USA is well ahead of the EU in both fast- and slow-evolving technologies, which suggests that the advantage of the USA over the EU in innovation is due to low research efficiency in the EU. In accord with some previous studies, our results show that the European Commission’s ongoing claims about the excellence of EU research are based on a wrong diagnosis. The EU must focus its research policy on the improvement of its inefficient research. Otherwise, the future of Europeans is at risk. 相似文献
178.
179.
张峻玮 《体育科技文献通报》2020,(6):108-109,160,165
为了深入探讨提高学生在篮球教学中的观察学习能力,本论文主要通过文献资料法,对观察学习的分类及其过程进行阐述,分析了观察学习与相关学习的区别。并对学员观察学习的对象及其特点进行了分析,最后根据观察学习理论与学生身心特点给出了相关建议。 相似文献
180.
闻文 《宁波教育学院学报》2011,13(6):21-23,50
近代中国留学史研究发端于二十世纪初的教育史研究,且较早得到国外学者的关注。自上世纪九十年代,相关学术成果不断涌现。目前,理论视角、研究方法以及史料运用等方面存在的问题成为制约留学史研究进一步发展的瓶颈。 相似文献