全文获取类型
收费全文 | 2331篇 |
免费 | 54篇 |
国内免费 | 1篇 |
专业分类
教育 | 1787篇 |
科学研究 | 97篇 |
各国文化 | 38篇 |
体育 | 103篇 |
综合类 | 2篇 |
文化理论 | 23篇 |
信息传播 | 336篇 |
出版年
2023年 | 18篇 |
2022年 | 21篇 |
2021年 | 40篇 |
2020年 | 54篇 |
2019年 | 78篇 |
2018年 | 98篇 |
2017年 | 99篇 |
2016年 | 122篇 |
2015年 | 56篇 |
2014年 | 89篇 |
2013年 | 509篇 |
2012年 | 78篇 |
2011年 | 71篇 |
2010年 | 59篇 |
2009年 | 50篇 |
2008年 | 61篇 |
2007年 | 60篇 |
2006年 | 64篇 |
2005年 | 54篇 |
2004年 | 46篇 |
2003年 | 33篇 |
2002年 | 32篇 |
2001年 | 38篇 |
2000年 | 33篇 |
1999年 | 28篇 |
1998年 | 16篇 |
1997年 | 30篇 |
1996年 | 25篇 |
1995年 | 27篇 |
1994年 | 21篇 |
1993年 | 32篇 |
1992年 | 24篇 |
1991年 | 33篇 |
1990年 | 24篇 |
1989年 | 20篇 |
1988年 | 20篇 |
1987年 | 22篇 |
1986年 | 15篇 |
1985年 | 17篇 |
1984年 | 18篇 |
1983年 | 12篇 |
1982年 | 14篇 |
1981年 | 16篇 |
1980年 | 13篇 |
1979年 | 9篇 |
1978年 | 8篇 |
1977年 | 8篇 |
1976年 | 11篇 |
1974年 | 7篇 |
1972年 | 7篇 |
排序方式: 共有2386条查询结果,搜索用时 15 毫秒
11.
Systematic reviews need systematic searchers. 总被引:1,自引:0,他引:1
12.
Mamathole Margaret Lediga 《Public Library Quarterly》2018,37(3):296-305
ABSTRACTThe information and knowledge society has resulted in the exponential growth of information and communication technologies (ICTs), thus creating a gap between those who use ICTs and those who do not; hence the emergence of the term “digital divide” in the 1990s. One of the milestones of South Africa’s National Development Plan, a policy that charts the country’s development up until 2030, is to ensure that high-speed broadband internet is universally available at competitive prices. Notwithstanding the importance of ICTs in public libraries, the provision of such is still taking place on a limited scale in South Africa. This article investigates the use of ICTs in public libraries in South Africa as a tool in bridging the digital divide. It also examines the inequalities in access and use and suggests ways in which ICTs may be used to reduce the digital divide. A qualitative research methodology was adopted. In order for public libraries to function as an important tool in bridging the digital divide, there is a need to standardize the provision of public library services with regard to the digital divide. 相似文献
13.
14.
15.
This study investigates the convergence of two bibliometric approaches to the measurement of interdisciplinary research: one based on analyzing disciplinary diversity in the reference list of publications, the other based on the disciplinary diversity of authors of publications. In particular we measure the variety, balance, disparity and integrated diversity index of, respectively, single-author, multi-author single-field, and multi-author multi-field publications. We find that, in general, the diversity of the reference list grows with the number of fields reflected in a paper’s authors’ list and, to a lesser extent, with the number of authors being equal the number of fields. Further, we find that when fields belonging to different disciplines are reflected in the authors’ list, the disparity in the reference list is higher than in the case of fields belonging to the same discipline. However, this general tendency varies across disciplines, and noticeable exceptions are found at individual paper level. 相似文献
16.
17.
18.
19.
Rafael Boscolo-Berto Andrea Porzionato Carla Stecco Veronica Macchi Raffaele De Caro 《Anatomical sciences education》2021,14(6):739-751
The world has been turned upside down by a global health emergency caused by the Covid-19. Given the high contagiousness of the virus and the need to contain its spread, social distancing rules, self-isolation policies, and geographical lockdowns have been enforced globally. Over the pandemic emergency the majority of the planned in-person meetings and congresses of national and international anatomical societies have been postponed or canceled. It is unclear what the future holds, but times of crisis often present possibilities for re-thinking old ways to achieve a more critical approach. It has become increasingly clear that traditional in-person congress formats of scientific societies need to be reevaluated. Over the past year and a half, two types of congressional modalities have been trialed to address the challenge of the pandemic as far as scientific meetings are concerned: the fully virtual congress, in which case the conference program is live streamed to all of the attendees, and the hybrid congress, in which case some of the attendees physically participate at the congress's venue while others interact via a virtual platform. The current study set out to investigate the technical difficulties, social challenges, costs and sustainability, logistics and management issues linked to holding various types of congresses in the post-Covid world. Anatomical societies throughout the world are actively striving to reshape their response to the current global emergency and to uncover new types of conference modalities in the effort to keep scientific exchange alive and flourishing in the post-Covid era. 相似文献
20.