全文获取类型
收费全文 | 2643篇 |
免费 | 59篇 |
国内免费 | 7篇 |
专业分类
教育 | 1987篇 |
科学研究 | 159篇 |
各国文化 | 41篇 |
体育 | 223篇 |
综合类 | 1篇 |
文化理论 | 28篇 |
信息传播 | 270篇 |
出版年
2022年 | 15篇 |
2021年 | 33篇 |
2020年 | 50篇 |
2019年 | 72篇 |
2018年 | 96篇 |
2017年 | 113篇 |
2016年 | 106篇 |
2015年 | 75篇 |
2014年 | 90篇 |
2013年 | 638篇 |
2012年 | 61篇 |
2011年 | 76篇 |
2010年 | 53篇 |
2009年 | 69篇 |
2008年 | 75篇 |
2007年 | 68篇 |
2006年 | 60篇 |
2005年 | 49篇 |
2004年 | 44篇 |
2003年 | 31篇 |
2002年 | 51篇 |
2001年 | 27篇 |
2000年 | 36篇 |
1999年 | 27篇 |
1998年 | 26篇 |
1997年 | 39篇 |
1996年 | 35篇 |
1995年 | 36篇 |
1994年 | 39篇 |
1993年 | 30篇 |
1992年 | 19篇 |
1991年 | 20篇 |
1990年 | 24篇 |
1989年 | 24篇 |
1988年 | 19篇 |
1987年 | 12篇 |
1986年 | 18篇 |
1985年 | 21篇 |
1984年 | 20篇 |
1983年 | 36篇 |
1982年 | 27篇 |
1981年 | 21篇 |
1980年 | 15篇 |
1979年 | 20篇 |
1978年 | 22篇 |
1977年 | 15篇 |
1975年 | 16篇 |
1974年 | 17篇 |
1973年 | 15篇 |
1965年 | 10篇 |
排序方式: 共有2709条查询结果,搜索用时 15 毫秒
1.
Frank Quinn 《Publishing Research Quarterly》1995,11(2):20-28
This article begins with an analysis of reliability and usability in the mathematical literature. Mathematical practice is
seen to be adapted to very high standards in these respects, and quite sensitive to even modest declines in quality. Unfortunately
most scenarios for the transition to electronic publication suggest serious loss of quality. This is a problem special to
mathematics: other sciences are adapted to lower standards, and should be much less sensitive to changes. Some ways to prevent
this decline are suggested.
A condensed version of this article appeared inNotices of the American Mathematical Society, 42, 1, January 1995. Published with permission of the American Mathematical Society. 相似文献
2.
3.
4.
5.
6.
Brian Jackson 《The Journal of Academic Librarianship》2018,44(5):603-612
Academic libraries have to a large extent taken the lead in facilitating new approaches to research data management, but changes to the research data landscape have had an impact on numerous areas of academic work, including ethics review. Using interpretive phenomenological analysis of interviews with chairs of Canadian research ethics boards, this study explores how ethics review boards have experienced changes to data policy and related technologies in order to describe the ethical implications of new approaches to data management and to explore ways in which the library, ethics review boards, and other campus partners might harmonize efforts to support emerging data practices. While ethics review boards in Canada are keenly aware of open data policies, data publishing in practice is still nascent. There is uncertainty about the adoption of changing technologies for research and their impacts on privacy protection. Where responsibility lies for addressing these uncertainties is often unclear. Academic libraries and research ethics boards are well-suited to engage in mutual knowledge transfer and to integrate data management planning and ethics review processes. Institutional-level oversight that includes all campus departments impacted by changes to the research data landscape may facilitate improved communication and reduce role ambiguity. 相似文献
7.
8.
9.
10.