全文获取类型
| 收费全文 | 3660篇 |
| 免费 | 179篇 |
| 国内免费 | 331篇 |
专业分类
| 教育 | 1031篇 |
| 科学研究 | 710篇 |
| 体育 | 75篇 |
| 综合类 | 82篇 |
| 信息传播 | 2272篇 |
出版年
| 2023年 | 24篇 |
| 2022年 | 66篇 |
| 2021年 | 87篇 |
| 2020年 | 76篇 |
| 2019年 | 93篇 |
| 2018年 | 221篇 |
| 2017年 | 212篇 |
| 2016年 | 216篇 |
| 2015年 | 205篇 |
| 2014年 | 215篇 |
| 2013年 | 246篇 |
| 2012年 | 275篇 |
| 2011年 | 297篇 |
| 2010年 | 205篇 |
| 2009年 | 192篇 |
| 2008年 | 205篇 |
| 2007年 | 250篇 |
| 2006年 | 220篇 |
| 2005年 | 193篇 |
| 2004年 | 155篇 |
| 2003年 | 158篇 |
| 2002年 | 114篇 |
| 2001年 | 111篇 |
| 2000年 | 60篇 |
| 1999年 | 22篇 |
| 1998年 | 13篇 |
| 1997年 | 7篇 |
| 1996年 | 4篇 |
| 1995年 | 9篇 |
| 1994年 | 3篇 |
| 1993年 | 6篇 |
| 1992年 | 3篇 |
| 1991年 | 1篇 |
| 1990年 | 1篇 |
| 1989年 | 5篇 |
排序方式： 共有4170条查询结果，搜索用时 93 毫秒
991.
从开放获取与图书情报类期刊资源、图书情报类开放获取期刊资源名录、图书情报类开放获取期刊资源综合情况分析、图书情报类开放获取期刊资源的来源渠道和文献格式、图书情报类开放获取期刊资源的下载获取方式等多方面,对我国正在出版的38种图书情报类开放获取期刊资源及其利用方式进行了分析研究。 相似文献
992.
文章介绍了利用汇文系统进行开放获取期刊的编目实践,和字段著录中不同于其它文献类型编目之处,以及开放获取期刊书目数据维护工作要点。参考文献6。 相似文献
993.
994.
Michael G. Crisp 《资料收集管理》2013,38(1):53-56
This article examines Eigenfactor, a Web-based tool that librarians and others can use to ascertain the quality of research journals. Developed by Carl Bergstrom, a University of Washington biology professor, the eigenfactor.org Web site offers several components that users can employ to measure the significance of research publications: the Eigenfactor score, Article Influence score, and the Eigenfactor subject category list. These components are briefly explained along with the ability to discover the monetary value of research publications. 相似文献
995.
This study presents a meta-analysis of mass communication research on China from 2000 to 2010. It reveals patterns in authorship, methodological and theoretical approaches, medium, and area of focus, through a content analysis of 159 articles published in 20 major communication journals. Eight frameworks frequently used by communication scholars to study China are identified in a follow-up analytical review. The paper concludes with discussion on the implications of the findings and suggestions for future work. 相似文献
996.
The Journal Usage Statistics Portal (JUSP) provides a single point of access to journal usage data from participating publishers on behalf of UK academic libraries. In August 2011 JISC awarded funding to develop two value-added enhancements to support existing service provision and help libraries assess the value and impact of e-resources. This article describes the development of these enhancements and their impact. 相似文献
997.
Steven W. Sowards 《期刊图书馆员》2013,64(3-4):309-334
After a challenge to librarians by a British journal publisher to consider an alternative “pay only for use” model for journal articles, an extended e-mail conversation took place with the head of collections in one American academic library. That discussion explored issues in the current journal publication system and led to adoption of the model on an experimental basis. In practice, the model shed light on issues, strengths, and weaknesses of alternative and pay-per-view distribution of journal content, as part of an overall collection development strategy. 相似文献
998.
999.
The article discusses the need for initiatives to be undertaken by the King Fahd University of Petroleum & Minerals Library administration to acquire archives of and perpetual access to its subscribed electronic journals. It also reports the findings of a survey conducted to ascertain the publishers' positions on archiving services and the right to permanently access licensed materials paid for during the period of a license agreement. The findings are expected to help the library to plan for securing the right over a three-year period to ongoing access to the back files of journals from fifteen commercial and society publisher platforms. 相似文献
1000.