全文获取类型
收费全文 | 23355篇 |
免费 | 273篇 |
国内免费 | 27篇 |
专业分类
教育 | 16143篇 |
科学研究 | 2767篇 |
各国文化 | 206篇 |
体育 | 1678篇 |
综合类 | 21篇 |
文化理论 | 234篇 |
信息传播 | 2606篇 |
出版年
2022年 | 171篇 |
2021年 | 271篇 |
2020年 | 424篇 |
2019年 | 540篇 |
2018年 | 792篇 |
2017年 | 788篇 |
2016年 | 736篇 |
2015年 | 476篇 |
2014年 | 716篇 |
2013年 | 4086篇 |
2012年 | 592篇 |
2011年 | 591篇 |
2010年 | 547篇 |
2009年 | 491篇 |
2008年 | 543篇 |
2007年 | 509篇 |
2006年 | 469篇 |
2005年 | 392篇 |
2004年 | 426篇 |
2003年 | 372篇 |
2002年 | 374篇 |
2001年 | 482篇 |
2000年 | 526篇 |
1999年 | 412篇 |
1998年 | 236篇 |
1997年 | 299篇 |
1996年 | 271篇 |
1995年 | 201篇 |
1994年 | 224篇 |
1993年 | 191篇 |
1992年 | 343篇 |
1991年 | 318篇 |
1990年 | 319篇 |
1989年 | 342篇 |
1988年 | 304篇 |
1987年 | 291篇 |
1986年 | 273篇 |
1985年 | 322篇 |
1984年 | 232篇 |
1983年 | 226篇 |
1982年 | 198篇 |
1981年 | 180篇 |
1980年 | 175篇 |
1979年 | 279篇 |
1978年 | 198篇 |
1977年 | 177篇 |
1976年 | 140篇 |
1975年 | 142篇 |
1974年 | 150篇 |
1973年 | 146篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
51.
52.
V. A. Frolova S. K. Khasenova T. Sh. Kubieva O. A. Rog 《Scientific and Technical Information Processing》2008,35(2):104-106
This paper discusses the evaluation of scientific activity with the help of some scientometric indices, in particular, a citation index. The information massif of the bibliographic database of citations to domestic publications of Kazakh authors is statistically described. 相似文献
53.
A. V. Suvorinov A. V. Anyutin V. S. Sokolovskaya V. I. Fedorov 《Scientific and Technical Information Processing》2008,35(2):63-67
We consider some issues of the development of the national information infrastructure in the field of innovation, including a national system of accounting for the results of scientific and technical activities (RSTA) and a national new-generation research computer network (NNGRCN). The current state of the national system of scientific and technical information and its resources for information support of innovation processes are analyzed. In the context of further development of the Commonwealth of Independent States (CIS), we propose a Conception of scientific and technical support for programs and projects of NIS member-states in the field of innovation, making it possible to incorporate the existing innovation-oriented information resources into a joint distributed integrated information system as well as to create new information resources and technologies. 相似文献
54.
Long SS 《Medical reference services quarterly》1994,13(4):69-75
The expertise of colleagues and experience gained through professional organizations is an overlooked resource for adding value to reference service. Collegial networks must be nurtured. They deserve the support and investment of the institution. 相似文献
55.
Pfeiffer S 《Medical reference services quarterly》1997,16(2):23-25
AAMC STAT is a new, weekly electronic newsletter produced by the American Association of Medical Colleges. It provides coverage of national news related to academic medicine. This article briefly reviews the electronic publication and gives directions for subscribing to AAMC STAT. 相似文献
56.
Among the huge maze of resources available on the Internet, UnCoverWeb stands out as a valuable tool for medical libraries. This up-to-date, free-access, multidisciplinary database of periodical references is searched through an easy-to-learn graphical user interface that is a welcome improvement over the telnet version. This article reviews the basic and advanced search techniques for UnCoverWeb, as well as providing information on the document delivery functions and table of contents alerting service called Reveal. UnCover's currency is evaluated and compared with other current awareness resources. System deficiencies are discussed, with the conclusion that although UnCoverWeb lacks the sophisticated features of many commercial database search services, it is nonetheless a useful addition to the repertoire of information sources available in a library. 相似文献
57.
58.
59.
60.