全文获取类型
收费全文 | 33634篇 |
免费 | 507篇 |
国内免费 | 266篇 |
专业分类
教育 | 22444篇 |
科学研究 | 3830篇 |
各国文化 | 282篇 |
体育 | 3067篇 |
综合类 | 695篇 |
文化理论 | 272篇 |
信息传播 | 3817篇 |
出版年
2022年 | 272篇 |
2021年 | 583篇 |
2020年 | 597篇 |
2019年 | 667篇 |
2018年 | 846篇 |
2017年 | 836篇 |
2016年 | 817篇 |
2015年 | 785篇 |
2014年 | 1040篇 |
2013年 | 4925篇 |
2012年 | 1208篇 |
2011年 | 1320篇 |
2010年 | 1149篇 |
2009年 | 1098篇 |
2008年 | 1151篇 |
2007年 | 1157篇 |
2006年 | 1079篇 |
2005年 | 943篇 |
2004年 | 709篇 |
2003年 | 598篇 |
2002年 | 639篇 |
2001年 | 729篇 |
2000年 | 663篇 |
1999年 | 591篇 |
1998年 | 386篇 |
1997年 | 346篇 |
1996年 | 396篇 |
1995年 | 300篇 |
1994年 | 314篇 |
1993年 | 268篇 |
1992年 | 392篇 |
1991年 | 384篇 |
1990年 | 358篇 |
1989年 | 378篇 |
1988年 | 341篇 |
1987年 | 326篇 |
1986年 | 328篇 |
1985年 | 376篇 |
1984年 | 297篇 |
1983年 | 307篇 |
1982年 | 240篇 |
1981年 | 248篇 |
1980年 | 261篇 |
1979年 | 349篇 |
1978年 | 260篇 |
1977年 | 239篇 |
1976年 | 199篇 |
1975年 | 181篇 |
1974年 | 182篇 |
1973年 | 176篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
Characteristics of early adopters of end-user online searching in the health professions 总被引:1,自引:0,他引:1
J G Marshall 《Bulletin of the Medical Library Association》1989,77(1):48-55
This paper examines end-user, online searching using data from a questionnaire mailed to 150 Canadian health professionals in practice settings. The response rate was 83% (n = 124). The data provide a demographic profile of early adopters of end-user searching in the health care community. Positive correlations with the user's level of implementation of end-user searching were found for the following variables: amount of time spent in research activities, amount of system training received, and use of Medical Subject Headings (MeSH). There was a negative association between the amount of time spent in patient care and implementation level. General practitioners and family physicians had lower implementation levels than physicians in other specialties. Successful implementers were more likely to be computer literate and to place a high value on formal information sources such as books, journals, and libraries. Health professionals using so-called "user-friendly" or menu-based software had lower levels of personal commitment to using online databases, as measured by a combination of continuance of use, willingness to pay personally, type of recommendations made to colleagues, and hardware ownership. 相似文献
62.
63.
64.
The formulations "All for the readers" and "Readers, the Supreme" highly summarize the meaning of serving the readers whole-heartly. To take the initiative to serve the readers is to bring into full play the librarians subjective initiative to find out of his own accord the readers opinions and demands and in all earnestness combined with a matter-of-fact and scientific analytical attitude to create unceasingly the way to serve readers and an administrative mechanism, both of which accord with the objective law. 相似文献
65.
66.
67.
68.
大学图书馆现代化指南针报告 总被引:1,自引:0,他引:1
教育部高等学校图书情报工作指导委员会和北京大学图书馆合作研制《大学图书馆现代化指南针报告》,报告主要采用德尔菲法对34位图书馆学、情报学领域的专家和学者进行了三轮意见征询,集成专家智慧,总结出大学图书馆现代化在核心理念、主要目标、实际问题、理论问题、关键要素和生态关系等方面的发展趋势,为实现大学图书馆内涵式发展、整体发展、高质量发展、科学发展、可持续发展提供方向指引,成为新时代新征程上大学图书馆谋划新思路、推动新发展、构建新格局的“指南针”。 相似文献
69.
J Lieberman 《Bulletin of the Medical Library Association》1972,60(1):22-25
The successful delivery of health care involves a commitment to improved communication both with regard to health professionals and the public. The need for innovative educational patterns is implicit in the recommendations of the latest Carnegie Commission Report, Higher Education and the Nation's Health.The new technology of videorecording permits the learner to learn at a time and place of his own choosing. Information is transmitted through the cathode ray tube-a television set-the medium of our time. The videorecord is of significant value in the basic and clinical sciences, in training personnel for allied health professions, and in continuing education. It is thoroughly compatible with the new concept of the open university, an institution without walls.In addition to its unquestioned value in educational programs in the health sciences, the videorecord has major implications for the curriculum in librarianship and for increasing the professional competence of medical librarians and their ancillaries. The medical librarian has a major stake in its imaginative use for overcoming some of the barriers to individual and community health. 相似文献
70.
J Barlup 《Bulletin of the Medical Library Association》1969,57(3):260-263
Science Citation Index is one of a number of indexes based on the assumption that the papers cited by one author refer to work which is relevant to the subject discussed by the author citing them. Cleverdon, however, has questioned that assumption, and it was to test the assumption that this research was undertaken. An attempt was made to determine what percent of articles cited were related to the citing article. The conclusion reached was that in the field of medicine approximately 72 percent of the cited papers were considered related to the original paper by the authors of the original, thus apparently bearing out the assumption for citation indexing. 相似文献