全文获取类型
收费全文 | 2865篇 |
免费 | 70篇 |
国内免费 | 4篇 |
专业分类
教育 | 2303篇 |
科学研究 | 60篇 |
各国文化 | 40篇 |
体育 | 143篇 |
文化理论 | 21篇 |
信息传播 | 372篇 |
出版年
2023年 | 33篇 |
2022年 | 28篇 |
2021年 | 63篇 |
2020年 | 79篇 |
2019年 | 134篇 |
2018年 | 192篇 |
2017年 | 190篇 |
2016年 | 157篇 |
2015年 | 102篇 |
2014年 | 131篇 |
2013年 | 615篇 |
2012年 | 97篇 |
2011年 | 87篇 |
2010年 | 69篇 |
2009年 | 77篇 |
2008年 | 84篇 |
2007年 | 76篇 |
2006年 | 66篇 |
2005年 | 61篇 |
2004年 | 33篇 |
2003年 | 44篇 |
2002年 | 46篇 |
2001年 | 26篇 |
2000年 | 28篇 |
1999年 | 31篇 |
1998年 | 23篇 |
1997年 | 30篇 |
1996年 | 25篇 |
1995年 | 23篇 |
1994年 | 25篇 |
1993年 | 37篇 |
1992年 | 22篇 |
1991年 | 17篇 |
1990年 | 24篇 |
1989年 | 14篇 |
1988年 | 8篇 |
1987年 | 9篇 |
1986年 | 17篇 |
1985年 | 12篇 |
1984年 | 7篇 |
1983年 | 12篇 |
1982年 | 7篇 |
1981年 | 4篇 |
1980年 | 6篇 |
1979年 | 7篇 |
1978年 | 11篇 |
1977年 | 8篇 |
1975年 | 8篇 |
1974年 | 8篇 |
1967年 | 3篇 |
排序方式: 共有2939条查询结果,搜索用时 15 毫秒
1.
Megan K. Schraedley Hamilton Bean Sarah E. Dempsey Mohan J. Dutta Kathleen P. Hunt Sonia R. Ivancic 《Journal of Applied Communication Research》2020,48(2):166-185
ABSTRACTThis forum brings together food, (in)security, and communication. The authors participating in this forum center communication as both process and tool for understanding, mitigating, and making meaning of food (in)security. The nine authors together discuss the role of communication in food (in)security, the central challenges for scholars and practitioners working on food (in)security, and the creative possibilities and impacts influencing the future of food (in)security. The forum produces a call for applied scholars to re-imagine communication frameworks in order to make meaningful differences in their communities. 相似文献
2.
3.
Jane Harrison 《Health information and libraries journal》1997,14(1):33-42
Thepractice of evidence-based health care requires that information on methodology be identifiedfrom databases such as MEDLINE. Up until this year there have been no designated medicalsubject headings (MeSH) for evidence-based health care. ‘EVIDENCE-BASEDMEDICINE’ appears as a MeSH term from 1997. The absence of designated MeSH forthis concept prior to 1997 provides a challenge to the searcher. This paper describes the creationof a MEDLINE search strategy to retrieve articles on the methods of evidence-based health carepublished prior to the introduction of the new term, where an optimal combination of free-textand MeSH terms is required to identify relevant material. The study examines both free-text andsubject heading searching and attempts an optimal balance of sensitivity and specificity. It beginsby examining separate free-text and subject heading searches. Sensitivity of the subject headingsearch was 33% and specificity 80%, while the free-text search produced asensitivity of 50% and a specificity of 67%. The final strategy, combining bothapproaches, was more successful with sensitivity reaching between 82 and 90% andspecificity 83%. It is therefore possible to devise a search strategy to retrieve articles on themethods of evidence-based health care with relatively successful rates of sensitivity andspecificity. The limitations of MEDLINE, however, necessitate the use of additional approachesin identifying articles on the methods of evidence-based health care. 相似文献
4.
5.
6.
7.
Gill Needham Jane Holdsworth Denise Miles 《Health information and libraries journal》1991,8(3):170-171
相似文献
8.
Jane Dorner 《Instructional Science》1992,21(1-3):5-14
Last year 1279 professional authors completed a lengthy questionnaire on their use of, and attitudes towards, technological tools for writing and publishing. The data were analysed quantitatively, by examining the most frequent responses to items on the questionnaire, and qualitatively, by looking closely at details illuminating the relationship between authors and publishers. The results, for present purposes, are divided into three broad bands of interest: first, what types of writing software authors are currently using; second, what the implications of using authors' disks in the publication chain are; and third, how technology alters perceptions of the copy as a unit of sale. Findings suggest that though authors are operating at basic levels, they have embraced technology with more enthusiasm than their publishers. The challenge facing those involved in books is to make provision for presenting and displaying work in electronic form: to improve contracts and licensing agreements, and to disseminate information on technology to authors.Funded by the British National Bibliography Reseach Fund.© Jane Dorner, 1991 相似文献
9.
10.
Sarah Anne Murphy Martha A Bedard Jill Crawley-Low Diane Fagen Jean-Paul Jette 《Journal of the Medical Library Association》2005,93(1):130-132
The Standards Committee of the Veterinary Medical Libraries Section was appointed in May 2000 and charged to create standards for the ideal academic veterinary medical library, written from the perspective of veterinary medical librarians. The resulting Standards for the Academic Veterinary Medical Library were approved by members of the Veterinary Medical Libraries Section during MLA '03 in San Diego, California. The standards were approved by Section Council in April 2005 and received final approval from the Board of Directors of the Medical Library Association during MLA '04 in Washington, DC. 相似文献