全文获取类型
收费全文 | 10114篇 |
免费 | 130篇 |
国内免费 | 6篇 |
专业分类
教育 | 6787篇 |
科学研究 | 1149篇 |
各国文化 | 340篇 |
体育 | 775篇 |
综合类 | 4篇 |
文化理论 | 69篇 |
信息传播 | 1126篇 |
出版年
2021年 | 95篇 |
2020年 | 146篇 |
2019年 | 208篇 |
2018年 | 265篇 |
2017年 | 274篇 |
2016年 | 255篇 |
2015年 | 168篇 |
2014年 | 220篇 |
2013年 | 1829篇 |
2012年 | 215篇 |
2011年 | 216篇 |
2010年 | 193篇 |
2009年 | 191篇 |
2008年 | 256篇 |
2007年 | 239篇 |
2006年 | 192篇 |
2005年 | 194篇 |
2004年 | 190篇 |
2003年 | 135篇 |
2002年 | 131篇 |
2001年 | 168篇 |
2000年 | 196篇 |
1999年 | 163篇 |
1998年 | 90篇 |
1997年 | 91篇 |
1996年 | 83篇 |
1994年 | 73篇 |
1993年 | 87篇 |
1992年 | 141篇 |
1991年 | 153篇 |
1990年 | 158篇 |
1989年 | 159篇 |
1988年 | 125篇 |
1987年 | 119篇 |
1986年 | 121篇 |
1985年 | 162篇 |
1984年 | 129篇 |
1983年 | 123篇 |
1982年 | 106篇 |
1981年 | 81篇 |
1980年 | 91篇 |
1979年 | 145篇 |
1978年 | 91篇 |
1977年 | 95篇 |
1976年 | 80篇 |
1975年 | 80篇 |
1974年 | 91篇 |
1973年 | 82篇 |
1971年 | 77篇 |
1968年 | 76篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
B G Roth 《Bulletin of the Medical Library Association》1978,66(1):14-18
Libraries today, including most hospital-based patients' libraries, are involved only peripherally in providing patient health science information. Hospital libraries should collaborate with health professionals in getting health information to patients--along with the library's more traditional roles of providing recreational reading for patients and serving the informational needs of the physician and medical staff. The library should act as the center for educational materials and programs within the hospital. Many health agencies, health educators, physicians, and librarians have been discussing the need for patient health education, but there are few effectively organized or established education centers. This paper discusses an overview of patient health education and intellectural freedom, proposes a new role for the existing hospital library in patient health education, and suggests guidelines for establishing a patient education center. 相似文献
43.
44.
45.
46.
47.
48.
This paper describes the procedures used at the Library of the College of Physicians of Philadelphia to divide its ninety-year-old dictionary card catalog. The division was necessitated by overcrowding, obsolete subject headings, and lack of a complete authority list which resulted in like materials being scattered throughout the catalog under several headings. Two catalogs were created: the historical-biographical catalog, representing all works published before 1950 and all works of historical or biographical nature; and the current catalog, containing all works published from 1950 on, excepting historical or biographical materials. The 1950- catalog was further divided into name and subject catalogs, and the subject section was revised according to MeSH. The project was completed in about two years. As a result, searching time has been much reduced, and the library is able to take advantage of the annual revisions of MeSH to update the subject catalog. 相似文献
49.
B Bogen 《Bulletin of the Medical Library Association》1976,64(2):224-227
A computer-generated catalog of nonprint media is described. Examples are given of four access points to the data base: (1) main entry, (2) title, (3) MeSH terms, and (4) broad subject categories. The data input procedure is summarized. The AV catalog as the basis for a union list is evaluated, and finally, the catalog in relation to certain local problems is discussed. 相似文献
50.
This study examined two levels of media agenda effects on aggregatepublic opinion from different news sources. The effects wereinvestigated immediately and cumulatively. Content analysisdata from the 2000 U.S. presidential election coverage by fournational news organizations were related to the Gallup pre-electionpoll standings of each candidate. Regression analyses foundthat both the salience of a candidate and the salience of theattributes of a candidate cumulatively, but not immediately,influenced his standing in the polls. An analysis of news sourcessupported the finding that the two levels of agenda-settingeffects seemed mostly cumulative rather than immediate. Newsfrom different sources, however, tended to have effects of differentdegrees and sometimes different directions on candidate pollstandings. Cumulative effects of candidate salience on aggregateopinion change were found for non-partisan and neutral newssourcesreporters, poll reporting and public documentswhereasthe effects of candidate attribute salience mostly came frompartisan sourcesthe candidate himself and members ofthe competing political party. Possible political implicationsof these findings are discussed. 相似文献