全文获取类型
收费全文 | 9099篇 |
免费 | 426篇 |
国内免费 | 4篇 |
专业分类
教育 | 7346篇 |
科学研究 | 526篇 |
各国文化 | 184篇 |
体育 | 560篇 |
综合类 | 1篇 |
文化理论 | 58篇 |
信息传播 | 854篇 |
出版年
2022年 | 33篇 |
2021年 | 89篇 |
2020年 | 152篇 |
2019年 | 299篇 |
2018年 | 319篇 |
2017年 | 388篇 |
2016年 | 286篇 |
2015年 | 293篇 |
2014年 | 349篇 |
2013年 | 2300篇 |
2012年 | 292篇 |
2011年 | 279篇 |
2010年 | 266篇 |
2009年 | 266篇 |
2008年 | 310篇 |
2007年 | 232篇 |
2006年 | 231篇 |
2005年 | 211篇 |
2004年 | 195篇 |
2003年 | 136篇 |
2002年 | 141篇 |
2001年 | 116篇 |
2000年 | 142篇 |
1999年 | 124篇 |
1998年 | 85篇 |
1997年 | 89篇 |
1996年 | 107篇 |
1995年 | 91篇 |
1994年 | 95篇 |
1993年 | 71篇 |
1992年 | 91篇 |
1991年 | 81篇 |
1990年 | 98篇 |
1989年 | 74篇 |
1988年 | 59篇 |
1987年 | 57篇 |
1986年 | 58篇 |
1985年 | 68篇 |
1984年 | 51篇 |
1983年 | 38篇 |
1982年 | 47篇 |
1981年 | 54篇 |
1980年 | 49篇 |
1979年 | 45篇 |
1978年 | 43篇 |
1977年 | 28篇 |
1976年 | 29篇 |
1974年 | 37篇 |
1973年 | 25篇 |
1971年 | 26篇 |
排序方式: 共有9529条查询结果,搜索用时 15 毫秒
11.
12.
Karyn Ogata Jones Bryan E. Denham Jeffrey K. Springston 《Journal of Applied Communication Research》2006,34(1):94-113
Drawing on components of agenda-setting theory and the two-step flow of information from mass media to news audiences, this study examines the effects of mass and interpersonal communication on breast cancer screening practices among college- and middle-aged women (n = 284). We theorized that screening behaviors among younger women would be influenced more by interpersonal sources of information while screening among middle-aged women would be more influenced by exposure to mass-mediated information. Findings supported anticipated patterns, revealing important and varying roles for both mass and interpersonal communication in the health behaviors of women. Implications for health practitioners and campaign planners, as well as recommendations for future research, are discussed. 相似文献
13.
14.
The Cross-Language Evaluation Forum has encouraged research in text retrieval methods for numerous European languages and has developed durable test suites that allow language-specific techniques to be investigated and compared. The labor associated with crafting a retrieval system that takes advantage of sophisticated linguistic methods is daunting. We examine whether language-neutral methods can achieve accuracy comparable to language-specific methods with less concomitant software complexity. Using the CLEF 2002 test set we demonstrate empirically how overlapping character n-gram tokenization can provide retrieval accuracy that rivals the best current language-specific approaches for European languages. We show that n = 4 is a good choice for those languages, and document the increased storage and time requirements of the technique. We report on the benefits of and challenges posed by n-grams, and explain peculiarities attendant to bilingual retrieval. Our findings demonstrate clearly that accuracy using n-gram indexing rivals or exceeds accuracy using unnormalized words, for both monolingual and bilingual retrieval. 相似文献
15.
This article reports on a large‐scale international survey of authors' perception and experience of the journals system conducted by ciber in association with National Opinion Polls (NOP). It explores the factors that inform authors' decisions where to publish and, in particular, which groups of readers they perceive to be most important. It probes readership behaviour and the values that underlie authors' attitudes towards copyright and emerging business models, notably open access. It is concluded that many aspects of author behaviour are highly conservative and that a significant shift towards open access is, in the short to medium term, highly unlikely. 相似文献
16.
Jennifer L. Jones 《图书馆管理杂志》2018,58(1):54-64
As academic libraries' budgets remain flat while their expenditures rise, library leaders must seek out alternative sources of funding. One option is a mandatory student fee dedicated to the library. This article presents the results of a survey of 152 deans and directors of public R1 and R2 research universities that were asked whether their libraries benefit from mandatory student fees. While a library-specific fee is unusual, nearly half of responding libraries are eligible to receive some portion of another mandatory student fee. Study results can serve as evidence for libraries preparing to make a case for the significant, positive impact possible through even a modest library fee. 相似文献
17.
Bringing the Law to the Library: The Importance of Librarian Mediation in Access to Justice Services
Yolanda Patrice Jones 《Legal Reference Services Quarterly》2018,37(1):11-37
Library access to justice programs and services help people who need legal information and who cannot afford an attorney. Librarian mediation is a critical component in the provision of access to justice services. However, the value of library mediation, or assistance with using library resources, is often unrecognized, particularly where members of the public are trying to access electronic legal information sources, online legal forms, and other law technologies. This article will explore the role of librarians in providing access to justice services from the perspective of the work of Richard Susskind, which emphasizes technological approaches to providing legal services. While there is a place for technology in access to justice services, there is also a valuable role that librarians play in contributing to access to justice. 相似文献
18.
Lotta Haglund Annikki Roos Petra Wallgren‐Björk 《Health information and libraries journal》2018,35(3):251-255
Librarians in Sweden are facing huge challenges in meeting the demands of their organisations and users. This article looks at four key areas: coping with open science/open access initiatives; increasing demands from researchers for support doing systematic reviews; understanding user experiences in Swedish health science libraries; and the consequences of expanding roles for recruitment and continuing professional development. With regard to changing roles, there is an increasing shift from the generalist towards the expert role. The authors raise the issue as to how to prepare those new to the profession to the changing environment of health science libraries. 相似文献
19.
20.