全文获取类型
收费全文 | 4094篇 |
免费 | 87篇 |
国内免费 | 1篇 |
专业分类
教育 | 3225篇 |
科学研究 | 162篇 |
各国文化 | 50篇 |
体育 | 257篇 |
综合类 | 1篇 |
文化理论 | 15篇 |
信息传播 | 472篇 |
出版年
2023年 | 16篇 |
2022年 | 17篇 |
2021年 | 51篇 |
2020年 | 71篇 |
2019年 | 133篇 |
2018年 | 155篇 |
2017年 | 162篇 |
2016年 | 144篇 |
2015年 | 104篇 |
2014年 | 141篇 |
2013年 | 885篇 |
2012年 | 117篇 |
2011年 | 112篇 |
2010年 | 83篇 |
2009年 | 113篇 |
2008年 | 122篇 |
2007年 | 99篇 |
2006年 | 89篇 |
2005年 | 90篇 |
2004年 | 110篇 |
2003年 | 81篇 |
2002年 | 68篇 |
2001年 | 66篇 |
2000年 | 83篇 |
1999年 | 71篇 |
1998年 | 47篇 |
1997年 | 54篇 |
1996年 | 54篇 |
1995年 | 40篇 |
1994年 | 58篇 |
1993年 | 46篇 |
1992年 | 59篇 |
1991年 | 44篇 |
1990年 | 39篇 |
1989年 | 32篇 |
1988年 | 30篇 |
1987年 | 23篇 |
1986年 | 29篇 |
1985年 | 29篇 |
1984年 | 33篇 |
1983年 | 29篇 |
1982年 | 19篇 |
1981年 | 29篇 |
1980年 | 20篇 |
1979年 | 27篇 |
1978年 | 17篇 |
1977年 | 15篇 |
1975年 | 12篇 |
1974年 | 16篇 |
1971年 | 17篇 |
排序方式: 共有4182条查询结果,搜索用时 15 毫秒
11.
Susan J. Gardner John Eric Juricek F. Grace Xu 《The Journal of Academic Librarianship》2008,34(1):16-24
Web sites are increasingly used by academic libraries to promote key services and collections to teaching faculty. This study analyzes the content, location, language, and technological features of fifty-four academic library Web pages designed especially for faculty to expose patterns in the development of these pages. 相似文献
12.
One of the highest priorities in today's hospitals is the provision of quality care to patients. The medical librarian has an increased responsibility to furnish quality information to the medical staff. Traditional methods of reference service continue to work well, but it is increasingly important for librarians to become more directly involved in hospital quality assurance (QA) activities. Occurrence screening is one system of QA where the librarian can make a difference. 相似文献
13.
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
14.
15.
16.
Susan Xue 《Journal of Government Information》2004,30(1):87-109
As the People's Republic of China plays an increasingly important role in international politics and trade, countries with economic interests there find they need to know more about this nation. Access to primary information sources, including official statistics from China, however, is very limited, as little exploration has been done into this closely controlled repository of information. This study explores major current statistical sources in China through examining (a) the statistical system in Chinese government, (b) the mechanism of statistical data collection, and (c) what statistical information is currently available in both print and electronic format and at what level. It shows that a wealth of statistical information does exist in China, it is systematically compiled, and it is available, although not conveniently, to the public through various channels. This study can serve the need for China's data from the academic and business communities, contribute to a better understanding of China's statistical system, and serve as a collection tool for academic, public, and corporation libraries as well. 相似文献
17.
Library as place: results of a delphi study. 总被引:1,自引:0,他引:1
OBJECTIVE: An expert consensus on the future of the library as place was developed to assist health sciences librarians in designing new library spaces. METHOD: An expert panel of health sciences librarians, building consultants, architects, and information technologists was asked to reflect on the likelihood, desirability, timing, and impact on building design of more than seventy possible changes in the use of library space. RESULTS: An expert consensus predicted that the roles librarians play and the way libraries are used will substantially change. These changes come in response to changes in technology, scholarly communication, learning environments, and the health care economy. CONCLUSIONS: How health sciences library space is used will be far less consistent by 2015, as space becomes more tailored to institutional needs. However, the manner in which health sciences libraries develop and deliver services and collections will drastically change in the next decade. Libraries will continue to exist and will provide support for knowledge management and clinical trials, provide access to digital materials, and play a host of other roles that will enable libraries to emerge as institutional change agents. 相似文献
18.
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
19.
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
20.
Debasis?GangulyEmail authorView authors OrcID profile Gareth?J.?F.?Jones Aarón?Ramírez-de-la-Cruz Gabriela?Ramírez-de-la-Rosa Esaú?Villatoro-Tello 《Information Retrieval》2018,21(1):1-23
Automatic detection of source code plagiarism is an important research field for both the commercial software industry and within the research community. Existing methods of plagiarism detection primarily involve exhaustive pairwise document comparison, which does not scale well for large software collections. To achieve scalability, we approach the problem from an information retrieval (IR) perspective. We retrieve a ranked list of candidate documents in response to a pseudo-query representation constructed from each source code document in the collection. The challenge in source code document retrieval is that the standard bag-of-words (BoW) representation model for such documents is likely to result in many false positives being retrieved, because of the use of identical programming language specific constructs and keywords. To address this problem, we make use of an abstract syntax tree (AST) representation of the source code documents. While the IR approach is efficient, it is essentially unsupervised in nature. To further improve its effectiveness, we apply a supervised classifier (pre-trained with features extracted from sample plagiarized source code pairs) on the top ranked retrieved documents. We report experiments on the SOCO-2014 dataset comprising 12K Java source files with almost 1M lines of code. Our experiments confirm that the AST based approach produces significantly better retrieval effectiveness than a standard BoW representation, i.e., the AST based approach is able to identify a higher number of plagiarized source code documents at top ranks in response to a query source code document. The supervised classifier, trained on features extracted from sample plagiarized source code pairs, is shown to effectively filter and thus further improve the ranked list of retrieved candidate plagiarized documents. 相似文献