全文获取类型
收费全文 | 27688篇 |
免费 | 444篇 |
国内免费 | 35篇 |
专业分类
教育 | 20068篇 |
科学研究 | 2320篇 |
各国文化 | 312篇 |
体育 | 2025篇 |
综合类 | 37篇 |
文化理论 | 240篇 |
信息传播 | 3165篇 |
出版年
2022年 | 158篇 |
2021年 | 261篇 |
2020年 | 411篇 |
2019年 | 585篇 |
2018年 | 794篇 |
2017年 | 916篇 |
2016年 | 833篇 |
2015年 | 514篇 |
2014年 | 671篇 |
2013年 | 5564篇 |
2012年 | 668篇 |
2011年 | 723篇 |
2010年 | 576篇 |
2009年 | 560篇 |
2008年 | 635篇 |
2007年 | 611篇 |
2006年 | 540篇 |
2005年 | 488篇 |
2004年 | 463篇 |
2003年 | 425篇 |
2002年 | 459篇 |
2001年 | 490篇 |
2000年 | 466篇 |
1999年 | 457篇 |
1998年 | 266篇 |
1997年 | 290篇 |
1996年 | 318篇 |
1995年 | 274篇 |
1994年 | 280篇 |
1993年 | 252篇 |
1992年 | 359篇 |
1991年 | 365篇 |
1990年 | 394篇 |
1989年 | 379篇 |
1988年 | 350篇 |
1987年 | 303篇 |
1986年 | 316篇 |
1985年 | 374篇 |
1984年 | 319篇 |
1983年 | 331篇 |
1982年 | 250篇 |
1981年 | 261篇 |
1980年 | 236篇 |
1979年 | 297篇 |
1978年 | 285篇 |
1977年 | 248篇 |
1976年 | 206篇 |
1975年 | 178篇 |
1974年 | 153篇 |
1973年 | 186篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
111.
Danuta A. Nitecki 《Archival Science》2004,4(1-2):17-44
Evaluators of library programs have different perspectives on why to conduct an evaluation and also how to do so. The author
suggests that a minimal approach to conducting a library program evaluation is to prove that the program exists. But this
perspective has expanded to include different degrees of interest in the client and operations, culminating in a combined
focus that leads evaluators to conduct outcome assessments. The chapter includes speculation on what motivates managers to
undertake an evaluation, a review of some ways that library evaluations are conducted, and a discussion of several examples
of program evaluations. Though there are not single directives for undertaking a library program evaluation, there are a variety
of tools and advice to entice librarians to do more of them as a way to improve understanding the value of a library to its
clientele and in society. 相似文献
112.
Amanda Maple Carol Wright Robert Seeds 《Library Collections, Acquisitions, and Technical Services》2004,27(4):425-442
The issue of format duplication in academic library collections is increasingly complicated and perplexing in an environment of static or dwindling resources, soaring user expectations, dynamic access models, and inconsistent and changing publisher and vendor pricing structures. The problem is further complicated for libraries serving a university with multiple campus locations. This paper surveys recent investigative projects and highlights the work of a Duplicate Formats Task Force at Pennsylvania State University charged with determining the extent and nature of format duplication at that institution. 相似文献
113.
114.
E Diane Johnson Paul E Pancoast Joyce A Mitchell Chi-Ren Shyu 《Journal of the Medical Library Association》2004,92(4):438-444
PURPOSE: This study describes the system architecture and user acceptance of a suite of programs that deliver information about newly updated library resources to clinicians' personal digital assistants (PDAs). DESCRIPTION: Participants received headlines delivered to their PDAs alerting them to new books, National Guideline Clearinghouse guidelines, Cochrane Reviews, and National Institutes of Health (NIH) Clinical Alerts, as well as updated content in UpToDate, Harrison's Online, Scientific American Medicine, and Clinical Evidence. Participants could request additional information for any of the headlines, and the information was delivered via e-mail during their next synchronization. Participants completed a survey at the conclusion of the study to gauge their opinions about the service. RESULTS/OUTCOME: Of the 816 headlines delivered to the 16 study participants' PDAs during the project, Scientific American Medicine generated the highest proportion of headline requests at 35%. Most users of the PDA Alerts software reported that they learned about new medical developments sooner than they otherwise would have, and half reported that they learned about developments that they would not have heard about at all. While some users liked the PDA platform for receiving headlines, it seemed that a Web database that allowed tailored searches and alerts could be configured to satisfy both PDA-oriented and e-mail-oriented users. 相似文献
115.
116.
传媒经济学研究的历史、方法与范例 总被引:3,自引:0,他引:3
本文主要回顾了传媒经济学在西方的发展历程、研究方法以及不同时期的研究议题。传媒经济学是构建于不同的经济学理论和分析方法之上的应用性学科,它致力于研究经济和金融力量如何影响传媒体系和传媒组织。西方传媒经济学创建于20世纪50年代,至今已发展成为一个活跃的和跨学科研究领域。文章认为,西方传媒经济学的主要研究范例包括理论型、应用型和批评型范例;其研究方法可分为行业市场研究、公司研究和影响力研究。在介绍西方传媒经济学研究的同时,本文还简要回顾了传媒经济学在中国的兴起与发展。 相似文献
117.
118.
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
119.
Linda M Hartman Rebecca A Abromitis Alice B Kuller Barbara A Epstein 《Journal of the Medical Library Association》2005,93(2):271-277
OBJECTIVE: A staff development committee (SDC) was convened to implement staff development opportunities for an academic health sciences library system comprised of three separate facilities. The charge for the SDC was to: (1) develop programs to enhance workplace skills and personal growth, (2) communicate the availability of existing programs at the university and medical center, and (3) encourage the staff to participate in these opportunities. PROGRAM: The committee created goals and objectives and developed a survey designed to give staff the opportunity to provide input for this initiative. With an 80% response rate, the survey results were used to plan 15 events based on staff needs and preferences. First-year attendance for SDC-sponsored events was 459. Committee members served as liaisons for each event. Two forms were developed to facilitate event planning. A monthly announcement sheet, email reminders, and the library's local area network are used to communicate upcoming SDC events and encourage attendance. CONCLUSION: This approach can serve as a useful model for similar program planning in any organization. 相似文献
120.