全文获取类型
收费全文 | 24785篇 |
免费 | 430篇 |
国内免费 | 562篇 |
专业分类
教育 | 15873篇 |
科学研究 | 5368篇 |
各国文化 | 156篇 |
体育 | 1344篇 |
综合类 | 991篇 |
文化理论 | 25篇 |
信息传播 | 2020篇 |
出版年
2024年 | 7篇 |
2023年 | 133篇 |
2022年 | 431篇 |
2021年 | 699篇 |
2020年 | 816篇 |
2019年 | 629篇 |
2018年 | 535篇 |
2017年 | 462篇 |
2016年 | 354篇 |
2015年 | 702篇 |
2014年 | 1850篇 |
2013年 | 2072篇 |
2012年 | 2027篇 |
2011年 | 1773篇 |
2010年 | 1394篇 |
2009年 | 1567篇 |
2008年 | 1675篇 |
2007年 | 1806篇 |
2006年 | 1623篇 |
2005年 | 1423篇 |
2004年 | 949篇 |
2003年 | 893篇 |
2002年 | 690篇 |
2001年 | 501篇 |
2000年 | 264篇 |
1999年 | 133篇 |
1998年 | 115篇 |
1997年 | 47篇 |
1996年 | 55篇 |
1995年 | 12篇 |
1994年 | 15篇 |
1993年 | 11篇 |
1992年 | 21篇 |
1991年 | 5篇 |
1990年 | 6篇 |
1989年 | 5篇 |
1988年 | 3篇 |
1987年 | 3篇 |
1986年 | 1篇 |
1985年 | 11篇 |
1984年 | 10篇 |
1983年 | 9篇 |
1982年 | 8篇 |
1981年 | 6篇 |
1980年 | 2篇 |
1979年 | 3篇 |
1978年 | 13篇 |
1977年 | 6篇 |
1976年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
131.
中国图书馆学专业教育层次化探讨 总被引:3,自引:0,他引:3
当前,图书馆学专业教育面临着专业萎缩、生源不足、学习动力不足等危机。针对这些问题.本文提出了进行中国图书馆学专业教育层次化改革的设想,同时提议教育部图书馆学学科指导委员会的作用,实施图书馆从业人员资格认证制度。 相似文献
132.
John Roberts 《Archival Science》2005,5(2-4):185-201
Both macroappraisal and the Australian records continuum-based DIRKS methodology have been influential in the New Zealand
debate on appraisal in recent years. The primary influence of macroappraisal has been in the area of prioritisation of appraisal
work. This paper considers New Zealand thinking on prioritisation, and the influences of risk management and functional analysis
on this issue. A lack of agreement on the purpose of appraisal in the professional literature is noted, and some personal
suggestions are offered on a model taking elements from macroappraisal and other methodologies. 相似文献
133.
目前,工程技术人才国际化认证已成为很多国家人才战略规划的重要组成部分。如何根据国情选择性实施工程技术人才的国际认证体系,对于推进我国工程强国战略有重要的意义。课题研究对工程技术人才国际认证体系及英美德日四个工程强国认证状况进行了系统梳理,深入分析国际工程联盟IEA旗下的国际工程师认证IPEA、国际工程技师认证IETA、亚太工程师认证APEC、国际工程技术认证AIET四大工程技术专业人才认证体系及欧洲工程师认证体系EUR-ING的建立背景、认证程序及认证规范。同时,对美国、欧洲、英国、德国、日本及俄罗斯工程技术专业人才国际认证状况进行了深入调查。从比较的视角,对我国工程专业技术人才国际化认证中面对的挑战和机遇进行剖析,提出我国工程技术专业人才国际认证分步实施的思路及发展蓝图:在执行高等工程教育国际认证华盛顿协议、悉尼协议及都柏林协议的基础上,开展IEA旗下IPEA、IETA和AIET三个工程技术人才的国际化认证。首先从世界一流目标高校及国有大中型企业开始进行国际认证,其次,进一步开启我国地方特色院校及特色产业国际工程技术人才认证。 相似文献
134.
Black-dyed artefacts are found in museums worldwide, many produced using an iron-tannate compound. Deterioration of iron-tannate dyed artefacts is an international preservation issue: in New Zealand the deterioration of paru (iron-tannate) dyed Māori textiles is widespread. This article reports experimental work testing the efficacy of sodium alginate, a consolidant developed for deteriorated paru-dyed muka (fibre from harakeke; Phormium tenax). The colour stability, strength retention, and acidity of paru-dyed muka consolidated with sodium alginate (0.25, 0.5, and 1% w/v in water) was tested pre- and post-artificial light ageing. This study found that sodium alginate had no negative effect on paru-dyed muka and in some cases provided benefit. Interestingly, the colour of paru-dyed muka is substantially more stable in UV-filtered light than previously recognised. Also microfading results were in agreement with visual assessments of colour change at 1 Mlux hour exposure, providing confidence in this relatively new technique to assess colour change. 相似文献
135.
Steve H. Ching 《The Journal of Academic Librarianship》2018,44(2):196-206
The digital shift has provided easy access to academic library users, and yet, the usage of archival collections continues to be low. At the same time, the need for innovation in library services for cultural heritage scholarship and its advancement is emerging. This paper outlines a library-led service-learning program that connects students with lighthouse artifacts, archival collections, scholars in global academia, and wider communities. Student engagement cases are provided to illustrate the way in which the librarian utilizes the Framework of Information Literacy for Higher Education by ACRL to work closely with students. These cases also demonstrate how students can contribute to knowledge creation and preservation efforts for a specific cultural heritage topic that is not static, but which keeps receiving new contributions or additions to the depository. Thus, this paper is an answer to the ACRL's call for pilot projects to be assessed and shared with the wider community of academic librarians and support staff. It also builds on emerging roles for academic libraries like engaged learning. Librarians must move beyond simply seeing themselves as partners. Instead, librarians should see themselves as prime facilitators that co-create and co-develop cultural heritage research and historical projects by connecting actors and resources more effectively than any single actor can do alone. 相似文献
136.
Previous studies have shown that weeding a library collection benefits patrons and increases circulation rates. However, the time required to review the collection and make weeding decisions presents a formidable obstacle. This study empirically evaluated methods for automatically classifying weeding candidates. A data set containing 80,346 items from a large-scale weeding project running from 2011 to 2014 at Wesleyan University was used to train six machine learning classifiers to predict a weeding decision of either ‘Keep’ or ‘Weed’ for each candidate. The study found statistically significant agreement (p?=?0.001) between classifier predictions and librarian judgments for all classifier types. The naive Bayes and linear support vector machine classifiers had the highest recall (fraction of items weeded by librarians that were identified by the algorithm), while the k-nearest-neighbor classifier had the highest precision (fraction of recommended candidates that librarians had chosen to weed). The variables found to be most relevant were: librarian and faculty votes for retention, item age, and the presence of copies in other libraries. 相似文献
137.
John Andrew Ouligian 《Public Library Quarterly》2018,37(2):127-138
ABSTRACTThe Harwood Institute arrived in Youngstown, Ohio, in 1999; and today, over 18 years later, its teachings have made a profound effect upon the city. The Youngstown Public Library, through the leadership of Carlton Sears and Heidi Daniel, has wholeheartedly embraced the methods and ideology of the Harwood Institute, helping to reinvigorate and power a city working its way back to prosperity. 相似文献
138.
COUNTER是规范网络化电子资源使用统计报告数据处理、审核和提交的国际化标准,是图书馆电子资源使用量统计和评估的核心要素。目前COUNTER已经发布了最新版本R5,了解R5的新特性及与之前版本的不同对于图书馆的电子资源统计工作具有重要意义。本文拟从COUNTERR5的报告设置、报告的指标类型、数据类型、访问类型和其他完善报告的属性来解析R5,同时介绍R5对SUSHI收割的影响、"持续维护"的概念、R5发布对图书馆的影响和R5实施的重要时间节点,同时也对R5较之R4的发展和不同进行了比较和分析。COUNTERR5的主要关注点是一致性、清晰性和简单性,较之COUNTERR4有了明显的完善,同时包含了持续的维护过程,允许对代码进行更新而不必再引入一个全新的版本,解决了版本升级会对供应商和图书馆带来的各种时间和人员成本的影响。 相似文献
139.
Franklin J. Boster Rain Wuyu Liu Ying Cheng Wonkyung Kim Sonia Jawaid Shaikh 《Communication Studies》2018,69(1):4-22
Stickiness refers to the set of persuasive message properties: simple, unexpected, concrete, credible, emotional, and stories (SUCCES). Heath and Heath (2007) argue that a sticky message is expected to be more memorable and hence more persuasive than a non-sticky message. A 2 (sticky v. non-sticky message) x 3 (pretest v. posttest v. delayed test) longitudinal experiment is employed to examine the persuasiveness of sticky messages on applying sunscreen. Results of a mixed model analysis of variance show that the sticky message produces attitudes and behaviors more favorable to the message recommendation than the non-sticky message. Specifically, a time × message induction non-additive effect was found, which sustained only in the sticky message condition across time. Despite this interesting effect, its explanation remains elusive. 相似文献
140.