全文获取类型
收费全文 | 3883篇 |
免费 | 55篇 |
国内免费 | 4篇 |
专业分类
教育 | 2794篇 |
科学研究 | 246篇 |
各国文化 | 67篇 |
体育 | 353篇 |
综合类 | 2篇 |
文化理论 | 60篇 |
信息传播 | 420篇 |
出版年
2022年 | 24篇 |
2021年 | 37篇 |
2020年 | 74篇 |
2019年 | 137篇 |
2018年 | 150篇 |
2017年 | 160篇 |
2016年 | 155篇 |
2015年 | 95篇 |
2014年 | 114篇 |
2013年 | 883篇 |
2012年 | 109篇 |
2011年 | 115篇 |
2010年 | 89篇 |
2009年 | 81篇 |
2008年 | 101篇 |
2007年 | 103篇 |
2006年 | 86篇 |
2005年 | 88篇 |
2004年 | 89篇 |
2003年 | 61篇 |
2002年 | 73篇 |
2001年 | 50篇 |
2000年 | 54篇 |
1999年 | 54篇 |
1998年 | 34篇 |
1997年 | 47篇 |
1996年 | 41篇 |
1995年 | 47篇 |
1994年 | 30篇 |
1993年 | 34篇 |
1992年 | 46篇 |
1991年 | 49篇 |
1990年 | 30篇 |
1989年 | 30篇 |
1988年 | 38篇 |
1987年 | 36篇 |
1986年 | 20篇 |
1985年 | 29篇 |
1984年 | 37篇 |
1983年 | 37篇 |
1982年 | 28篇 |
1981年 | 26篇 |
1980年 | 27篇 |
1979年 | 26篇 |
1978年 | 28篇 |
1977年 | 23篇 |
1976年 | 25篇 |
1975年 | 13篇 |
1974年 | 16篇 |
1969年 | 13篇 |
排序方式: 共有3942条查询结果,搜索用时 46 毫秒
1.
2.
Lewis Elton 《Higher Education Quarterly》1992,46(3):252-268
It is argued that, basically, academics engage in three activities: teaching, research and scholarship, and that the activity of scholarship must be recognised and separately funded. The concept of scholarship is derived from its historical roots, according to which it supports both teaching and research, but is extended to support all activities in which academics engage. This makes it possible to develop an expanding system of higher education in which all academic activities are appropriately recognised and rewarded and which can operate with significantly lower unit costs than has been the case in the past. However, the need to provide funding for scholarship puts a lower bound to acceptable unit costs. 相似文献
3.
Objective: To determine whether information retrieval might be enhanced by making each component of a structured abstract a separately searchable field. Design: Parallel searches on records arranged so that each abstract could either be searched in its entirety or as a collection of structured fields. Subjects: Records about cardiovascular disease downloaded from MEDLINE and tested against clinical questions derived from a concurrent survey of CD-ROM use in three health science libraries. Intervention: The investigators identified terms used to structure abstracts on MEDLINE and imported the abstracts into an Idealist database prior to searching using keywords from clinical questions. Measurements and main results: recall and precision rates are given for each question in the ‘structured’ and the ‘unstructured’ set of records. Conclusions: Use of structured, rather than unstructured, abstracts improves precision at the ex-pense of recall and places heavier demands upon the searcher’s skill in choosing the correct fields within the abstract to search. Further investigation requires more accurate simulation of MEDLINE software that utilizes features such as MeSH terms, explode, facilities and delimiters. 相似文献
4.
5.
Post-war growth of higher education has attracted the interest of national governments. They are properly concerned with higher education's contribution to economic success and equity, and the efficient and effective use of public funds. They can intervene by means of legislation (which is unwieldy), exhortation (which is ineffective), or funding incentives. Funding councils must operate within a social and political context which determines the balance between planning and the market, central and local direction, public and private funding. They have only four strategies to choose from: deficiency-, formula-, contract-, and core-funding. The first was nearly fatal; the last is the preferred option for the future.
There are two issues: the merging of the two funding councils (PCFC and UFC), and the ending of the binary system. The first could produce a welcome single guiding intelligence for UK higher education, and economies of scale. The second raises the question of the funding of fundamental research. The merging of PCFC and UFC and the reorganisation of research-funding is a two-headed nettle. It must be grasped soon. 相似文献
There are two issues: the merging of the two funding councils (PCFC and UFC), and the ending of the binary system. The first could produce a welcome single guiding intelligence for UK higher education, and economies of scale. The second raises the question of the funding of fundamental research. The merging of PCFC and UFC and the reorganisation of research-funding is a two-headed nettle. It must be grasped soon. 相似文献
6.
7.
8.
9.
Mark Lewis 《中国传媒科技》2005,(10)
虚拟是今天存储业界的热门话题,对数据的管理就是对存储的管理。大小客户如何利用虚拟存储解决方案并通过存储软件和存储硬件自身内部的分区来最大程度地利用自身的存储基础架构呢?与此同时,客户们仍在问究竟什么是虚拟存储呢?如何实现这些技术呢?企业自身的基础架构是否适合实现存储虚拟化呢? 相似文献
10.
This research analyzed a dataset of academic libraries' posts on Facebook. It applied a text and data analytics approach to a dataset collected from the Facebook posts of academic libraries at the top 100 English-speaking universities, as listed by the 2014 Shanghai World University Rankings. The dataset is from a two-year posting history of 18,333 unique posts, 113,621 likes, and 3401 comments. Less than a quarter of the libraries had more than 2000 post-related likes, and only seven received more than 100 comments on their postings. Content analysis identified the most prevalent single word (unigrams), bigrams (two-word sequences), and trigrams (three-word sequences) in high and low engagement content. Semantic analysis identified the semantic categories for posts with high and low engagement. The findings can assist academic libraries in their social media strategies for engagement, marketing, and visibility. 相似文献