全文获取类型
收费全文 | 18139篇 |
免费 | 96篇 |
国内免费 | 7篇 |
专业分类
教育 | 13589篇 |
科学研究 | 1766篇 |
各国文化 | 67篇 |
体育 | 739篇 |
综合类 | 9篇 |
文化理论 | 443篇 |
信息传播 | 1629篇 |
出版年
2022年 | 32篇 |
2021年 | 65篇 |
2020年 | 93篇 |
2019年 | 147篇 |
2018年 | 2400篇 |
2017年 | 2350篇 |
2016年 | 1824篇 |
2015年 | 277篇 |
2014年 | 320篇 |
2013年 | 1252篇 |
2012年 | 430篇 |
2011年 | 957篇 |
2010年 | 1042篇 |
2009年 | 595篇 |
2008年 | 836篇 |
2007年 | 1364篇 |
2006年 | 185篇 |
2005年 | 541篇 |
2004年 | 611篇 |
2003年 | 485篇 |
2002年 | 232篇 |
2001年 | 143篇 |
2000年 | 143篇 |
1999年 | 119篇 |
1998年 | 94篇 |
1997年 | 101篇 |
1996年 | 98篇 |
1995年 | 67篇 |
1994年 | 74篇 |
1993年 | 55篇 |
1992年 | 92篇 |
1991年 | 86篇 |
1990年 | 61篇 |
1989年 | 61篇 |
1988年 | 56篇 |
1987年 | 50篇 |
1986年 | 52篇 |
1985年 | 60篇 |
1984年 | 57篇 |
1983年 | 45篇 |
1982年 | 47篇 |
1981年 | 46篇 |
1980年 | 31篇 |
1979年 | 48篇 |
1978年 | 39篇 |
1977年 | 29篇 |
1976年 | 25篇 |
1974年 | 29篇 |
1972年 | 26篇 |
1971年 | 28篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
171.
David Burleigh 《Publishing Research Quarterly》2017,33(4):380-391
The library channel is often underappreciated as a key part of a publisher’s business strategy. In an age where publishers are constantly seeking new revenue and marketing opportunities, presence in the library—digitally—can yield significant growth. This paper examines the library channel, its business model based on library lending, the performance of eBooks and audiobooks across all subjects, and consumer reading behavior. Digital Book Clubs, a relatively new phenomenon, are also defined and illustrated with examples demonstrating the library’s valuable role in increasing discoverability and ultimately sales. 相似文献
172.
173.
174.
This paper proves that social media use can contribute in important ways to employability outcomes. Specifically, results from a survey of 196 recent graduate students in China indicate that social media use is positively related to employability skills. Internship effectiveness serve as a mediating mechanism through which social media use affects employability skills. Zhongyong has a moderating effect on the social media use-internship effectiveness relationship. In addition to the direct moderating effect, Zhongyong is found to moderate the indirect relationship between social media use and employability skills. We discuss implications of these results for research and practice. 相似文献
175.
176.
177.
E. P. Semenyuk 《Scientific and Technical Information Processing》2017,44(1):1-14
At the turn of the 21st century a methodological analysis of the planetary development of civilization became a topical issue in world science. Such an analysis is based on a framework of categorical concepts adopted for active use in globalistics, namely, the biosphere, sociosphere, technosphere, noosphere, and infosphere. The given context provides a new perspective on the phenomenon of information and informatics, with the latter having experienced increasing demands as a popular scientific discipline in the field of information. In the contemporary setting, these phenomena can be adequately evaluated only in connection with the above concepts. 相似文献
178.
179.
Susan Dente Ross 《广播与电子媒介杂志》2013,57(2):254-270
Video market entry options available to telephone companies under the Telecommunications Act of 1996 have First Amendment implications that will affect the constitutional value of telephone video. These entry options impose regulatory constraints upon providers and differ in potentials for provider speech, speaker access, and content diversity. The author concludes that the Act's open video system option best advances First Amendment interests in increased diversity of and access to speech. 相似文献
180.
This article is the third in a series reporting on the changes in attitudes and interests‐‐mainly with respect to physics‐of several hundred students as they proceed through the Danish upper secondary school (Gymnasium). It concentrates on the results of the final investigation which took place shortly before the students leave the school. 相似文献