全文获取类型
收费全文 | 1787篇 |
免费 | 35篇 |
专业分类
教育 | 1291篇 |
科学研究 | 113篇 |
各国文化 | 27篇 |
体育 | 163篇 |
综合类 | 1篇 |
文化理论 | 16篇 |
信息传播 | 211篇 |
出版年
2022年 | 17篇 |
2021年 | 28篇 |
2020年 | 42篇 |
2019年 | 72篇 |
2018年 | 94篇 |
2017年 | 93篇 |
2016年 | 73篇 |
2015年 | 50篇 |
2014年 | 64篇 |
2013年 | 388篇 |
2012年 | 66篇 |
2011年 | 55篇 |
2010年 | 40篇 |
2009年 | 43篇 |
2008年 | 56篇 |
2007年 | 39篇 |
2006年 | 34篇 |
2005年 | 37篇 |
2004年 | 42篇 |
2003年 | 33篇 |
2002年 | 29篇 |
2001年 | 23篇 |
2000年 | 24篇 |
1999年 | 22篇 |
1998年 | 16篇 |
1997年 | 14篇 |
1996年 | 13篇 |
1995年 | 12篇 |
1994年 | 10篇 |
1993年 | 15篇 |
1992年 | 10篇 |
1991年 | 13篇 |
1990年 | 12篇 |
1989年 | 15篇 |
1988年 | 29篇 |
1987年 | 14篇 |
1986年 | 13篇 |
1985年 | 13篇 |
1984年 | 9篇 |
1982年 | 11篇 |
1981年 | 11篇 |
1980年 | 7篇 |
1979年 | 8篇 |
1978年 | 6篇 |
1977年 | 7篇 |
1976年 | 11篇 |
1974年 | 9篇 |
1973年 | 7篇 |
1972年 | 10篇 |
1968年 | 6篇 |
排序方式: 共有1822条查询结果,搜索用时 8 毫秒
111.
Several statistical sampling methods are evaluated for estimating the total number of relevant documents in a collection for a given query. The total number of relevant documents is needed in order to compute recall values for use in evaluating document retrieval systems. The simplest method considered uses simple random sampling to estimate the number of relevant documents. Another type of random sampling, which assigns unequal selection probabilities to the individual documents in the collection, is also investigated. An alternative approach considered uses curve fitting and extrapolation, where a smooth curve is developed which relates precision to document rank. Another curve relates a function of precision to the query-document score. In either case, the curve is extrapolated to the total number of documents in order to estimate the number of relevant documents. Empirical comparisons are made of all three methods. 相似文献
112.
113.
114.
This paper demonstrates how the application of New Public Management (NPM) and the accompanying rise of academic capitalism
in allocating research funds in the German academic field have interacted with a change from federal pluralism to a more stratified
system of universities and departments. From this change, a tendency to build cartel-like structures of allocating symbolic
capital resulting in oligopolistic structures of appropriating research funds has emerged. This macro level structure is complemented
by the strengthening of the traditional oligarchic structures of research, carried out by an increasing number of assistants
under the direction of a professor on the meso level. The outcome of this institutional setting is a significant gap between
the appropriation of research funds according to the allocation of symbolic capital and the production of knowledge in publications.
The application of NPM therefore needs to be explained more as a result of the normative pressure of a globally established
model of “rational” administration, and less as a result of its functional effectiveness. This is demonstrated by an empirical
analysis with simple and multiple regressions using data on the allocation of research grants and publication records of German
chemistry departments. 相似文献
115.
Christian Rittelmeyer 《Zeitschrift für Erziehungswissenschaft》2013,16(3):217-231
Transfer research examines how artistic activities can have an impact outside of the realm of art itself. The article concludes that this research can be carried out in a meaningful way, only within the framework of a comprehensive theory of aesthetic education. This theory would encompass the structural analysis of artistic activity, as well as biographical reports about artistic experiences. The elucidation of the concepts or themes relevant to the theory would include the notion of aesthetic experience, the understanding of immediate, aesthetic experiences, the analysis of artistic processes, and the outcomes of scientifically evaluated applications of aesthetic education. 相似文献
116.
117.
118.
Richard Tewksbury Alexis Miller Matthew T. DeMichele 《Journal of Criminal Justice Education》2013,24(2):227-243
Traditionally, academic criminologists have addressed two audiences—other academics and students—while largely ignoring other segments of society. Frequently neglected is attention to educating the public. This paper uses a random sample of American Society of Criminology (ASC) members to measure the level of interaction with and attitudes toward criminologists working with the media. Findings suggest that most criminologists have participated in an isolated incidence of working with the media, tend to be generally satisfied with this experience, and perceive working with the media as a worthwhile endeavor for criminologists. 相似文献
119.
David W. Chapman Marilynn M. Jewell James L. Miller Jr. 《Community College Journal of Research & Practice》2013,37(2):107-119
Prospective two‐year college students often lack adequate information on the range of educational alternatives available to them. Increasingly, state level agencies are playing a role in responding to that need. This article reports on a. national study of state two‐year college agencies to determine the extent and comprehensiveness of the postsecondary educational information they provide to students. Results indicate that most states have information they send to prospective students, but it varies widely in quality and often overlooks information students say they want to know. States with model information are identified. 相似文献
120.