全文获取类型
收费全文 | 3441篇 |
免费 | 47篇 |
国内免费 | 27篇 |
专业分类
教育 | 2441篇 |
科学研究 | 351篇 |
各国文化 | 25篇 |
体育 | 336篇 |
综合类 | 70篇 |
文化理论 | 38篇 |
信息传播 | 254篇 |
出版年
2023年 | 22篇 |
2022年 | 74篇 |
2021年 | 95篇 |
2020年 | 137篇 |
2019年 | 183篇 |
2018年 | 211篇 |
2017年 | 213篇 |
2016年 | 174篇 |
2015年 | 172篇 |
2014年 | 183篇 |
2013年 | 601篇 |
2012年 | 155篇 |
2011年 | 161篇 |
2010年 | 130篇 |
2009年 | 122篇 |
2008年 | 114篇 |
2007年 | 107篇 |
2006年 | 89篇 |
2005年 | 71篇 |
2004年 | 64篇 |
2003年 | 60篇 |
2002年 | 45篇 |
2001年 | 34篇 |
2000年 | 24篇 |
1999年 | 14篇 |
1998年 | 19篇 |
1997年 | 15篇 |
1996年 | 21篇 |
1995年 | 14篇 |
1994年 | 17篇 |
1993年 | 12篇 |
1992年 | 10篇 |
1991年 | 11篇 |
1990年 | 8篇 |
1989年 | 10篇 |
1988年 | 9篇 |
1987年 | 6篇 |
1986年 | 4篇 |
1985年 | 5篇 |
1984年 | 6篇 |
1983年 | 4篇 |
1981年 | 5篇 |
1979年 | 6篇 |
1978年 | 4篇 |
1977年 | 5篇 |
1976年 | 7篇 |
1970年 | 4篇 |
1885年 | 3篇 |
1882年 | 6篇 |
1880年 | 5篇 |
排序方式: 共有3515条查询结果,搜索用时 15 毫秒
41.
成人教育质量监控体系中政府机制的失调及其对策 总被引:1,自引:0,他引:1
在成人教育质量的监控体系中,政府的作用是必不可少的。通过分析政府在成人教育质量监控机制中失调的表现及其原因,进而提出完善政府监控机制的主要措施为:加强制度建设,完善相应的配套措施;创新贯彻手段,保障制度的有效实施;注重绩效评价,建立完整的评价制度;确保价值方向,整合多元的价值取向。 相似文献
42.
Elba Ramos López 《Prospects》1989,19(1):49-55
Previously University Director of Student Welfare and Students' Concerns at that university. Has also worked as Vocational Counsellor and teacher at several universities in Peru. Is interested in psychological research and in vocational and psychological guidance. 相似文献
43.
论财政体制改革对高等教育的影响 总被引:1,自引:0,他引:1
10多年来,我国财政体制逐步向公共财政转变,一是财政管理体制发生了变化,二是建立健全了预算管理制度。财政体制改革各项措施的实施,对高等教育产生了极大的影响,主要体现在:财政投入责任从中央转移到地方政府;高等教育投入机制出现"缺位";财政性高教经费投入不足,历史欠帐多等方面。 相似文献
44.
Pedro Gutiérrez Bueno wrote two editions of a chemistry textbook between 1788 and 1802. The paper offers a comparative view
of both editions taking into account Gutiérrez Bueno’s biography, his intended audience and the changes related to the so-called
chemical revolution. Some conclusions are at odds with common images about scientific revolutions and the role of textbooks
in science. The analysis aims to shed some light on the multiple historical forces shaping textbooks and the way in which
scientific change is assimilated by their writers.
This research was partially supported by the program BHA2002-04611-CO3-02 相似文献
45.
Antonio Gómez Skarmeta Pedro García López Jesús Egea Payá José Meseguer Navarro Tomás Jiménez García 《Academic Questions》1994,8(1):91-92
Books and articles of academic interest 相似文献
46.
This paper gives background information on early childhood services in Ireland and presents the results of a survey of the preschool experiences of 1065 children. The results of the survey suggest that the majority of children experienced some form of early childhood service before starting school. The most common service was a playgroup although a significant proportion of the children had experienced home‐based care with a relative or family day care provider. The implications of the findings for the development of a policy on early childhood services are discussed. 相似文献
47.
Joaquín Martínez-Torregrosa Rafael López-Gay Albert Gras-Martí 《Science & Education》2006,15(5):447-462
Despite its frequent use, there is little understanding of the concept of differential among upper high school and undergraduate
students of physics. As a first step to identify the origin of this situation and to revert it, we have done a historic and
epistemological study aimed at clarifying the role and the meaning of the differential in physics and at improving curricular
and teaching models in the sense of Gilbert et al. (Gilbert J.K., Boulter C., & Rutherford, M.: 1998a, International Journal of Science Education 20(1), 83–97, Gilbert J.K., Boulter C., & Rutherford, M.: 1998b, International Journal of Science Education 20(2), 187–203). We describe the contributions of Leibniz and Cauchy and stress their shortcomings, which are overcome by the
alternative definition proposed by the French mathematician Fréchet, dating from early 20th century. As a result of this study,
we answer to some fundamental questions related to a proper understanding of the differential in physics education (for 17–19 years
old students). 相似文献
48.
The Inductive Query By Example (IQBE) paradigm allows a system to automatically derive queries for a specific Information Retrieval System (IRS). Classic IRSs based on this paradigm [Smith, M., & Smith, M. (1997). The use of genetic programming to build Boolean queries for text retrieval through relevance feedback. Journal of Information Science, 23(6), 423–431] generate a single solution (Boolean query) in each run, that with the best fitness value, which is usually based on a weighted combination of the basic performance criteria, precision and recall. 相似文献
49.
V型知识地图在企业知识管理中的应用研究 总被引:2,自引:0,他引:2
基于目前知识地图在企业知识管理应用中普遍存在的一些问题,提出了V型知识地图的设计方法、应用模型和技术架构,试图通过V型知识地图开放式的框架体系,启发式的知识构建,促进组织中知识的应用与创新,为企业知识管理提供新的解决之道。 相似文献
50.