全文获取类型
收费全文 | 23653篇 |
免费 | 381篇 |
国内免费 | 330篇 |
专业分类
教育 | 15231篇 |
科学研究 | 3684篇 |
各国文化 | 133篇 |
体育 | 2013篇 |
综合类 | 499篇 |
文化理论 | 156篇 |
信息传播 | 2648篇 |
出版年
2022年 | 189篇 |
2021年 | 344篇 |
2020年 | 362篇 |
2019年 | 390篇 |
2018年 | 528篇 |
2017年 | 471篇 |
2016年 | 486篇 |
2015年 | 560篇 |
2014年 | 774篇 |
2013年 | 3162篇 |
2012年 | 944篇 |
2011年 | 928篇 |
2010年 | 805篇 |
2009年 | 713篇 |
2008年 | 760篇 |
2007年 | 872篇 |
2006年 | 832篇 |
2005年 | 756篇 |
2004年 | 532篇 |
2003年 | 589篇 |
2002年 | 632篇 |
2001年 | 546篇 |
2000年 | 498篇 |
1999年 | 411篇 |
1998年 | 219篇 |
1997年 | 223篇 |
1996年 | 235篇 |
1995年 | 208篇 |
1994年 | 158篇 |
1993年 | 161篇 |
1992年 | 236篇 |
1991年 | 236篇 |
1990年 | 238篇 |
1989年 | 263篇 |
1988年 | 211篇 |
1987年 | 226篇 |
1986年 | 222篇 |
1985年 | 252篇 |
1984年 | 224篇 |
1983年 | 211篇 |
1982年 | 176篇 |
1981年 | 168篇 |
1980年 | 157篇 |
1979年 | 245篇 |
1978年 | 190篇 |
1977年 | 180篇 |
1976年 | 149篇 |
1975年 | 132篇 |
1974年 | 151篇 |
1973年 | 132篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
大学物理教学应注重学生创新思维能力的培养 总被引:3,自引:0,他引:3
郭小花 《天水师范学院学报》2006,26(5):116-118
大学物理教学应以教授物理思想方法为主线,提高学生的学习兴趣,培养学生发现、解决问题的能力;以实验课程教学改革为契机,培养学生的实际动手能力;充分利用多媒体技术,发展学生思维能力等方面改革,以促进学生的个性发展和创新能力的提高,使大学物理教学成为学生创新思维能力培养的重要阵地。 相似文献
42.
43.
44.
45.
新的教育形势已对学校的生存和发展提出了严峻的挑战.校长是学校发展的引路人,做好校长培训,提高校长队伍的整体素质是我们的责任和义务.为此,我们不断学习、实践、反思,积极探索适合我区不同层次校长实际需求的培训方法和途径. 相似文献
46.
47.
Martin R?tteler 《Informatik - Forschung und Entwicklung》2006,55(3):3-20
Quantum algorithms are a field of growing interest within the theoretical computer science as
well as the physics community. Surprisingly, although the number of researchers working on the subject
is ever-increasing, the number of quantum algorithms found so far is quite small. In fact, the task of
designing new quantum algorithms has been proven to be extremely difficult. In this paper we give an overview
of the known quantum algorithms and briefly describe the underlying ideas. Roughly, the algorithms presented
are divided into hidden subgroup type algorithms and in amplitude amplification type algorithms. While
the former deal with problems of group-theoretical nature and have the promise to yield strong separations
of classical and quantum algorithms, the latter have been proved to be a prolific source of algorithms
in which a polynomial speed-up as compared to classical algorithms can be achieved. We also discuss
quantum algorithms which do not fall under these two categories and give a survey of techniques of
general interest in quantum computing such as adiabatic computing, lower bounds for quantum algorithms,
and quantum interactive proofs. 相似文献
48.
近日,笔者在常熟萧氏“晨星楼”藏品中发现一册《彭刚直公诗稿八卷》,封面上不仅有萧益友的题跋,而且书内夹有彭玉麟的一批手稿。 相似文献
49.
Medicine has made increasing use of meta-analysis, largely as a quantitative procedure for combining results of clinical trials. Meta-analysis begins with a comprehensive review of the literature. The next step is a systematic analysis of the quality and content of each study. Finally, results are combined statistically and conclusions are drawn from this new overview of the data. This paper presents a brief historical perspective on the use of meta-analysis in medicine with emphasis on the medical library. The authors conclude that in the future, medical librarians will play a significant role in the application of this useful technique. 相似文献
50.
Chaos theory, informational needs, and natural disasters 总被引:2,自引:0,他引:2
Timothy L. Sellnow Matthew W. Seeger Robert R. Ulmer 《Journal of Applied Communication Research》2002,30(4):269-292
This study applies chaos theory to a system-wide analysis of crisis communication in a natural disaster. Specifically, we analyze crisis communication during the 1997 Red River Valley flood in Minnesota and North Dakota. This flood, among the worst in modern American history, consumed entire metropolitan areas, displacing thousands of people. The conditions and decisions leading to the disaster, and the subsequent reactions are retraced. Communication related to river crest predictions (fractals), the shock at the magnitude of the crisis (cosmology episode), novel forms of reorganizing (self-organization), and agencies that aided in establishing a renewed order (strange attractors) are evaluated. Ultimately, we argue that preexisting sensemaking structures favoring rationalized, traditional views of a complex system led officials to make inappropriately unequivocal predictions and ultimately diminished the effectiveness of the region's crisis communication and planning. 相似文献