全文获取类型
收费全文 | 17086篇 |
免费 | 207篇 |
国内免费 | 13篇 |
专业分类
教育 | 11563篇 |
科学研究 | 2093篇 |
各国文化 | 372篇 |
体育 | 1262篇 |
综合类 | 7篇 |
文化理论 | 114篇 |
信息传播 | 1895篇 |
出版年
2021年 | 180篇 |
2020年 | 243篇 |
2019年 | 341篇 |
2018年 | 496篇 |
2017年 | 491篇 |
2016年 | 464篇 |
2015年 | 291篇 |
2014年 | 434篇 |
2013年 | 2901篇 |
2012年 | 376篇 |
2011年 | 410篇 |
2010年 | 349篇 |
2009年 | 337篇 |
2008年 | 441篇 |
2007年 | 384篇 |
2006年 | 336篇 |
2005年 | 306篇 |
2004年 | 344篇 |
2003年 | 238篇 |
2002年 | 235篇 |
2001年 | 324篇 |
2000年 | 359篇 |
1999年 | 321篇 |
1998年 | 171篇 |
1997年 | 205篇 |
1996年 | 176篇 |
1995年 | 134篇 |
1994年 | 158篇 |
1993年 | 147篇 |
1992年 | 281篇 |
1991年 | 252篇 |
1990年 | 253篇 |
1989年 | 279篇 |
1988年 | 234篇 |
1987年 | 214篇 |
1986年 | 213篇 |
1985年 | 258篇 |
1984年 | 199篇 |
1983年 | 204篇 |
1982年 | 157篇 |
1981年 | 149篇 |
1980年 | 147篇 |
1979年 | 231篇 |
1978年 | 151篇 |
1977年 | 145篇 |
1976年 | 127篇 |
1975年 | 124篇 |
1974年 | 144篇 |
1973年 | 132篇 |
1971年 | 112篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
142.
143.
144.
145.
S J Muncer B S Gorman S Gorman D Bibel 《British journal of educational technology : journal of the Council for Educational Technology》1986,17(1):5-10
Previous attempts to examine the effects of different types of text format on reading have focused on the improvement of reading. The present study investigated the effect of using a text format that might be predicted to disrupt reading. In this study 56 individuals were presented with reading material presented in right-justified format and in'ragged'uneven line format. Subjects performed significantly worse on right-justified material. Subjects who were classified as good readers on the basis of a pretest were more affected than poor readers. It is suggested that this may result from differences in the reading style of good and poor readers. 相似文献
146.
147.
A. N. Gurov Yu. G. Goncharova G. B. Bubyakin 《Scientific and Technical Information Processing》2016,43(2):88-94
The concept of “open access” to scientific and teaching information has become one of the specific forms of the worldwide trend towards the formation of global interactive knowledge. This paper presents the basic information on open access (OA) to scientific and teaching information, its current status, financing options, problems and prospects of development, and the participation of Russia in this process. 相似文献
148.
149.
In light of recent theories of meaningful media that suggest a host of psychological benefits, the present study uniquely extends the boundaries of the effects of reality TV from simply offering pleasure, diversion, and amusement to its viewers to also providing deep insight and meaning. In particular, a between-subjects experiment (N = 143) examined differences in affective, cognitive, and motivational responses to lifestyle transforming versus game based reality programs. Findings indicate that lifestyle transforming reality TV produced stronger feelings of elevation and perceptions of the program as moving and thought-provoking than game reality TV, which in turn increased motivations for altruism. Avenues for future research and theoretical implications of meaningful and inspiring reality TV for positive psychology are discussed. 相似文献
150.
V. K. Wadhawan 《Resonance》2005,10(11):27-41
A structure is an assembly that serves an engineering function. It is reasonable to expect that all engineering design should
be smart, and not dumb. But one can still make a distinction between smartly designed structures and smart structures. The
latter term has acquired a specific technical meaning over the last few decades. A smart structure is that which has the ability
to respond adaptively in a pre-designed useful and efficient manner to changes in environmental conditions, including any
changes in its own condition; the response is adaptive in the sense that two or more stimuli or inputs may be received as
anticipated and yet there is a single response function as per design. Smartness ensures that the structure gives optimum
performance under a variety of environmental conditions. While structures with some degree of smartness have been designed
from times immemorial, the current activity and excitement in this field derives its impetus from the level of sophistication
achieved in materials science, information technology, measurement science, sensors, actuators, signal processing, nanotechnology,
cybernetics, artificial intelligence, and biomimetics. 相似文献