全文获取类型
收费全文 | 8755篇 |
免费 | 76篇 |
国内免费 | 8篇 |
专业分类
教育 | 5973篇 |
科学研究 | 1132篇 |
各国文化 | 52篇 |
体育 | 628篇 |
综合类 | 3篇 |
文化理论 | 55篇 |
信息传播 | 996篇 |
出版年
2022年 | 54篇 |
2021年 | 105篇 |
2020年 | 139篇 |
2019年 | 181篇 |
2018年 | 300篇 |
2017年 | 275篇 |
2016年 | 271篇 |
2015年 | 166篇 |
2014年 | 276篇 |
2013年 | 1425篇 |
2012年 | 207篇 |
2011年 | 240篇 |
2010年 | 210篇 |
2009年 | 186篇 |
2008年 | 227篇 |
2007年 | 195篇 |
2006年 | 177篇 |
2005年 | 157篇 |
2004年 | 176篇 |
2003年 | 130篇 |
2002年 | 133篇 |
2001年 | 197篇 |
2000年 | 204篇 |
1999年 | 183篇 |
1998年 | 94篇 |
1997年 | 130篇 |
1996年 | 106篇 |
1995年 | 78篇 |
1994年 | 97篇 |
1993年 | 71篇 |
1992年 | 165篇 |
1991年 | 130篇 |
1990年 | 118篇 |
1989年 | 146篇 |
1988年 | 131篇 |
1987年 | 104篇 |
1986年 | 108篇 |
1985年 | 110篇 |
1984年 | 80篇 |
1983年 | 94篇 |
1982年 | 65篇 |
1981年 | 74篇 |
1980年 | 61篇 |
1979年 | 107篇 |
1978年 | 67篇 |
1977年 | 66篇 |
1976年 | 57篇 |
1975年 | 53篇 |
1974年 | 60篇 |
1973年 | 57篇 |
排序方式: 共有8839条查询结果,搜索用时 0 毫秒
931.
K. Gerald Collier 《高等教育研究与发展》1985,4(1):3-27
The paper opens with a brief statement of the two conceptual frameworks on which the analysis is based. The author then takes up in turn the five classical methods of shaping students' learning: didactic instruction in the form of lectures; discussion methods; practical work in laboratories, studios etc; provision for the students' private study, including individualized learning techniques and computer‐based methods; and the assessment of students' progress. He outlines the main departures from customary practice in each area, with special attention to small‐group techniques. Finally, since a critical aspect of development is the dissemination of fresh techniques, there is a section on development strategy. 相似文献
932.
Three experiments, using rats, demonstrated the encoding of a food unconditioned stimulus (US) in a simple Pavlovian conditioning paradigm. In all three studies, one stimulus was used to signal the delivery of pellets and a different stimulus was used to signal the delivery of sucrose. In Experiment 1, postconditioning devaluation of one of the food USs selectively reduced the frequency of conditioned magazine-directed behavior during the stimulus trained with that US. In Experiment 2, transfer of the stimuli to instrumental responses resulted in selective depression of the response trained with a different outcome. In Experiment 3, acquisition of stimulus-outcome learning was impaired by unsignaled intertrial presentations of the same outcome but not of a different outcome. These results indicate that a detailed representation of the outcome is encoded in the normal course of Pavlovian conditioning. 相似文献
933.
934.
935.
936.
Michael W. Andrews 《Learning & behavior》1988,16(4):429-435
The behavior of 9 titi monkeys (Callicebus moloch) and 12 squirrel monkeys (Saimiri sciureus) was examined with respect to three categorical strategies of spatial orientation: direction, turn, and place strategies. Individual animals were initially trained to travel to a fixed location from a constant release point. Following the initial training, each animal was tested by releasing it a number of times from three other release points and analyzing its travel paths. During testing, most individual subjects tended to be highly consistent in their spatial behavior, typically following travel paths consistent with one of the three spatial strategies. No one spatial strategy, however, characterized the behavior of either species. 相似文献
937.
During the last decade it has been argued by some investigators that the distribution of galaxies in the Universe is a fractal.
This is contrary to the standard view that the Universe is homogeneous and isotropic on large scales. In this article, the
basic concepts of fractals and their characterization are introduced with the help of simple examples. The applications of
these concepts in the context of cosmology will be discussed in the second part.
A K Mittal is currently a visiting scientist at Harish-Chandra Research Institute, Allahabad, on leave from the University
of Allahabad. His research interests include chaos, fractals and their applications, partleularly in cosmology and in weather
prodiction.
T H Seshadri is at the Department of Physics and Astrophysics, University of Delhi. He is presently on lien from Harish-Chandra
Research Institute, Allahabad. Areas of his interest include cosmic microwave background radiation, large scale structures
in the Universe and application of fractals in these. 相似文献
938.
This article gives the principle of hydrodynamic lubrication and also presents the new phenomenon of levitating drops over liquid film flow, which is explained using hydrodynamic lubrication theory. 相似文献
939.
940.
This paper examines the politics and practice of education in Malaysia within the context of ethnicity and nation building. Public education in Malaysia—particularly, but not exclusively, at the pre-university level—is promoted as a nation-building tool, seeking to inculcate a sense of Malaysian-ness and patriotism. Simultaneously, however, public education—particularly, but not exclusively, at the university level—is used as a tool for the promotion of ethnic Malay interests. These two objectives are not necessarily contradictory; indeed the assertion that a vital ingredient in the creation of a ‘Malaysian nation’ is the eradication of inter-ethnic economic disparities has been at the heart of the Malaysian regime's discourse on nation building since the ethnic riots of May 1969. Hence, in this view, preferential policies for the economically disadvantaged but numerically dominant Malays are a necessary component of the nation-building project. Nonetheless, there are at least clear tensions between these two functions of education—tensions, which, I shall argue, help explain both the particularly sensitive politics of education in Malaysia, and the discursive stance the Malaysian regime has adopted within the educational field. 相似文献