全文获取类型
收费全文 | 5404篇 |
免费 | 95篇 |
国内免费 | 4篇 |
专业分类
教育 | 3910篇 |
科学研究 | 394篇 |
各国文化 | 81篇 |
体育 | 520篇 |
综合类 | 1篇 |
文化理论 | 45篇 |
信息传播 | 552篇 |
出版年
2023年 | 18篇 |
2022年 | 28篇 |
2021年 | 54篇 |
2020年 | 98篇 |
2019年 | 182篇 |
2018年 | 208篇 |
2017年 | 224篇 |
2016年 | 181篇 |
2015年 | 127篇 |
2014年 | 173篇 |
2013年 | 1233篇 |
2012年 | 151篇 |
2011年 | 132篇 |
2010年 | 107篇 |
2009年 | 130篇 |
2008年 | 155篇 |
2007年 | 134篇 |
2006年 | 140篇 |
2005年 | 118篇 |
2004年 | 120篇 |
2003年 | 102篇 |
2002年 | 99篇 |
2001年 | 73篇 |
2000年 | 97篇 |
1999年 | 82篇 |
1998年 | 58篇 |
1997年 | 60篇 |
1996年 | 70篇 |
1995年 | 52篇 |
1994年 | 69篇 |
1993年 | 48篇 |
1992年 | 65篇 |
1991年 | 46篇 |
1990年 | 53篇 |
1989年 | 51篇 |
1988年 | 39篇 |
1987年 | 34篇 |
1986年 | 36篇 |
1985年 | 30篇 |
1984年 | 36篇 |
1983年 | 25篇 |
1982年 | 27篇 |
1981年 | 37篇 |
1980年 | 28篇 |
1979年 | 30篇 |
1978年 | 28篇 |
1977年 | 17篇 |
1976年 | 17篇 |
1974年 | 26篇 |
1973年 | 20篇 |
排序方式: 共有5503条查询结果,搜索用时 15 毫秒
1.
Jonathan S. Jones Anna-Lynne R. Adlam Abdelmalek Benattayallah Fraser N. Milton 《Child development》2022,93(3):815-830
Working memory training improves children's cognitive performance on untrained tasks; however, little is known about the underlying neural mechanisms. This was investigated in 32 typically developing children aged 10–14 years (19 girls and 13 boys) using a randomized controlled design and multi-modal magnetic resonance imaging (Devon, UK; 2015–2016). Training improved working memory performance and increased intrinsic functional connectivity between the bilateral intraparietal sulci. Furthermore, improvements in working memory were associated with greater recruitment of the left middle frontal gyrus on a complex span task. Repeated engagement of fronto-parietal regions during training may increase their activity and functional connectivity over time, affording greater working memory performance. The plausibility of generalizable cognitive benefits from a neurobiological perspective and implications for neurodevelopmental theory are discussed. 相似文献
2.
Research in Higher Education - Increasingly, undergraduates take more than 4 years to complete a baccalaureate, a situation widely perceived as a waste of time and money, for students,... 相似文献
3.
4.
Guilherme Giannini Artioli Craig Sale Rebecca Louise Jones 《European Journal of Sport Science》2019,19(1):30-39
AbstractCarnosine was originally discovered in skeletal muscle, where it exists in larger amounts than in other tissues. The majority of research into the physiological roles of carnosine have been conducted on skeletal muscle. Given this and the potential for muscle carnosine content to be increased with supplementation, there is now a large body of research examining the ergogenic effects (or otherwise) of carnosine. More recent research, however, points towards a potential for carnosine to exert a wider range of physiological effects in other tissues, including the brain, heart, pancreas, kidney and cancer cells. Taken together, this is suggestive of a potential for carnosine to have therapeutic benefits in health and disease, although this is by no means without complication. Herein, we will provide a review of the current literature relating to the potential therapeutic effects of carnosine in health and disease. 相似文献
5.
In the IR field it is clear that the value of a system depends on the cost and benefit profiles of its users. It would seem obvious that different users would prefer different systems. In the TREC-9 filtering track, systems are evaluated by a utility measure specifying a given cost and benefit. However, in the study of decision systems it is known that, in some cases, one system may be unconditionally better than another. In this paper we employ a decision theoretic approach to find conditions under which an Information Filtering (IF) system is unconditionally superior to another for all users regardless of their cost and benefit profiles.It is well known that if two IF systems have equal precision the system with better recall will be preferred by all users. Similarly, with equal recall, better precision is universally preferred. We confirm these known results and discover an unexpected dominance relation in which a system with lower recall will be universally preferred provided its precision is sufficiently higher. 相似文献
6.
Paul Morris 《比较教育学》1996,32(1):95-110
The economic success of some of the countries within the East Asian region has generated a range of studies which have attempted to identify the sources of that growth. One strand within these analyses has focused on the critical role of schooling in the accumulation of human capital. This paper examines the role which education has played in the rapid development of the four 'Asian Tigers'; namely: Hong Kong, Taiwan, South Korea and Singapore. It is argued that whilst patterns of educational provision displayed some common features there were also significant differences in other areas such as the role of the state, sources of educational funding, the role of technical education and of the school curriculum. 相似文献
7.
Our argument in this paper is that the model of literary progression which Bakhtin (1981, 1986) expounds in his writing on the chronotope can generate insight into the processes through which pupils improve their writing. We suggest more generally that there are concepts and clues in Bakhtin's historical model of the development of the European novel and in his theory of dialogue which can be helpful in both the evaluation and teaching of classroom writing. 相似文献
8.
9.
10.