全文获取类型
| 收费全文 | 19469篇 |
| 免费 | 116篇 |
| 国内免费 | 29篇 |
专业分类
| 教育 | 14205篇 |
| 科学研究 | 2132篇 |
| 各国文化 | 78篇 |
| 体育 | 944篇 |
| 综合类 | 8篇 |
| 文化理论 | 445篇 |
| 信息传播 | 1802篇 |
出版年
| 2023年 | 37篇 |
| 2022年 | 58篇 |
| 2021年 | 98篇 |
| 2020年 | 192篇 |
| 2019年 | 261篇 |
| 2018年 | 2488篇 |
| 2017年 | 2445篇 |
| 2016年 | 1892篇 |
| 2015年 | 353篇 |
| 2014年 | 404篇 |
| 2013年 | 1578篇 |
| 2012年 | 463篇 |
| 2011年 | 983篇 |
| 2010年 | 1082篇 |
| 2009年 | 620篇 |
| 2008年 | 852篇 |
| 2007年 | 1381篇 |
| 2006年 | 236篇 |
| 2005年 | 502篇 |
| 2004年 | 583篇 |
| 2003年 | 485篇 |
| 2002年 | 230篇 |
| 2001年 | 143篇 |
| 2000年 | 183篇 |
| 1999年 | 113篇 |
| 1998年 | 89篇 |
| 1997年 | 97篇 |
| 1996年 | 75篇 |
| 1995年 | 58篇 |
| 1994年 | 53篇 |
| 1993年 | 46篇 |
| 1992年 | 84篇 |
| 1991年 | 89篇 |
| 1990年 | 68篇 |
| 1989年 | 75篇 |
| 1988年 | 80篇 |
| 1987年 | 69篇 |
| 1986年 | 83篇 |
| 1985年 | 86篇 |
| 1984年 | 61篇 |
| 1983年 | 76篇 |
| 1982年 | 63篇 |
| 1981年 | 46篇 |
| 1980年 | 34篇 |
| 1979年 | 58篇 |
| 1978年 | 54篇 |
| 1977年 | 39篇 |
| 1976年 | 41篇 |
| 1975年 | 33篇 |
| 1973年 | 38篇 |
排序方式： 共有10000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.
Daniel C. Kopala-Sibley Marilyn Cyr Megan C. Finsaas Jonathan Orawe Anna Huang Nim Tottenham Daniel N. Klein 《Child development》2020,91(1):110-128
Seventy-nine 3-year olds and their mothers participated in a laboratory-based task to assess maternal hostility. Mothers also reported their behavioral regulation of their child. Seven years later, functional magnetic resonance imaging data were acquired while viewing emotional faces and completing a reward processing task. Maternal hostility predicted more negative amygdala connectivity during exposure to sad relative to neutral faces with frontal and parietal regions as well as more negative left ventral striatal connectivity during monetary gain relative to loss feedback with the right posterior orbital frontal cortex and right inferior frontal gyrus. In contrast, maternal regulation predicted enhanced cingulo-frontal connectivity during monetary gain relative to loss feedback. Results suggest parenting is associated with alterations in emotion and reward processing circuitry 7–8 years later. 相似文献
3.
David Kaldewey 《Minerva》2018,56(2):161-182
This article analyzes the concept of “grand challenges” as part of a shift in how scientists and policymakers frame and communicate their respective agendas. The history of the grand challenges discourse helps to understand how identity work in science and science policy has been transformed in recent decades. Furthermore, the question is raised whether this discourse is only an indicator, or also a factor in this transformation. Building on conceptual history and historical semantics, the two parts of the article reconstruct two discursive shifts. First, the observation that in scientific communication references to “problems” are increasingly substituted by references to “challenges” indicates a broader cultural trend of how attitudes towards what is problematic have shifted in the last decades. Second, as the grand challenges discourse is rooted in the sphere of sports and competition, it introduces a specific new set of societal values and practices into the spheres of science and technology. The article concludes that this process can be characterized as the sportification of science, which contributes to self-mobilization and, ultimately, to self-optimization of the participating scientists, engineers, and policymakers. 相似文献
4.
5.
6.
7.
8.
9.
10.
Anthony J. Sadar 《Science & Education》2018,27(1-2):233-235