全文获取类型
| 收费全文 | 13918篇 |
| 免费 | 58篇 |
| 国内免费 | 1篇 |
专业分类
| 教育 | 10919篇 |
| 科学研究 | 1239篇 |
| 各国文化 | 39篇 |
| 体育 | 420篇 |
| 综合类 | 1篇 |
| 文化理论 | 389篇 |
| 信息传播 | 970篇 |
出版年
| 2023年 | 8篇 |
| 2022年 | 7篇 |
| 2021年 | 39篇 |
| 2020年 | 41篇 |
| 2019年 | 68篇 |
| 2018年 | 2242篇 |
| 2017年 | 2160篇 |
| 2016年 | 1653篇 |
| 2015年 | 174篇 |
| 2014年 | 210篇 |
| 2013年 | 624篇 |
| 2012年 | 292篇 |
| 2011年 | 767篇 |
| 2010年 | 889篇 |
| 2009年 | 507篇 |
| 2008年 | 726篇 |
| 2007年 | 1213篇 |
| 2006年 | 118篇 |
| 2005年 | 457篇 |
| 2004年 | 522篇 |
| 2003年 | 408篇 |
| 2002年 | 173篇 |
| 2001年 | 47篇 |
| 2000年 | 68篇 |
| 1999年 | 49篇 |
| 1998年 | 34篇 |
| 1997年 | 51篇 |
| 1996年 | 46篇 |
| 1995年 | 34篇 |
| 1994年 | 39篇 |
| 1993年 | 32篇 |
| 1992年 | 44篇 |
| 1991年 | 35篇 |
| 1990年 | 26篇 |
| 1989年 | 13篇 |
| 1988年 | 16篇 |
| 1987年 | 10篇 |
| 1986年 | 15篇 |
| 1985年 | 17篇 |
| 1984年 | 14篇 |
| 1983年 | 11篇 |
| 1982年 | 9篇 |
| 1981年 | 15篇 |
| 1980年 | 9篇 |
| 1979年 | 6篇 |
| 1978年 | 5篇 |
| 1977年 | 4篇 |
| 1976年 | 5篇 |
| 1975年 | 8篇 |
| 1974年 | 7篇 |
排序方式： 共有10000条查询结果，搜索用时 15 毫秒
1.
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
2.
3.
4.
5.
6.
7.
Anthony J. Sadar 《Science & Education》2018,27(1-2):233-235
8.
Children are sensitive to a number of considerations influencing distributions of resources, including equality, equity, and reciprocity. We tested whether children use a specific type of reciprocity norm—market norms—in which resources are distributed differentially based strictly on amount offered in return. In two studies, 195 children 5–10 years and 60 adults distributed stickers to friends offering same or different amounts of money. Overall, participants distributed more equally when offers were the same and more unequally when offers were different. Although sensitive to why friends offered different amounts of money, children increasingly incorporated market norms into their distributions with age, as the oldest children and adults distributed more to those offering more, irrespective of the reasons provided. 相似文献
9.
10.