全文获取类型
| 收费全文 | 17967篇 |
| 免费 | 98篇 |
| 国内免费 | 6篇 |
专业分类
| 教育 | 13685篇 |
| 科学研究 | 1596篇 |
| 各国文化 | 105篇 |
| 体育 | 859篇 |
| 综合类 | 4篇 |
| 文化理论 | 472篇 |
| 信息传播 | 1350篇 |
出版年
| 2023年 | 17篇 |
| 2022年 | 27篇 |
| 2021年 | 77篇 |
| 2020年 | 167篇 |
| 2019年 | 219篇 |
| 2018年 | 2366篇 |
| 2017年 | 2312篇 |
| 2016年 | 1800篇 |
| 2015年 | 273篇 |
| 2014年 | 307篇 |
| 2013年 | 1532篇 |
| 2012年 | 409篇 |
| 2011年 | 888篇 |
| 2010年 | 987篇 |
| 2009年 | 595篇 |
| 2008年 | 820篇 |
| 2007年 | 1310篇 |
| 2006年 | 230篇 |
| 2005年 | 553篇 |
| 2004年 | 583篇 |
| 2003年 | 503篇 |
| 2002年 | 260篇 |
| 2001年 | 124篇 |
| 2000年 | 147篇 |
| 1999年 | 80篇 |
| 1998年 | 74篇 |
| 1997年 | 107篇 |
| 1996年 | 99篇 |
| 1995年 | 67篇 |
| 1994年 | 85篇 |
| 1993年 | 73篇 |
| 1992年 | 87篇 |
| 1991年 | 76篇 |
| 1990年 | 67篇 |
| 1989年 | 50篇 |
| 1988年 | 54篇 |
| 1987年 | 40篇 |
| 1986年 | 56篇 |
| 1985年 | 62篇 |
| 1984年 | 56篇 |
| 1983年 | 53篇 |
| 1982年 | 44篇 |
| 1981年 | 38篇 |
| 1980年 | 37篇 |
| 1979年 | 38篇 |
| 1978年 | 43篇 |
| 1977年 | 27篇 |
| 1976年 | 27篇 |
| 1975年 | 17篇 |
| 1948年 | 18篇 |
排序方式： 共有10000条查询结果，搜索用时 31 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.
Michael J. Mouat 《Journal of Cultural Economy》2018,11(4):315-329
According to its proponents, animal-free animal food products, such as cultured meat and synthetic cow’s milk, have the potential to overcome various environmental, health and ethical challenges that have emerged around global animal product consumption and the industrial agriculture that is needed to support it. Apart from the myriad of technical problems making animal-free food products, critics have pointed out the blurry ontological status of the food and the ethical challenges therein, and have questioned the veracity of the various promissory narratives being produced. This paper considers animal-free food from a social studies of economies and markets (SSEM) perspective. As a market that currently mostly only exists in potential, an SSEM perspective can reveal the various social and material relations that comprise the (bio)capital formation that will underpin any market-to-be, an aspect of markets that are often invisible once markets are up and running. Moreover, this perspective details the intimate role markets have in establishing the ethical and ontological aspects of animal-free foods in a political economy shaped by neoliberalisation and financialisation. 相似文献
8.
Anthony J. Sadar 《Science & Education》2018,27(1-2):233-235
9.
10.