全文获取类型
| 收费全文 | 436篇 |
| 免费 | 9篇 |
专业分类
| 教育 | 374篇 |
| 科学研究 | 7篇 |
| 各国文化 | 12篇 |
| 体育 | 12篇 |
| 文化理论 | 3篇 |
| 信息传播 | 37篇 |
出版年
| 2022年 | 4篇 |
| 2021年 | 4篇 |
| 2020年 | 11篇 |
| 2019年 | 12篇 |
| 2018年 | 18篇 |
| 2017年 | 22篇 |
| 2016年 | 14篇 |
| 2015年 | 17篇 |
| 2014年 | 9篇 |
| 2013年 | 89篇 |
| 2012年 | 18篇 |
| 2011年 | 2篇 |
| 2010年 | 7篇 |
| 2009年 | 8篇 |
| 2008年 | 8篇 |
| 2007年 | 6篇 |
| 2006年 | 7篇 |
| 2005年 | 3篇 |
| 2004年 | 14篇 |
| 2003年 | 6篇 |
| 2002年 | 9篇 |
| 2001年 | 8篇 |
| 2000年 | 2篇 |
| 1999年 | 5篇 |
| 1998年 | 2篇 |
| 1997年 | 5篇 |
| 1996年 | 4篇 |
| 1995年 | 4篇 |
| 1994年 | 5篇 |
| 1993年 | 9篇 |
| 1992年 | 6篇 |
| 1991年 | 3篇 |
| 1990年 | 7篇 |
| 1989年 | 6篇 |
| 1988年 | 3篇 |
| 1987年 | 2篇 |
| 1986年 | 5篇 |
| 1985年 | 6篇 |
| 1984年 | 11篇 |
| 1983年 | 6篇 |
| 1982年 | 7篇 |
| 1981年 | 3篇 |
| 1980年 | 4篇 |
| 1979年 | 8篇 |
| 1978年 | 7篇 |
| 1977年 | 5篇 |
| 1976年 | 5篇 |
| 1975年 | 6篇 |
| 1974年 | 4篇 |
| 1970年 | 3篇 |
排序方式： 共有445条查询结果，搜索用时 15 毫秒
91.
92.
93.
Joyce Mesrobian 《Early Childhood Education Journal》1994,21(4):36-38
Joyce Mesrobian is an early childhood consultant and storyteller in Chicago and its suburbs 相似文献
94.
95.
96.
97.
98.
This article explores health journalists’ sourcing patterns in the Dutch-speaking part of Belgium across a range of different media including newspapers, magazines, radio, television and online health news websites. A cross-sectional quantitative content analysis of health news items collected in February 2015 (N?=?981) was established to examine the number and origin (e.g. industry, citizens, experts) of sources (N?=?1998) mentioned in health news stories with particular attention paid to differences across various media types. Despite recent claims of media convergence, cross-media comparisons are scarce and, for a specialized beat such as health, nonexistent. The key findings of this study indicate that ordinary citizens and academic experts constitute the two largest source categories. The small share of industry-related sources confirms journalists’ skeptical attitude towards content provided by the industry. But on closer inspection, large differences can be observed across various media types. On the one hand, ordinary citizens occur with relatively high frequency on television but hardly make an appearance in online news items. Academic sources, on the other hand, are dominant online but nearly absent in television news items. In sum, this analysis demonstrates that health journalists’ source uses differ across various media platforms. 相似文献
99.
100.
Terje Grøntoft David Thickett Paul Lankester Stephen Hackney Joyce H. Townsend Kristin Ramsholt 《文物保护研究》2016,61(1):70-82
Air pollution is one of the environmental influences that degrade cultural heritage objects situated indoors. Other essential influences, such as temperature, relative humidity, and light are often well monitored. The presence of air pollutants is less often measured or included in risk assessment. The MEMORI® technology presented in this paper was developed as a tool for easy measurement and assessment of the general risk of degradation of heritage objects situated indoors due to indoor exposure to air pollutants. MEMORI dosimetry was performed in locations belonging to English Heritage and Tate (both located in London) and the National Archives of Norway in Oslo, to assess air quality. The related damage risk for collection objects and the protection offered by display and storage designs was assessed. A high level of acidic effect was observed inside a number of showcases, and a high level of oxidizing effect was observed in some room locations. Relatively simple mitigation measures, such as constructing tightly sealed showcases using low emitting materials, installing active carbon absorbing media inside a ‘microclimate’ frame, and using cardboard storage boxes for paper, significantly improved air quality. Overall, implementation of such measures is likely to improve the preservation of objects and reduce conservation costs. 相似文献