全文获取类型
收费全文 | 10688篇 |
免费 | 99篇 |
国内免费 | 11篇 |
专业分类
教育 | 6752篇 |
科学研究 | 2094篇 |
各国文化 | 78篇 |
体育 | 790篇 |
综合类 | 5篇 |
文化理论 | 72篇 |
信息传播 | 1007篇 |
出版年
2021年 | 96篇 |
2020年 | 137篇 |
2019年 | 220篇 |
2018年 | 269篇 |
2017年 | 251篇 |
2016年 | 197篇 |
2015年 | 146篇 |
2014年 | 198篇 |
2013年 | 1940篇 |
2012年 | 220篇 |
2011年 | 202篇 |
2010年 | 178篇 |
2009年 | 163篇 |
2008年 | 165篇 |
2007年 | 177篇 |
2006年 | 140篇 |
2005年 | 144篇 |
2004年 | 132篇 |
2003年 | 132篇 |
2002年 | 127篇 |
2001年 | 168篇 |
2000年 | 175篇 |
1999年 | 153篇 |
1998年 | 81篇 |
1997年 | 80篇 |
1996年 | 103篇 |
1994年 | 84篇 |
1993年 | 85篇 |
1992年 | 122篇 |
1991年 | 128篇 |
1990年 | 133篇 |
1989年 | 150篇 |
1988年 | 112篇 |
1987年 | 103篇 |
1986年 | 144篇 |
1985年 | 142篇 |
1984年 | 119篇 |
1983年 | 117篇 |
1982年 | 101篇 |
1981年 | 85篇 |
1980年 | 84篇 |
1979年 | 124篇 |
1978年 | 100篇 |
1977年 | 93篇 |
1976年 | 90篇 |
1975年 | 72篇 |
1974年 | 92篇 |
1973年 | 78篇 |
1972年 | 71篇 |
1971年 | 89篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
Ida Conboy 《Support for Learning》2021,36(3):380-399
This research explored how seven primary school teaching assistants (TAs) experienced their role in supporting children's mental health. Interviews were analysed using Interpretative Phenomenological Analysis (IPA). The participants believed that they supported children's mental health and particularly referenced the close relationships that they formed with children. Throughout their accounts of supporting children, the TAs referenced helpful factors (e.g. support from other staff) and challenges (e.g. hierarchy) within the school system. Supporting children’s mental health was an emotional experience for the TAs; they discussed the rewarding element, however, the topic also elicited fear. The findings provide several implications for school staff and external professionals about how TAs can be supported in their role. These include involving TAs in training opportunities, providing TAs with supervision, considering communication systems in schools, and introducing a mental health policy. 相似文献
2.
Thomas H. Champney 《Anatomical sciences education》2019,12(4):432-434
The value that willed body donors provide to medical education is priceless. Their precious gift helps to teach anatomy, spatial relationships between morphological structures, anatomical variation, and professionalism to medical students in a way that plastic models, podcasts, and lectures cannot. They are also an important resource for medical research and a wide variety of postgraduate training opportunities. While many body donation programs throughout the world are nonprofit organizations, there are body donation companies in the United States that sell donors for-profit. These “body brokers” have accumulated large profits from this business. It is incongruous that others would profit from such a priceless, freely donated gift. To prevent this incongruity, it is proposed that the international anatomical community develop a normative culture (a bioethos) for body donation programs. This would involve the conscious and systematic development of ethical principles for the day-to-day policies and practices of institutions that collect and use human bodies. With the development of this bioethos, a cultural shift in how donors are treated would occur and, over time, this would become the normal practice. These principles would become fundamental and foundational for the procurement and use of priceless human tissues. 相似文献
3.
4.
5.
6.
We analyse the evolution of the slope (critical speed) and the y-intercept (anaerobic distance capacity) of the linear distance-time relationship over a century of Olympic running performances. The distance-time relationship of each Olympic Games (1920-2004) was plotted using the performances in the 800-, 1500- and 5000-m track events. Values for critical speed and anaerobic distance capacity were determined by linear modelling. Mean performances for the 800, 1500 and 5000 m were 104.9 +/- 1.5 s (1.4%), 217.2 +/- 2.8 s (1.3%) and 808.9 +/- 18.4 s (2.3%), respectively. Critical speed improved during the first three-quarters of the twentieth century to reach a plateau in 1984. This is in accordance with the literature (Peronnet & Thibault, 1989) and suggests that "human aerobic endurance" has improved within the century (+13.4%) and tends to stabilize. Anaerobic distance capacity was highly variable over the century (coefficient of variation = 9.4%) and did not show a linear improvement over the years as has previously been suggested (Peronnet & Thibault, 1989). This could be due to an artefact in the application of the two-parameter model to only three Olympic performances. A limitation to the use of this linear mathematical model to fit physiological data may have been demonstrated. 相似文献
7.
8.
9.
10.
Theo H?rder 《Informatik - Forschung und Entwicklung》2002,17(3):99-100
Ohne Zusammenfassung 相似文献