全文获取类型
收费全文 | 13245篇 |
免费 | 140篇 |
国内免费 | 11篇 |
专业分类
教育 | 8793篇 |
科学研究 | 2186篇 |
各国文化 | 86篇 |
体育 | 1008篇 |
综合类 | 6篇 |
文化理论 | 122篇 |
信息传播 | 1195篇 |
出版年
2021年 | 140篇 |
2020年 | 205篇 |
2019年 | 347篇 |
2018年 | 464篇 |
2017年 | 406篇 |
2016年 | 359篇 |
2015年 | 225篇 |
2014年 | 309篇 |
2013年 | 2352篇 |
2012年 | 279篇 |
2011年 | 249篇 |
2010年 | 254篇 |
2009年 | 218篇 |
2008年 | 209篇 |
2007年 | 216篇 |
2006年 | 180篇 |
2005年 | 171篇 |
2004年 | 164篇 |
2003年 | 162篇 |
2002年 | 147篇 |
2001年 | 192篇 |
2000年 | 196篇 |
1999年 | 171篇 |
1998年 | 95篇 |
1997年 | 101篇 |
1996年 | 122篇 |
1995年 | 91篇 |
1994年 | 108篇 |
1993年 | 102篇 |
1992年 | 141篇 |
1991年 | 149篇 |
1990年 | 151篇 |
1989年 | 172篇 |
1988年 | 127篇 |
1987年 | 123篇 |
1986年 | 161篇 |
1985年 | 165篇 |
1984年 | 138篇 |
1983年 | 131篇 |
1982年 | 123篇 |
1981年 | 98篇 |
1980年 | 109篇 |
1979年 | 146篇 |
1978年 | 126篇 |
1977年 | 107篇 |
1976年 | 103篇 |
1974年 | 114篇 |
1973年 | 100篇 |
1972年 | 91篇 |
1971年 | 108篇 |
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
1.
Piret Luik Reelika Suviste Marina Lepp Tauno Palts Eno Tõnisson Merilin Säde Kaspar Papli 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(1):153-165
Learners who enrol in massive open online courses (MOOCs) have different backgrounds and tend to have different motivations than learners in traditional courses. Based on value-expectancy theory, an instrument was developed to measure motivation for enrolling in a programming MOOC. A study with 1229 adult participants in Estonian-language programming course “About Programming” was conducted to validate the instrument. Results of confirmatory factor analysis validated the 7-factor scale named factors influencing enrolment in MOOC (FIEM). FIEM comprises three factors of expectancies, three factors of values and one factor of social influence. The highest and lowest rated motivational factors influencing enrolment in programming MOOC are discussed in the paper. Interest in and expectations for the course, personal suitability of distance learning and suitability for family and work are the highest-rated motivational factors for those who enrol in MOOC. Usefulness related to own children, social influence and usefulness to related to certification were the lowest rated. The results of this study can be useful for designers of programming MOOCs and the developed scale might be used in future studies. 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.
7.
8.
Theo H?rder 《Informatik - Forschung und Entwicklung》2002,17(3):99-100
Ohne Zusammenfassung 相似文献
9.
10.