全文获取类型
收费全文 | 4740篇 |
免费 | 54篇 |
国内免费 | 1篇 |
专业分类
教育 | 3411篇 |
科学研究 | 357篇 |
各国文化 | 76篇 |
体育 | 400篇 |
综合类 | 2篇 |
文化理论 | 55篇 |
信息传播 | 494篇 |
出版年
2022年 | 22篇 |
2021年 | 41篇 |
2020年 | 80篇 |
2019年 | 122篇 |
2018年 | 146篇 |
2017年 | 144篇 |
2016年 | 119篇 |
2015年 | 80篇 |
2014年 | 131篇 |
2013年 | 1077篇 |
2012年 | 107篇 |
2011年 | 117篇 |
2010年 | 96篇 |
2009年 | 99篇 |
2008年 | 107篇 |
2007年 | 103篇 |
2006年 | 123篇 |
2005年 | 104篇 |
2004年 | 99篇 |
2003年 | 89篇 |
2002年 | 82篇 |
2001年 | 73篇 |
2000年 | 71篇 |
1999年 | 70篇 |
1998年 | 66篇 |
1997年 | 56篇 |
1996年 | 60篇 |
1995年 | 51篇 |
1994年 | 55篇 |
1993年 | 57篇 |
1992年 | 58篇 |
1991年 | 58篇 |
1990年 | 55篇 |
1989年 | 61篇 |
1988年 | 65篇 |
1987年 | 53篇 |
1986年 | 46篇 |
1985年 | 41篇 |
1984年 | 49篇 |
1983年 | 48篇 |
1982年 | 43篇 |
1981年 | 24篇 |
1980年 | 30篇 |
1979年 | 51篇 |
1978年 | 43篇 |
1977年 | 42篇 |
1976年 | 39篇 |
1974年 | 31篇 |
1973年 | 31篇 |
1969年 | 22篇 |
排序方式: 共有4795条查询结果,搜索用时 31 毫秒
61.
62.
63.
Most distance learning institutions collect vast amounts of learning data. Making sense of this ‘Big Data’ can be a challenge, in particular when data are stored at different data warehouses and require advanced statistical skills to interpret complex patterns of data. As a leading institute on learning analytics, the Open University UK instigated in 2012 a Data Wrangling initiative. This provided every Faculty with a dedicated academic with expertise data analysis and whose task is to provide strategic, pedagogical and sense-making advice to staff and senior management. Given substantial changes within the OU (e.g. new Faculty structure, real-time dashboards, two large-scale adoptions of predictive analytics approaches, increased reliance on analytics), this embedded case study provides an in-depth review of lessons learned of five years of data wrangling. We will elaborate on the design of the new structure, its strengths and potential weaknesses, and affordances to be adopted by other institutions. 相似文献
64.
65.
66.
67.
Two experiments attempted to establish vicious-circle behavior through fear motivation combined with secondary punishment. In Experiment 1, rats were trained with two CSs, a tone and a buzzer, paired with shock in different contexts. Secondary punishment based on delay and trace conditioning procedures facilitated running in fear-motivated rats, relative to four control groups. In Experiment 2, rats were given pairings of a tone CS with shock, and a buzzer CS with a drop into a water tank. Fear-motivated rats which received secondary punishment during either 33% or 100% of test trials exhibited self-punitive running relative to a nonpunished (0%) group and a backward-conditioning control group. Results indicate that “all secondary” vicious-circle behavior can be established through Pavlovian conditioning, thus supporting a conditioned fear interpretation. 相似文献
68.
69.
John P. Liefeld Thomas F. Herrmann 《Educational technology research and development : ETR & D》1990,38(2):19-25
Mastery learning, it is claimed, is among the most successful practices in higher education. Evidence supporting this claim
has recently been criticized as empirically weak. This experiment employed a four-group, pre-post design to examine the learning
consequences of a computer-administered mastery-testing approach in comparison with a seminar-discussion approach in a third-year
university course. The mastery-testing approach generated significantly higher learning achievement than did the seminar-discussion
approach. Replication and extension of this research approach are recommended to support generalizations across mastery-testing
techniques, delivery systems, and disciplines. 相似文献
70.
David Devraj Kumar P. V. Thomas John D. Morris Karen M. Tobias Mary Baker Trudy Jermanovich 《Journal of Science Education and Technology》2011,20(2):116-115
This study examined the impact of computer simulation and supported science learning on a teacher’s understanding and conceptual
knowledge of current electricity. Pre/Post tests were used to measure the teachers’ concept attainment. Overall, there was
a significant and large knowledge difference effect from Pre to Post test. Two interesting interactions were observed during
the data analysis. The first was the difference between Elementary and Secondary teachers. Both groups had significant gains,
with large effect sizes, but the Elementary teachers (Pre-Mean = 3.70, Post-Mean = 7.51) started lower and ended higher exhibiting
a significantly larger gain than the Secondary teachers (Pre-Mean = 4.96, Post-Mean = 6.71). The second interaction was the
impact of gender. Both groups showed significant gains, with large effect sizes, but females (Pre-Mean = 3.90, Post-Mean = 7.21)
gained significantly more than males (Pre-Mean = 5.13, Post-Mean = 7.01). These results confirm that computer simulation supported
science learning can have a positive effect on concept attainment in teachers. 相似文献