全文获取类型
收费全文 | 1173篇 |
免费 | 20篇 |
国内免费 | 4篇 |
专业分类
教育 | 883篇 |
科学研究 | 83篇 |
各国文化 | 22篇 |
体育 | 75篇 |
综合类 | 1篇 |
文化理论 | 16篇 |
信息传播 | 117篇 |
出版年
2022年 | 7篇 |
2021年 | 17篇 |
2020年 | 11篇 |
2019年 | 21篇 |
2018年 | 35篇 |
2017年 | 27篇 |
2016年 | 44篇 |
2015年 | 21篇 |
2014年 | 45篇 |
2013年 | 300篇 |
2012年 | 15篇 |
2011年 | 26篇 |
2010年 | 18篇 |
2009年 | 25篇 |
2008年 | 33篇 |
2007年 | 29篇 |
2006年 | 28篇 |
2005年 | 23篇 |
2004年 | 17篇 |
2003年 | 19篇 |
2002年 | 21篇 |
2001年 | 10篇 |
2000年 | 12篇 |
1999年 | 14篇 |
1998年 | 10篇 |
1997年 | 18篇 |
1996年 | 11篇 |
1995年 | 14篇 |
1994年 | 13篇 |
1993年 | 14篇 |
1992年 | 9篇 |
1991年 | 14篇 |
1990年 | 11篇 |
1989年 | 13篇 |
1988年 | 9篇 |
1987年 | 7篇 |
1985年 | 15篇 |
1984年 | 9篇 |
1983年 | 24篇 |
1982年 | 19篇 |
1981年 | 11篇 |
1979年 | 13篇 |
1978年 | 12篇 |
1977年 | 11篇 |
1975年 | 8篇 |
1974年 | 11篇 |
1973年 | 10篇 |
1972年 | 6篇 |
1970年 | 7篇 |
1965年 | 6篇 |
排序方式: 共有1197条查询结果,搜索用时 15 毫秒
51.
Bichler Sarah Stadler Matthias Bühner Markus Greiff Samuel Fischer Frank 《Instructional Science》2022,50(3):335-359
Instructional Science - Extensive research has established that successful learning from an example is conditional on an important learning activity: self-explanation. Moreover, a model for... 相似文献
52.
Data-sharing is an essential tool for replication, validation and extension of empirical results. Using a hand-collected data set describing the data-sharing behaviour of 488 randomly selected empirical researchers, we provide evidence that most researchers in economics and management do not share their data voluntarily. We derive testable hypotheses based on the theoretical literature on information-sharing and relate data-sharing to observable characteristics of researchers. We find empirical support for the hypotheses that voluntary data-sharing significantly increases with (a) academic tenure, (b) the quality of researchers, (c) the share of published articles subject to a mandatory data-disclosure policy of journals, and (d) personal attitudes towards “open science” principles. On the basis of our empirical evidence, we discuss a set of policy recommendations. 相似文献
53.
54.
The bounded-input bounded-output stability, finite time stability and settling time of a single-loop feedback system consisting of a nonlinear time-varying gain followed by a linear time-invariant system are investigated via a nonlinear integral inequality. The gain has the form k0+k1(t)+k2(t)g(bd) where g(bd) is a monotonic increasing function. The system is bounded-input bounded-output stable provided the time-varying gains are L1(0, t8) functions and is finite time stable for bounded gains. The nonlinear integral inequality, which is used to obtain explicit and useful bounds on the output of the system, is also employed to determine the settling time. 相似文献
55.
Femmie Juffer Jesús Palacios Lucy Le Mare Edmund J. S. Sonuga‐Barke Wendy Tieman Marian J. Bakermans‐Kranenburg Panayiota Vorria Marinus H. van IJzendoorn Frank C. Verhulst 《Monographs of the Society for Research in Child Development》2011,76(4):31-61
This chapter first presents a review of research on the development of adopted children, focusing on meta‐analytic evidence and highlighting comparisons between adopted children with and without histories of early adversity. Some methodological issues arising from this literature are considered as well. Second, 7 longitudinal studies of adopted children's development are described, and the convergence of findings across the longitudinal studies and with the cross‐sectionally based meta‐analytic evidence is discussed. Third, the role of the adoptive family in supporting adopted children's development is explored. 相似文献
56.
57.
58.
59.
[The] business man is generous to a fault, but one thing he does demand of all teachers and lecturers and journalists: if we're going to pay them our good money, they‘ve got to help us by selling efficiency and whooping it up for rational prosperity? And when it comes to these blab-mouth, fault-finding, pessimistic, cynical University teachers, let me tell you that during this golden coming year it's just as much our duty to bring influence to have these cusses fired as it is to sell all the real estate and gather in all the good shekels we can. Sinclair Lewis. Babbitt. 相似文献
60.