全文获取类型
收费全文 | 561篇 |
免费 | 5篇 |
专业分类
教育 | 380篇 |
科学研究 | 45篇 |
各国文化 | 6篇 |
体育 | 34篇 |
文化理论 | 27篇 |
信息传播 | 74篇 |
出版年
2021年 | 4篇 |
2020年 | 9篇 |
2019年 | 11篇 |
2018年 | 18篇 |
2017年 | 21篇 |
2016年 | 13篇 |
2015年 | 10篇 |
2014年 | 12篇 |
2013年 | 143篇 |
2012年 | 8篇 |
2011年 | 14篇 |
2010年 | 9篇 |
2009年 | 10篇 |
2008年 | 5篇 |
2007年 | 10篇 |
2006年 | 12篇 |
2005年 | 11篇 |
2004年 | 13篇 |
2003年 | 16篇 |
2002年 | 19篇 |
2001年 | 13篇 |
2000年 | 9篇 |
1999年 | 13篇 |
1998年 | 9篇 |
1997年 | 9篇 |
1996年 | 8篇 |
1994年 | 7篇 |
1993年 | 3篇 |
1992年 | 4篇 |
1991年 | 7篇 |
1990年 | 3篇 |
1989年 | 8篇 |
1987年 | 3篇 |
1985年 | 5篇 |
1984年 | 6篇 |
1983年 | 8篇 |
1982年 | 5篇 |
1981年 | 4篇 |
1980年 | 7篇 |
1979年 | 5篇 |
1978年 | 2篇 |
1977年 | 9篇 |
1976年 | 3篇 |
1975年 | 2篇 |
1974年 | 5篇 |
1973年 | 5篇 |
1971年 | 4篇 |
1967年 | 4篇 |
1966年 | 4篇 |
1943年 | 2篇 |
排序方式: 共有566条查询结果,搜索用时 15 毫秒
141.
TEACHING WITH TELEVISION: AN AMERICAN SYSTEM 总被引:1,自引:1,他引:0
The origins and growth of the use of CCTV at Worcester Polytechnic Institute are described, together with the present range of activities. VCR material forms an important component in many courses: the special facilities created to allow easy preparation of this material, either as a straightforward lecture or in a classroom situation with feedback, are dealt with 相似文献
142.
143.
Roy B. Clariana Daren Wagner Lucia C. Roher Murphy 《Educational technology research and development : ETR & D》2000,48(3):5-22
This investigation considers the effects of feedback on memory with an emphasis on retention of initial error responses. Based
on a connectionist model (Clariana, 1999a), this study hypothesized that delayed-retention memory of initial lesson responses
would be greater for delayed feedback compared to immediate feedback, that feedback effects will be greatest with difficult
items, and that there would be a disordinal interaction of feedback timing and item difficulty. High school students (n =
52) completed a computer-based lesson with either delayed feedback, single-try immediate feedback, or multiple-try immediate
feedback. There was a significant difference for type of feedback, with retention test memory of initial lesson responses
greater under delayed feedback than under immediate feedback. Also, instructional feedback effects varied depending on lesson
item difficulty. The findings indicate that a connectionist model can explain instructional feedback effects. 相似文献
144.
A Standardized Generalized Dimensionality Discrepancy Measure and a Standardized Model‐Based Covariance for Dimensionality Assessment for Multidimensional Models 下载免费PDF全文
Roy Levy Yuning Xu Nedim Yel Dubravka Svetina 《Journal of Educational Measurement》2015,52(2):144-158
The standardized generalized dimensionality discrepancy measure and the standardized model‐based covariance are introduced as tools to critique dimensionality assumptions in multidimensional item response models. These tools are grounded in a covariance theory perspective and associated connections between dimensionality and local independence. Relative to their precursors, they allow for dimensionality assessment in a more readily interpretable metric of correlations. A simulation study demonstrates the utility of the discrepancy measures’ application at multiple levels of dimensionality analysis, and compares them to factor analytic and item response theoretic approaches. An example illustrates their use in practice. 相似文献
145.
146.
Mukhopadhyay M Sinha R Pal M Bhattacharyya S Dan A Roy MM 《Indian journal of clinical biochemistry : IJCB》2011,26(3):274-278
The progress of fracture union requires close monitoring. Whereas, clinical examination and radiographic studies assess the
outcome, biochemical markers like serum alkaline phosphatase and urinary hydroxyproline reflect the actual status of bone
resorption and bone formation over a short time frame. 36 patients of long bone fracture were randomly allocated for the study.
When the patient reported to the Department of Orthopedics after fracture, serum and urinary samples were collected and X-ray
of the affected part were taken. Subsequent samples were collected and X-ray taken just after management (either operative
or conservative), after 3rd, 5th, 8th and 12th week, respectively after onset of fracture. According to the course of callus
formation the patients were divided into two groups that progressed to proper union or malunion. The levels of serum alkaline
phosphatase, urinary total and free hydroxyproline levels were measured and statistically analysed and compared. A statistically
significant positive correlation between total urinary hydroxyproline excretion and serum alkaline phosphatase indicate progress
towards satisfactory union. Thus, serial monitoring of biochemical markers of bone turnover can be used as an adjunct to clinical
and radiological evidence of fracture healing. 相似文献
147.
148.
Excessive foot pronation is a risk factor of running injuries and motion control footwear is designed to control foot pronation. With the movement transfer between foot pronation and tibial rotation, motion control footwear may not only be confined to controlling foot pronation. In view of the controversies in the literature on effectiveness of motion control footwear, this paper reviewed the efficacy of motion control footwear functions as reported in the literature. Eligible studies were identified from seven electronic databases. Two independent authors extracted the data and assessed the methodological qualities using the Jadad Scale. A total of 14 quasi randomised controlled trials were included. Even though the included studies were rated as "low quality" according to the Jadad Scale, the data were pooled and analysed. Results revealed that motion control footwear was effective in reducing the amount of foot pronation and the peak vertical impact during landing. There is no evidence that suggests motion control footwear for controlling kinematics of the proximal segments. 相似文献
149.
150.