全文获取类型
收费全文 | 687篇 |
免费 | 16篇 |
国内免费 | 1篇 |
专业分类
教育 | 380篇 |
科学研究 | 266篇 |
各国文化 | 4篇 |
体育 | 9篇 |
文化理论 | 6篇 |
信息传播 | 39篇 |
出版年
2023年 | 8篇 |
2022年 | 10篇 |
2021年 | 26篇 |
2020年 | 15篇 |
2019年 | 23篇 |
2018年 | 50篇 |
2017年 | 42篇 |
2016年 | 31篇 |
2015年 | 34篇 |
2014年 | 34篇 |
2013年 | 78篇 |
2012年 | 19篇 |
2011年 | 27篇 |
2010年 | 30篇 |
2009年 | 33篇 |
2008年 | 25篇 |
2007年 | 21篇 |
2006年 | 31篇 |
2005年 | 23篇 |
2004年 | 19篇 |
2003年 | 26篇 |
2002年 | 14篇 |
2001年 | 9篇 |
2000年 | 8篇 |
1999年 | 7篇 |
1998年 | 12篇 |
1997年 | 8篇 |
1996年 | 3篇 |
1995年 | 6篇 |
1994年 | 4篇 |
1993年 | 5篇 |
1992年 | 5篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 2篇 |
1987年 | 1篇 |
1986年 | 3篇 |
1985年 | 1篇 |
1983年 | 2篇 |
1979年 | 1篇 |
1977年 | 1篇 |
1976年 | 2篇 |
1975年 | 1篇 |
1973年 | 1篇 |
1962年 | 1篇 |
排序方式: 共有704条查询结果,搜索用时 15 毫秒
101.
From External Regulation to Self-Regulation: Early Parenting Precursors of Young Children's Executive Functioning 总被引:1,自引:0,他引:1
In keeping with proposals emphasizing the role of early experience in infant brain development, this study investigated the prospective links between quality of parent–infant interactions and subsequent child executive functioning (EF), including working memory, impulse control, and set shifting. Maternal sensitivity, mind-mindedness and autonomy support were assessed when children were 12 to 15 months old ( N = 80). Child EF was assessed at 18 and 26 months. All three parenting dimensions were found to relate to child EF. Autonomy support was the strongest predictor of EF at each age, independent of general cognitive ability and maternal education. These findings add to previous results on child stress-response systems in suggesting that parent–child relationships may play an important role in children's developing self-regulatory capacities. 相似文献
102.
Natasha Schranz Grant Tomkinson Tim Olds Nathan Daniell 《Journal of sports sciences》2013,31(5):459-469
Abstract The aim of this study was to quantify the anthropometric differences between elite senior Australian rowers and the Australian adult population using three-dimensional (3D) whole-body scanning. The dimensions of senior rowers competing at the 2007–2008 Australian Rowing Championships were compared with those of an age-matched sample of Australian adults. Mass, height, and sitting height were measured before the participants underwent a 3D whole-body scan, with lengths, breadths, girths, cross-sectional and surface areas, and volumes extracted from each scan. Differences in means and variability between the two groups were expressed as standardized effect sizes and ratios of coefficients of variation. Heavyweight rowers were generally much larger than the general population in absolute size, with 3D dimensions and height and mass showing the largest effects. In contrast, lightweight rowers were generally similar or smaller in absolute and proportional size. The dimensions of rowers, especially the lightweights, were also generally less variable than those of the general population. The greatest differences between elite rowers and the general population were seen in dimensions that could not be captured without 3D scanning, such as segmental volumes and cross-sectional areas. 相似文献
103.
Asha Lata Singh Vipin Kumar Singh Anushree Srivastava 《Indian journal of clinical biochemistry : IJCB》2013,28(4):422-425
Arsenic contamination of ground water has become a serious problem all over the world. Large number of people from Uttar Pradesh, Bihar and West Bengal of India are suffering due to consumption of arsenic contaminated drinking water. Study was carried out on 30 individuals residing in Ballia District, UP where the maximum concentration of arsenic was observed around 0.37 ppm in drinking water. Blood samples were collected from them to find out the problem related with arsenic. Cytogenetic study of the blood samples indicates that out of 30, two persons developed Klinefelter syndrome. 相似文献
104.
105.
Shivam Kumar 《Resonance》2007,12(10):18-29
In the first part of this article, we had introduced the notion of quadratic reciprocity and dwelt briefly on its history, which goes back all the way to the work of Fermat. Then we discussed the Law of Quadratic
Reciprocity (‘QRL’), which Gauss named Theorema Aureum. Following this, we gave a not too well known proof of the QRL, due to G Rousseau. Now we give two more proofs of the QRL,
drawing respectively from ideas in linear algebra and field extensions; they too are not very well known.
Shivam Kumar graduated from Indian Statistical Institute, Bangalore and is joining the London School of Economics for MSc
in applicable mathematics. His interest lies in expanding the existing applied paradigm of mathematics from stock market to
unchartered subjects such as sociometrics. 相似文献
106.
107.
In Part I, the nature of scalars and vectors was discussed for the Newtonian world. However, in the relativistic world, physical
quantities follow Lorentz transformations. This change of transformation from Galilean to Lorentz results in interesting distinctions
in their properties: mass and time are no longer scalars, time and space become intertwined, etc. This part discusses the
nature of scalars and vectors in the relativistic world. 相似文献
108.
This article discusses the Priority Education Zones project (ZEP) in Mauritius. The original and innovative dimensions of
the project are described, together with the difficulties encountered during the setting-up of the ZEP schools. The article
covers five main issues: the status of the ZEP project; the minimal conditions for success; the implications concerning the
teachers; the obstacles faced; and the strategy devised to implement the ZEP project, while overcoming the obstacles.
相似文献
Mahomed Aniff GurribEmail: |
109.
David D. Kumar 《Journal of Science Education and Technology》1993,2(3):481-485
Results of a HyperCard method for assessing the performance of expert and novice high school chemistry students solving stoichiometric chemistry problems (balancing chemical equations) have been reported. The assessment involved the use of a HyperCard instrument (Hyperequation) developed on a Macintosh platform to administer a set of five chemistry problems, register student responses, and collect data related to student performance. The chemistry problems have been previously tested and validated in traditional (pen-paper) assessment settings by other researchers. MANOVA results indicate a significant difference between the performance of expert and novice students solving the five stoichiometric chemistry problems using the Hyperequation. The study shows promise in that a HyperCard assessment method could differentiate between the performance of experts and novices in problem solving. The implication is that HyperCard might be a suitable technology for developing performance assessment methods not only in chemistry but also in other science disciplines. 相似文献
110.
Quality assurance strategies for affiliated institutions of HE: a case study of the affiliates under National University of Bangladesh 总被引:1,自引:0,他引:1
Gazi Mahabubul Alam Pradip Kumar Mishra Mirja Mohammad Shahjamal 《Higher Education》2014,68(2):285-301
Presently, education is considered as the main weapon for national development. However, this tenet has been challenged by several economists. Their findings give rise to a further question: whilst expansion of education increases globally, what is it exactly that continues to hinder a country’s progression? There is no short answer, but one major area of concern is the quality and relevance of the education available. Research for this paper, the first of its kind in Bangladesh, has been carried out by interviews and observation in the affiliates of the National University of Bangladesh, where 80 % of the students in higher education are the underprivileged. The findings show that the legislators ignore the fact that quality of education in the affiliates is perceived as important. 相似文献