全文获取类型
收费全文 | 1653篇 |
免费 | 24篇 |
国内免费 | 16篇 |
专业分类
教育 | 1143篇 |
科学研究 | 187篇 |
各国文化 | 18篇 |
体育 | 199篇 |
综合类 | 28篇 |
文化理论 | 17篇 |
信息传播 | 101篇 |
出版年
2022年 | 19篇 |
2021年 | 27篇 |
2020年 | 32篇 |
2019年 | 54篇 |
2018年 | 74篇 |
2017年 | 63篇 |
2016年 | 66篇 |
2015年 | 36篇 |
2014年 | 49篇 |
2013年 | 180篇 |
2012年 | 59篇 |
2011年 | 49篇 |
2010年 | 40篇 |
2009年 | 44篇 |
2008年 | 45篇 |
2007年 | 60篇 |
2006年 | 60篇 |
2005年 | 49篇 |
2004年 | 48篇 |
2003年 | 93篇 |
2002年 | 125篇 |
2001年 | 114篇 |
2000年 | 68篇 |
1999年 | 24篇 |
1998年 | 14篇 |
1997年 | 17篇 |
1996年 | 12篇 |
1995年 | 15篇 |
1994年 | 10篇 |
1993年 | 13篇 |
1992年 | 7篇 |
1991年 | 11篇 |
1990年 | 10篇 |
1989年 | 4篇 |
1988年 | 4篇 |
1987年 | 8篇 |
1986年 | 4篇 |
1985年 | 9篇 |
1984年 | 8篇 |
1983年 | 4篇 |
1982年 | 6篇 |
1981年 | 3篇 |
1980年 | 4篇 |
1978年 | 8篇 |
1974年 | 3篇 |
1973年 | 4篇 |
1967年 | 4篇 |
1887年 | 3篇 |
1865年 | 4篇 |
1838年 | 2篇 |
排序方式: 共有1693条查询结果,搜索用时 15 毫秒
51.
For the past few years a discussion has been going on about the specific skills and knowledge a complete engineer should possess. Apart form this discussion, a separate debate has focused on the content of an engineer's education. This article is a combination of two joint papers (De Graaff and Ravesteijn 2000, Ravesteijn and De Graaff 2000) bearing on these respective subjects, presented by the authors at the SEFI 2000 conference in Paris. The demands from industry that engineers of the future will have to meet are summarized and related to characteristics of modern training methods. It is argued that a new view on the content of the engineer's education implies, at least to a certain extent, a new set of educational tools. 相似文献
52.
在研发驱动的内生经济增长理论的框架内,对企业研发竞争行为和政府研发政策的最新研究进展进行了深入探讨,并结合我国产业现状指出政府为产业领先者提供补贴并对新的产业领先企业的利润征税能使社会福利达到最优。 相似文献
53.
54.
Veenstra R Lindenberg S Zijlstra BJ De Winter AF Verhulst FC Ormel J 《Child development》2007,78(6):1843-1854
For this study, information on Who Bullies Who was collected from 54 school classes with 918 children (M age = 11) and 13,606 dyadic relations. Bullying and victimization were viewed separately from the point of view of the bully and the victim. The two perspectives were highly complementary. The probability of a bully-victim relationship was higher if the bully was more dominant than the victim, and if the victim was more vulnerable than the bully and more rejected by the class. In a bully-victim dyad, boys were more often the bullies. There was no finding of sex effect for victimization. Liking reduced and disliking increased the probability of a bully-victim relationship. 相似文献
55.
Brosens Dorien Croux Flore De Donder Liesbeth 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2019,65(5):735-754
International Review of Education - This article examines the profile of prisoners who do not take part in formal education while being incarcerated (e.g. language or ICT courses) and the barriers... 相似文献
56.
Sara Manganelli Elisa Cavicchiolo Luca Mallia Valeria Biasi Fabio Lucidi Fabio Alivernini 《教育心理学》2019,39(4):470-488
The present study examined the interplay between self-determined motivation and the use of cognitive strategies in predicting university students’ academic performance while taking into account the effect of prior achievement. A theory based model was tested using structural equation modeling on a sample of 764 Italian university students. Results showed that prior achievement influenced students’ academic performance and their motivation and use of cognitive strategies. Critical thinking was the only cognitive strategy which proved to have a significant impact on students’ academic performance. Autonomous motivation had an indirect positive impact on academic performance through its influence on the critical thinking strategy. Controlled motivation had a direct negative impact on academic performance. On the whole, our findings suggest that autonomously motivated students tend to achieve better academic performance by using critical thinking, while students who are driven by controlled motivation have lower academic performance. 相似文献
57.
Research in Science Education - The first phase of this multiphase study involves modeling of college students’ thinking of friction at the microscopic level. Diagnostic interviews were... 相似文献
58.
Mikhail Santos Cerqueira Jose Diego Sales Do Nascimento Daniel Germano Maciel Jean Artur Mendonca Barboza Wouber Herickson De Brito Vieira 《运动与健康科学(英文)》2020,9(2):152-159
Purpose:To investigate whether blood flow restriction(BFR) without concomitant exercise mitigated strength reduction and atrophy of thigh muscles in subjects under immobilization for lower limbs.Methods:The following databases were searched:PubMed,CINAHL,PEDro,Web of Science,Central,and Scopus.Results:The search identified 3 eligible studies,and the total sample in the identified studies consisted of 38 participants.Isokinetic and isometric torque of the knee flexors and extensors was examined in 2 studies.Cross-sectional area of thigh muscles was evaluated in 1 study,and thigh girth was measured in 2 studies.The BFR protocol was 5 sets of 5 min of occlusion and 3 min of free flow,twice daily for approximately 2 weeks.As a whole,the included studies indicate that BFR without exercise is able to minimize strength reduction and muscular atrophy after immobilization.It is crucial to emphasize,however,that the included studies showed a high risk of bias,especially regarding allocation concealment,blinding of outcome assessment,intention-to-treat analyses,and group similarity at baseline.Conclusion:Although potentially useful,the high risk of bias presented by original stodies limits the indication of BFR without concomitant exercise as an effective countermeasure against strength reduction and atrophy mediated by immobilization. 相似文献
59.
Thibaut Méline Ludovic Mathieu Fabio Borrani Robin Candau 《Journal of sports sciences》2019,37(3):347-355
This study aimed to evaluate the effect of simulated training strategies on performance potential in elite short-track speed skaters. Training load and field-based criterion performances from fifteen athletes (10 males, 5 females) were collected over a 3-month training period and the relationship between training loads and performance was computed with a variable dose-response model using a genetic algorithm. Individual simulations of tapers preceded or not preceded by an overload training (OT) were assessed. We obtained a significant correlation between actual and modelled performances (R2 = 0.76 ± 0.07). Regarding model parameters, no significant difference was found between males and females but the time to recover performance tended to be lower in females. Simulations in which the taper parameters were free highlighted that an exponential or a step taper were the most effective for increasing performance compared to a linear taper (p < 0.05). Optimal exponential taper duration after OT was 10.7 ± 2.4d and the optimal load reduction was 75.9 ± 3.7%. OT intensity had the greatest influence on the predicted performance, followed by OT duration, taper decay, and to a lesser extent load reduction during taper and taper duration. Thus, a variable dose-response systems model allows the evaluation of different taper strategies and their potential effect on performance changes. 相似文献