全文获取类型
收费全文 | 1366篇 |
免费 | 33篇 |
国内免费 | 3篇 |
专业分类
教育 | 1076篇 |
科学研究 | 81篇 |
各国文化 | 19篇 |
体育 | 82篇 |
综合类 | 1篇 |
文化理论 | 28篇 |
信息传播 | 115篇 |
出版年
2023年 | 11篇 |
2022年 | 38篇 |
2021年 | 38篇 |
2020年 | 55篇 |
2019年 | 88篇 |
2018年 | 119篇 |
2017年 | 86篇 |
2016年 | 96篇 |
2015年 | 51篇 |
2014年 | 64篇 |
2013年 | 255篇 |
2012年 | 61篇 |
2011年 | 50篇 |
2010年 | 40篇 |
2009年 | 47篇 |
2008年 | 40篇 |
2007年 | 31篇 |
2006年 | 34篇 |
2005年 | 32篇 |
2004年 | 20篇 |
2003年 | 13篇 |
2002年 | 20篇 |
2001年 | 16篇 |
2000年 | 15篇 |
1999年 | 2篇 |
1998年 | 9篇 |
1997年 | 4篇 |
1996年 | 3篇 |
1994年 | 5篇 |
1993年 | 6篇 |
1992年 | 8篇 |
1991年 | 6篇 |
1990年 | 7篇 |
1989年 | 2篇 |
1988年 | 4篇 |
1987年 | 3篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1977年 | 1篇 |
1976年 | 2篇 |
1975年 | 1篇 |
1972年 | 2篇 |
1971年 | 2篇 |
1966年 | 1篇 |
1964年 | 2篇 |
1962年 | 1篇 |
1961年 | 1篇 |
1960年 | 1篇 |
1933年 | 2篇 |
排序方式: 共有1402条查询结果,搜索用时 15 毫秒
51.
52.
Fabricio Anicio de Magalhaes Giorgio Gatta Silvia Fantozzi 《Journal of sports sciences》2015,33(7):732-745
The use of contemporary technology is widely recognised as a key tool for enhancing competitive performance in swimming. Video analysis is traditionally used by coaches to acquire reliable biomechanical data about swimming performance; however, this approach requires a huge computational effort, thus introducing a delay in providing quantitative information. Inertial and magnetic sensors, including accelerometers, gyroscopes and magnetometers, have been recently introduced to assess the biomechanics of swimming performance. Research in this field has attracted a great deal of interest in the last decade due to the gradual improvement of the performance of sensors and the decreasing cost of miniaturised wearable devices. With the aim of describing the state of the art of current developments in this area, a systematic review of the existing methods was performed using the following databases: PubMed, ISI Web of Knowledge, IEEE Xplore, Google Scholar, Scopus and Science Direct. Twenty-seven articles published in indexed journals and conference proceedings, focusing on the biomechanical analysis of swimming by means of inertial sensors were reviewed. The articles were categorised according to sensor’s specification, anatomical sites where the sensors were attached, experimental design and applications for the analysis of swimming performance. Results indicate that inertial sensors are reliable tools for swimming biomechanical analyses. 相似文献
53.
Ursina Meyer Dominique Ernst Silvia Schott Claudia Riera Jan Hattendorf Jacqueline Romkes 《Journal of sports sciences》2015,33(16):1702-1709
The purpose of this study was to assess the validity of accelerometers using force plates (i.e., ground reaction force (GRF)) during the performance of different tasks of daily physical activity in children. Thirteen children (10.1 (range 5.4–15.7) years, 3 girls) wore two accelerometers (ActiGraph GT3X+ (ACT), GENEA (GEN)) at the hip that provide raw acceleration signals at 100 Hz. Participants completed different tasks (walking, jogging, running, landings from boxes of different height, rope skipping, dancing) on a force plate. GRF was collected for one step per trial (10 trials) for ambulatory movements and for all landings (10 trials), rope skips and dance procedures. Accelerometer outputs as peak loading (g) per activity were averaged. ANOVA, correlation analyses and Bland–Altman plots were computed to determine validity of accelerometers using GRF. There was a main effect of task with increasing acceleration values in tasks with increasing locomotion speed and landing height (P < 0.001). Data from ACT and GEN correlated with GRF (r = 0.90 and 0.89, respectively) and between each other (r = 0.98), but both accelerometers consistently overestimated GRF. The new generation of accelerometer models that allow raw signal detection are reasonably accurate to measure impact loading of bone in children, although they systematically overestimate GRF. 相似文献
54.
刘桉呐 《山西广播电视大学学报》2015,(2):61-64
《预算法》作为一国财政领域最为核心的法律,为现代财政制度构建了一个基础性的制度框架。文章以公共财政理论作为我国预算法律制度之基石,以公共预算作为我国预算法律制度发展之目标,着眼于公共财政视野下的预算法,指出预算法对构建社会主义市场经济秩序、制约政府的预算行为与维护纳税人的权益具有重要作用。进而对新预算法中存在的问题进行分析,并基于公共财政视野提出了完善我国预算法律制度的对策。 相似文献
55.
Category‐based induction is a hallmark of mature cognition; however, little is known about its origins. This study evaluated the hypothesis that category‐based induction is related to semantic development. Computational studies suggest that early on there is little differentiation among concepts, but learning and development lead to increased differentiation based on taxonomic relatedness. This study reports findings from a new task aimed to (a) examine this putative increase in semantic differentiation and (b) test whether individual differences in semantic differentiation are related to category‐based induction in 4‐ to 7‐year‐old children (N = 85). The results provide the first empirical evidence of an age‐related increase in differentiation of representations of animal concepts and suggest that category‐based induction is related to increased semantic differentiation. 相似文献
56.
Effects of Mexican Immigrant Parents’ Daily Workplace Discrimination on Child Behavior and Family Functioning 下载免费PDF全文
Anna Gassman‐Pines 《Child development》2015,86(4):1175-1190
This study investigated Mexican immigrant parents’ reports of perceived workplace discrimination and their children's behavior, parents’ moods, and parent–child interactions. Parents of one hundred and thirty‐eight 3‐ to 5‐year‐old children were asked to complete one survey daily for 2 weeks (N = 1,592 days). On days when fathers perceived discrimination, fathers and mothers reported more externalizing child behaviors, and mothers reported fewer positive child behaviors. When mothers perceived discrimination, they reported more externalizing child behaviors; fathers reported more internalizing child behaviors. Parents reported worse mood on days with perceived discrimination. Perceived discrimination was not strongly related to parent–child interactions. For fathers, but less so for mothers, those whose psychological acculturation indicated separation had more negative relations between daily perceived workplace discrimination and child and family outcomes. 相似文献
57.
This study compared and illustrated four differential distractor functioning (DDF) detection methods for analyzing multiple-choice items. The log-linear approach, two item response theory-model-based approaches with likelihood ratio tests, and the odds ratio approach were compared to examine the congruence among the four DDF detection methods. Data from a college-level mathematics placement test were analyzed to understand the causes of differential functioning. Results indicated some agreement among the four detection methods. To facilitate practical interpretation of the DDF results, several possible effect size measures were also obtained and compared. 相似文献
58.
Anna Ursyn 《Teaching Artist Journal》2015,13(4):204-217
Developing new criteria with which to assess work in new media arts. 相似文献
59.
Laura Crane Jade Davies Anne Fritz Sarah O’Brien Alison Worsley Anna Remington 《British Educational Research Journal》2022,48(1):22-48
Changes to special educational needs and disability (SEND) legislation in England were implemented in 2014. Here, we evaluate the impact of these changes from the perspective of 80 autistic young people aged 16–25 years. Using an online survey and/or interviews, we examined young people’s views on three key principles of the SEND reforms: the help and support provided to them; whether they were given a say in the choices and support that they were offered; and their satisfaction with their educational journeys and outcomes. The results paint a mixed picture. Our sample of young people reported varied experiences regarding the help and support they received, and how much of a say they had regarding the choices and support available to them. The types of schooling they accessed played a role here: young people in mainstream schools highlighted particular challenges in accessing appropriate support, while many young people in special schools said they felt well supported. Parental advocacy was crucial for all young people, as was having key ‘champions’ in the form of teachers who really knew them well. The need for the development of general life and self-advocacy skills was apparent, however, especially in preparing the young people for life after school. Encouragingly, most of our participants were generally happy with their current situation, despite identifying several areas for further improvement. Overall, the results highlight the importance of listening to—and learning from—autistic young people, throughout their educational journeys and especially as they transition to adulthood. 相似文献
60.