全文获取类型
收费全文 | 12220篇 |
免费 | 148篇 |
国内免费 | 9篇 |
专业分类
教育 | 8428篇 |
科学研究 | 1409篇 |
各国文化 | 133篇 |
体育 | 932篇 |
综合类 | 5篇 |
文化理论 | 137篇 |
信息传播 | 1333篇 |
出版年
2021年 | 101篇 |
2020年 | 162篇 |
2019年 | 288篇 |
2018年 | 345篇 |
2017年 | 374篇 |
2016年 | 340篇 |
2015年 | 202篇 |
2014年 | 280篇 |
2013年 | 2499篇 |
2012年 | 227篇 |
2011年 | 226篇 |
2010年 | 204篇 |
2009年 | 218篇 |
2008年 | 235篇 |
2007年 | 225篇 |
2006年 | 211篇 |
2005年 | 170篇 |
2004年 | 162篇 |
2003年 | 150篇 |
2002年 | 143篇 |
2001年 | 158篇 |
2000年 | 162篇 |
1999年 | 140篇 |
1998年 | 101篇 |
1997年 | 107篇 |
1996年 | 110篇 |
1995年 | 98篇 |
1994年 | 121篇 |
1993年 | 122篇 |
1992年 | 158篇 |
1991年 | 157篇 |
1990年 | 152篇 |
1989年 | 157篇 |
1988年 | 129篇 |
1987年 | 139篇 |
1986年 | 144篇 |
1985年 | 167篇 |
1984年 | 159篇 |
1983年 | 141篇 |
1982年 | 114篇 |
1981年 | 123篇 |
1980年 | 100篇 |
1979年 | 144篇 |
1978年 | 147篇 |
1977年 | 101篇 |
1976年 | 98篇 |
1975年 | 89篇 |
1974年 | 82篇 |
1973年 | 97篇 |
1972年 | 85篇 |
排序方式: 共有10000条查询结果,搜索用时 156 毫秒
91.
92.
Mirva Rottensteiner Sara Mäkelä Leonie H. Bogl Timo Törmäkangas Jaakko Kaprio Urho M. Kujala 《European Journal of Sport Science》2017,17(9):1184-1193
Purpose: The benefits of physical activity (PA) in preventing abdominal obesity are well recognized, but the role of different sport disciplines remains open. We aimed, therefore, to investigate how participation in different sport disciplines, and the number and types of sports engaged in are associated with waist circumference (WC) in young adulthood. Methods: This population-based cohort study comprised 4027 Finnish twin individuals (1874 men), with a mean age of 34 y (32–37), who answered a survey, including self-measured WC. We extracted the number and identified the types (aerobic, power, and mixed) of the different sport disciplines respondents reported participating in. Results: The number of sport disciplines participated in was inversely associated with WC, the linear decrease averaging 1.38?cm (95% CI 1.10–1.65) per each additional sport discipline. The result persisted after adjustment for the main covariates, such as volume of PA and diet quality. Among dizygotic twin pairs discordant for sports participation (0–2 vs. 5 or more disciplines), the mean within-pair difference in WC was 4.8?cm (95% CI 0.4–9.1) for men and 11.2?cm (95% CI 4.4–18.0) for women; among discordant monozygotic pairs, no differences were observed. In men, all three types of sports were individually associated with smaller WC, while in women, only mixed and power sports showed this association. Conclusions: Participation in several sport disciplines and sport types was associated with smaller WC among young adults in their mid-30s. Shared genetic background may explain some of the associations. 相似文献
93.
Winfried Nöth 《Journal of Philosophy of Education》2014,48(3):446-456
In several of his papers, Charles S. Peirce illustrates processes of interpreting and understanding signs by examples from second language vocabulary teaching and learning. The insights conveyed by means of these little pedagogical scenarios are not meant as contributions to the psychology of second language learning, but they aim at elucidating fundamental semiotic implications of knowledge acquisition in general. Peirce's semiotic premise that a well‐understood sign is one that represents an object and creates an interpretant is essential to the understanding of how new words and signs in general can be taught and learned. The article argues that Peirce's theory of the object of the sign, especially of the necessity of collateral experience of the object of a sign, can help to understand the riddle posed by of the Meno paradox of the impossibility of learning what we do not yet know. It examines the semiotic implications of the didactic methods of teaching and learning through translation, ostension, mental and real images, as well as metacognition, and it shows how icons, indices, and symbols are essential to learning new words. 相似文献
94.
95.
Israel Halperin Dale W. Chapman David T. Martin Chris Abbiss 《Journal of sports sciences》2017,35(5):500-507
Research indicates that instructing athlete’s to focus on bodily movements (internal focus of attention [IFA]) may hinder performance, whereas instructing them to focus on the movement outcome (external focus of attention [EFA]) often enhances performance. Despite the importance of instructions in striking combat sports, limited research has examined the influence of IFA and EFA on performance in well-trained combat athletes. This study investigated the effects of different instructional cues on punching velocity (m · s?1) and normalised impact forces (N · kg?1) among intermediate (n = 8) and expert (n = 7) competitive boxers and kickboxers. Athletes completed three rounds of 12 maximal effort punches delivered to a punching integrator on three separate days. Day one was a familiarisation session with only control instructions provided. In the following two days athletes randomly received IFA, EFA or control instructions prior to each of the three rounds. Athletes punching with EFA were 4% faster and 5% more forceful than IFA (P < 0.05), and 2% faster and 3% more forceful than control (P < 0.05). Furthermore, experts punched 11% faster and with 13% greater force compared with intermediate athletes (P < 0.05). EFA led to a positive effect on punching performance and should be favoured over IFA and control instructions. 相似文献
96.
97.
98.
99.
Quality of Life of Children with Learning Disabilities: A Comparison of Self‐Reports and Proxy Reports 下载免费PDF全文
Halis Sakız Zeynep Hande Sart Bengü Börkan Barış Korkmaz Nalan Babür 《Learning disabilities research & practice》2015,30(3):114-126
This study aimed to explore how children with learning disabilities (LD) perceive their quality of life (QoL) and to compare self‐reports and proxy reports regarding their QoL. Children with LD, their typically developing peers, their parents and teachers responded to the child, parent, and teacher forms of KINDLR Questionnaire for Measuring Health‐Related Quality of Life (Ravens‐Sieberer & Bullinger, 1998). Findings showed that children with LD reported significantly lower QoL scores than those reported by typically developing peers. Intraclass correlation coefficients (ICCs) and t‐test results showed that agreement between child reports and parent‐proxy reports was either low or moderate on each QoL dimension. Findings of the study may be used to raise awareness regarding the social and educational needs of children with LD in Turkey. 相似文献
100.