全文获取类型
收费全文 | 2128篇 |
免费 | 31篇 |
国内免费 | 1篇 |
专业分类
教育 | 1556篇 |
科学研究 | 119篇 |
各国文化 | 19篇 |
体育 | 269篇 |
文化理论 | 51篇 |
信息传播 | 146篇 |
出版年
2023年 | 20篇 |
2022年 | 40篇 |
2021年 | 61篇 |
2020年 | 95篇 |
2019年 | 178篇 |
2018年 | 194篇 |
2017年 | 184篇 |
2016年 | 150篇 |
2015年 | 101篇 |
2014年 | 83篇 |
2013年 | 485篇 |
2012年 | 67篇 |
2011年 | 59篇 |
2010年 | 49篇 |
2009年 | 33篇 |
2008年 | 23篇 |
2007年 | 30篇 |
2006年 | 31篇 |
2005年 | 21篇 |
2004年 | 18篇 |
2003年 | 21篇 |
2002年 | 13篇 |
2001年 | 14篇 |
2000年 | 11篇 |
1999年 | 13篇 |
1998年 | 9篇 |
1997年 | 8篇 |
1996年 | 10篇 |
1995年 | 10篇 |
1994年 | 8篇 |
1993年 | 9篇 |
1992年 | 7篇 |
1991年 | 9篇 |
1990年 | 13篇 |
1989年 | 4篇 |
1988年 | 3篇 |
1987年 | 7篇 |
1986年 | 8篇 |
1985年 | 6篇 |
1984年 | 3篇 |
1981年 | 4篇 |
1980年 | 3篇 |
1979年 | 4篇 |
1978年 | 7篇 |
1977年 | 5篇 |
1976年 | 4篇 |
1974年 | 2篇 |
1973年 | 4篇 |
1970年 | 3篇 |
1963年 | 3篇 |
排序方式: 共有2160条查询结果,搜索用时 15 毫秒
71.
H. Drábková 《High Ability Studies》1991,1(2):191-196
A cohort of 71 pairs of twins was studied in a project which started within the decade 1965 to 1975. The total level of intelligence (global IQ) and the level of particular intellectual components have been examined annually since the twins were two years of age. The data were analysed by comparing monozygotic and dizygotic twins. The results revealed that high intelligence is influenced much more by hereditary than exogenous factors. Furthermore, there is an irregularity in the development of intellectual level from childhood to adulthood. Consequently, decision making about children cannot be carried out on the basis of a single IQ evaluation. A cluster analysis demonstrated the importance of hereditary factors not only on intellectual level, but also on the pattern of intellectual development. 相似文献
72.
73.
74.
González-Forte Juan Manuel Fernández Ceneida Van Hoof Jo Van Dooren Wim 《European Journal of Psychology of Education - EJPE》2020,35(3):549-565
European Journal of Psychology of Education - Understanding rational numbers is a complex task for primary and secondary school students. Previous research has shown that a possible reason is... 相似文献
75.
76.
77.
78.
79.
Dagmar Sigmundová Petr Badura Erik Sigmund Jens Bucksch 《European Journal of Sport Science》2018,18(8):1158-1167
This study assessed the associations between these factors in a random sample of Czech families with preschool and school-aged children. A nationally representative sample comprised 185 families with preschool children and 649 families with school-aged children (dyads; both parents and child n?=?365, mother and child n?=?730, and father and child n?=?469). The participants wore Yamax Digiwalker SW-200 pedometers at least four weekdays and both weekend days and completed family logbooks (anthropometric parameters, daily step counts (SC), and screen time (ST)). When a parent (fathers at weekends and mothers both on weekdays and at weekends) achieved 10,000 SC per day, their children were also significantly (OR?=?2.93–6.06, 95% CI?=?2.02–9.26) more likely to meet the daily SC recommendation. On the contrary, the involvement of fathers in organized leisure-time PA reduced their children's odds of meeting the SC recommendation on weekdays (OR?=?0.53, 95% CI?=?0.31–0.89) and at weekends (OR?=?0.41, 95% CI?=?0.24–0.72). The excessive ST of parents at weekends reduced the odds of their children meeting the SC recommendation (mother–child dyads: OR?=?0.44, 95% CI?=?0.26–0.72; father–child dyads: OR?=?0.63, 95% CI?=?0.37–1.06). High levels of parents’ PA contribute to the achievement of the recommended daily PA in children on weekdays and at weekends. Excessive weekend ST of parents reduces their odds of their children achieving the recommended daily PA; however, the influence of parents’ PA on their children’s achieving the recommended daily PA is stronger than the inhibitory effect of ST. 相似文献
80.
Wendell Arthur Lopes Neiva Leite Larissa Rosa da Silva Diego Trevisan Brunelli Arthur Fernandes Gáspari Rosana Bento Radominski 《Journal of sports sciences》2016,34(20):1902-1912
The objective of the present study was to investigate the effects of combined training without caloric restriction on inflammatory markers in overweight girls. Thirty-three girls (13–17 years) were assigned into overweight training (n = 17) or overweight control (n = 16) groups. Additionally, a normal-weight group (n = 15) was used as control for the baseline values. The combined training programme consisted of six resistance exercises (three sets of 6–10 repetitions at 60–70% 1 RM) followed by 30 min of aerobic exercise (walking/running) at 50–80% VO2peak, performed in the same 60 min session, 3 days/weeks, for 12 weeks. Body composition, dietary intake, aerobic fitness (VO2peak), muscular strength (1 RM), glycaemia, insulinemia, lipid profile and inflammatory markers (C-reactive protein, interleukin-6, tumour necrosis factor-alpha, interleukin-10, leptin, resistin and adiponectin) were measured before and after intervention. There was a significant decrease in body fat (P < 0.01) and increase in fat-free mass (P < 0.01), VO2peak (P < 0.01), 1 RM for leg press (P < 0.01) and bench press (P < 0.01) in the overweight training group. Concomitantly, this group presented significant decreases in serum concentrations of C-reactive protein (P < 0.05) and leptin (P < 0.05), as well as in insulin resistance (P < 0.05) after the experimental period. In conclusion, 12 weeks of combined training without caloric restriction reduced inflammatory markers associated with obesity in overweight girls. 相似文献