全文获取类型
收费全文 | 1707篇 |
免费 | 33篇 |
专业分类
教育 | 1304篇 |
科学研究 | 73篇 |
各国文化 | 6篇 |
体育 | 215篇 |
综合类 | 1篇 |
文化理论 | 40篇 |
信息传播 | 101篇 |
出版年
2023年 | 13篇 |
2022年 | 32篇 |
2021年 | 39篇 |
2020年 | 51篇 |
2019年 | 115篇 |
2018年 | 143篇 |
2017年 | 127篇 |
2016年 | 132篇 |
2015年 | 59篇 |
2014年 | 79篇 |
2013年 | 316篇 |
2012年 | 55篇 |
2011年 | 38篇 |
2010年 | 52篇 |
2009年 | 37篇 |
2008年 | 29篇 |
2007年 | 29篇 |
2006年 | 27篇 |
2005年 | 19篇 |
2004年 | 24篇 |
2003年 | 22篇 |
2002年 | 21篇 |
2001年 | 18篇 |
2000年 | 9篇 |
1999年 | 8篇 |
1998年 | 11篇 |
1997年 | 14篇 |
1996年 | 10篇 |
1995年 | 12篇 |
1994年 | 13篇 |
1993年 | 8篇 |
1992年 | 10篇 |
1991年 | 7篇 |
1990年 | 7篇 |
1989年 | 8篇 |
1988年 | 6篇 |
1987年 | 7篇 |
1985年 | 13篇 |
1984年 | 12篇 |
1982年 | 8篇 |
1981年 | 5篇 |
1980年 | 5篇 |
1979年 | 7篇 |
1978年 | 8篇 |
1974年 | 5篇 |
1973年 | 9篇 |
1972年 | 6篇 |
1970年 | 4篇 |
1957年 | 5篇 |
1956年 | 5篇 |
排序方式: 共有1740条查询结果,搜索用时 0 毫秒
131.
Fredrik Karlsson Jesper Holgersson Eva Söderström Karin Hedström 《Government Information Quarterly》2012
It has been argued that user participation is important when public authorities develop e-services. At the same time there is limited research on the usefulness of existing user participation approaches in public e-service development. In this paper we, therefore, analyze how the three user participation approaches – participatory design, user-centered design, and user innovation – meet the strategic e-service goals of the EU and the US. In doing so, we identify three challenges that need to be considered when choosing among these approaches: 1) unclear user target segments can impede the fulfillment of usability and relevance goals, 2) the nature of participation can impede the fulfillment of democracy goals, and 3) lack of adequate skills can impede the fulfillment of efficiency goals. 相似文献
132.
133.
134.
135.
136.
137.
138.
Marco?A.?HaanEmail author S.?Gerhard?Dijkstra Peter?T.?Dijkstra 《Journal of Cultural Economics》2005,29(1):59-78
For centuries, there have been discussions as to whether only experts can judge the quality of cultural output, or whether the taste of the public also has merit. This paper tries to answer that question empirically, using national finals of the Eurovision Song Contest. We show that experts are better judges of quality in the sense that the outcome of finals judged by experts is less sensitive to factors unrelated to quality than the outcome of finals judged by public opinion. Yet, experts are not perfect; their judgment does still depend on such factors. This is also the case in the European finals of the contest. 相似文献
139.
140.
M Martín-Matillas FB Ortega JR Ruiz D Martínez-Gómez G Vicente-Rodríguez A Marcos L Béghin A Kafatos M González-Gross M Zaccaria D Molnár S De Henauw M Sjöström LA Moreno MJ Castillo On Behalf Of The Helena Study 《Journal of sports sciences》2012,30(13):1329-1335
Abstract High physical fitness in childhood and adolescence is positively associated with favourable health-related outcomes. Our aim was to examine the relationship between relatives' (father, mother, brother, sister, and best friend) physical activity engagement and encouragement on adolescents' physical fitness. Adolescents were part of the HELENA study, a multi-centre study conducted in 10 cities from nine European countries in 2006-2008. Participants were 3288 adolescents (48% boys, 52% girls) aged 12.5-17.5 years with valid data on at least one of the three fitness variables studied: muscular strength (standing long jump), speed/agility (4×10 m shuttle run), and cardiorespiratory fitness (20 m shuttle run). The adolescents reported their relatives' physical activity engagement and encouragement. Analysis of covariance showed that relatives' physical activity engagement (father, mother, brother, and best friend) was positively related to cardiorespiratory fitness (P?0.05); and mother's and sisters' physical activity engagement were positively associated with higher muscular strength in adolescents (P?0.05). Furthermore, father's physical activity encouragement was positively linked to physical fitness (all fitness components) in adolescents (P?0.05). Interventions aimed at improving physical fitness in young people might be more successful when family members, particularly mothers and fathers, are encouraged to engage in physical activity and support adolescents' physical activity. 相似文献