全文获取类型
收费全文 | 3101篇 |
免费 | 42篇 |
国内免费 | 1篇 |
专业分类
教育 | 2270篇 |
科学研究 | 204篇 |
各国文化 | 29篇 |
体育 | 358篇 |
综合类 | 2篇 |
文化理论 | 70篇 |
信息传播 | 211篇 |
出版年
2023年 | 28篇 |
2022年 | 60篇 |
2021年 | 88篇 |
2020年 | 127篇 |
2019年 | 237篇 |
2018年 | 259篇 |
2017年 | 246篇 |
2016年 | 197篇 |
2015年 | 147篇 |
2014年 | 125篇 |
2013年 | 682篇 |
2012年 | 105篇 |
2011年 | 89篇 |
2010年 | 72篇 |
2009年 | 54篇 |
2008年 | 51篇 |
2007年 | 56篇 |
2006年 | 50篇 |
2005年 | 42篇 |
2004年 | 35篇 |
2003年 | 37篇 |
2002年 | 29篇 |
2001年 | 19篇 |
2000年 | 17篇 |
1999年 | 19篇 |
1998年 | 15篇 |
1997年 | 14篇 |
1996年 | 18篇 |
1995年 | 15篇 |
1994年 | 13篇 |
1993年 | 15篇 |
1992年 | 13篇 |
1991年 | 18篇 |
1990年 | 15篇 |
1989年 | 6篇 |
1988年 | 9篇 |
1987年 | 11篇 |
1986年 | 8篇 |
1985年 | 8篇 |
1984年 | 7篇 |
1983年 | 5篇 |
1981年 | 6篇 |
1979年 | 8篇 |
1978年 | 7篇 |
1977年 | 8篇 |
1976年 | 7篇 |
1975年 | 4篇 |
1973年 | 5篇 |
1970年 | 5篇 |
1963年 | 4篇 |
排序方式: 共有3144条查询结果,搜索用时 15 毫秒
911.
Otero-Mayer Andrea González-Benito Ana Gutiérrez-de-Rozas Belén Vélaz-de-Medrano Consuelo 《Early Childhood Education Journal》2021,49(5):977-985
Early Childhood Education Journal - Given the closure of schools due to the global confinement resulting from the COVID-19 crisis, family-school cooperation has become a priority in most... 相似文献
912.
Yang Xiaotong Rahimi Seyedahmad Shute Valerie Kuba Renata Smith Ginny Alonso-Fernández Cristina 《Educational technology research and development : ETR & D》2021,69(2):1055-1075
Educational technology research and development - In-game learning supports aim to help students solve game levels (i.e., game-related supports), and connect to underlying content (i.e.,... 相似文献
913.
Almerich Gonzalo Suárez-Rodríguez Jesús Díaz-García Isabel Orellana Natividad 《Education and Information Technologies》2021,26(4):3845-3869
Education and Information Technologies - University students have to master new competences to be able to completely form part of Knowledge Society, which are known as 21st-century competences.... 相似文献
914.
Rojas-Franco Placido Franco-Colín Margarita Blas-Valdivia Vanessa Melendez-Camargo María Estela Cano-Europa Edgar 《Journal of Zhejiang University. Science. B》2021,22(7):603-608
正Arthrospira maxima (Spirulina) is a cyanobacterium which is considered a nutraceutical because it has antioxidant, anti-inflammatory, and cytoprotective properties in different renal disease models (RodriguezSánchez et al., 2012; Aziz et al., 2018; Memije-Lazaro et al., 2018). 相似文献
915.
916.
917.
Vicente P. Guerrero-Bote Felipe Zapico-Alonso María Eugenia Espinosa-Calvo Rocío Gmez Crisstomo Flix de Moya-Anegn 《Information processing & management》2006,42(6):1484
The Pathfinder algorithm is widely used to prune social networks. The pruning maintains the geodesic distances between nodes. It has shown itself to be very useful in the analysis of, amongst others, citations in BIS (bibliometrics, informetrics, and scientometrics). It has even been proposed for the online display of the search results in an information retrieval system. However, its great time and space complexity limits its use in real-time applications and in networks of any considerable size.The present work describes an improved algorithm with considerably reduced time and space complexity. Its lower execution costs thus increase its applicability both in real time and to large networks. 相似文献
918.
Siobhán O’Mahony 《Research Policy》2003,32(7):1179-1198
Theorists often speculate why open source and free software project contributors give their work away. Although contributors make their work publicly available, they do not forfeit their rights to it. Community managed software projects protect their work by using several legal and normative tactics, which should not be conflated with a disregard for or neglect of intellectual property rights. These tactics allow a project’s intellectual property to be publicly and freely available and yet, governable. Exploration of this seemingly contradictory state may provide new insight into governance models for the management of digital intellectual property. 相似文献
919.
920.
This study examined how intergroup processes and social-cognitive factors shape bystander responses to bias-based and general bullying. Participants included sixth and ninth graders (N = 179, M = 13.23) who evaluated how likely they would be to intervene if they observed bullying of immigrant-origin and nonimmigrant-origin peers. Adolescents’ grade, intergroup attitudes, and social-cognitive abilities were evaluated as predictors of bystander responses. Nonimmigrant-origin adolescents reported that they expect they would be less likely to intervene when the victim is an immigrant-origin peer. Furthermore, participants with more intergroup contact and higher theory of mind were more likely to expect they would intervene in response to bias-based bullying. Findings have important implications for understanding factors that inform antibullying interventions that aim to tackle bias-based bullying against immigrants. 相似文献