全文获取类型
收费全文 | 2614篇 |
免费 | 58篇 |
国内免费 | 1篇 |
专业分类
教育 | 2201篇 |
科学研究 | 35篇 |
各国文化 | 39篇 |
体育 | 86篇 |
综合类 | 1篇 |
文化理论 | 7篇 |
信息传播 | 304篇 |
出版年
2021年 | 39篇 |
2020年 | 41篇 |
2019年 | 65篇 |
2018年 | 84篇 |
2017年 | 95篇 |
2016年 | 97篇 |
2015年 | 69篇 |
2014年 | 99篇 |
2013年 | 558篇 |
2012年 | 83篇 |
2011年 | 81篇 |
2010年 | 63篇 |
2009年 | 85篇 |
2008年 | 90篇 |
2007年 | 75篇 |
2006年 | 53篇 |
2005年 | 70篇 |
2004年 | 84篇 |
2003年 | 55篇 |
2002年 | 46篇 |
2001年 | 43篇 |
2000年 | 49篇 |
1999年 | 49篇 |
1998年 | 34篇 |
1997年 | 37篇 |
1996年 | 46篇 |
1995年 | 34篇 |
1994年 | 39篇 |
1993年 | 32篇 |
1992年 | 44篇 |
1991年 | 32篇 |
1990年 | 28篇 |
1989年 | 16篇 |
1988年 | 17篇 |
1987年 | 13篇 |
1986年 | 16篇 |
1985年 | 17篇 |
1984年 | 17篇 |
1983年 | 17篇 |
1982年 | 13篇 |
1981年 | 18篇 |
1980年 | 12篇 |
1979年 | 11篇 |
1978年 | 10篇 |
1976年 | 9篇 |
1975年 | 9篇 |
1974年 | 8篇 |
1971年 | 8篇 |
1970年 | 13篇 |
1969年 | 8篇 |
排序方式: 共有2673条查询结果,搜索用时 15 毫秒
111.
Susanne Schulz Stefanie Nelemans Hana Hadiwijaya Theo Klimstra Elisabetta Crocetti Susan Branje Wim Meeus 《Child development》2023,94(1):7-27
Positive peer and romantic relationships are crucial for adolescents' positive adjustment and relationships with parents lay the foundation for these relationships. This longitudinal meta-analysis examined how parent–adolescent relationships continue into later peer and romantic relationships. Included longitudinal studies (k = 54 involving peer relationships, k = 38 involving romantic relationships) contained demographically diverse samples from predominantly Western cultural contexts. Multilevel meta-regressions indicated that supportive and negative parent–adolescent relationships were associated with supportive and negative future peer and romantic relationships. Meta-analytic structural equation modeling (k = 54) indicated that supportive parent–adolescent relationships unidirectionally predicted supportive and negative peer relationships, while negative parent–adolescent relationships were bidirectionally associated with supportive and negative peer relationships. Maintaining mutually supportive relationships with parents may help adolescents to develop positive social relationships. 相似文献
112.
Clark A. Chinn Susan A. Yoon Huma Hussain-Abidi Kyle Hunkar Noora F. Noushad Amanda M. Cottone Thomas Richman 《European Journal of Education》2023,58(3):407-421
An important goal of science education is promoting scientific literacy—the competence to interact with science as laypeople to solve problems and make decisions in their personal and community lives. This is made more challenging in an age of increasing science denialism. In this article, we discuss how to design learning environments for science education that can help students attain scientific literacy. We argue that science curricula should encompass lessons with two distinguishable foci. One focus engages students in understanding the reliability of science. The second focus engages students as laypeople interacting with science in the public sphere. We discuss these two curricular foci, presenting examples from our own work on designing and implementing instruction with the first focus. 相似文献
113.
Emergence of new industries from evolving technologies is critical to the global economy, yet has been relatively understudied due to the paucity of available data. This study draws lessons on industry emergence, by analyzing how a solid-state lighting (SSL) industry grew out of light emitting diode (LED) technologies that evolved for half a century, with participation by tens of thousands of researchers in universities, national laboratories, and firms. Using data on publications, patents, and firms combined with business history we trace the evolution of SSL through a succession of market niches. At times a few researchers with unorthodox research approaches made breakthroughs that greatly advanced particular technology trajectories and pushed LED research in unexpected directions. A succession of LED market niches advanced the technology and provided profits to incentivize continuing research while reducing cost and improving efficacy of LEDs. Innovating firms developed a thicket of patents and captured substantial profit, but were embroiled in extensive litigation that was ultimately resolved through cross-licensing. A major new generation of lighting products is now disrupting the traditional lighting industry. Although the leading incumbent lighting firms all invested early and heavily in SSL, the industry's future leadership is uncertain. 相似文献
114.
115.
116.
117.
118.
119.
120.
Daniel W. Kee Susan Nakayama Siaw Linda Carter 《Contemporary educational psychology》1985,10(3):268-274
An experiment was conducted to evaluate constructive memory in fourth-grade low-SES black and middle-SES white children. The children were read nine short passages; each passage was composed of two premise statements and a filler sentence. The children were tested by a recognition procedure. Thirty-six test sentences were presented randomly. Four sentences were associated with each passage (true premise, false premise, true inference, and false inference). Subjects were asked to make yes/no recognition decisions based on whether the test sentence was identical to a sentence presented at study. Middle-SES white children made few errors, except to true inference test sentences. This pattern of performance is consistent with the constructive view of memory. Low-SES black children also had a high error rate to true inference items. However, this outcome may not reflect constructive memory because they also had a high error rate to some of the other types of test sentences. 相似文献