全文获取类型
收费全文 | 738篇 |
免费 | 13篇 |
国内免费 | 8篇 |
专业分类
教育 | 442篇 |
科学研究 | 88篇 |
各国文化 | 28篇 |
体育 | 117篇 |
综合类 | 13篇 |
文化理论 | 3篇 |
信息传播 | 68篇 |
出版年
2023年 | 4篇 |
2022年 | 5篇 |
2021年 | 18篇 |
2020年 | 23篇 |
2019年 | 37篇 |
2018年 | 43篇 |
2017年 | 35篇 |
2016年 | 31篇 |
2015年 | 29篇 |
2014年 | 20篇 |
2013年 | 122篇 |
2012年 | 31篇 |
2011年 | 33篇 |
2010年 | 31篇 |
2009年 | 27篇 |
2008年 | 24篇 |
2007年 | 30篇 |
2006年 | 19篇 |
2005年 | 22篇 |
2004年 | 13篇 |
2003年 | 27篇 |
2002年 | 29篇 |
2001年 | 19篇 |
2000年 | 15篇 |
1999年 | 3篇 |
1998年 | 4篇 |
1997年 | 3篇 |
1996年 | 5篇 |
1995年 | 2篇 |
1994年 | 3篇 |
1992年 | 2篇 |
1991年 | 3篇 |
1989年 | 3篇 |
1988年 | 2篇 |
1985年 | 3篇 |
1984年 | 4篇 |
1983年 | 6篇 |
1982年 | 3篇 |
1980年 | 2篇 |
1979年 | 4篇 |
1978年 | 2篇 |
1977年 | 4篇 |
1976年 | 2篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1969年 | 1篇 |
1963年 | 2篇 |
1957年 | 1篇 |
1955年 | 1篇 |
1875年 | 1篇 |
排序方式: 共有759条查询结果,搜索用时 15 毫秒
691.
史本林 《周口师范学院学报》2000,(3)
文章在综述河南旅游资源发展状况后指出 ,河南旅游资源开发至今没有摆脱粗放型经营方式 ,并对河南旅游资源开发提出了一系列对策 相似文献
692.
基于深度学习算法的进步,人工智能逐渐有能力独立进行发明创造和文艺作品创作。本文主要探讨现行专利及著作权制度中规定的保护对象、权利人资格、专利及著作权的权属、侵权判定、侵权责任主体等对人工智能技术快速发展的适应及协调程度,研究指出:现有的专利和版权制度应当对人工智能的发明和作品持鼓励的态度,在排除不适宜作为专利或著作权保护对象的同时,人工智能的发明或作品的权利授予标准应当与人类的有所区分;相关权利人仍须对应自然人或法人,而非人工智能本身;相关专利侵权行为应包括间接侵权,同时应对人工智能作品安排“登记-授权”的著作权制度、参考临摹作品为人工智能绘画作品提供相应的授权使用制度等。本文还探讨了当前的专利法及著作权法在人工智能时代符合公平原则的程度,并提出解决方案:在“强人工智能时代”将人工智能的发明创造或作品作为公共财产,授予相应的开发者“数据处理权”作为一种新的邻接权,赋予人工智能创造物新的特别权利(Sui Generis),修改专利法与著作权法中关于主要权利的相关规定等。 相似文献
693.
694.
695.
Ben A. Petrazzini Girija Krishnaswamy 《The Information Society》1998,14(1):3-18
Telecommunications restructuring have evolved differently in Asia and Latin America. While Asian governments have moved cautiously in bringing changes to the sector, Latin American nations have implemented radical ownership and market transformations. The Indian telecommunications reform falls in between these two general regional trends. The choice of a high component of competition, increased private participation, and no privatization of the national carrier set conditions that will trigger unique socioeconomic effects. This article identifies and highlights the likely implications of the Indian reform on key economic and social issues, such as the cost of services, cross-subsidies, network interconnection, private investments, universal services, employment, and the possible rise of an information-intensive economy. It does so by comparing and contrasting the Indian experience with dominant reform strategies elsewhere in the developing world. 相似文献
696.
We investigated the intersectional nature of race/racism and gender/sexism in broad scale inequities in physics student learning using a critical quantitative intersectionality. To provide transparency and create a nuanced picture of learning, we problematized the measurement of equity by using two competing operationalizations of equity: Equity of Individuality and Equality of Learning. These two models led to conflicting conclusions. The analyses used hierarchical linear models to examine student's conceptual learning as measured by gains in scores on research-based assessments administered as pretests and posttests. The data came from the Learning About STEM Student Outcomes' (LASSO) national database and included data from 13,857 students in 187 first-semester college physics courses. Findings showed differences in student gains across gender and race. Large gender differences existed for White and Hispanic students but not for Asian, Black, and Pacific Islander students. The models predicted larger gains for students in collaborative learning than in lecture-based courses. The Equity of Individuality operationalization indicated that collaborative instruction improved equity because all groups learned more with collaborative learning. The Equality of Learning operationalization indicated that collaborative instruction did not improve equity because differences between groups were unaffected. We discuss the implications of these mixed findings and identify areas for future research using critical quantitative perspectives in education research. 相似文献
697.
从“5W”模式看科技传播 总被引:5,自引:0,他引:5
从“5W”模式探讨获取最佳科技传播效果的途径与方法,以期对我国的科普工作,甚至对充发发挥图书馆传递科学的作用有借鉴意义。 相似文献
698.
699.
700.
This study measured the speed, error rates, and subjective evaluation of arrow-jump keys, a jump-mouse, number keys, and a touch screen in an interactive encyclopedia. A summary of previous studies comparing selection devices and strategies is presented to provide the background for this study. We found the touch screen to be the fastest in time, the least accurate but the overall favorite of the participants. The results are discussed and improvements are suggested accordingly. 相似文献