全文获取类型
收费全文 | 159篇 |
免费 | 4篇 |
国内免费 | 8篇 |
专业分类
教育 | 99篇 |
科学研究 | 22篇 |
各国文化 | 3篇 |
体育 | 10篇 |
综合类 | 7篇 |
信息传播 | 30篇 |
出版年
2023年 | 2篇 |
2022年 | 5篇 |
2021年 | 5篇 |
2020年 | 2篇 |
2019年 | 3篇 |
2018年 | 2篇 |
2017年 | 3篇 |
2016年 | 4篇 |
2015年 | 4篇 |
2014年 | 11篇 |
2013年 | 24篇 |
2012年 | 14篇 |
2011年 | 7篇 |
2010年 | 3篇 |
2009年 | 13篇 |
2008年 | 7篇 |
2007年 | 4篇 |
2006年 | 15篇 |
2005年 | 15篇 |
2004年 | 7篇 |
2003年 | 2篇 |
2002年 | 6篇 |
2001年 | 4篇 |
2000年 | 3篇 |
1999年 | 1篇 |
1998年 | 2篇 |
1997年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
排序方式: 共有171条查询结果,搜索用时 93 毫秒
21.
Mary McMullen James Elicker Jianhong Wang Zeynep Erdiller Sun-Mi Lee Chia-Hui Lin Ping-Yun Sun 《Early childhood research quarterly》2005,20(4):451-464
The purpose of this study was to examine what, if anything, caregivers and teachers of 3- to 5-year-old children from the U.S. (n = 412), China (n = 244), Taiwan (n = 222), Korea (n = 574), and Turkey (n = 214), had in common in terms of self-reported beliefs and self-reported practices related to the National Association for the Education of Young Children's (NAEYC) policy statement for developmentally appropriate practices (DAP). DAP is widely endorsed by early childhood education and care professionals in the U.S. and is assumed to have far reaching impact on curricular beliefs and practices throughout the world. Pearson correlations and one-way ANOVA were used to compare overall mean scores for beliefs measured by the Teachers Beliefs Scale (TBS) to those of practices measured by the Instructional Activities Scale (IAS) [Charlesworth, R., Hart, C. H., Burts, D. C., & Hernandez, S. (1991). Kindergarten teachers’ beliefs and practices. Early Child Development and Care, 70, 17–35]. Item-by-item analyses were conducted using factor analysis and χ2 analyses within and across countries. Similarities emerged related to, in particular, those beliefs and teaching practices associated with integrating across the curriculum, promoting social/emotional development, providing concrete/hands-on materials, and allowing play/choice in the curriculum. 相似文献
22.
JEYARAJ Arulsaravana CHENG Liang EL ZARKI Magda 《浙江大学学报(A卷英文版)》2006,7(10):1690-1694
INTRODUCTION Increase in wireless system capacity through 3G services and innovative low bit rate video coding techniques have made it possible to have mobile multimedia services on hand-held systems. High quality real-time multimedia services are slowly be- ing deployed on hand-held systems. However large scale deployment at low cost is still to be realized due to technological challenges such as stringent power control under severely fading environments and the susceptibility of high qu… 相似文献
23.
这篇文章首先介绍了快速路设计中几种常见的横断面型式,然后根据快速路两侧土地开发不对称的情况,结合政府对该地区的用地政策及开发计划,同时分析其两侧交通出行的特点,提出横断面优化设计方案。 相似文献
24.
陈建如 《河北北方学院学报(社会科学版)》1998,(Z2)
介绍了中学化学计算中常用的一种简化运算形成一“十字交叉法”,并通过例证加以说明,以澄清部分老师和学生不明其理只会引用的模糊概念,弄清其来龙去脉。 相似文献
25.
跨行政区域创新策源能力评价与实证——基于熵权法、TOPSIS法、灰色关联分析 总被引:1,自引:0,他引:1
跨行政区域创新策源能力的形成与发展是我国现阶段重要战略,包含创新策源的主体、条件、途径与内容多个要素.通过重新解读创新策源能力,从创新政策、创新投入、创新产出、开放发展4个方面选择36个三级指标,构建跨行政区域创新策源能力评价指标体系,运用我国八大经济区指标数据,采用熵权法、灰色关联分析法和TOPSIS法确定评价指标权重和关联度、确定八大区创新策源能力排序及其关联度.结果显示:创新投入、开放发展是区域创新策源能力的重要影响因素,尤其是科学新发现;八大区创新策源能力具有明显差异,华南、华东、华北、华中、西南五大经济区的创新策源水平高于东北、西北两大经济区,其中东部沿海综合经济区与长江中游综合经济区、南部沿海经济区的创新策源能力关联度最高. 相似文献
26.
《Information processing & management》2023,60(3):103280
Image and text matching bridges visual and textual modality differences and plays a considerable role in cross-modal retrieval. Much progress has been achieved through semantic representation and alignment. However, the distribution of multimedia data is severely unbalanced and contains many low-frequency occurrences, which are often ignored and cause performance degradation, i.e., the long-tail effect. In this work, we propose a novel rare-aware attention network (RAAN), which explores and exploits textual rare content for tackling the long-tail effect of image and text matching. Specifically, we first design a rare-aware mining module, which contains global prior information construction and rare fragment detector for modeling the characteristic of rare content. Then, the rare attention matching utilizes prior information as attention to guide the representation enhancement of rare content and introduces the rareness representation to strengthen the similarity calculation. Finally, we design prior information loss to optimize the model together with the triplet loss. We perform quantitative and qualitative experiments on two large-scale databases and achieve leading performance. In particular, we conduct 0-shot test for rare content and improve rSum by 21.0 and 41.5 on Flickr30K (155,000 image and text pairs) and MSCOCO (616,435 image and text pairs), demonstrating the effectiveness of the proposed method for the long-tail effect. 相似文献
27.
本文对当代中国翻译理论研究中的文化视角作了全面的阐述,介绍了在文化方面进行研究的著名翻译家和翻译理论家的主要观点,并对此进行了分析,得出文化问题是翻译研究中的重要研究对象,并起着举足轻重的作用的结论。 相似文献
28.
本文采用显性比较优势指数(RCA)、贸易竞争指数(TSC)、产业内贸易指数(IIT)、对两岸资讯电子产品的竞争力和产业内贸易的水平及其演变进行测度和分析.研究表明,两岸资讯电子产业各有优劣势,互补性强;两岸电子产品产业内贸易的发展在很大程度上是台商投资带动的结果;随着大陆台商的本地化趋势越来越明显,与台湾的产业贸易将被台商的投资所替代,两岸分工将日益趋向水平型.文章最后指出,随着两岸三通的全面实现及ECFA的签订,两岸的投资和贸易关系都将发生深刻变化,这些变化将有利于两岸产业内贸易的发展,有利于深化两岸电子产业分工. 相似文献
29.
30.