全文获取类型
收费全文 | 3105篇 |
免费 | 17篇 |
国内免费 | 5篇 |
专业分类
教育 | 2450篇 |
科学研究 | 285篇 |
体育 | 141篇 |
综合类 | 144篇 |
文化理论 | 1篇 |
信息传播 | 106篇 |
出版年
2023年 | 1篇 |
2022年 | 2篇 |
2021年 | 12篇 |
2020年 | 32篇 |
2019年 | 30篇 |
2018年 | 8篇 |
2017年 | 6篇 |
2016年 | 18篇 |
2015年 | 49篇 |
2014年 | 141篇 |
2013年 | 212篇 |
2012年 | 267篇 |
2011年 | 298篇 |
2010年 | 194篇 |
2009年 | 131篇 |
2008年 | 177篇 |
2007年 | 251篇 |
2006年 | 264篇 |
2005年 | 236篇 |
2004年 | 248篇 |
2003年 | 189篇 |
2002年 | 136篇 |
2001年 | 110篇 |
2000年 | 51篇 |
1999年 | 28篇 |
1998年 | 10篇 |
1997年 | 15篇 |
1996年 | 8篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1992年 | 1篇 |
排序方式: 共有3127条查询结果,搜索用时 164 毫秒
1.
刘露 《体育科技文献通报》2020,(6):90-91
多媒体技术对于教学上的应用,为公共体育教学带来了新的改革。在教学过程中,如何更好的利用多媒体技术教学的优势与公共体育教学相结合,提升高校公体课的成绩,是本文研究的重点。文章通过对于两个班级进行试验研究,以期对多媒体技术在高校公共体育教学上的应用,提供一定的理论参考依据。 相似文献
2.
Internet of things (IoT) coupled with mobile cloud computing has made a paradigm shift in the service sector. IoT-assisted mobile cloud based e-healthcare services are making giant strides and are likely to change the conventional ways of healthcare service delivery. Though numerous approaches for preventing unauthorized access to information exchanged between a mobile phone and cloud platform do exist, but there is no security mechanism to prevent unauthorized access by the cloud administrators. With an aim to ensure security of client data such as Electronic Patient Records (EPR), we propose a novel high-capacity and reversible data hiding approach for securely embedding EPR within the medical images using Optimal Pixel Repetition (OPR). OPR converts every pixel of the input image to a 2 × 2 block to facilitate reversibility by ensuring all the pixels in a 2 × 2 block to have different values. Since a 2 × 2 block is comprised of 4-pixel elements, which could be arranged in sixteen possible ways; we generate a lookup table corresponding to sixteen possible positions of pixels. EPR hiding in each block is achieved by permuting the pixels of a block according to the four-bit word of secret data, resulting in a histogram invariant stego image. The histogram invariance improves the robustness of the proposed scheme to statistical attacks. A stego image is said to hide embedded data securely, when it provides better imperceptivity for an appreciably high payload. Thus, while using information embedding approach for securing client data on a mobile-cloud platform, high imperceptivity is a desirable feature. Experimental results show that average PSNR obtained is 42 dB for payload 1.25 bpp by our scheme, showing its effectiveness for preventing unauthorized access to client’s sensitive data. 相似文献
3.
The article documents findings from a pilot study undertaken in 2012–2013 in a special needs secondary school in the England, that trialled the use of a multimedia advocacy tool, “The RIX Wiki”. The trial was part of the pathfinder programme, which aimed to reform existing Special Education Needs provision, from the system of statementing to one of developing education health care plans. The reforms became enshrined in the Children and Families Act (2014). The findings were overall positive and helped with person-centred planning processes. The discussion is framed within current and future policy directives. We argue that multimedia advocacy approaches and software tools, like the “RIX Wiki” will have a continued role to play in ensuring the needs, aspirations and choices of children and young people with learning disabilities remain central. 相似文献
4.
基于因特网的多媒体远程教学初探 总被引:1,自引:0,他引:1
The paper analyzes the characteristics of a multimedia teleteaching system based on the Internet. It points out how to construct this system, and compares the technologies of connecting it with web databases. 相似文献
5.
6.
Marian Tuedor Fabia Franco Anthony White Serengul Smith Ray Adams 《International Journal of Disability, Development & Education》2019,66(1):19-35
Multimedia computer programmes have been found to facilitate learning in children with Autistic Spectrum Disorders (ASD). However, the effectiveness of these resources is limited due to poor design or a lack of consideration of the ASD cognitive profile, particularly at the lower functioning end of the spectrum. This article attempts to tackle the problem of the lack of design guidelines, with the aim of facilitating the development of effective educational programmes for children with severe ASD. The case study reported here evaluated two literacy educational computer programmes, by observing five low-functioning children with ASD, compared to five neurotypical children (control cases). The two types of reading-support software contrasted in the study presented different characteristics. The children’s data analysed here concern observations of child–software interactive sessions based on video recordings and coded for attention deployment to each programme, including motivation and engagement indicators. 相似文献
7.
罗广军 《咸阳师范学院学报》2004,19(2):73-74
多媒体教学过程是多媒体技术应用与教学设计的统一体.教学设计的思想尤为重要。多媒体教学过程的教学设计要从确定教学目标、设计多媒体课件、设计教学结构模式、设计教学效果测评方案等几个方面来进行。 相似文献
8.
多媒体技术在大学英语课堂教学中的应用 总被引:3,自引:0,他引:3
李宁林 《广西大学梧州分校学报》2005,15(3):68-70
多媒体英语教学具有传统教学不可比拟的许多优势,它对英语教师提出了一系列新的要求.在运用多媒体进行英语教学时切忌简单化. 相似文献
9.
多媒体课件制作技巧探讨 总被引:1,自引:0,他引:1
多媒体课件是以现代教育理论和学习理论为理论基础,利用视频、音频、文字、图片、动画等多种媒体,通过计算机技术对教学资源进行设计、开发而成的软件.针对目前课件制作中存在的问题和不足,介绍了如何把文字、图片、声音、视频、动画等多媒体融入到PowerPoint课件中的一些处理技巧. 相似文献
10.
离散数学多媒体教学的实践与认识 总被引:2,自引:0,他引:2
离散数学是我们学校立项的优秀课程,是一门覆盖多个专业的基础课程。本文主要讨论了离散数学课程实行多媒体教学的一些实践与认识。 相似文献