Investigating university students’ adoption of video lessons     

Zeynep Turan  H. Buluthan Cetintas 《Open Learning》2020,35(2):122-139

ABSTRACT

The purpose of this study was to examine the undergraduate students’ adoption of video lessons. The data were collected from 313 undergraduate students from Education, Health Sciences, and Letters Faculties within a large university in Turkey using a questionnaire with six constructs: ease of use, usefulness, enjoyment, intention, computer self-efficacy and relative advantage. The Technology Acceptance Model and Diffusion of Innovation Theory were used as the research framework for the study, and the data were analysed by Structural Equation Modeling. The results showed that ease of use and computer self-efficacy had a significant influence on usefulness of video lessons. Computer self-efficacy had a significant influence on ease of use regarding video lessons and usefulness of a video lesson had a significant influence on relative advantage. In addition, relative advantage and enjoyment had a significant effect on student intention to use a video lesson. Interestingly, it was found that perceived ease of use, perceived usefulness, and computer self-efficacy had no effect on the intention to use video lessons. Consequently, five constructs account for 38% of the variance intention to use video lessons. The research model was found to have a good fit.  相似文献   

视讯业务新热点--视频会议系统     

蔡明莉 《科技广场》2005,(2):75-77

视频会议系统集语音、数据、图像为一体，可帮助相隔千里之外的人们实现面对面的实时沟通，它分为软件视频会议系统和硬件视频会议系统。硬件视频会议系统价格昂贵，但稳定性强，视频质量可靠；软件视频会议系统价格低廉，实现方便，易于升级维护，是视频会议系统今后的发展方向。  相似文献   

Exploring student hand-raising across two school subjects using mixed methods: An investigation of an everyday classroom behavior from a motivational perspective     

《Learning and Instruction》2020

Student hand-raising is an everyday behavior in classroom interactions with teachers. This research presents two studies that examine the variance in hand-raising and its relation to student motivation in two school subjects, Mathematics and Language Arts. Student hand-raising is introduced as an indicator of behavioral engagement. Study 1 investigated N = 397 high school students in 20 classrooms during a videotaped lesson in each subject. Multilevel regression analysis suggests that student motivation accounts for significant variance in hand-raising. The results show subject-specific differences: Student self-concept predicts hand-raising in Mathematics, while students' situational interest predicts their hand-raising in Language Arts. Students’ externally regulated motivation is predictive across both subjects. In Study 2, N = 14 high school students were interviewed about their hand-raising behavior. The results validate and extend the findings from Study 1. Finally, this research emphasizes the importance of fostering student hand-raising and discusses the implications for future research.  相似文献   

基于互信息量的视频关键帧提取算法     

孔娟  田丽 《安阳工学院学报》2010,9(4):55-58

关键帧提取技术是基于内容检索和视频分析的基础。关键帧的使用减少了视频索引的数据量,同时也为视频摘要和检索提供了一个组织框架。首先介绍了目前关键帧提取技术,然后提出了一种基于互信息量的关键帧提取方法,该算法以帧间互信息量来衡量两帧图像内容的相似性,可以对具体镜头按其特点自动提取出一个或多个关键帧。实验结果表明这种方法可以较好地概括视频内容。  相似文献   

浅析视频技术的发展和应用   总被引：1，自引：0，他引：1  

周华先 《湖南科技学院学报》2005,26(5):138-140

当前视频技术发展迅速且应用广泛,然而视频格式的不统一、编码技术的多样性却给视频的创建和使用带来了诸多不便。本文就各类视频文件的特点、应用和转换方式进行了深入的分析和探讨。  相似文献   

一种基于混沌加密的视频水印方法     

范黎明  陈永强  王俊龙 《人天科学研究》2010,(12):163-165

利用二维混沌流加密技术加密有意义的二进制图像,获得水印数据,以提高视频水印的安全性。水印嵌入过程中,水印被嵌入到随机选择的视频帧的离散余弦变换系数里。在鲁棒性和帧平均攻击实验后,大部分水印可以通过水印检测提取算法进行提取和识别。实验结果表明,这种视频水印方法具有一定的安全性、隐蔽性和鲁棒性。  相似文献   

神经网络在视频检索中的应用     

赵毅  ;黄兰英  ;梅龙宝 《九江师专学报》2009,(6):11-14

随着计算机技术的发展,视频数据的容量以几何级数增长。如何在海量视频数据库中快速地检索到所需视频成为热门的研究课题。本文提出了一种基于反馈式神经网络的视频检索算法,对视频进行基于内容的分析和检索。实验表明用该方法检索的准确度比用基于关键帧的视频检索方法平均提高4%以上。  相似文献   

典型实验教学视频案例制作的教学设计——以“乙酰水杨酸的制备”为例   总被引：1，自引：0，他引：1  

左建军  刘世清  梁银英 《现代教育技术》2009,19(7):53-55,10

典型实验教学视频案例为提高高校实验教学效果,促进实验教学改革起到重要推动作用。针对实验教学视频案例的制作,文章从教学设计的视角,以个案研究的方法,对典型实验教学视频案例的概念特点以及如何应用教学设计做了详细介绍。  相似文献   

探析Hulu运营模式对卫视网站创新的借鉴     

吴江文 《国际新闻界》2009,(9)

网络视频是一个受年轻用户青睐的新媒体新兴业务,但多数网络视频因其由用户自传而出现版权诉讼、内容删除、质量差和内容品位不高等问题,使一些视频网站看上去很热闹,赢利却很困难。本文通过对新兴视频网站Hulu的模式进分析,认为Hulu模式符合视频网站未来的发展趋势,值得各类视频网站借鉴。  相似文献   

How to capture growth? – Video narratives as an instrument for assessment in teacher education     

Anne Bannink 《Teaching and Teacher Education》2009

Portfolios are widely used as instruments for assessment in initial teacher education courses. They are claimed to present a comprehensive picture of student teachers' knowledge and performance. But what type of evidence is needed to safely say that an aspiring teacher has not only grasped essential notions and concepts from the teacher education course, but is also able to implement them in real world classroom situations? This paper reports on the design process of one portfolio assignment that has been developed specifically to capture students' classroom performance and development in their portfolio. Data from the portfolio entries of one student from a small-scale pilot conducted with the assignment are analyzed in detail followed by a discussion of the implications of the case study.  相似文献