Affordances of using Multiple Videoed Events to construct a rich understanding of adult–child book readings     

Maria Nicholas 《International Journal of Research & Method in Education》2018,41(2):125-141

This paper explores the affordances of using video-based research to capture a multiplicity of events, along with multimodal representations when producing data related to adult–child book readings. In doing this we answer two questions: (1) why more than one event is needed when seeking a comprehensive collection of information for the purpose of analysis; and (2) why one mode of data production alone (e.g. audio recordings or note taking) is insufficient to record practice or interviews when richness is of priority. This research used three videoed events to produce data. These included videoing: (1) caregiver–child interactions during four shared book reading sessions, (2) interviews with caregivers immediately following each of the reading sessions and (3) video-stimulated discussions with caregivers within two months of the final shared book reading. In this paper, I contribute to discussions that highlight the affordances of using video-based research as a means of capturing the multimodal elements of an experience, which can contribute to the analysis and interpretation of data. I expand on this, however, to suggest that when coupled with a multiplicity of events, video-based research can be a means of pursuing richness via a method that has been criticized for its narrow subjectivity.  相似文献   

Using video to promote early childhood teachers' thinking and reflection     

《Teaching and Teacher Education》2014

This article examines findings from a qualitative study employing group stimulated-recall interviews using video-recordings of early childhood teachers to elicit their thinking and reflections about their teaching interactions. It focuses on the value of video to enable teachers to reflect on their practices and the extent to which collectively viewing recorded episodes allows negotiated understandings of their own and other teachers' practices. Whilst these findings suggest that video and collective dialogue are useful professional learning tools for teachers to examine and improve their teaching, structural and relational challenges exist that may impact on how effectively such tools are used.  相似文献   

基于流媒体技术的网络视频资源库的构建     

王同明 《教育技术导刊》2008,(12):66-68

信息技术的飞速发展,使以多媒体通信技术为基础的流媒体技术得到了越来越广泛的应用。流媒体以其边播放边下栽的特性,成功地解决了多媒体信息网上传输的问题,使网络教学中的学习资源建设模式发生了重要变化。  相似文献   

高校思想政治理论课视频教学的问题与对策   总被引：2，自引：0，他引：2  

李红梅 《湖南科技学院学报》2008,29(5):129-131

视频教学以其独特的优势使高校思想政治理论课更为具体、生动,但是在运用教学的过程中,存在着一些亟待解决的问题,诸如过于追求创建生动的表象等等.为了扬长避短,取得优良的教学效果,高校思想政治理论课教师在运用视频进行教学过程中,应力求慎选、适度、互动.  相似文献   

A parallel memory architecture for video coding     

Jian-ying Peng  Xiao-lang Yan  De-xian Li  Li-zhong Chen 《浙江大学学报(A卷英文版)》2008,9(12):1644-1655

To efficiently exploit the performance of single instruction multiple data （SIMD） architectures for video coding, a parallel memory architecture with power-of-two memory modules is proposed. It employs two novel skewing schemes to provide conflict-free access to adjacent elements （8-bit and 16-bit data types） or with power-of-two intervals in both horizontal and vertical directions, which were not possible in previous parallel memory architectures. Area consumptions and delay estimations are given respectively with 4, 8 and 16 memory modules. Under a 0.18-pm CMOS technology, the synthesis results show that the proposed system can achieve 230 MHz clock frequency with 16 memory modules at the cost of 19k gates when read and write latencies are 3 and 2 clock cycles, respectively. We implement the proposed parallel memory architecture on a video signal processor （VSP）. The results show that VSP enhanced with the proposed architecture achieves 1.28× speedups for H.264 real-time decoding.  相似文献   

视频点播系统需求分析与测试方法探讨     

李晓丹  徐高翔 《科技广场》2005,(10):29-31

本文主要和大家探讨一下VOD视频点播系统的需求分析与系统测试的方法.这里介绍了在相同硬件条件下需要测试比较VOD系统的几个主要性能指标,并在产品的选购和对厂商的售后服务等方面提供一些建议.  相似文献   

基于H.323的可扩展多用途视频监控系统的设计与实现     

杨汉祥  罗有萍  杨润华 《赣南师范学院学报》2002,(6):36-38

提出了基于H.323的可扩展多用途视频监控系统的整体框架,分析了系统的各模块功能,给出了系统的各项指标,描述了系统的设计与实现方法.  相似文献   

Improved fast intra prediction algorithm of H.264/AVC   总被引：1，自引：0，他引：1  

LIU Qiong  HU Rui-min  ZHU Li  ZHANG Xin-chen  HAN Zhen 《浙江大学学报(A卷英文版)》2006,7(Z1)

  相似文献   

Technical features in the Portal to CADAL     

吴江琴庄越挺  潘云鹤 《浙江大学学报(A卷英文版)》2005,6(11):1249-1257

INTRODUCTION The objective of the China-America Digital Academic Library Project (CADAL) is to provide universal access to one million digital books and multimedia resources for teaching and research, and explore the ways of applying multimedia and virtual reality technologies to digital library. Terabyte volume of multimedia data of various types of modality, such as text, image, video, anima- tion, are available in the CADAL, which is one of the distinct characteristic of CADAL. …  相似文献   

提高多媒体教室音质与图像清晰度的探讨   总被引：1，自引：0，他引：1  

苏朝进 《现代教育技术》2002,12(3):59-63

多媒体教室的音质与图像清晰度,直接影响着教学信息的传递和教学的质量。如何获得理想的听音效果,既能保证语言的清晰度,又能保证音乐、效果声的保真度;如何最大限度地提高图像清晰度。文章从声学设计、音响系统设计与配接、视频系统的选型与配接等方面进行了探讨。  相似文献