互联网存档中的视频采集研究--以国家图书馆为例     

杨云鹏 《新世纪图书馆》2021,(3):22-26

随着互联网的快速发展和网络带宽的逐年增加,网络上视频内容逐渐增多,更多的内容从纯文本网页发布变为文本加视频发布。但是,互联网存档很难采集到网络视频,这些视频通常使用非标准工具和协议。本文提供了该领域采集技术的概述。基于几年采集网络视频内容的经验,本文提供了HTTP协议和RTMP协议视频采集的示例,阐述了采集网络视频内容的问题和解决方案。本文还提出了一种外部下载器作为视频采集模块,用于扩展网络视频内容采集。  相似文献   

观看国内外网络视频公开课的启示     

李捷  张蒙  毕琳琳 《高教论坛》2014,(9)

近年来,一种新的教育传媒网络视频公开课越来越受到高校师生、白领的追捧。它是当下高等教育研究的热点,也是未来教育发展的大趋势。世界知名高校网络视频公开课的教育理念和教育模式已经逐步向我国渗透,极大地促进了我国视频公开课的建设和发展。笔者通过研究大量视频公开课,对中外网络视频公开课就课堂教学设计、师生行为分析、教学信息手段、视频录制制作等方面进行比较分析,以期对我国网络视频公开课建设有所启示和借鉴。  相似文献   

大学生微视频学习行为影响因素研究:UTAUT视角     

谭敬德  张思 《怀化学院学报》2014,(9)

伴随移动学习、碎片化学习、翻转课堂等概念的普及和发展,微视频学习成为学生学习的重要手段。为研究大学生微视频学习的行为规律,以技术接受和使用统一理论(UTAUT)为研究视角,对大学生微视频学习行为的影响因素进行研究。利用社会科学统计软件和结构方程模型对收集到的问卷进行数据分析。研究结果表明:绩效期望、努力期望和社会影响对大学生微视频学习行为具有积极正向的影响;行为意向对使用行为具有积极正向的影响;便利条件对使用行为的影响不显著;性别、年级、网络学习经验对研究模型中潜在变量之间的关系具有调节作用。  相似文献   

xMOOCs中的教学视频设计要点：基于案例的视频分析研究     

李秋菊  王志军  陈丽 《远程教育杂志》2014,(6)

大规模开放网络课程（MOOCs）的发展得到了国际社会的广泛关注。在主流的两类MOOCs（cMOOCs与xMOOCs）中,xMOOCs是目前发展速度最快,受众面最广的一类。而教学视频是xMOOCs最核心的课程资源。 xMOOCs中的教学视频设计应该把握哪些要点？为解决这一问题,特意分析了国内外四个主流课程平台的20门xMOOCs课程中的视频,参考《网络课程评价规范》形成视频分析框架,结合网络课程设计理论从界面设计、课程内容、教学设计三个方面对xMOOCs视频进行分析。根据视频分析结果,总结了xMOOCs教学视频在易识别性、课程说明、内容分块、学习目标、教学策略、学习者控制、内容交互性、信息呈现、练习与反馈九个方面的设计要点,并辅之以案例说明。希望对未来xMOOCs教学视频的设计有一定的参考与借鉴作用。  相似文献   

Children’s recall and motivation for an environmental education video with supporting pedagogical materials     

Fátima Viteri  Geraldine Clarebout  Marion Crauwels 《Environmental Education Research》2014,20(2):228-247

This study examined recall (Rcl) differences of high, average and low achieving fifth-grade elementary students (72) for an environmental education video with supporting pedagogical materials. In addition, it assessed the motivational level of all students. Recall assessment was carried out one-week and twenty-weeks after intervention. Main findings suggest comparative Rcl results for all achievers and high motivation for the designed video and pedagogical materials. Implications for future research and for an integrative materials’ design approach are presented.  相似文献   

一种安全的文化遗产数字视频云平台研究与实现     

余孝忠  李浪  杜国权 《衡阳师范学院学报》2014,35(6):163-166

该文研究了文化遗产数字视频云平台的安全问题,研究并实现了相应的流媒体影像网站,探索云平台上文化遗产数字视频的安全问题,在此基础上,提出了一种视频加密算法VEA,VEA密码算法用来保证云平台上文化遗产数字视频文件的安全。依托校园网环境,向校内用户提供自由视频点播服务,对古村古镇文化遗产数字视频文件较好的实现了组织、利用和管理。  相似文献   

录像反馈在排球普修教学中的应用与研究     

周静  刘振忠 《教育教学论坛》2014,(7):37-38

本文通过在排球教学中引入控制论中的反馈原理,利用摄录系统将学生的动作进行录像,然后进行观看分析,针对动作状态提出改进方案,再次练习、录像,再次分析,循环往复。结果证明,运用录像反馈分析与评价检验学生的动作技术,有利于加速学生的动作技术的掌握和提高,同时也激发了学生的学习兴趣,活跃了课堂气氛,全面地提高了教学效果。  相似文献   

A retrospective look at replacing face‐to‐face embryology instruction with online lectures in a human anatomy course          下载免费PDF全文

Elmus G. Beale  Patrick M. Tarwater  Vaughan H. Lee 《Anatomical sciences education》2014,7(3):234-241

Embryology is integrated into the Clinically Oriented Anatomy course at the Texas Tech University Health Sciences Center School of Medicine. Before 2008, the same instructor presented embryology in 13 face‐to‐face lectures distributed by organ systems throughout the course. For the 2008 and 2009 offerings of the course, a hybrid embryology instruction model with four face‐to‐face classes that supplemented online recorded lectures was used. One instructor delivered the lectures face‐to‐face in 2007 and by online videos in 2008–2009, while a second instructor provided the supplemental face‐to‐face classes in 2008–2009. The same embryology learning objectives and selected examination questions were used for each of the three years. This allowed direct comparison of learning outcomes, as measured by examination performance, for students receiving only face‐to‐face embryology instruction versus the hybrid approach. Comparison of the face‐to‐face lectures to the hybrid approach showed no difference in overall class performance on embryology questions that were used all three years. Moreover, there was no differential effect of the delivery method on the examination scores for bottom quartile students. Students completed an end‐of‐course survey to assess their opinions. They rated the two forms of delivery similarly on a six‐point Likert scale and reported that face‐to‐face lectures have the advantage of allowing them to interact with the instructor, whereas online lectures could be paused, replayed, and viewed at any time. These experiences suggest the need for well‐designed prospective studies to determine whether online lectures can be used to enhance the efficacy of embryology instruction. Anat Sci Educ 7: 234–241. © 2013 American Association of Anatomists.  相似文献   

Developing an audiovisual notebook as a self‐learning tool in histology: Perceptions of teachers and students          下载免费PDF全文

Antonio Campos‐Sánchez  Juan‐Antonio López‐Núñez  Giuseppe Scionti  Ingrid Garzón  Miguel González‐Andrades  Miguel Alaminos  Tomás Sola 《Anatomical sciences education》2014,7(3):209-218

Videos can be used as didactic tools for self‐learning under several circumstances, including those cases in which students are responsible for the development of this resource as an audiovisual notebook. We compared students' and teachers' perceptions regarding the main features that an audiovisual notebook should include. Four questionnaires with items about information, images, text and music, and filmmaking were used to investigate students' (n = 115) and teachers' perceptions (n = 28) regarding the development of a video focused on a histological technique. The results show that both students and teachers significantly prioritize informative components, images and filmmaking more than text and music. The scores were significantly higher for teachers than for students for all four components analyzed. The highest scores were given to items related to practical and medically oriented elements, and the lowest values were given to theoretical and complementary elements. For most items, there were no differences between genders. A strong positive correlation was found between the scores given to each item by teachers and students. These results show that both students' and teachers' perceptions tend to coincide for most items, and suggest that audiovisual notebooks developed by students would emphasize the same items as those perceived by teachers to be the most relevant. Further, these findings suggest that the use of video as an audiovisual learning notebook would not only preserve the curricular objectives but would also offer the advantages of self‐learning processes. Anat Sci Educ 7: 209–218. © 2013 American Association of Anatomists.  相似文献   

计算机机房视频监控系统建设     

任钊 《淮北职业技术学院学报》2014,(4):122-123

计算机机房承担着教学和试验等功能。随着信息技术和视频设备的发展,计算机机房的管理也应该从单一的点式管理发展到网络化、信息化的集约管理上来。我们应当建立由视频终端、传输、控制、显示、记录登记5大部分组成的计算机机房视频实时监控系统,以有效提高机房管理的质量和效率。  相似文献