Optimization of Interactive Videos Empowered the Experience of Learning Management System

The Learning management system(LMS)is now being used for uploading educational content in both distance and blended setups.LMS platform has two types of users:the educators who upload the content,and the students who have to access the content.The students,usually rely on text notes or books and video tutorials while their exams are conducted with formal methods.Formal assessments and examination criteria are ineffective with restricted learning space which makes the student tend only to read the educational contents and videos instead of interactive mode.The aim is to design an interactive LMS and examination video-based interface to cater the issues of educators and students.It is designed according to Human-computer interaction(HCI)principles to make the interactive User interface(UI)through User experience(UX).The interactive lectures in the form of annotated videos increase user engagement and improve the self-study context of users involved in LMS.The interface design defines how the design will interact with users and how the interface exchanges information.The findings show that interactive videos for LMS allow the users to have a more personalized learning experience by engaging in the educational content.The result shows a highly personalized learning experience due to the interactive video and quiz within the video.

Video,Internet and Metaverse:The Media Transitions of Interaction in Theatre

The integration of theatre art with media such as video,the Internet and metaverse embodies intermediality and shows interactivity characteristics.Video is the first to open the possibility of interaction between performers and stage space in the theatre,thus greatly expanding the relationship between people and video in the links of environment,atmosphere,narrative,action and conflict,making stage performance more flexible and changeable.The rapid rise of computer technology represented by the Internet provides two interactive modes of node structure and natural language for digital theatre performance,opening the path for the audience to participate in theatre interaction.The metaverse media environment represented by video games and virtual reality has dramatically changed the freedom of audience participation in theatre.“Digital embodiment”enables the audience to immerse themselves in virtual theatre performance and become a part of theatre composition,thus bringing unprecedented performance experience.

Interactive System for Video Summarization Based on Multimodal Fusion

Biography videos based on life performances of prominent figures in history aim to describe great mens' life.In this paper,a novel interactive video summarization for biography video based on multimodal fusion is proposed,which is a novel approach of visualizing the specific features for biography video and interacting with video content by taking advantage of the ability of multimodality.In general,a story of movie progresses by dialogues of characters and the subtitles are produced with the basis on the dialogues which contains all the information related to the movie.In this paper,JGibbsLDA is applied to extract key words from subtitles because the biography video consists of different aspects to depict the characters' whole life.In terms of fusing keywords and key-frames,affinity propagation is adopted to calculate the similarity between each key-frame cluster and keywords.Through the method mentioned above,a video summarization is presented based on multimodal fusion which describes video content more completely.In order to reduce the time spent on searching the interest video content and get the relationship between main characters,a kind of map is adopted to visualize video content and interact with video summarization.An experiment is conducted to evaluate video summarization and the results demonstrate that this system can formally facilitate the exploration of video content while improving interaction and finding events of interest efficiently.

Web-based interactive visualization of 3D video mosaics using X3D standard

We present a method of 3D image mosaicing for real 3D representation of roadside buildings, and implement a Web-based interactive visualization environment for the 3D video mosaics created by 3D image mosaicing. The 3D image mo- saicing technique developed in our previous work is a very powerful method for creating textured 3D-GIS data without excessive data processing like the laser or stereo system. For the Web-based open access to the 3D video mosaics, we build an interactive visualization environment using X3D, the emerging standard of Web 3D. We conduct the data preprocessing for 3D video mosaics and the X3D modeling for textured 3D data. The data preprocessing includes the conversion of each frame of 3D video mosaics into concatenated image files that can be hyperlinked on the Web. The X3D modeling handles the representation of concatenated images using necessary X3D nodes. By employing X3D as the data format for 3D image mosaics, the real 3D representation of roadside buildings is extended to the Web and mobile service systems.

Modelling vehicular interactions for heterogeneous traffic flow using cellular automata with position preference

This paper proposes and validates a modified cellular automata model for determining interaction rate （i.e. number of car-following/overtaking instances） using traffic flow data measured in the field. The proposed model considers lateral position preference by each vehicle type and introduces a position preference parameter fl in the model which facilitates gradual drifting towards preferred position on road, even if the gap in front is sufficient. Additionally, the model also improves upon the conven- tional model by calculating safe front and back gap dynamically based on speed and deceleration properties of leader and follower vehicles. Sensitivity analysis was carried out to determine the effect of β on vehicular interac- tions and the model was calibrated and validated using interaction rates observed in the field. Paired tests were conducted to determine the determining interaction rates validity of the model in Results of the simulations show that there is a parabolic relationship between area occupancy and interaction rate of different vehicle types. The model performed satisfactorily as the simulated interaction rate between different vehicle types were found to be statistically similar to those observed in field. Also, as expected, the interaction rate between light motor vehicles （LMVs） and heavy motor vehicles （HMVs） were found to be higher than that between LMVs and three wheelers because LMVs and HMVs share the same lane. This could not be done using conventional CA models as lateral movement rules were dictated by only speeds and gaps. So, in conventional models, the vehicles would end up in positions which are not realistic. The position preference parameter introduced in this model motivates vehicles to stay in their preferred positions. This study demonstrates the use of interaction rate as a measure to validate micro- scopic traffic flow models.

Interactive free-viewpoint video generation

Background Free-viewpoint video(FVV)is processed video content in which viewers can freely select the viewing position and angle.FVV delivers an improved visual experience and can also help synthesize special effects and virtual reality content.In this paper,a complete FVV system is proposed to interactively control the viewpoints of video relay programs through multimedia terminals such as computers and tablets.Methods The hardware of the FVV generation system is a set of synchronously controlled cameras,and the software generates videos in novel viewpoints from the captured video using view interpolation.The interactive interface is designed to visualize the generated video in novel viewpoints and enable the viewpoint to be changed interactively.Results Experiments show that our system can synthesize plausible videos in intermediate viewpoints with a view range of up to 180°.

视频中的交互设计可以促进学习吗?——基于53项实验与准实验的元分析

交互设计可以增加学习者与学习内容的互动性,从而促进其主动学习,因而在教育领域的重要性日益凸显。然而,交互设计在教学视频中的作用尚存在一定争议。因此,研究纳入53项国内外实证研究进行元分析,系统地分析了交互设计对视频学习的影响。主效应检验结果发现,视频中的交互设计对总注视时间、学习参与度、学习动机、学习满意度、保持成绩、迁移成绩和延迟测试成绩有显著的促进作用,但对认知负荷的影响不显著。研究进一步从交互功能特征、学习者特征、学习材料特征、学习情境特征四个维度进行调节效应分析,结果发现,交互设计的作用受到多种因素影响,如交互类型、先验知识、学科领域、学习步调等。因此,在设计和实施教学视频时,应全面考虑交互设计的本身特性、学习者的个体差异等多方面因素,以更有效地发挥交互设计在教育中的优势。

3D及VR视频互动教学法在临床操作技能训练教学中的应用

选取2022年9月—2023年2月进入三峡大学附属仁和医院进行临床操作技能学习的64名学生,随机分为实验组和对照组。实验组在正常教学的基础上再进行3D及VR视频互动学习,对照组采用传统的教学模式。结果表明,实验组的理论知识和实践操作技能成绩、运用综合知识能力成绩及教学满意度高于对照组(P<0.05)。为此,3D及VR视频互动教学法应用于临床操作技能训练教学能取得良好的教学效果,可提升学生对知识的掌握及应用能力及对教学模式的满意度。

从媒介触达到情感认同:互动仪式链视角下妇联政务短视频的传播互动机制

基于互动仪式链理论来观照妇联政务短视频,研究发现各级妇联有效发挥了互动仪式链视频触达、行为触发和情绪触动的传播机制,在短视频平台上营造了一种虚拟在场的高度团结的群体组织。通过设定明确的参与边界、关注性别有关热点议题等方式,强化了群体内部的情感联结,起到了组织动员广大妇女群众的积极作用。此外,妇联政务短视频号建立了政府与基层妇女群众之间的崭新的沟通模式,有效地提升了妇联组织的媒介形象,增强了政府的公信力,促进了良好网络舆论环境的形成。

基于B站互动短视频的图书馆线上阅读推广服务模式研究

互动短视频已成为图书馆新媒体运营的潮流和趋势。文章在阐述B站互动短视频阅读推广传播价值和基于B站互动短视频的图书馆线上阅读推广基本要素的基础上,从引流、内容和交互三方面构建基于B站互动短视频的图书馆线上阅读推广服务模式,并提出制作技巧+先进技术、团队建设+规范运营、整合传播+品牌形象三大优化路径。

临床医学八年制神经病学理论课程线上教学效果分析

选择北京协和医学院八年制临床医学生为研究对象。线上教学的实施包括基于录播视频自学和线上互动答疑。综合分析学生的考核成绩差异,评价神经病学理论课程线上教学的效果。

智能技术支持的多模态互动教学评价框架设计与应用效果

评价和反馈互动教学质量,既是开展教学诊断、促进教师发展的重要方式,也是落实发展性评价理念的有益实践。然而,传统的互动教学评价往往忽视了教学过程中的多模态信息,存在分析不全面、不准确且耗时费力的问题。基于此,文章设计了智能技术支持的多模态互动教学评价框架,分为指标层、数据层、技术层、结果层和应用层,并从互动范围、互动参与度、互动亲密度、互动公平性、互动深度五个维度评价互动教学的质量。为了检验此评价框架的应用效果,文章以10个教学录像为样本,进行了多模态互动教学评价结果和专家模糊评价结果的相关性分析,验证了智能技术支持的多模态互动教学评价框架能够有效反映互动教学的质量。文章的研究为互动教学评价提供了一种更加全面、准确且高效的工具,并为推动教学诊断和教师专业发展、落实发展性评价理念提供了有力支持。

Reaction视频中用户弹幕信息交互行为的情感反应生成机理研究

深入挖掘Reaction视频中弹幕信息交互行为的情感反应机理有助于理解用户弹幕创作背后的情感生成原因及情感变化过程。本文基于情感反应模型,利用定向内容分析法对哔哩哔哩网站中11个热门视频的弹幕信息资源、视频内容以及reactor反应情况展开编码研究,构建了Reaction视频中用户弹幕信息交互行为的情感反应生成机理模型。研究发现,Reaction视频弹幕信息交互行为中的情感反应生成机理总体上遵循“信息刺激-情感反应”的路径,信息刺激有时会独立唤醒情绪或特定情感态度,有时也会通过唤醒特定情感态度进而影响情绪或内化情感态度的生成。该模型有助于提升情感反应理论在计算机协助交流中的情境化探索,也将为社交媒体中用户与信息交互提供优化建议。

互动叙事的两面性——电子游戏叙事中的作者复归

电子游戏行业迅速发展,成为继印刷文字、电影、电视等之后的又一重要叙事媒介。随着媒介平台的更新发展,经典叙事学理论面对新型文本,亟待进行理论范式的更新。以电子游戏叙事中的作者为主题,运用叙事伦理方法论述游戏叙事中作者与玩家两个主体在叙事中的作用,可做如下探讨:首先探讨叙事学范式的发展以及将游戏纳入叙事研究的必要性;进而具体分析游戏作品中体现出的“作者已死”的假象,此时的作者作为虚构世界的创作者,在游戏中隐藏于算法背后而非“已死”;最后阐明作者在隐身的同时对玩家及作品具有控制力,作者通过给予玩家被控制的自由,在游戏叙事中去而复归。

互动仪式链理论视角下短视频弹幕互动研究——以Bilibili情侣类视频为例

移动视频社交时代,各类短视频平台涌现了大批极具影响力的“微名人”,新型互动文化随之产生。为了挖掘其特征属性,聚焦情侣视频博主及CP文化,以B站为例,基于互动仪式链理论视角,探讨情侣博主的内容特征及其与用户之间的互动模式。通过参与式观察和内容分析法进行研究后发现:情侣博主的视频以情境互动类为主,视频主题倾向于搞怪、整蛊,视频基调突出较强的情绪特征。在此基础上,通过文本分析法挖掘弹幕类型、关键词等,并最终建立短视频平台情侣博主与用户之间的互动仪式链模型。基于综合研究方法,勾勒出短视频情侣博主与用户之间从启动到结果的完整互动仪式图景,揭示了互动仪式要素从“身体共同在场”到虚拟共同在场的转变,突出了虚拟场景和情感能量在移动视频社交时代的重要意义。

基于视频互动的远程康复指导在脑梗死后偏瘫患者中的应用

目的探讨基于视频互动的远程康复指导在脑梗死后偏瘫患者中的应用效果。方法选取2021年6月—2023年2月中国人民解放军联勤保障部队天津康复疗养中心收治的80例脑梗死后偏瘫患者为对象,根据随机数字表法分为对照组和观察组。对照组的40例患者进行常规康复指导,观察组的40例患者则进行基于视频互动的远程康复指导。比较2组干预前后的自我效能感[一般自我效能感量表(general self-efficacy scale,GSES)]、康复效果[平衡能力Berg平衡量表(Berg balance scale,BBS)及肢体运动功能Fugl-Meyer运动功能评分(Fugl-Meyer assessment scale,FMA)]、患者及家属对康复指导模式的满意度。结果干预前,2组的GSES、BBS及FMA评分比较,差异无统计学意义(P>0.05);干预3个月后,观察组的GSES量表及BBS量表构成优于对照组,FMA评分高于对照组,2组FMA评分高于干预前,差异有统计学意义(P<0.05);干预3个月后,观察组患者及家属对康复指导模式的总满意度分别为100%、100%,高于对照组的82.50%、87.50%(P<0.05)。结论基于视频互动的远程康复指导可显著改善脑梗死后偏瘫患者的自我效能感及康复效果,更受患者及家属的认可。

弹幕视频的实时互动性与会话机制研究

弹幕视频是以弹幕为在线评论手段的视频形式,具有“实时互动性”。该互动形式具有多模态、多线程特点,包含“人机”和“人际”两个互动空间,两个空间依靠会话角色转换进行连接。不同于线下会话,该互动过程以“我”的观看时间为参照建构共时心理时间系统,话语序列以并列式和序列式为主,且具有动态性。这种新的互动形式既是新媒体时代交际的必然需要,又是媒介对交际互动进行塑造和制约的结果。

模糊、缺席、不可见:影响数字化机器人智能服务的三个关键原因

机器人服务是数字化智能服务转型的一个重要体现。以往的研究理论化和技术化地分析了自动化机器人技术在提高服务效率、提升顾客体验方面的积极影响,但很少有研究者从顾客的实际使用视角去检验这一假设,更鲜有研究者在全自动化机器人服务的环境中检验智能化人机互动的实际效果和可能存在的问题。为此,本文选择视频录制与分析的研究视角,并结合民族志的研究方法,在两家数字化无人智慧酒店中记录了495次顾客与自动化智能服务系统互动的实践,旨在从实证的互动角度发现全自动化智能机器服务场景下存在的问题,揭示智能机器系统对服务活动产生负面影响的三个因素:互动指令的模糊性、服务协助人员的缺席、机器人交互技术的“不可见性”。为了提高数字化机器人智能服务效率,未来应考虑开发用户友好型服务交互系统。

短视频平台用户交互行为的差异性

研究不同短视频平台用户交互行为的差异,对平台导向和用户选择有着重要价值。文章基于趣味区隔理论对不同短视频平台在信息传播过程中各维度的差异性进行研究,以抖音、快手、b站3个平台“徐州八孩母亲”事件相关视频为例,对拉斯韦尔5W传播模式中传播者、内容、接收者、反馈效果4个维度的差异性进行假设检验,结合主题模型挖掘标题文本与评论文本的主题倾向,并借助布尔迪厄趣味区隔理论对差异性进行阐释与分析。研究发现:不同短视频平台的差异性源于用户间形成的趣味区隔,用户在短视频传播的交互中不断强化其价值观边界,同时平台逐渐形成趣味共同体;短视频平台用户交互行为差异反映出不同的阶层需求和价值观差异,而平台又通过自身调性构建来迎合和强化其特性。