在线教育视频用户评论行为比较研究——以Bilibili网站视频评论为例

[目的/意义] 视频评论是在线教育视频中用户交互的重要途径。分析在线视频不同评论方式中用户的行为差异对于理解用户行为规律,并促进视频平台评论功能的设计与优化具有重要意义。[方法/过程] 文章搜集Bilibili网站200个在线教育视频的弹幕与传统评论数据,结合定量统计分析和定性内容分析方法,从视频特征、用户特征和评论内容特征三方面比较用户弹幕与传统评论行为的异同。[结果/结论] 弹幕有利于提升用户的参与感,增长活跃周期,能更好地支持用户与视频内容的实时互动;传统评论可有效支持用户之间的直接互动,并帮助其开展深层次的知识交流。二者应充分结合,相互补充,提高用户在线学习的互动性和参与感。     

《协和医学杂志》新媒体开展知识类视频内容传播的实践与思考

【目的】 视频化时代下,通过《协和医学杂志》开展知识类视频内容传播的具体实践,总结医学期刊知识类视频内容传播的有效运营方法及现存问题,为期刊同仁提供思路及借鉴。【方法】 介绍《协和医学杂志》新媒体开展知识类视频内容传播的优势及效果,并从视频选题、内容制定、类型把控、视觉表现和传播渠道5个方面分享运营策略及典型案例。【结果】 《协和医学杂志》新媒体在知识类视频内容传播发展中通过锚定黄金栏目开展高起点系列选题策划,基于不同用户需求差异化制定视频内容,打破藩篱实施短中长视频全线发展,并创新探索MG动画与AI语音融合的视听表现,结合多平台分发、多渠道引流等综合运营措施,增强期刊内容传播力和品牌影响力,成效显著。【结论】 医学期刊应抓住视频发展机遇,以多维度综合运营开创知识类视频新干线,为医学期刊视频内容传播拓新局。同时在实践中应注意发布规律、编辑素养、资金投入及长效发展布局等问题,从而坚实期刊市场竞争力,提升中国学术期刊知识内容传播影响力。     

Discovering attractive segments in the user-generated video streams

With the rapid development of digital equipment and the continuous upgrading of online media, a growing number of people are willing to post videos on the web to share their daily lives (Jelodar, Paulius, & Sun, 2019). Generally, not all video segments are popular with audiences, some of which may be boring. If we can predict which segment in a newly generated video stream would be popular, the audiences can only enjoy this segment rather than watch the whole video to find the funny point. And if we can predict the emotions that the audiences would induce when they watch a video, this must be helpful for video analysis and for guiding the video-makers to improve their videos. In recent years, crowd-sourced time-sync video comments have emerged worldwide, supporting further research on temporal video labeling. In this paper, we propose a novel framework to achieve the following goal: Predicting which segment in a newly generated video stream (hasn’t been commented with the time-sync comments) will be popular among the audiences. At last, experimental results on real-world data demonstrate the effectiveness of the proposed framework and justify the idea of predicting the popularities of segments in a video exploiting crowd-sourced time-sync comments as a bridge to analyze videos.     

Triggering effects of mobile video marketing in nature tourism: Media richness perspective

The aim of this study was to investigate videos as potential triggers of behavior. Therefore, we applied the theories of triggers and media richness to learn about the triggering efficiency of mobile marketing videos on participants’ behavioral intentions. The experiment involved three distinct test groups, each comprising 41 student participants. From the perspective of media richness theory, we observed that the different kinds of videos had quite similar effects in terms of triggering behavioral changes. However, the mechanisms explaining why triggers were present differed for each video. Further, the results reveal that the consumer's position in the information search process was the most significant reason for the triggering of any kind of effect. In addition, the instructionally designed videos were able to exert an affective triggering effect: the more participants liked the video, the more it affected their participation intention and recall scores. This study extends the media richness research by demonstrating that the effects of media richness can vary within technically similar videos, as they form different logical connections among non-verbal visual cues related to a video's storyline.     

科技期刊视频号短视频运营实践——以《遥感学报》为例

【目的】 以《遥感学报》视频号短视频运营为具体案例,通过分享视频制作各环节的实践经验,提出短视频运营现存的问题和对策,以期为其他科技期刊的新媒体运营提供借鉴。【方法】 采用案例分析、文献调研和用户调研的方法,以《遥感学报》视频号发布的短视频为研究对象,从短视频的整体规划、主题内容、素材收集、剪辑制作、宣传推广、效果追踪等环节分享实践经验。【结果】 科技期刊利用短视频这种新的媒体形式,可有效提高期刊的影响力,但是在内容、人员和传播力度方面还存在不足,有待进一步优化调整。【结论】 短视频运营上,科技期刊可深度挖掘优质资源来丰富短视频的内容,多渠道打造专业团队以缓解人员不足的压力,通过媒体矩阵联动、频繁发布高质量作品、举办各种学术活动等方式,促进短视频平台和科技期刊内容的有效融合和传播。     

信息生态视角下政务短视频的内生逻辑与优化路径

[目的/意义]政务短视频的应运而生开启了政务服务与社会治理的新时代,在此背景下探讨政务短视频的内生逻辑,旨在推进我国政务短视频的健康持续发展。[方法/过程]基于信息生态理论视角,从理论、实践与技术三个方面对政务短视频发展的内生逻辑进行深入分析,并在此基础上提出政务短视频发展的优化路径。[结果/结论]当前政务短视频的发展存在着头重脚轻、定位模糊、追求形式和各自为战的问题,应从以下4个方面探索其优化路径,即强化顶层设计与明确整体规划,清晰自身定位与打造个性内容,整合政务账号与优化媒体生态,加强技术交流与发挥矩阵合力。     

基于网络视频的用户交互式持续学习行为影响因素研究

【目的/意义】基于网络视频的用户交互式持续学习行为对于推动网络视频学习资源价值最大化以及教育 信息化发展具有重要意义,对其影响因素及作用机理的探究有助于增加用户粘性并推动在线学习良好生态的构 建。【方法/过程】通过采集交互式学习视频的186038条弹幕数据,并以此为原始资料采用扎根理论的质性研究方法 对弹幕数据进行三级编码提取出概念和范畴,进而构建影响因素理论模型。【结果/结论】研究发现,个体因素、课程 因素和教师因素通过影响用户交互行为因素达到影响用户满足感,并进一步影响用户交互式持续学习行为;此外, 用户的个体特征会调节用户交互行为因素对用户满足感的影响,且教师的授课风格会直接影响用户交互式持续学 习行为。【创新/局限】本文采用扎根理论并以弹幕数据为原始资料构建了交互式持续学习行为影响因素模型,各影 响因素的定量分析有待后续验证,亦可通过对比分析其他类型网络视频学习资源拓展本文研究结论。     

Introduction to the Special Issue on Mobile Societies in Asia-Pacific

We engage with recent applications of the Marxist “labor theory of value” to online prosumer practices, and offer an alternative framework for theorizing value creation in such practices. We argue that the labor theory of value is difficult to apply to online prosumer practices for two reasons. One, value creation in such practices is poorly related to time. Two, the realization of the value accumulated by social media companies generally occurs in financial markets, rather than in direct commodity exchange. In an alternative framework, we offer an understanding of value creation as based primarily on the capacity to initiate and sustain webs of affective relations, and value realization as linked to a reputation based financial economy. We argue that this model describes the process of value creation and appropriation in the context of online prosumer platforms better than an approach based on the Marxist labor theory of value. We also suggest that our approach can cast new light on value creation within informational capitalism in general.     

短视频产业场景式服务及其价值创造路径研究

[目的/意义]探析"场景时代"背景下短视频产业场景式服务及其价值创造路径。[方法/过程]从场景理论视角,探析短视频产业场景式服务逻辑、过程与功能,提出实现短视频产业场景式服务的价值取向及创造路径,并基于多案例的研究方法对短视频产业的场景式服务及其价值创造路径予以实证。[结果/结论]短视频产业场景式服务作为未来"场景时代"信息服务的新业态,将成为信息服务转型发展的新实践。     

Real time video scene detection and classification

The VISION (video indexing for searching over networks) digital video library system has been developed in our laboratory as a testbed for evaluating automatic and comprehensive mechanisms for video archive creation and content-based search, filtering and retrieval of video over local and wide area networks. In order to provide access to video footage within seconds of broadcast, we have developed a new pipelined digital video processing architecture which is capable of digitizing, processing, indexing and compressing video in real time on an inexpensive general purpose computer. These videos were automatically partitioned into short scenes using video, audio and closed-caption information. The resulting scenes are indexed based on their captions and stored in a multimedia database. A client-server-based graphical user interface was developed to enable users to remotely search this archive and view selected video segments over networks of different bandwidths. Additionally, VISION classifies the incoming videos with respect to a taxonomy of categories and will selectively send users videos which match their individual profiles.     

Predicting positive user responses to social media advertising: The roles of emotional appeal,informativeness, and creativity

As social network services become more pervasive, social media advertising emerges as an attractive vehicle for augmenting advertising effectiveness. To leverage this new means of marketing, one must understand what engages SNS users in a favorable online behavior (i.e., overtly indicating personal interest in, or support for, the exposed message by clicking the Like or Share button in Facebook), thereby resulting in an effective advertising campaign. This research conceptualizes SNS ad effectiveness as a concept encompassing emotional appeal, informativeness and creativity that all have a potential to contribute to a positive online behavior. It empirically investigates the antecedents of positive user behavior for a SNS ad based on the theory of reasoned action, the social influence theory, and a persuasion theory. It proposes and tests a conceptual model of the formation of online user’s behavioral responses with regards to SNS advertising. The results of our empirical tests of the model reveal that informativeness and advertising creativity were key drivers of favorable behavioral responses to an SNS ad and that intention to engage in favorable user responses was positively associated with purchase intention. Based on these findings, the paper suggests further research directions and offers implications for harnessing the full potential of the new SNS advertising platform.     

ViSSa: Recognizing the appropriateness of videos on social media with on-demand crowdsourcing

The recent significant growth of social media has brought the attention of researchers toward monitoring the enormous amount of streaming data using real-time approaches. This data may appear in different forms like streaming text, images, audio, videos, etc. In this paper, we address the problem of deciding the appropriateness of streaming videos with the help of on-demand crowdsourcing. We propose a novel crowd-powered model ViSSa, which is an open crowdsourcing platform that helps to automatically detect appropriateness of the videos getting uploaded online through employing the viewers of existing videos. The proposed model presents a unique approach of not only identifying unsafe videos but also detecting the portion of inappropriateness (in terms of platform’s vulnerabilities). Our experiments with 47 crowd contributors demonstrate the effectiveness of the proposed approach. On the designed ViSSa platform, 18 safe videos are initially posted. After getting access, 20 new videos are added by different users. These videos are assessed (and marked as safe or unsafe) by users and finally with judgment analysis a consensus judgment is obtained. The approach detects the unsafe videos with high accuracy (95%) and point out the portion of inappropriateness. Interestingly, changing the mode of video segment allocation (homogeneous and heterogeneous) is found to have a significant impact on the viewers’ feedback. However, the proposed approach performs consistently well in different modes of viewing (with varying diversity of opinions), and with any arbitrary video size and type. The users are found to be motivated by their sense of responsibility. This paper also highlights the importance of identifying spammers through such models.     

面向视频弹幕的网络舆情事件监测研究

[研究目的]从视频弹幕的视角出发,挖掘网络舆情事件的话题漂移规律,提升网络舆情事件的视频情感检索精度。[研究方法]通过对视频弹幕进行主题与情感分析,提升网络舆情事件在线监测精准度,并在此基础上提出并构建弹幕迁移指数,建立一种基于弹幕迁移指数的情感监测方法,该方法首先基于BTM主题模型抽取视频弹幕的话题信息,并基于情感词典与颜文字词典计算不同时间窗口下的话题情感类别与情感强度,建立面向视频弹幕的网络舆情事件监测模型,再从话题内容的变化与视频兴趣热度两个角度构建话题迁移指数,并利用话题的情感强度变化,构建情感迁移指数。最终,基于话题迁移指数与情感迁移指数,得到加权后的弹幕迁移指数,实现网络舆情事件的在线监测。[研究结论]通过视频弹幕社区的真实数据,从逻辑层面验证了本模型的合理性,结果表明该方法能够较为准确地识别网络舆情事件迁移的关键时间窗口,为实现视频分享平台的情感可视化提供了切实可行的理论探索。     

网上技术市场是双边市场吗?——以浙江网上技术市场为例

从双边市场的判断基准出发,检验网上技术市场是否为双边市场。在对网上技术市场具有双边市场特征的必要条件进行分析的基础上,以中国浙江网上技术市场为例,通过搜集整理其2010年5月至2016年2月发布的技术难题数量和技术成果数量,建立格兰杰检验模型,实证检验网上技术市场满足双边市场存在的充分条件(即具有交叉网络外部性),从而得出网上技术市场是双边市场的结论。并通过建立回归方程,实现网上技术市场交叉网络外部性程度的测度,提出可在双边市场理论框架下进行研究的若干问题。     

抖音短视频对厦门城市旅游形象的建构研究

[目的/意义]为研究抖音短视频传播对厦门城市旅游形象的建构状况.[方法/过程]运用内容分析法与问卷调查法等研究方法,探讨短视频传播过程中厦门城市旅游形象建构的现状、评价、重要性.[结果/结论]抖音对于建构厦门城市旅游形象确实存在很大助力,但仍有提升空间;从加强多方联合与引导,推动优质内容创作,增强线上线下互动,增加地域...     

Privacy concerns and disclosure of biometric and behavioral data for travel

In light of mounting privacy concerns over the increasing collection and use of biometric and behavioral information for travel facilitation, this study examines travelers’ online privacy concerns (TOPC) and its impact on willingness to share data with travel providers. A proposed theoretical model explaining antecedents and outcomes of TOPC related to biometric and behavioral data sharing was tested using structural equation modeling with data collected from 685 travelers. The results extend the Antecedents – Privacy Concerns – Outcomes (APCO) framework by identifying a set of salient individual factors that shape TOPC. The findings provide empirical evidence confirming the context dependence of privacy preferences, showing that although travelers are concerned over their information privacy they are still willing to share their behavioral data; while in the case of biometric information, the disclosure decision is dependent upon expected benefits rather than privacy concerns. This study offers insights into privacy behavior of online consumers in the travel context and constitutes one of the few focusing on the social aspects of biometric authentication.     

Game mechanics and technological mediation: an ethical perspective on the effects of MMORPG’s

In the past decades, video games have grown from a niche market to one of the major entertainment media, enticing millions of players worldwide. When ethical aspects of video games are being debated, the discussion oftentimes revolves around effects of their content, such as violence. This paper argues that effects of game mechanics, such as reward mechanisms, should be considered as well, as these are at the core of the appeal of games. We analyze the ethical dimension of behavioral game design present in Massively Multiplayer Online Role Playing Games (MMORPG’s). Using the framework of technological mediation, we show how opaque and seductive game mechanics can invite problematic usage patterns, such as excessive use with negative effects on well-being, and how designers can take responsibility for morally acceptable impact of their games. Having a practical focus, the paper concludes with several proposals for better design.     

基于ActionScript3进行视觉编程探讨

利用ActionScript3脚本语言生成和控制各种图形、动画、视频等是Flash技术的一个重要应用。本论文从ActionScript3视觉显示架构和面向对象设计思想两个角度,阐述了利用 ActionScript3脚本语言进行Flash编程创作的技术。     

平台生态系统中互补者的多边关系研究：理论溯源与框架构建

有效关系管理是企业竞争优势的重要来源，随着平台生态系统在数字经济中的重要性日益增强，深刻理解平台生态系统中互补者所面临的多边关系越发显得重要。基于此，本文采用文献研究的方法，对平台生态系统中互补者多边关系的形成进行理论溯源。接着，基于价值创造、传递、获取的过程，对互补者所面临与平台所有者、其他互补者以及用户之间的多边关系以及关系管理进行梳理，并按照“前因—行为—结果—情境”的逻辑构建未来研究框架。本文从微观视角探讨互补者的多边关系，挖掘平台生态系统中互补者的交互环境，完善了平台生态系统问题的研究角度，为进一步探索平台生态系统中互补者的行为逻辑奠定了基础。