简论病毒式网络视频广告的发展

病毒式网络视频广告是一种新兴的网络广告形式,它以相对低廉的广告制作费用在互联网上将产品或服务的信息以创意化的手段展现给受众,并刺激他们主动、迅速、有效地将广告内容传播给更多的人,从而产生极大的影响力。病毒式网络视频广告从早期的＂推动式＂发展到现在的＂交互式＂,＂毒性＂变得更强,＂参与性＂变得更高。     

大学生网络视频检索与浏览行为研究

进入信息时代,信息技术与互联网得到迅猛发展。信息资源已实现从文字到图片到视频的转变与普及。相对于文本与图像,视频所涵盖的内容更加丰富,表达信息更为直接。本研究从用户信息行为领域入手,立足于国内外研究者涉足较浅的视频检索领域,通过调查大学生群体对网络视频的检索与浏览行为的相关内容,分析该群体对网络视频检索与浏览行为的相关原因进行研究。     

企业开展网络视频营销的策略及有效性研究

网络视频具备电视和互联网的优点,已成为企业营销的重要渠道。本文介绍了网络视频营销的特点,讨论了网络视频营销的制作和推广策略,并通过典型案例分析验证了营销策略的有效性。     

Online Versus Offline in the United States: Are the Media Shrinking?

We find that combined revenues for 10 major media in the United States have steadily declined as a proportion of overall economic activity or gross domestic product (GDP) from 1999 to at least 2009 (the latest year for which we have complete data). For individual media, we find a generally consistent pattern in which increasing revenues from Internet distribution are exceeded by declines in revenues from established distribution channels, with the exception of television and video games, whose revenues have so far kept pace with GDP. We also report a marked overall shift from advertiser to direct payment support for the media industries over this period. We consider four possible reasons for these revenue trends: shifts in consumer media usage, reduced appropriability due to more difficult copyright protection, inadequate advertising business models, and reduced costs due to more efficient Internet distribution. Our analysis suggests we may be entering an era of a declining size of media industries in terms of conventional measures, but not necessarily a falling supply of media products themselves.     

一种视频镜头边界检索方法及其应用

提出了一个基于关键区域色彩矩阵的视频镜头检测方法,详细地描述了这种方法的原理,并比较了该方法与其它方法的优缺点,最后阐释了该方法在视频内容检索系统中的运行策略。     

MOOC环境下视频资源设计研究

MOOC为世界各地的学习者提供了优质免费的高等教育资源和完整的学习体验。视频资源是MOOC环境下学习课程知识的主要途径。对高质量的MOOC视频资源设计特点及设计原则进行了论述,在确定视频教学内容的基础上,选择相应的视频开发技术手段和视频媒体信息呈现形式,进行了设计与实现。     

Participation, Remediation, Bricolage: Considering Principal Components of a Digital Culture

Within media theory the worldwide shift from a 19th-century print culture via a 20th-century electronic culture to a 21st-century digital culture is well documented. In this essay the emergence of a digital culture as amplified and accelerated by the popularity of networked computers, multiple-user software, and Internet is investigated in terms of its principal components. A digital culture as an underdetermined praxis is conceptualized as consisting of participation, remediation, and bricolage. Using the literature on presumably “typical” Internet phenomena such as the worldwide proliferation of independent media centers (indymedia) linked with (radical) online journalism practices and the popularity of (individual and group) weblogging, the various meanings and implications of this particular understanding of digital culture are explored. In the context of this essay, digital culture can be seen as an emerging set of values, practices, and expectations regarding the way people (should) act and interact within the contemporary network society. This digital culture has emergent properties with roots in both online and offline phenomena, with links to trends and developments predating the World Wide Web, yet having an immediate impact and particularly changing the ways in which we use and give meaning to living in an increasingly interconnected, always on(line) environment.     

Drawing Conclusions from New Media Research: Reflections and Puzzles Regarding Children's Experience of the Internet

New media studies are now benefiting from a burgeoning of empirical studies and theoretical analyses from diverse academic disciplines seeking to locate new media, especially the Internet, within longstanding traditions of social science research. By reviewing and reflecting upon findings from UK Children Go Online, a multimethod research project examining the role of the Internet in children's and young people's everyday lives, the present article takes the opportunity to draw out some general conclusions, and associated puzzles, to guide future research. These contribute toward an emerging framework for understanding questions regarding new media access, use, and consequences within the social, cultural, and political parameters of young people's lives. A range of research findings are discussed that illuminate the shifting balance of opportunities and risks posed by the Internet for children, youth, and the family.     

Participation,Remediation, Bricolage: Considering Principal Components of a Digital Culture

Within media theory the worldwide shift from a 19th-century print culture via a 20th-century electronic culture to a 21st-century digital culture is well documented. In this essay the emergence of a digital culture as amplified and accelerated by the popularity of networked computers, multiple-user software, and Internet is investigated in terms of its principal components. A digital culture as an underdetermined praxis is conceptualized as consisting of participation, remediation, and bricolage. Using the literature on presumably “typical” Internet phenomena such as the worldwide proliferation of independent media centers (indymedia) linked with (radical) online journalism practices and the popularity of (individual and group) weblogging, the various meanings and implications of this particular understanding of digital culture are explored. In the context of this essay, digital culture can be seen as an emerging set of values, practices, and expectations regarding the way people (should) act and interact within the contemporary network society. This digital culture has emergent properties with roots in both online and offline phenomena, with links to trends and developments predating the World Wide Web, yet having an immediate impact and particularly changing the ways in which we use and give meaning to living in an increasingly interconnected, always on(line) environment.     

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。     

精品视频公开课建设的要素分析

精品视频公开课建设在满足高校服务社会需求、传承宣传文化职能,便于大家终身学习等方面的引领作用巨大。本文针对精品视频公开课建设,阐述了我国精品视频公开课建设的背景和内涵,讨论了教育教学通向网络化和国际化的进程中需要准备和强化的重要环节,分析了我国建设精品视频公开课的基本要素。通过教师良好的学术素养、较高的学术水平、严谨的教学组织、感染力强的授课风采和人格魅力,着力体现精品视频公开课程的思想性、科学性、生动性和新颖性,打造充满活力、富有效率、更加亲和的精品视频公开课程,不断完善和丰富教育的知识生产、传播、应用以及创新等功能,可持续地增强我国文化软实力和中华文化国际影响力。     

Multi-Sentence Video Captioning using Content-oriented Beam Searching and Multi-stage Refining Algorithm

With the increasing growth of video data, especially in cyberspace, video captioning or the representation of video data in the form of natural language has been receiving an increasing amount of interest in several applications like video retrieval, action recognition, and video understanding, to name a few. In recent years, deep neural networks have been successfully applied for the task of video captioning. However, most existing methods describe a video clip using only one sentence that may not correctly cover the semantic content of the video clip. In this paper, a new multi-sentence video captioning algorithm is proposed using a content-oriented beam search approach and a multi-stage refining method. We use a new content-oriented beam search algorithm to update the probabilities of words generated by the trained deep networks. The proposed beam search algorithm leverages the high-level semantic information of an input video using an object detector and the structural dictionary of sentences. We also use a multi-stage refining approach to remove structurally wrong sentences as well as sentences that are less related to the semantic content of the video. To this intent, a new two-branch deep neural network is proposed to measure the relevance score between a sentence and a video. We evaluated the performance of the proposed method with two popular video captioning databases and compared the results with the results of some state-of-the-art approaches. The experiments showed the superior performance of the proposed algorithm. For instance, in the MSVD database, the proposed method shows an enhancement of 6% for the best-1 sentences in comparison to the best state-of-the-art alternative.     

基于流媒体技术的在线视频课件的设计与实现

流媒体技术是利用TCP协议和UDP协议之间的差别,在通信双方之间使用HTTP/TCP来传输联络信息,通过RTP/UDP协议传输多媒体文件的内容。这一工作方式极大地提高了多媒体教学资源在网络上的传输速度。基于流媒体技术的在线视频课件的设计与实现方法,包括流媒体教学课件的制作以及课件的点播实现。这种设计和实现具有交互性、易于向其它硬件平台移植、易于维护、投入少等特点,适合开发视频应用,对实现高效在线学习具有重要的现实意义。     

基于系统动力学模型的政务短视频网络舆情动力演化分析

[目的/意义]随着5G时代的到来,短视频的信息传播成为引导网民舆情的重要工具,如何运用政务短视频导控网络舆情成为政府面临的新挑战。[方法/过程]将政务短视频网络舆情分为舆情事件、网民和政务短视频三个子系统,借助Vensim PLE软件,构建政务短视频网络舆情多主体应对仿真模型,并结合具体案例"黑龙江疫情反弹"仿真分析子系统中各影响因素之间的相互作用关系,探究政务短视频网络舆情传播的动态机制。[结果/结论]结果表明:政务短视频网络舆情受舆情事件、网民、政务短视频子系统及其相关因素的共同影响。因此,政务短视频可以通过控制三个子系统的相关因素,有效应对和导控网络舆情。     

流媒体技术及其应用与发展

Internet的迅猛发展和普及为流媒体业务的发展提供了强大的市场动力,流媒体业务正日益流行,广泛应用于互联网信息服务的方方面面.首先介绍了流媒体技术及相关概念,描述了流媒体技术在远程教育、视频点播、视频会议及互联网直播方面的应用;最后对流媒体技术的最新发展进行了展望.     

流媒体在视频新闻传播中的应用

本文从流媒体的特点及相关技术入手，对流媒体技术在网络视频新闻传播中的应用现状进行了研究；并通过分析其网络传播中存在的难点及对策，初步探讨了流媒体新闻的发展前景。     

基于i.MX27的视频监控系统设计与开发

目前视频监控以其直观方便、信息内容丰富而广泛应用于民用、军事、工业领域等场合,在人们的日常生活中发挥着越来越重要的作用。本文设计了一种基于嵌入式WinCE操作系统的视频监控系统。以i.MX27为核心,通过传感器进行图像的采集,对采集的数据进行压缩编码,采用GPRS无线传输模块将压缩后的信息传输给远程的PC机,利用软件将接受到的信息解压并显示。     

基于运动特征的视频检索技术

运动特征是描述视频内容的一种重要信息，本文介绍了一个基于运动特征的视频检索系统。提出了描述全局摄像机运动及特征提取方法。     

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。     

新媒体时代短视频信息传播影响力研究

【目的/意义】探索新媒体时代短视频信息传播影响力,有助于新闻媒体机构针对受众特点改进自身的传播 模式,为相关机构或部门在进行社会治理的过程中提供更及时、丰富、准确的信息服务。【方法/过程】以新闻媒体机 构官方账号为研究案例,爬取短视频新闻对应的点赞量、评论量、播放量、弹幕量等用户信息数据。从点播指数、互 动指数、利用指数三个方面设置权重,构建短视频传播影响力指数（VDI）。综合视频播放时长、视频数量、视频内容 及制作形式等多个维度测算短视频新闻的信息传播影响力,分析其传播效果的影响因素。【结果/结论】研究结果表 明,视频播放时长对短视频传播效果具有显著的影响,受众特征与制作水平是影响短视频传播效果的重要因素,弹 幕能够有效促进短视频传播过程中的即时影响力。【创新/局限】研究中获得的相关结论能够为相关新媒体部门利 用短视频了解社情民意,并为正确引导网络舆情提出科学依据。未来的相关研究将会采集更广泛的数据进行更深 层次的观点挖掘。