自媒体发展给政府监管带来的挑战

自媒体作为引领新世纪媒介行业发展的主流平台,其模糊了传者与受者的界限,让信息可以无限增值、蔓延。于自媒体自身的特点给政府监管带来许多问题,主要从自媒体出发,分析其独特的特点,提出了政府监管自媒体所面临的众多问题以及给出一些可行性建议。     

Perceptions and use of electronic media: Testing the relationship between organizational interpretation differences and media richness

How do managers perceive and use media? Media richness theory (MRT) appears to provide persuasive answers to this, but does it work when electronic media is used? Surveys of Japanese managers showed that the perceptions of media, including electronic media, did not contradict MRT. But, even so, the use of rich media was found to be influenced more strongly by whether the media was traditional or electronic, with respect to organizational interpretation of its environment. The perception and use of electronic media may not correspond, though they have generally been assumed to do so.     

设计知识产权的归责与请求

知识产权侵权归责原则是知识产权侵权法理论的核心问题,也是司法实践中处理知识产权案件的重要准则,因而很值得探讨。我国学术界和实务界对这一问题的认识存在分歧,其中一种突出的观点是主张无过错责任原则。但在设计知识产权问题上,该原则显得非常不符合行业现状和需要。作者主张设计知识产权侵权归责应实行过错责任原则,并在考察侵权行为法、知识产权法相关原理的基础上对无过错责任论提出质疑。     

Online vigilante justice Chinese style and privacy in China

It cannot be denied that the Internet continues to have a significant impact on the social, cultural, commercial and political aspect of everyday life. While it can be said that the impact is generally positive, a phenomenon has arisen where the technology can be used to publicly shame, harass and humiliate a person with devastating effects. This article examines the increasing use of human flesh search as a valve for the community in China to express dissatisfaction over local injustices and to enforce social norms and moral values. It then discusses such use can lead to an infringement of privacy. This article continues by analysing the landmark Beijing Court's decision in Wang Fei v. Zhang Leyi, Daqi.com and Tianya.com. The case is significant as in that not only is the case the first case that recognizes human flesh search and its impact on mainstream society but it also provides judicial recognition of Chinese citizens' right to privacy. Finally, this article considers the right to privacy and reputation as well as the liabilities that can arise under the recently enacted Chinese Tort Law.     

流媒体传输协议及其应用开发

文章分析了流媒体实时传输的主要协议ST-Ⅱ、RSVP、RTP、RTSP、IPv6,探讨了它们对流媒体实时传输的机制,构建了基于WindowsMedia的流媒体实时传输系统。     

Windows Media技术在网络教学中的应用

本文介绍了Windows Media技术的要点,设计并构建了采用Windows Media技术的网络多媒体教学系统,以较低的代价实现了多媒体在网络教学中的应用。     

Real与Media流媒体技术比较

通过研究和实例设计,探讨了Real流媒体技术和Media流媒体技术的异同之处,以及在应用当中各自的优缺点。     

Visualization of Understanding of Media Characteristics Using Analytic Hierarchy Process

The purpose of this study is to design a tool, adapted to students＇ individual contexts and to enable students to reflect on their understanding of media characteristics. AHP （analytic hierarchy process） is a structured technique for organizing and analyzing complex decisions. Using AHP, students have to define appropriate criteria and priorities for using media. It is expected that students＂ understanding of the characteristics of different types of media will emerge through reflection. Seventy two university students took part in this research. They were asked to prioritize their ways.of obtaining information about current affairs using sets of media such as TV, books, newspapers and web pages, Twitter and Facebook. AHP enables us to visualize a ＂real＂ understanding of media characteristics and students can reflect on that basis. As far as ＂information sources and media＂ is concerned, a few students indicated that it was the information source itself that was important rather than the type of media. Our tool fulfils the role of encouraging this type of reflection.     

Civil Society in Times of Crisis: Understanding Collective Action Dynamics in Digitally‐Enabled Volunteer Networks

Social media play an important role in political mobilization. Voluntary engagement can especially benefit from new opportunities for organizing collective action. Although research has explored the use of Twitter by decentralized individuals for this, there has been little emphasis on its use for community engagement and the provision of public goods. Even less is known about its role in the emergence and offline expansion of spontaneous self‐organized solidarity initiatives. This paper investigates how networked communication facilitates self‐organization and the development of ties in a network of volunteers in Greece. To examine whether initiative‐specific community feelings that can transcend online‐offlsine divides evolve in such hybrid networks, the analysis is complemented with individual‐level data drawn from a survey with the initiative's volunteers.     

The Continuous Media Web: a distributed multimedia information retrieval architecture extending the World Wide Web

The World Wide Web, with its paradigms of surfing and searching for information, has become the predominant system for computer-based information retrieval. Media resources, however information-rich, only play a minor role in providing information to Web users. While bandwidth (or the lack thereof) may be an excuse for this situation, the lack of surfing and searching capabilities on media resources are the real issue. We present an architecture that extends the Web to media, enabling existing Web infrastructures to provide seamless search and hyperlink capabilities for time-continuous Web resources, with only minor extensions. This makes the Web a true distributed information system for multimedia data. The article provides an overview of the specifications that have been developed and submitted to the IETF for standardization. It also presents experimental results with prototype applications.     

基于.NET的视频点播系统的设计与实现

介绍了一种新的基于.NET的视频点播系统的开发方法。采用Browser/Server模式、完整的三层结构设计,使用C#语言编写程序,提供了一套多用户并发访问的视频点播解决方案,支持文件分类、支持客户端的自动更新。介绍了大容量文件的上传方法、视频播放器的嵌入技术以及文件管理办法,实现了解码器主动下载更新和文件在不同磁盘或不同服务器间的分布式存储。不但支持目前主流的流媒体格式文件,而且还支持PPT、Flash等其它格式文件的上传和播放。     

The Social Media Disorder Scale

There is growing evidence that social media addiction is an evolving problem, particularly among adolescents. However, the absence of an instrument measuring social media addiction hinders further development of the research field. The present study, therefore, aimed to test the reliability and validity of a short and easy to administer Social Media Disorder (SMD) Scale that contains a clear diagnostic cut-off point to distinguish between disordered (i.e. addicted) and high-engaging non-disordered social media users.Three online surveys were conducted among a total of 2198 Dutch adolescents aged 10 to 17. The 9-item scale showed solid structural validity, appropriate internal consistency, good convergent and criterion validity, sufficient test-retest reliability, and satisfactory sensitivity and specificity. In sum, this study generated evidence that the short 9-item scale is a psychometrically sound and valid instruments to measure SMD.     

媒体分发网络存储策略优化

针对媒体分发网络（MDN）系统中现有媒体分发存储策略所存在的问题,为进一步提高系统的性能和满足更多用户的点播请求,提出一种基于分块的存储策略,该策略通过对每部影片进行分块及对所有影片块定期进行热度的排序决定MS和PN所需存储的相应影片内容。通过NS2仿真平台所搭建的MDN系统进行实验验证表明,该存储策略能够更好地改进用户点播请求的响应时间及本地数据击中率。     

视频点播系统的设计与实现

VoD（视频点播）是以“用户自主”的崭新概念为基础的双向视音频信息系统，它实现了用户按需播放视音频节目的愿望。该文介绍了视频点播系统与流媒体技术的基本组成和功能。提出了一个视频点播系统的具体设计与实现方案，并详细探讨了系统在设计与实现中所采用的相关技术与方法。系统经实际使用证明是可行的。     

连续媒体存储技术的研究

分析了连续媒体存储面临的问题和技术现状,提出了一种创新的存储软件/硬件架构－虚拟分级存储架构(VHSA)。VHSA是分级存储技术和存储虚拟化技术的结合,支持异构的存储系统结构,可提高复杂存储系统的性能和效率,针对巨大的视听内容进行数字归档,并可与媒体资产管理系统实现无缝集成。     

复合流式媒体的同步与带宽自适应的研究

提出了一种在客户端进行同步控制的方案,采用基于流内同步的流间同步方法,可以实现多个流媒体的同步播放,并且能够对信道带宽变化作出反应,根据多个流媒体之间的优先级关系自动调整各个流媒体的比特率,保证整体播放质量。     

Making sense of multitasking: The role of Facebook

Media multitasking and Facebook use are commonplace among college and university-aged students. While the two are often linked and each has been independently associated with reductions in academic performance, their relationship to each other is not particularly well understood.This relationship was examined by analysing comprehensive time-based logs of students' computer-based tasks, including Facebook, during unsupervised, self-directed learning sessions. A total of 3372 sessions contributed by 1249 students were analysed. Multitasking was extremely common – around 99% of sessions involved some multitasking (at least three instances of a particular task within a 20 min period). Facebook was the second most common task overall (University was first), accounting for 9.2% of all task instances and being present in 44% of sessions. Sessions containing Facebook typically contained more, shorter duration tasks and were significantly more likely to include multitasking behaviour. The introduction of Facebook within a session was associated with an increase in multitasking and a reduction in focused (no more than two tasks in a 20 min period) behaviour. Facebook users (students who contributed at least five sessions and used Facebook in at least one of these sessions) were also more likely to multitask and less likely to engage in focused behaviour. These results confirm that Facebook use is a key contributor to students' task switching and multitasking behaviours.     

人机交互中的多媒体信息：希望与问题

一、引言 计算机应用的迅速发展越来越要求我们把整个人机系统而不仅仅是计算机系统为考虑问题的着眼点,去研究如何提高人机系统的整体效率,进而达到提高人的工作效率这一本目的。决定人机系统