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Synchronization-Oriented Placement and Retrieval Strategies for Delay-Sensitive Media Streams
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Multimedia data include text,image,audio and video,etc.Recent developments and advances in the areas of mass storage technology and high speed networks make it feasible for multimedia computing systems to offer services such as multimedia e-mial,teleconferencing and various vivid games.The storage and retrieval of multimedia data are two of the most important technologies in the futre multimedia systems.This paper analyzes the synchronization requirements of the delay-sensitive media streams,classifies the synchronization hierarchically and proposes several effective strategies for the intra-media and inter-media data placement problems. 相似文献
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Fingerprint-Based Identity Authentication and Digital Media Protection in Network Environment 总被引:1,自引:1,他引:1
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Current information security techniques based on cryptography are facing a challenge of lacking the exact connection between cryptographic key and legitimate users. Biometrics, which refers to distinctive physiological and behavioral characteristics of human beings, is a more reliable indicator of identity than traditional authentication system such as passwords-based or tokens-based. However, researches on the seamless integration biometric technologies, e.g., fingerprint recognition, with cryptosystem have not been conducted until recent years. In this paper, we provide an overview of recent advancements in fingerprint recognition algorithm with a special focus on the enhancement of low-quality fingerprints and the matching of the distorted fingerprint images, and discuss two representative methods of key release and key generation scheme based on fingerprints. We also propose two solutions for the application in identity authentication without trustworthy third-party in the network environment, and application in digital media protection, aiming to assure the secrecy of fingerprint template and fingerprint-based user authentication. 相似文献
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Daniel Pérez-González Sara Trigueros-Preciado Simona Popa 《Information Systems Management》2017,34(3):291-301
ABSTRACTThe effective use of technologies supporting decision making is essential to companies’ survival. Recent studies analyzed social media technologies (SMT) in the context of small- and medium-sized enterprises (SMEs), contributing to the discussion on SMT benefits from the marketing perspective. This article focuses on the effects of SMT use on innovation. Our findings provide empirical evidence on the positive effects of SMT use for acquiring external information and for sharing knowledge and innovation performance. 相似文献
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《Information & Management》2022,59(4):103643
We investigate how work-related and personal-related social media (SM) use contributes to Chinese employees’ guanxi identification and extra-role behaviors (ERB). Our findings indicate that work-related SM use is positively associated with team member guanxi identification, which further contributes to employees’ ERB targeting the team. Personal-related SM use is positively related to insider guanxi identification and further contributes to ERB targeting the individual. When team communication is highly dependent on SM, the positive effect of personal-related SM use on guanxi identification is weakened. The results contribute to a nuanced understanding of the crucial role of SM use in the Chinese workplace. 相似文献
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《计算机光盘软件与应用》2004,(12):30-35
Block Media似乎做出了正确的选择。幸存于网络崩溃的这一小公司日渐壮大,吸引了许多大公司与之合作。然而这样一个以娱乐兴趣为目标的公司能否真正发展壮大下去呢?很有可能。 相似文献
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Windows Vista迫在眉睫,集成在Windows Vista中的Windows Media Player 11也倍受瞩目,目前已经能从微软官方网站下载到 Windows Media Player 11的简体中文试用版,相信这个消息对于那些期待Windows Media Player 11的用户来说非常有吸引力。 相似文献
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如今上网并不像前几年那样通过低速的 Modem了,ISDN、DDN、xDSL等宽带上网方式都出现在人们的视野中,甚至有的城市已经开通了有线电视上网的服务。有了这么好的上网条件,网络视听娱乐就成为大家网络生活的重要组成部分了。也许是受到RealPlayer的启发吧,微 相似文献
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Social media has emerged as a significant and effective means of assisting and endorsing activities and communications among peers, consumers and organizations that outdo the restrictions of time and space. While the previous studies acknowledge the role of agents of culture change, it largely remains silent on the role of social media in influencing acculturation outcomes and consumption choices. This study uses self-administered questionnaire to collect data from 514 Turkish-Dutch respondents and examines how their use of social media affects their acculturation and consumption choices. This research makes a significant contribution to consumer acculturation research by showing that social media is a vital means of culture change and a driver of acculturation strategies and consumption choices. This study is the first to investigate the role of social media as an agent of culture change in terms of how it impacts acculturation and consumption. The paper discusses implications for theory development and for practice. 相似文献
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随着Windows Media player的功能日益强大,很多人已将Windows Media player设为自己的默认播放器了,在使用中,你可能会发现在它的下拉菜单中列出了许多曾经播放过的文件,如何来清除这些文件呢?打开注册表编辑器,找到以下键值: 相似文献
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逢年过节的时候,给你的朋友寄去一张自己制作的贺卡就是最好的礼物了。 MediaCenter可以直接将数码相机、扫描仪等外设作为图像的来源,而且还内置了一些常用的图像处理功能。更主要的是能够将wav、video等多种媒体格式文件加入到这个制作的程序中,还能将它保存为.exe格式的可执 相似文献
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Windows自带的Media Player(媒体播放器,以下简称为WMP),功能虽然强大,但是却有很多不足之处。最令用户头疼的是,它默认不支持FLV、RMVB等常见媒体文件,所以不得不再安装一些第三方的播放器。其实只要进行适当的配置和增强,WMP也可以拥有像万能播放器那样的功能,这可以通过自行注册解码器来实现。 相似文献
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在’98北京国际电子出版暨多媒体技术展示会(EP media)上,北大方正展台引人瞩目。 一年一度的EP media展是新闻出版署主管的大型行业技术展会,自1994年首办以来,已经成为展示我国新闻出版领域现代化风貌的重要窗口。本次展会方正以出版系统工程公司为核心,参展阵容空前强大,北大方正面向新闻出版领域、印前领域的全线产品、技术与解决方案全部登场,它们涵盖了北大方正以网络为基础的信息系统集成,包括面向报业、出版业、杂志社的整体解决方案、CTP直接制版技术、多媒体创作软件等等;以RIP和FTT图文排版、处理软件为核心的桌面系统集成,包括面向彩 相似文献