DECnet网络实时文件传送应用层通信模块开发

本文介绍了基于ＴＦＡ开发的用于ＤＥＣｎｅｔ网络实时文件传送的应用层通信模块和层协议。     

一款大规模P2P网络电视系统的污染攻击研究

With the rapid development of Peer-to-Peer (P2P) technology, IPTV applications based on that have received more and more attention from both industry and academia. Several applications using the data-driven mesh-pull architectures raised and gained great success commercially. At present, PPLive system is one of the most popular instances of IPTV applications which attract a large number of users from across the globe. At the same time, however, the dramatic rise in popularity makes it more likely to become a vulnerable target. In this paper, we propose an effective measurement architecture, which is based on the peer’s nature not only receiving polluted video chunks but also forwarding those to other peers, to measure the video streaming pollution attack and then use a dedicated crawler of PPLive developed by us to evaluate the impact of pollution in P2P live streaming. Specifically, the results show that a single polluter is capable of compromising all the system and its destructiveness is severe.     

“橙浊”的卫生质量检测和毒性试验报告

“橙浊”(Orange Emulsion)是由香料、天然树胶、食用植物油、酸味剂和乳化剂,并添入着色剂、防腐剂及抗氧化剂等物质混合乳化而成。主要用于登香型饮料(如橙汁汽水)中,使饮料在颜色、香味和混浊性状等方面达到一定要求,具有鲜橙汁的质感和风味。目前国内所使用的“橙浊”,都是从国外进口的。据我们统计,1983年经广     

多旋翼无人机在输电线路巡检中的应用局限及发展前景

随着电网规模的不断扩大,输电线路传统的人工巡检方式已无法适应新形势下的运行维护要求。以多旋翼无人机为载体,地面监控设备为支撑的输电线路巡检系统,正受到越来越广泛的关注。但目前多旋翼无人机尤其是输电用无人机还处于发展初期,无法适应当前繁重复杂的输电线路巡检要求。分析了输电线路巡检的特殊要求,总结了当前输电线路无人机巡检存在的诸多问题,最后从输电运检实际出发,针对未来多旋翼无人机的发展提出了一些建议。