Present day continuous media applications have real-time requirements which must be satisfied by the transport service of the network infrastructure used, and the degree to which these requirements are met have a direct impact on performance, perhaps rendering the application inoperative. Therefore it is desirable to perform performance monitoring, through such performance parameters as delay, ...

Transporting a stereo video stream over an unreliable channel can degrade severely the video quality. Network congestion is one of the important factors affecting the video quality. To improve the stereo video quality, a stereo video congestion control method, based on the macroblock importance, is proposed. Firstly, the importance of every macroblock is calculated according to its influence on...

The paper concerns available steganographic techniques that can be used for creating covert channels for VoIP (Voice over Internet Protocol) streams. Apart from characterizing existing steganographic methods we provide new insights by presenting two new techniques. The first one is network steganography solution which exploits free/unused protocols’ fields and is known for IP, UDP or TCP protoc...

Compressed video sequences are very vulnerable to channel disturbances especially when they are transmitted over the packet erasure channels. The transmission errors 1 caused by packet loss not only corrupt the current decoded frame, but also cause the error propagation to the succeeding frames which degrades the quality of services. Therefore, it is considerably important to develop the error ...

The aim of this study was to assess the modulatory effect TcpA in expression CEACAM1 adhesin molecule and IL-1, IL-8, TNF-α pro-inflammatory cytokines Coculture model Caco-2/PBMC (peripheral blood mononuclear cell) that can mimic intestinal milieu. gene from Vibrio cholerae ATCC14035 cloned pET-28a transformed into Escherichia coli Bl-21. recombinant TcpA-His6 protein expressed purified using N...

There are many transport protocols that can be used for streaming multimedia over best-effort networks. These protocols are designed are designed to enhance the services of the underlying transport protocol (i.e. TCP/IP or UDP/IP). The Real-time Transport Protocol (RTP) is used for facilitating the streaming of multimedia data packets whilst the Real-time Transport Control Protocol (RTCP) is us...

Status of this Memo This document is an Internet-Draft. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any t...

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