Xiuyan Jiang

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Network traffic is a rich source of information for security monitoring. However the increasing volume of data to treat raises issues, rendering holistic analysis of network traffic difficult. In this paper we propose a solution to cope with the tremendous amount of data to analyse for security monitoring perspectives. We introduce an architecture dedicated(More)
With China Telecom IPTV system rapidly expanding, reducing operating and deployment costs has become an important issue. To improve IPTV transmission efficiency, using P2P technology is one of the possible solutions. This paper presents a new real-data-stimulated simulation assessment method for P2P-assisted telecom IPTV systems. The new method first(More)
In Smart TV Live Multicast systems, packet loss is one critical factor that causes OoS(Quality of Service) decreases, OPRSFEC (Optimized Reed-Solomon Forward Error Correction) provides an end-to-end method of packet loss recovery in the application layer which can recover lost packets completely (when the loss rate is less than 5%) with few computational(More)
End-user Quality of Experience (QoE) monitoring is critical to IP-based commercial TV service. REQMM is a middleware which provides a novel video quality assessment method based on Decode Buffer probing (DBP), service failure detection and Request Response Time (RRT) calculation. DBP probes Transport Stream (TS) packet loss, overflow and underflow at(More)
A method of capillary electrophoresis with wall-jet amperometric detection (AD) has been developed for separation and determination of l-tyrosine (Tyr) and its metabolites, such as Tyramine (TA), p-hydroxyphenylpyruvic (pHPP), homogentisic acid (HGA) and some dipeptides containing Tyr, such as Tyr-Gly-Gly (YGG), Tyr-Arg (YR) and Tyr-d-Arg (Y-d-R). A carbon(More)
CZE with UV-absorption detection has been used for the separation and determination of enkephalin-related peptides. The experimental conditions, such as pH and concentration of running buffer, applied voltage, injection method, and time, were investigated in detail. Excellent separation efficiency could be obtained for ten enkephalin-related peptides with a(More)
Video-on-Demand (VOD) has been gaining increasing popularity in recent years. Previous load balancing algorithms in video servers mainly focus on two resources: storage and network bandwidth. However, with better network and cheaper disk, disk I/O becomes more critical in reducing user-perceived latency. In this paper, we propose an algorithm for disk I/O(More)
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