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It is an important task to provide the QoS-insured live media application in dealing with the fault effectively. The paper suggests a classification method to perform online fault management in the Live Media Service Grid (LMSN), which adopts online fault management, and can achieve low-overhead online learning, and adaptively adjust measurement sampling rates based on the states of monitored components,...
Grinding method is an effective way to process hard and brittle materials, such as ceramics. However, it is necessary to control the grinding force to achieve the desired surface quality and dimensional precision of ceramics parts. In this paper, we present the study results of the influence of machining parameters on the grinding force and its influence on machining performance such as machining...
In order to avoid the influence of speed sensor and the parameter change as a result of the temperature variety on the system performance, a sensor-less vector control system based on model reference adaptive system (MRAS) for asynchronous motor is described in this paper. The rotor speed and magnetic flux are identified online with full order adaptive observers correctly and rapidly. The simulation...
An Active XML (AXML for short) is an XML document where some of the data is given explicitly while other parts are defined only intentionally by means of embedded calls to Web services. Tree automata are extended from traditional string automata and accept regular tree languages. In this paper, the connection between tree automata and AXML was surveyed. Specially, the methods of how to build the corresponding...
The current inter-domain routing protocol (BGP) selects only single route for each destination prefix, which may not satisfy the ISP's requirements of routing visibility and controllability. Recent proposals for source routing and overlay networks enhanced the end-to-end path control for end users, but leaved the transit ASes with little control to routes. In this paper, we propose an active multi-path...
The beam-to-depth ratio of high extremely thin wall elliptical welded pipe's is bigger, the diameter-thickness ratio is bigger, wall thickness is thinner, so it is difficulty to design the roll pass. In this paper, the specification and the difficult of the high extremely thin wall elliptical welded pipe is analyzed, the design method of roll pass is introduced. After the first round by into design,...
It is necessary to control the P2P traffic among ASs (autonomous systems) while the P2P applications occupy the most bandwidth of the backbone network. Instead of only restricting the P2P applications, the paper suggests an intelligent relay method based on P2P communities model. The proxy of content caching (PCC) nodes is proposed which are used to manage the local content cache in the P2P communities...
In this paper, we present a framework to facilitate reputation-based service discovery, which has three key features. First, we use a peer-to peer overlay network as the decentralized service repository system for improved efficiency. Second, we propose an adaptive QoS-aware service discovery approach. Then, we present a service-oriented distributed reputation assessment algorithm based on user??s...
QoS-based service selection mechanisms will play an essential role in service-oriented architectures, as e-business applications want to use services that most accurately meet their requirements. However, current techniques provide no support for actually making rational selections. In this paper, we develop a multiagent framework for QoS-based Web services selection, through a combination of the...
We present the design of session initiation protocol (SIP) conference based on application layer multicast. Based on the character of SIP conference, we offered a new algorithm to create an application layer multicast tree. In this application layer multicast tree, the two key factors of both bandwidth and delay in streaming media are taken into consideration. The simulation and the experiments show...
P2P systems have high scalability, robustness and fault tolerance because of its no centralized server and the network self-organized itself As the standard protocol for VoIP and NGN, SIP is a general protocol for establishing and controlling multimedia session. In this paper, we proposed a real-time streaming media sharing mechanism based on P2P and SIP, which uses Chord as the underlying distributed...
With the advance of wireless personal communication, multimedia applications are becoming popular in mobile networks. Following this trend, we propose MSON, a multimedia service overlay networks Based on SCTP, enabling large-scale live media application in ubiquitous environment. MSON is a comprehensive and scalable solution to flexibly compose media services and can provide QoS guarantees for the...
A design method of sliding mode controller with integral compensation is proposed for a class of nonlinear systems with uncertain in disturbances. To eliminate chattering in sliding mode control, a boundary layer around the switch surface is used, and the integral control that is used to improve the system performance in steady-state is introduced within the boundary. The control system stability...
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