Applied Mechanics and Materials Vols. 427-429

Abstract: To deal with the problem of external storages management in multiple virtual machines environment, a system design scheme of external storages management is proposed with the idea of virtual memory management and protocol of object-based Network storage. Experiments showed that virtual partition could be created and repealed dynamic, the capability of partition could be increased dynamic with practical requirement, and write protection based partition could also be realized, flexibility of external storages management is enhanced greatly and usage efficiency also increased notably.

Abstract: Alert classifiers built with the supervised classification technique require large amounts of labeled training alerts. Preparing for such training data is very difficult and expensive. Thus accuracy and feasibility of current classifiers are greatly restricted. This paper employs semi-supervised learning to build alert classification model to reduce the number of needed labeled training alerts. Alert context properties are also introduced to improve the classification performance. Experiments have demonstrated the accuracy and feasibility of our approach.

Abstract: To support mobile communications in remote pastoral areas of Tibet effectively, this paper proposes an integrated wireless communication system including mobile ad hoc network (MANET), wireless senor network (WSN), cellular network and Beidou satellite network. The overall integrated wireless communication system and the relevant elements are described specifically. The proposed system can help to reduce the network deployment cost and provide voice, message and low rate data services.

Abstract: A decision support system (DSS) for broadcasting and television is proposed in this paper. This broadcasting and television DSS fills the blank of broadcasting and television business & operation support system (BOSS). It is also bridging the industry chain of broadcasting and television system. The result of typical model for broadcasting and television DSS proves its validity.

Abstract: This paper we investigates the security and reliability of network transactions, especially, analyze the structure and mechanism of SSL protocol, and point out the disadvantages of the SSL protocol, and propose the corresponding improvement measures.

Abstract: Based upon the synopsis of the third party testing, this paper describes the basic contents of the third party testing, and then puts forward the practical methods, essentials and process of the third party testing. Meanwhile, testing analysis and policy are presented. This will benefit the development of software and information system.

Abstract: As a low-consumption, low-cost, distributed self-organized network, wireless sensor network communicates as a self-similar, small-world and scale-free complex network. Based on the defects analysis of digital communication and sufficient necessary condition of analog signal synchronization, we proposed a novel key distribution scheme in this paper. While some performance analyses as well as some prospects are also given in the end.

Abstract: In opportunistic networks, routing algorithms based on community division have some redundant forwarding in the process of message transmission. In this paper, we propose a community-based message transmission algorithm (CMTA). CMTA makes fully use of the nodes within communication overlapping areas to forward messages and optimizes forwarding determination mechanism to carry message nodes, then CMTA redesigns the message transmission condition and reduces the number of message forwarding which improve the efficiency of forwarding messages and reduce the average end-end delivery delay. Theoretical analysis and simulation results show that CMTA outperforms an existing Epidemic routing algorithm and the Prophet algorithm and CHMTS in terms of delivery ratio, average end-end delivery delay, relay ratio, etc.

Abstract: Connectivity is the fundamental of the Ad Hoc wireless network for end to end data transmissions. It becomes difficult to keep the connectivity when uncertain features increase, such as fading channels and interference in the network. Based on the theory of stochastic geometry, a SIR model is used to calculate the link probability between nodes. We derive a tight explicit expression for the connectivity probability in the present of Rayleigh fading and interference. According to this expression, we can optimize network topology efficiently. Simulation results validate the accuracy of our conclusion.

Abstract: Combining network coding, a wireless broadcasting retransmission strategyMost Lost Packets Priority is proposed to decrease the number of retransmissions, preferentially consider nodes which have most lost packets, choose the suitable packets to be encoded and retransmission in order to reduce the number of retransmissions, increase network efficiency in wireless network. It is showed in experiment that compared with BENEFIT, MLPP can reduce the average number of retransmissions, and make the average number of retransmissions closer to the preferential number of retransmission and improve the transmission efficiency.