Papers by Author: Hai Yun Lin

Abstract: In respect of the classification of current image retrieval technology and the existing issues, the paper put forward a method designed for image semantic feature extraction based on artificial intelligence. The new method has solved the tough problem of image semantic feature extraction, by fusing fuzzy logic, genetic algorithm and artificial neural network altogether, which greatly improved the efficiency and accuracy of image retrieval.

Abstract: Along with the increasing number of Chinese automobiles in cities, the vehicle management becomes a difficult issue. The effective management on vehicle is to identify the vehicle. RFID technology can be used for the access control management, which can serve an effective way to identify the vehicles, making access control management of the security protection more effective and intellective[1] . Access Control System based on RFID protocol is proposed, and then introduces a model of system and gives a brief description of each component of the model, A detailed explanation about the implementation of each model is given.

Abstract: The basis to build effective network security protection is to reasonably evaluate on network security. Based on analysis on shortcomings of existing network security evaluation methods, the paper built network security evaluation index system according to CC specifications. The advantages of local variable weight comprehensive method were analyzed and the method of network security evaluation based on combination of AHP and local variable weight was presented. The evaluation example on some network elements indicates that the method evaluate on overall information security level, so that the evaluation result be objective and reasonable.

Abstract: Active queue management algorithm works at network routing node. It notifies terminal system control transmission rate in advance with discard or mark packet before buffer queue overflows, so as to avoid congestion. Aiming at characteristics of wireless sensor network (WSN) and based on introduction of traditional RED algorithm, the paper introduced H parameter to represent traffic similarity to original linear relationship between packet loss probability and average queue length to form the non-linear relationship related to self-similarity. Then a kind of improved RED algorithm of WSN oriented to self-similar traffic was proposed. The detail implementation flow was also provided. Simulation based on OPNET shows that the improved RED is superior to traditional RED algorithm in steady performance.

Abstract: In this paper the measurement concept of QoE related to mobile video streaming in 3G network environment is introduced. The state-of-the-art tools created for automatic data capturing in field experiments are compared. Results of a semi-Living Lab experiment using the MyExperience in-situ measurement tool are presented and analyzed. Five orthogonal QoE aspects are proposed by performing Principal Component Analysis on 17 question items from the questionnaires. Technical-quality related QoE aspects are modeled by the technical QoS parameters (at wireless infrastructure and network level) measured during the experiment. It is shown that QoE of mobile video streaming is influenced by the QoS and by the context also.