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Xiaogan, China

Ma Z.,Inner Mongolia University of Science and Technology | Yang S.,Baotou Service and Management Vocational School | Xiong Z.,Xiaogan University
Journal of Convergence Information Technology | Year: 2012

An intrusion detection system (IDS) is a new safeguard technology for network system security after traditional technologies, such as access control, firewall and message encryption. The IDS can look for the evidence in the Hosts or the networks to detect some latent threat, and gives passive alerts to the administrators or takes active measures without intervening. However, the IDS has drawbacks in many aspects, among of which the two outstanding problems are the high ratio of false alarms and the lack of self-adaptation. Inspired by the powerful information processing capabilities of the biological immune system (BIS), a novel multi-level active security defense mechanism for computer systems is proposed and described. This mechanism can perform real-time monitoring, detecting and responding in accordance with the needs and preferences of system administrators. In addition, this mechanism utilizes a distributed and multi-hierarchy framework to provide an effective solution for the network intrusion detection. The experimental results show that this mechanism is a good solution for network security evaluation. It can improve effectively the performance of traditional IDSs, especially in the heterogeneous networks and the large-scale high-speed network system. This on-going research effort is to develop a more self-adaptive system that will perform real-time monitoring, analyzing, and generating appropriate response to wide variety of intrusive activities. Source

Cao G.,Xiaogan University
Lecture Notes in Electrical Engineering | Year: 2013

This paper is concerned with strategies on how to deal with errors in Oral Practice. It is conducted by a small scale investigation into students' feedbacks towards teachers' actions and attitudes. Discussion is based on existing researches in this field and the writer's seven-year professional teaching experience. The results of analysis proved that teachers' response to students' errors does influence language learning behaviors. Based on the results, implications for foreign language teaching are suggested. © 2013 Springer-Verlag. Source

Zhang X.,Central China Normal University | Zhang X.,Xiaogan University | Hu X.,Central China Normal University
Physical Review A - Atomic, Molecular, and Optical Physics | Year: 2010

We explore the quantum entanglement between two collective fields via atomic coherence effects. For three-level atoms in V configuration driven by two applied fields on two-photon resonance, one coherent superposition of the excited states is not excited, which is the counterpart of coherent population trapping. The coherence-induced depopulation makes two cavity fields in each collection combine into a quantum-beat, i.e., equivalently, the difference mode of the two components decouples from the driven atoms. The two sum modes, when they are arranged in the four-wave mixinglike interactions, can be prepared in Einstein-Podolsky-Rosen entangled state. Correspondingly, any two individual fields from different collective modes are entangled with each other. Furthermore, the effects of thermal reservoir and laser linewidths are discussed, and a generalization is given to the case in which each quantum beat involves more than two modes. © 2010 The American Physical Society. Source

Wang G.,Wuhan University | Huang T.,Wuhan University | Xiong Z.,Xiaogan University | Hu Y.,Wuhan University
International Journal of Digital Content Technology and its Applications | Year: 2011

By utilizing the Pseudo Wire (PW) and Tunnel structure in PTN (Packet Transport Network) architecture, distributed bandwidth resource allocation scheme is investigated in order to support different levels of Quality of Service (QoS) in information convergence network. The network bandwidth provider and users are formulated in a Stackelberg Game model. An comparison simulation proved that this Stackelberg Game based distributed bandwidth allocation could secure better QoS for high class traffics and generate higher revenues than the flat rate strategy does under the circumstance of sufficient network resources. Source

Zhang Q.,Henan University of Technology | Xiong Z.,Xiaogan University | Liu G.,Henan University of Technology
International Journal of Digital Content Technology and its Applications | Year: 2011

To the noise in the vibration information of long-distance distributed optical fiber-sensing system, discrete wavelet transform was adopted to eliminate. On the basis of analyzing noise eliminating theory, wavelet shrinkage method was proposed and a few kinds of threshold selection rules were discussed. The processing results of different noise eliminating techniques to vibration signal and its energy distribution in frequency domain were simulated and analyzed. The results show that discrete wavelet transform has the same excellent performance with stationary wavelet transform in noise eliminating to vibration signal. Source

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