会议名称：
2008 International Conference on Machine Learning and Cybernetics(2008机器学习与控制论国际会议)
会议时间：
2008-07-12
会议地点：
昆明
会议论文集名称：
2008 International Conference on Machine Learning and Cybernetics(2008机器学习与控制论国际会议)论文集
关键词：
Image of pests in stored grain;Wavelet transform;Edge detection
摘要：
The detection method of pests in stored grain is always investigated. The method of based on image recognition is often discussed.The wavelet transform is the localization analysis of time and frequency, and it can multi-scale refine the signal by calculating of flex and transition. This paper presents a method of using the wavelet transform to detect the image of pests in stored grain edge based on the multi-scale analysis of the wavelet transform in the image processing field. The method acquires the information of the image edge by detecting the image local maxima of the two-dimension wavelet transform. The examples show that the method can obtain better edge detection.
摘要：
Web database is a combined production with database technology and Web technology, it stores and manages a great deal of data, if they are embezzled or juggled, which maybe bring enormous political and economic losses to the society. So it is imperative to properly establish security for Web database against illegitimate intrusion. The host identity protocol (HIP) is designed by the Internet Engineering Task Force (IETF), it introduces a separation between the host identity and location identity, and is used to authenticate the host identity of an end system and to set up a limited relationship of trust between two hosts on the Internet. One Web security model is established using the host identity protocol. Its architecture is given. The security of the model is also analyzed and discussed in the paper.
关键词：
DSSS;RF;WLAN;ARM;embedded system;distributed monitoring control
摘要：
There is no mobile phone devices or wire net line equipments for real-time control in some industrial fields such as metallurgy, mine, transferring port. Therefore, the Wireless Local Area Network (WLAN) monitoring platform system is investigated for these industrial fields in the paper. Using Radio Frequency (RF) wireless distributed network and the embedded technology, the monitoring platform's module structure has been established. The hardware and software of monitoring system have been analyzed. The configure mode of the wireless monitoring devices has also been given. Using the given control modules, RF wireless transmitting, data acquiring and processing of signals, as well as equipment states diagnosing can be implemented. The research shows that the system platform can solve the communication and monitoring problems in such no cable net line equipments and no mobile phone field-working environments and that the control system given has the characteristic of reliability and flexibility. More ever this system is economic, and is auspicious for further applications.
关键词：
Quartz Crystal;Direct Digital Frequency Synthesizer;Vacuum Degree;Resonance Frequency;Resonance Impedance;Vacuum Packaging;MEMS
摘要：
A platform is proposed in this paper for fundamental study of the miniaturized MEMS packaging on its long term performance such as actual vacuum level maintaining inside the packaging cavity, and durability of the packaging shell subjected to cycling thermal loading. In particular, a sensor composed of quartz crystal is introduced for vacuum measurement. The quartz crystal is placed in the internal cavity of the MEMS packaging and is excited by an exciting source which is formed by Direct Digital Synthesizer (DDS). The voltage signal from both ends of the quartz crystal is outputed to comparison circuits to compare the phase and amplitude of the signal. Then it is transmitted to the SCM after AD conversion for measuring and monitoring the vacuum degree of internal cavity of the MEMS package after processing and calibration. It has been found that the actual vacuum level within the cavity is much lower than the applied vacuum level in the packaging chamber. The proposed vacuum packaging shell with double walls has been found to provide perfect structure to help maintain long life when the packaging is subjected to the cycling thermal loading.
会议名称：
2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会(2008 International Symposium on Distributed Computing and Applications for Business Engineering and Science)
会议时间：
2008-07-27
会议地点：
大连
会议论文集名称：
2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会(2008 International Symposium on Distributed Computing and Applications for Business Engineering and Science)论文集
摘要：
In this paper, a Stochastic Petri Net (SPN) model is constructed to analyze the performance of Border Gateway Protocol - Satellite version (BGP-S) in satellite networks. Then, the effects of satellite coverage angle, data packet size, network data rate on average time delay and average throughput are also analyzed using Stochastic Petri Net Package (SPNP) 6.0. Furthermore, a NS-2-based simulation is implemented to validate the correctness of the SPN model. The numerical results of the SPN model show a good match to simulation results of NS-2. Because of its easiness and accuracy, the proposed approach has great benefit to the design and performance analysis of satellite networks.
会议名称：
2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会(2008 International Symposium on Distributed Computing and Applications for Business Engineering and Science)
会议时间：
2008-07-27
会议地点：
大连
会议论文集名称：
2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会(2008 International Symposium on Distributed Computing and Applications for Business Engineering and Science)论文集
摘要：
To renew group key is necessary to ensure secrecy of multicast contents. However how to distribute updated key to all legitimate members efficiently is a hard problem in opening research. All existing works have complexity of O(clogn) in batch re-keying, where c is total additions/evictions. The Minimum Exact Cover Problem of Group Key Distribution is presented and studied, which can reduce the complexity down to O(1). Efficiency analysis and simulation test show that the achievement can improve efficiency of any tree-based group key management.
摘要：
MPI is the one of the most popular parallel programming standards based on message-passing. It provides many kinds of point-to-point communication functions. In this paper, two MPI-Based Extended Petri Net Models are constructed to analyze the procedure during message-passing under full-duplex mode and half-duplex one respectively.
摘要：
The users' need for a mass of synchronization requests cause the appearance of more and more choke point at the end of the server. At present, the usual solution is to apply load balanced technology. This paper analyzes and explores the load balanced technology of VOD cluster server, and puts forward a self-adjusted genetic algorithm. The experimental results are perfect.
关键词：
Trend relational analysis;grey-fuzzy clustering method;grey systems;fuzzy systems
摘要：
In this paper, the latest researches on trend relational analysis and grey-fuzzy clustering method are presented. Grey systems and fuzzy systems are found everywhere. The researched results can open new prospects for the development and application of systems methodology to data mining.
期刊：
Dynamics of Continuous, Discrete and Impulsive Systems Series B: Applications and Algorithms,2006年13E:599-603 ISSN：1492-8760
通讯作者：
Shu, Wanneng
作者机构：
[Shu, Wanneng] Huazhong Normal Univ, Dept Comp Sci, Wuhan 430079, Peoples R China.;Wuhan Polytech Univ, Dept Elect Informat Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Shu, Wanneng] H;Huazhong Normal Univ, Dept Comp Sci, Wuhan 430079, Peoples R China.
摘要：
The complex resources and tasks in grid computing environment make it very difficult to validate the method of task scheduling. This paper proposes a task scheduling model for grid computing, designs and realizes a target genetic algorithm based on task scheduling. From the analysis and experiment result, it is concluded that this algorithm is superior to traditional algorithm and standard genetic algorithm.
摘要：
An environment is a very complex and large system. This paper describes it with the aid of the grey systems approach. Firstly, the grey system and grey process are outlined then the latest researches on grey prediction and control of environmental systems are presented. This kind of systems designed here is best suited for investigating the environmental objects with "poor" information.
摘要：
This article put forward a sample processing method using fuzzy clustering and studied the application of fuzzy competition classification method in extracting contradiction samples, then advanced the diagnosis method of neural network based on fuzzy clustering, finally carried on the simulation research. The calculation results show that all the above-mentioned methods are quite practical.
摘要：
A method is put forward to forecast the Metal Oxide Arrester's (MOA:s) state based on the recursive neural network. By compared with the real example, it is better than the usual BP algorithm. In order to realize the intellectual diagnosis and forecast of the MOA's state, we provide an effective method.
关键词：
coupling of magnetic and electric equations;permanent magnet axial-field brushless DC motor;phase belt moving model;varying network circuit
摘要：
Several approaches have been developed for a better simulation of disc type permanent magnet axial magnetic field brushless DC motor (AMF BLDCM). Combining transient electromagnetic field equation with varying network electric circuit equation, and taking into account of the effect of 3-D distribution of air gap magnetic field in disc type motor, an accurate mathematical model simulating the dynamic performances of BLDCM system of disc type is developed in this paper. The phase belt moving model dealing with the rotor movement in disc type motor is also built up. Finally, the method is applied to the analysis of a prototype motor, and the calculated results agree well with the experimented ones.
