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2009 IEEE International Conference on Automation and Logistics, ICAL 2009

作者： Wang, Dong Wu, Xiangbin Lin, Dongmei Department of Computer Science and Technology Foshan University Foshan Guangdong 528000 China College of Geosciences and Environmental Engineering Central South University Changsha Hunan 410083 China Center of Information and Education Technology Foshan University Foshan Guangdong 528000 China

ISBN: (纸本)9781424447954

Mixel decomposition of remote sensing images is one of valid assistance means for improving quality of feature extraction from the images. Some problems exist in normal linear mixels decomposition, for example, registration error is too large, and neighbourhood information can be took full advantage of and so on. These result in that distortion of new images generated after linear mixels decomposition is more serious. Aiming at an above-mentioned circumstance, particle swarm intelligence searching method is put forward in this paper. New algorithm implements mixel decomposition of remote sensing images, combined with linear mixels decomposition model. The algorithm takes full advantage of neighbourhood information, makes the decomposition result more human, and presents better robustness to environment. © 2009 IEEE.

关键词： Swarm intelligence

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An agent-based data access mechanism of mobile device

An agent-based data access mechanism of mobile device

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IEEE International Conference on Intelligent Computing and Intelligent Systems (ICIS)

作者： Xu-Huai Hu Jing-Cheng Ouyang Department of Computer and Information Engineering Huan Institute of Science and Technology Yueyang Hunan China Department of Computer and Information Engineering Hunan Institute of Science and Technology Yueyang Hunan China College of Computer and Communication Hunan University Changsha Hunan China

This paper proposes an agent-based data access mechanism of mobile device. In the mechanism, mobile device use agents to manage local database and connect to remote agent. Remote agent receives data and query remote database. The local database is designed using partial detailed concept. The partial detailed database can store different details of content for query to avoid unnecessary connection to reduce local memory space, data flow, and energy. The performance evaluation is conducted to demonstrate the effectiveness of the remote data access. An implementation of proposed mechanism also shows that the mechanism is suitable for the mobile computing environment.

关键词： File systems Mobile computing Databases Wireless networks Java Mobile communication Personal digital assistants Costs File servers Venus

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A new method of multi-sensor vibration signals data fusion based on correlation function

A new method of multi-sensor vibration signals data fusion b...

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2009 WRI World Congress on computer science and Information engineering, CSIE 2009

作者： Li, Xuejun Bin, Guangfu Dhillon, B.S. Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment Hunan University of Science and Technology Xiangtan 411201 China Department of Mechanical Engineering University of Ottawa 161 Louis Pasteur Ottawa ON K1B 6N5 Canada

ISBN: (纸本)9780769535074

In this paper to further enhance the measuring precision of vibration signal in the process of rotary machine fault diagnosis, a new data fusion method is presented on the basis of correlation function to determine the weighted value. The method doesn't require knowing the prior knowledge about sensors, and the weighted value of sensors can be determined on the basis of the correlation measure of real-time data tested in the fusion process. It gives greater weighted value to the greater correlation measure of sensor signals, and vice versa. Through simulation analysis, the dynamic adaptability, precision, and fault-tolerance of this method are better than the traditional weighted averaging method. Furthermore, this method has good performance of anti-jamming due to the correlation measures between noises and effective signals are usually small. Finally, rotor dynamics and integrated fault diagnosis system is taken as an example to verify the feasibility and advantages of this method with respect to multi-sensor vibration signal processing. © 2008 IEEE.

关键词： Fault tolerance

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Tuning of the Structure and Parameters of a Neural Network Using a Hybrid Good Point Set Evolutionary Strategy

Tuning of the Structure and Parameters of a Neural Network U...

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International Conference on Natural Computation (ICNC)

作者： Chixin Xiao Renren Liu Information Engineering College Xiangtan University Xiangtan Hunan China School of Information Science and Engineering Central South University Changsha China

ISBN: (纸本)9781424445424

In this paper, a hybrid good point set-evolutionary strategy is applied to solve the problem of tuning both network structure and parameters of a feedforward neural network. PSO frame can make the resulting evolutionary algorithm more robust and statically sound, especially for global optimization. Good Point Set can make the local search achieve the same sound results just as the state-of-the-art methods do, such as orthogonal method. But the precision of the algorithm is not confined by the dimension of the space. An integrated mechanism is used to enrich the exploration and exploitation abilities of the approach *** presented approach is effectively applied to solve the examples on forecasting the sunspot numbers.

关键词： Neural networks Switches Feedforward neural networks Evolutionary computation MIMO computer networks Educational institutions Information science Acoustical engineering Electronic mail

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Research and design of a node of wireless multimedia sensor network

Research and design of a node of wireless multimedia sensor ...

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5th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2009

作者： Tanghuai, Fan Lizhong, Xu Xuewu, Zhang Huibin, Wang Department of Computer Science Nanchang Institute of Technology NanChang JiangXi Province China Computer and Information Engineering College Hohai University NanJing JiangSu Province China

ISBN: (纸本)9781424436934

Recently, there has been a bursting demand to corporate multimedia content delivery over the Wireless Multimedia Sensor Networks (WMSNs). This feature could not only enhance several existing applications in the commercial, industrial, and medical domains, but also could spur an array of new applications. In this paper, firstly, establishing Node of Multimedia Sensor Network based on PXA270 32-bit Intel processor. By Embedded Linux operating system and Qtembedded graphics user interface is introduced in this platform. Driver program porting, system software porting, graphics user interface porting and the application program designing are also depicted in detail. Secondly, establish MWSNs experimental environment based on IEEE 802.11a/b standard for efficient communication among any node and server and among any node. Video continuous capturing, processing, transmitting and display can be realized through making use of TCP/IP and Userdefined protocol and adopting multithreading program technology. Experimental results show that we can accomplish above video continuous capturing, processing, transmitting and display at the speed of 10~15 Frames per second in the format of QCIF. ©2009 IEEE.

关键词： IEEE Standards

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A study of end-to-end video robust transmission via WMN

A study of end-to-end video robust transmission via WMN

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5th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2009

ISBN: (纸本)9781424436934

The Video Transmission over the multi-path fading wireless channel has to overcome the inherent vulnerability of compressed video to the channel errors. To effectively prevent the corruption of video stream and error propagation in spatial and temporal domain, proactive error controls are widely been deployed. In this paper, a novel video transmission architecture via WMNs is proposed to meet the error robust requirement of wireless video Transmission. This architecture address a strategy of jointing sources coding and channel coding based on H.264 video code standard. By taking the time-varying wireless channel condition and video codec characteristics into account, first, we present an end-to-end transport architecture for video streaming over Wireless mesh Network. Second, we estimate the time-varying Wireless network condition dynamically through estimate of throughout and RTT. Third, because H.264 is the most popular video coding standard for video communication, we use it as an experiment platform. A data partition scheme is also used to enhance error resilience performance. By Integrated strategies, we can improve the end-to-end quality of services. The simulation results show our strategies can significantly improve the robustness of wireless video transmission. ©2009 IEEE.

关键词： Codes (symbols)

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Interests-based Spyware Detection

Interests-based Spyware Detection

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2009 International Forum on computer science-technology and Applications(2009年国际计算机科学技术与应用论坛 IFCSTA 2009)

作者： Xiaoqiao Wang Juanjuan Chen Management Department Hunan University of Science and Technology Xiangtan 411201 China Department of Computer Engineering Naval University of Engineering Wuhan 430033 China

Spyware is a rapidly spreading security issue. Traditional spyware detection can mainly be classified into two categories: signature based detection and behavior based detection. The former is not able to detect unknown spyware and variants of known spyware. The latter fails when spyware attempts to blend in with legitimate behavior. This paper presents a novel spyware detection technique which is based on an abstract characterization of the interests of spyware programs. For sensitive and critical data, we monitor two kinds of actions which are general behaviors for spyware, copy-and-paste and transmission, performed by every program. Then with backward cloud generator we get the interests of every program. If the interests of one program are just the sensitive and critical data, we can tell the program is the spyware program. The experiment verifies the feasibility of our method.

关键词： spyware detection user interests cloud model safety

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Low Light Level Image De-Noising Algorism Based on Wavelet Transform and Morphology

Low Light Level Image De-Noising Algorism Based on Wavelet T...

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IEEE International Symposium on computer Network and Multimedia technology, CNMT

作者： Chaoliang Zhang Hanhong Jiang Chunliang Jiang Chan Hu Wu Yang Chongyuan Hou College of Electrical Engineering Naval University of Engineering Wuhan Hubei China Department of Computer Science and Technology Hunan Institute of Humanities Science and Technology Loudi Hunan China

A de-noising method using wavelet transform and morphology for low light level image is presented. The intensity of noise field is different from the intensity of normal image region, which has reduce the quality of vision and after works of image processing such as segmentation, feature extraction and identification. Since there are a number of noises in low light level image, this paper did some research of finding the source of noise that constitute the main problems and contrasted the existing noise reduction techniques, and then the method proposed makes the best of the multi-resolution characteristic of wavelet transform to process the specific part of image. Experiment indicates that this method can resolve noise reduction problem of reserving image detail and is effective on noise reduction and contrast enhancement in low light level image.

关键词： Image denoising Wavelet transforms Morphology Noise reduction Discrete wavelet transforms Filters Wavelet coefficients Optical noise Image processing Noise level

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Digital signature system based on digital stamp in supply chain

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Journal of Computational Information Systems 2009年第4期5卷 1305-1310页

作者： Sun, Wenfang Hao, Zhongxiao Qu, Xilong College of Logistics Southwest Jiaotong University Chengdu 610031 China School of Information Science and Electrical Engineering Hebei University of Engineering Handan 056038 China College of Computer and Communication Hunan Institute of Engineering Xiangtan 411104 China

The importance of digital signature in internet transaction security is expatiated, and the correlative technique of digital signature is introduced. The defaults of the technique of digital signature based on public key and private key pairs, and the approach of digital signature based on digital stamp is presented, and its rationality, effectivity and feasibility are reasoned. The process of design and implementation of digital signature system based on digital stamp are introduced, and the important source codes and running interfaces of real system are presented. © 2009 Binary Information Press August, 2009.

关键词： Supply chains

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Diagnosis for Fatigue Cracking in Concealment of Large-Scale Overloaded Supporting Shaft Based on Time Series and Fuzzy Clustering

Diagnosis for Fatigue Cracking in Concealment of Large-Scale...

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International Conference on Fuzzy Systems and Knowledge Discovery (FSKD)

作者： Xuejun Li Guangfu Bin Zhenyu Huang Balbir S. Dhillon Hunan Province Key Lab of Health Maintenance for Mechanical Equipment Hunan University of Science and Technology Xiangtan China Department of Mechanical Engineering University of Ottawa Ottawa Canada Department of Mechanical & Electronics Engineering Xiangtan Vocational and Technical College Xiangtan China

Fatigue cracking in concealment of large-scale overloaded supporting shaft often causes accident, breaks product line, and results in high loss for enterprises due to the unobserved and random characteristics. A novel approach is proposed to detect the fatigue cracking based on time series and fuzzy clustering. The vibration signal with structural state information can be collected from its pedestal position through analyzing the features of such fatigue cracking. The AR diagnosis model is established by using the time series method based on MATLAB procedure. The model parameters with integrated failure information are taken as feature values to form standard failure mode feature vectors space. The fuzzy clustering theory is applied to achieve the failure pattern recognition, and combined with the Euclidean distance discriminant function to match the candidate vector with maximal subjection degree among the standard vector space. Thus, the fatigue cracking of measuring supporting shaft can be diagnosed. In the end, the result of an example demonstrates that the proposed approach is effective and easy to implement.

关键词： Fatigue Large-scale systems Shafts Mathematical model Accidents Information analysis Signal analysis MATLAB Pattern recognition Euclidean distance

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