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Journal of Software 2009年第8期4卷 899-906页

作者： Zhang, Shu-Kui Gong, Sheng-Rong Cui, Zhi-Ming Liu, Quan Fan, Jian-Xi School of Computer Science and Technology Soochow University Suzhou 215006 China JiangSu Province Support Software Engineering R and D Center Modern Information Technology Application in Enterprise Suzhou 215104 China

Collecting data with confidence of the environment is an important application of the wireless sensor networks (WSN). In this study, we used a splay tree based event region fault-tolerant detection algorithm (STERD) for WSNs to address these problems. Rather than passing large quantities of raw data through the network, our network instead sends the coefficients of a regression polynomial that simulates the readings of the sensor nodes throughout the region of interest. These coefficients essentially summarize the relevant information over the region, in effect compressing the data, leading to a reduction in both data volume and energy expenditure. Simulation results indicate that the proposed STERD can attractively obtain the high event region detection accuracy and considerably reduce the false alarm probability. © 2009 ACADEMY PUBLISHER.

关键词： Sensor nodes

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Novel colored pulse laser photography for high speed imaging

Novel colored pulse laser photography for high speed imaging

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IEEE International Conference on Nano/Molecular Medicine and engineering (NANOMED)

作者： Chien-Sheng Liu Cheng-Hsien Lin Chia-Hsu Chen Po-Heng Lin Chung-I Huang Cheung-Wen Chang Chih-Hsun Lin Yung-Nien Sun Laser Application Technology Center Industrial Technology and Research Institute Tainan Taiwan Department of Computer Science and Information Engineering National Cheng Kung University Tainan Taiwan

In order to improve the imaging quality of conventional laser photography, this study proposes a new system for colored pulse laser photography to obtain high speed color microscopic imaging. Based on the RGB synthesis technique, three channels of red, green, and blue images are acquired from three cameras with three independent laser light sources. Then, a high quality color image can be obtained by assembling the monochromatic images with the image realignment and color calibration processes. The experimental results show that the proposed system can achieve a high quality colored pulse photography.

关键词： Equations

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N-order difference heuristic model of fuzzy time series forecasting

N-order difference heuristic model of fuzzy time series fore...

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

作者： Kai Chi Wen-Gang Che Pattern Recognition and Intelligent System School of Information Engineering and Automation Kunming University of Science and Technology China Key Laboratory of Computer Technology and Application of Yunnan Province Kunming University of Science and Technology China

Fuzzy time series forecasting model is an effective method to solve the nonlinear problems forecasting. However, most published fuzzy time series based models did not count the change trend implicit in historical datum. In this paper, authors proposed a novel method which applied heuristic information to the fuzzy time series model based on Fibonacci sequence. As an example, the USD/JPY exchange rate is tested in this model. The results show that this method not only improves the forecasting accuracy, but decreases the computational complexity.

关键词： Predictive models Technology forecasting Economic forecasting Uncertainty Fuzzy systems Pattern recognition Intelligent systems Automation Channel hot electron injection Laboratories

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A fuzzy auto-tuning PID temperature controller

A fuzzy auto-tuning PID temperature controller

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IEEE International Symposium on Information (IT) in Medicine and Education, ITME

作者： Li-xia Jing Cheng Zhao Department of Computer Science and Application Zhengzhou Institute of Aeronautical Industry Management Zhengzhou China Department of Electronic and Communication Engineering Zhengzhou Institute of Aeronautical Industry Management Zhengzhou China

In order to control systems that contain nonlinearities or uncertainties, control strategies must deal with the effects of these. Since most control methods based on mathematical models have been mainly focused on stability robustness against nonlinearities or uncertainties, they are limited in their ability to improve the transient responses. In this paper, a nonlinear fuzzy auto-tuning PID control method is built, which can stably improve the transient responses of systems disturbed by nonlinearities or unknown mathematical characteristics. Although the derivation of the control law is based on the design procedure for general fuzzy logic controllers, the resultant control algorithm has analytical form with time varying PID gains rather than linguistic form. This means the proposed method can be easily and effectively applied to real-time control situations. It will be implemented by using an ARM processor LPC2210 from Philips. Control simulations are carried out to evaluate the transient performance of the suggested method through example systems, by comparing its responses with the nonlinear fuzzy PID control method.

关键词： Fuzzy control Three-term control Temperature control Nonlinear control systems Control nonlinearities Control systems Uncertainty Robust stability Fuzzy systems Algorithm design and analysis

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Access point evaluation using packet transfer ratio in multihop wireless networks

Access point evaluation using packet transfer ratio in multi...

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International Conference on Information Networking

作者： Daiki Nobayashi Yutaka Nakamura Takeshi Ikenaga Yoshiaki Hori Katsuichi Nakamura Hiroshi Ishinishi Syuuji Kaizaki Department of Electrical Electronic and Computer Engineering Kyushu Institute of Technology Fukuoka Japan Information Science Center Kyushu Institute of Technology Fukuoka Japan Department of Computer Science and Communication Engineering Kyushu University Fukuoka Japan Network Application Engineering Laboratories Limited Fukuoka Japan Kyushu Electric Power Company Inc. Fukuoka Japan

ISBN: (纸本)9781424445264

In a multihop wireless network (MWN), access points (APs) in an MWN should provide high reliability to improve network availability. However, APs do not always work well. An AP may stop functioning due to a power outage or may malfunction for various reasons, including malicious attacks. To maintain MWN availability, the network should work autonomously to treat unreliable APs appropriately. In this paper, we propose an AP evaluation system in which each AP attempts to evaluate neighboring APs in collaboration with other APs that are neighbors of the target. Furthermore, each AP exchanges its evaluation result with other APs and attempts to use the result to control the MWN. We evaluate our proposed scheme using simulations to confirm its effectiveness.

关键词： Spread spectrum communication Wireless networks Collaboration Power engineering and energy Monitoring Availability Network servers computer networks Power engineering computing computer science

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Efficient importance-based MAC scheduling for video streaming in Bluetooth Piconet

Efficient importance-based MAC scheduling for video streamin...

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International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery, CyberC

作者： Jianfeng Liu Guoping Liu Jinfeng Zhang Shaohua Qin Yong Du Huihua Jin School of Computer Science Beijing Aeronautics and Astronautics University Beijing China Business Application & Product Research Department China Telecom Beijing Research Institute Beijing China School of Computer Science and Information Engineering Guangxi Normal University Guilin China Beijing Transportation Information Center Beijing China

In order to provide the high quality service for transporting video streaming in the Bluetooth Piconet, in which the bandwidth is limited and the structure is heterogeneous, a MAC scheduling algorithm for video streaming in the Bluetooth Piconet is proposed. The main idea of the algorithm is to model the video streaming and calculate the importance of the packet relative to the video quality before transporting. The packet on the transportation is scheduled by the importance in the MAC layer to attain the maximum perceived quality of the overall Slaves in the Piconet. The simulation shows that the proposed algorithm can assign the network resource more efficiently, and improve the perceived video quality of the Slaves in the Piconet more significantly in contrast with the other algorithms.

关键词： Streaming media Bluetooth Personal area networks Master-slave Traffic control computer science Transportation Bandwidth Ad hoc networks Round robin

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Research on the method of entity homepage recognition

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Journal of Computational Information Systems 2009年第6期5卷 1617-1624页

作者： Li, Lina Yu, Zhengtao Zou, Junjie Su, Lei Xian, Yantuan Mao, Cunli The School of Information Engineering and Automation Kunming University of Science and Technology Kunming 650051 China The Institute of Intelligent Information Processing Computer Technology Application Key Laboratory of Yunnan Province Kunming 650051 China School of Software Yunnan University Kunming 650091 China

Entity Homepage Recognition(EHR) is an important part of entity finding. In this paper, a method of EHR based on AdaBoost is proposed. With the help of Google, this method recalls pages related to answer entities and recognizes to obtain the relevant entity homepage. In detail, Person, Organization and Product, three types of entities are analyzed respectively and 3148 entities and the corresponding entity homepages are collected, besides, on the basis of entity characteristic, we define the entity features related to the features of link and webpage content, as well as, these features are extracted to form a training data set;And then using different learning algorithms with different features to identify the homepage to find the most effective classification features and homepage recognition learning algorithm. Experiments were done by employing the test data set of entity task in TREC-2009 and the method of 10-fold cross validation, the results show the best effects have been achieved by adopting the method of AdaBoost, specifically, combined with the features of link and webpage content, the recognition accuracy rate for right homepage reaches 91.34%. 1553-9105/ Copyright © 2009 Binary Information Press.

关键词： Adaptive boosting

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Analysis of Hierarchical Mobile IP Based Fast Mobility Management Schemes

Analysis of Hierarchical Mobile IP Based Fast Mobility Manag...

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International Conference on Networks and Communications (NETCOM)

作者： Sajal Saha Subhasree Bhattacharjee Rajib Nath Bhowmick Asish K. Mukhupadhyay Dhinaharan Nagamalai Department of Computer Application Narula Institute of Technology Kolkata India Department of CSE Institute of Science and Technology Paschim Medinipur India Department of CSE Dr. B. C. Roy Engineering College Durgapur India Wireilla Net Solutions Inc. India

Mobility management in the wireless domain is a challenging issue for the next generation networks. Frequent change of network requires a new IP address to route packets from one host to another. It is done by sending the mobile node (MN) binding update to the Home Agent (HA) when the Care of address (CoA) gets changed. This registration requires large number of location updates, excessive signaling overhead and service delay. This problem is solved by Hierarchical Mobile IP (HMIP) protocol using the concept of hierarchy of Foreign Agent and the Gateway Foreign Agent /Mobility Anchor point to localize the registration information. This article presents an overview of set of HMIP based mobility protocols such as HMIP, PHMIP, RHMIP, DHMIP, FFHMIP, MIFA etc. that will play an important role in IP based mobility management. We analyze the advantages and disadvantages of theses protocols in the context of handoff latency and signaling overhead. Further, we propose a network model by removing the binding update with HA and simulate its performance in OPNET simulator. The simulation results show that our proposed mechanism achieve better performance than other protocols.

关键词： Mobile radio mobility management Protocols Delay Robustness computer applications Costs Scalability Authentication Mobile communication Mobile computing

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Integrated two Hopfield neural networks for automatic LED defect inspection

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Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao 2008年第1期29卷 45-51页

作者： Chang, Chuan-Yu Chang, Chuan-Wang Lin, Si-Yan Jeng, Mu-Der Department of Computer and Communication Engineering National Yunlin University of Science and Technology Douliou Yunlin Taiwan Department of Computer Application Engineering Far East University Tainan Taiwan Institute of Computer Science and Information Engineering National Yunlin University of Science and Technology Yunlin Taiwan Department of Electrical Engineering National Taiwan Ocean University Keelung Taiwan

The aim of the wafer defect inspection is to detect defective dies and discard them. The defective dies were usually identified through visual judgment with the aid of a scanning electron microscope. Dozens of engineers visually check wafers and hand-mark the defective regions leading to a significant amount of personnel cost. In this paper, a complete solution which consists of two Hopfield neural networks is proposed to detect the defective dies of wafer image. The experimental results show the proposed method successfully identifies the defective dies on LED wafers images with good performances.

关键词： Hopfield neural networks

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Fast-integer optimization for WMA compatible decoder on embedded system without FPU

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Tamkang Journal of science and engineering 2008年第4期11卷 375-386页

作者： Hwang, Lain-Jinn Shih, Chien-Chou Wei-Chen Kuo, I.-Ting Department of Computer Science and Information Engineering Tamkang University Tamshui 251 Taiwan Department of Information and Communication Tamkang University Tamshui 251 Taiwan Department of Computer Science and Application Asia University Taichung 413 Taiwan

This paper presents a general software optimization technique which enables an embedded system to play Windows Media Audio (WMA) fluently without the support of floating point unit (FPU). We employ fixed-point arithmetic operations, instead of floating-point, to optimize the computational overhead during the audio decoding process. Thus the proposed performance improvements by programming in C language are useful for the implementation of the real-time WMA compatible decoder on ARM920T based embedded system. This work achieved performance increase by reducing the CPU usage rate from 100% to 45% with great precision on the average around 1-bit error.

关键词： Embedded systems

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