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2010 7th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2010

作者： Qin, Jing-Jing Zhang, Xian-Xia Cao, Gui-Tao Shanghai Key Laboratory of Power Station Automation Technology School of Mechatronics Engineering and Automation Shanghai University Shanghai 200072 China Software Engineering Institute East China Normal University Shanghai 200062 China

ISBN: (纸本)9781424459346

Three-dimensional fuzzy logic controller (3-D FLC) is a new FLC which was developed recently for spatially-distributed systems. In this paper, the scaling factor tuning of 3-D FLC is considered. The particle swarm optimization algorithm is used to adjust the scaling factors by using spatial performance criterion. A catalytic packed-bed reactor is presented as an example to demonstrate the effectiveness of the proposed method. The simulation results show that the system has a better performance by using proposed method. ©2010 IEEE.

关键词： Particle swarm optimization (PSO)

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Detecting immature precursor cells in pathological images of bone marrow based on morphology

Detecting immature precursor cells in pathological images of...

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2010 7th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2010

作者： Li, Ling Cao, Guitao Shi, Jun Wu, Heng Zhang, Xianxia Software Engineering Institute East China Normal University Shanghai 200062 China Sixth People's Hospital Shanghai Jiao Tong University Shanghai 200233 China Shanghai Key Laboratory of Power Station Automation Technology School of Mechatronics and Automation Shanghai University Shanghai 200072 China

ISBN: (纸本)9781424459346

It is an effective means for the early diagnosis of leukemia to study immature precursor cells in marrow pathological images by computer image processing technology. This paper proposed a new method about localization of immature precursor cells in Pathological images of bone marrow. Firstly, we use modified OSTU method to binarize the image;then we process the image with morphological operations, combined with their own characteristics and the sizes of cells;finally we obtain the right results of cellular localization. Experimental results show that the method proposed in this paper has a better performance on immature precursor cells identification, which addresses the problem unsolved in specific situation with general image segmentation methods. This lays a foundation for the future study in the area of distribution of cells. ©2010 IEEE.

关键词： Cells

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Improved methods for detecting main components of heart sounds

Improved methods for detecting main components of heart soun...

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2010 6th International Conference on Natural Computation, ICNC'10

作者： Tu, Zhihai Cao, Guitao Li, Qiao Zhang, Xianxia Shi, Jun Institute of Software Engineering East China Normal University Shanghai 200062 China Department of Biomedical Engineering School of Medicine Shandong University China Shanghai Key Laboratory of Power Station Automation Technology School of Mechatronics and Automation Shanghai University Shanghai 200072 China Shanghai Jiao Tong University Sixth People's Hospital Shanghai 200233 China

ISBN: (纸本)9781424459612

The heart is one of the key organs of human bodies and each component of heart sounds reflects important information about the cardiac status. In this paper, an improved method based on envelope for detecting them without reference signals was proposed. First of all, a novel de-noising method using thresholding function in wavelet domain was used to remove background noise and white noise. Secondly, original envelope was got according to Hilbert Transfer and then the final smooth envelope was extracted using Cubic polynomial interpolation. Thirdly, some strategies were taken to get the correct locations of main components of heart sounds in time domain, especially a new method based on window period for recovering lost peaks was discussed. The algorithm was tested by 223 records and the correct rate was 94.6%. ©2010 IEEE.

关键词： Heart

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The Listed Company's Credit Rating Based on Logistic Regression Model Add Non-financial Factors

The Listed Company's Credit Rating Based on Logistic Regress...

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International Conference on Modeling, Simulation and Visualization Methods (WMSVM)

作者： Yong Wei Shouxiang Xu Fanhua Meng Software Engineering Department Shenzhen Institute of Information Technology Shenzhen China Department of Economics and Management North China Electric Power University Baoding China

This paper designs a set of enterprise credit rating index system,in addition to traditional financial ratios, it joined the non-financial factors. then used the logical regression approach to create company's credit rating model, the result shows that the overall discrimination rate reached 95%, the models predict results accurately.

关键词： Companies Industries Biological system modeling Economics Indexes Predictive models Logistics

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Particle swarm optimization based scaling factor tuning for 3-D fuzzy logic controller

Particle swarm optimization based scaling factor tuning for ...

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International Conference on Fuzzy Systems and Knowledge Discovery (FSKD)

作者： Jing-jing Qin Xian-xia Zhang Gui-tao Cao Shanghai Key Laboratory of Power Automation Technology School of Mechatronical Engineering & Automation Shanghai University Shanghai China Software Engineering Institute East China Jiao Tong University Shanghai China

关键词： Sensors Tuning Inductors Particle swarm optimization Fuzzy logic Steady-state Artificial neural networks

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A Fault Section Detection Method using ZCT when a Single Phase to Ground Fault in Ungrounded Distribution System

A Fault Section Detection Method using ZCT when a Single Pha...

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IEEE PES Transmission and Distribution Conference and Exposition

作者： I. H. Lim H. T. Lim M. S. Choi S. J. Lee D. Bak T. W. Kim Next-generation Power Technology Center Department of Electrical Engineering and Computer Software Engineering Myongji University KDN

ISBN: (纸本)9781424465460

A single line to ground fault (SLG) detection in ungrounded network is very difficult, because fault current magnitude is very small. It is generated by a charging current between distribution line and ground. As it is very small, is not used for fault detection in case of SLG. So, SLG has normally been detected by switching sequence method which makes customers experience blackouts. A new fault detection algorithm based on comparison of zero-sequence current and line-to-line voltage phases is proposed. The algorithm uses ZCT installed to ungrounded distribution network. The proposed in this paper algorithm has the advantage that it can detect fault phase and distinguish a faulted section as well. The simulation tests of proposed algorithm were performed using Matlab Simulink and the results are presented in the paper.

关键词： Distribution automation Distribution network fault indicator ZCT Zero sequence current

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Detecting immature precursor cells in pathological images of bone marrow based on morphology

Detecting immature precursor cells in pathological images of...

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International Conference on Fuzzy Systems and Knowledge Discovery (FSKD)

作者： Ling Li Guitao Cao Jun Shi Heng Wu Xianxia Zhang Software Engineering Institute East China Jiao Tong University Shanghai China Sixth People's Hospital Shanghai Jiaotong University Shanghai China Shanghai Key Laboratory of Power Automation Technology School of Mechatronical Engineering & Automation Shanghai University Shanghai China

It is an effective means for the early diagnosis of leukemia to study immature precursor cells in marrow pathological images by computer image processing technology. This paper proposed a new method about localization of immature precursor cells in Pathological images of bone marrow. Firstly, we use modified OSTU method to binarize the image; then we process the image with morphological operations, combined with their own characteristics and the sizes of cells; finally we obtain the right results of cellular localization. Experimental results show that the method proposed in this paper has a better performance on immature precursor cells identification, which addresses the problem unsolved in specific situation with general image segmentation methods. This lays a foundation for the future study in the area of distribution of cells.

关键词： Pathology Image segmentation Image edge detection Morphology Bones Pixel Optimization

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Improved methods for detecting main components of heart sounds

Improved methods for detecting main components of heart soun...

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International Conference on Natural Computation (ICNC)

作者： Zhihai Tu Guitao Cao Qiao Li Xianxia Zhang Jun Shi Institute of Software Engineering East China Jiao Tong University Shanghai China Department of Biomedical Engineering School of Medicine Shandong University China Shanghai Key Laboratory of Power Station Automation Technology School of Mechatronics and Automation Shanghai University Shanghai China The Sixth People's Hospital Shanghai Jiaotong University Shanghai China

关键词： Heart Feature extraction Noise Noise reduction Biomedical engineering Wavelet domain Real time systems

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Performance analysis of a class of networked control systems under data rate constraints

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Journal of Shanghai University(English Edition) 2009年第5期13卷 356-358页

作者：李力雄费敏锐丁瑾 Shanghai Key Laboratory of Power Station Automation Technology School of Mechatronics Engineering and AutomationShanghai University Software Development Center ICBC

In networked control system (NCS) where control loop is closed over communication network, limited data rate may deteriorate control performance even destabilize the control system. In this paper, performance analysis of a typical second-order control system with data rate constraints is conducted, and the concept of critical data rate (CDR) is presented. In order to find the CDR in NCS, an approximate searching method is proposed to guarantee acceptable control performance.

关键词： networked control system (NCS) data rate network-induced delay performance of control

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Applying security algorithms against cyber attacks in the distribution automation system

Applying security algorithms against cyber attacks in the di...

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Transmission and Distribution Exposition Conference: 2008 IEEE PES powering Toward the Future, PIMS 2008

作者： Lim, Il Hyung Hong, Sug Won Choi, Myeon-Song Lee, Seung-Jae Lee, Sung Woo Ha, Bok Nam Power Technology Center Department of Electrical Engineering and Computer Software Engineering Myongji University Yongin 449-728 Korea Republic of KEPRI Daejeon Korea Republic of

ISBN: (纸本)9781424419036

As the communication technology weighs heavily in the power system, so the security issues becomes major concerns. So far most security research has focused on the SCADA system. In this paper we consider the security problems in the network environment of the distribution automation system (DAS) which is much different from the SCADA system. First we analyze the types of cyber threats in many applications of the distribution system, and formulate the security goals. Then we propose the efficient security algorithms to achieve these goals. The algorithm avoids complex computation of any encryption algorithm, considering the resource-constraint network nodes. We also propose the efficient secret key distribution algorithm without resort to the public key encryption. Finally we demonstrate the feasibility of the proposed security protocol by experiment. ©2008 IEEE.

关键词： Network security

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