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A new measure to characterize multifractality of sleep electroencephalogram

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Science Bulletin 2006年第24期51卷 3059-3064页

作者： MA Qianli1,2,NING Xinbao1,WANG Jun2 & BIAN Chunhua1 1. State Key Laboratory of Modern Acoustics,Department of electronics Science and engineering,Institute for Biomedical electronic Engi-neering,Nanjing {3.,Nanjing 210093.china 2. Province Key Laboratory of Image Processing & Image Communica-tion,college of Telecommunications and information engineering,Nanjing {3. of Posts & Telecommunications,Nanjing 210003.china State Key Laboratory of Modern Acoustics Department of Electronics Science and Engineering Institute for Biomedical Electronic Engineering Nanjing University Nanjing 210093 China Province Key Laboratory of Image Processing & Image Communication College of Telecommunications and Information Engineering Nanjing University of Posts & Telecommunications Nanjing 210003 China

Traditional methods for nonlinear dy-namic analysis,such as correlation dimension,Lyapunov exponent,approximate entropy,detrended fluctuation analysis,using a single parameter,cannot fully describe the extremely sophisticated behavior of electroencephalogram (EEG). The multifractal for-malism reveals more “hidden” information of EEG by using singularity spectrum to characterize its nonlin-ear dynamics. In this paper,the zero-crossing time intervals of sleep EEG were studied using multifractal analysis. A new multifractal measure Δasα was pro-posed to describe the asymmetry of singularity spec-trum,and compared with the singularity strength range Δα that was normally used as a degree indi-cator of multifractality. One-way analysis of variance and multiple comparison tests showed that the new measure we proposed gave better discrimination of sleep stages,especially in the discrimination be-tween sleep and awake,and between sleep stages 3.and 4.

关键词： sleep electroencephalogram multifractality.

Adsorption and adhesion of blood proteins and fibroblasts on multi-wall carbon nanotubes

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Science china(Life Sciences) 2009年第5期52卷 479-482页

作者： LI DeJun1, YUAN Li1, YANG Ying1, DENG XiangYun1, Lü XiaoYing2, HUANG Yan2, CAO Zheng2, LIU Hao3.& SUN XueLiang3.1 college of Physics and electronic information Science, Tianjin Normal {3., Tianjin 3.0074, china 2 State Key Laboratory of Bioelectronics, Southeast {3., Nanjing 210096, china 3.Department of Mechanical & Materials engineering, {3. of Western Ontario, London, ON, Canada college of Physics and electronic information Science Tianjin Normal University Tianjin 300074 China State Key Laboratory of Bioelectronics Southeast University Nanjing 210096 China Department of Mechanical & Materials engineering University of Western Ontario London ON Canada

This article concerns the investigation of blood protein adsorption on carbon paper and multi-wall carbon nanotubes (MWCNTs). Mouse fibroblast cell adhesion and growth on MWCNTs was also studied. The results showed that fibrinogen adsorption on carbon paper was much lower than that on MWCNTs, which means that platelets readily aggregate on the surface of MWCNTs. Mouse fibroblast cells implanted on MWCNTs tended to grow more prolifically than those implanted on carbon paper. The cell concentration observed on MWCNTs increased from 1.2×105/mL for a single day culture to 2×105/mL for a 7-day culture. No toxicity reaction was observed during the culturing period. These results indicated that MWCNTs possessed excellent tissue compatibility.

关键词： multi-wall carbon nanotubes cell adhesion protein adsorption toxicity tissue compatibility

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Study on Design of Magnetic Flux Leakage Testing Instrument for gun

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微计算机信息 2005年第6期 115-116+82页

作者： Wang,Changlong Fu,Junmei(Institute of electronic and information, Xi’an Jiaotong university)Yingwei Xu,Zhangsui(Ordnance {3. college, Shijiazhuang 050003. china)Wang,Changlong Jin,

The paper describes the magnetic Dipole model of magnetic flux leakage(MFL) based on the principle of MFL testing, proposes the effects of surface defect width and depth on MFL field, and presents the peak-peak amplitude algorithm that the features of defect signal are extracted. The peak-peak amplitude and separation, signal gradient variation are used as the distinguish criterions of defects. The principle of instrumental hardware design is also introduced. The introduced gun MFL testing instrument is successfully employed in the nondestructive evaluation of gun.

关键词： magnetic flux leakage defect nondestructive evaluation peak-peak amplitude algorithm hardware design

Design of a Two layer Scalable Wavelength Routing Optical Interconnection Network

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Chinese Journal of Lasers 1999年第6期8卷 3-5页

作者： JING Wencai ZHOU Ge ZHANG Yimo LIU Wei TIAN Jindong (college of Precision Instrument & Opto electronics engineering, Tianjin {3., Opto electronic information Science and technology Lab., Tianjin 3.0072, china) 天津大学精密仪器与光电子工程学院光电信息技术科学开放实验室天津 300072 天津大学精密仪器与光电子工程学院光电信息技术科学开放实验室天津

In this paper, a two layer scalable wavelength routing optical interconnection network is presented. The top layer of the network is a multi wavelength bi directional optical bus which has high bandwidth and low latency; the sub layer of the network is single wavelength synchronous pipelined ring which has low communication latency and high scalability. The way to implement the optical system of the network is put forward, and the synchronous pipelined optical interconnect ring is designed and implemented.

关键词： wavelength routing optical interconnection network optical bus communication latency scalability

Improving Anti-interception Performance of Differential Frequency Hopping Communication

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Improving Anti-interception Performance of Differential Freq...

2008 International Seminar on Future BioMedical information engineering(FBIE 2008)

作者： Qu Xiaoxu Lou Jingyi and Li An Department of electronic and information Huazhong university of Science and {3. Wuhan china 43.03. college of electronic engineering Naval university of engineering Wuhan china 43.03.

Differential frequency hopping （DFH） is believed to have great potential in increasing the data rate of shortwave *** studies show that DFH suffers from an inherent serious drawback that its frequency transition matrix may be intercepted by any third-party *** would heavily damage the anti-jamming performance of *** root of this drawback is that differential frequency hopping sequence is not PN sequence but Markov *** invariant correlation between successive hops makes in-terception possible by statistically analyzing the intercepted DFH *** this paper,we put forward a novel method named FH-DFH to deal with this *** basic idea of our method is to eliminate correlation between successive frequency hops by combining DFH with conventional FH *** and simulation results show that DFH system using our method exhibits better anti-interception performance than not only normal DFH system but also oTVG-DFH system.

关键词：

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组合导航系统的模糊信息融合

系统仿真学报 2005年第1期17卷 124-128页

作者：许丽佳陈阳舟崔平远四川农业大学信息技术学院四川雅安625000 北京工业大学电子信息与控制工程学院北京100022

为了解决联合卡尔曼滤波法存在的不足,文中给出了用模糊推理系统与卡尔曼法相结合的方法,该方法可以在线对噪声统计特性进行修改。它不仅可以对子滤波器进行自适应,而且对主滤波器的融合方式提出了全新的信息融合算法,构造一个模糊推理... 详细信息

为了解决联合卡尔曼滤波法存在的不足,文中给出了用模糊推理系统与卡尔曼法相结合的方法,该方法可以在线对噪声统计特性进行修改。它不仅可以对子滤波器进行自适应,而且对主滤波器的融合方式提出了全新的信息融合算法,构造一个模糊推理系统,根据实际情况由该系统得到各子滤波器的各状态估计量的不同信任权值,实时地进行加权融合,既避免了传统联合卡尔曼法的复杂计算,又提高了融合精度。最后把此法用于INS/GPS组合导航系统中,仿真结果证明该方法是有效的,实用的。

关键词：信息融合组合导航模糊推理系统联合卡尔曼滤波

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LOW PROFILE MEANDER LINE PRINTED QUADRIFILAR HELIX ANTENNA

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Journal of electronics(china) 2011年第1期28卷 53-57页

作者： Yang Zenghui Cao Qunshen Chen Zhenhua Avicopter Co. Ltd Jia5-19 Shuguangxili Chaoyang District Beijing 100028 China college of electronic and information {3. Nanjing University of Aeronautics and Astronautics Nanjing 210016 China Department of information Science and technology Southeast University Nanjing 211189 China

In this paper,a new approach of meander line technique for Printed Quadrifilar Helix Antenna(PQHA) is *** with other meander line techniques,this approach has lowered the axial height of antenna greatly and improved the efficiency of model-building in simulation *** have focused on the analysis of radiation pattern,axial ratio,and design graph for the Meander line Printed Quadrifilar Helix Antenna(MPQHA).Finally,we have reduced successfully 67% size in geometry compared with traditional PQHA method,and obtained rather reasonable results.

关键词： Antenna Meander line Size reduction Quadrifilar Helix Antenna(QHA)

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Research on Embedded Digital Image Recognition System Based on ARM-DSP

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Research on Embedded Digital Image Recognition System Based ...

2009 2nd IEEE International Conference on Computer Science and information technology（ICCSIT 2009）

作者： ZHOU JIANJUN ZHOU JIANHONG Department of Microelectronics technology Chengdu college {3. of electronic Science and technology of china Department of electronics information engineering Jincheng college Sichuan {3. Chengdu china

Embedded image acquisition,processing and transmission systems have advantages of small volume and high stability,etc,and therefore they are widely used in intelligent transportation,electric power,communication and computer vision,*** with the development of DSP technology,realizing real-time video compression on DSP by software has become a highlight of digital video compression standard application and this kind of application has greater flexibility and upgrading potential than special compression *** continuous development of modern industrial technology has put forward higher requirements for the acquisition,processing and transmission of image *** recent years,high-speed digital signal processing DSP technology develops rapidly and the strong signal processing ability of DSP has provided solid theoretical and application foundation for the real-time processing of image ***,this paper discusses the hardware structure of image tracking system taking ARM-DSP as main frame and the development process and control flow of ***,it looks forward to the development prospect of image *** paper studies basic theories of digital image processing.

关键词： DSP ARM embedded image processing digital recognition

H∞ Control for Uncertain Discrete Fuzzy System with Both State and Input Delays

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H∞ Control for Uncertain Discrete Fuzzy System with Both St...

第二十七届中国控制会议

作者： Pan Juntao1,Wang Renming1,Tian Dong2 1.college of Electrical engineering and information {3.,china three gorges university,yichang 443.02,P.R.china 2.Wuhan university of Science and {3.,Wuhan 43.081,P.R.china

In this paper,a new approach to H controller design for a class of uncertain discrete T-S fuzzy systems are proposed. According to the Lyapunov stability theory as well as parallel distributed compensation(PDC) ,several sufficient conditions for stabilization of considered systems are *** design procedure based on LMI for the fuzzy robust controller is given,which guarantee the closed-loop system is asymptotically stable and the effect of disturbance input on the controlled output is reduced to a prescribed *** simulation results show the proposed method is effective.

关键词： H∞ control T-S fuzzy systems Time-delays Uncertain