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2012 International Conference on measurement, Information and control, MIC 2012

作者： Wang, Yingli Zhao, Xueli Wang, Ming Measurement and Control Technology and Communication Engineering Harbin University of Science and Technology Harbin China

ISBN: (纸本)9781457716027

This article mainly is the top-hat algorithm which is applied to medical image to gray image processing, according to different image, take different gray value, in order to achieve the different disease case image processing. Top-hat algorithm by changing in the gray scale value, enhances the different medical image of the contrast of gray scale images, which can be more accurately prominent oral required on site. Using top-hat algorithm for image processing more accurately, obviously and more conducive to the medicine to the diagnosis of oral disease. © 2012 IEEE.

关键词： Image enhancement

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H_∞ consensus control of a class of second-order multi-agent systems without relative velocity measurement

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Chinese Physics B 2010年第7期19卷 188-192页

作者：张文广曾德良郭振凯 Beijing Key Laboratory of Measurement and Control New Technology and System for Industrial Process Control & Computer Engineering SchoolNorth China Electric Power University School of Mathematics and Information Ludong University

This paper studies consensus control problems for a class of second-order multi-agent systems without relative velocity measurement. Some dynamic neighbour-based rules are adopted for the agents in the presence of external disturbances. A sufficient condition is derived to make all agents achieve consensus while satisfying desired H∞ performance. Finally, numerical simulations are provided to show the effectiveness of our theoretical results.

关键词： consensus control H∞ second-order multi-agent systems

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Signal design for MIMO dual-function systems with permutation learning

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Science China(Information Sciences) 2023年第10期66卷 297-315页

作者： Jing YANG Xianxiang YU Minghui SHA Wen FAN Guolong CUI School of Electrical and Information Engineering Zhengzhou University School of Information and Communication Engineering University of Electronic Science and Technology of China Beijing Institute of Radio Measurement The 54th Research Institute of China Electronics Technology Group Corporation

This paper addresses the signal matrix synthesis in the multi-input-multi-output(MIMO) dualfunction system aimed at obtaining the desired radar beampattern while embedding communication symbols into the permutation matrix of each pulse. To this end, transmit beampattern peak mainlobe to sidelobe level ratio(PMSR) is considered the figure of merit. Besides, the phases of the codebook induced by the designed weight vectors impinged on the directions of the communication receivers and eavesdroppers are restricted to be uniformly distributed and totally the same, respectively. To handle the resulting design problem, an iterative algorithm is devised to account for the coupled quadratic fractional programming objective function with multi-equality constraints, capitalizing on the alternating direction method of multipliers(ADMM) framework. As to the demodulation process for permutation learning, a novel algorithm based on the alternating direction penalty method(ADPM) framework is proposed to handle the mix-boolean optimization problem with the correlation between the communication dictionary and permutation of the received filtered data maximized. Finally, numerical results highlight the effectiveness of the conceived algorithms in comparison with the existing counterparts.

关键词： dual function radar and communication (DFRC) system multi-input multi-output (MIMO) radar beampattern alternating direction method of multipliers (ADMM) permutation learning mix-boolean optimization problem alternating direction penalty method (ADPM)

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Identification of lactobacillus casei-BDI and Streptococcus thermophilus by fluorescence spectra

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Chinese Optics Letters 2009年第6期7卷 542-544页

作者：武浩朱拓陈卫张灏杨建磊 School of Science Jiangnan University State Key Laboratory of Food Science and Technology School of Food Science and TechnologyJiangnan University School of Communication and Control Engineering Jiangnan University

Fluorescence analysis applied in the study of lactic acid bacteria （LAB） provides a new method and theory to study probiotics and realize the detection and identification of the strains. It is also possible to achieve automation and computerization. In this letter, the differences between the fluorescence spectra of lactobacilIus casei-BDI （Lc-BDI） and Streptococcus thermophilus （St） are shown, and the second-order derivative spectra are used to further study the diversity of these two strains. According to the results, with the excitation wavelengths of 285 and 340 nm, there are significant differences between them. The experiment is repeated for 6 times, showing good repetitiveness.

关键词： Lactic acid Organic acids

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An abundance estimation algorithm based on orthogonal bases for hyperspectral image

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Optoelectronics Letters 2019年第5期15卷 396-400页

作者： ZHAO Yan ZHOU Zhen WANG Dong-hui School of Measurement and Communication Engineering Harbin University of Science and Technology Harbin 150080 China College of Information and Communication Engineering Harbin Engineering University Harbin 150001 China

An abundance estimation algorithm based on orthogonal bases is proposed to address the problem of high computational complexity faced by most abundance estimation algorithms that are based on a linear spectral mixing model(LSMM) and need to perform determinant operations and matrix inversion operations. The proposed algorithm uses the Gram-Schmidt method to calculate the endmember vector set to obtain the corresponding orthogonal basis set and solve the unmixing equations to obtain the eigenvector of each endmember. The spectral vector to be decomposed is projected onto the eigenvector to obtain projection vector, and the ratio between the length of the projection vector and the length of the orthogonal basis corresponding endmember is calculated to obtain an abundance estimation of the endmember. After a comparative analysis of different algorithms, it is concluded that the proposed algorithm only needs to perform vector inner product operations, thereby significantly reducing the computational complexity. The effectiveness of the algorithm was verified by experiments using simulation data and actual image data.

关键词： linear spectral mixing model(LSMM) perform determinant operations matrix inversion operations

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Intelligent rehabilitation in an aging population: empowering human-machine interaction for hand function rehabilitation through 3D deep learning and point cloud

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Frontiers in Computational Neuroscience 2025年 19卷 1543643页

作者： Xing, Zhizhong Meng, Zhijun Zheng, Gengfeng Ma, Guolan Yang, Lin Guo, Xiaojun Tan, Li Jiang, Yuanqiu Wu, Huidong School of Rehabilitation Kunming Medical University Kunming China Medical Imaging Key Laboratory of Sichuan Province North Sichuan Medical College Nanchong China Fujian Key Laboratory of Special Intelligent Equipment Safety Measurement and Control Fujian Special Equipment Inspection and Research Institute Fuzhou China School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products Kunming Medical University Kunming China School of Mechanical Engineering Xi'an Jiaotong University Xi'an China Xi'an Aerospace Automation Co. Ltd Xi'an China School of Mechanical and Automotive Engineering South China University of Technology Guangzhou China

Human-machine interaction and computational neuroscience have brought unprecedented application prospects to the field of medical rehabilitation, especially for the elderly population, where the decline and recovery of hand function have become a significant concern. Responding to the special needs under the context of normalized epidemic prevention and control and the aging trend of the population, this research proposes a method based on a 3D deep learning model to process laser sensor point cloud data, aiming to achieve non-contact gesture surface feature analysis for application in the field of intelligent rehabilitation of human-machine interaction hand functions. By integrating key technologies such as the collection of hand surface point clouds, local feature extraction, and abstraction and enhancement of dimensional information, this research has constructed an accurate gesture surface feature analysis system. In terms of experimental results, this research validated the superior performance of the proposed model in recognizing hand surface point clouds, with an average accuracy of 88.72%. The research findings are of significant importance for promoting the development of non-contact intelligent rehabilitation technology for hand functions and enhancing the safe and comfortable interaction methods for the elderly and rehabilitation patients. Copyright © 2025 Xing, Meng, Zheng, Ma, Yang, Guo, Tan, Jiang and Wu.

关键词： Functional assessment

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Low-complexity transmit antenna selection algorithm for massive MIMO

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The Journal of China Universities of Posts and Telecommunications 2020年第5期27卷 63-68页

作者： Li Xinmin Li Guomin Liu Yang Guo Tian Li Pu Li Yarn School of Communication and Information Engineering Xi'an University of Science and TechnologyXi’an 710054China School of Electrical and Control Engineering Xi’an University of Science and TechnologyXi’an 710054China

Massive multiple input multiple output(MIMO)systems can increase capacity and reliability ***,extremely high hardware costs and computational complexity lead to the demand for reasonable antenna *** at the problem that the traditional antenna selection algorithm based on maximizing sum capacity has large complexity and worse bit error rate(BER)performance,a two-step selection algorithm is proposed,which selects a part of the antennas based on the norm-based antenna selection(NBS)firstly,and then selects the antenna based on maximizing capacity via convex *** simulation results show that the improved algorithm has better BER performance than the traditional *** the same time,it reduces computational complexity greatly.

关键词： massive MIMO transmit antenna selection convex optimization

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Analysis on electric energy measuring method based on multi-resolution analysis

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Journal of Harbin Institute of technology(New Series) 2006年第2期13卷 193-195页

作者：张晓冰崔家瑞梁原华王慕坤 School of Measurement-Control Tech & Communications Engineering Harbin University of Science and Technology Harbin 150001 China

Along with the massive applications of the non-linear loads and the impact loads, many non-stationary stochastic signals such as harmonics, inter-harmonics, impulse signals and so on are introduced into the electric network, and these non-stationary stochastic signals have had effects on the accuracy of the measurement of electric energy. The traditional method like Fourier Analysis can he applied efficiently on the stationary stochastic signals, hut it has little effect on non-stationary stochastic signals. In light of this, the form of the signals of the electric network in wavelet domain will he discussed in this paper. A measurement method of active power based on multi-resolution analysis in the stochastic process is presented. This method has a wider application scope compared with the traditional method Fourier analysis, and it is of good referential value and practical value in terms of raising the level of the existing electric energy measurement.

关键词： electric energy measurement multi-resolution analysis active power

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Heptagonal core anti-resonant hollow-core fiber for laser beam mode shapers

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Chinese Optics Letters 2025年第4期23卷 040607-040607页

作者： Wang, Yang Zhang, Xiaobei Chen, Wei Zhang, Qi Yang, Yong Li, Maochun Yan, Miao Wang, Tingyun Key Laboratory of Specialty Fiber Optics and Optical Access Networks Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication Shanghai Institute for Advanced Communication and Data Science School of Communication and Information Engineering Shanghai University Shanghai200444 China Laboratory of Science and Technology on Marine Navigation and Control China State Shipbuilding Corporation Tianjin300131 China

We report a novel anti-resonant hollow-core fiber (ARF) with a heptagonal core surrounded by connected cladding tubes, which is employed as a laser beam mode shaper. Cladding nodes are formed between each pair of adjacent cladding tubes, which efficiently enhances the mode coupling, thus significantly suppressing higher-order modes (HOMs) within a short fiber length. Numerical investigation and simulation for variations in the curvature of each node are conducted, through which an optimized structure of cladding nodes is obtained. Experimental results demonstrate that for a 1-m-long ARF-based mode shaper, the output beam quality M2 is enabled, and the near-diffraction-limit beam quality is 1.03. The ARF presents a maximum average transmission power of 600 mW, achieving a total coupling efficiency of approximately 85%. Moreover, it is maintained for one hour without inducing any damage while maintaining beam quality. These results highlight the great potential of the mode shaper in applications such as laser surgery, precision welding, and laser writing. © 2025 Chinese Optics Letters.

关键词： Laser beams

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Three-Dimensional Numerical Simulation on Flow-Induced Vibration of Condenser Tube Bundles

Three-Dimensional Numerical Simulation on Flow-Induced Vibra...

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2021 OES China Ocean Acoustics, COA 2021

作者： Li, Yuelin Sun, Chao Liu, Yuechan Ai, Shiqin Harbin University of Science and Technology Harbin School of Measurement-Control Technology and Communication Engineering China Harbin City150080 China

ISBN: (纸本)9781728181905

Taking the heat exchange tube in the condenser as the research object, the three-dimensional finite element model of the heat exchange tube and the Internal and external fluid of pipe is established, and the bidirectional fluid-solid coupling calculation of the heat exchange tube is carried out. The time-domain and frequency-domain curves of lift, drag and displacement of the heat exchange tube and the time-domain and frequency-domain curves of the pressure pulsation in the tube are obtained. At the same time, the acoustic simulation calculation is carried out for the vibration noise of the heat exchange tube. The time domain and frequency domain curves of sound pressure near the heat exchange tube are obtained. The simulation results show that the frequency of pressure pulsation corresponds to the frequency of lift and drag. The flow velocity in the tube studied in this paper will affect the amplitude and waveform of the pressure pulsation but will not affect its frequency. The sound pressure frequency of the upper and lower sides of the heat exchange tube only corresponds to the lift frequency, and the sound pressure frequency on the left and right side corresponds to the lift and drag frequencies. © 2021 IEEE.

关键词： Flow velocity

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