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13篇 您的检索式:作者名="Xiuguang"
    题名 作者 年代 出处 被引量
1A Blind Watermarking Algorithm Resisting to Geometric Transforms Based on SVD显示文摘A new watermarking algorithm resisting to geometric transformation based on singular value decomposition(SVD) in logarithm polar coordinate is proposed.The log-polar mapping(LPM) is used to resist rotation and scaling attacks,and the odd-even quantization algorithm is used to embed watermark so it can be extracted without the original host image.The experiments show that the proposed algorithm not only resists various geometric attacks but also is robust enough to the common signal processing.LI Xiuguang YANG Xiaoyuan 2011Wuhan University Journal of Natural Sciences2011,16,6:2
2Solvents effects on the self-assemblies of 5,5′-bis(3-hydroxyphenyldiazo)-dipyrromethane显示文摘Zhenming Yin Min Wang Wuyan Wang Xiuguang Wang 2013Journal of Molecular Structure2013,,:1
3Isolation and identifica- tion of nitrobacteria adapted to low temperature 显示文摘Hao Yun Jiang Xiuguang Tian Qing 2012Advanced Ma- terials Research2012,518,:1
4Experimental study and numerical simulation on bonding behavior of the new HB-FRP strengthening technology 显示文摘Guan Yanhua Jiang Binsong Song Xiuguang 2011Journal of Per- formance of Constructed Facilities2011,26,2:1
5Development of low-coherence high-power laser drivers for inertial confinement fusion显示文摘The use of low-coherence light is expected to be one of the effective ways to suppress or even eliminate the laser–plasma instabilities that arise in attempts to achieve inertial confinement fusion.In this paper,a review of low-coherence high-power laser drivers and related key techniques is first presented.Work at typical low-coherence laser facilities,including Gekko XII,PHEBUS,Pharos III,and Kanal-2 is described.The many key techniques that are used in the research and development of low-coherence laser drivers are described and analyzed,including low-coherence source generation,amplification,harmonic conversion,and beam smoothing of low-coherence light.Then,recent progress achieved by our group in research on a broadband low-coherence laser driver is presented.During the development of our low-coherence high-power laser facility,we have proposed and implemented many key techniques for working with low-coherence light,including source generation,efficient amplification and propagation,harmonic conversion,beam smoothing,and precise beam control.Based on a series of technological breakthroughs,a kilojoule low-coherence laser driver named Kunwu with a coherence time of only 300 fs has been built,and the first round of physical experiments has been completed.This high-power laser facility provides not only a demonstration and verification platform for key techniques and system integration of a low-coherence laser driver,but also a new type of experimental platform for research into,for example,high-energy-density physics and,in particular,laser–plasma interactions.Yanqi Gao Yong Cui Lailin Ji Daxing Rao Xiaohui Zhao Fujian Li Dong Liu Wei Feng Lan Xia Jiani Liu Haitao Shi Pengyuan Du Jia Liu Xiaoli Li Tao Wang Tianxiong Zhang Chong Shan Yilin Hua Weixin Ma Xun Sun Xianfeng Chen Xiuguang Huang Jian Zhu Wenbing Pei Zhan Sui Sizu Fu 2020Matter and Radiation at Extremes2020,5,6:1
6The structure of a sulfated galactan from Porphyra haitanensis and its in vivo antioxidant activity显示文摘ZHANG Quanbin LI Ning LIU Xiuguang 2004Carbohydrate Research2004,339,1:1
7Remote monitoring of home-based noninvasive ventilation in children with obstructive sleep apnea–hypopnea syndrome显示文摘Dabo Liu Jing Zhou Xiuguang Liang Zhenyun Huang Zongyu Tan Jianwen Zhong 2012Sleep and Breathing2012,,2:1
8An advanced model to assess fouling and slagging in coal fired boilers显示文摘Xu Minghou He Xiuguang Azevedo J L T 2002International Journal of Energy Research2002,26,14:1
9Three new MOFs with unusual Cu_6~Ⅱcluster, linear Cu~Ⅱ chain and triangular Cu_3~Ⅱcore motifs tuned by sulfonate group: Synthesis, structures and magnetic properties显示文摘Three new MOFs with the same components but different structures and magnetic behavior, {[Cu6(atr)6(H2O)2(μ3 OH)2(SO4)5 ]·5.25H2O} n (1), {[Cu2(atr)2( -OH)2(SO4 )]·3H2O} n (2), and {[Cu7(atr)6(H2O)6(μ3-OH)2(SO4 )6 ]·2H2O} n (3) (atr = 4-amino-1,2,4-triazole), were respectively synthesized by diffusion reactions in the presence of different structure-directing agents. Complex 1 is a slightly spin-frustrated antiferromagnetic layer with sulfonate aggregated CuⅡ6 clusters periodically extended by ditopic sulfonate linkers. 2 is a grid-based coplanar sheet with hydroxyl group bridgedCuOCulinear-chain interlinked by pairs of μ3 -atr ligands, exhibiting strong antiferromagnetic interactions to lead to an S = 0 spin ground state at low temperature. In contrast, air-instable 3 has a ladder-like broad-ribbon structure constructed from triangular CuⅡ3 cores and centrosymmetric CuⅡ1 octahedra. Obviously, the variable CuⅡ -ligand connectivity and the involving magnetic properties are significantly dominated by the cooperative and variable binding modes of the mixed sulfonate-atr ligands and bi-/tridentate bridging hydroxyl heterobridges.YANG EnCui WANG XiuGuang ZHANG CuiHua YANG Na LIU ZhongYi ZHAO XiaoJun 2013Science China Chemistry2013,56,4:1
10Extraction and analysis of tree canopy height information in high-voltage transmission-line corridors by using integrated optical remote sensing and LiDAR显示文摘Traditional inspection methods cannot quickly and accurately monitor tree barriers and safeguard the transmission lines.To solve these problems,in this study,we proposed a rapid canopy height information extraction method using optical remote sensing and LiDAR,and used UAV optical imagery with LiDAR to monitor the height of trees in a university and a high-voltage transmission line corridor in the Ningxia region.The results showed that the relative error of tree height extraction using UAV optical images was less than 5%,and the lowest relative error was 0.11%.The determination coefficient R^(2) between the optical image tree height extraction results and the measured tree height was 0.97,thus indicating a high correlation for both.In the field of tree barrier monitoring,the determination coefficient R^(2) of tree height extracted using airborne LiDAR point cloud,and canopy height model(CHM)and of the measured tree height were 0.947 and 0.931,respectively.The maximum and minimum relative error in tree height extraction performed using point cloud was 2.91%and 0.2%,respectively,with an extraction accuracy of over 95%.The experimental results demonstrated that it is feasible to use UAV optical remote sensing and LiDAR in monitoring tree barriers and tree height information extraction quickly and accurately,which is of great significance for the risk assessment and early warning of tree barriers in transmission-line corridors.Jinpeng Hao Xiuguang Li Hong Wu Kai Yang Yumeng Zeng Yu Wang Yuanjin Pan 2023Geodesy and Geodynamics2023,14,3:0
11Calibration and verification of streaked optical pyrometer system used for laser-induced shock experiments显示文摘Although the streaked optical pyrometer(SOP)system has been widely adopted in shock temperature measurements,its reliability has always been of concern.Here,two calibrated Planckian radiators with different color temperatures were used to calibrate and verify the SOP system by comparing the two calibration standards using both multi-channel and single-channel methods.A high-color-temperature standard lamp and a multi-channel filter were specifically designed for the measurement system.To verify the reliability of the SOP system,the relative deviation between the measured data and the standard value of less than 5%was calibrated out,which demonstrates the reliability of the SOP system.Furthermore,a method to analyze the uncertainty and sensitivity of the SOP system is proposed.A series of laserinduced shock experiments were conducted at the‘Shenguang-Ⅱ’laser facility to verify the reliability of the SOP system for temperature measurements at tens of thousands of kelvin.The measured temperature of the quartz in our experiments agreed fairly well with previous works,which serves as evidence for the reliability of the SOP system.Zhiyu He Guo Jia Fan Zhang Xiuguang Huang Zhiheng Fang Jiaqing Dong Hua Shu Junjian Ye Zhiyong Xie Yuchun Tu Qili Zhang Erfu Guo Wenbing Pei Sizu Fu 2019High Power Laser Science and Engineering2019,7,3:0
12Algebraic-Stress Turbulent Model of Planar 2-D Pollutant Transportation in Curvilinear Coordinates显示文摘The shallow-water equations and pollutant convective-diffusive equation are transformed into curvilinear coordinate system. The anisotropic algebraic-stress turbulent model is introduced to simulate the turbulence items, and algebraic-stress turbulent model of planar 2-D pollutant convective-diffusive in curvilinear coordinates is build. The meandering channel with measured data of concentration in lab is adopted to validate the model, and the distribution figure of pollutant concentration field calculated through this model and that of the k-ε model, which show the model is superior to k-ε turbulent model in dealing with anisotropy character of flow.Wu Xiuguang Huang Shichang Shen Yongming Y K Guo 2005工程科学(英文版)2005,3,3:0
13Differential introgression suggests candidate beneficial and barrier loci between two parapatric subspecies of Pearson's horseshoe bat Rhinolophus pearsoni显示文摘Xiuguang MAO Shuyi ZHANG Stephen J. ROSSlTER 2016Current Zoology2016,62,4:0
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