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Denoising of hyperspectral remote sensing images using NSCT and KPCA
结合NSCT和KPCA的高光谱遥感图像去噪

WU Yiquan,WU Chao,<br>一全,
遥感学报 , 2012,
Abstract: As hyperspectral remote sensing image is easily interfered by noises, a denoising method of hyperspectral remote sensing image based on Nonsubsampled Contourlet Transform (NSCT) and Kernel Principal Component Analysis (KPCA) is proposed. First, hyperspectral image of each band is decomposed by NSCT to acquire the coefficients which are processed by KPCA. The proper principal components are selected for KPCA reconstruction according to noise features. Finally, the denoised image is obtained by performing inverse NSCT. Experimental results show that the proposed method can suppress noise interference in hyperspectral remote sensing images, and preserve the useful information of original data more completely.
Synchronization of delayed discrete-time neural networks
时滞离散神经网络的同步控制

Wu Ran-Chao,<br>
物理学报 , 2009,
Abstract: Using delayed state-feedback controller and analytic technique, the synchronization control of discrete-time neural network with delay is investigated. Sufficient conditions guaranteeing the synchronized behavior are obtained without assuming the boundedness and differentiability of activation functions. Numerical simulations show the effectiveness of the control scheme.
我国铅锌矿山土壤重金属污染综述及现状分析
Analysis of Soil Heavy Metals Pollution and Its Present Situation around Lead-Zinc Mining Areas in China
 [PDF]

徐佩,
Advances in Environmental Protection (AEP) , 2014, DOI: 10.12677/AEP.2014.45026
Abstract:
综述了我国铅锌矿山土壤重金属污染来源、特点和危害,分析了近几年我国铅锌矿山土壤重金属污染状况,并提出了一些污染治理的建议,以期为铅锌矿山土壤重金属污染的专项治理提供一定的理论帮助。
We analyze the source of heavy metals soil pollution, its pollution character and the harm of pol-lution, and review the condition of heavy metal soil pollution in lead-zinc mining areas in recent years to propose some suggestions for pollution control.
电力系统模型类噪声闭环辨识方法

电力系统自动化 , 2013, DOI: 10.7500/AEPS201204246
Abstract: 电力系统中多处负荷投切与变化等随机性质小扰动,导致系统响应始终存在类似噪声的小幅波动。文中提出利用广域测量类噪声信号闭环辨识被控电力系统模型,及时准确地反映系统当前动态特性,有效解决因仿真模型及参数误差造成的系统分析及控制器设计时效性和可信度差等问题。在研究多元自回归滑动平均(ARMAV)模型实现系统闭环辨识可行性的基础上,采用ARMAV模型拟合多元类噪声信号,进而基于模型实现电网正常运行过程中的系统模型闭环辨识。最后,将该方法分别应用于两区四机系统和36节点系统,证明了其准确性。
浅论中国“安全科学与工程”学科的现状及发展策略

科技导报 , 1999,
Abstract: 随着人类文明的不断发展和物质财富的日益增长,各行各业对安全的要求和全民自护的意识越来越高,“安全科学与工程”学科必将越来越得到人们的高度重视和发挥更大的作用,从而使“安全科学与工程”学科自身也将得到更快的发展。我国安全科学与工程学科目前面临的机遇  去年,国务院学位委员会学位办在广泛征求各方面的意见后确定了新的《授予博士、硕士学位和培养研究生的学科、专业目录》。
浅论中国“安全科学与工程”学科的现状及发展策略

科技导报 , 1999,
Abstract: 随着人类文明的不断发展和物质财富的日益增长,各行各业对安全的要求和全民自护的意识越来越高,“安全科学与工程”学科必将越来越得到人们的高度重视和发挥更大的作用,从而使“安全科学与工程”学科自身也将得到更快的发展。我国安全科学与工程学科目前面临的机遇  去年,国务院学位委员会学位办在广泛征求各方面的意见后确定了新的《授予博士、硕士学位和培养研究生的学科、专业目录》。
Clone Culture of Laminaria japonica and Induction of Its Sporophytes
海带无性繁殖系的形成及孢子体诱导

Zhou Zhigang,Wu Chaoyuan,<br>周志刚,
生物工程学报 , 1998,
Abstract: 海带无性繁殖系的形成及孢子体诱导周志刚吴超元(中国科学院海洋研究所青岛266071)海带(Laminaria)是具异型世代交替的大型经济褐藻,在生活史中出现一至数个细胞组成的雌、雄配子体阶段,再由雌配子体的卵囊受精长成孢子体[1]。现行的育苗法是于初...
The Flow-capturing Location-allocation Model with Risk Bottleneck Limitation
带危险度瓶颈限制的服务站截流选址-分配模型研究

Yang Jun,Yang Chao,Wu Yun,<br>杨珺,,
数学物理学报(A辑) , 2007,
Abstract: 该文考虑带危险度瓶颈限制的服务站截流选址-分配问题(FCLM).假设网络中各边有两个向量:长度和危险度.对于有一个起点和多个讫点的FCLM问题,网络的安全费用是一个关于可抵御最大危险度等级的非递减函数.该问题考虑如何选取可抵御最大危险度的等级和服务站的位置使得建站费用和安全费用之和最小.文中建立了该问题的模型并提出了基于后序遍历的替代算法.
Experimental Study of a Trussed Structure by Using FRF Based Substructuring Technique
刚架结构频域子结构法的实验研究

WU Shi-chao,CAI Guo-ping,<br>,蔡国平
实验力学 , 2011,
Abstract: This paper presents an exploratory experiment of a rigid frame structure by using Jetmundsen frequency based substructuring technique. The effect of interface integrity of degrees of freedom (DOFs) on synthesizing results was investigated. In experiment, the components of frequency response function (FRF) matrix related to the translational DOFs response and the force input were measured directly using accelerometer and force sensor, and those related to rotational DOFs response or moment input were obtained by using an indirect rotational DOFs measurement technique and modal analysis method. Experimental results indicate that dynamic characteristics of the structure may be effectively estimated by using the experimental substructure synthesis method. The introduction of rotational DOFs may improve the estimating quality.
Linear control and anti-control of chaotic systems with only one nonlinear term
含一个非线性项混沌系统的线性控制及反控制

Wu Ran-Chao,Guo Yu-Xiang,<br>,郭玉祥
物理学报 , 2010,
Abstract: The linear control and the anti-control of a class of chaotic systems with only one nonlinear term are studied. Based on the Routh- Hurwitz stability condition,the chaotic system is controlled and the stable state is reached. Then,the chaotic state is recovered through changing controlled coefficient and a new chaotic system follows. The basic dynamical behavior of the new chaotic system is investigated and numerical simulation shows the chaotic nature of this new system.
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