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Communications in Theoretical Physics 2007年第12期48卷 1081-1087页

作者： SHI De-Heng~1 MA Heng~1 SUN Jin-Feng~(1,2.and ZHU Zun-Lue~1~1 College of Physics & information engineering,Henan {2. university,Xinxiang 453007,china~2.Department of Physics & Electron Science,Luoyang {2. university,Luoyang 47102.,china College of Physics & information engineering Henan Normal University Xinxiang 453007 China Department of Physics & Electron Science Luoyang Normal University Luoyang 471022 China

The symmetry-adapted-duster configuration-interaction method is used to investigate the spectroscopicproperties of ~7Li_2.A^1∑_u^+) over the internuclear distance ranging from 2.4ao to *** complete potential energycurves are calculated at numbers of basis *** the ab initio calculated points are fitted to the analytic MurrellSorbie function and then employed to compute the spectroscopic *** comparison,the spectroscopic constantsreproduced by the potential attained at D95(3df,3pd) are found to be very close to the experiments,a^d the values (T_e,D_e,R_e,ω_e,ω_eχ_e,α_e and B_e) are of 1.732.93 eV,1.161 36 eV,0.313 2. nm,2.1.95 cm^(-1),1.62. cm^(-1),0.005 35 cm^(-1),and0.490 cm^(-1),*** the potential obtained at D95(3df,3pd),the totally 75 vibrational states are found whenJ=*** vibrational levels,the classical turning points and the inertial rotation constants of the first 68 vibrationalstates are calculated for the first time and compared with the available *** agreement is *** centrifugal distortion constants of the first 32.vibrational states are also reported for the first *** reasonabledissociation limit for ~7Li_2.A^1∑_u^+) is deduced using the calculated results at present.

关键词： analytic potential energy function harmonic frequency dissociation energy vibrational level classical turning point

Restoration method of characters on Jiagu rubbings based on Poisson distribution and fractal geometry

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Science china(information Sciences) 2010年第7期53卷 1296-1304页

作者： GU ShaoTong1,2.3, FENG GeFei1,2.3, MA XiaoHu1,2.4 & YANG YiMing1,2.3 1Institute of Linguistics, Xuzhou normal university, Xuzhou 2.1009, {2. 2.iangsu College Key Lab of Linguistic Sciences and Neuro-cognition engineering, Xuzhou normal university, Xuzhou 2.1009, {2. 3Linguistic Science College, Xuzhou normal university, Xuzhou 2.1009, {2. 4School of Computer Science and Technology, Soochow university, Suzhou 2.5006, {2. 1. Institute of Linguistics Xuzhou Normal University Xuzhou 221009 China2. Jiangsu College Key Lab of Linguistic Sciences and Neuro-cognition Engineering Xuzhou Normal University Xuzhou 221009 China3. Linguistic Science College Xuzhou Normal University Xuzhou 221009 China4. School of Computer Science and Technology Soochow University Suzhou 215006 China

A scheme for character restoration of Jiagu rubbings based on Poisson distribution and fractal geometry is proposed in this paper. The distribution characteristics of the connected regions on Jiagu rubbings is analyzed, and all the connected regions are recognized according to differences between these and their mathematical expectations. Regions are recognized as noise regions and filled if the differences are negative, while stroke regions are reserved. The attributes of the character image edges on Jiagu rubbings are also analyzed. The fractal dimensions of the character edge of Jiagu rubbings are calculated by means of statistics. The feature points are obtained using the cosine of the angle between the two vectors of the point and the consecutive two points. Different compression transformations with weighted coordinates are performed on different strokes and segments of the characters so as to smoothen the character edge of Jiagu rubbings images. Experimental results show that our scheme could successfully clear noise regions and polish the character edge of Jiagu rubbings.

关键词： Jiagu rubbings Poisson distribution fractal geometry fractal dimension compression transformation character restoration

Analysis of forest backscattering characteristics based on polarization coherence tomography

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Science china(Technological Sciences) 2010年第S1期53卷 166-175页

作者： LUO HuanMin 1,LI XiaoWen 1,2.CHEN ErXue 3,CHENG Jian 4 & CAO ChunXiang 2. Institute of Geo-Spatial information Science and Technology,university of Electronic Science and Technology of {2.,Chengdu 610054,{2. 2.State Key Laboratory of Remote Sensing Science,Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing normal university,Beijing 100101,{2. 3Institute of Forest Resources information Technique of Chinese Academy of Forestry,Beijing 100091,{2. 4 School of Electronic engineering,university of Electronic Science and Technology of {2.,Chengdu 610054,{2. State Key Lab Remote Sensing Sci Beijing 100101 Peoples R China Beijing normal Univ Beijing 100101 Peoples R China Univ Elect Sci & Technol china Inst Geospatial Informat Sci & Technol Chengdu 610054 Peoples R China Chinese Acad Forestry Inst Forest Resources Informat Tech Beijing 100091 Peoples R China Univ Elect Sci & Technol china Sch Elect Engn Chengdu 610054 Peoples R China

It is difficult to make an inventory of vertical profiles of forest structure parameters in field ***,analysis and understanding of forest backscattering characteristics contribute to estimation and detection of forest vertical structure because of the close relationships between backscattering characteristics and structure *** vertical structure function in the complex interferometric coherence definition,which represents the vertical variation of microwave scattering with the penetration depth at a point in the 2.D radar image and can be used to analyze the forest backscattering characteristics,can be reconstructed from polarization coherence tomography(PCT).Based on PCT,the paper analyzes the forest backscattering characteristics and explores the inherent relationship between the result of PCT and the forest structure parameters from numerical simulation of Random Volume over Ground model(RVoG),Polarimetric SAR interferometry(PolInSAR)simulation of forest scene and PolInSAR data at L-band of the test site ***,the effects of the extinction coefficient and surface-to-volume scattering ratio in RVoG model on vertical backscattering characteristics are analyzed by means of numerical ***,by applying PCT to L-band POLInSAR simulations of forest scene,different variations of vertical backscattering due to different extinction coefficients and the ratios of surface-to-volume scattering resulting from different polarizations,forest types and densities are displayed and *** a concept of relative average backscattering intensity is presented,and the factors which affect its vertical distribution are also *** results show that there is high sensitivity of the vertical distribution of forest relative average backscattering intensity to the polarization,forest type and ***,based on repeat pass DLR E-SAR L-band airborne POLInSAR data,the capability of PCT technology for detection

关键词： backscattering characteristic POLInSAR PCT vertical structure function

Explicit classes of permutation polynomials of F33m

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Science china Mathematics 2009年第4期52卷 639-647页

作者： DING CunSheng1, XIANG Qing2. YUAN Jin3 & YUAN PingZhi4 1 Department of Computer Science and engineering, The Hong Kong university of Science and Technology, Clearwater Bay, Kowloon, Hong Kong, {2. 2.Department of Mathematical Sciences, university of Delaware, Newark, DE 19716, USA 3 Department of Computing, Macquarie university, NSW 2.09, Australia 4 School of Mathematics, south {2. normal university, Guangzhou 510631, {2. Department of Computer Science and engineering The Hong Kong University of Science and Technology Hong Kong China Department of Mathematical Sciences University of Delaware Newark USA Department of Computing Macquarie University Sydney Australia School of Mathematics South China Normal University Guangzhou China

Permutation polynomials have been an interesting subject of study for a long time and have applications in many areas of mathematics and engineering. However, only a small number of specific classes of permutation polynomials are known so far. In this paper, six classes of linearized permutation polynomials and six classes of nonlinearized permutation polynomials over F33m are presented. These polynomials have simple shapes, and they are related to planar functions.

关键词： permutation polynomials planar functions

Predictor-corrector interior-point algorithm for linearly constrained convex programming

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Journal of Central south university 2001年第3期13卷 208-212页

作者： LIANG Xi-ming (College of information Science & engineering, Central {2. university, Changsh a 410083, china) 1. College of information Science & engineering Central South University 410083 Changsha China

Active set method and gradient projection method are curre nt ly the main approaches for linearly constrained convex programming. Interior-po int method is one of the most effective choices for linear programming. In the p aper a predictor-corrector interior-point algorithm for linearly constrained c onvex programming under the predictor-corrector motivation was proposed. In eac h iteration, the algorithm first performs a predictor-step to reduce the dualit y gap and then a corrector-step to keep the points close to the central traject ory. Computations in the algorithm only require that the initial iterate be nonn egative while feasibility or strict feasibility is not required. It is proved th at the algorithm is equivalent to a level-1 perturbed composite Newton method. Numerical experiments on twenty-six standard test problems are made. The result s show that the proposed algorithm is stable and robust.

关键词： linearly constrained convex programming predictor corrector interior point algorithm numerical experiment

Design of a Digital Management System for the Sintering Material Ground

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International Journal of Automation and computing 2012年第6期9卷 587-593页

作者： Yan Cai 1,2.Min Wu 1,2.Jin-Ni Zhou 1,2.Xin Chen 1,2.1 School of information Science and engineering,Central {2. university,Changsha 410083,china 2.Hunan engineering Laboratory for Advanced Control and Intelligent Automation,Changsha 410083,china 1. School of information Science and engineering Central South University Changsha 410083 China 2. Hunan engineering Laboratory for Advanced Control and Intelligent Automation Changsha 410083 China

There are many kinds and a large number of raw materials in the sintering material ground to be managed,while it is difficult to obtain the precise inventory values,which often leads to high ***,the external factors of material ground are difficult to handle,such as weather variation,order fluctuation,measurement failure and so *** solve such raw material management problems,a digital management system has been ***,the practical requirements and the raw material management processes are ***,optimization and prediction methods are used to calculate the inventory according to the practical *** the help of practical technologies and production conditions,the developed system has been applied to a large-scale sintering material *** practical running results of the application demonstrate the validity of the proposed digital management system.

关键词： Digital sintering material ground prediction methods optimization methods management system.

Neural integrated control for a free-floating space robot with suddenly changing parameters

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Science china(information Sciences) 2011年第10期54卷 2091-2099页

作者： ZHANG WenHui 1,2.,QI NaiMing 2.MA Jing 1,3 & XIAO AYang 2.1 School of Electromechanical engineering,Xuzhou normal {2.,Xuzhou 2.1116,china 2.School of Aerospace,Harbin Institute of Technology,Harbin 150001,china 3 Department of engineering,Northeast Agricultural {2.,Harbin 150001,china 1. School of Electromechanical engineering Xuzhou Normal University Xuzhou 221116 China2. School of Aerospace Harbin Institute of Technology Harbin 150001 China3. Department of Engineering Northeast Agricultural University Harbin 150001 China

Because the state of a free-floating space robot model is uncertain and sudden changes in the model parameters might undermine the stability of the system,this paper proposes a control strategy based on a variable structure neural integrated *** scheme does not need a precise space robot model,making use of the radial basis function neural network ability approach to learn about an uncertain *** network weights are adjusted online in *** the early period of the control phase and parameter changes,the variable structure controller compensates for the uncertain model which the neural network could not learn *** also creates global asymptotic stability for the whole closed-loop *** results show that the controller can handle bad changeable conditions and has important application value for defense,aerospace and other major security fields.

关键词： neural network variable structure adaptive control global asymptotical stability

The change of geographical distribution of two Asian species of rhinoceros in Holocene

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Journal of Geographical Sciences 1998年第1期8卷 84-89页

作者： Liu Hongjie Department of Geography, south china {2. university, Guangzhou 510631, china

At present only five species of rhinoceros surrive in the world, among which three in Asia No wild rhinoceros has been found alive in East Asia now But many recent evidences reveal the fact that rhinoceros still lived not very long ago in the East Asian Continent of Holocene The attention to East Asia rhinoceros in Holocene first arose from archaeological studies on ancient ruins in china Archaeologists first found some subfossil skeletons of rhinoceros in ruins of Yin Dynasty in Anyang of Henan in the 1930s Then more skeletons of rhinoceros were found in many other Neolithic Ages runis, such as in Tonghai (Yunnan), Nanning (Guangxi), Xichuan (Henan), Yuyao (Zhejiang), and Haian (Jiangsu).(Guangxi Archaeological Team 1972. Jia 1977; Wu 1983; Huang and Liang 1984; Xu 1990). Moreover, Zhou Benxiong reported some rhinoceros teeth containing residual organic matter found in caves in the middle and lower reaches of Yangtze River According to a number of very now skeletons of rhinoceros found in some caves in Central china and {2. china, Yang Zhongjian drew the inferences that rhinoceros might live in the {2.ern part of china until in the Han Dynasty (about 2.00 yrs B P ) at least These discoveries provided the material evidences for the distribution of rhinoceros in East Asian Continent Recently, some scholars brought forward more new information about Chinese rhinoceros from the analysis of historical records and investigations of unearthed cultural relics respectively (Wen and He 1981; Sun 1982.. Based on the above materials and informations, this paper is going to deal with the species of rhinoceros once living in East Asia from the viewpoint of zoo geography At last, we brouhgt up the evolution process of the rhinoceros in distribution in Asia with comprehensive analysis of physiographical elements and human activities

关键词： rhinoceros geographical distribution evolution process East Asia Holocence

Efficient video cutout based on adaptive multilevel banded method

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Science china(information Sciences) 2012年第5期55卷 1082-1092页

作者： CHEN MinGang 1,SUI BoCong 1,GAO Yan 2.& MA LiZhuang 1 1 Department of Computer Science and engineering,Shanghai Jiao Tong university,Shanghai 2.02.0,{2. 2.Software engineering Institute,East {2. normal university,Shanghai 2.0062.{2. 1. Department of Computer Science and engineering Shanghai Jiao Tong University Shanghai 200240 China2. Software Engineering Institute East China Normal University Shanghai 200062 China

Although many efficient image cutout approaches have been proposed,it is still a challenge to cut out foreground objects from a video clip because of the costs of time and memory consumption and the difficulty in maintaining temporal coherence for the cutout *** this paper,we propose a novel and efficient video cutout approach by extending a multilevel banded image segmentation method to video *** our method,the segmentation results are propagated frame by frame at the lowest resolution level based on optical flow,and are refined in image pyramids level by level through banded graph *** construct an adaptive narrow band to ensure that the segmentation result falls exactly into the narrow band during *** results show that the video cutout approach based on adaptive multilevel bands dramatically reduces time and memory costs,and achieves ideal segmentation results.

关键词： video object cutout multilevel band graph cuts video segmentation

A novel framework of multi-channel acoustic echo cancellation

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Progress in Natural Science:Materials International 2006年第9期16卷 983-987页

作者： HE Zhaoshui, XIE Shengli and FU Yuli (School of Electronics & information engineering, {2. china university of Technology, Guangzhou 510640, china) [a]School of Electronics & information engineering South China University Guangzhou China

Conventionally, multi-channel acoustic echo cancellation (AEC) achieves the goal by estimating the impulse responses of the local room. However, generally, conventional AEC methods have no unique solutions. Due to the strong correlation of the input signals, conventional methods are with many disadvantages. To overcome this problem, a new framework is proposed in this paper based on SIMO (single input multiple output) blind deconvolution. Under the new framework, we achieve the goal by identifying the impulse responses of distant room and avoiding the disadvantages of the conventional methods.

关键词： SIMO blind deconvolution multi-channel acoustic echo cancellation impulse response.