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第二十九届中国控制会议

作者： LIAN Jie 1,ZHANG Kai 1,SUN Wenan 2 1.faculty of Electronic and Information Engineering,Dalian university of Technology,Dalian 116024,P.R.China 2.College of Information Engineering,Dalian university,Dalian 116622,P.R.China

This paper studies the stability of switched Cohen-Grossberg neural networks with interval time-varying delay and distributed time-varying delay.A piecewise Lyapunov function is utilized to deal with the switching problems of *** switching signals are arbitraryunder the constraint of the average dwell time which is calculated by collecting the state decay estimation of *** conditions are obtained in terms of linear matrix inequality（LMI）to guarantee the exponential stability for the switched Cohen-Grossberg neural *** example is provided to illustrate the effectiveness of the proposed method.

关键词： Switched Systems Cohen-Grossberg Neural Networks Average Dwell Time Time-varying Delays

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A Novel Visual Tracking Algorithm Based on Random Sampling and Color Gradient

A Novel Visual Tracking Algorithm Based on Random Sampling a...

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2011 Chinese Control and Decision Conference（CCDC）

作者： Lifang Li is with the Information Engineering Department,Jilin Police College,Changchun,13.117,China Yang Lu and Xianliang Tong are with School of Computer Science and Information technology,Northeast Normal university,Changchun,13.117,China.Man Liu is with faculty of Mathematics,Dalian Nationalities university,Dalian,116600,China

In this paper,we propose a novel robust vehicle tracking method based on random ***,random sampling and prediction to the random sampling points are ***,color gradient feature of object contour combined with template match is used for *** the centroid of target is located through summing to the weighted random sampling *** method needn’t too many restrictions,for example a certain hypothesis or requirement to background et *** the calculating to object contour,too much time is ***,real-time and accurate tracking is achieved in this *** results show an important performance gain and better tracking accuracy in favor of our approach.

关键词： Shadow removing Detection and tracking of vehicles

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Soil Conservation Assessment in the Upper Yangtze River Basin Based on InVEST Model

Soil Conservation Assessment in the Upper Yangtze River Basi...

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2011 International Symposium on Water Resource and Environmental Protection(ISWREP 2011)

作者： REN Jing Key laboratory of Mountain Hazards and earth Surface Process, CAS, Chengdu, Sichuan 610041, China Institute of Mountain Hazards and Environment, CAS Graduate university of CAS, Beijing 100049, China.WANG Yukuan, FU Bin, XU Pei Key laboratory of Mountain Hazards and earth Surface Process, CAS, Chengdu, Sichuan 610041, China Institute of Mountain Hazards and Environment, CAS Chengdu, Sichuan 610041, China

Studying and revealing the spatial distribution of soil loss will play an important role in water and soil conservation planning. In this study, the Geographic Information System （GIS） technology and the Integrated Valuation of Ecosystem Services and Tradeoffs Tool （InVEST） model were applied to estimate the amount of soil loss and assess the soil conservation capacity by the main ecological system in the Upper Yangtze River Basin （UYRB）. The results show: （1） the annual potential soil erosion is 92.92×10 8 t year -1 . The area of average annual soil loss bellow 500 km -2 year -1 occupies 3..08% and above 5000 km -2 year-1 occupies 3..8%. （2）The annual actual soil erosion is 12.3.×10 8 t year -1 . Slight and moderate soil loss is in majority, about 68.15% of the watershed area is found out to be under moderate degree. （3.The annual soil conservation is 80.61×10 8 t year -1 , and the contributing percent of main individual ecosystems was as follows: the forest occupies 46.11%, grassland 24.21%. Forest ecosystem does best in soil conservation.

关键词： The Upper Yangtze River Basin (UYRB) USLE GIS Soil erosion Soil Conservation

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Short communication Linear analysis on the stability of lanthanide vapor complexes LnAl_3.l_(12)(Ln=LatoLu)

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Rare Metals 2003年第1期22卷 78-80页

作者： WANG Linshan and WANG YuhongDepartment of Chemistry, Northeastern university, Shenyang 110004, China

The reactions LnCl3.(s) + (3.2)Al2Cl6, (g) = LnAl3.l12 (g) for Ln = La to Lu were studied by quenching experiments in roughly the same temperature and pressure ranges (588-851 K and 0.01-0.22 MPa). Stability constants Kθ of lanthanide complexes LnAl3.l12 were calculated from the measurements. The values of Ig Kθ change linearly with the ionpotential (Z+/r) of lanthanide(Ⅲ) from La to Gd and from Tb to Lu, respectively, indicating the Gd break. There exist inclined W effect between Ig Kθ and the total angular momentum L of lanthanide(Ⅲ). And hereby lanthanide elements are divided into four segments, La-Nd, Pm-Gd, Tb-Ho, and Er-Lu. In each segment, the linearity is maintained.

关键词： linearity rare earth vapor complex stability constants quenching

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Synthesis of Novel Triarylphosphine Ligand by a New Way

Synthesis of Novel Triarylphosphine Ligand by a New Way

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中国化学会第四届有机化学学术会议

作者： GUO,Yu PENG, Zong-Hai MA, Meng-Lin ZHANG, Yang CHEN, Hua LI, Xian-Jun (Key Laboratory of Green Chemistry and Technology, Ministry of Education, The Institute of Homogeneous Catalysis, faculty of Chemistry, Sichuan university, Chengdu 610064) (Department of Chemistry, Xihua university, Chengdu 61193.)

＜正＞The triarylphosphite ligands are not only important intermediates in biphosphine ligand, but also can be used as ligands in the homogeneous catalysis by the transition metal phosphine complexes. In this paper, a series of new triarylphosphine ligands with long-chain alkoxyl group have been synthesized from triethyl phosphorite and p-alkoxy-bromobenzene. This synthesis way was straightforward, quick, reliable, and gave a universal method to afford a variety of triarylphosphine ligands with different substituents.

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PHANEROZOIC INHOMOGENEOUS REHEATING OF UPPER MANTLE RESPONSIBLE FOR PACIFIC GENESIS

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Geotectonica et Metallogenia 2001年第1期25卷 1-13页

作者： Takao YANO 1 and WU Gen yao 2 (1. Dept. of Environ. Science, faculty of Education and Regional Science, Tottori Univ., Tottori 680 8551, Japan 2. Lab. of Lithosphere Tectonic Evolution, Inst. of Geology, Chinese Academy of sciences, P.O.Box 9825, Be Dept.of Environ.Science Faculty of Education and Regional ScienceTottori Univ.Tottori 680-8551Japan Lab.of Lithosphere Tectonic Evolution Inst.of GeologyChinese Academy of SciencesP.O.Box 9825Beijing 100029China

The late Mesozoic two giant events that have synchronously occurred in the Pacific and periphery are the tectono magmatic activities of the Circum Pacific mobile belt and the Darwin Rise. Their dynamics analysis indicates that the geodynamics responsible for Pacific genesis has been driven by the gravity instability between a Pacific wide superplume head and its lithospheric overburden under the influence of eastward asthenospheric flow by the earth spin. The worldwide activation of mafic magmatism was initiated in the Paleozoic and climaxed around the Jurassic. The separated not worldwide distribution of the magmatism on the earth suggests the inhomogeneous reheating of upper mantle, as represented by the Pacific wide superplume head. The Phanerozoic reheating thus put forward the earth history into a new geotectonic stage, i.e., the diwa stage.

关键词： Inhomogeneous reheating upper mantle pacific genesis

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钛酸铝陶瓷粉体的制备研究

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四川大学学报（自然科学版） 2003年第4期40卷 740-744页

作者：鄢洪建陈种菊苏志珊四川大学化学学院成都610064

以NH4HCO3.沉淀剂的共沉淀法制备了钛酸铝(Al2TiO5)陶瓷粉体实验发现,此反应体系的pH值对钛、铝元素的沉淀量有重要的影响,只有在pH6.0～6.5左右极小范围内能保证钛、铝完全沉淀采用FT IR、XRD、DTA TG等分析手段确定了前驱体的组成... 详细信息

以NH4HCO3.沉淀剂的共沉淀法制备了钛酸铝(Al2TiO5)陶瓷粉体实验发现,此反应体系的pH值对钛、铝元素的沉淀量有重要的影响,只有在pH6.0～6.5左右极小范围内能保证钛、铝完全沉淀采用FT IR、XRD、DTA TG等分析手段确定了前驱体的组成通过XRD、DTA TG等分析表明,前驱体在热处理形成Al2TiO5的过程中,物相的变化情况是:碳酸铝铵→无定形Al2O3.α Al2O3.无定形TiO2→锐钛型TiO2→金红石型TiO2;在1000℃左右α Al2O3.金红石TiO2开始形成Al2TiO5,然后在13.0℃完全形成Al2TiO5 同时,TEM分析显示Al2TiO5粉体的形貌为球形。

关键词：钛酸铝共沉淀法陶瓷粉体

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Linear Quadratic Optimal Control Problem for Singular Distributed Parameter System in Hilbert Space

Linear Quadratic Optimal Control Problem for Singular Distri...

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第二十九届中国控制会议

作者： LI Shaojie1,WANG Jiangshu2 1.faculty of Science,Shaanxi university of Science and Technology,Xi''an 710021,P.R.China2.School of Computer Science and Engineering,Jiangsu Teachers university of Technology,Changzhou 213.01,P.R.China

Linear quadratic optimal control on a finite time interval for singular distributed parameter control system is discussed via functional analysis and the theory of GE0-semi-group in Hilbert *** uniqueness and existence of minimizing input are proved *** research is theoretically important for studying the optimal control problem of the singular distributed parameter control systems.

关键词： Linear Quadratic Optimal Control GE0-Semi-Group Singular Distributed Parameter System Hilbert Space

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