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INFER OBJECTIVE FUNCTION OF GLYCEROL METABOLISM IN KLEBSIELLA PNEUMONIAE BASING ON BILEVEL PROGRAMMING

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Journal of Systems Science & Complexity 2010年第2期23卷 334-342页

作者： Zhaohua GONG Yongsheng YU Enmin FENG School of Mathematics and information Science Shandong Institute of Business and Technology Yantai264005 China. School of Mathematical Science Dalian University of Technology Dalian 116024 China.

Mathematical modelling of cellular metabolism plays an important role in understandingbiological functions and providing identification of targets for biotechnological *** paperproposes a nonlinear bilevel programming(NBP)model to infer the objective function of anaerobicglycerol metabolism in Klebsiella Pneumoniae(***)for 1,3-propanediol(1,3-PD)*** on the Kuhn-Tucker optimality condition of the lower level problem,NBP is transformedinto a nonlinear programming with complementary and slackness *** authors give the existencetheorem of solutions to *** efficient algorithm is proposed to solve NBP and its convergenceis also simply *** results reveal some interesting conclusions,e.g.,biomass productionis the main force to drive glycerol metabolism,and the objective functions,which are obtained in termof several different groups of flux distributions,are similar.

关键词： Bilevel programming Klebsiella Pneumoniae metabolism optimization model penalty method

FACE RECOGNITION USING TWO DIMENSIONAL LAPLACIAN EIGENMAP

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Journal of Electronics(china) 2008年第5期25卷 616-621页

作者： Chen Jiangfeng Yuan Baozong Pei Bingnan institute of information Science Bcijing Jiaotong University Beijing 100044 China School of information Engineering Dalian University Dalian 116522 China

Recently, some research efforts have shown that face images possibly reside on a nonlinear sub-manifold. Though Laplacianfaees method considered the manifold structures of the face images, it has limits to solve face recognition problem. This paper proposes a new feature extraction method, Two Dimensional Laplacian EigenMap （2DLEM）, which especially considers the manifold structures of the face images, and extracts the proper features from face image matrix directly by using a linear transformation. As opposed to Laplacianfaces, 2DLEM extracts features directly from 2D images without a vectorization preprocessing. To test 2DLEM and evaluate its performance, a series of ex- periments are performed on the ORL database and the Yale database. Moreover, several experiments are performed to compare the performance of three 2D methods. The experiments show that 2DLEM achieves the best performance.

关键词： (2DLEM) Face recognition Manifold Laplacianfaces Two Dimensional Laplacian EigenMap

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空间轨迹问题的粒子群仿真研究

系统仿真学报 2009年第19期21卷 6086-6090页

作者：李志洁刘向东段晓东大连民族学院非线性信息技术研究所大连116600

空间轨迹的搜索问题具有多个全局最优解,一种有效的解决方法是采用粒子群算法进行搜索。然而与一般的优化问题不同,轨迹问题要求算法中粒子适应值与粒子位置同时收敛。为此,针对已有的粒子群算法在轨迹搜索上的不足,提出了一种减速粒子... 详细信息

空间轨迹的搜索问题具有多个全局最优解,一种有效的解决方法是采用粒子群算法进行搜索。然而与一般的优化问题不同,轨迹问题要求算法中粒子适应值与粒子位置同时收敛。为此,针对已有的粒子群算法在轨迹搜索上的不足,提出了一种减速粒子群优化算法(SlowdownParticleSwarmOptimization,简称SPSO),从位置角度改善粒子群的收敛性能。该算法利用独立子群技术保证粒子收敛于不同的位置,并根据粒子适应值情况减半更新粒子飞行速度,以达到位置收敛的目标。仿真实验的结果表明了减速粒子群算法在位置收敛效果上的优越性。

关键词：轨迹群体智能粒子群优化仿真

Entropy number and non-linear approximations on multivariate Besov space by manifolds of finite pseudo-dimension

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Progress in Natural Science:Materials International 2006年第3期16卷 260-265页

作者： LONG Jingfan and FANG Gensun (School of Mathematical Sciences, Beijing Normal university, Beijing 100875, china Department of Computer Science, information technology institute, Beijing 100101, china) [a]School of Mathematical Sciences Beijing Normal University Beijing China [b]Department of Computer Science Information Technology Institute Beijing China

We determine the asymptotic order of entropy number and optimal non -linear approximations of anisotropic periodic Besov class of Bpθr(Td') (1≤p≤∞,1≤0≤∞) by manifolds of finite pseudo-dimension in the metric Lq... 详细信息

关键词： Pseudo-dimension anisotropic Besov class of functions entropy number nonlinear width.

Particle swarm optimization with a leader and followers

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Progress in Natural Science:Materials International 2008年第11期18卷 1437-1443页

作者： Junwei Wang Dingwei Wang institute of Systems Engineering,College of information Science and Engineering,Northeastern university,Shenyang 110004,china institute of Systems Engineering College of Information Science and Engineering Northeastern University Shenyang 110004 China

Referring to the flight mechanism of wild goose flock,we propose a novel version of Particle Swarm Optimization(PSO)with a leader and *** is referred to as Goose Team Optimization(GTO).The basic features of goose team flight such as goose role division, parallel principle,aggregate principle and separate principle are implemented in the recommended *** GTO,a team is formed by the particles with a leader and some *** role of the leader is to determine the search *** followers decide their flying modes according to their distances to the leader ***,a wide area can be explored and the particle collision can be really *** GTO is applied to four benchmark examples of complex nonlinear functions,it has a better computation perfor- mance than the standard PSO.

关键词： Particle swarm optimization Goose team optimization Role division Parallel principle Aggregate principle Separate principle

RECONSTRUCTION OF PRECIPITATION SERIES AND ANALYSIS OF CLIMATE CHANGE OVER PAST 500 YEARS IN NORTHERN china

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Journal of Hydrodynamics 2005年第6期17卷 737-745页

作者： RONG Yan-shu TU Qi-pu College of water Resources and Environment Hohai University Nanjing 210098 China Tianjin institute of Meteorological Science Tianjin 300074 China Nanjing university of information Science and technology Nanjing 210044 China

It is important and necessary to get a much longer precipitation series in order to research features of drought/flood and climate change. Based on dryness and wetness grades series of 18 stations in Northern china of 533 years from 1470 to 2002, the Moving Cumulative Frequency Method （MCFM） was developed, moving average precipitation series from 1499 to 2002 were reconstructed by testing three kinds of average precipitation, and the features of ell mate change and dry and wet periods were researched by using reconstructed precipitation series in the present paper. The results showed that there were good relationship between the reconstructed precipitation series and the observation precipiration series sincc 1954 and their relative root mean-square error were below 1.89%, that the relation between reconstructed series and the dryness and wetness grades series were nonlinear and this nonlinear relation implied that reconstructed series were reliable and could became foundation data for researching evolution of the drought and flood. Analysis of climate change upon reconstructed precipitation series revealed that although drought intensity of recent dry period from mid- dle 1970s of 20th century until early 21st century was not the strongest in historical climate of Northern china, intensity and duration of wet period was a great deal decreasing and shortening respectively, climate evolve to aridification situa- tion in Northern china.

关键词： reconstruction series dryness and wetness grades series precipitation series climate change Northern china

Delay-dependent robust H∞ control for uncertain fuzzy hyperbolic systems with multiple delays

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Progress in Natural Science:Materials International 2008年第1期18卷 97-104页

作者： Huaguang Zhanga ,*,Qingxian Gong a,b ,Yingchun Wang a aSchool of information Science and Engineering,Northeastern university,Shenyang 110004,china bDepartment of Electrical Engineering,Changchun institute of technology,Changchun 130012,china School of information Science and Engineering Northeastern University Shenyang 110004 China Department of Electrical Engineering Changchun Institute of Technology Changchun 130012 China

The robust H∞ control problem was considered for a class of fuzzy hyperbolic model(FHM)systems with parametric uncertainties and multiple ***,FHM modeling method was presented for time-delay nonlinear ***,by using Lyapunov–Krasov- skii approaches,delay-dependent suficient condition for the existence of a kind of state feedback controller was proposed,which was expressed as linear matrix inequalities(LMIs).The controller can guarantee that the resulting closed-loop system is robustly asymptot- ically stable with a prescribed H∞ performance level for all admissible uncertainties and ***,a simulation example was provided to illustrate the effectiveness of the proposed approach.

关键词： Fuzzy hyperbolic model Robust H1 control Asymptotical stability Linear matrix inequality Uncertain time-delay system

PARALLEL DYNAMIC ITERATION METHODS FOR SOLVING nonlinear TIME-PERIODIC DIFFERENTIAL-ALGEBRAIC EQUATIONS

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Journal of Computational Mathematics 2003年第3期21卷 367-374页

作者： Yao-lin Jiang(institute of information fe System Sciences, School of Science, Xi’an Jiaotong university,Xi’an 710049, china) institute of information & System Sciences School of Science Xi'an Jiaotong University Xi'an 710049

In this paper we presented a convergence condition of parallel dynamic iteration methods for a nonlinear system of differential-algebraic equations with a periodic constraint. The convergence criterion is decided by the spectral expression of a linear operator derived from system partitions. Numerical experiments given here confirm the theoretical work of the paper.

关键词： nonlinear dynamic equations Periodic solutions Dynamic iterations Engi- neering applications.

A NEW FUZZY NEURAL NETWORK CONTROLLER APPLIED IN THE GREENHOUSE

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A NEW FUZZY NEURAL NETWORK CONTROLLER APPLIED IN THE GREENHO...