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A Class of Nonlinear Nonlocal Singularly Perturbed Reaction Diffusion Systems

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Wuhan University Journal of Natural Sciences 2008年第1期13卷 9-13页

作者： CHEN Lihua Department of Mathematics and Computer Science Fujian Normal University Fuqing 350300 Fujian China

The singularly perturbed initial boundary value problems for the reaction diffusion system are raised. Firstly, under suitable conditions, using a iteration technique, the differential inequalities theorem is constructed and introducing two auxiliary functions the existence and uniqueness theorem of solution for the basic reaction diffusion system is proved. Using the singularly perturbed method the formal asymptotic expressions of the solution are constructed with power series theory. By using the comparison theorem the existence and its asymptotic behavior of solution for the original problem are studied. Finally, using method of estimate inequalities, the structure of solutions for the problem is discussed thoroughly in three cases and asymptotic solution of the original problem is given. The asymptotic behavior of solution in the three cases is proved.

关键词： reaction diffusion system singular perturbation initial boundary value problem

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论高校采访工作的转向

图书馆论坛 2000年第3期20卷 47-49页

作者：苏景乃福建师大福清分校图书馆福清350300

从高校教育体制改革的深入、读者需求的拓展、文献出版品种的剧增、载体类型的多样、发行情况的变化等五个方面 ,论证新时期高校图书馆采访工作在采访原则、采访目标、采访协作、采访类型、采访渠道等方面转向的可行与必要。提出目前的... 详细信息

从高校教育体制改革的深入、读者需求的拓展、文献出版品种的剧增、载体类型的多样、发行情况的变化等五个方面 ,论证新时期高校图书馆采访工作在采访原则、采访目标、采访协作、采访类型、采访渠道等方面转向的可行与必要。提出目前的采访工作 ,应满足读者多层次、多视角、多学科、多类型、多文种的信息需求 ;面对新形势的挑战 ,高校图书馆采访工作的转向是完全必要的。

关键词：高校图书馆文献资源建设图书采购工作

A CLASS OF NONLOCAL SIINGULARLY PERTURBED NONLINEAR BOUNDARY VALUE PROBLEMS

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Annals of Differential Equations 1997年第2期13卷 140-145页

作者：黄蔚章福建师大福清分校 350300

The nonlocal singularly perturbed nonlinear problem is considered. Underthe appropriate assumptions the author proved that there exists a solution andthe estimation of solution is obtained using the method of differe... 详细信息

关键词： Singular perturbation Differential inequality Nonlocal Boundary value problem

Asymptotic Solution of Quasi-Linear Singularly Perturbed Boundary Value Problems with Singular Equation

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Wuhan University Journal of Natural Sciences 2010年第2期15卷 127-129页

作者： CHEN Lihua1, MO Jiaqi2,3 1. Department of Mathematics and Computer Science, fuqing Branch of Fujian Normal University, fuqing 350300, Fujian, China 2. Department of Mathematics, Anhui Normal University, Wuhu 241000, Anhui, China 3. Division of Computational Science, E-Institutes of Shanghai Universities at Shanghai Jiao Jong University, Shanghai 200240, China Department of Mathematics and Computer Science Fuqing Branch of Fujian Normal University Fuqing China Department of Mathematics Anhui Normal University Wuhu China Division of Computational Science E-Institutes of Shanghai Universities at Shanghai Jiao Jong University Shanghai China

A class of quasi-linear singularly perturbed boundary value problems with singular equation is considered. Under suitable conditions, the existence and asymptotic behavior of a solution for the boundary value problem are studied by using the theory of differential inequalities, and the uniformly valid asymptotic expansion of solution with boundary layer is obtained.

关键词： nonlinear singular equation singular perturbation boundary value problem

Scattering-based hybrid network for facial attribute classification

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Frontiers of Computer Science 2024年第3期18卷 105-116页

作者： Na LIU Fan ZHANG Liang CHANG fuqing DUAN School of Artificial Intelligence Beijing Normal UniversityBeijing 100875China

Face attribute classification(FAC)is a high-profile problem in biometric verification and face *** recent research has been devoted to extracting more delicate image attribute features and exploiting the inter-attribute correlations,significant challenges still *** scattering transform(WST)is a promising non-learned feature *** has been shown to yield more discriminative representations and outperforms the learned representations in certain *** to the image classification task,WST can enhance subtle image texture information and create local deformation *** paper designs a scattering-based hybrid block,to incorporate frequency-domain(WST)and image-domain features in a channel attention manner(Squeezeand-Excitation,SE),termed WS-SE *** with CNN,WS-SE achieves a more efficient FAC performance and compensates for the model sensitivity of the small-scale affine *** addition,to further exploit the relationships among the attribute labels,we propose a learning strategy from a causal *** cause attributes defined using the causalityrelated information can be utilized to infer the effect attributes with a high confidence *** analysis experiments demonstrate the effectiveness of our model,and our hybrid model obtains state-of-the-art results in two public datasets.

关键词： wavelet scattering transform causality-related learning facial attribute classification

维普期刊数据库评论

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含积分算子拟线性系统边值问题的奇摄动

数学研究 2000年第2期33卷 177-183页

作者：陈育森福建师大福清分校!福建福清350300

研究奇摄动积分微分方程组边值问题εy″=f(x,y,Ty,ε) y′+g(x,y,Ty,ε) ;　 y(0 ,ε) =A(ε) ,　 y(1 ,ε) =B(ε)其中 y、g、A和 B均为 n维向量函数 ,f是 n× n矩阵函数 ,(Ty) (x) =∫x0 K(x,s,y(s,ε) ,ε) ds.在一定假设条件下 ,... 详细信息

研究奇摄动积分微分方程组边值问题εy″=f(x,y,Ty,ε) y′+g(x,y,Ty,ε) ;　 y(0 ,ε) =A(ε) ,　 y(1 ,ε) =B(ε)其中 y、g、A和 B均为 n维向量函数 ,f是 n× n矩阵函数 ,(Ty) (x) =∫x0 K(x,s,y(s,ε) ,ε) ds.在一定假设条件下 ,利用对角化技巧和逐步逼近法证明解的存在 ,并给出解的直到 O(εN + 1 )的渐近展开式 .

关键词：积分微分方程组边值问题奇异摄动

Singularly Perturbed Solution for Nonlinear Equations of Fourth Order with Two Parameters

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Journal of Shanghai Jiaotong university(Science) 2008年第4期13卷 495-498页

作者：陈丽华莫嘉琪刘树德 Department of Mathematics and Computer Science Fuqing Branch of Fujian Normal University Department of Mathematics Anhui Normal Univeristy

A class of singularly perturbed boundary value problem for nonlinear equation of fourth order with two parameters is considered. Under suitable conditions, the existence and asymptotic behavior of solution for boundar... 详细信息

关键词： nonlinear two parameters singular perturbation

An Enhanced RSA-based Partially Blind Signature

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An Enhanced RSA-based Partially Blind Signature

THE INTERIOR LAYER SOLUTION TO NONLOCAL REACTION DIFFUSION EQUATIONS

2010 International Conference on Computer and Communication Technologies in Agriculture Engineering (CCTAE 2010)

作者： Dejian Fang1 1Department of Mathematics and Computer Science fuqing Branch of Fujian Normal University fuqing 350300 China Na Wang1 1Department of Mathematics and Computer Science fuqing Branch of Fujian Normal University fuqing 350300 China Chenglian Liu1 2 2Information Security Group Royal Holloway University of London Egham TW20 0EX UK

Hwang et *** that the Chien et al.’s partially blind signature scheme based on RSA public cryptosystem could not meet the untraceability property of a blind *** this paper,we proposed an enhanced version of Chien et al.’s par-tially blind signature scheme based on *** enhancement eliminates the vulnerability of the original version to the trace attack.

关键词： Blind Signature Unlinkability Forgery Attack

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Annals of Differential Equations 2011年第4期27卷 434-439页

作者： Lihua Chen Dept.of Math.and Computer Science,fuqing Branch of Fujian Normal University,fuqing 350300,Fujian Jiaqi Mo Dept.of Math.,Anhui Normal University,Wuhu 241003,Anhui Faculty of Science,Huzhou Teacher College,Huzhou 313000,Zhejiang,

An initial boundary value problem of semilinear nonlocal reaction diffusion equations is *** some suitable conditions,using the asymptotic theory,the existence and asymptotic behavior of the interior layer solution to... 详细信息

关键词： interior layer boundary layer asymptotic solution