检索结果-南通市图书馆

Solvability for Nonlinear Reaction Diffusion Equation with Boundary Perturbation

在线全文

学校读者我要写书评

暂无评论

Wuhan university Journal of Natural {1.s 2009年第6期14卷 481-483页

作者： chen lihua1, mo jiaqi2,3 1. department of mathematics and computer science, 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 Tong university, Shanghai 200240, china department of {1. and computer science Fujian Normal University Fuqing 350300 Fujian China department of {1. Anhui Normal University Wuhu 241000 Anhui China Division of Computational science E-Institutes of Shanghai Universities at Shanghai Jiao Tong University Shanghai 200240 China

In this paper, the nonlinear reaction diffusion equation with boundary perturbation is considered. Using discussions on solvability, the perturbed solution of original problem is obtained, and the uniform validity of ... 详细信息

关键词： perturbation nonlinear reaction diffusion equation solvability

A Class of Nonlinear Nonlocal Singularly Perturbed Reaction Diffusion Systems

在线全文

学校读者我要写书评

暂无评论

Wuhan university Journal of Natural {1.s 2008年第1期13卷 9-13页

作者： chen {1. department of {1. 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

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

在线全文

学校读者我要写书评

暂无评论

Journal of Shanghai Jiaotong university({1.) 2008年第4期13卷 495-498页

作者：陈丽华莫嘉琪刘树德 department of {1. and computer science Fuqing Branch of Fujian Normal University department of {1. 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

在线全文

学校读者我要写书评

暂无评论

一类奇摄动薄板弯曲问题的匹配渐近解

物理学报 2011年第10期60卷 1-6页

作者：徐惠陈丽华莫嘉琪安徽财经大学统计与应用数学学院蚌埠233030 福建师范大学福清分校数学与计算机科学系福清350300 安徽师范大学数学系芜湖241003

研究了一类薄板弯曲问题.对四阶奇摄动边值问题,引入伸长变量,构造边界附近的内层解,然后与外部解匹配.最后用合成展开式理论,得到了原问题的的渐近解.

关键词：薄板弯曲挠度渐近解

Geometric double-entity model for recognizing far-near relations of clusters

在线全文

学校读者我要写书评

暂无评论

science{1.(Information sciences) 2011年第10期54卷 2040-2050页

作者： WANG KaiJun ,YAN XuanHui & chen LiFei School of {1. and computer science,fujian normal university,Fuzhou 3501.8,china 1. School of mathematics and {1. science Fujian Normal University Fuzhou 350108 China

When solving many practical problems,we not only need sample labels given by a clustering algorithm,but also rely on the recognition of far-near relations of *** the difficult condition of many clusters in a high-dimensional data set,the clustering visualization methods based on dimension reductions usually produce the phenomena,e.g.,some clusters are overlapping,interlacing,or pushed away;as a result,the far-near relations of some clusters are displayed wrongly or cannot be *** existing inter-cluster distance methods cannot determine whether two clusters are far away or *** geometric double-entity model method (GDEM) is proposed to describe far-near relations of clusters,and the methods such as the relative border distance,absolute border distance and region dense degree are designed to measure far-near degrees between *** pays attention to both the absolute distance between nearest sample sets and the dense degrees of border regions of two clusters,and it is able to uncover accurately far-near relations of clusters in a high-dimensional space,especially under the difficult condition mentioned *** experimental results on four real data sets show that the proposed method can effectively recognize far-near relations of clusters,while the conventional methods cannot.

关键词： geometric double-entity model far-near relations of clusters distance between clusters partitional clustering algorithms

THE INTERIOR LAYER SOLUTION TO NONLOCAL REACTION DIFFUSION EQUATIONS

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

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

An Enhanced RSA-based Partially Blind Signature

在线全文

学校读者我要写书评

暂无评论

An Enhanced RSA-based Partially Blind Signature

THE CORNER LAYER SOLUTION TO ROBIN PROBLEM FOR REACTION DIFFUSION EQUATION

201. International Conference on computer and Communication Technologies in Agriculture Engineering (CCTAE 201.)

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

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Annals of Differential Equations 2012年第2期28卷 132-136页

作者： lihua chen (Dept. of Math. and computer science, fuqing branch of fujian normal university, fuqing 350300, fujian) Zhaohui Wen (Institute of Applied Math., School of Statistics and Applied mathematics, Anhui university of Finance and Economics, Bengbu 233030, Anhui) cheng Ouyang (Faculty of science, Huzhou Teacher College, Huzhou 313000, Zhejiang) jiaqi mo (Dept. of Math., Anhui normal university, Wuhu 241003, Anhui)

A class of Robin boundary value problem for reaction diffusion equation is considered. Under suitable conditions, using the theory of differential inequalities the existence and asymptotic behavior of the corner layer... 详细信息

关键词： corner layer asymptotic solution Robin problem

Perturbed Solving Method for Interdecadal Sea-air Oscillator model

在线全文

学校读者我要写书评

暂无评论

Chinese Geographical science 2012年第1期22卷 42-47页

作者： mo {1. LIN Yihua LIN Wantao chen lihua department of {1. Anhui Normal University Wuhu 241003 China Division of Computational science E-Institutes of Shanghai Universities at Shanghai Jiaotong University Shanghai 200240 China State Key Laboratory of Numerical modeling for Atmospheric sciencens and Geophysical Fluid Dynamic Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China department of {1. and computer science Fuqing Branch of Fujian Normal University Fuqing 350300 China

A coupled system of the interdecadal sea-air oscillator model is studied. The E1.Nifio-southem oscillation （ENSO） atmospheric physics oscillation is an abnormal phenomenon involved in the tropical Pacific ocean-atmosphere interactions. The oscillator model is involved with the variations of both the eastern and western Pacific anomaly pat- terns. This paper proposes an ENSO atmospheric physics model using a method of the perturbation theory. The aim is to create an asymptotic solving method for the ENSO model. Employing the perturbed method, the asymptotic solution of corresponding problem is obtained, and the asymptotic behaviour of the solution is studied. Thus we can obtain the prognoses of the sea surface temperature anomaly and related physical quantities.

关键词： nonlinear equation perturbation E1.Nifio-southern oscillator model interdecadal sea-air oscillator