作者机构：
[Li Junfeng] Hunan City Univ, Dept Math & Comp Sci, Yiyang 413000, Peoples R China.
通讯机构：
[Li Junfeng] H;Hunan City Univ, Dept Math & Comp Sci, Yiyang 413000, Peoples R China.
关键词：
Bloch type space;boundedness;compactness;composition operator
摘要：
For all 0 > p, q > ∞, let Cφ, denote the composition operator from q-Bloch spaces β~P to little p-Bloch spaces β_0~p on the unit ball of C~n. In this article, necessary and sufficient conditions for Cφ to be a bounded or compact operator are given.
期刊：
Information Technology Journal,2010年9(2):274-281 ISSN：1812-5638
通讯作者：
Xiang, X.
作者机构：
[Zhang, Dafan] School of Computer and Communication, Hunan University, No. 252, Lushan South Road, Yuelu District, Changsha, 410082, China;Department of Mathematics and Computer, Hunan City University, Yiyang, 413000, China;[Qin, Jiaohua; Fu, Yuanyuan; Xiang, Xuyu] School of Computer and Communication, Hunan University, No. 252, Lushan South Road, Yuelu District, Changsha, 410082, China, Department of Mathematics and Computer, Hunan City University, Yiyang, 413000, China
通讯机构：
[Xiang, X.] S;School of Computer and Communication, No. 252, Lushan South Road, Yuelu District, Changsha, 410082, China
关键词：
Ant colony algorithm;Genetic algorithm;Local search;Multidimensional graph;Multiple Sequence Alignment;Planar graph
期刊：
2010 Second International Conference on Communication Systems, Networks and Applications,2010年2:220-223
作者机构：
[Jinpeng Tang] Department of Computer, Hunan University of International Economics, Changsha, China;[Zhuanzheng Zhao] Department of mathematics, Hunan City University, Yiyang, China
摘要：
The traditional Markov trees model used in image segmentation has several disadvantages, such as too much time and no convergence. Aiming at this disadvantage, a new image segmentation combining hidden Markov trees model with Bayesian approaches is proposed. Firstly, establish the label field update model according to the image grey distribution, then update the label field so that the convergence speed has been accelerated. It is shown that satisfactory segmentation is achieved.
摘要：
We consider a mathematical model which describes the frictional contact between a deformable body and a foundation. The process is quasistatic, the material is assumed to be viscoelastic with long memory and the frictional contact is modelled with subdifferential boundary conditions. The mechanical damage of the material is described by the damage function, which is modelled by a nonlinear partial differential equation. We derive the variational formulation of the problem, which is a coupled system of a hemivariational inequality and a parabolic equation. Then we prove the existence of a unique weak solution to the model. The proof is based on arguments of abstract stationary inclusion and a fixed point theorem.
