The twodimensional unsteady flow model is developed by coordinate transformation,alternating direction,staggered grid,linear recurrence,implicit scheme on the flood simulation in Daqing.

In this paper,time-dependent variable grid finite element method is combined with the alternating direction Galerkin-method to discuss the nonlinear hypobolic equation in 3-space variables.

By using alternating direction, the 3-dimensional problem is reduced to a family of single space Variable problems, the calculating work is simplified; by using Galerkin method, the high accuracy property is obtained.

For regions with complex geometric property,a structure-driven directional interpolation is proposed to restore information in.

264 by simply using weighted pixel value averaging(WPVA) or directional interpolation.

A projection-type alternating direction method for structured monotone variational inequality problems

In this paper, we study a self-adaptive alternating direction method for solving a class of asymmetric monotone variational inequalities.

The alternating direction methods for solving variational inequality problems needs to solve several subproblems,which are also variational inequalities.

Alternating-direction iterative techniques for solving the algebraic systems associated with mixed finite element methods for second order elliptic provlems are formulated.

Conventional multi-directional interpolation method sometimes may cause some inaccurate edges when using it to restore lost blocks in a picture,because of unrelated edge in correctly received blocks.

The simulation results show that compared with the classical algorithms based on block-matching principle or multi-directional interpolation,the proposed algorithm can improve the edge details and give a better quality of the recovered image.