The acoustic radiation resistance matrix is combined with the velocity vector on a vibration surface to predict the total sound power radiated from the structure.

By using the diagonal damping matrix, the damping role will be changed according to the relative modified amounts of the inversion parameters.

This study focuses on identifying damping matrixes of structures with appended dampers.

Correctly established the motion equations in order to solve the vibration problems of multi degree of freedom vibration system, and instituted properly the inertial matrix, stiffness matrix and damping matrix in terms of D ALEMBERT s principle and general theorems of dynamics.

The theory of second generation wavelet interpolation and a method of separating the relationship between close distance and far distance are adopted in this algorithm,through which elements of impedance matrix can be filled efficiently.

Numerical examples demonstrate that the presented method can greatly increase the accuracy of calculation of the self-interaction and near-interaction impedance matrix elements.

Adopting fault calculation model based on nodal impedance matrix and by means of preforming equivalent netw.

Through the combination of regularization theorem and damp matrix,an improved regularization method is brought forward to ameliorate the ill condition of normal equation.

To work out route guidance in gigantic traffic network,the traffic information forecasting method based on Artificial Neural Network is studied in-depth and the time-varied road weight matrixes are constructed,which solve the problem of limitation in traditional and static road weight.

We then accordingly modify the blocking matrix making use of the multistage decomposition structure of the MSWF,based on the correlation subtractive structure,to construct the space-time interference subspace.