On selection of insurance market model in china;

Based on managerial economics,it is pointed out that Chinese automobile insurance market model has developed from perfect monopoly to oligopoly.

Based on the analysis and comparison of two basic electricity market models—Net Pool and Gross Pool,this paper concluded that the latter one i s more suitable for provincial electricity market in China with its statu s taken into account.

To set up electric power market model is a key and difficult point to which government, expert and enterprise field pay great attention, especially after separation of generation from power grid, it is even more important and urgent to carry through strategic restructuring for power grid enterprise, on industry deregulation background.

Recovering the acoustic wave impedance coefficient from the incomplete far field pattern data

The far field pattern of the scattered wave is solved employing the relation between the far field and the scattered wave.

Aim To recover the impedance coefficient from the far field pattern of the scattered wave of the acoustic scattering problem with impedance boundary condition.