The semi classical theory was utilized to establish the theoretical model of laser_induced dispersion optical filter (LIDOF).

With regard to semi-active control algorithm, a LQR semi-active method, which is based upon classical LQR theory, is put forward in seismie vibration control of Hefei TV tower.

This review first summarizes the general theory of spin diffusion in solids, including semi-classical description and the more exact approach, i.