Also a further study about the phenomena of seismic responses of reticulated shell under wave-passage excitations has made, and some beneficial conclusions are obtained.

Seismic responses of long-span single layer cylindrical reticulated shell under wave-passage excitations and uniform excitations are studied,and comparison is made.

By means of Kanai-Tajimi seismic model,displacement response,the power spectral density of displacement response and time-dependent variance of rotor s displacement response under random seismic and harmonic excitations for a rotor-bearing system with four degrees of freedom are analyse.

Considering the maximum steady response of the original structure under harmonic excitation of given frequency range as the objective function, the optimum side stiffness between the added structure and the original structure is obtained by golden section method.

The logic simplification method and one dimension binary edge search method are used for automatic SPICE waveform generation and logic parameter extraction of circuit cells.

An automatic waveform generation technique has been proposed,which is used for the SPICE simulation when extracting the logic parameters for a special sequential logic circuit.