In this paper, the effectiveness of shockwave attenuation and flame extinction has been experimentally studied using selfdeveloped active explosion suppressor in largscale test duct.

Performance of multi-innovation identification for attenuating excitation of stochastic systems;

Convergence of least mean squares algorithm under attenuating excitation conditions;

Mean square convergence of hierarchical least square identification under the attenuating excitation;

The special experimental equipment was designed and made based on the study on the properties of laser attenuation in electrolyte,and drilling experiments on the thin stainless steel were tested with the equipment.

It offers some determinate method of the attenuation factor.

In this paper a measurement method for attenuation factors of the vibration of the thin-shell structures is proposed,in which the acoustic measurement in the sound field near the structure is applied instead of the vibration measurement on the radiating surface.

Basec on simulating human brain to be remember by the part and that associating the whole characteristic as the foundation,and by inducting the associative memory attenuation factor,the neutral network structure and the learn arithmetic were developed apply in the system of fault diagnose in time.