The effects of the constant excitation on the local bifurcation of the periodic solutions in the 1:2 internal resonant systems were analyzed based on the singularity theory.

Research on the effects of unsteady excitation on enhancing performance of annular cascade;

The results have shown that reasonable unsteady excitation could increase the time-averaged performance of axial cascade.

A mathematical equation of submerged floating tunnel tether vibration under the effects of vortex and parametric excitation was presented to investigate the importance of its high-order vortex-induced lock-on vibration.

Consider the situation when the frequency of parametric excitation and forced excitation is double of natural frequency of yaw motion,the 1/2 sub-harmonic resonance yaw motions of ships are studied using nonlinear vibration theory.

Dynamic evolution is analyzed with parametric excitation, periodically time varying sound inductance is a key network parameter, and a modulator is firstly introduced and this paper suggestes that it can be regarded as a capable index of thermoacousitc engine.

Studies on the activation functions of BP algorithm;

The paper proposes a new kind of NARX network, which has trainable activation functions in addition to only trainable weights in the conventional NARX networks.

Previous learning algorithms, to our best knowledge, failed to take advantage of all three factors (weights, activation functions, topological structure) that influence the efficiency of such algorithms.