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.

Performance of semantic differential method with an anchor stimulus in subjective sound quality evaluation;

This paper introduces some effective motivation methods in current enterprise management such as the emotion-based motivation, participation-based motivation, requirement-based motivation and target-based motivation.