Yan-ming Yang

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At present, the fundamental frequencies of signals of most commercially available acoustic alarms to deter small cetaceans are below 20 kHz, but it is not well ascertained whether higher frequencies have a deterrent effect on bottlenose dolphins (Tursiops truncatus). Two captive bottlenose dolphins housed in a floating pen were subjected to a continuous(More)
In this paper, we investigate nonlinear dynamic behaviors of a piezoelectric plate. By the methods of boundary integration and modal truncation, the partial differential equation governing the vibration of piezoelectric plates has been derived. The piezoelectric resonator is described as a parametrically excited nonlinear vibration system. The calculations(More)
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