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Radiated noise is an important index for evaluating the operational performance and ability of survive of submarines, and also the main factor to destroy the acoustic stealth performance. Prediction of the vibration and sound radiation of underwater structures is an important basis of vibration and noise reduction designing. Prediction of the vibration and sound radiation of underwater structures is an important basis of vibration and noise reduction designing. Therefore, improving the computational efficiency of sound and vibration prediction of large underwater structures without losing...

At the Mogao Grottoes, a World Heritage site near Dunhuang city in Gansu Province, visitor numbers have increased inexorably since 1979 when the site opened. A national policy that identifies tourism as a pillar industry, along with pressure from local authorities and businesses to encourage more tourism, threatens to lead to an unsustainable situation for management, an unsafe and uncomfortable experience for visitors and irreparable damage to the fragile art of the cave temples for which the site is famous. In the context of the comprehensive visitor management plan developed for the Mogao...