recently, data collection from seabed by means of underwater wireless sensor networks (uwsn) has attracted considerable attention. autonomous underwater vehicles (auvs) are increasingly used as uwsns in underwater missions. events and environmental parameters in underwater regions have a stochastic nature. the target area must be covered by sensors to observe and report events. a ‘topology cont...

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a novel mathematical model has been developed to aid the formulation of emulsion explosives. this mathematical model calculated heat of explosion, oxygen balance and raw material cost as a function of explosive ingredients, and the solution of the mathematical model was obtained by a ms excel program. the effects of the different content of nh4no3, nano3, h2o, and span-80 and composite fuel oil...

The pulsation of the bubbles resulting from underwater explosions can lead to severe damage structure ship’s hull, and even its sinking. To study mechanism a simplified hull girder (SHG) subjected near-field explosion bubble, Coupled Eulerian–Lagrangian (CEL) method based on verifications calculation accuracy was used simulate 11 SHG structures. sagging bend SHGs analyzed perspective plastic hi...