Ocean waste that continues moving in the water has been a problem until now. This stimulated marine debris cleaning technology to emerge. research sought evaluate effectiveness of collection using monohull and catamaran fitted with forward conveyor. The Reynolds Average Navier Stokes (RANS)-based numerical simulation is used predict flow pattern characteristics, velocity contour, wave pattern, ...

Continuing arguments presented [1] or announced [2][3] in Complex Systems, zero-divisor (ZD) foundations for scale-free networks (evinced, in particular, in the “fractality” of the Internet) are decentralized. Spandrels – quartets of ZD-free or “hidden” box-kite-like structures (HBK’s) in the 2N+1-ions – are “exploded” from (and uniquely linked to) each standard box-kite in the 2N-ions, N ≥ 4. ...

A nonlinear time domain seakeeping analysis has been performed for high-speed displacement hulls advancing in head seas with regular waves. An hybrid approach has been employed, solving the unsteady hydrodynamic problem in the frequency domain and the equations of motion in the time domain. A three dimensional Rankine panel method has been used in order to solve the hydrodynamic boundary value ...