Abstract In severe wave conditions, the ship propulsion system is loaded with high fluctuations due to external disturbances. The highly fluctuating loads enforce radical changes in main engine torque, which turn demands variation of fuel rate injected into cylinders if a constant rotational speed strategy applied. Therefore, temperature gases varies large extent during combustion process cylin...

pistacia atlantica is the most important tree species for the economy of many rural areas in west of iran, but no effort has been made for the genetic improvement of this species. the aim of this investigation was to study the genetic variation and inheritance of early growth traits in p. atlantica. for this purpose, three wild pistachio populations comprising 60 randomly selected adult trees f...

Based on the acousto-optic effect and Gladstone–Dale relationship, relationship about variations of refractive index isotropic homogeneous atmospheric medium inhomogeneous with sound pressure under disturbance plane field is derived. Models for transmission light waves Laguerre-Gaussian beams through disturbed by acoustic are established. The results show that distribution exhibits a periodic a...

The objective of this paper is to prove that the sea wave height not a Gaussian process. This contrary common belief, as generally considered With aim in mind, an empirical study buoys along US coast at random day pursued. analysis differs from those literature we Gaussianity process whole and just its one-dimensional marginal. done by making use projections variety tests are powerful against d...

We present a multi-band Fourier domain approach to synthesizing and rendering deep-water ocean waves entirely on the graphics processor. Our technique begins by using graphics hardware to generate and animate a Fourier domain spectrum of ocean water. We subsequently use the graphics hardware to apply an IFFT to transform the spectrum into a realistic height map of ocean water in the spatial dom...

It is a complicated task to right capsized ship on the sea bottom because of wave load. Based influence waves stability and mechanical action, this paper constructs force calculation model by airy theory, righting models grounded are obtained. The uprighting process simulated GHS software. In process, solved, effect parameters action studied. result shows that when phase at its origin, can be e...

this paper presents an experimental study the influence of wave parameter on the damage of reshaping seawall, model tests have been performed in several water level conditions. the experiments of physical modeling of this research have been done in the flume of the soil conservation and watershed management research institute (scwmri). the waves applied to the structure model are irregular and ...