... marine transportation pressure sensor convolution integral motion-free test frequency response function pressure distribution diffraction test kashiwagi power spectrum density function asia government dynamometer fbg pressure sensor japan government diffraction problem response...

... for wave prediction appear to have been based on the Fourier transform. Since the Fourier transform is not a time-developing process, the impulse response function may contribute significantly to the accuracy of the water waves prediction. By defining an adequate causal region with the impulse response...

... pressure distribution wavelength panel method rankine panel method long wavelength marine transportation input point impulse response function experiment kashiwagi ord response function estimation pressure data unsteady pressure distribution experimental result diffraction...

... constructed auto-regressive and moving average (ARMA) models of ship motions by approximation of the theoretical frequency response functions. These were based on the 2-Degree-of-Freedom (2-DOF) motion equations of heave and pitch modes, and the coupled longitudinal motions were considered. The obtained...

... installation methods. passive type dsf design variable envelope type dsf marine transportation active type dsf dsf deck support frame structure upstream oil & gas load condition boundary condition response function installation subsea system float-over installation stress level...

... ABSTRACT Temporal and spatial impulse response functions of water waves are mathematically shown and it is suggested how to use them in order to accurately predict progressive waves profile in real-time. Combination of temporal and spatial wave profiles enables avoiding the causality problem...

... of sea state 4, 5 and 6. Data of five repeated experiments are combined to make a sufficient number of encounter wave. These results are compared with those using the indirect method which uses the linear superposition of energy spectra of wave and response functions in regular waves INTRODUCTION...

... and output variables, and give fast predictions for any unknown design. The traditional sample point selection is based on the principle of uniform dispersion, for examples, the orthogonal design (GenichiTaguchi, 1987) and Latin hypercube sampling (Mckay, Beckman and Conover, 2000). The response functions...

..., in order to achieve in reasonable calculation times reliable results. The investigation has been supported by a wide measurement campaign by which it has been possible to make a validation of numerical results. response function vibration frequency transfer function frequency diesel engine...

... function it follows that the radiation frequency response function Hr is an hermitian function composed by a real and imaginary part. A complex function is called "Hermitian" when its complex conjugate is equal to the original function with the variable changed in sign. As a direct consequence, the real...

... problem for the actual application of on-board guidance systems to merchant vessels. estimation directional wave spectra marine transportation directional wave spectrum radar wave observation system wave observation system bayesian wave estimation frequency denote response function wave...

... The present study considers the nonlinear roll motion of containerships. The nonlinear wave excitation and restoring are applied for the ship motion, based on the assumption of weakly nonlinear ship motion. For the radiation component, an impulse response function (IRF) approach is applied...

... foundation countermeasure artificial intelligence forecast system tunnel upstream oil & gas gravel foundation oscillation current velocity response function operation Construction Techniques for Deep Water Immersed Tunnel in the Bosphorus Strait Kazunori Ito, Yukinobu Oda, Takahide Honda...

.... Example of ratio of heave / pitch amplitudes. 0 2 4 6 8 10 12 14 16 18 0 30 60 90 120 150 180 0.75 1 1.25 1.5 1.75 2 Wave Direction (deg) (z0/y0) Fig5. Example of ratio of heave / sway amplitudes. Response Function of the Ship In this method, at first, the response functions of ship motions of five...

... value of wind-only offset ( ) ( ) ( )V V VR dirV,V R ,V .p dirV,V= (21) Wave-only Response Given the definitions used for the wave response functions, the displacements of the FPSO in the X and Y directions (in axial and transverse directions) due to wave only, WX and WY , could be obtained...

... of the pitching motion was closely related to the non-linear restoring moment. Furthermore, it was confirmed that data of the main engine load index showed high skewness and two different types of second order response functions could be obtained with considering the pitching motion and the wave height...

... wave-maker wave group wave train response function experiment annihilation wave flume amplitude steepness physical experiment solid line tomita Creation and Annihilation of Extremely Steep Transient Wave Igor Ten, Hiroshi Tomita Ocean and Ice Engineering Department, National Maritime...

... hyperparameter cross spectra recursive bayesian modeling wave height artificial intelligence response function iterative calculation frequency directional wave spectra Recursive Bayesian Modeling for Online Estimation of Directional Wave Spectra Toshio Iseki and Daisuke Terada Chair of Marine Science...

... of Japan) in an area of the sea 1450m deep. This area is world famous because it is suffered from many strong typhoons every year and it is the best location to study waves. With this buoy system waves are reproduced using the measured heave of the buoy and its response function obtained from theoretical...

... frequency range was found to be from 0.17 to 0.33 Hz. Hosoda et al. (1993) have developed a ship-motion simulator to carry out many experiments under the same conditions. training ship head sea irregular sea response function vertical acceleration evaluation method seasickness amplitude...