13 citations · 26 across the 10 of their papers we have counts for
10 papers
Validation of Theoretical Estimation Methods and Maximum Value Distribution Calculation for Parametric Roll Amplitude in Long-Crested Irregular Waves
Keiji Katsumura, Leo Dostal, Taiga Kono +3
Parametric rolling is a parametric excitation phenomenon caused by GM variation in waves. There are a lot of studies of the estimation the conditions, the occurrence, and the ampli…
Approximate probability density function for nonlinear surging in irregular following seas
Atsuo Maki, Yuuki Maruyama, Keiji Katsumura +1
The broaching that follows the surf-riding is a dangerous phenomenon that can lead to the capsizing of a vessel due to its violent yaw motion. Most of the previous studies on surf-…
Comparison of stochastic stability boundaries for parametrically forced systems with application to ship rolling motion
Atsuo Maki, Yuuki Maruyama, Yaliu Liu +1
Numerous accidents caused by parametric rolling have been reported on container ships and pure car carriers (PCCs). A number of theoretical studies have been performed to estimate…
Stochastic Assessment of Acceleration Probability Density Function for Parametric Rolling Using Moment Method
Yuuki Maruyama, Atsuo Maki, Leo Dostal +1
Container ships encounter large roll angles and high acceleration, and container loss remains a problem. This study proposes a method for calculating the probability density functi…
Application of Linear Filter and Moment Equation for Parametric Rolling in Irregular Longitudinal Waves
Yuuki Maruyama, Atsuo Maki, Leo Dostal +1
Parametric rolling is one of the dangerous dynamic phenomena. In order to discuss the safety of a vessel when a dangerous phenomenon occurs, it is important to estimate the probabi…
Localized stationary seismic waves predicted using a nonlinear gradient elasticity model
Leo Dostal, Marten Hollm, Andrei V. Metrikine +2
This paper aims at investigating the existence of localized stationary waves in the shallow subsurface whose constitutive behaviour is governed by the hyperbolic model, implying no…
Experimental Study on Reinforcement Learning-based Control of an Acrobot
Leo Dostal, Alexej Bespalko, Daniel A. Duecker
We present computational and experimental results on how artificial intelligence (AI) learns to control an Acrobot using reinforcement learning (RL). Thereby the experimental setup…
Soliton Collision in Random Seas
Hendrik Fischer, Marten Hollm, Leo Dostal
Although extreme or freak waves are repeatedly measured in the oceans, their origin is largely unknown. The interaction of different water waves is seen as one reason for their eme…
Study on the Behavior of Weakly Nonlinear Water Waves in the Presence of Random Wind Forcing
Leo Dostal, Marten Hollm, Edwin Kreuzer
Specific solutions of the nonlinear Schrödinger equation, such as the Peregrine breather, are considered to be prototypes of extreme or freak waves in the oceans. An important ques…
First Passage Time of Nonlinear Diffusion Processes with Singular Boundary Behavior
Leo Dostal, Navaratnam Sri Namachchivaya
New theorems for the moments of the first passage time of one dimensional nonlinear stochastic processes with an entrance boundary are formulated. This important class of one dimen…