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Vasilis Baltikas and Yannis N. Krestenitis
A numerical stochastic wave model was developed in this study based on the quasi-coherent theoretical framework proposed by Smit and Janssen in 2013. Subsequently, the model was implemented to reproduce and cross-confirm the findings of the quasi-coheren...
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Sergey Pereselkov, Venedikt Kuz?kin, Matthias Ehrhardt, Sergey Tkachenko, Pavel Rybyanets and Nikolay Ladykin
In this paper, we study the variations of holograms of a moving source in an inhomogeneous ocean waveguide. It is assumed that intense internal waves (internal solitons) are the reason for the inhomogeneities of the shallow water waveguide. The results o...
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Vladimir Khorev, Viktor Kazantsev and Alexander Hramov
A network model of epidemic spread accounting for inhomogeneous population district division is investigated. Motivated by the COVID-19 pandemic, we analyze the effects of infection development in the area, for example, of a city divided into several pop...
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Valery Bondur, Vladimir Dulov, Vladimir Kozub, Alexander Murynin, Maria Yurovskaya and Yury Yurovsky
A method for retrieving 2D spatial spectra of sea wave elevations and slopes from high resolution (about 1 m) satellite imagery has been developed that also allows for assessing sea wave angular distributions. A validation of the suggested method was car...
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Iro Malefaki and Kostas Belibassakis
Biomimetic flapping-foil thrusters can operate efficiently while offering desirable levels of thrust required for the propulsion of a small vessel or an Autonomous Underwater Vehicle (AUV). These systems have been studied both as main propulsion devices ...
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Jian Dai, Christos Stefanakos, Bernt J. Leira and Hagbart Skage Alsos
Floating bridges are suitable for connecting land parcels separated by wide and deep waterbodies. However, when the span of the crossing becomes very long, the water environment exhibits inhomogeneities which introduce difficulties to the modelling, anal...
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Andrey Lunkov, Danila Sidorov and Valery Petnikov
Three-Dimensional (3-D) sound propagation in a shallow-water waveguide with a constant depth and inhomogeneous bottom is studied through numerical simulations. As a model of inhomogeneity, a transitional region between an acoustically soft and hard botto...
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Jung-Eun Oh, Yeon S. Chang, Weon Mu Jeong, Ki Hyun Kim and Kyong Ho Ryu
Video monitoring systems (VMS) have been used for beach status observation but are not effective for examining detailed beach processes as they only measure changes to the shoreline and backshore. Here, we extracted longshore sediment transport (LST) fro...
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Oskar Bschorr and Hans-Joachim Raida
The wave equations for longitudinal and transverse waves being used in seismic calculations are based on the classical force/moment balance. Mathematically, these equations are 2nd order partial differential equations (PDE) and contain two solutions with...
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Gaofeng Sha
This study extends the second-order attenuation (SOA) model for elastic waves in texture-free inhomogeneous cubic polycrystalline materials with equiaxed grains to textured polycrystals with ellipsoidal grains of arbitrary crystal symmetry. In term of th...
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