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101
EBG Size Reduction for Low Permittivity Substrates
Published 2012-01-01“…The study of the required number of elements and their dimensions is carried out in order to suppress the surface wave propagation modes and consequently to reduce the mutual coupling between radiating elements in low-permittivity substrates. …”
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102
Azimuthally Anisotropic 3D Velocity Continuation
Published 2011-01-01“…This description turns out to be of a wave propagation process, in which images change along a velocity axis. …”
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103
Optimized Weighted Essentially Nonoscillatory Third-Order Schemes for Hyperbolic Conservation Laws
Published 2013-01-01“…We carry out some numerical experiments dealing with wave propagation based on the 1D linear advection and 1D Burger’s equation at some different cfl numbers and show that the optimal cfl does indeed cause less dispersion, less dissipation, and lower L1 errors. …”
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104
Impact of Ship Motions on Maritime Radio Links
Published 2012-01-01“…This tool includes a deterministic two-ray model for radio-wave propagation over the sea surface. The geometrical 3D engine for ship motions has the advantage to be compatible with any propagation model and antenna structure.…”
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105
Finite-Difference Time Domain Techniques Applied to Electromagnetic Wave Interactions with Inhomogeneous Plasma Structures
Published 2018-01-01“…Motivated by the emerging field of plasma antennas, electromagnetic wave propagation in and scattering by inhomogeneous plasma structures are studied through finite-difference time domain (FDTD) techniques. …”
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106
Spatial localization and diffusion of Dirac particles and waves induced by random temporal medium variations
Published 2025-01-01“…Abstract Wave propagation in time-varying media has attracted significant attention for its innovative potential to control wave-matter interactions and to develop versatile active materials. …”
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107
Vibration Characteristics of Subway Tunnel Structure in Viscous Soil Medium
Published 2021-01-01“…Based on research on subway tunnels in a viscous soil medium, this paper establishes the vibration equation of a tunnel structure by using the theory of moderately thick cylindrical shells and the method of wave propagation. The soil around the tunnel is represented in simplified form as an isotropic viscoelastic medium to obtain the equation of motion of the soil, and the vibration control equation of the tunnel under the influence of viscous soil is obtained by coupling. …”
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108
Modified Finite Difference Schemes on Uniform Grids for Simulations of the Helmholtz Equation at Any Wave Number
Published 2014-01-01“…All of these modified finite difference approximations provide exact solutions at the nodes of the uniform grid for the second derivative present in the Helmholtz equation and the first derivative in the radiation boundary conditions for wave propagation. The most important feature of the modified schemes is that they work for large as well as low wave numbers, without the common requirement of a very fine mesh size. …”
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109
Effects of Concrete on Propagation Characteristics of Guided Wave in Steel Bar Embedded in Concrete
Published 2014-01-01“…In this paper, dispersion equations of longitudinal wave propagation in reinforced concrete member are investigated for the purpose of monitoring steels embedded in concrete. …”
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110
Track-Before-Detect Procedures in AM Radio-Based Passive Radar
Published 2021-01-01“…Two types of linear equations according to the simplified radio wave propagation model are formulated, which is the key point of the proposed method. …”
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111
An Efficient Semianalytical Modal Analysis of Rectangular Waveguides Containing Metamaterials with Graded Inhomogeneity
Published 2021-01-01“…Below-cutoff backward wave propagation is observed in waveguides filled with graded refractive-index metamaterials, which provides a new approach for waveguide miniaturization.…”
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112
Reliability Analysis of Damaged Beam Spectral Element with Parameter Uncertainties
Published 2015-01-01“…The paper examines the influence of uncertainty parameters on the wave propagation responses at high frequencies for a damaged beam structure in the structural reliability context. …”
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113
On Semianalytical Study of Fractional-Order Kawahara Partial Differential Equation with the Homotopy Perturbation Method
Published 2021-01-01“…We next triggered different parametric effects (such as x, t, and so on) on the structure of the solitary wave propagation, demonstrating that the breadth and amplitude of the solitary wave potential may alter when these parameters are changed. …”
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114
The THz Spectrum of Density Fluctuations of Water: The Viscoelastic Regime
Published 2015-01-01“…This specifically involves some solid-like features such as the onset of shear wave propagation, a sound velocity surprisingly similar to the one of ice, and an anomalously low sound absorption coefficient. …”
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115
Parabolic Equation Modeling of Propagation over Terrain Using Digital Elevation Model
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116
Metasurface-Cladded Waveguide Filled With Magnetized Plasma
Published 2025-01-01“…This paper analyses electromagnetic (EM) wave propagation within a metasurface-cladded waveguide filled with magnetized plasma. …”
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117
Nondestructive Testing of Advanced Concrete Structure during Lifetime
Published 2015-01-01“…The impact echo method is based on physical laws of elastic stress wave propagation in solids generated by mechanical impulse. …”
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118
Nondestructive Measurement of Momentum Transfer Collision Frequency for Low Temperature Combustion Plasma
Published 2014-01-01“…Accurately measured momentum transfer collision frequency and electron density for fire plasma enable correct simulation of electromagnetic wave propagation in the medium. The simulation is essential for designing high-performance systems suitable for the environment. …”
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119
Free and Forced Vibrations of Periodic Multispan Beams
Published 1994-01-01“…In this study, the following two topics are considered for uniform multispan beams of both finite and infinite lengths with rigid transversal and elastic rotational constraints at each support: (a) free vibration and the associated frequencies and mode shapes; (b) forced vibration under a convected harmonic loading. The concept of wave propagation in periodic structures of Brillouin is utilized to investigate the wave motion at periodic supports of a multispan beam. …”
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120
Feasibility Study on Crack Detection of Pipelines Using Piezoceramic Transducers
Published 2013-10-01“…The crack in the stress wave propagation path can be regarded as a stress relief, which reduces the received energy by the sensors. …”
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