Results 31 to 40 of about 158,615 (263)
Mathematical Model of the On-Board Antenna of Reentry Spacecraft Taking into Account Surface Waves
Известия высших учебных заведений России: Радиоэлектроника, 2022 Introduction. The onboard antennas of the returned hypersonic aircraft are weakly directional, which is achieved by radiation from the open end of the waveguide. When passing through dense layers of the atmosphere, they are exposed to aerodynamic heating,
V. F. Mikhailov, I. V. Mazhnik
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Journal of Fluid Mechanics, 1973 Small amplitude forced horizontal or vertical oscillations of a container of liquid with a free surface may give rise to motions in the liquid on a scale much greater than the forcing amplitude. Three such situations are analysed and, in those cases where the response is still small compared with the dimensions of the container, explicit asymptotic ...
Ockendon, J, Ockendon, H
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Surface waves and surface wave devices in atmospheric acoustics [PDF]
The Journal of the Acoustical Society of America, 1990 Surface waves exist above porous grounds when the surface can influence the airborne particle velocity near the ground and reduce the phase velocity of sound waves in air at the surface, thereby trapping some of the energy to remain near the surface as the wave propagates. The experimental evidence for the existence of an acoustic surface wave has been
G. A. Daigle, T. F. W. Embleton
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Fractal and Fractional, 2021 The present manuscript focuses on the study of surface wave propagation in a rotating coated viscoelastic half-space and its response to external forces comprised of the magnetic field and gravitational forces. A celebrated normal mode analysis procedure
Ali Mubaraki +2 more
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MUD VOLCANO SHUGO, DEPTH STRUCTURE AND MECHANISMS OF ACTIVITY [PDF]
Геологія і корисні копалини Світового океану, 2020 Most mud volcanoes are located along large tectonic zones within the Alpine and Central Asian folded regions, the Pacific mobile belt and rift regions of the Atlantic and Indian oceans.
L.E. Sobisevich, A.L. Sobisevich
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IEEE Access, 2020 We report the realization of strongly confined low-loss optical waveguiding at telecommunication wavelength by exploiting the hybridization of photonic modes guided by coupled dielectric mode and Bloch surface polaritons on the interface between one ...
Weijing Kong +3 more
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Temperature-controlled acoustic surface waves
New Journal of Physics, 2016 Conventional approaches to the control of acoustic waves propagating along boundaries between fluids and hard grooved surfaces are limited to the manipulation of surface geometry.
Norbert Cselyuszka +3 more
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A Deep Learning-Based Approach to Design Metasurfaces From Desired Far-Field Specifications
IEEE Open Journal of Antennas and Propagation, 2023 A deep learning neural network model in conjunction with a method to incorporate auxiliary surface waves is developed for the macroscopic design of transmitting metasurfaces.
Chen Niu +3 more
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Solitary-like Wave Dynamics in Thin Liquid Films over a Vibrated Inclined Plane
Applied Sciences, 2023 Solitary-like surface waves that originate from the spatio-temporal evolution of falling liquid films have been the subject of theoretical and experimental research due to their unique properties that are not readily observed in other physical systems ...
Ivan S. Maksymov, Andrey Pototsky
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Radio-Wave Propagation and Electromagnetic Surface Waves [PDF]
Proceedings of the National Academy of Sciences, 1947 A Discrepancy and Its Resolution. - The problem of the propagation of radio-waves along the surface of the (plane) earth was first treated in a celebrated paper by A. Sommerfeld (1909).(1) Let the (r, φ)-plane of a cylindric system of coordinates coincide with the plane of the earth surface and let the z-axis point vertically upward.
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