Results 1 to 10 of about 850,913 (183)

A diatomic elastic metamaterial for tunable asymmetric wave transmission in multiple frequency bands [PDF]

open access: yesScientific Reports, 2017
Unidirectional/asymmetric transmission of acoustic/elastic waves has recently been realized by linear structures. Research related to unidirectionality of wave propagation has received intense attention due to potentially transformative and unique wave ...
Bing Li, Sagr Alamri, K. T. Tan
doaj   +2 more sources

Gravity wave transmission diagram [PDF]

open access: yesAnnales Geophysicae, 2015
A new method of obtaining power spectral distribution of gravity waves as a function of ground-based horizontal phase speed and propagation direction from airglow observations has recently been proposed.
Y. Tomikawa, Y. Tomikawa
doaj   +3 more sources

Bamboo Fences as a Nature-Based Measure for Coastal Wetland Protection in Vietnam

open access: yesFrontiers in Marine Science, 2021
Climate change has induced sea-level rise and a high intensity of storms, which create high nearshore waves. These caused severe mangrove degradation and erosion along the coastal wetland areas in the Mekong Delta in Vietnam.
Cong Mai Van   +3 more
doaj   +1 more source

Coastal Defences on Low-Lying Reef Flats: A Laboratory Study of Seawall Shape and Position

open access: yesJournal of Marine Science and Engineering, 2022
The present study reports on a series of laboratory experiments aiming to understand and to optimize the deployment of seawall defences over low-lying coral reef flats.
Goélanne Rossignol, Damien Sous
doaj   +1 more source

Decoupling Technique Using Ferrite-Film Loading for 5G MIMO Applications

open access: yesInternational Journal of Antennas and Propagation, 2022
Decreasing the mutual coupling between multiple-input-multiple-output (MIMO) antenna elements requires the selection of an appropriate decoupling technique without changing the geometry or operating frequency of the antenna.
Di Wu   +8 more
doaj   +1 more source

Wave Control by Tide-Adapting Submerged Breakwater [PDF]

open access: yes한국해양공학회지, 2019
A submerged breakwater is a coastal structure built under water with excellent landscape. The depth of the crest of the breakwater should be maintained at more than a certain level in order for the submerged breakwater to control waves properly.
Woo-Dong Lee   +2 more
doaj   +1 more source

Numerical Study of Bamboo Breakwater for Wave Reduction

open access: yesFluids, 2021
Flood inundation and shoreline erosion have long occurred in Sayung, Demak area, the northern coast of Central Java Province, Indonesia. The people of Sayung planted mangroves to reduce the flood inundation and shoreline erosion in that area.
Haryo Dwito Armono   +3 more
doaj   +1 more source

Effects of bottom roughness on wave transmission across a submerged reef

open access: yesFrontiers in Marine Science, 2023
This paper presents a laboratory study to investigate the effects of bottom roughness on wave transmission across a submerged coral reef that has a steep fore-reef slope.
Quang Cuong Dinh   +3 more
doaj   +1 more source

Wave and Hydrodynamic Processes in the Vicinity of a Rubble-Mound, Permeable, Zero-Freeboard Breakwater

open access: yesJournal of Marine Science and Engineering, 2020
A numerical study for the effect of crest width, breaking parameter, and trunk permeability on hydrodynamics and flow behavior in the vicinity of rubble-mound, permeable, zero-freeboard breakwaters (ZFBs) is presented. The modified two-dimensional Navier-
Theofano I. Koutrouveli   +1 more
doaj   +1 more source

Prediction of Wave Transmission Characteristics of Low Crested Structures Using Artificial Neural Network

open access: yes한국해양공학회지, 2022
Recently around the world, coastal erosion is paying attention as a social issue. Various constructions using low-crested and submerged structures are being performed to deal with the problems. In addition, a prediction study was researched using machine
Taeyoon Kim   +5 more
doaj   +1 more source

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