Results 11 to 20 of about 2,036,069 (311)

Real-Time Communication Support for Underwater Acoustic Sensor Networks

open access: yesSensors, 2017
Underwater sensor networks represent an important and promising field of research due to the large diversity of underwater ubiquitous applications that can be supported by these networks, e.g., systems that deliver tsunami and oil spill warnings, or ...
Rodrigo Santos   +6 more
doaj   +1 more source

Prediction Method of Underwater Acoustic Transmission Loss Based on Deep Belief Net Neural Network

open access: yesApplied Sciences, 2021
The prediction of underwater acoustic transmission loss in the sea plays a key role in generating situational awareness in complex naval battles and assisting underwater operations. However, the traditional classical underwater acoustic transmission loss
Yihao Zhao   +4 more
doaj   +1 more source

Research on acoustic conduction mechanism of underwater acoustic channel based on metamaterials

open access: yesAIP Advances, 2020
In underwater acoustic communication, there are problems of low transmission efficiency, severe loss, and inaccurate point-to-point transmission. To realize the efficient transmission of underwater acoustic communication based on finite element analysis,
Xinsa Zhao   +3 more
doaj   +1 more source

A MAC Protocol to Support Monitoring of Underwater Spaces

open access: yesSensors, 2016
Underwater sensor networks are becoming an important field of research, because of their everyday increasing application scope. Examples of their application areas are environmental and pollution monitoring (mainly oil spills), oceanographic data ...
Rodrigo Santos   +5 more
doaj   +1 more source

Finite Element Simulation Analysis of Acoustic Transmission Characteristics for Periodic Pipe String Channels

open access: yesCejing jishu, 2023
In the process of oil drilling, the acquisition and real-time transmission of downhole information is very important for the accurate evaluation of formation, reservoir description and development.
WANG Senliang   +5 more
doaj   +1 more source

Homogenization of the vibro–acoustic transmission on perforated plates [PDF]

open access: yesApplied Mathematics and Computation, 2019
This manuscript version is made available under the CC-BY-NC-ND 4.0 ...
Eduard Rohan, Vladimír Lukes
openaire   +5 more sources

Influences of bedding characteristics on the acoustic wave propagation characteristics of shales

open access: yesPetroleum, 2021
The acoustic response characteristics of shales were investigated by the acoustic transmission experiment, which is the basis of solving geological and engineering problems using the seismic or logging information during the process of the exploration ...
Jian Xiong   +4 more
doaj   +1 more source

Simulations and Experimental Investigations on the Acoustic Characterization of Centrifugal Pumps of Different Specific Speed

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2019
Subject of discussion are simulations and experimental investigations on the acoustic characterization of three single stage centrifugal pumps of different specific speed.
Christian Lehr   +3 more
doaj   +1 more source

Evaluation of the Effect of Uncertainties on the Acoustic Behavior of a Porous Material Located in a Duct Element Using the Monte Carlo Method [PDF]

open access: yesArchives of Acoustics, 2023
When studying porous materials, most acoustical and geometrical parameters can be affected by the presence of uncertainties, which can reduce the robustness of models and techniques using these parameters. Hence, there is a need to evaluate the effect of
Hanen Hannachi   +5 more
doaj   +1 more source

Acoustic Transmission Characteristics and Model Prediction of Upper and Lower Completion Pipe Strings for Test Production of Natural Gas Hydrate

open access: yesApplied Sciences
This study adopts numerical simulation methods to explore the acoustic transmission characteristics of pipe strings in the upper and lower completions of a monitoring system for test production of natural gas hydrate.
Benchong Xu   +5 more
doaj   +1 more source

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