Results 111 to 120 of about 4,731 (309)

Estudo e desenvolvimento de algoritmos de sonar ativo para o mapeamento de áreas submersas [PDF]

, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2015.Recentes avanços no cenário marítimo brasileiro - como a descoberta e exploração do pré-sal e a ...
Ristow, João Paulo
core  

Photothermal bubble: Dynamics, manipulation, and applications

Droplet, EarlyView.
As a versatile platform for bubble manipulation, photothermal techniques empower diverse operations: planar translation by scanning the laser spot, sustained periodic bouncing from competing thermal and hydrodynamic flows, and even guided 3D trajectories achieved by tailoring the heating configuration.
Man Hu, Feng Wang, Daosheng Deng
wiley   +1 more source

The effect of fluid loading on the generation of extraterrestrial sound

, 2008
In recent years increased attention has been paid to the potential uses of acoustics for extraterrestrial exploration. Acoustical instrumentation can be deployed in gas, liquid, or solid media for measurement. This report deals specifically with acoustic
Leighton, T.G.
core  

Analysis of the Impact of Flow on the Underwater Acoustic Channel

, 2021
In this thesis, different characteristics of the propagation channel in high-flow environments will be discussed. Specifically, the time-varying latency and relevant channel parameters will be analyzed, including the Doppler spread, the amplitude ...
MacDonald, Jeffrey
core  

A survey on terrain based navigation for AUVs [PDF]

, 2010
Terrain Based Navigation (TBN) is a method rootedto the early cruise missile navigation systems, when GPS wasnot yet available. For decades, TBN has been applied as acomplementary system to INS navigation for Unmanned AerialVehicles (UAV).
Petillot, Yvan, Wilson, P.A., Philip Wilson, Petillot, Yvan; id_orcid, Yvan Petillot, Wilson, P. A., Carreno, Sebastian, Ridao, Pere, Sebastian Carreno, Wilson, Philip, Pere Ridao   +10 more
core   +1 more source

Enhancing hydrogen evolution reaction by harnessing bubble dynamics regulation: Principles, methods, and outlook

Droplet, EarlyView.
Bubble dynamics pose critical bottlenecks to hydrogen evolution reaction efficiency, causing active site isolation, increased ohmic resistance, and concentration overpotential, especially at high current densities. This review comprehensively summarizes passive and active bubble manipulation strategies, elucidates their underlying principles, and ...
Ziwei Guo, Chunhui Zhang, Yunxun Liu, Yi Han, Jinghang Pan, Lingyao Zhang, Chuanqi Nie, Yuejing Zhao, Kesong Liu, Cunming Yu, Lei Jiang   +10 more
wiley   +1 more source

IARA: An Underwater Acoustic Database

IEEE Access
Recent advancements in artificial intelligence have been driven by the availability of diverse and well-structured public databases; however public databases for passive sonar classification remain scarce. To address this gap, this paper presents a new public underwater acoustic labeled database collected during the Santos Basin Soundscape Monitoring ...
Fabio O. B. da Silva, Júlio de Castro Vargas Fernandes, William Soares-Filho, João Baptista de Oliveira e Souza Filho, Ângela Spengler, Natanael Nunes de Moura Junior   +5 more
openaire   +2 more sources

Studies into the detection of buried objects (particularly optical fibres) in saturated sediment. Part 3: experimental investigation of acoustic penetration of saturated sediment

, 2007
This report is the third in a series of five, designed to investigate the detection oftargets buried in saturated sediment, primarily through acoustical or acoustics-relatedmethods.
Leighton, T.G., Evans, R.C.P.
core  

Dolphin-inspired target detection for sonar and radar

, 2014
Gas bubbles in the ocean are produced by breaking waves, rainfall, methane seeps, exsolution, and a range of biological processes including decomposition, photosynthesis, respiration and digestion.
Leighton, T.G., Leighton, T., White, P., White, P.R.   +3 more
core   +1 more source

Dynamics of cavitation bubbles in a liquid layer

Droplet, EarlyView.
The dynamics of cavitation bubbles within a liquid layer is studied experimentally. Due to the combined effect of the rigid wall and free surface, the bubbles exhibit a significant downward migration. The confinement effect of the rigid wall significantly affects the bubble's collapse morphology, leading to different post‐collapse phenomena of free ...
Jinzhao Liu, Tianyou Wang, Zhizhao Che
wiley   +1 more source