Results 171 to 180 of about 1,782,949 (343)

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  

Resource‐Aware Contrastive Scattering Meta‐Learning for Efficient Few‐Shot Acoustic Anomaly Detection

Advanced Intelligent Systems, EarlyView.
This paper introduces a resource‐aware Contrastive Scattering Meta‐Learning (CSML) framework for acoustic anomaly detection. By leveraging training‐free wavelet scattering and metric‐based meta‐learning, the model achieves competitive performance with only 50 K learnable parameters—a 98% reduction compared to state‐of‐the‐art frameworks—enabling ...
Rami Zewail, Bassem Mokhtar
wiley   +1 more source

Quantitative Residual Stress Analysis in Steel Structures Using EMAT Nonlinear Acoustics. [PDF]

Sensors (Basel)
Balasubramaniam K, Ortiz BN, Bejarano ÁP.   +2 more
europepmc   +1 more source

Nonlinear transient bubble oscillations

, 2002
The investigation considers issues associated with transient regime of nonlinear bubble oscillations. The nonlinear response of a gas bubble to a low frequency pumping wave results in parametrically-generated shape oscillations above a well-defined ...
Sosedko, E.V., Leighton, T.G., Maksimov, A.   +2 more
core  

Gate‐Align‐SED: Semi‐Supervised Sound Event Detection via Adaptive Feature Gating and Cross‐Task Alignment in Situation Awareness

Advanced Intelligent Systems, EarlyView.
Overview of the proposed Gate‐Align‐SED, including two stages of training: (1) Mean‐Teacher SSL Training; and (2) Enhancer Model Training. In complex real‐world environments such as disaster monitoring, effective sound event detection (SED) is often hindered by the presence of noise and limited labeled data.
Jieli Chen, Li‐Minn Ang, Chee Shen Lim, Kah Phooi Seng, Jeremy Smith   +4 more
wiley   +1 more source

Hysteretic self-oscillatory acoustic radiation with tunable orbital angular momentum. [PDF]

Sci Adv
Zhang L, Zou HY, Ge Y, Liu W, Sun HX, Chen F, Chen Q, Pan Y, Tong M, Hu Y, Han N, Wu B, Wu J, Yang Q, Yuan SQ, Chen H, Yang Y, Zhang S.   +17 more
europepmc   +1 more source

Interpreting How Neural Networks Infer Scatterer Geometry from Echolocation Echoes

Advanced Intelligent Systems, EarlyView.
Neural networks enable echolocation‐based shape classification but remain difficult to interpret due to their black‐box nature. This work presents a feature‐importance metric to uncover the echo regions driving decisions in shape‐specialized networks.
Ganesh U. Patil, Hyung‐Suk Kwon, Bogdan‐Ioan Popa   +2 more
wiley   +1 more source

Radial oscillation of an encapsulated bubble near a planar rigid wall under dual-frequency acoustic excitation in viscoelastic fluids. [PDF]

Ultrason Sonochem
Zang YC, Chen DC, Zhu XF, Wu DJ, Lin WJ.
europepmc   +1 more source

Segmented Therapeutic Delivery via Acoustic Microbubble Relay

Advanced Intelligent Systems, EarlyView.
An acoustically driven, modular segmented delivery system is presented to overcome mechanical limitations of conventional microcatheters. Oscillating microbubbles generate directional streaming that enables continuous, targeted transport across open, angled segments.
Lei Wang, Yiyang Tang, Yiqiang Wu, Xin Zhang, Tianshi Lyu, Zhen Hua, Tian‐Yun Huang   +6 more
wiley   +1 more source

Realizing Shor's algorithm with topological acoustic phase bits. [PDF]

Commun Eng
Kuk I, Djordjevic IB, Runge K, Gabitov IR, Deymier PA.   +4 more
europepmc   +1 more source