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Kuo-Yuan Huang, Chih-Hsiung Chang, Young-Fo Chang, Jia-Wei Liu and Jer-Wei Chang
At present, there is no relevant research which explores possible lesions in ultrasound images that may exist in acoustic shadow; only a differential diagnosis can be made. This current work addresses the use of a reliable posterior restoration algorithm...
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Xin Qiao, Yoshikazu Kobayashi, Kenichi Oda and Katsuya Nakamura
This study developed a novel acoustic emission (AE) tomography algorithm for non-destructive testing (NDT) based on Lasso regression (LASSO). The conventional AE tomography method takes considerable measurement data to obtain the elastic velocity distrib...
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Céline Artero, Simon Marchetti, Eric Bauer, Christophe Viala, Claire Noël, Christopher C. Koenig, Rachel Berzins and Luis Lampert
Monitoring fish species populations in very turbid environments is challenging. Acoustic cameras allow work in very poor visibility but are often deployed as a fixed observation point, limiting the scope of the survey. A BlueView P900-130 acoustic camera...
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Nikolaos M. Papadakis and Georgios E. Stavroulakis
Noise barriers are a critical part of noise mitigation in urban and rural areas. In this study, a comparison of the insertion loss calculations of noise barriers via the Finite Element Method (FEM) and various formulae (Kurze?Anderson, ISO 9613-2/Tatge, ...
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Yasir Bashir, Nordiana Mohd Muztaza, Seyed Yaser Moussavi Alashloo, Syed Haroon Ali and Deva Prasad Ghosh
Fractured imaging is an important target for oil and gas exploration, as these images are heterogeneous and have contain low-impedance contrast, which indicate the complexity in a geological structure. These small-scale discontinuities, such as fractures...
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Peter Feldens, Alexander Darr, Agata Feldens and Franz Tauber
Boulders provide ecologically important hard grounds in shelf seas, and form protected habitats under the European Habitats Directive. Boulders on the seafloor can usually be recognized in backscatter mosaics due to a characteristic pattern of high backs...
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Paulo Henrique Trombetta Zannin, Eriberto Oliveira Do Nascimento, Elaine Carvalho Da Paz and Felipe Do Valle
In the modern world, noise pollution continues to be a major problem that impairs people’s health, and road traffic is a primary contributor to noise emissions. This article describes an environmental impact study of the noise generated by the reco...
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Duncan Tamsett, Jason McIlvenny and Andrew Watts
The backscatter response of a seabed to an incident sonar signal is dependent on the carrier wave frequency: i.e., the seabed is acoustically colourful. Colour is implemented in a prototype three-frequency sidescan sonar system deployed in the Pentland F...
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