Results 31 to 40 of about 205,850 (297)

Horizontal Detection Range Estimation of Deep-Sea Acoustic Shadow Area Based on Vertical Phased Emission Array

Journal of Marine Science and Engineering
To scan the horizontal range of the deep-sea shadow zone with high accuracy and efficiency, enabling active target detection, a horizontal detection range estimation method based on phased sound focusing technology is presented.
Naibin Chen, Dayong Peng, Li Ma, Tao Hu, Haijun Liu, Haifeng Li   +5 more
doaj   +1 more source

A multi-task neural network for source localization in shallow-water environment with depth classification [PDF]

JASA Express Letters
Limited high-quality training data can cause overfitting and weak generalization in deep-learning-based source localization, leading to degraded performance in realistic environments. In this study, a multi-task neural network with a depth-classification
Jing Guo, Juan Zeng
doaj   +1 more source

Modeling Techniques for Underwater Acoustic Scattering and Propagation (Including 3D Effects)

Journal of Marine Science and Engineering, 2022
Almost three years have passed since the publication of the first Special Issue on three-dimensional underwater acoustics in 2019 [...]
Pavel Petrov, Boris Katsnelson, Zhenglin Li   +2 more
doaj   +1 more source

Design and Development of an acoustic positioning system for a cubic kilometre underwater neutrino telescope [PDF]

, 2012
En los últimos años los telescopios submarinos de neutrinos han cobrado una mayor importancia ya que consisten en un nuevo y único instrumento para observar el Universo.
Larosa ., Giuseppina
core   +1 more source

Underwater Acoustics and Cavitating Flow of Water Entry

, 2004
The fluid mechanics of water entry is studied through investigating the underwater acoustics and the supercavitation. Underwater acoustic signals in water entry are extensively measured at about 30 different positions by using a PVDF needle hydrophone ...
Kume M, 施红辉
core   +2 more sources

Analysis of Near-Capacity Iterative Decoding Schemes for Wireless Communication Using EXIT Charts

IEEE Access, 2020
This article proposes and compares the performance of three flexible and bandwidth efficient transceivers. The terminology of Over-Complete Mapping (OCM) is introduced in the first two schemes.
Nasru Minallah, Muhammad Fasih Uddin Butt, Imran Ullah Khan, Ishtiaque Ahmed, Khurram S. Khattak, Gang Qiao, Songzuo Liu   +6 more
doaj   +1 more source

The parametric propagation in underwater acoustics : experimental results [PDF]

, 2012
In underwater acoustics, detection of buried objects in sediments (cables, mines, . . . ) is a complex problem. Indeed, in order to ensure sufficient penetration depth in marine sediments, low frequencies have to be used, implying a low resolution.
BOUTTARD, Etienne, BOU MATAR, Olivier, Bouttard, E., LABAT, Valérie, CHONAVEL, Thierry, BOU MATAR, O., Labat, V.   +6 more
core  

Functional Differentiation of Type II and Type I Collagen Articular Models in Synovial Fluid Film Formation and Recombinant Equine Lubricin Retention

Advanced Functional Materials, EarlyView.
Collagen II coatings support the formation of synovial fluid nanofilms, while collagen I coatings do not. Both bind recombinant equine lubricin similarly. These findings may help explain articular cartilage surface joint dysfunction, inform biomaterial design for synovial joint repair, and expand on lubricin‐based osteoarthritis therapies.
Diego R. Jaramillo Pinto, Nicolas L. Mendoza, Syeda Tajin Ahmed, Yidan Wen, Lenka Vitkova, Spencer M. Witt, Kaleb A. Cutter, Ummay Honey, Matthew J. Paszek, Heidi L. Reesink, Lawrence J. Bonassar, Kevin De France, Roberto C. Andresen Eguiluz   +12 more
wiley   +1 more source

Sound absorbing properties of spiral metasurfaces inspired by micro-perforated plates

Theoretical and Applied Mechanics Letters, 2023
As a kind of classical low-frequency sound-absorbing material, the microperforated plate (MPP) has been widely used. Here, we inspired by the sound absorption mechanism of the MPP, a spiral metasurface (SM) is designed and the analytical solution of ...
Han Zhang, Pengxiang Hao, Huilan Wu, Zhenyuan Lin, Chengpeng Hao, Zhengpan Qi, Ning Hu   +6 more
doaj   +1 more source

Advances in Solution‐Processed Textile Triboelectric Nanogenerators: Ink Formation, Processing Strategies, Applications, and Challenges

Advanced Functional Materials, EarlyView.
Advanced ink systems for solution‐processed textile triboelectric nanogenerators are systematically summarized, spanning conductive, tribo‐negative, and tribo‐positive layers. By connecting ink chemistry, deposition methods, and device function, the present review reveals the key governing principles of solution development and highlights practical ...
Xinlong Sun, Stephen Beeby
wiley   +1 more source