Results 61 to 70 of about 72,624 (215)

Acoustic and Large Eddy Simulation studies of azimuthal modes in annular combustion chambers [PDF]

, 2012
The objectives of this paper are the description of azimuthal instability modes found in annular combus- tion chambers using two numerical tools: (1) Large Eddy Simulation (LES) methods and (2) acoustic solv- ers.
Wolf, Pierre, Staffelbach, Gabriel, Müller, Jens-Dominik, Gicquel, Laurent Y.M., Poinsot, Thierry   +4 more
core   +1 more source

Joint Representation and Recognition for Ship-Radiated Noise Based on Multimodal Deep Learning

Journal of Marine Science and Engineering, 2019
Ship recognition based on ship-radiated noise is one of the most important and challenging subjects in underwater acoustic signal processing. The recognition methods for ship-radiated noise recognition include traditional methods and deep learning (DL ...
Fei Yuan, Xiaoquan Ke, En Cheng
doaj   +1 more source

On the consistency of MODIS chlorophyll $a$ products in the northern South China Sea [PDF]

Biogeosciences, 2014
Chlorophyll a (Chl) concentrations derived from satellite measurements have been used in oceanographic research, for example to interpret eco-responses to environmental changes on global and regional scales.
S. L. Shang, Q. Dong, C. M. Hu, G. Lin, Y. H. Li, S. P. Shang   +5 more
doaj   +1 more source

Piezoelectric microsensors for semiochemical communication [PDF]

Chemical communication plays vital role in the mediating the behaviour of an organism living in the “odour space”. The mechanisms by which odours are generated and detected by the organism has evolved over thousands of years and thus the potential ...
Pathak, Shrey
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Trackline and point detection probabilities for acoustic surveys of Cuvier’s and Blainville’s beaked whales

, 2013
Acoustic survey methods can be used to estimate density and abundance using sounds produced by cetaceans and detected using hydrophones if the probability of detection can be estimated.
Gregory S. Schorr, Schorr, Greg S, de Soto, Natacha Aguilar, Natacha Aguilar de Soto, Tyack, Peter Lloyd, Barlow, Jay, Baird, Robin W, Jay Barlow, Russel D. Andrews, Andrews, Russ D, Mark P. Johnson, Robin W. Baird, Johnson, Mark J, Peter L. Tyack   +13 more
core   +1 more source

A simulator for swarm AUVs acoustic communication networking

, 2016
This paper presents a simulator for swarm operations designed to verify algorithms for a swarm of autonomous underwater robots (AUVs), specifically for constructing an underwater communication network with AUVs carrying acoustic communication devices ...
Li GN(李冠男), Wang X(王雪), Cui, Junhong, Xu HL(徐红丽), Liu, Jun   +4 more
core  

Effective beam pattern of the Blainville's beaked whale (Mesoplodon densirostris) and implications for passive acoustic monitoring

, 2013
This work was funded by two partners under the National Oceanographic Partnership Program: the Ocean Acoustics Program of the U.S. National Marine Fisheries Service, Office of Protected Resources, and the International Association of Oil and Gas ...
Johnson, Mark, David Moretti, Susan Jarvis, Peter Tyack, Moretti, David, Shaffer, Jessica Ward, Jessica Ward Shaffer, Jarvis, Susan, Tyack, Peter, Mark Johnson   +9 more
core   +1 more source

Underwater Acoustic Target Recognition Based on Supervised Feature-Separation Algorithm

Sensors, 2018
For the purpose of improving the accuracy of underwater acoustic target recognition with only a small number of labeled data, we proposed a novel recognition method, including 4 steps: pre-processing, pre-training, fine-tuning and recognition.
Xiaoquan Ke, Fei Yuan, En Cheng
doaj   +1 more source

Multi-AUVs formation control with acoustic communication constraints

, 2013
Formation control has received significant attention in the field of multiple autonomous underwater vehicles (AUVs) in recent years. There are many theoretical methods for solving this problem.
Li GN(李冠男), Xu HL(徐红丽)
core  

New consonantal acoustic parameters for forensic speaker comparison [PDF]

, 2012
This thesis examines acoustic parameters of five consonants /m, n, ŋ, l, s/ in two dialects of British English: Standard Southern British English and Leeds English.
Kavanagh, Colleen
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