Results 101 to 110 of about 228,033 (349)

Comparing convolutional neural network and random forest for benthic habitat mapping in Apollo Marine Park

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
A comparison of Convolutional Neural Network (CNN) and Random Forest (RF) model predictions of benthic habitats within Apollo Marine Park. The CNN (left) and RF (right) classification maps show the spatial distribution of three habitat types: high energy circalittoral rock with seabed‐covering sponges, low complexity circalittoral rock with non‐crowded
Henry Simmons   +6 more
wiley   +1 more source

Method for environmental protection of fish from going into water discharge facilities [PDF]

open access: yesCaspian Journal of Environmental Sciences
Spillway structures of hydroelectric power plants, dams, and other large hydroelectric facilities are characterized by high volumes of discharged water. Moreover, the discharge can also go in a volley way - when a large volume of water mass is passed in ...
Artur Tumenov   +4 more
doaj   +1 more source

Rethinking the Patch Test for Phase Measuring Bathymetric Sonars [PDF]

open access: yes, 2011
While conducting hydrographic survey operations in the Florida Keys, NOAA Ship Thomas Jefferson served as a test platform for the initial operational implementation of an L-3 Klein HydroChart 5000 Swath Bathymetry Sonar System1 , a hull-mounted phase ...
Beaudoin, Jonathan   +3 more
core   +1 more source

Incorporating environmental DNA metabarcoding for improved benthic biodiversity and habitat mapping

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Seafloor imagery is commonly used to collect information about the distribution of benthic organisms in order to generate habitat and biodiversity maps. Recent advances in genomics (e.g., environmental DNA; eDNA) show potential to complement video surveys for habitat mapping, but there have been few examples testing this.
Rylan J. Command   +8 more
wiley   +1 more source

sonar

open access: yes, 2011
[ES] Definición del término Sonar en el diccionario Dicter. [EN] Definition of the word Sonar in the dictionary Dicter.
openaire   +3 more sources

Changes in dive behaviour during naval sonar exposure in killer whales, long-finned pilot whales and sperm whales

open access: yesFrontiers in Physiology, 2012
Anthropogenic underwater sound in the environment might potentially affect the behavior of marine mammals enough to have an impact on their reproduction and survival.
Lise Doksæter Sivle   +7 more
doaj   +1 more source

Obstacle detection algorithm of low computational cost for Guanay II AUV [PDF]

open access: yes, 2016
Obstacle detection is one of the most important stages in the obstacle avoidance system. This work is focused to explain the operation of a designed and implemented for the overall detection of objects with low computational cost strategy.
Galarza Bogotá, Cesar Mauricio   +2 more
core   +2 more sources

From snapshots to continuous estimates: Augmenting citizen science with computer vision for fish monitoring

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
This study presents an end‐to‐end computer‐vision pipeline for monitoring fish migration using underwater video. We integrate field camera deployment, annotation, model training and automated in‐season counting to generate continuous, high‐resolution data on river herring spawning migration.
Zhongqi Chen   +7 more
wiley   +1 more source

Methods for separating the noise produced by the wheels and track during a train pass-by

open access: yesRailway Engineering Science
Rolling noise is produced by vibration of the wheels and track, induced by their combined surface roughness. It is important to know the relative contributions of the different sources, as this affects noise control strategies as well as acceptance ...
David Thompson   +6 more
doaj   +1 more source

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