Results 141 to 150 of about 2,103,194 (320)
Reduction of JT8D powered aircraft noise by engine refanning [PDF]
The technical feasibility is described of substantially reducing the noise levels of existing JT8D powered aircraft by retrofitting the existing fleet with quieter refan engines and new acoustically treated nacelles.
Medeiros, A. A., Stitt, L. E.
core +1 more source
DuckNet: an open‐source deep learning tool for waterfowl species identification in UAV imagery
Remote Sensing in Ecology and Conservation, EarlyView.Using drones with thermal‐RGB sensors and a deep learning model (RetinaNet with ResNet‐50), we surveyed non‐breeding waterfowl across restored wetlands in the Mississippi Alluvial Valley. Our model, DuckNet, achieved high accuracy and offers an open‐source, customizable tool for automated waterfowl detection to support conservation monitoring ...
Zack Loken +4 more
wiley +1 more source
Interior noise levels of two propeller-driven light aircraft [PDF]
The relationships between aircraft operating conditions and interior noise and the degree to which ground testing can be used in lieu of flight testing for performing interior noise research were studied.
Catherines, J. J., Mayes, W. H.
core +1 more source
Spectral characterization of plant diversity in a biodiversity‐enriched oil palm plantation
Remote Sensing in Ecology and Conservation, EarlyView.How well can airborne imaging spectroscopy detect plant diversity in vertically complex agroforestry systems? We tested this in a biodiversity‐enriched oil palm plantation in Sumatra, Indonesia, using high‐resolution hyperspectral data. We calculated spectral alpha and beta diversity and compared them to field‐based plant diversity.
Vannesa Montoya‐Sánchez +10 more
wiley +1 more source
Communications Earth & EnvironmentA growing body of research has highlighted the major contribution of aviation non-CO2 emissions and effects to anthropogenic climate change. Regulation of these emissions, for example in the EU Emissions Trading System, requires the use of a climate ...
Liam Megill, Kathrin Deck, Volker Grewe
doaj +1 more source
Advanced subsonic transport approach noise: The relative contribution of airframe noise [PDF]
With current engine technology, airframe noise is a contributing source for large commercial aircraft on approach, but not the major contributor. With the promise of much quieter jet engines with the planned new generation of high-by-pass turbofan ...
Garber, Donald P. +1 more
core +1 more source
Ground‐truthing of satellite imagery to assess seabird colony size: A test using Adélie penguins
Remote Sensing in Ecology and Conservation, EarlyView.Adélie penguin colony size can be estimated from space using very high‐resolution (VHR; 0.3–0.6 m resolution) satellite imagery due to the contrast between their guano stain and the surrounding terrain. Our study assessed the utility of VHR imagery for making indirect assessments of changes in colony size.
Alexandra J. Strang +9 more
wiley +1 more source
Effects of Aircraft Noise on Sleep: Federal Aviation Administration National Sleep Study Protocol. [PDF]
Int J Environ Res Public Health, 2023 Basner M +17 more
europepmc +1 more source
Noise characteristics of upper surface blown configurations: Analytical Studies [PDF]
Noise and flow results of upper surface blown configurations were analyzed. The dominant noise source mechanisms were identified from experimental data.
Pennock, A. P. +3 more
core +1 more source
Remote Sensing in Ecology and Conservation, EarlyView.Targeted conservation measures are contingent on robust knowledge of spatio‐temporal animal distribution in areas of interest. We explore unmanned aerial vehicle (UAV) transect monitoring as a novel method for standardized digital aerial surveys of marine megafauna by investigating the fine‐resolution spatio‐temporal distribution of harbour porpoises ...
Dinah Hartmann +2 more
wiley +1 more source