Results 121 to 130 of about 180,632 (304)

Agenda toward the development of a rational noise descriptor system relevant to human annoyance by en route aircraft noise [PDF]

A rational, internationally consistent, noise descriptor system is needed to express existing and predicted en route aircraft noise levels in terms closely correlated to the annoyance perceived by people and physiologically identifiable in people, to ...
Garbell, Maurice A.
core   +1 more source

Sources, control, and effects of noise from aircraft propellers and rotors [PDF]

, 1981
Source noise predictions are compared with measurements for conventional low-speed propellers, for new high speed propellers (propfans), and for a helicopter.
Dempsey, T. K., Greene, G. C., Mixson, J. S.   +2 more
core   +2 more sources

Effects of Aircraft Noise on Sleep: Federal Aviation Administration National Sleep Study Protocol. [PDF]

Int J Environ Res Public Health, 2023
Basner M, Barnett I, Carlin M, Choi GH, Czech JJ, Ecker AJ, Gilad Y, Godwin T, Jodts E, Jones CW, Kaizi-Lutu M, Kali J, Opsomer JD, Park-Chavar S, Smith MG, Schneller V, Song N, Shaw PA.   +17 more
europepmc   +1 more source

Monitoring wildlife using long‐endurance solar‐electric UAVs

Wildlife Biology, EarlyView.
This report discusses the effectiveness of using small solar‐electric UAV (uncrewed aerial vehicles) for aerial wildlife monitoring. We review four years of aerial wildlife monitoring missions using a 5.5‐m wingspan, solar‐electric UAV that was equipped with a gimballed IR/RGB camera.
Götz Bramesfeld, William Bissonnette, Maya Rahaman‐Noronha, Kanwar Johal   +3 more
wiley   +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., Reddy, N. N., Tam, C. K. W., Tibbetts, J. G.   +3 more
core   +1 more source

Aircraft Noise Reduction Strategies and Analysis of the Effects. [PDF]

Int J Environ Res Public Health, 2023
Xie J, Zhu L, Lee HM.
europepmc   +1 more source

Effects of complex soundscapes on the occurrence of Anaxipha pallidula in isolated green spaces in Tokyo

Wildlife Biology, EarlyView.
Urban green spaces experience a mix of natural and anthropogenic noises, which could disrupt the vocal communication of several species. This study investigated how such complex soundscapes affect the occurrence of Anaxipha pallidula, which communicates through calls, focusing on both sound level and quality.
Hiroki Mori, Takeshi Osawa
wiley   +1 more source

Aircraft noise propagation [PDF]

Sound diffraction experiments conducted at NASA Langley Research Center to study the acoustical implications of the engine over wing configuration (noise-shielding by wing) and to provide a data base for assessing various theoretical approaches to the ...
Hadden, W. J., Pierce, A. D.
core   +1 more source

Nocturnal aircraft noise effects.

Noise & health, 2004
Noise protection associated with the construction and extension of airports in the Federal Republic of Germany has been regulated by the law for protection against aircraft noise since 1971. This legislation is due for revision because of different aspects.
Basner, M., Samel, A.
openaire   +2 more sources

Evaluating machine learning models for multi‐species wildlife detection and identification on remote sensed nadir imagery in South African savanna

Wildlife Biology, EarlyView.
This research paper investigates the efficacy of leading machine learning (ML) models for detecting and identifying ungulate species in African savanna using nadir imagery from unmanned aerial vehicles (UAVs). Traditional aerial counting methods, while widely used, suffer from significant limitations in accuracy and precision, in part due to human ...
Paul Allin, Fadel Seydou, Radloff Frans, Andrew Davies, Alison Leslie   +4 more
wiley   +1 more source