Results 161 to 170 of about 179,532 (301)

Soundscape dynamics of a cold protected forest: dominance of aircraft noise. [PDF]

open access: yesLandsc Ecol, 2022
Grinfeder E   +6 more
europepmc   +1 more source

Engine exhaust characteristics evaluation in support of aircraft acoustic testing [PDF]

open access: yes
NASA Dryden Flight Research Facility and NASA Langley Research Center completed a joint acoustic flight test program. Test objectives were (1) to quantify and evaluate subsonic climb-to-cruise noise and (2) to obtain a quality noise database for use in ...
Ennix, Kimberly A.
core   +1 more source

The Inclusionary Effects of Performing Work: A Practice‐Theoretical Study of Airport Security Work

open access: yesJournal of Management Studies, EarlyView.
Abstract In contrast to inclusion research that often treats work as a neutral, passive background, this study theorizes the active role of work in producing an inclusive organization. We adopt a practice‐theoretical approach that examines the accomplishment of work activities through their discourses, embodiment, and material arrangements, critically ...
Laura Dobusch   +3 more
wiley   +1 more source

Co-exposure to urban particulate matter and aircraft noise adversely impacts the cerebro-pulmonary-cardiovascular axis in mice. [PDF]

open access: yesRedox Biol, 2023
Kuntic M   +27 more
europepmc   +1 more source

Is sleep affected after microgravity and hypergravity exposure? A pilot study

open access: yesJournal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary Sleep is known to be affected in space travel and in residents of the international space station. But little is known about the direct effects of gravity changes on sleep, if other factors, such as sleep conditions, are kept constant. Here, as a first exploration, we investigated sleep before and after exposure to short bouts of microgravity ...
Barbara Le Roy   +9 more
wiley   +1 more source

Long-term aircraft noise exposure and risk of hypertension in the Nurses' Health Studies. [PDF]

open access: yesEnviron Res, 2022
Kim CS   +11 more
europepmc   +1 more source

Far Term Noise Reduction Technology Roadmap for a Large Twin-Aisle Tube-And-Wing Subsonic Transport [PDF]

open access: yes
Interest in unconventional aircraft architectures has steadily increased over the past several decades. However, each of these concepts has several technical challenges to overcome before maturing to the point of commercial acceptance. In the interim, it
Clark, Ian A.   +3 more
core   +1 more source

The Mathematical History Behind the Granger–Johansen Representation Theorem

open access: yesOxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT When can a vector time series that is integrated once (i.e., becomes stationary after taking first differences) be described in error correction form? The answer to this is provided by the Granger–Johansen representation theorem. From a mathematical point of view, the theorem can be viewed as essentially a statement concerning the geometry of ...
Johannes M. Schumacher
wiley   +1 more source

Inlet technology for powered-lift aircraft [PDF]

open access: yes
The concepts, analytical tools, and experimental data available for designing inlets for powered lift aircraft are discussed. It is shown that inlets can be designed to meet noise, distortion, and cruise drag requirements at the flight and engine ...
Luidens, R. W.
core   +1 more source

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