Results 21 to 30 of about 7,906 (299)

Guidelines for the LTO Noise Assessment of Future Civil Supersonic Aircraft in Conceptual Design

open access: yesAerospace, 2022
One of the most critical regulatory issues related to supersonic flight arises from limitations imposed by community noise acceptability. The most efficient way to ensure that future supersonic aircraft will meet low-noise requirements is the ...
Grazia Piccirillo   +3 more
doaj   +1 more source

Systems and certification issues for civil transport aircraft flow control systems [PDF]

open access: yes, 2009
This article is placed here with permission from the Royal Aeronautical Society - Copyright @ 2009 Royal Aeronautical SocietyThe use of flow control (FC) technology on civil transport aircraft is seen as a potential means of providing a step change in ...
Crowther, W. J.; id_orcid   +5 more
core   +1 more source

High-Dimensional Pixel Entanglement: Efficient Generation and Certification [PDF]

open access: yesQuantum, 2020
Photons offer the potential to carry large amounts of information in their spectral, spatial, and polarisation degrees of freedom. While state-of-the-art classical communication systems routinely aim to maximize this information-carrying capacity via ...
Natalia Herrera Valencia   +6 more
doaj   +1 more source

Certifying nonlocal properties of noisy quantum operations [PDF]

open access: yesQuantum
Certifying quantum properties from the probability distributions they induce is an important task for several purposes. While this framework has been largely explored and used for quantum states, its extrapolation to the level of channels started ...
Albert Rico   +3 more
doaj   +1 more source

Standardised lesion segmentation for imaging biomarker quantitation: a consensus recommendation from ESR and EORTC

open access: yesInsights into Imaging, 2022
Background Lesion/tissue segmentation on digital medical images enables biomarker extraction, image-guided therapy delivery, treatment response measurement, and training/validation for developing artificial intelligence algorithms and workflows.
Nandita M. deSouza   +29 more
doaj   +1 more source

Application and comparison of proposed SST noise certification regulations to a conceptual business aircraft

open access: yes, 2023
Within the DLR’s internal project SIAM, future low-noise aircraft designs for a medium range civil transport aircraft are created. An existing system noise simulation process is further upgraded in order to process aircraft designs and expert input from ...
Bertsch, Lothar   +4 more
core   +1 more source

Sound Propagation Modelling for Manned and Unmanned Aircraft Noise Assessment and Mitigation: A Review

open access: yesAtmosphere, 2021
This paper addresses one of the recognized barriers to the unrestricted adoption of Unmanned Aircraft (UA) in mainstream urban use—noise—and reviews existing approaches for estimating and mitigating this problem.
Rohan Kapoor   +4 more
doaj   +1 more source

Education and Certification in Sound Pressure Level Measurement, Monitoring and Management at Entertainment Events [PDF]

open access: yes, 2021
A recent AES Technical Document on sound exposure and noise pollution due to outdoor music events proposes the creation of a live event sound level management initiative.
Mulder, Johannes   +5 more
core  

Computation of Variable Noise Reduction System Efficiency for Supersonic Civil Aircraft During Takeoff

open access: yesApplied Sciences
The noise of next-generation supersonic civil aircraft can become a significant nuisance for the population in the vicinity of airports. This study investigates the efficiency of the noise control approach for a notional supersonic civil aircraft at ...
Victor Kopiev   +2 more
doaj   +1 more source

Primena sistema za monitoring buke i MatLab-a za proračun nivoa avionske buke / Noise monitoring system and MatLab application for aircraft noise level calculation

open access: yesVojnotehnički Glasnik, 2007
U radu je prikazan način primene sistema za monitoring buke, terminal NMT 3637B i softver 7802, firme Brüel & Kjær, u procesu sertifikacije mlaznih aviona, prema ICAO, standardu Annex 16 i algoritam za proračun EPNL nivoa buke (Effective Perceived Noise ...
Milorad Pavlović, Gordana Jurin
doaj   +1 more source

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