Results 161 to 170 of about 7,028,550 (415)

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

Evaluation of dosimetric and spatial accuracy of a virtual cone technique for radiosurgery using linac‐integrated CBCT‐based polymer gel dosimetry

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study evaluates the dosimetric and geometric precision of a virtual cone technique using CBCT‐based polymer gel dosimetry, enabling radiation delivery, and imaging readout within an identical spatial coordinate system. Methods We created a C# script for a virtual cone technique that generates a treatment plan with 10 gantry arcs ...
Tenzin Kunkyab, Michael Lamey, Andrew Jirasek, Michael Kudla, Nathan Becker, Benjamin Mou, Derek Hyde   +6 more
wiley   +1 more source

Field Survey of the Noise Reduction of Folding Partitions [PDF]

, 1958
Howard C. Hardy, James E. Ancell
openalex   +1 more source

Suppression of Shot Noise in Quantum Point Contacts in the "0.7" Regime

, 2006
Experimental investigations of current shot noise in quantum point contacts show a reduction of the noise near the 0.7 anomaly. It is demonstrated that such a reduction naturally arises in a model proposed recently to explain the characteristics of the 0.
A. Golub, T. Aono, Y. Meir, Yigal Meir
core   +1 more source

Evaluation of the system accuracy of frameless stereotactic radiosurgery using a combination of cone beam CT, six degrees of freedom couch, and surface image‐guided systems

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study aims to evaluate the accuracy of the frameless linear accelerator‐based stereotactic radiosurgery (FSRS) system incorporating cone‐beam CT (CBCT), six degrees of freedom (6‐DoF) couch, room laser, and surface image‐guided (SG) systems.
Hao‐Wen Cheng, Jonathan Li, Sheng‐Hsuan Sun, Guanghua Yan, Chihray Liu   +4 more
wiley   +1 more source

Recent Engineering Applications for Noise Reduction in an Automotive Industry

Journal of Advanced Research in Natural and Applied Sciences
Industrialization harms as it results in the emission of noise into the surroundings and employees. Especially noise is one of the most common causes of hearing disorders and one of the most common occupational diseases in the industry. Reducing the main
Berkay Uğur, Ender Pak, Ülge Taş
doaj   +1 more source

Part III. Noise Reduction [PDF]

, 1930
John S. Parkinson
openalex   +1 more source

Fast, automated optimization of virtual monoenergetic images with the dual‐energy image synthesizer for cone‐beam CT

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Dual‐energy cone‐beam CT (DE‐CBCT) has become subject of recent interest due to the ability to produce virtual monoenergetic images (VMIs) with improved soft‐tissue contrast and reduced nonuniformity artifacts. However, efficient production and optimization of VMIs remains an under‐explored part of DE‐CBCT's application.
Andrew Keeler, Jason Luce, Mathias Lehmann, John C. Roeske, Hyejoo Kang   +4 more
wiley   +1 more source

Binaural noise reduction via cue-preserving MMSE filter and adaptive-blocking-based noise PSD estimation

EURASIP Journal on Advances in Signal Processing, 2017
Binaural noise reduction, with applications for instance in hearing aids, has been a very significant challenge. This task relates to the optimal utilization of the available microphone signals for the estimation of the ambient noise characteristics and ...
Masoumeh Azarpour, Gerald Enzner
doaj   +1 more source

Noise Reduction in Signal Corps Hand Generators. Part II: Acoustic Housings for the Generators [PDF]

, 1947
George W. Sherard
openalex   +1 more source