Results 11 to 20 of about 70,174 (264)

Photoassisted Andreev reflection as a probe of quantum noise [PDF]

open access: yesPhysical Review B, 2007
Andreev reflection, which corresponds to the tunneling of two electrons from a metallic lead to a superconductor lead as a Cooper pair (or vice versa), can be exploited to measure high frequency noise. A detector is proposed, which consists of a normal lead--superconductor circuit, which is capacitively coupled to a mesoscopic circuit where noise is to
Nguyen, T. K. T.   +4 more
openaire   +3 more sources

Optimal design for the artificial‐noise‐aided IRS‐MIMO‐OFDM secure communications

open access: yesIET Communications, 2022
This paper discusses an artificial noise‐aided intelligent reflecting surface‐MIMO–OFDM system physical layer secure communication, in which two cases for the intelligent reflecting surface reflection coefficient models are considered separately, that is
Jingya Ren   +4 more
doaj   +1 more source

Acoustic Metamaterials in Aeronautics

open access: yesApplied Sciences, 2018
Metamaterials, man-made composites that are scaled smaller than the wavelength, have demonstrated a huge potential for application in acoustics, allowing the production of sub-wavelength acoustic absorbers, acoustic invisibility, perfect acoustic mirrors
Giorgio Palma   +4 more
doaj   +1 more source

Reflective Noise Filtering of Large-Scale Point Cloud Using Transformer

open access: yesRemote Sensing, 2022
Point clouds acquired with LiDAR are widely adopted in various fields, such as three-dimensional (3D) reconstruction, autonomous driving, and robotics.
Rui Gao   +3 more
doaj   +1 more source

Possibilities of Evaluating the Effectiveness of Noise Barriers in Slovakia

open access: yesApplied Sciences, 2021
This paper presents environmental acute problems from increasing noise levels caused by automobile and rail transport. Noise barriers are considered to be an effective element in reducing noise in densely populated urban areas. However, do these barriers
Alžbeta Pultznerová   +2 more
doaj   +1 more source

Updated urban facade design for quieter outdoor spaces

open access: yesJournal of Facade Design and Engineering, 2017
The increasing migration into cities leads to an increasing number of people stressed by noise. More and more people are moving into urban settings comprised of multiple noise sources and hard reflective glass and steel facades.
Jochen Krimm   +2 more
doaj   +1 more source

Numerical and Experimental Validation of Active Vibration Control Logic Performance of a Hybrid Noise Control-Based Brick

open access: yesAcoustics, 2022
The limitations of active noise control (ANC) in coping with low frequencies and of passive noise control (PNC) in coping with middle-high frequencies are objects of research that present the potentialities of hybrid noise control (HBC).
Ilaria Ronconi   +5 more
doaj   +1 more source

An Experimental Investigation into the Difference in the External Noise Behavior of a High-Speed Train between Viaduct and Embankment Sections

open access: yesShock and Vibration, 2022
Track construction is likely to exert a significant effect on railway environmental noise. In this study, a detailed comparative investigation was conducted to analyze the differences in the external noises generated by a Chinese high-speed train passing
Muxiao Li   +5 more
doaj   +1 more source

Noise barrier using hybrid ANC system (Supression of the noise enhancement caused by the waterbed effect and investigation of the noise attenuation performace under various sound field configurations)

open access: yesNihon Kikai Gakkai ronbunshu, 2015
In this paper, the hybrid active noise control (HB-ANC) system applied in the active noise barrier (ANB) is improved, and the noise attenuation performace of the ANB is invetigated under four different sound field configurations.
Xun WANG   +3 more
doaj   +1 more source

Heat-Mode Excitation in a Proximity Superconductor

open access: yesNanomaterials, 2022
Mesoscopic superconductivity deals with various quasiparticle excitation modes, only one of them—the charge-mode—being directly accessible for conductance measurements due to the imbalance in populations of quasi-electron and quasihole excitation ...
Artem Denisov   +10 more
doaj   +1 more source

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