Results 11 to 20 of about 4,876,481 (301)
Acoustic transmission loss in Hilbert fractal metamaterials. [PDF]
Sci Rep, 2023 AbstractAcoustic metamaterials are increasingly being considered as a viable technology for sound insulation. Fractal patterns constitute a potentially groundbreaking architecture for acoustic metamaterials. We describe in this work the behaviour of the transmission loss of Hilbert fractal metamaterials used for sound control purposes. The transmission
Comandini G +3 more
europepmc +6 more sources
Study of Transmission Loss on Muffler
Research Journal of Applied Sciences, Engineering and Technology, 2013 : Transmission loss is the main method which measure silencer sound deadening capacity. The most effective noise elimination technique of compensator is muffler.
Wang Yongjuan, Wang Bing, X U Cheng
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Large-scale security constrained optimal reactive power flow for operational loss management on the GB electricity transmission network [PDF]
, 2010 This thesis was submitted for the degree of Engineering Doctorate and awarded by Brunel University, 22/12/2010.The transmission of power across the GB transmission system, as operated by National Grid, results in inevitable loss of electrical power ...
Macfie, Peter
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Transmission losses in left-handed materials [PDF]
Physical Review E, 2002 We numerically analyze the origin of the transmission losses in left-handed structures. Our data confirms that left handed structures can have very good transmission properties, in spite of the expectable dispersion of their effective permeability and refraction index. The large permittivity of the metallic components improves the transmission.
markos, P. +2 more
openaire +3 more sources
Transmission loss allocation through a modified Ybus [PDF]
, 2005 A methodology to allocate the active power transmission loss among agents of a power pool is proposed. The approach is based on the inclusion of the admittances equivalent to bus power injections in the bus admittance matrix.
Daniel, JS, Irving, MR, Salgado, RS
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Frame delay and loss analysis for video transmission over time-correlated 802.11A/G channels [PDF]
, 2007 This paper presents simulation results for the transmission of unicast MAC frames over 802.11a/g. Fading channel models at various Doppler frequencies are developed to generate time- correlated SNR waveforms.
Bull, David +9 more
core +1 more source
Applied Sciences, 2021 With the rapid increase in automobiles, the importance of reducing low-frequency noise is being emphasized for a comfortable urban environment. Helmholtz resonators are widely used to attenuate low-frequency noise over a narrow range.
Byunghui Kim +6 more
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Study Onpower Loss in Watt-hour Meter Wiring Check Based on Wireless Solutions
Journal of Harbin University of Science and Technology, 2018 Switching out directly or judging by wired signal was the conventional method of checking meter wiring. A method which improves the efficiency of troubleshooting and greatly reduces the influence on users is presented by this paper for users of ...
KOU Ying-gang +3 more
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Advanced Rating Method of Airborne Sound Insulation
Applied Sciences, 2016 This paper describes an advanced calculation scheme based on the loudness level linked to the specific fluctuation strength yielding a weighted normalized loudness level difference as a single number value.
Reinhard O. Neubauer
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2D Modeling of Wave Propagation in Shallow Water by the Method of Characteristics [PDF]
Archives of Acoustics, 2022 In this paper, a 2D numerical modeling of sound wave propagation in a shallow water medium that acts as a waveguide, are presented. This modeling is based on the method of characteristic which is not constrained by the Courant–Friedrichs–Lewy (CFL ...
Mohammad Reza Khalilabadi
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