Results 11 to 20 of about 3,916,431 (304)

Transmission loss allocation through a modified Ybus [PDF]

open access: yes, 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
core   +1 more source

Frame delay and loss analysis for video transmission over time-correlated 802.11A/G channels [PDF]

open access: yes, 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

Green Shipping—Multifunctional Marine Scrubbers for Emission Control: Silencing Effect

open access: yesApplied Sciences, 2021
Scrubber systems abate the sulphur oxide emissions of engines when cheap fuel oils that are high in sulphur content are employed as combustibles. However, the ships with these voluminous devices installed on board is space demanding.
Giada Kyaw Oo D’Amore   +3 more
doaj   +1 more source

Noise prediction considering transmitted sound from noise barriers

open access: yesNihon Kikai Gakkai ronbunshu, 2019
In the noise prediction on railway viaducts by numerical acoustic analysis, it is premised that the noise barriers have sufficient sound insulation performance.
Daigo SATO, Akira OMOTO
doaj   +1 more source

Development of a Slit-Type Soundproof Panel for a Reduction in Wind Load and Low-Frequency Noise with Helmholtz Resonators

open access: yesApplied 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
doaj   +1 more source

Study Onpower Loss in Watt-hour Meter Wiring Check Based on Wireless Solutions

open access: yesJournal 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
doaj   +1 more source

Large-scale security constrained optimal reactive power flow for operational loss management on the GB electricity transmission network [PDF]

open access: yes, 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
core   +3 more sources

Advanced Rating Method of Airborne Sound Insulation

open access: yesApplied 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
doaj   +1 more source

2D Modeling of Wave Propagation in Shallow Water by the Method of Characteristics [PDF]

open access: yesArchives 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
doaj   +1 more source

Transmission loss in manatee habitats

open access: yesThe Journal of the Acoustical Society of America, 2006
The Florida manatee is regularly exposed to high volumes of vessel traffic and other human-related noise because of its coastal distribution. Quantifying specific aspects of the manatee’s acoustic environment will allow for a better understanding of how these animals respond to both natural and human-induced changes in their environment.
Miksis-Olds, Jennifer L.   +1 more
openaire   +4 more sources

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