Results 241 to 250 of about 3,544,653 (296)
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, 2020
Highway automobile emissions is an important environmental issue and can be complex due to the influences of multiple factors such as noise barrier configurations, vehicle induced wake flows, and traffic flow conditions.
Shaoguang Wang, Xiuling Wang
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Highway automobile emissions is an important environmental issue and can be complex due to the influences of multiple factors such as noise barrier configurations, vehicle induced wake flows, and traffic flow conditions.
Shaoguang Wang, Xiuling Wang
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Noise control by barriers—Part 1: Noise reduction by a thick barrier
Applied Acoustics, 1977Abstract This paper presents a method of estimating the excess attenuation of noise by a thick barrier. In this method, the excess attenuation of noise by a thick barrier is assumed to be composed of two parts, one being the effect of a virtual thin barrier with the same height and the other the effect of thickness. A single chart for estimating this
K. Fujiwara, Y. Ando, Z. Maekawa
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Progress in Photovoltaics: Research and Applications, 2004
AbstractPV on noise barriers has been around for 14 years. During this time considerable progress has been achieved not only on the PV module technology, but also in the construction of photovoltaic noise barriers (PVNB). The first plant was built in Switzerland in 1989; at present there are numerous plants with a total documented power of about 850 ...
Thomas Nordmann, Luzi Clavadetscher
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AbstractPV on noise barriers has been around for 14 years. During this time considerable progress has been achieved not only on the PV module technology, but also in the construction of photovoltaic noise barriers (PVNB). The first plant was built in Switzerland in 1989; at present there are numerous plants with a total documented power of about 850 ...
Thomas Nordmann, Luzi Clavadetscher
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Voltage Noise Mitigation With Barrier Approximation
IEEE Computer Architecture Letters, 2020Barrier synchronization constructs are placed between phases of parallel programs to ensure correctness in the execution – by preventing threads from proceeding to the subsequent phases of the program before all threads have completed the preceding stage(s). Upon release, threads leaving the barrier at the same time cause sudden change in activity that
Zamshed I. Chowdhury +5 more
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International Journal of Rail transportation
Noise is a major problem in the development of rapid rail transit systems. To reduce the impact of wheel – rail noise and other types of noise on the sound environment along the railway, sound barriers are often installed on both sides of the rail ...
Xiaoan Zhang +5 more
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Noise is a major problem in the development of rapid rail transit systems. To reduce the impact of wheel – rail noise and other types of noise on the sound environment along the railway, sound barriers are often installed on both sides of the rail ...
Xiaoan Zhang +5 more
semanticscholar +1 more source
Noise & Vibration Worldwide, 2000
Charles Ransford & Sons Ltd., of Bishop's Castle, Shropshire, specialise in the design and manufacture of absorbing and reflecting environmental noise barriers for a host of schemes from housing and factories to road and rail. This article by Peter Walters describes the company's approach.
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Charles Ransford & Sons Ltd., of Bishop's Castle, Shropshire, specialise in the design and manufacture of absorbing and reflecting environmental noise barriers for a host of schemes from housing and factories to road and rail. This article by Peter Walters describes the company's approach.
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Design of noise barriers for the mitigation of construction noise
INTER-NOISE and NOISE-CON Congress and Conference Proceedings, 2021Noise pollution is a major problem in many major cities in particular a small island state like Singapore with residential buildings very close to the major trunk roads and expressways. The problem is aggravated by the ongoing city redevelopment and construction of new mass rapid transit lines.
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The Potential of PV Noise Barrier Technology in Europe
, 2020Photovoltaics is expanding into new market segments. Photovoltaic noise barriers (PVNB) along motorways and railways permit today one of the most economic applications of grid-connected PV with the additional benefits of large scale plants (typical ...
T. Nordmann +12 more
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Use of Noise Barriers for Helicopter Noise Mitigation
Noise & Vibration Worldwide, 2009The possibility of using noise barriers for helicopter noise mitigation is numerically investigated. The noise field produced by an isolated main rotor in the presence of a barrier on the ground is predicted by employing and appropriately modifying existing diffraction and reflection models.
Penelope Menounou +1 more
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The Journal of the Acoustical Society of America, 1987
A post and panel type noise barrier fence is formed of a plurality of concrete vertical posts or columns which have grooves to hold flat concrete panels between successive ones of the columns. The panels can have a stepped lower edge to accommodate elevational changes in the terrain. Also, certain of the columns have oppositely disposed recesses angled
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A post and panel type noise barrier fence is formed of a plurality of concrete vertical posts or columns which have grooves to hold flat concrete panels between successive ones of the columns. The panels can have a stepped lower edge to accommodate elevational changes in the terrain. Also, certain of the columns have oppositely disposed recesses angled
openaire +1 more source