Results 31 to 40 of about 808,943 (200)
Aircraft Noise Monitoring in Function of Flight Safety and Aircraft Model Determination
Journal of Advanced Transportation, 2017 This paper presents the research of noise level monitoring at the Zagreb Airport Ltd. The purpose of this paper is to show how the aircraft noise sources can be used as a tool for aircraft detection and for increasing flight safety. The noise measurement
Andrija Vidović +2 more
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Boundary Conditions for Algebraic Solution of Few View Fiber-Optical Tomographic Problem
Современные информационные технологии и IT-образование, 2022 General mathematical definition of two layouts of the fiber-optical measuring lines on distributed fiber-optical measuring network in three directions with diagonal lines removal and zigzag method are given.
Igor V. Denisov, Dmitriy N. Piskun
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Reduction of commercial aircraft noise emission around airports. A new environmental challenge [PDF]
, 2009 Noise abatement procedures (NAPs) are considered as a necessary measure for a balanced approach of noise control around airports. Their correct implementation depends upon many factors, which vary in operation and influence the efficiency of the NAPs ...
Salah Khardi
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Experimental Investigation of Pressure Fluctuation, Vibration, and Noise in a Multistage Pump
Shock and Vibration, 2018 In order to measure the pressure pulsation, vibration, and noise characteristics of multistage centrifugal pump in different flow rates, a five-stage centrifugal pump was chosen as research object.
Kai Wang +3 more
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On Suitability of Day-Night Average Sound Level Descriptor in Indian Scenario
Archives of Acoustics, 2019 The paper analyzes the monthly day equivalent levels, Lday (06–22h) and night equivalent levels, Lnight (22–06 h) values observed in year 2015 and 2016 for the 70 locations whereby continuous noise monitoring is conducted under the National Ambient Noise
Naveen GARG
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A Digital Signal Processor Based Acoustic Sensor for Outdoor Noise Monitoring in Smart Cities
Sensors, 2020 Presently, large cities have significant problems with noise pollution due to human activity. Transportation, economic activities, and leisure activities have an important impact on noise pollution.
Juan Manuel López +5 more
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Dizhen xuebao, 2023 由于常用的均方根值法和噪声功率谱法不能消除不同传感器记录的噪声干扰，为提高噪声水平计算的准确度，本文选用最大概率峰值位移作为背景噪声评估指标。基于可靠的噪声数据，借鉴震级-最大距离监测能力法并考虑预警时效，提出了地震预警最小震级评估方法，系统评估福建三类传感器网及其融合网的地震预警最小震级和预警首报时间。结果表明：测震强震融合网的地震预警最小震级高于单测震网，但明显低于强震网；强震烈度计融合网与单烈度计网的结果相近；三网融合后95%区域的地震预警最小震级约为ML3.2。由于烈度计网比测震和强震网密集 ...
Xiuzhen You +5 more
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Dynamic Monitoring and Displaying Noise Levels in Populated Areas
International journal of electrical and computer engineering systems, 2013 Noise is every unwanted sound that surrounds us. Noise has many sources and lately it has become large-scale problem. Traffic is one of the most important causes of noise. According to impact on human health, there are regulations which designate maximum permissible noise levels in areas where people work and live.
Kovačević, Marija +3 more
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The noise level in metro platforms and halls in a city
Shanghai yufang yixueObjectiveTo investigate the noise level and influencing factors in metro platforms and station halls， thereby providing the scientific basis for the establishment of hygienic standards.MethodsDuring the morning peak（7：00‒9：30）and off-peak （9：30‒17：00） on
HOU Xuebo +6 more
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GIS-based mapping of noise from mechanized minerals ore processing industry
Noise Mapping, 2021 Monitoring workers’ exposure to occupational noise is essential, especially in industrial areas, to protect their health. Therefore, it is necessary to collect information on noise emitted by machines in industries.
Susanto Arif +12 more
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