Noise measurement methods for printing, paper converting, paper making machines and auxiliary equipment. Accuracy grades 2 and 3

2015 ◽  
Keyword(s):  
Measurement Methods ◽  
Noise Measurement ◽  
Auxiliary Equipment ◽  
Paper Making ◽  
Printing Paper

Reading: A Very Short Introduction

2019 ◽  
Author(s):  
Belinda Jack
Keyword(s):  
Public Education ◽  
18Th Century ◽  
Ancient World ◽  
Human History ◽  
Digital Reading ◽  
Short Introduction ◽  
Paper Making ◽  
Late 18Th Century ◽  
History Of ◽  
Printing Paper

Reading: A Very Short Introduction explores the fascinating history of literacy and the opportunities reading opens. For much of human history reading was the preserve of the elite, and most reading meant being read to. Innovations in printing, paper-making, and transport, combined with increased public education, brought a boom in worldwide literacy from the late 18th century. Established links between a nation’s levels of literacy and its economy led to the promotion of reading for political ends. Reading has also been associated with subversive ideas, leading to censorship. Telling the story of reading, its ambiguities and complexities, from the ancient world to digital reading and restrictions today, this VSI explores why it is such an important aspect of our society.

Harmonization of Noise Measurement Methods: Measurements of radio impulsive noise from a specific source.

2015 ◽  
Vol 57 (5) ◽  
pp. 64-72 ◽  
Author(s):  
Marta Fernandez ◽  
Iratxe Landa ◽  
Amaia Arrinda ◽  
Ruben Torre ◽  
Manuel Velez
Keyword(s):  
Impulsive Noise ◽  
Measurement Methods ◽  
Noise Measurement ◽  
Specific Source

scholarly journals Drivetrain Noise of The Gyroplane I-28

2018 ◽  
Vol 2018 (1) ◽  
pp. 7-16
Author(s):  
Sławomir Cieślak ◽  
Wiesław Krzymień
Keyword(s):  
Measurement Methods ◽  
Noise Measurement ◽  
Frequency Range ◽  
Noise Sources ◽  
Rotor Noise ◽  
Directional Emission ◽  
Low Altitude ◽  
Special Stand

Abstract Gyroplanes, as ultralight aircraft, are popular transport vehicles recently. Ultralight aircraft flights take place at a low altitude – their noise is not without effect on people and nature. The localization of the sources of noise and a possibility to decrease the noise of an gyroplane are described in this paper. The rules of design and exploitation of gyroplanes do not define the limits of emitted noise. Gyroplanes are not noisy aircraft vehicles but for their silencing the knowledge about the sources and frequency range of noise is necessary. The goal of the conducted measurement was to determine the gyro-plane noise properties and the noise measurement methods. The evaluation of the noise sources was made by acoustic beamforming and the directional emission with single microphones at various engine speeds. The supplement of these tests should be the rotor noise measurement but that investigation should be performed on a special stand, on which the rotor propulsion noise would not disturb the measurement.

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