scholarly journals Estimates of residential floor vibration induced by sonic booms

2016 ◽  
Vol 139 (4) ◽  
pp. 2007-2007 ◽  
Author(s):  
Jacob Klos
Keyword(s):  
Sonic Booms ◽  
Floor Vibration

A Comparative Study of Indoor Human Response to Blast Noise and Sonic Booms

1998 ◽  
Author(s):  
Paul D. Schomer ◽  
John W. Sias ◽  
Domenic Maglieri
Keyword(s):  
Comparative Study ◽  
Human Response ◽  
Sonic Booms

scholarly journals Feasibility of Using Floor Vibration to Detect Human Falls

2020 ◽  
Vol 18 (1) ◽  
pp. 200
Author(s):  
Yu Shao ◽  
Xinyue Wang ◽  
Wenjie Song ◽  
Sobia Ilyas ◽  
Haibo Guo ◽  
...  
Keyword(s):  
Machine Learning ◽  
Human Body ◽  
Nearest Neighbor ◽  
Body Movement ◽  
Modern Society ◽  
Recognition System ◽  
Machine Learning Algorithms ◽  
K Nearest Neighbor ◽  
Study Results ◽  
Floor Vibration

With the increasing aging population in modern society, falls as well as fall-induced injuries in elderly people become one of the major public health problems. This study proposes a classification framework that uses floor vibrations to detect fall events as well as distinguish different fall postures. A scaled 3D-printed model with twelve fully adjustable joints that can simulate human body movement was built to generate human fall data. The mass proportion of a human body takes was carefully studied and was reflected in the model. Object drops, human falling tests were carried out and the vibration signature generated in the floor was recorded for analyses. Machine learning algorithms including K-means algorithm and K nearest neighbor algorithm were introduced in the classification process. Three classifiers (human walking versus human fall, human fall versus object drop, human falls from different postures) were developed in this study. Results showed that the three proposed classifiers can achieve the accuracy of 100, 85, and 91%. This paper developed a framework of using floor vibration to build the pattern recognition system in detecting human falls based on a machine learning approach.

On Sonic Booms: People vs Planes

Physics Today ◽  
1968 ◽  
Vol 21 (6) ◽  
pp. 9-9
Author(s):  
Cyril Stanley Smith
Keyword(s):  
Sonic Booms

Sonic Booms Shake Up Officials

Science ◽  
1968 ◽  
Vol 161 (3839) ◽  
pp. 343-343
Author(s):  
Marti Mueller
Keyword(s):  
Sonic Booms

Sonic Booms

Science ◽  
1967 ◽  
Vol 158 (3799) ◽  
pp. 315-315
Author(s):  
Robert F. Marschner
Keyword(s):  
Sonic Booms
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