REMathEx — Reader and Editor of the Mathematical Expressions for Blind Students

Author(s):  
Pavel Gaura
2020 ◽  
Vol 42 (2) ◽  
pp. 35-56
Author(s):  
Raehyung Kang ◽  
Yoonjeong Kang
Keyword(s):  

Friction ◽  
2021 ◽  
Author(s):  
Kevin Lontin ◽  
Muhammad Khan

AbstractPhenomena of friction, wear, and noise in mechanical contacts are particularly important in the field of tribomechanics but equally complex if one wants to represent their exact relationship with mathematical models. Efforts have been made to describe these phenomena with different approaches in past. These efforts have been compiled in different reviews but most of them treated friction, wear mechanics, and acoustic noise separately. However, an in-depth review that provides a critical analysis on their interdependencies is still missing. In this review paper, the interdependencies of friction, wear, and noise are analysed in the mechanical contacts at asperitical level. The origin of frictional noise, its dependencies on contact’s mechanical properties, and its performance under different wear conditions are critically reviewed. A discussion on the existing mathematical models of friction and wear is also provided in the last section that leads to uncover the gap in the existing literature. This review concludes that still a comprehensive analytical modelling approach is required to relate the interdependencies of friction, noise, and wear with mathematical expressions.


1980 ◽  
Vol 74 (4) ◽  
pp. 147-150
Author(s):  
Hilda Caton ◽  
Earl Rankin

This study was designed to identify various problems encountered by children who read braille and use conventional basal reading programs transcribed into that medium. It was hoped that this information could be used to improve methods of teaching blind children to read and to help design more suitable reading materials for them. The results showed educationally significant variability in chronological age, years in school and grade level for blind children using basal reader materials designed for sighted readers at specific grade levels.


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