http://pucir.inflibnet.ac.in:8080/jspui/handle/123456789/682 2026-05-03T03:47:53Z http://pucir.inflibnet.ac.in:8080/jspui/handle/123456789/1063 Title: Effect of mechanical relaxation time in elastic materials with voids Authors: Thangmawia, L Abstract: The effect of mechanical relaxation time in the elastic wave propagation in elastic materials with voids is investigated. The phase speed and the attenuation coefficients are obtained and observed the effect of mechanical relaxation time. The phenomenon of reflection of elastic waves due to the incident waves from a plane boundary of elastic materials with voids is studied. The amplitude and energy ratios of the reflected waves are obtained. Numerically these ratios, phase speeds and the corresponding attenuation coefficients are computed for a particular model and the effect of mechanical relaxation time is discussed. 2019-04-28T00:00:00Z http://pucir.inflibnet.ac.in:8080/jspui/handle/123456789/1060 Title: Effectiveness of ICT on Online Mathematics Teaching and Learning in Secondary Schools of Mizoram during Covid-19 Pandemic Authors: Thangmawia, L Abstract: Since ICT has become such an important feature in everyday life, it is no wonder that it has also burrowed through the teaching and learning scenario making its presence felt in more ways than one. The coming of the Covid-19 pandemic, though a calamity in itself, provided an opportunity to find out the true effectiveness of ICT on online mathematics teaching and learning. The population under consideration was secondary teachers teaching mathematics. The findings clearly outlined the status of mathematics teachers when it came to teaching mathematics using ICT. It was discovered that mathematics educators did not consider ICT adequate to replace offline teaching, but they considered that it could supplement it. Besides, it was also observed that students themselves enjoyed teaching enhanced with ICT. 2022-07-01T00:00:00Z http://pucir.inflibnet.ac.in:8080/jspui/handle/123456789/683 Title: Effect of mechanical relaxation time in elastic materials with voids Authors: Thangmawia, L Abstract: The effect of mechanical relaxation time in the elastic wave propagation in elastic materials with voids is investigated. The phase speed and the attenuation coefficients are obtained and observed the effect of mechanical relaxation time. The phenomenon of reflection of elastic waves due to the incident waves from a plane boundary of elastic materials with voids is studied. The amplitude and energy ratios of the reflected waves are obtained. Numerically these ratios, phase speeds and the corresponding attenuation coefficients are computed for a particular model and the effect of mechanical relaxation time is discussed. 2019-04-28T00:00:00Z