16 research outputs found
Proverbs of Arittapatti and its Reflection on the Society
Oral traditions are the historical and geographical shadow of a country. They are the messages that are transmitted orally from one generation to another. The messages may be passed down through speech, song, folktales, mythological stories and narrations, proverbs and sayings. They are the gems of the ancient wisdom and knowledge of a society. They provide information about the daily life of the people of the region. Especially, proverbs help to understand the customs and traditions, religious practices and the heritage of the society. They play the pivotal role in the anthropological, historical and cultural study. India is the land of villages is famous for its diverse culture embedded with oral tradiitons. Especially, Tamil Nadu is the treasure house of oral traditions. Though there are reports describing the significance of the oral traditions focusing Tamil Nadu, this study aims to highight the association of proverbs in the day to day life of the village community, Arittaptti, even today
Experimental study to determine angle of fire on selected solid targets by 9mm semi-automatic pistol
Crimes involving the use of firearms represent a significant area of forensic investigation. In legal proceedings of criminal
events that involve the use of firearms and ammunitions, the expert forensic officer should be able to produce crucial information
to the court. The existence of bullet holes is a significant aspect in crime scene reconstruction. It is a terminal ballistics study
using various solid targets. The study is aimed to conduct an experimental firing study by using 9 mm pistol fired on selected
solid targets viz. plywood, ceramic tiles, glass plate, aluminium metal sheet and PVC sheet and examined the damaged
characteristics. The range of firing was fixed as 10m in all shooting exercises. The shooting exercise was conducted at
Sungai Buloh shooting range by trained firearms experts, Polis Di Raja Malaysia, Bukit Aman. Kuala Lumpur. The result of
the investigation showed that the angle of impact is below 90 degree in all the targets
Lie symmetry analysis and group invariant solutions of the nonlinear Helmholtz equation
We consider the nonlinear Helmholtz (NLH) equation describing the beam
propagation in a planar waveguide with Kerr-like nonlinearity under
non-paraxial approximation. By applying the Lie symmetry analysis, we determine
the Lie point symmetries and the corresponding symmetry reductions in the form
of ordinary differential equations (ODEs) with the help of the optimal systems
of one-dimensional subalgebras. Our investigation reveals an important fact
that in spite of the original NLH equation being non-integrable, its symmetry
reductions are of Painlev\'e integrable. We study the resulting sets of
nonlinear ODEs analytically either by constructing the integrals of motion
using the modified Prelle-Singer method or by obtaining explicit travelling
wave-like solutions including solitary and symbiotic solitary wave solutions.
Also, we carry out a detailed numerical analysis of the reduced equations and
obtain multi-peak nonlinear wave trains. As a special case of the NLH equation,
we also make a comparison between the symmetries of the present NLH system and
that of the standard nonlinear Schr\"odinger equation for which symmetries are
long available in the literature.Comment: Accepted for publication in "Applied Mathematics and Computation". 18
pages, 15 figure