A new method for tracing rays through graded-index media is presented. The method essentially consists of transforming the ray equation into a convenient form and solving the resulting equation using a standard numerical technique. A detailed comparison of this method with existing methods has also been made, and it is shown that for obtaining a desired accuracy this method requires much less computational effort.
This study was conducted among the Maldhari community to understand the sustainability of migratory pastoralism during Covid-19. Bhuj and Lakpat Talukas of Kachchh district, Gujarat were selected to study the effect of profile variables on the annual income and net income of the families. The study revealed that family size and taluka were the significant factors influencing total income whereas taluka was the only significant factor influencing net income. Due to reduced sale of milk resulting from Covid-19, most of the milk was converted i to khoa and the income generated from its sale was the major source of income for the migratory families. Cow dung fetched a minimal price which served as major source of their livelihood with no input cost. The value addition with better marketing facilities can significantly enhance the income of the pastoralists in the Kachchh district.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.