**Author details**

Srinivasan Murugan1 \*, Quy Bau Nguyen2 and Manoj Gupta<sup>3</sup>

1 Dhofar University, Salalah, Oman


\*Address all correspondence to: smurugan@du.edu.om

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
