The author of the book, Dr. Bharat Raj Singh, Director General, School of Management Sciences, Lucknow, was born in 1947 at Raibigo, Sultanpur, UP. He received B.Sc. Degree in 1967 from Allahabad University. BE (Mech), from SVNIT, Surat, Gujarat in 1972; ME from MNNIT, Allahabad in 1988 & PhD in 2011 from UPTU, Lucknow. He received many accolades like; 3-Limca Book Records-2014, 2015 & 2017, wrote 18 books & 153 papers.