Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. National Conference on Mathematical and Computational Models (NCMCM) is a national level applied mathematics conference organized by Department of Mathematics and Computer Applications, PSG College of Technology, Coimbatore, India every other year. It is a national level technical conference sponsored by the Defence Research and Development Organisation, Ministry of HRD and PSG Institutions. The conference attracts large number of original technical papers from all over India and the world. The conference is open to academia as well as to industry. The next conference is due to take place on December 2009.