Assistant Professor
Ph.D., Ohio State University , 2007
M.S., Ohio State University , 2002
B.E., University of Madras , 1999
Personal Web-Site: http://web.mst.edu/~chellaps/  

Areas of Interest

Social Networks, Mobility in Sensor and Wireless Networks, Security in Sensor Networks, Security in Overlay and Peer to Peer Networks.

The imprints of Computer Science have permeated many facets of life today. My research broadly focuses on computer  networking, wherein I work on problems in the areas of social networking, mobility and security in rapidly evolving networks like wireless networks and large scale distributed systems. Some representative questions that my research addresses are: how can human behavior be gleaned from Internet usage, how can a bunch of tiny mobile wireless sensing devices deployed in a battlefield cooperate for tasks like intrusion detection; how can already known user mobility patterns be used to detect unauthorized usages of wireless cell phones; how to design new graphics based network authentication schemes that are much more resistant to disclosure than traditional text based passwords. For addressing the above problems, I focus on developing both sound theoretical frameworks and high performing  algorithms. The above problems are exciting, challenging and very useful to study, with a host of applications and impacts immediately awaiting them. My research is supported by grants from the National Science Foundation, Department of Education, University of Missouri Research Board, University Transportation Center and Army Research Office.

Selected Publications

Raghavendra Kotikalapudi, Sriram Chellappan, Frances Montgomery, Donald Wunsch and Karl Lutzen “Associating Depressive Symptoms in College Students with Internet Usage Using Real Internet Data” to appear in IEEE Technology and Society Magazine.

Wenjun Gu, Sriram Chellappan, Xiaole Bai and Hongang Wang, “Scaling Laws of Key Pre-distribution Protocols in Wireless Sensor Networks”, in IEEE Transactions on Information Forensics and Security, Dec 2011.

Wenjun Gu, Neelanjana Dutta, Sriram Chellappan and Xiaole Bai, “Providing End-To-End Secure Communications in Wireless Sensor Networks”, in IEEE Transactions on Network and Service Management, Oct 2011.

Xiaole Bai, Lei Ding, Jin Teng, Sriram Chellappan, Changqing Xu and Dong Xuan. “Directed Coverage in Wireless Sensor Networks: Concept and Quality”, in Proc. of the Sixth IEEE International Conference on Mobile Ad-hoc and Sensor Systems (MASS), 2009.

Neelanjana Dutta, Abhinav Saxena and Sriram Chellappan, “Defending Wireless Sensor Networks Against Adversarial Localization”, Invited Paper in International Workshop on Mobile P2P Data Management, Security and Trust (MP-DMST) in conjunction with Proc. of International Conference on Mobile Data Management (MDM), May 2010.

Vamsi Paruchuri, Arjan Durresi and Sriram Chellappan, “TTL based Packet Marking for IP Traceback”, in Proc. of  IEEE Global Communications Conference (Globecom), New Orleans, Dec. 2008.


Recent Grants
 
“II-New: Infrastructure to Support Integrated Research and Education in Socially Intelligent Computing at Missouri S&T”, National Science Foundation.

“A Heterogeneous Secure Networking Test-Bed to Counter Explosives”, Army Research Office.

“Resilient IED Detection Sensor Networks Against Location Disclosure Attacks”, Army Research Office

“A Doctoral Program in Security and Privacy in Mobile Social Network Space”, Department of Education