Support for most of my research projects comes primarily from the National Science Foundation and from industrial partners; most recently Comcast, and in the past companies such as Sprint Labs, Nortel Networks, and Siemens (see individual project pages for details).
The wiki for ESE 680 ( Internet infrastructure threats: Attacks, defenses, and incentives) that I am teaching this semester is available here. Unfortunately, the course can only be accessed by Penn students. Wikis from the last two courses I taught are, however, accessible externally at:
The wiki for my Introduction to Networking class is accessible here.
The wiki for my Advanced Networking Protocols class is accessible here.
My office hours are on Tuesdays from 10:30am till 12:00pm or by appointment.
December 2012: The paper entitled “Online Opinion Formation and Social Interactions,” co-authored with L. Yan, K. Hosanagar, Y. Tan, and S. Venkatesh, was presented at the WITS 2012 Workshop, Orlando, FL, December 2012.
October 2012: The paper entitled “A Distributed Routing Protocol for Predictable Rates in Wireless Mesh Networks,” co-authored with B. Arzani and A. Ribeiro, was presented at the 2012 IEEE ICNP Conference, Austin, TX, October 2012.
July 2012: The paper entitled “Analysis of Slotted ALOHA with Multipacket Messages in Clustered Surveillance Networks” co-authored with S. Sen, D.J. Dorsey, and M. Chiang, has been accepted for presentation at MILCOM 2012, Orlando, FL, October 2012.
March 2012: The paper entitled “Pricing Strategies for User-Provided Connectivity Services,” co-authored with M. H. Afrasiabi was presented at the IEEE INFOCOM 2012 mini-conference, Orlando, FL, March 2012.
Our IPv6 Monitoring project and associated web site are now “officially” live (see the recent presentation -the audio unfortunately only starts about 7 mins into the presentation- at the Summer 2010 ESCC/Internet2 Joint Techs conference). This is a joint project with Comcast and supported by NSF and Comcast (see Comcast's own monitor web site). Send me an email if you are interested in running a local version of the software (please note that this implicitly assumes you are willing to allow uploading of your monitoring data into the global repository maintained at Penn).
Because of pending changes in my own situation, I will not be taking on new students next Fall.
However, there are several strong faculty recruiting students in either “Social and Technological Networks” or “Wired and Wireless Communication Networks,” so you should definitely consider applying to Penn if you are interested in working in either of those areas. The first deals with topics that naturally arise in a “networked” environment where users, technology, services interact in a complex manner and together influence each others as well as the evolution of the entire networked systems. The second area targets more traditional networking issues such as routing, traffic engineering, network protocols and network usage in both wired and wireless networks. Applications can be completed on-line using the ApplyYourself system. The application deadline for Fall 2013 admission is December 15, 2012.
My research has been carried out under the auspices of the Multimedia and Networking Lab; a multi-disciplinary lab involving several faculty and exploring a variety of topics broadly connected by their dependency on “networks.” These topics span the various protocols layers, from the physical layer to the application layer, and embody the many opportunities and challenges behind realizing and leveraging ubiquitous communication. Projects in the lab also often involve a mixture of analysis and experiments, with experiments taking advantage of the several local and global testbeds available, many of which were built using equipment generously donated by industry partners.