My research interests include studies in Computational Molecular Biology, Computer Network Security, Data & Communication Networks, Distributed & Mobile Agent Computing, Wireless Ad Hoc & Sensor Networks. For additional details on all these topics please look at my list of publications.

Communication Networks

Investigatons focus on fundamental issues in Network Computing. Of interest are distributed computations in distributed/data networks, (as well as, ad-hoc, wireless, sensor) peer-to-peer computing as well as social networks and small world phenomena. Communication complexity is studied and solutions are sought that optimize the parameters involved. The distributed systems investigated involve a broad range of assumptions concerning synchronicity, fault tolerance, anonymity of processors, as well as local and global awareness. Design options are mathematically analyzed and sometimes evaluated with simulation results in order to study the effects of the different protocol mechanisms.

Network Security

The flow of data through a system is greately affected by the presence of high security gateways and web servers. Aim of the research will be the study and analysis of the performance of a network when services and documents are made remotely accessible (e.g., on the web) in a secure way. Our methodology will use a combination of paradigms, including mobile agents, smart packets, distributed objects in order to create a trusted multi-level operating environment. Of particular interest are DDoS attacks, intrusion detection systems, and related security issues in modern computer environments, like ad-hoc and wireless networks, RFIDs, etc.

Wireless Networks

The crucial questions that underlie the efficiency and security of communication in wireless networks involve architectural, methodological and coordination issues. Some of the questions we will try to answer in the long term include: What characteristics of the wireless nodes and what wireless topological and architectural designs will play a significant role in the development of efficient algorithms? What methodologies should be explored in order to turn the inherent locality of information in a wireless system to an advantageous design paradigm? How do we coordinate wireless processes in order to establish efficient and secure communication channels and provide privacy and authentication? Resolution of these questions will address efficiency analysis and communication security and also lead to new paradigms.

Computational Molecular Biology

Of interest are asymptotic problems of RNA secondary structures, random and viral RNA, folding energies, as well as fundamental problems on biological networks.