Composable Middleware for Open Distributed Systems, Resource Management in Open Distributed Systems, Distributed Multimedia, Networks,Concurrency, Quality of Service Specification and Enforcement, Quality of Service and Economic Theories, Performance Evaluation, Digital Dance and Choreography,
Prof. Venkatasubramanian's research focuses on enabling effective management and utilization of resources in the evolving global information infrastructure. Global information systems consist of asynchronous, autonomous components that are open and distributed. For instance, multimedia (MM) applications may be reliable, available, responsive, and secure or not.
Furthermore, wide-area service providers require cost-effective use of resources. Varying requirements posed by applications, customers, and service providers make the task of resource management in the evolving global information infrastructure complicated and challenging - one with significant commercial impact as well.
NV's research addresses issues in the development of a flexible, component-based middleware infrastructure for the global infrastructure with services that provide reliability, availability, security and QoS.
Using Actors, a model of concurrent active objects, NV develops meta-architectures that allow for placement, scheduling, synchronization and management of components.
NV's research also involves the development of theoretical foundations and techniques for reasoning about interactions and ways of ensuring the safe composition of services while maintaining quality.
Her current work includes techniques for the safe integration of mechanisms for load balancing, fault tolerance and end-to-end QoS management.
NV has worked on policies for cost-effective load management in distributed multimedia servers.
NV has also worked on economic models used to charge for QoS in a distributed multimedia environment and would like to pursue this as well.
Network-centric computing and mobile environments are two interesting applications that NV intends to explore.
NV is also interested in applications of distributed computing and multimedia systems to art and the system level issues that arise from requirements in this domain.
Qi Han and Nalini Venkatasubramanian. "AutoSeC: An integrated Middleware Framework for Dynamic Service Brokering", IEEE Distributed Systems Online 2001, Vol. 2, No. 7, 2001.
Nalini Venkatasubramanian, Carolyn Talcott. " A Semantic Framework for Modeling and Reasoning about Reflective Middleware ", IEEE Distributed Systems Online, Vol. 2, No. 6, October 2001.
Nalini Venkatasubramanian, Carolyn Talcott, Gul Agha, "Formal Reasoning of QoS-Enabled Middleware", In revision, ACM Transactions on Software Engineering and Methodology.
Sandy Irani, Nalini Venkatasubramanian. "Semi-Continuous Transmission for Video Servers", Submitted for publication, 2000.