Management and Application of Sensor Networks Kang G. Shin EECS Department The University of Michigan Abstract: Under the auspices of DARPA, NSF, ONR and industry, we have been developing middleware for securely managing sensor networks for environment monitoring. This talk will begin with the generic aspects of sensors networks, and then describe details of our current research that covers adaptive query processing (AQP), minimum-cost routing, and security. Sensor networks, built with thousands of small and smart sensor nodes, may be deployed for various applications, which usually require a certain pre-specified network lifetime. I will first describe a hierarchical architecture for query processing in such sensor networks, and then focus on energy-aware adaptive query processing. Especially, I will present (1) a cost-based query allocation algorithm that minimizes the total power consumption by maximizing cost sharing among different queries; and (2) an energy-aware Quality-of-Service (QoS) adaptation algorithm that gracefully makes tradeoff between total power consumption and total QoS of all queries when node availability or workload changes. Among many others, efficient routing between sensor nodes and protection sensor nodes and information exchanged between them are essential to support applications like AQP. Hence, the second part of my talk will deal with these two issues.