Sameer Sundresh

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Recent advances in micro electro-mechanical systemsand VLSI lithography have enabled the miniaturizationof sensors and controllers. Such minitiarization facilitatesthe deployment of large-scale wireless sensor networks(WSNs). However, the considerable cost of deployingand maintaining large-scale WSNs for experimental purposesmakes simulation useful in(More)
The process of determining the physical locations of nodes in a wireless sensor network is known as <i>localization</i>. Self-localization is critical for large-scale sensor networks, because manual or assisted localization is often impractical due to time requirements, economic constraints, or inherent limitations of the deployment scenarios. We propose(More)
We present <i>actorNet</i>, a mobile agent platform for wireless sensor networks (WSNs). WSNs are well-suited to multiagent systems: agent autonomy reduces the need for communication, saving precious energy. Mobile agents are also an intuitive technique for remotely reprogramming sensors deployed in the field. However, implementing agent programs directly(More)
We present a novel method for tracking the movement of people or vehicles in open outdoor environments using sensor networks. Unlike other sensor network-based methods, which depend on determining distance to the target or the angle of arrival of the signal, our cooperative tracking approach requires only that a sensor be able to determine if an object is(More)
Localization is the process by which sensor networks associate spatial position information with individual sensors’ measurements. While manual surveying is sufficient for small-scale prototypes, it is too time-consuming and costly for the large-scale deployments anticipated in the near future. Our experiments with medium-scale outdoor sensor network(More)
Wireless sensor-actuator networks can provide the ability to continuously monitor the integrity of structures in real-time, detect damage at an early stage, and provide robustness in the case of catastrophic failures with a fraction of cost associated with today’s wired networks. However, sensor-actuator networks require a new paradigm of computing—one(More)
A pervasive computing system requires the integration of computation and communication with physical objects in the environment. The <i>Ambiance</i> project is building a platform for Macro-programming pervasive systems based on an Adaptive Object-Model; the platform provides a meta-level architecture to analyze the execution context and customize the(More)
ion, this results in an inherent asymmetry of upward vs. downward events. The properties of downward events described in the previous section do not hold for upward events; in fact the properties of upward events are essentially complementary to those of downward events: 1. Upward events need not be yielding. While the simple formulation of Handler in(More)