Sachin Shetty

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While wireless sensor networks are proving to be a versatile tool, many of the applications in which they are implemented have sensitive data. In other words, security is crucial in many of these applications. Once a sensor node has been compromised, the security of the network degrades quickly if there are not measures taken to deal with this event. There(More)
A Bayesian network model is a popular technique for data mining due to its intuitive interpretation. This paper presents a semantic genetic algorithm (SGA) to learn a complete qualitative structure of a Bayesian network from a database. SGA builds on recent advances in the field and focuses on the generation of initial population, crossover, and mutation(More)
—Time synchronization is a key component in numerous wireless sensor network applications. Most of the current software based time synchronization approaches suffer from communication overhead and lack of scalability. In this paper, we propose a hardware based approach based on voltage controlled crystal oscillator and phase locked loop techniques to(More)
A quick turnaround Sub-Orbital Student Experiment Module sounding rocket experiment has been designed and built to initiate the Old Dominion University wireless spacecraft bus project for the Mid Atlantic Institute for Space and Technology. The sounding rocket was launched on the 8 th of June 2006 from NASA Wallops Flight Facility on Virginia's Eastern(More)
IEEE 802.11b wireless networks and Bluetooth networks provide complimentary services using the same unlicensed radio frequency band. As the benefits of utilizing these services become increasingly apparent, the likelihood of mutual interference also increases. The well-known frequency hopping algorithm and adaptive frequency hopping algorithm do not fully(More)