In this paper we describe the concept of sensor networks and its applications. A review of factors influencing the energy consumption and energy conserving methods is provided. Energy consumption can only be reduced significantly by switching the radio to a sleep state when it is idle. We observe that under light traffic conditions (as is usually the case… (More)
We combine a simple energy model of radio trans-ceivers with analysis of ad-hoc routing to optimize system performance. A simple example of a linear wireless ad hoc sensor network is used to deduce the relationship between traffic load and optimal radio range of topology management schemes. We find that half of the power can be saved if the radio range is… (More)
We present a simple method for improving time synchronisation suitable for use in ad-hoc sensor networks where processing power is limited. The technique is local and uses Bayesian estimation. A simple simulation shows an improvement of an about four times.
Data discretization is an important task for certain types of data mining algorithms such as association rule discovery and Bayesian learning. For those algorithms, proper discretization not only can significantly improve the quality and understandability of discovered knowledge, but also can reduce the running time. We present a Global Unsupervised… (More)