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This book examines the handoff problem of cellular networks in Part I and the Power management problem of sensor networks in Part II. Both problems are key issues in resource allocation and in ensuring quality of service in the respective applications of wireless networks. Handoff from one serving base station to another occurs when certain conditions on signal quality at serving base station are not met. Power management in sensor networks ensures that sensors last longer, and therefore the required quality of information collected from sensors is achieved. Part I will show the...

The expected time of impact, also known as the mean first passage time (MFPT) to reach failure, is a critical metric in the management of natural disasters. The complexity of the dynamics governing natural disasters lead to stochastic behaviour. This book shows that state transitions of many such systems translate into random walks on their respective state spaces, biased and shaped by environmental inhomogeneity. Thus the probabilistic treatment of those random walks gives valuable insights of expected behaviour. A comprehensive case study of predicting cyclone induced flood is followed by a...