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In the last few years, various middleware solutions have been proposed for bridging the gap between the complexity of the applications and the low hardware abstraction in order to program and manage the sensor nodes of the wireless sensor networks. The proposed middleware range from market and data- centric approaches to message oriented middleware. This(More)
Radio frequency identification (RFID) is one of the automatic identification technologies more in vogue nowadays. There is a wide research and development in this area trying to take maximum advantage of this technology, and in coming years many new applications and research areas will continue to appear. This sudden interest in RFID also brings about some(More)
— Sensor networks have been referred to as part of the background infrastructure required to achieve ubiquitous computing. This has recently promoted a considerable amount of attention from the research community that concluded that existing protocols and techniques for service discovery, such as JINI or UPnP are not suitable for the case of resource poor,(More)
This work presents an admission control mechanism to be used with mapping mechanisms between integrated services (IntServ) and differentiated services (DiffServ) domains. The mapping mechanisms have a dynamic nature and are associated with the admission control functions in such a way that the state of the network is reflected in the admission decisions of(More)
The technological advances in medical sensors, low-power microelectronics and miniaturization, wireless communications and networks have enabled the appearance of a new generation of wireless sensor networks: the so-called wireless body area networks (WBAN). These networks can be used for continuous monitoring of vital parameters, movement, and the(More)
Fire keeps claiming a large number of victims in building fires. Although there are ways to minimize such events, fire drills are used to train the building occupants for emergency situations. However, organizing and implement these exercises is a complex task, and sometimes not sucessfull. Furthermore, fire drills require the mobilization of some finantial(More)