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The development and deployment of robust and highly populated Wireless Sensor Networks require addressing a wide variety of challenges. Among them, the synchronization and energy management of the nodes composing the network have been identified as two challenges to overcome. In this paper, we follow a cross-layer approach by defining a synchronous engine(More)
Jugular catheters were inserted in nine male rats under general isofluorane anesthesia and the catheters were connected to a commercially available computerized blood sampling device (Accusampler). Blood samples (150 microl) were collected every 4 h during the first 24 h after surgery and every 12 h during the following 72 h until 94 h after surgery, when(More)
We consider reliable communications in Body Area Networks (BAN), where a set of nodes placed on human body are connected using wireless links. In order to keep the Specific Absorption Rate (SAR) as low as possible for health safety reasons, these networks operate in low transmit power regime, which however, is known to be error prone. It has been observed(More)
The concept of Smart Cities has recently attracted considerable attention. The basic idea about making a city as smart is to use communication technology to optimize a city's resource consumption. There are interesting research opportunities oriented to innovative applications and services based on Future Internet. Networked interaction will be a priority(More)
The stress associated with transportation of non-human primates used in scientific research is an important but almost unexplored part of laboratory animal husbandry. The procedures and routines concerning transport are not only important for the animals' physical health but also for their mental health as well. The transport stress in cynomolgus monkeys(More)
—The deployment of large-scale wireless sensor networks presents major challenges whose solution requires the design and development of robust and time-efficient protocols. In this work, we focus on the design of an efficient and robust protocol aiming to rapidly configure highly populated networks. Our main effort goes towards the definition of a fast(More)
— The task of routing data from a source to the sink is a critical issue in ad hoc and wireless sensor networks. In this paper, the use of fuzzy logic to perform role assignment during route establishment and maintenance is proposed. An intelligent role-based approach is presented and compared with similar existing routing protocols. Experiments show(More)
ZigBee in conjunction with IEEE 802.15.4 is considered the de facto standard for WSNs. The routing protocol for ZigBee mesh networks is AODV, an on-demand routing protocol which has been extensively used. However, it presents critical problems when it is used in large dense networks, mainly related to the high number of messages necessary to perform routing(More)
Integration of algorithms and protocols from different layers will make possible the deployment of large-scale wireless sensor networks which are the basis of interesting monitoring applications. The growing number of nodes that comprise within these networks requires a correct organization and efficient node synchronization to ensure data reliability. In(More)