Orlando R. E. Pereira

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A body sensor network is a network of small sensor devices (biosensors) that sense health parameters of an individual, allowing 24/7 monitoring, providing biofeedback services. These networks have typically two layers: the sensor array and a sink node. The sink node manages the network, gathering sensor data continuously. However, raw sensor data is not(More)
Wireless sensor networks span from military applications into everyday life. Body sensor networks greatly benefit from wireless sensor networks to answer the biofeedback challenges in healthcare applications. In such applications, data is of fundamental importance, it must be reliable and within easy reach. However, most solutions rely on a personal(More)
Distance learning, electronic learning, and mobile learning offer content, methods, and technologies that decrease the limitations of traditional education. Mobile learning (m-learning) is an extension of distance education, supported by mobile devices equipped with wireless technologies. It is an emerging learning model and process that requires new forms(More)
The combination of body sensor networks (BSNs) and mobile devices brings a personalized health monitoring opportunity to patients and medical teams. Mobile devices may be used to process and present data collected by BSN sensors in an easy and meaningful way to users. The mobility of such systems improves patients’ quality of life, enabling continuous(More)
Biofeedback data acquisition is an extremely important task in body sensor networks (BSNs). Data collected by sensors need to be processed in order to be shown in an easy and meaningful way for the user. The use of mobile devices may support and offer new user experiences. When connected to a BSN they can aggregate and process data collected by each sensor,(More)
Recently, Google launched the Android mobile operating system and several mobile devices already support it. This paper proposes a mobile Android-enabled tool for collecting, monitoring, and analyzing intra-vaginal temperature. A previous proposed intra-vaginal sensor acquires temperature values and sends the collected data to Android device over a(More)
This paper presents a novel architecture for communication protocols that takes advantage of object mobility, allowing applications to specify the behavior of protocols for each individual message. This is achieved by opening the implementation of protocols and letting the application program associate a set of possibly customized meta-objects to every(More)
Learning processes and learning mechanisms are constantly evolving. The traditional classroom boards are replaced by Internet technologies, while the old handwritten notes are progressing to electronic notes. Through this evolution offered by new technologies, such as Web 2.0 and mobile and ubiquitous computing, learning agents need to adjust to this new(More)