Context Several strategies have been used to implement context reasoning, and a strategy
that can be applied satisfactorily in different smart systems applications has not yet been …

This paper presents a semantic knowledge-based context-aware smart border surveillance
system to monitor suspicious activities across the border or nearby red zones and assists in …

Ubiquitous systems have become an important and even essential part of our daily life. For
instance, smart homes are good examples where such systems can be found. However, the …

Almost 20 years ago, Marc Weiser envisioned the prospect of computer in 21st century, and
proposed the pioneering notion of ubiquitous computing. One of Weiser's primary ideas has …

Miniaturization of smart devices and sensors, as well as widespread use of new interaction
modalities make Ambient Intelligence (AmI) not a prospect for the future but an impending …

Context-aware middleware is considered as an efficient solution to develop context-aware
application, which provides a feasible development platform integrating various sensors and …

Recently,'activity'context draws increased attention from researchers in context awareness.
Existing context-aware middleware usually employ the rule-based method to, which is easy …

A computação ubíqua é um paradigma no qual dispositivos com capacidade de
processamento e comunicação são embutidos nos elementos comuns de nossas vidas …

I owe my supervisor, Prof. Bertrand David, my eternal gratitude. He has advised,
encouraged, and inspired me through the arduous doctoral process. He provided the …

School children from 6 to 12 years have characteristics of trying new things, lack of complete
reasoning ability and staying in a group. It is easier for them to be in dangerous situations …