In context-aware systems, one of the main challenges is how to model context uncertainty well, since perceived context always yields uncertainty and ambiguity with consequential effect on the performance of context-aware system. To handle uncertainty in context-aware systems, firstly, we should know from where uncertainty comes. In this paper, we argue that uncertainty comes from several source...

Emotion is a dynamic variable that modulates how we perceive, reason about, and interact with our environment. Recent studies have established that emotion’s influence carries to data analysis and visualization, impacting performance in ways both positive and negative. While we are still in the infancy of understanding the role emotion plays in analytical contexts, advances in physiological sen...

This paper explores the role of cues in manipulating attention with the purpose of understanding their potential value to attention aware systems design. Four dimensions of attentional processing are presented along which recent findings in the attention literature can be conceptualised: (1) Locus of control; (2) Spatial cue information; (3) Semantic cue information; (4) Timing of the cue. We s...

Context–aware systems use data obtained from various sources to adapt and provide services of interest to the user according to their needs, location or interaction with the environment. However, the use of heterogeneous sources creates a large volume of data that may differ in format, transmission speed and may be affected by environmental noise. This generates some inconsistency in the data, ...

The increasing use of personal in-car technologies has created more opportunities for driver distraction. Communication and navigational systems exact a high cognitive price for the assistance they provide to the driver. Starting from existing research in the areas of augmented reality and context-aware systems, this paper proposes a system designed to assist the driver in the primary task whil...

Aspects sometimes conflict between them in scenarios where they reify resource awareness concerns. These conflicts are the result of the scarcity of resources and the fact that, frequently, aspects are mutually oblivious. This kind of conflict can be solved by managing aspects according to the context. Obliviousness can be retained and, at the same time, specific (per situation) conflict resolu...

The provision of context-aware services in terms of the anytime/anywhere/anymedia paradigm requires the consideration of certain context information in terms of, e.g., time, location, device, and user’s preferences. These various context information will often be provided through a series of various sources being available in diverse formats and standards, e.g. device profiles, user databases, ...

Context-aware systems represent extremely complex and heterogeneous systems. The need for middleware to bind components together is well recognized and many attempts to build middleware for context-aware system have been made. One of the goal of this paper is to provide a general introduction about the evolution of the middlewares and than to proceed with an analysis of the requirements and the...

We introduce a first-order extension of dynamic logic (FO-DL), suitable to represent and reason about the behaviour of Data-aware Systems (DaS), which are systems whose data content is explicitly exhibited in their description. We illustrate the expressivity of the formal framework by modelling English auctions as DaS and by specifying relevant properties in FO-DL. Most importantly, we develop ...