Experience in preparing Web content for people with visual disabilities shows that automatic testing of accessibility is clearly insufficient to meet real-world demands, and that ...
— Most e-learning systems require intervention from a teacher. The development of adaptive hypermedia systems, such as intelligent tutoring systems, aimed to reduce the teachersâ...
This paper proposes a calculus for describing communication-centred programs and discusses its use through a formal description of several use cases from real business protocols. ...
We present a proposal for research, development and construction of international communities in Portuguese, using digital platforms. The idea was born following an international ...
In this paper we deal with the problem of addition of new documents in collection when documents are represented in lower dimensional space by concept indexing. Concept indexing i...