This paper describes a system for context awareness in smart environments, which is based
on an ontology expressed in description logic and implemented in OWL 2 EL, which is a …

In the ubiquitous computing environment, context reasoning is an important issue of context-
awareness. It is used to deduce desired or higher-level context and then to provide suitable …

This article merges two approaches: one dealing with persistence for logic programs, as
provided by a relational database back-end and another which addresses the issues of logic …

The importance of temporal representation and reasoning is well known not only in the
database community but also in the artificial intelligence one. Contextual Logic …

The amount of electronically accessible information has been growing exponentially. How to
effectively use this information has become a significant challenge. A post 9/11 study …

In the last decades the number of information centers that receive data from different origins
or technologies has increased enormously. Representing and reasoning with temporal data …

Abstract Current Organisational Information Systems (OIS) deal with more and more
Information that, is time dependent. In this work we provide a framework to construct and …

A SPARQL Query Engine over Web Programming Page 1 § Master Degree in Computer Science
Mestrado em Engenharia Informática Asparql Query Engine over Web Ontologies, using …