An Ontology-Based Approach to Context Modeling and Reasoning in Pervasive Computing - Ejigu, Dejene; Scuturici, Marian; Brunie, Lionel (Fifth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PerComW'07), Pervasive Computing and Communications Workshops, 2007. PerCom Workshops '07. Fifth Annual IEEE International Conference on, 2007)