Made available in DSpace on 2016-08-29T15:33:21Z (GMT). No. of bitstreams: 1 tese_8607_MSC Thesis - Diorbert - FINAL(1).pdf: 3922223 bytes, checksum: b3e393525cb2dc99d26745cd7397ee7b (MD5) Previous issue date: 2015-02-27 / Enterprise Architecture (EA) promotes the establishment of a holistic view of the structure and way of working of an organization. One of the aspects covered in EA is associated with the organizations active structure, which concerns who undertakes organizational activities. Several approaches have been proposed in order to provide a means for representing enterprise architecture, among which ARIS, RM-ODP, UPDM and ArchiMate. Despite the acceptance by the community, existing approaches focus on different purposes, have limitations on their conceptual scopes and some have no real world semantics well-defined. Besides modeling approaches, many ontology approaches have been proposed in order to describe the active structure domain, including the ontologies in the SUPER Project, TOVE, Enterprise Ontology and W3C Org Ontology. Although specified for semantic grounding and meaning negotiation, some of proposed approaches have specific purposes and limited coverage. In addition, some of them are not defined using formal languages and others are specified using languages without well-defined semantics. This work presents a well-founded reference ontology for the organizational domain. The organizational reference ontology presented covers the basic aspects discussed in the organizational literature, such as division of labor, social relations and classification of structuring units. Further, it also encompasses the organizational aspects defined in existing approaches, both modeling and ontology approaches. The resulting ontology is specified in OntoUML and extends the social concepts of UFO-C.