01555nas a2200145   4500008004100000245004700041210004700088260003000135520107600165100002301241700002801264700002501292700002101317856007101338       2015                        eng d00aBinary Relations in Educational Ontologies0 aBinary Relations in Educational Ontologies  aCraiova, Romaniac09/20153 a<p style="text-align: justify;">The Hellenic Open University’s mission is to provide distance education at both undergraduate and postgraduate level, developing and implementing appropriate educational materials and teaching methods. For this purpose, educational ontologies are constructed, which are classified into anthologies of Learning Outcomes (LO), Learning Objects (LOb) and Cognitive &nbsp;Domains (CoD). In contrast to the conceptualization and implementation of LO and LOb ontologies, based on standards available in the literature, the CoD ontologies involve subjectivity derived from the analysis of basic concepts of each CoD and relational expressions that experts use in order to associate these &nbsp;basic concepts. This subjectivity can create inconsistent ontologies. The aim of this paper is to establish a minimum set of binary relations to be used in the official representation of CoD. These relations are presented by experts with proposals consisting of triples (subject, verb, object) and classified into a Binary Relation (BR) ontology.</p>1 aSeremeti, Lambrini1 aAggelopoulou, Nikolitsa1 aPierrakeas, Christos1 aKameas, Achilles  uhttp://pubs.eap.gr/content/binary-relations-educational-ontologies00476nas a2200109   4500008004100000245008300041210006900124100002000193700002600213700002500239856010200264       2005                        eng d00aEvaluating e-Learning & Distance Learning Functionality (The Greek Experience)0 aEvaluating eLearning Distance Learning Functionality The Greek E1 aGiannelou, Olga1 aStyliadis, Athanasios1 aPierrakeas, Christos  uhttp://pubs.eap.gr/content/evaluating-e-learning-distance-learning-functionality-greek-experience