This paper discusses the general characteristics of the mobile instant messaging market from a competition point of view. Positive feedback and indirect network effects, which strongly influence the mobile instant messaging market, tend to facilitate the development of one quasi-monopoly. Even...

The healthcare enterprises are very disconnected. This paper intends to propose a solution that will provide citizens, businesses and medical enterprises with improved access to medical virtual public services. Referred medical services are based on existing national medical Web services and...

he goal of this article is to formalize Object Role Modeling (ORM) using the DLR description logic. This would enable automated reasoning on the formal properties of ORM diagrams, such as detecting constraint contradictions and implications. In addition, the expressive, methodological, and...