Although the notion of negotiation has been used extensively in secure communication protocols to establish common keying states, protocol modes and services, this notion is only now emerging in the area of access control policies. In this paper, we review the motivation for access policy negotiation and we provide some examples of use in practice. In particular, we illustrate the meaning, the ...

Communities of practice require many specialized communication services, including customized workflow management systems, discussion services, and knowledge management systems. Communication ambiguities create a mismatch between these services and community requirements, and are caused by unclear (e.g. incomplete, inconsistent, overlapping) definitions of communication patterns. These are sets...

With the current availability of state-of-the-art technology, particularly the Internet, people have expanded their channels of communication. This has similarly led to many people utilizing technology to learn second/foreign languages. Nevertheless, many current computer-assisted language learning (CALL) programs still appear to be lacking in interactivity and what is termed social presence, w...

This paper describes an automatic algorithm of meaning negotiation that enables semantic interoperability between local overlapping and heterogeneous ontologies. Rather than reconciling differences between heterogeneous ontologies, this algorithm searches for mappings between concepts of different ontologies. The algorithm is composed of three main steps: (i) computing the linguistic meaning of...