Choosing the best access technology for delivering broadband services, is an important and complex step in moving toward NGN, specially in non-developed and developing countries. This paper, proposes a simple classification of users due to their communicational needs, and recommends the most appropriate access method for each class of users, considering network infrastructure in non-developed a...

Without an environment, an agent is effectively useless. Cut off from the rest of its world, the agent can neither sense nor act. An environment provides the conditions under which an entity (agent or object) can exist. It defines the properties of the world in which an agent will function. Designing effective agents requires careful consideration of both the physical and communicational aspect...

This paper describes an architecture for modeling cooperating systems of communicating agents. The authors’ goal is not that of providing a framework to implement multi-agents systems (there are tools—such as CORBA, Java and DCOM—that do an excellent job on that), but rather to provide an architectural metaphor upon which collaborative multi-agent systems could be modeled. The approach is based...

A secure scheme of restrictive partially blind signature is presented. Our proposed scheme has the following advantages. First, the scheme is secure against the one-more signature forgery under the adaptively parallel attack. Second, the issued signatures can be of polynomial number as comparing with the logarithmic number of previous work. At last, the scheme is with less communicational and c...

Various theoretical approaches to therapy place different emphases on the use of power in therapy. In this study, we explore six master therapists’ use of power via communicational control for theoretical consistency. Results indicate that all therapists, regardless of their stance on power, use the role of therapist to exert power in an initial therapy session. Master therapists, in general, d...

Based on a literature review, this article discusses the physician-patient relationship by presenting anthropological and communicational approaches, physicians' experiences as patients, key concepts showing the need for humanization of the patient-physician relationship, and some theoretical-philosophical reflections relating primarily to hermeneutics. Based on this framework, one can already ...