Based on XYZ/E language, the moving communicational supervisor control system(MCSCS) based on component technology is introduced in the paper. The authors presented the system architecture and gave its XYZ/E description briefly, discussed separately that central supervision center is case of server and case of both client and server, gave the data transmission program of the XYZ/E description b...

In the secure group communication, data is transmitted in such a way that only the group members are able to receive the messages. The main problem in the solution using symmetric key is heavy re-keying cost. To reduce re-keying cost tree based architecture is used. But it requires extra overhead to balance the keytree in order to achieve logarithmic re-keying cost. The main challenging issue i...

This article presents a partial report of research on the Brazilian Amazon, entitled Ciranda de Manacapuru as metaphor for Amazon: signs touristic, communicational, and subjective ecosystem region. is popular dance festival that takes place every year in August municipality Manacapuru, located Metropolitan Region Manaus, state Amazonas, northern Brazil. an event promoted by State local governme...

Web-based information systems aim to enable people to live and do things in society with help of computer systems on internet. User interfaces and navigation structures of these systems become more important and critical than the ones of traditional information systems to the user because of the nature and specific characteristics of these systems. The experiences on requirements analysis and s...

An efficient and secure group communication in Mobile Adhoc Network (MANETs) has brought attention to many security issues. In this paper, we propose Energy Efficient Dynamic Core based Multicast Routing Protocol to establish the path between the nodes that participate in group communication. During the routing process each node computes a Pythagorean Triple and constructs a Pythagorean Triple ...

The real Cloud and Ubiquitous Manufacturing systems require effectiveness and permanent availability of resources, their capacity and scalability. One of the most important problems for applications management over cloud based platforms, which are expected to support eficient scalability and resources coordination following SaaS implementation model, is their interoperability. Even application ...

The improvement of the Brazilian system of interactive Digital Television (iDTV) has amplified usage perspectives for television in the educational realm, due to new possibilities of interaction. Thus, there is a growing discussion over the development of educational content that will address the needs of this new reality. The present article describes concepts of the technological, communicati...

As traditional oblivious transfer protocols are treated as a cryptographic primitive, they are usually executed without the consideration of possible attacks, e.g., impersonation, replaying, and man-in-the-middle attacks. Therefore, when these protocols are applied in certain applications such as mental poker playing, some necessary mechanism must be executed first to ensure the security of sub...