Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal

Authentication techniques for a large-scale network are essential for the booming applications of e-commerce and e-business. In this thesis, authentication techniques for a larger-scale network are discussed. In-deep discussions on the independent path technique are presented. An authentication protocol based…

Nesse contexto de ambiente de informação, acesso e extração de informações gerenciais da base de dados do sistema Sabiia, o projeto definiu como objetivo estratégico o uso de soluções livres de BI para obtenção de informações e respostas gerenciais, tais…

In the context of an object-oriented programming language such as Java, the ubiquitous use of instance fields and the presence of pointers (references to objects) make it difficult to understand a program's memory usage. Understanding memory usage is a key…

O Laboratório Multiusuário de Bioinformática (LMB) da Embrapa, implantado na Embrapa Informática Agropecuária em outubro de 2011, é uma iniciativa que se propôs a integrar competências multidisciplinares e elevada capacidade computacional para atender as demandas em Bioinformática dos projetos da…

El desarrollo de Sistemas Multi-agente es un problema complejo, su resolución generalmente involucra el análisis de problemas típicos de sistemas distribuidos, con entidades (agentes) que negocian, tienen la capacidad de aprendizaje, etc. Las soluciones existentes van desde desarrollos de cero…

Mobile agents are often described as a promising technology moving towards the vision of a widely distributed scalable electronic market. The deployment of electronic services, especially in the area of electronic commerce, raises essential questions closely related to security issues.…

Virtual method calls are a fundamental feature offered by Java, an object-oriented programming language. However, they are also a source of degradation of performance at run time and imprecision in interprocedural analyses. There are several well known, inexpensive analyses that…

Currently, the telecommunications management systems are powerful, however, maintain centralized and proprietary platforms, limiting this way, the growth of these telecommunications networks. This factor generates the need for scalable and open systems, stimulating the sectors of the telecommunications area to…

In this article we present a performance comparison of four symmetric block ciphers namely DES, Triple-DES, AES, and Blowfish. Performance evaluation based on CPU execution time is conducted under WinXP and Ubuntu /Linux version 8.10 operating system platforms. The study…