Intrusion detection system using optimum-path forest

Intrusion detection systems that make use of artificial intelligence techniques in order to improve effectiveness have been actively pursued in the last decade. Neural networks and Support Vector Machines have been also extensively applied to this task. However, their complexity to learn new attacks has become very expensive, making them inviable for a real time retraining. In this research, we introduce a new pattern classifier named Optimum-Path Forest (OPF) to this task, which has demonstrated to be similar to the state-of-the-art pattern recognition techniques, but extremely more efficient for training patterns. Experiments on public datasets showed that OPF classifier may be a suitable tool to detect intrusions on computer networks, as well as allow the algorithm to learn new attacks faster than the other techniques. © 2011 IEEE.

Infrastructure and economic growth in Peru

Includes bibliography

Construction of perfect space-time codes

In this work, we propose an innovative methodology to extend the construction of minimum and non-minimum delay perfect codes as a subset of cyclic division algebras over ℚ(ζ3), where the signal constellations are isomorphic to the hexagonal An 2 -rotated lattice, for any channel of any dimension n such that gcd{n, 3) = 1.

Ambiente computacional para projetos de sistemas com tecnologia mista

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Sociedade em rede: faces virtuais da ideologia capitalista do século XXI

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A digitalização da televisão pública: um estudo do caso da multiprogramação na TV Cultura

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Contratos de concessão entre o estado brasileiro e empresas transnacionais de telecomunicações: casos da EMBRATEL/MCI e TELESP/Telefônica Internacional

Pós-graduação em Direito - FCHS

A evolução recente do setor de telefonia móvel: oportunidades e restrições para o desenvolvimento endógeno no Brasil

Pós-graduação em Economia - FCLAR

Evaluación del potencial de reducción de gases de efecto invernadero (GEI) y producción de energía a partir de rellenos sanitarios y vertederos en ciudades de Costa Rica

Incluye Bibliografía

Efeitos de maré no movimento orbital de satélites artificiais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

As relações políticas e econômicas entre Brasil e Espanha da transição democrática a nossos dias

Pós-graduação em Relações Internacionais (UNESP - UNICAMP - PUC-SP) - FFC

The digital economy for structural change and equality

Includes bibliography.

The advance of cloud computing

The “Implementation of the National Data Centre” project, Augusto Espín, Deputy Minister of Telecommunications and Information Society, Ecuador .-- Cloud computing and public policy in Brazil, Rafael Henrique Rodrigues Moreira, Ministry of Science, Technology and Innovation, Brazil .-- “The cloud is being taken up more quickly in Latin America than in the rest of the world”, interview to Lalo Steinmann, Microsoft .-- The impact of education and research networks on the development of cloud computing Eduardo Vera, University of Chile .-- “The cloud helps to narrow divides by providing access to technology resources that used to be unaffordable”, interview to Luis Urzúa, Movistar Chile .-- “Cloud computing will be a strategic sector of the economy in the coming years”, interview to Jean-Bernard Gramunt, France’s digital strategy .-- “If take-up in Latin America is as strong as predicted, it will be a good opportunity to create and export technology”, interview to Flavio Junqueira, Yahoo! Labs.

Identification of predominant economic agents and asymmetric regulation

In recognition of the telecommunications industry’s increasing importance for the growth and competitiveness of Latin American countries, this edition of the FAL Bulletin is based on the presentation given by Mr. Patricio Rozas of the Infrastructure Services Unit of the Economic Commission for Latin America and the Caribbean (ECLAC), at the International Forum on New Telecommunications and Broadcasting Models, organized by the Senate of the Republic of Mexico and held in Mexico City between 28 and 30 October 2013.