Panorama digital 2007 de América Latina y el Caribe: avances y desafíos de las políticas para el desarrollo con las tecnologías de información y comunicaciones

Incluye Bibliografía

Estrategias nacionales para la sociedad de la información en América Latina y el Caribe

Incluye Bibliografía

Centros de acceso público a las tecnologías de información y comunicación en América Latina: características y desafíos

Incluye Bibliografía

Benchmarking the plan of action of the World Summit on the Information Society (WSIS) in Latin America and the Caribbean (version 3.0)

Includes bibliography

From industrial economics to digital economics: an introduction to the transition

Includes bibliography

Latin America on its path into the digital age: where are we?

Includes bibliography

Toward a conceptual framework and public policy agenda for the information society in Latin America and the Caribbean

Includes bibliography

Automatic visual dictionary generation through Optimum-Path Forest clustering

Image categorization by means of bag of visual words has received increasing attention by the image processing and vision communities in the last years. In these approaches, each image is represented by invariant points of interest which are mapped to a Hilbert Space representing a visual dictionary which aims at comprising the most discriminative features in a set of images. Notwithstanding, the main problem of such approaches is to find a compact and representative dictionary. Finding such representative dictionary automatically with no user intervention is an even more difficult task. In this paper, we propose a method to automatically find such dictionary by employing a recent developed graph-based clustering algorithm called Optimum-Path Forest, which does not make any assumption about the visual dictionary's size and is more efficient and effective than the state-of-the-art techniques used for dictionary generation. © 2012 IEEE.

Stable singularities of co-rank one quasi homogeneous map germs from (ℂn+1, 0) to (ℂn, 0), n = 2, 3

In this article, we investigate the geometry of quasi homogeneous corank one finitely determined map germs from (ℂn+1, 0) to (ℂn, 0) with n = 2, 3. We give a complete description, in terms of the weights and degrees, of the invariants that are associated to all stable singularities which appear in the discriminant of such map germs. The first class of invariants which we study are the isolated singularities, called 0-stable singularities because they are the 0-dimensional singularities. First, we give a formula to compute the number of An points which appear in any stable deformation of a quasi homogeneous co-rank one map germ from (ℂn+1, 0) to (ℂn, 0) with n = 2, 3. To get such a formula, we apply the Hilbert's syzygy theorem to determine the graded free resolution given by the syzygy modules of the associated iterated Jacobian ideal. Then we show how to obtain the other 0-stable singularities, these isolated singularities are formed by multiple points and here we use the relation among them and the Fitting ideals of the discriminant. For n = 2, there exists only the germ of double points set and for n = 3 there are the triple points, named points A1,1,1 and the normal crossing between a germ of a cuspidal edge and a germ of a plane, named A2,1. For n = 3, there appear also the one-dimensional singularities, which are of two types: germs of cuspidal edges or germs of double points curves. For these singularities, we show how to compute the polar multiplicities and also the local Euler obstruction at the origin in terms of the weights and degrees. © 2013 Pushpa Publishing House.

Avaliação e implementação de métodos de estimação de tempo de atraso de sinais de ultra-som

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Elementos algébricos para a noção de poucos e sua formalização em sistemas lógicos dedutivos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Sobre quantificadores: uma formalização do quantificador 'quase sempre'

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Teorias duais massivas de spin-2 em D=2+1 via ação mestra e imersão de Noether

Pós-graduação em Física - FEG

Development trends and challenges for local e-governments: evidence from municipalities in Chile and Peru

Includes bibliography

Controle exato para a equação de onda: o método HUM

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)