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The work presents an account of the history of computerization of the Brazilian academic libraries under the particular history of the Universidade Federal do Rio de Janeiro libraries, since 1968 until today. Discusses the systems developed and used by libraries over the years and their changes. Recounts the experiences lived by integrated teams of analysts and librarians, the growing need for modernization...
In this paper, a new method for systolic peak detection of pulse wave signals is presented. This method is based on the detection of each peak by the correlation with adaptive Gaussian function template (GFT). The point of maximum correlation is selected as a systolic peak. Its accuracy and noise robustness were evaluated over a set of annotated signals (arterial blood pressure) from CSL database...
This article describes the efforts of the Brazilian Software industry to export its products. The companies reunited in its category's association, the ASSESPRO - Association of the Brazilian Companies of Software and Services, motivated by the competition with foreign enterprises in the home market, got organized to spread internationally its products, participating in major computing events. The...
A development of a Radial Basis Function Neural Network applied to the prostate cancer prognosis is presented. Five training strategies were implemented: the Successive Approximation algorithm; the k-means algorithm; Ainet; Ainet + k-means, and Successive Approximation + k-means. Comparing all tested strategies, the Successive Approximation training strategy obtained the best fitness measure. And...
During the last six years, the gaming industry has introduced nontraditional interfaces to play videogames. These efforts had been done before but without reaching the success these new interfaces are experiencing in the last years. These new interfaces use player movement rather than buttons or joysticks, creating increasingly immersive environments for the player. These results open up a universe...
Integration of different types of brain images in a single visualization space can aid specialists in both interactive data analysis and in communication with colleagues. This article presents an interactive visualization software, called KAB, which integrates structural magnetic resonance images (MRI), functional images (fMRI) and tractographies (DTI). It is an operational prototype which offers...
Mr. Jorge Gonzalez-Marten was born in Costa Rica in 1926. He was responsible for organizing the computer center of the Treasury Department of Costa Rica. He studied in several universities in United States and also became an expert on IBM machines. In 1955, he and Mr. Walter Oreamuno founded the MAI Company in New York. Mr. Gonzalez was in charge of the expansion of this company through United States,...
This paper presents the results of a research aimed at studying the effect of information and communications technology (ICT) on productivity, using the data of the Costa Rican innovation survey 2008. The results obtained show that the ICT variables considered contribute to explain the productivity of the companies participating in the above-mentioned survey. However, these variables have an indirect,...
This paper aims to show the design and prototyping of a multi-core platform that includes hardware resources to multi-core embedded processor virtualization. The virtualization process may configure the cores' address space and the association of cores to create independents groups of cores inside the platform. The platform was prototyped and validated through simulation of applications devoted to...
The participation of women in undergraduate program of Systems and Computing Engineering at the University of los Andes, Colombia, has been declining over the past years, and today it is only about 11%. This phenomenon has been evidenced in many universities around the world and there are several collaborative projects and networks trying to understand the causes to find mitigation actions in the...
A meshing algorithm for continuous differentiable functions that represent surfaces is presented. This algorithm exploits the gaussian and mean curvatures defined on the surface to distribute triangles over it, keeping quality criteria defined in Delaunay triangulations. A right generalized cylinder (RGC) model is used as a test case.
This research deals with the two-dimensional 0–1 knapsack problem considering items of irregular shape. In this version of the problem the items correspond to convex and non-convex polygons, while the knapsack has rectangular shape. We proposed a hybrid heuristic that combines GRASP and Simulated Annealing: begins with an initial solution and, thus, explores its neighborhood using a local search procedure...
Different methodological guidelines, lack of clarity in designing curriculum modules, as well as the diversity of definitions and conceptions presents in the competence approach are drawbacks for designers of competency-based curricula. This paper presents a system designed under an ontological approach, which aims to support the design of competency-based curricula. The system emphasizes aspects...
In this paper, Julian Dunayevich gives an account of his role in the early days of the process that eventually resulted in the first teleinformatic networks in Argentina. As part of his work at the Universidad de Buenos Aires' Facultad de Ciencias Exactas y Naturales (the UBA's College of Natural and Exact Sciences), he founded the Red Académica Nacional (National Academic Network), UBA's Centro de...
This paper studies the academic records at the Universidad Latina of Costa Rica (San Pedro) Information Technology Faculty during the 2011 and it is an extension of our first research that was focused on the first period of the same year [9]. It has been proposed the courses were grouped by two characteristics: a) competence components, and b) knowledge area. They were divided into seven different...
This article assesses the importance of the history of computing for the study of science and technology in Latin America. Makes the analysis of articles published over the decades from 1980, 1990 and 2000 in the Revista Latinoamericana de Ciencias y de las History it Technology - Quipu.
Following the increase in the different areas of knowledge of multimedia databases, image retrieval by content (CBIR) has captured attention in the last decade. In this paper we present an image retrieval system of art, developed to query and exploration of a collection of art images by QBE, considering similarity criteria: the color palette, the use of light and the technique used. These similarity...
The data clustering is a technique used to make groups of objects present similar characteristics from a database. These databases may contain different variable types (numeric, categorical, scalar, binary, etc..), but categorical variables such as become a challenge clustering because lack of natural ordering. With this lack there is a big deficiency of tools and algorithms for clustering databases...
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