Sidra5: a search system with geographic signatures

Tese de mestrado em Engenharia Informática, apresentada à Universidade de Lisboa através da Faculdade de Ciências, 2007Este trabalho consistiu no desenvolvimento de um sistema de pesquisa de informação com raciocínio geográfico, servindo de base para uma nova abordagem para modelação da informação geográfica contida nos documentos, as assinaturas geográficas. Pretendeu-se determinar se a semântica geográfica presente nos documentos, capturada através das assinaturas geográficas, contribui para uma melhoria dos resultados obtidos para pesquisas de cariz geográfico. São propostas e experimentadas diversas estratégias para o cálculo da semelhança entre as assinaturas geográficas de interrogações e documentos. A partir dos resultados observados conclui-se que, em algumas circunstâncias, as assinaturas geográficas contribuem para melhorar a qualidade das pesquisas geográficas.The dissertation report presents the development of a geographic information search system which implements geographic signatures, a novel approach for the modeling of the geographic information present in documents. The goal of the project was to determine if the information with geographic semantics present in documents, captured as geographic signatures, contributes to the improvement of search results. Several strategies for computing the similarity between the geographic signatures in queries and documents are proposed and experimented. The obtained results show that, in some circunstances, geographic signatures can indeed improve the search quality of geographic queries

Analysis and comparison of competitive balance in the Spanish ACB basketball league : a preliminary study

Regardless its relevance in sports economics, competitive balance has not been studied neither in Spanish nor in European professional basketball. In this preliminary study we measured the competitive balance in the Spanish ACB League from seasons 1983/1984 to 2003/2004 using the well-known winning percentage standard deviation index. Results showed great difference between seasons and a general low competitive balance index. In addition, tournament designing did not seem to affect the competitive balance in ACB

Vida familiar y economía doméstica en Huelva ante la Carrera de Indias (siglos XVII y XVIII)

Tomo I ; págs. 67-8

Efecto del ácido ascórbico en casos nuevos de Tuberculosis pulmonar baciloscopía positiva que reciben tratamiento en primer nivel de atención: Ensayo clínico controlado

El presente estudio es un ensayo clínico aleatorizado y controlado a triple ciego, fase IV, para evaluar el efecto del ácido ascórbico en pacientes con tuberculosis pulmonar baciloscopía positiva que reciben Tratamiento Acortado Estrictamente Supervisado (TAES) en el primer nivel de atención durante Septiembre 2014 a Enero 2015. La dosis de 500 mg de ácido ascórbico por vía oral cada día adicionada al TAES categoría I, con los datos preliminares al momento se puede observar que en sujetos caso nuevo de Tuberculosis pulmonar Bk+ adscritos al TAES con categoría I en el primer nivel de atención del MINSAL produce una negativización temprana de baciloscopía a la dosis #27, así mismo se pudo evidenciar una leve mejoría clínica y nutricional en todos los sujetos tratados.Tesis para optar al título de Doctor en Medicin

Sharp Weighted Estimates for Classical Operators [post-print]

See abstract at: http://www.sciencedirect.com/science/article/pii/S000187081100313

Extrapolation from A∞ weights and applications

We generalize the Ap extrapolation theorem of Rubio de Francia to A∞ weights in the context of Muckenhoupt bases. Our result has several important features. First, it can be used to prove weak endpoint inequalities starting from strong-type inequalities, something which is impossible using the classical result. Second, it provides an alternative to the technique of good-λ inequalities for proving Lp norm inequalities relating operators. Third, it yields vector-valued inequalities without having to use the theory of Banach space valued operators. We give a number of applications to maximal functions, singular integrals, potential operators, commutators, multilinear Calder´on-Zygmund operators, and multiparameter fractional integrals. In particular, we give new proofs, which completely avoid the good-λ inequalities, of Coifman’s inequality relating singular integrals and the maximal operator, of the Fefferman-Stein inequality relating the maximal operator and the sharp maximal operator, and the Muckenhoupt-Wheeden inequality relating the fractional integral operator and the fractional maximal operator.Ministerio de Ciencia y Tecnologí