Exploració per autor "Muñoz Gracia, María del Pilar"
Ara es mostren els items 1-20 de 37
-
A GEE moving average analysis of the relationship between air pollution and mortality for asthma in Barcelona, Spain
Marc, Sáez; Aurelio, Tobias; Muñoz Gracia, María del Pilar; Campbell, M J (1999-08)
Article
Accés restringit per política de l'editorialSeveral studies have assessed the association between air pollution and hospital admissions or emergency room visits for asthma. Because of both the presence of missing data and the small number of observations, the ... -
A web-based learning tool improves student performance in statistics: a randomized masked trial
González Alastrué, José Antonio; Jover, Lluís; Cobo Valeri, Erik; Muñoz Gracia, María del Pilar (2010-03)
Article
Accés obertBackground: e-status is a web-based tool able to generate different statistical exercises and to provide immediate feedback to students’ answers. Although the use of Information and Communication Technologies (ICTs) is ... -
Are the markets influenced by the frequency and the long relationships?
Márquez, M. Dolores; Muñoz Gracia, María del Pilar (2008)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper analyzes the multivariate volatility effects among the indexes returns time series of the main stock markets. We detect, applying cointegration techniques, relations of interdependence between these markets and ... -
Artificial neural networks applied to forecasting time series
Montaño Moreno, Juan José; Palmer Pol, Alfonso; Muñoz Gracia, María del Pilar (2011)
Article
Accés restringit per política de l'editorialThis study offers a description and comparison of the main models of Artificial Neural Networks (ANN) which have proved to be useful in time series forecasting, and also a standard procedure for the practical application ... -
Cobertura vacunal de gripe y evolución de la morbilidad declarada y la mortalidad por todas las causas en Cataluña
Muñoz Gracia, María del Pilar; Soldevila, Nuria; Martínez, A.; Carmona, G.; Batalla, J.; Acosta Argueta, Lesly María; Domínguez, Àngela (2010-10)
Article
Accés obert -
Comments on: space-time wind speed forecasting for improved power system dispatch
Muñoz Gracia, María del Pilar (2014-02-27)
Article
Accés restringit per política de l'editorial -
Contagion between United States and european markets during the recent crises
Muñoz Gracia, María del Pilar; Márquez Cebrián, Dolores; Sánchez Espigares, Josep Anton (2011-07)
Article
Accés obertThe main objective of this paper is to detect the existence of financial contagion between the North American and European markets during the recent crises. To accomplish this, the relationships between the US and the Euro ... -
E-status: a web tool for learning by doing exercises
González Alastrué, José Antonio; Muñoz Gracia, María del Pilar (University of Creta, 2002)
Text en actes de congrés
Accés obertThe paper introduces the project led by a team of teachers to assist students learn statistics. The goal is to build a tool able to present mathematical problems and to correct the students´ answers. The problems may include ... -
E-status: entorno web para la generación y resolución de problemas numéricos
González Alastrué, José Antonio; Muñoz Gracia, María del Pilar; Cobo Valeri, Erik; Martí Recober, Manuel (2005-02)
Text en actes de congrés
Accés obertSe presenta un sistema basado en plataformas web que pretende ayudar a los estudiantes a aprender estadística mediante la generación de problemas individualizados de tipo numérico con corrección instantánea. Como los ... -
Effectiveness of measles vaccination for control of exposed children
Barrabeig, Irene; Rovira, Ariadna; Rius, Cristina; Muñoz Gracia, María del Pilar; Soldevila, Nuria; Batalla, Joan; Domínguez, Àngela (Lippincott Williams & Wilkins, 2010-09-14)
Article
Accés restringit per política de l'editorialThe effectiveness of measles vaccine for postexposure prophylaxis at educational centers was investigated. A total of 166 children who shared the classroom with 10 confirmed cases during the infectious period of cases ... -
Efficiency in the design of clinical trials with ordinal scales
Torres, Juan Vicente; Cortés, Jordi; González, Jose Antonio; Muñoz Gracia, María del Pilar; Sánchez, Josep Anton; Secades, Julio; Cobo Valeri, Erik (2009-09)
Comunicació de congrés
Accés restringit per acord de confidencialitatThe most popular statistical methods for analyzing ordinal data are reviewed in this work. Theoretical results are compared to empirical results by means of simulations. It is shown how the efficiency of the trial can be ... -
Estadística per a enginyers informàtics
González Alastrué, José Antonio; Cobo Valeri, Erik; Martí Recober, Manuel; Muñoz Gracia, María del Pilar (Edicions UPC, 2008)
Llibre
Accés restringit als usuaris de la UB, UAB, UPC, UPF, UdG, UdL, URV, UOC, BC, UVic, UJI, URL, UICEn enginyeria informàtica, hi ha molts fenòmens que no són deterministes, és a dir, que estan subjectes a error aleatori, com ara el temps de resposta d'un ordinador en sistemes complexos. Per poder modelar aquests fenòmens ... -
Estimació del pol i de la variància del soroll d'un model AR(1) mitjançant filtratge no lineal
Muñoz Gracia, María del Pilar; Martí Recober, Manuel; Egozcue Rubí, Juan José (Universitat Politècnica de Barcelona. Centre de Càlcul, 1988)
Article
Accés obertL'estimació dels paràmetres associats a un procés ARMA es pot plantejar com un problema de filtratge no lineai. Per determinar un estimador recursiu d'aquests paràmetres es deflneix un vector d'estat ampliat que inclou les ... -
Estimació dels paràmetres de models ARMA (P,Q) mitjançant algorismes de filtratge òptim
Muñoz Gracia, María del Pilar (Universitat Politècnica de Catalunya, 1988-01-01)
Tesi
Accés obertEl objetivo del trabajo era sintetizar un filtro no lineal optimo para la estimación de parámetros de modelos arma. El interés de un filtro de este estilo reside en elhecho que permite evaluar exactamente el numero mínimo ... -
Estimate of influenza cases using generalized linear, additive and mixed models
Oviedo de La Fuente, Manuel; Domínguez García, Angela; Muñoz Gracia, María del Pilar (Landes Bioscience, 2015-01-01)
Article
Accés obertWe investigated the relationship between reported cases of influenza in Catalonia (Spain). Covariates analyzed were: population, age, data of report of influenza, and health region during 2010-2014 using data obtained from ... -
Estimation of dynamic models using kernel density
Font, X; Muñoz Gracia, María del Pilar; Martí Recober, Manuel (2002-08)
Comunicació de congrés
Accés restringit per política de l'editorialThe objective of this work is to present a simple approach to deal with a dynamic model without imposing any assumptions on the error distribution. Using a state-space representation the model does not need any optimization ... -
Estimation of the number of cases of meningococcical disease in Barcelona by means capture-recapture methodology
Muñoz Gracia, María del Pilar; Orcau Palau, Angels; Pañella, Helena (1998-08)
Comunicació de congrés
Accés obertThis study is aimed at estimating the number of cases fo meningococcical disease that appeared in Barcelona between the years 1993 and 1994. We develop long-linear models for capture-recapture methods when there are more ... -
¿Existe relación entre los mercados de bonos y acciones en la Eurozona?
Márquez Cebrian, M. Dolores; Muñoz Gracia, María del Pilar; Soriano, Pilar (2010)
Text en actes de congrés
Accés restringit per política de l'editorialEl objetivo de este trabajo es investigar, en la Eurozona, la relación existente entre los mercados de bonos y acciones, conocer y cuantificar dicha relación es de vital importancia en la gestión de riesgos. Con este ... -
Formal assessment of an innovative web-based tool designed to improve student performance in statistics
González Alastrué, José Antonio; Jover, Lluís; Cobo Valeri, Erik; Muñoz Gracia, María del Pilar (2006-07)
Text en actes de congrés
Accés obertWe have developed a web-based tool, called e-status, that is able to generate individually different statistical or mathematical problems and to correct the students´ answers. The tool is well appreciated by the students ... -
Geographical differences in whooping cough in Catalonia, Spain, from 1990 to 2010
Crespo, Inma; Soldevila, Nuria; Muñoz Gracia, María del Pilar; Godoy, Pere; Carmona, Gloria; Domínguez García, Angela (2014-03)
Article
Accés obertWhooping cough is a communicable disease whose incidence has increase d in recent years in some countries with vaccination. Since 1981, in Catalonia (Spain), cases must be reported to the Public Health Department. In 1997, ...