Now showing items 1-20 of 65

    • Allocation Rules for Games with Optimistic Aspirations 

      Carpente Rodríguez, María Luisa; Casas Méndez, Balbina; García Jurado, Ignacio; Nouweland, Anne van den (Hindawi, 2013)
      A game with optimistic aspirations specifies two values for each coalition of players: the first value is the worth that the players in the coalition can guarantee for themselves in the event that they coordinate their ...
    • An Equilibrium Bid Markup Strategy 

      Wang, Mingxi; Liu, Shulin; Wang, Shouyang; Coladas Uría, Luis (Convergence Information Society (CIS), 2012)
      Setting a bid markup strategy is a very difficult task. Nevertheless, it is important to construction firms or consulting engineering companies because the development of successful bidding strategies is a key factor to ...
    • An Integer Linear Programming Model to Select and Temporally Allocate Resources for Fighting Forest Fires 

      Rodríguez Veiga, Jorge; Ginzo Villamayor, María José; Casas Méndez, Balbina (MDPI, 2018-09-20)
      Optimal planning of the amount and type of resources needed for extinguishing a forest fire is a task that has been addressed in the literature, using models obtained from operational research. In this study, a general ...
    • An introduction to statistical methods for circular data 

      Crujeiras Casais, Rosa María (Sociedad de Estadística e Investigación Operativa, 2017)
      Angles, directions, events, occurrences along time... all of them can be viewed as data on a circle (circular data). The particular nature of this type of data requires specific and adapted inferential and modelling ...
    • Assignment Problems in Wildfire Suppression: Models for Optimization of Aerial Resource Logistics 

      Rodríguez Veiga, Jorge; Gómez Costa, Iván; Ginzo Villamayor, María José; Casas Méndez, Balbina; Sáiz Díaz, José Luis (Oxford University Press, 2018)
      Wildfire containment activities involve a combination of important decisions that affect the evolution of the fire and effective resource deployment. When aerial resources (in particular aircraft and helicopters) are used, ...
    • Bandwidth selection for kernel density estimation with length-biased data 

      Borrajo García, María Isabel; González Manteiga, Wenceslao; Martínez Miranda, María Dolores (Taylor & Francis, 2017)
      Length-biased data are a particular case of weighted data, which arise in many situations: biomedicine, quality control or epidemiology among others. In this paper we study the theoretical properties of kernel density ...
    • Bootstrapping kernel intensity estimation for inhomogeneous point processes with spatial covariates 

      Borrajo García, María Isabel; González Manteiga, Wenceslao; Martínez Miranda, María Dolores (Elsevier, 2019)
      The bias-variance trade-o for inhomogeneous point processes with covariates is theoretically and empirically addressed. A consistent kernel estimator for the rst-order intensity function based on covariates is constructed, ...
    • Burned area prediction with semiparametric models 

      Boubeta Martínez, Miguel; Lombardía Cortiña, María José; González Manteiga, Wenceslao; Marey Pérez, Manuel Francisco (Csiro Publishing, 2015)
      Wildfires are one of the main causes of forest destruction, especially in Galicia (north-west Spain), where the area burned by forest fires in spring and summer is quite high. This work uses two semiparametric time-series ...
    • Can environmental constraints determine random patterns of plant species co-occurrence? 

      García Baquero, Gonzalo; Crujeiras Casais, Rosa María (John Wiley & Sons Ltd., 2015-02-13)
      Plant community ecologists use the null model approach to infer assembly processes from observed patterns of species co-occurrence. In about a third of published studies, the null hypothesis of random assembly cannot be ...
    • Central limit theorems for directional and linear random variables with applications 

      García Portugués, Eduardo; Crujeiras Casais, Rosa María; González Manteiga, Wenceslao (Academia Sinica, Institute of Statistical Science, 2015)
      A central limit theorem for the integrated squared error of the directional-linear kernel density estimator is established. The result enables the construction and analysis of two testing procedures based on squared loss: ...
    • Chronicle of an early demise, surname extinction in the fifteenth and the seventeenth centuries 

      Jordà, Joan Pau; Ameijeiras Alonso, José; Pujadas Mora, Joana Maria (Taylor & Francis, 2018)
      It has been amply demonstrated that individuals' reproductive capability is the key explanatory phenomenon for understanding onomastic disappearance during the early modern period. This article analyzes the evolution and ...
    • A circular nonhomogeneous hidden Markov field for the spatial segmentation of wildfire occurrences 

      Ameijeiras Alonso, José; Lagona, Francesco; Crujeiras Casais, Rosa María (Wiley, 2019)
      Motivated by studies of wildfire seasonality, we propose a nonhomogeneous hidden Markov random field to model the spatial distribution of georeferenced fire occurrences during the year, by representing occurrence times as ...
    • Cytokine-based Predictive Models to Estimate the Probability of Chronic Periodontitis: Development of Diagnostic Nomograms 

      Tomás Carmona, Inmaculada; Arias Bujanda, Nora Adriana; Alonso Sampedro, Manuela; Casares de Cal, María Ángeles; Sánchez Sellero, César Andrés; Suárez Quintanilla, David; Balsa Castro, Carlos (Springer Nature, 2017-10-14)
      Although a distinct cytokine profile has been described in the gingival crevicular fluid (GCF) of patients with chronic periodontitis, there is no evidence of GCF cytokine-based predictive models being used to diagnose the ...
    • Determining optimum wavelengths for leaf water content estimation from reflectance: A distance correlation approach 

      Ordóñez Galán, Celestino; Oviedo de la Fuente, Manuel; Roca Pardiñas, Javier; Rodríguez Pérez, José Ramón (Elsevier, 2018)
      This paper proposes a method to estimate leaf water content from reflectance in four commercial vineyard varieties by estimating the local maxima of a distance correlation function. First, it applies four different functional ...
    • DTDA: An R Package to Analyze Randomly Truncated Data 

      Moreira, Carla; Uña Álvarez, Jacobo de; Crujeiras Casais, Rosa María (Foundation for Open Access Statistics, 2010)
      In this paper, the R package DTDA for analyzing truncated data is described. This package contains tools for performing three different but related algorithms to compute the nonparametric maximum likelihood estimator of ...
    • Empirical likelihood based testing for regression 

      Keilegom, Ingrid van; Sánchez Sellero, César Andrés; González Manteiga, Wenceslao (The Institute of Mathematical StatisticsThe Bernoulli Society, 2008)
      Consider a random vector (X, Y ) and let m(x) = E(Y |X = x). We are interested in testing H0 : m ∈ MΘ,G = {γ(·, θ, g) : θ ∈ Θ, g ∈ G} for some known function γ, some compact set Θ ⊂ IRp and some function set G of real ...
    • Enrichment of rare genetic variants in astrocyte gene enriched co-expression modules altered in postmortem brain samples of schizophrenia 

      González Peñas, Javier; Costas Costas, Javier; Ginzo Villamayor, María José; Xu, Bin (Elsevier, 2019)
      The transcriptome profiles of the cingulate gyrus region from the postmortem brain tissues of a set of well-characterized patients with schizophrenia (SCZ) and matched controls were investigated using an integrated approach ...
    • Epidemiología de la enfermedad meningocócica en Cataluña antes y después de la vacunación frente al serogrupo C 

      Martínez, Ana I.; Domínguez García, Ángela; Oviedo de la Fuente, Manuel; Minguell i Vergés, Sofía; Jansà, Josep Maria; Codina Grau, Gemma; Vázquez Moreno, Julio A. (España. Ministerio de Sanidad, Consumo y Bienestar social, 2009)
      Fundamentos: La enfermedad meningocócica continúa siendo un grave problema de salud pública en todo el mundo. En Cataluña, tras implementar el programa de vacunación, ha habido un descenso importante de los casos ...
    • Estadística no paramétrica: pasado, presente y futuro 

      González Manteiga, Wenceslao; Crujeiras Casais, Rosa María (Sociedad de Estadística e Investigación Operativa, 2006)
      La estadística no paramétrica engloba una serie de técnicas de inferencia cuya característica principal es la ausencia de un modelo paramétrico de distribución subyacente. Sin pretender revisar todos y cada uno de ...
    • Evaluación del impacto de los programas de vacunación masiva: la experiencia de la hepatitis A en Cataluña 

      Oviedo de la Fuente, Manuel; Muñoz Gracia, María del Pilar; Domínguez García, Ángela; Carmona i Parcerisa, Glòria; Batalla Clavell, Joan; Borràs, Eva; Jansà, Josep Maria (España. Ministerio de Sanidad, Consumo y Bienestar social, 2009)
      Fundamento: El programa de vacunación de la hepatitis A + B en preadolescentes se introdujo en 1998 en Cataluña. Durante los siguientes años uno de los objetivos principales ha sido cuantificar la reducción en la ...





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