Now showing items 173-192 of 203

    • Second order evolution equations with nonlocal conditions 

      Benchohra, Mouffak; Nieto Roig, Juan José; Rezoug, Noreddine (De Gruyter, 2017)
      In this paper, we shall establish su cient conditions for the existence of solutions for second order semilinear functional evolutions equation with nonlocal conditions in Fréchet spaces. Our approach is based on the ...
    • Semiparametric prediction models for variables related with energy production 

      González Manteiga, Wenceslao; Febrero Bande, Manuel; Piñeiro Lamas, María (SpringerOpen, 2018)
      In this paper a review of semiparametric models developed throughout the years thanks to an extensive collaboration between the Department of Statistics and Operations Research of the University of Santiago de Compostela ...
    • Simulation and Optimization Models of Steady-state Gas Transmission Networks 

      Bermúdez de Castro López-Varela, Alfredo; González Díaz, Julio; González Diéguez, Francisco Javier; González Rueda, Ángel Manuel; Pérez Fernández de Cordoba, María (Elsevier, 2015)
      Managing a gas transport network is a complex problem because of the number of possibilities of routing the gas through the pipes. The most important aim in this kind of systems is to fulfill the demand within the pressure ...
    • Sistemas de control suplementario da contaminación atmosférica 

      Bermúdez Cela, José Luis; Fernández de Castro, Belén María; Souto González, José Antonio (Universidade de Santiago de Compostela, 2002)
      Os sistemas de control suplementario da contaminación atmosférica, baseados en efectuar cambios nas condicións de operación para reduci-las emisións atmosféricas en condicións meteorolóxicas adversas, permiten evita-la ...
    • Skim yoghurt with microbial transglutaminase: evaluation of consumer acceptance 

      García Gómez, Belén; Romero Rodríguez, María Ángeles; Vázquez Odériz, María Lourdes; Muñoz Ferreiro, María de las Nieves; Vázquez Vázquez, Manuel (Taylor & Francis, 2019)
      The decrease in the fat content of yoghurt causes sensory modifications. Microbial transglutaminase (TG) has been proposed as an alternative for reducing the problems caused by the fat reduction. This work deals with the ...
    • Soil organic carbon in peninsular Spain: Influence of environmental factors and spatial distribution 

      Calvo de Anta, Rosa María; Luis Calvo, Elías; Febrero Bande, Manuel; Galiñanes Costa, Juan Manuel; Macías Vázquez, Felipe; Ortíz, Roque; Casás Sabarís, Francisco (Elsevier, 2020)
      Soil organic carbon (SOC) stocks and their geographical distribution in peninsular Spain were estimated from a georeferenced database consisting of 12,724 surface samples (0–30 cm) and 3607 subsurface samples (30–50 cm), ...
    • Solutions and Green’s function of the first order linear equation with reflection and initial conditions 

      Cabada Fernández, Alberto; Fernández Tojo, Fernando Adrián (Springer International Publishing, 2014)
      This work is devoted to the study of the existence and sign of Green’s functions for first order linear problems with constant coefficients and initial (one point) conditions. We first prove a result on the existence ...
    • Some Results for Integral Inclusions of Volterra Type in Banach Spaces 

      Agarwal, Ravi P.; Benchohra, Mouffak; Nieto Roig, Juan José; Ouahab, Abdelghani (SpringerOpen, 2010)
      We first present several existence results and compactness of solutions set for the following Volterra type integral inclusions of the form: yt ∈ t 0 at − s Ays Fs, ys ds, a.e. t ∈ J, where J 0, b , A is the ...
    • Sparse matrix classification on imbalanced datasets using convolutional neural networks 

      Pichel Campos, Juan Carlos; Pateiro López, Beatriz (IEEE, 2019)
      This paper deals with the class imbalance problem in the context of the automatic selection of the best storage format for a sparse matrix with the aim of maximizing the performance of the sparse matrix vector multiplication ...
    • A Spatially Adaptive Edge-Preserving Denoising Method Based on Fractional-Order Variational PDEs 

      Wang, Dehua; Nieto Roig, Juan José; Li, Xiaoping; Li, Yiming (IEEE, 2020)
      Image denoising is a basic problem in image processing. An important task of image denoising is to preserve the significant geometric features such as edges and textures while filtering out noise. So far, this is still a ...
    • Spatio-Temporal Dynamic of Malaria Incidence: A Comparison of Two Ecological Zones in Mali 

      Ateba, François Freddy; Sagara, Issaka; Sogoba, Nafomon; Touré, Mahamoudou; Konaté, Drissa; Diawara, Sory Ibrahim; Diakité, Séidina Aboubacar Samba; Diarra, Ayouba; Coulibaly, Mamadou D.; Dolo, Mathias; Dolo, Amagana; Sacko, Aissata; Thiam, Sidibe M’baye; Sissako, Aliou; Sangaré, Lansana; Diakité, Mahamadou; Koita, Ousmane A.; Cissoko, Mady; Traore, Sékou Fantamady; Winch, Peter J.; Febrero Bande, Manuel; Shaffer, Jeffrey G.; Krogtad, Donald J.; Marker, Hannah Catherine; Doumbia, Seydou; Gaudart, Jean (MDPI, 2020)
      Malaria transmission largely depends on environmental, climatic, and hydrological conditions. In Mali, malaria epidemiological patterns are nested within three ecological zones. This study aimed at assessing the relationship ...
    • Stability of periodic solutions of first-order difference equations lying between lower and upper solutions 

      Cabada Fernández, Alberto; Otero Espinar, María Victoria; Rodríguez Vivero, Dolores (SpringerOpen, 2005)
      We prove that if there exists α ≤ β, a pair of lower and upper solutions of the first-order discrete periodic problem Δu(n) = f (n,u(n)); n ∈ IN ≡ {0, . . . ,N −1}, u(0) = u(N), with f a continuous N-periodic function ...
    • Statistical Computing in Functional Data Analysis: The R Package fda.usc 

      Febrero Bande, Manuel; Oviedo de la Fuente, Manuel (Foundation for Open Access Statistics, 2012)
      This paper is devoted to the R package fda.usc which includes some utilities for functional data analysis. This package carries out exploratory and descriptive analysis of functional data analyzing its most important ...
    • Statistics in biomedical research 

      Cadarso Suárez, Carmen María; González Manteiga, Wenceslao (Consejo Superior de Investigaciones Científicas (CSIC), 2007)
      La Bioestadística es hoy en día una componente científica fundamental de la investigación en Biomedicina, salud pública y servicios de salud. Las áreas tradicionales y emergentes de aplicación incluyen ensayos clínicos, ...
    • Stieltjes differential systems with nonmonotonic derivators 

      Frigon, Marlène; Fernández Tojo, Fernando Adrián (Springer, 2020)
      In this work we study Stieltjes differential systems of which the derivators are allowed to change sign. This leads to the definition of the notion of a function of controlled variation, a characterization of precompact ...
    • Study of solutions to some functional differential equations with piecewise constant arguments 

      Nieto Roig, Juan José; Rodríguez López, Rosana (Hindawi, 2012)
      We provide optimal conditions for the existence and uniqueness of solutions to a nonlocal boundary value problem for a class of linear homogeneous second-order functional differential equations with piecewise constant ...
    • Surname regions and dialectal variation in the Asturian linguistic space 

      Sousa Fernández, Xulio; Ginzo Villamayor, María José (Cambridge University Press, 2020)
      Studies on the correlations between spatial distribution of linguistic varieties and genetic structure of populations began by dealing with geographic spaces and extensive linguistic families. In the last two decades, ...
    • Terminal value problem for differential equations with Hilfer–Katugampola fractional derivative 

      Benchohra, Mouffak; Bouriah, Soufyane; Nieto Roig, Juan José (MDPI, 2019)
      We present in this work the existence results and uniqueness of solutions for a class of boundary value problems of terminal type for fractional differential equations with the Hilfer–Katugampola fractional derivative. ...
    • Testing for signif cant differences between two spatial patterns using covariates 

      Borrajo García, María Isabel; González Manteiga, Wenceslao; Martínez Miranda, María Dolores (Elsevier, 2019)
      This paper addresses the problem of comparing the spatial distribution of two point patterns. A formal statistical test is proposed to decide whether two observed patterns share the same theoretical intensity model. ...
    • Testing for the equality of k regression curves 

      Pardo Fernández, Juan Carlos; Keilegom, Ingrid van; González Manteiga, Wenceslao (Academia Sinica, Institute of Statistical Science, 2007)
      Assume that (Xj , Yj ) are independent random vectors satisfying the nonparametric regression models Yj = mj (Xj ) + σj (Xj )εj , for j = 1, . . . , k, where mj (Xj ) = E(Yj |Xj ) and σ 2 j (Xj ) = Var (Yj |Xj ) are ...





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