Now showing items 1-20 of 192

    • Ciclo de vida organizacional. Unha revisión teórica 

      Hurtado Torres, Nuria Esther; Maraver Tarifa, Guillermo; Senise Barrio, María Eugenia (Universidade de Santiago de Compostela. Servizo de Publicacións e Intercambio Científico, 1996)
    • Dimensionalidade da capacidade económica nas comarcas galegas 

      Iglesias Patiño, Carlos Luis; López Vizcaíno, María Esther; Sánchez Fernández, Patricio (Universidade de Santiago de Compostela, 2000)
      Neste artigo o obxectivo xeral que se establece é realizar unha análise exploratoria dun conxunto suficientemente amplo de variables que, nun primeiro momento, están relacionadas coa capacidade económica a nivel comarcal. ...
    • 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 ...
    • Benestar socioeconómico dos concellos galegos: unha aproximación á súa medida 

      López Vizcaíno, María Esther; Sánchez Fernández, Patricio; Iglesias Patiño, Carlos Luis (Universidade de Santiago de Compostela, 2003)
      O obxectivo final deste traballo é chegar a unha comparación territorial entre os concellos galegos no referente ó nivel ou calidade de vida ou, cando menos, á súa aproximación. Para este propósito empregarase o método ...
    • Existence and uniqueness of solutions of higher-order antiperiodic dynamic equations 

      Cabada Fernández, Alberto; Rodríguez Vivero, Dolores (SpringerOpen, 2004)
      We prove existence and uniqueness results in the presence of coupled lower and upper solutions for the general nth problem in time scales with linear dependence on the ith Δ- derivatives for i = 1, 2, . . . ,n, together ...
    • 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 ...
    • Existence of extremal solutions for quadratic fuzzy equations 

      Nieto Roig, Juan José; Rodríguez López, Rosana (Hindawi, 2005)
      Some results on the existence of solution for certain fuzzy equations are revised and extended. In this paper, we establish the existence of a solution for the fuzzy equation , where , , , and are positive fuzzy numbers ...
    • Basic properties of Sobolev's spaces on time scales 

      Agarwal, Ravi P.; Otero Espinar, María Victoria; Perera, Kanishka; Rodríguez Vivero, Dolores (SpringerOpen, 2006)
      We study the theory of Sobolev's spaces of functions defined on a closed subinterval of an arbitrary time scale endowed with the Lebesgue Δ-measure; analogous properties to that valid for Sobolev's spaces of functions ...
    • Existence results for φ-Laplacian boundary value problems on time scales 

      Cabada Fernández, Alberto (SpringerOpen, 2006)
      This paper is devoted to proving the existence of the extremal solutions of a φ-Laplacian dynamic equation coupled with nonlinear boundary functional conditions that include as a particular case the Dirichlet and multipoint ...
    • Analysis of an SIR Epidemic Model with Pulse Vaccination and Distributed Time Delay 

      Gao, Shujing; Teng, Zhi-Dong; Nieto Roig, Juan José; Torres Iglesias, Ángela Juana (Hindawi, 2007)
      Pulse vaccination, the repeated application of vaccine over a defined age range, is gaining prominence as an effective strategy for the elimination of infectious diseases. An SIR epidemic model with pulse vaccination and ...
    • The Monotone Iterative Technique for Three-Point Second-Order Integrodifferential Boundary Value Problems with p-Laplacian 

      Ahmad, Bashir; Nieto Roig, Juan José (Springer, 2007)
      A monotone iterative technique is applied to prove the existence of the extremal positive pseudosymmetric solutions for a three-point second-order p-Laplacian integrodifferential boundary value problem.
    • Permanence and Periodic Solution of Predator-Prey System with Holling Type Functional Response and Impulses 

      Wang, Weibing; Shen, Jianhua; Nieto Roig, Juan José (Hindawi, 2007)
      We considered a nonautonomous two dimensional predator-prey system with impulsive effect. Conditions for the permanence of the system and for the existence of a unique stable periodic solution are obtained.
    • A nonparametric approach to the estimation of lengths and surface areas 

      Cuevas González, Antonio; Fraiman, Ricardo; Rodríguez Casal, Alberto (Institute of Mathematical Statistics, 2007)
      The Minkowski content L0(G) of a body G⊂ℝd represents the boundary length (for d=2) or the surface area (for d=3) of G. A method for estimating L0(G) is proposed. It relies on a nonparametric estimator based on the information ...
    • 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 ...
    • 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, ...
    • A cota de erro na medida das audiencias 

      Mira Pérez, Jorge; Sánchez Sellero, César Andrés (Academia Galega do Audiovisual, 2008)
    • Multiple positive solutions in the sense of distributions of singular BVPs on time scales and an application to Emden-Fowler equations 

      Agarwal, Ravi P.; Otero Espinar, María Victoria; Perera, Kanishka; Rodríguez Vivero, Dolores (Springer Nature, 2008)
      This paper is devoted to using perturbation and variational techniques to derive some sufficient conditions for the existence of multiple positive solutions in the sense of distributions to a singular second-order dynamic ...
    • 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 ...
    • First-Order Singular and Discontinuous Differential Equations 

      Biles, Daniel C.; López Pouso, Rodrigo (SpringerOpen, 2009)
      We use subfunctions and superfunctions to derive sufficient conditions for the existence of extremal solutions to initial value problems for ordinary differential equations with discontinuous and singular nonlinearities.
    • Existence Results for Nonlinear Boundary Value Problems of Fractional Integrodifferential Equations with Integral Boundary Conditions 

      Ahmad, Bashir; Nieto Roig, Juan José (SpringerOpen, 2009)
      This paper deals with some existence results for a boundary value problem involving a nonlinear integrodifferential equation of fractional order with integral boundary conditions. Our results are based on contraction ...





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