Now showing items 110-129 of 236

    • idmTPreg: Regression Model for Progressive Illness Death Data 

      Azarang, Leyla; Oviedo de la Fuente, Manuel (The R Foundation, 2018)
      This paper describes the implementation of a flexible method in R for fitting a regression model to possibly non-Markov progressive illness-death data. The idmTPreg package offers the user the opportunity to estimate ...
    • Implicit Fractional Differential Equations via the Liouville–Caputo Derivative 

      Nieto Roig, Juan José; Ouahab, Abdelghani; Venktesh, Venktesh (MDPI, 2015)
      We study an initial value problem for an implicit fractional differential equation with the Liouville–Caputo fractional derivative. By using fixed point theory and an approximation method, we obtain some existence and ...
    • Influence of socioeconomic status on community-acquired pneumonia outcomes in elderly patients requiring hospitalization: a multicenter observational study 

      Izquierdo, Conchita; Oviedo de la Fuente, Manuel; Ruiz, Laura; Sintes, Xavier; Vera, Isabel; Nebot, Manuel; Bayas, Jose María; Carratalà, Jordi; Varona, Wenceslao; Sousa, Dolores; Celorrio, Jose Miguel; Salleras, Luís; Domínguez García, Ángela; Working Group for the Study of the Prevention of CAP in the Elderly (BioMed Central, 2010)
      Background The associations between socioeconomic status and community-acquired pneumonia outcomes in adults have been studied although studies did not always document a relationship. The aim of this multicenter ...
    • Influence of storage conditions on the sensory and physicochemical characteristics of Galician Kennebec potatoes (Solanum tuberosum L.) 

      Montouto Graña, Mónica; Vázquez Odériz, María Lourdes; Romero Rodríguez, María Ángeles; Muñoz Ferreiro, María de las Nieves (Taylor & Francis, 2012)
      In this study, we compared conventional storage of Kennebec potatoes in a ventilated room at ambient temperature with storage at controlled temperatures of 10, 7 and (initially) 4°C as regards the evolution of colour, ...
    • Initial Value Problem For Nonlinear Fractional Differential Equations With ψ-Caputo Derivative Via Monotone Iterative Technique 

      Derbazi, Choukri; Baitiche, Zidane; Benchohra, Mouffak; Cabada Fernández, Alberto (MDPI, 2020)
      In this article, we discuss the existence and uniqueness of extremal solutions for nonlinear initial value problems of fractional differential equations involving the ψ -Caputo derivative. Moreover, some uniqueness results ...
    • Interior Regularity Estimates for a Degenerate Elliptic Equation with Mixed Boundary Conditions 

      Djida, Jean Daniel; Fernández, Arran (MDPI, 2018)
      The Marchaud fractional derivative can be obtained as a Dirichlet-to–Neumann map via an extension problem to the upper half space. In this paper we prove interior Schauder regularity estimates for a degenerate elliptic ...
    • Is It Possible to Construct a Fractional Derivative Such That the Index Law Holds? 

      Cao Labora, Daniel; Rodríguez López, Rosana; Nieto Roig, Juan José (Natural Sciences Publishing Corp., 2018-01-01)
      The aim of this note is to make a brief consideration about the Index Law in fractional differentiation. We are not interested in any particular definition of fractional derivative, and that is why we will not introduce ...
    • La matemática, la ciencia que ayuda a combatir incendios 

      Ginzo Villamayor, María José (Colexio Oficial de Enxeñeiros Técnicos Industriais de A Coruña (Coeticor), 2018)
      El proyecto LUMES y el ENJAMBRE contribuirán a desarrollar tecnologías para optimizar los esfuerzos dedicados a la extinción de fuegos y permitirán reducir la superficie afectada, así como aumentar la seguridad de las ...
    • Las elecciones generales de 2008 y el juego del parlamento 

      Alonso Meijide, José María; Álvarez Mozos, Mikel (Federación Española de Profesores de Matemáticas, 2010)
      En este artículo analizamos el resultado de las elecciones generales desde un punto de vista Teórico de Juegos. Para cuantificar el poder que cada partido tiene en el nuevo Parlamento introducimos tres conceptos, los ...
    • A Liouville’s Formula for Systems with Reflection 

      Codesido, Santiago; Fernández Tojo, Fernando Adrián (MDPI, 2021)
      In this work, we derived an Abel–Jacobi–Liouville identity for the case of two-dimensional linear systems of ODEs (ordinary differential equations) with reflection. We also present a conjecture for the general case and an ...
    • A Lipschitz condition along a transversal foliation implies local uniqueness for ODEs 

      Cid, José Ángel; Fernández Tojo, Fernando Adrián (University of Szeged, 2018)
      We prove the following result: if a continuous vector field F is Lipschitz when restricted to the hypersurfaces determined by a suitable foliation and a transversal condition is satisfied at the initial condition, then F ...
    • Lower and upper solutions for even order boundary value problems 

      Cabada Fernández, Alberto; López Somoza, Lucía (MPDI, 2019)
      In this paper, we prove the existence of solutions of nonlinear boundary value problems of arbitrary even order using the lower and upper solutions method. In particular, we point out the fact that the existence of a ...
    • Lyapunov-type inequalities for a higher order fractional differential equation with fractional integral boundary conditions 

      Jleli, Mohamed; Nieto Roig, Juan José; Samet, Bessem (Bolyai Institute, University of SzegedHungarian Academy of Sciences, 2017)
      New Lyapunov-type inequalities are derived for the fractional boundary value problem Daa u(t) + q(t)u(t) = 0, a <t <b, u(a) = u0(a) = … = u(n-2)(a) = 0, u(b) = Iaa (hu)(b), where n E IN, n > 2, n - 1 < <n, Daa ...
    • Mann iteration for monotone nonexpansive mappings in ordered CAT(0) space with an application to integral equations 

      Uddin, Izhar; Garodia, Chanchal; Nieto Roig, Juan José (SpringerOpen, 2018-12-11)
      In this paper, we establish some convergence results for a monotone nonexpansive mapping in a CAT(0) space. We prove the Δ- and strong convergence of the Mann iteration scheme. Further, we provide a numerical example to ...
    • Marginality and convexity in partition function form games 

      Alonso Meijide, José María; Álvarez Mozos, Mikel; FIESTRAS-JANEIRO, MARIA GLORIA; Jiménez Losada, Andrés (Springer, 2021)
      In this paper an order on the set of embedded coalitions is studied in detail. This allows us to define new notions of superaddivity and convexity of games in partition function form which are compared to other proposals ...
    • A medición da calidade de vida nas comarcas galegas 

      López Vizcaíno, María Esther; Sánchez Fernández, Patricio (Universidade de Santiago de Compostela, 2009)
      No presente artigo abórdase unha proposta que pretende achegar unha medida da calidade de vida das comarcas galegas desde un punto de vista socioeconómico. Con este propósito emprégase a técnica da Análise Envolvente de ...
    • Minimax Estimation of the Volume of a Set Under the Rolling Ball Condition 

      Arias Castro, Ery; Pateiro López, Beatriz; Rodríguez Casal, Alberto (Taylor & Francis, 2018)
      We consider the problem of estimating the volume of a compact domain in a Euclidean space based on a uniform sample from the domain. We assume that the domain has a boundary with positive reach. We propose a data-splitting ...
    • Mode testing, critical bandwidth and excess mass 

      Ameijeiras Alonso, José; Crujeiras Casais, Rosa María; Rodríguez Casal, Alberto (Springer, 2018)
      The identification of peaks or maxima in probability densities, by mode testing or bump hunting, has become an important problem in applied fields. For real random variables, this task has been approached in the statistical ...
    • Modeling conditional reference regions: application to glycemic markers 

      Lado Baleato, Óscar; Roca Pardiñas, Javier; Cadarso Suárez, Carmen María; Gude Sampedro, Francisco (Wiley, 2021)
      Many clinical decisions are taken based on the results of continuous diagnostic tests. Usually, only the results of one single test is taken into consideration, the interpretation of which requires a reference range for ...
    • Molecular Profiling of Circulating Tumour Cells Identifies Notch1 as a Principal Regulator in Advanced Non-Small Cell Lung Cancer 

      Mariscal, Javier; Alonso Nocelo, Marta; Muinelo Romay, Laura; Barbazán García, Jorge; Vieito, María; Abalo, Alicia; Gómez Tato, Antonio; Casares de Cal, María Ángeles; García-Caballero Parada, Tomás; Rodríguez, Carmela; Brozos, Elena; Baron, Francisco; López López, Rafael; Abal Posada, Miguel (Nature Publishing Group, 2016)
      Knowledge on the molecular mechanisms underlying metastasis colonization in Non-Small Cell Lung Cancer (NSCLC) remains incomplete. A complete overview integrating driver mutations, primary tumour heterogeneity and overt ...





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