Now showing items 177-196 of 847

    • D-Wave pairing driven by bipolaric modes related to giant electron-phonon anomalies in high-Tc superconductors 

      Bru J.-B.; de Pasquale A.D.; de Siqueira Pedra W. (Journal of Statistical Mechanics: Theory and Experiment, 2015-12-31)
      Taking into account microscopic properties of most usual high-Tc superconductors, like cuprates, we define a class of microscopic model Hamiltonians for two fermions (electrons or holes) and one boson (bipolaron) on the ...
    • Darrieus-Landau instabilities in the framework of the G-equation 

      Pagnini G.; Trucchia A. (Digital proceedings of the 8th European Combustion Meeting, 18-21 April 2017, Dubrovnik, Croatia, 2017-04)
      We consider a model formulation of the flame front propagation in turbulent premixed combustion based on stochastic fluctuations imposed to the mean flame position. In particular, the mean flame motion is described by ...
    • Decentralized proportional load balancing 

      Anselmi J.; Walton N.S. (SIAM Journal on Applied Mathematics, 2016-01-01)
      Load balancing is a powerful technique commonly used in communication and computer networks to improve system performance, robustness and fairness. In this paper, we consider a general model capturing the performance of ...
    • Defects in Nematic Shells: a Gamma-convergence discrete-to-continuum approach 

      Canevari G.; Segatti A. (Archive for Rational Mechanics and Analysis, 2018-07)
      In this paper we rigorously investigate the emergence of defects on Nematic Shells with a genus different from one. This phenomenon is related to a non-trivial interplay between the topology of the shell and the alignment ...
    • Derivation of a homogenized nonlinear plate theory from 3d elasticity 

      Hornung P.; Neukamm S.; Velcic I. (Calculus of Variations and Partial Differential Equations, 2014-12-31)
      We derive, via simultaneous homogenization and dimension reduction, the (Formula presented.)-limit for thin elastic plates whose energy density oscillates on a scale that is either comparable to, or much smaller than, the ...
    • Derivation of a homogenized von-Kármán plate theory from 3D nonlinear elasticity 

      Neukamm S.; Velčić I. (Mathematical Models and Methods in Applied Sciences, 2013-12-31)
      We rigorously derive a homogenized von-Kármán plate theory as a Γ-limit from nonlinear three-dimensional elasticity by combining homogenization and dimension reduction. Our starting point is an energy functional that ...
    • Derivation of a homogenized von-Kármán shell theory from 3D elasticity 

      Hornung P.; Velcic I. (Annales de l'Institut Henri Poincare. Annales: Analyse Non Lineaire/Nonlinear Analysis, 2014-12-31)
      We derive homogenized von Kármán shell theories starting from three dimensional nonlinear elasticity. The original three dimensional model contains two small parameters: the period of oscillation $\epsilon$ of the material ...
    • Derivation of limit equation for a singular perturbation of a 3D periodic Boussinesq system 

      Scrobogna S. (Discrete and Continuous Dynamical Systems - Series A, 2017-07-15)
      We consider a system describing the dynamics of an hydrodynamical, density-dependent flow under the effects of gravitational forces. We prove that if the Froude number is sufficiently small such system is globally well ...
    • Detection of non-technical losses in smart meter data based on load curve profiling and time series analysis 

      Villar-Rodriguez E.; Del Ser J.; Oregi I.; Bilbao M. N.; Gil-Lopez S. (Energy, 2017-06)
      The advent and progressive deployment of the so-called Smart Grid has unleashed a profitable portfolio of new possibilities for an efficient management of the low-voltage distribution network supported by the introduction ...
    • Detection of Sand Dunes on Mars Using a Regular Vine-based Classification Approach 

      Carrera D.; Bandeira L.; Santana R.; Lozano J.A. (Knowledge- Based Systems, 2018-08)
      This paper deals with the problem of detecting sand dunes from remotely sensed images of the surface of Mars. We build on previous approaches that propose methods to extract informative features for the classification of ...
    • Diagonalizing quadratic bosonic operators by non-autonomous flow equations volker bach 

      Bach V.; Bru J.-B. (Memoirs of the American Mathematical Society, 2016-01-01)
      We study a non-autonomous, non-linear evolution equation on the space of operators on a complex Hilbert space. We specify assumptions that ensure the global existence of its solutions and allow us to derive its asymptotics ...
    • Dicentric dose estimates for patients undergoing radiotherapy in the RTGene study to assess blood dosimetric models and the new Bayesian method for gradient exposure 

      Moquet J.; Higueras M.; Donovan E.; Boyle S.; Barnard S.; Bricknell C.; Sun M.; Gothard L.; O'Brian G.; Cruz-Garcia L.; Badie C.; Ainsbury E.; Somaiah N. (2018-06-01)
      The RTGene study was focused on the development and validation of new transcriptional biomarkers for prediction of individual radiotherapy (RT) patient responses to ionising radiation (IR). In parallel, for validation ...
    • Dimension reduction for the micromagnetic energy functional on curved thin films 

      Di Fratta G. (2016-12-14)
      Micromagnetic con gurations of the vortex and onion type have beenwidely studied in the context of planar structures. Recently a signi cant interest to micromagnetic curved thin lms has appeared. In particular, thin ...
    • Dimensionally adaptive hp-finite element simulation and inversion of 2D magnetotelluric measurements 

      Alvarez-Aramberri J.; Pardo D. (Journal of Computational Science, 2016-09-01)
      Magnetotelluric (MT) problems often contain different subdomains where the conductivity of the media depends upon one, two, or three spatial variables. Traditionally, when a MT problem incorporates a three-dimensional (3D) ...
    • A direct algorithm in some free boundary problems 

      Murea M.; Tiba D. (Journal of Numerical Mathematics, 2016-06-28)
      In this paper we propose a new algorithm for the well known elliptic obstacle problem and for parabolic variational inequalities like one and two phase Stefan problem and of obstacle type. Our approach enters the category ...
    • Direct FEM large scale computation of turbulent multiphase flow in urban water systems and marine energy 

      Krishnasamy E.; Hoffman J.; Jansson J. (Proceesings of ECCOMAS Congress 2016 VII European Congress on Computational Methods in Applied Sciences and Engineering, 2016-11-30)
      High-Reynolds number turbulent incompressible multiphase flow represents a large class of engineering problems of key relevance to society. Here we describe our work on modeling two such problems: 1. The Consorcio de Aguas ...
    • Direct finite element simulation of turbulent flow for marine based renewable energy 

      Jansson J.; Nguyen V.D.; Moragues M.; Castanon D.; Saavedra L.; Krishnasamy E.; Goude A.; Hoffman J. (Companion paper to F. Wendt, et. al. International energy agency ocean energy systems task 10 wave energy converter modeling verification and validation. In 12th European Wave and Tidal Energy Conference, 2017., 2017)
      In this article we present a computational framework for simulation of turbulent flow in marine based renewable energy applications. In particular, we focus on floating structures and rotating turbines. This work is an ...
    • Direct solvers performance on h-adapted grids 

      Paszynski M.; Pardo D.; Calo V.M. (Computers and Mathematics with Applications, 2015-12-31)
      We analyse the performance of direct solvers when applied to a system of linear equations arising from an $h$-adapted, $C^0$ finite element space. Theoretical estimates are derived for typical $h$-refinement patterns arising ...
    • Discontinuous high-order finite-volume/finite-element method for inviscid compressible flows 

      Ramezani A.; Stipcich G.; Remaki L. (53rd AIAA Aerospace Sciences Meeting (2015), 2015-12-31)
      The discontinuous, hybrid control-volume/finite-element method merges the desirable conservative properties and intuitive physical formulation of the finite-volume technique, with the capability of local arbitrary high-order ...
    • Discrete maximum principles for nonlinear parabolic PDE systems 

      Faragó I.; Karátson J.; Korotov S. (IMA Journal of Numerical Analysis, 2012-12-31)
      Discrete maximum principles (DMPs) are established for finite element approximations of systems of nonlinear parabolic partial differential equations with mixed boundary and interface conditions. The results are based on ...