Now showing items 475-494 of 847

    • The Nash Problem from a Geometric and Topological Perspective 

      Fernández de Bobadilla J.; Pe Pereira M. (2018-04-17)
      We survey the proof of the Nash conjecture for surfaces and show how geometric and topological ideas developed in previous articles by the au- thors influenced it. Later we summarize the main ideas in the higher dimen- ...
    • Nature-inspired approaches for distance metric learning in multivariate time series classification 

      Oregi I.; Del Ser J.; Perez A.; Lozano J.A. (IEEE Congress on Evolutionary Computation, 2017)
      The applicability of time series data mining in many different fields has motivated the scientific community to focus on the development of new methods towards improving the performance of the classifiers over this particular ...
    • Nature-inspired approaches for distance metric learning in multivariate time series classification 

      Oregui I.; Del Ser J.; Pérez A.; Lozano J.A. (IEEE Congress on Evolutionary Computation (CEC), 2017-07)
      The applicability of time series data mining in many different fields has motivated the scientific community to focus on the development of new methods towards improving the performance of the classifiers over this particular ...
    • Nature-inspired heuristics for the multiple-vehicle selective pickup and delivery problem under maximum profit and incentive fairness criteria 

      Del Ser J.; Torre-Bastida A.I.; Laña I.; Bilbao M. N.; Perfecto C. (IEEE Congress on Evolutionary Computation, 2017)
      This work focuses on wide-scale freight transportation logistics motivated by the sharp increase of on-line shopping stores and the upsurge of Internet as the most frequently utilized selling channel during the last decade. ...
    • Nearly-optimal scheduling of users with Markovian time-varying transmission rates 

      Cecchi F.; Jacko P. (Performance Evaluation, 2016-01-01)
      We address the problem of developing a well-performing and implementable scheduler of users with wireless connections to the central controller, which arise in areas such as mobile data networks, heterogeneous networks, ...
    • Necking in 2D incompressible polyconvex materials: theoretical framework and numerical simulations 

      Mora-Corral C.; Strugaru M. (Quarterly Journal of Mechanics and Applied Mathematics, 2017-06-15)
      We show examples of 2D incompressible isotropic homogeneous hyperelastic materials with a poly-convex stored-energy function that present necking. The construction of the stored-energy function of amaterial satisfying all ...
    • Nematic elastomers: Gamma-limits for large bodies and small particles 

      Cesana P. (SIAM Journal on Mathematical Analysis, 2011-12-31)
      We compute the large-body and the small-particle Gamma-limit of a family of energies for nematic elastomers. We work under the assumption of small deformations (linearized kinematics) and consider both compressible and ...
    • A new approach to categorize continuous variables in prediction models: Proposal and validation 

      Barrio I.; Arostegui I.; Rodríguez-Álvarez M.X.; Quintana J.M. (Statistical Methods in Medical Research, 2017-12)
      When developing prediction models for application in clinical practice, health practitioners usually categorise clinical variables that are continuous in nature. Although categorisation is not regarded as advisable from ...
    • New bounds for bilinear Calderón-Zygmund operators and applications 

      Damián W.; Hormozi M.; Li K. (Revista Matemática Iberoamericana, 2016-11-25)
      In this work we extend Lacey’s domination theorem to prove the pointwise control of bilinear Calderón–Zygmund operators with Dini–continuous kernel by sparse operators. The precise bounds are carefully tracked following ...
    • New Simplified Algorithm for the Multiple Rotating Frame Approach in Computational Fluid Dynamics 

      Remaki L.; Ramezani A.; Blanco J. M.; Garcia I. (Journal of Fluids Engineering, 2017-06-02)
      This paper deals with rotating effects simulation of steady flows in turbomachinery. To take into account the rotating nature of the flow, the frozen rotor approach is one of the widely used approaches. This technique, ...
    • New Theory of Flight 

      Hoffman J.; Jansson J.; Claes J. (Journal of Mathematical Fluid Mechanics, 2016-01-01)
      We present a new mathematical theory explaining the fluid mechanics of subsonic flight, which is fundamentally different from the existing boundary layer-circulation theory by Prandtl–Kutta–Zhukovsky formed 100 year ago. ...
    • Némethi’s division algorithm for zeta-functions of plumbed 3-manifolds 

      László T.; Szilágyi Zs. (Bulletin of the London Mathematical Society, 2018-08-27)
      A polynomial counterpart of the Seiberg-Witten invariant associated with a negative definite plumbing 3-manifold has been proposed by earlier work of the authors. It is provided by a special decomposition of the zeta-function ...
    • No Time at the End of the Tunnel 

      Sokolovski D.; Akhmatskaya E. (Communications Physics – Nature, 2018-08-21)
      Modern atto-second experiments seek to provide an insight into a long standing question: “how much time does a tunnelling particle spend in the barrier?” Traditionally, quantum theory relates this duration to the delay ...
    • Non-conforming curved finite element schemes for time-dependent elastic-acoustic coupled problems 

      Rodríguez-Rozas A.; Diaz J. (Journal of Computational Physics, 2016-01-01)
      High-order numerical methods for solving time-dependent acoustic-elastic coupled problems are introduced. These methods, based on Finite Element techniques, allow for a flexible coupling between the fluid and the solid ...
    • Non-Markovian models of the growth of a polymer chain 

      Sokolovski D.; Rusconi S.; Akhmatskaya E.; Asua J.M. (Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015-12-31)
      Using simple exactly solvable models, we show that event-dependent time delays may lead to significant non-Poisson effects in the statistics of polymer chain growth. The results are confirmed by stochastic simulation of ...
    • Non-normal affine monoids, modules and Poincaré series of plumbed 3-manifolds 

      László T.; Szilágyi Zs. (Acta Mathematica Hungarica, 2017-05-18)
      We construct a non-normal affine monoid together with its modules associated with a negative definite plumbed 3-manifold M. In terms of their structure, we describe the $H_1(M,\mathbb{Z})$-equivariant parts of the topological ...
    • Non-reflecting boundary condition on ellipsoidal boundary 

      Barucq H.; Dupouy St-Guirons A.-G.D.; Tordeux S. (Numerical Analysis and Applications, 2012-12-31)
      The modeling of wave propagation problems using finite element methods usually requires the truncation of the computation domain around the scatterer of interest. Absorbing boundary conditions are classically considered ...
    • Nonlinear computations of heave motions for a generic Wave Energy Converter 

      Janson C.-E.; Shiri A.; Jansson J.; Moragues Ginard M.; Castanon D.; Saavedra L.; Degirmenci C.; Leoni M. (In Vittorio Bucci Alberto Marinò (Eds.), Technology and Science for the Ships of the Future, Proceedings of NAV 2018: 19th International Conference on Ship and Maritime Research, IOS Press BV, 2018)
      A bench-marking activity of numerical methods for analysis of Wave Energy Converters (WEC) was proposed under the Ocean Energy Systems (OES) International Energy Agency (IEA) Task 10 in 2015. The purpose of the benchmark ...
    • Nonlinear dynamics of shape memory alloy oscillators in tuning structural vibration frequencies 

      Wang L.; Melnik R. (Mechatronics, 2012-12-31)
      Shape memory alloy (SMA) is one of the novel advanced functional materials that has an increasing range of current and potential applications, including smart materials and structures, bio-medical and nanotechnologies. ...
    • Nonlinear weakly curved rod by Γ-Convergence 

      Velčíc I. (Journal of Elasticity, 2012-12-31)
      We present a nonlinear model of weakly curved rod, namely the type of curved rod where the curvature is of the order of the diameter of the cross-section. We use an approach analogous to the one for rods and curved rods ...