Browsing Τμήμα Μαθηματικών και Στατιστικής / Department of Mathematics and Statistics by Title
Now showing items 454-473 of 1633
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Fatigue life prediction for a vessel sailing the North Atlantic route
(2007)A method for calculating the wave load induced fatigue damage accumulated by a vessel sailing along the North Atlantic route (NAr) is presented. This method is based on the Palmgren-Miner additive rule and the rainflow ...
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FFinite element approximation of convection–diffusion problems using an exponentially graded mesh
(2016)
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Filling in missing sea-surface temperature satellite data over the Eastern Mediterranean sea using the DINEOF algorithm
(2014)The Data Interpolating Empirical Orthogonal Functions method is a special technique based on Empirical Orthogonal Functions and developed to reconstruct missing data from satellite images, which is especially useful for ...
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Financial time series
(2009)The evolution of financial markets is a complicated real-world phenomenon that ranks at the top in terms of difficulty of modeling and/or prediction. One reason for this difficulty is the well-documented nonlinearity that ...
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Financial time series and volatility prediction using NoVaS transformations
(2008)We extend earlier work on the NoVaS transformation approach introduced by Politis (2003a, 2003b). The proposed approach is model-free and especially relevant when making forecasts in the context of model uncertainty and ...
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A fine-tuned estimator of a general convergence rate
(2008)Summary A general rate estimation method based on the in-sample evolution of appropriately chosen diverging/converging statistics has recently been proposed by D.N. Politis [C. R. Acad. Sci. Paris, Ser. I, vol. 335, pp. ...
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Finite Difference Schemes for the Cauchy–Navier Equations of Elasticity with Variable Coefficients
(2015)We solve the variable coefficient Cauchy–Navier equations of elasticity in the unit square, for Dirichlet and Dirichlet-Neumann boundary conditions, using second order finite difference schemes. The resulting linear systems ...
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Finite element analysis of an exponentially graded mesh for singularly perturbed problems
(2015)We present the mathematical analysis for the convergence of an h version Finite Element Method (FEM) with piecewise polynomials of degree p ≥ 1, defined on an exponentially graded mesh. The analysis is presented for a ...
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Finite element approximation of convection–diffusion problems using an exponentially graded mesh
(2016)We present the analysis of an h version Finite Element Method for the approximation of the solution to convection–diffusion problems. The method uses piece-wise polynomials of degree p≥1, defined on an exponentially graded ...
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Finite element approximation of reaction–diffusion problems using an exponentially graded mesh
(2018)We present the analysis of an h version Finite Element Method for the approximation of the solution to singularly perturbed reaction–diffusion problems posed in smooth domains Ω⊂R2. The method uses piecewise polynomials ...
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Finite element computations for the Reissner-Mindlin plate model
(1998)We consider the finite element (FE) approximation of the Reissner - Mindlin (RM) plate model, and indicate how to design meshes that yield accurate results when the p/hp version of the standard FE method is used. These ...
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Finite element methods for a singularly perturbed transmission problem
(2009)We consider a one-dimensional singularly perturbed transmission problem with two different diffusion coefficients. The solution will contain boundary layers only in the part of the domain where the diffusion coefficient ...
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Finite-term relations for planar orthogonal polynomials
(2007)We prove by elementary means that, if the Bergman orthogonal polynomials of a bounded simply-connected planar domain, with sufficiently regular boundary, satisfy a finite-term relation, then the domain is algebraic and ...
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First order deformations of schemes with normal crossing singularities
(2011)We study the sheaf T1(X) of first order deformations of a reduced scheme with normal crossing singularities. In particular, we obtain a formula for T1(X) in a suitable log resolution of X. © 2011 Springer-Verlag.
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Fixed b subsampling and the block bootstrap: Improved confidence sets based on p-value calibration
(2013)Subsampling and block-based bootstrap methods have been used in a wide range of inference problems for time series. To accommodate the dependence, these resampling methods involve a bandwidth parameter, such as the subsampling ...
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Fixed-b asymptotics for the studentized mean from time series with short, long, or negative memory
(2012)This paper considers the problem of variance estimation for the sample mean in the context of long memory and negative memory time series dynamics, adopting the fixed-bandwidth approach now popular in the econometrics ...
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Conference Object
Flight dynamics and control of air-breathing hypersonic vehicles: Review and new directions
(2003)The current air-breathing hypersonic flight (AHF) technology programs focus on development of flight test vehicles and operational vehicle prototypes that utilize airframe-integrated scramjet engines. A key issue in making ...