Πλοήγηση Τμήμα Μαθηματικών και Στατιστικής / Department of Mathematics and Statistics ανά Τίτλο

Αποτελέσματα 680-699 από 1633

    • Article  

      Local block bootstrap inference for trending time seriesAAA 

      Dowla, A.; Paparoditis Efstathios, E.; Politis, Dimitris Nicolas (2013)
      Resampling for stationary sequences has been well studied in the last couple of decades. In the paper at hand, we focus on nonstationary time series data where the nonstationarity is due to a slowly-changing deterministic ...
    • Article  

      Local block bootstrapAAA 

      Paparoditis Efstathios, E.; Politis, Dimitris Nicolas (2002)
      For time series that are not stationary, the block bootstrap method is not directly applicable. However, if the underlying stochastic structure is slowly changing with time, one may employ a local block-resampling procedure. ...
    • Article  

      The local bootstrap for kernel estimators under general dependence conditions 

      Paparoditis Efstathios, E.; Politis, Dimitris Nicolas (2000)
      We consider the problem of estimating the distribution of a nonparametric (kernel) estimator of the conditional expectation g(Greek cursive chi
    • Article  

      The local bootstrap for kernel estimators under general dependence conditionsAAA 

      Paparoditis Efstathios, E.; Politis, Dimitris Nicolas (2000)
      We consider the problem of estimating the distribution of a nonparametric (kernel) estimator of the conditional expectation g(Greek cursive chi
    • Article  

      The local bootstrap for Markov processes 

      Paparoditis Efstathios, E.; Politis, Dimitris Nicolas (2002)
      A nonparametric bootstrap procedure is proposed for stochastic processes which follow a general autoregressive structure. The procedure generates bootstrap replicates by locally resampling the original set of observations ...
    • Article  

      The local bootstrap for Markov processesAAA 

      Paparoditis Efstathios, E.; Politis, Dimitris Nicolas (2002)
      A nonparametric bootstrap procedure is proposed for stochastic processes which follow a general autoregressive structure. The procedure generates bootstrap replicates by locally resampling the original set of observations ...
    • Article  

      The local bootstrap for periodogram statistics 

      Paparoditis Efstathios, E.; Politis, Dimitris Nicolas (1999)
      A bootstrap procedure for the periodogram of a weakly dependent stationary sequence is proposed. The method works by locally resampling the periodogram ordinates and does not require estimation of the spectral density and ...
    • Article  

      The local bootstrap for periodogram statisticsAAA 

      Paparoditis Efstathios, E.; Politis, Dimitris Nicolas (1999)
      A bootstrap procedure for the periodogram of a weakly dependent stationary sequence is proposed. The method works by locally resampling the periodogram ordinates and does not require estimation of the spectral density and ...
    • Article  

      Local RBF Algorithms for Elliptic Boundary Value Problems in Annular Domains 

      Chen, C. S.; Karageorghis, Andreas (2019)
      A local radial basis function method (LRBF) is applied for the solution of boundary value problems in annular domains governed by the Poisson equation, the inhomogeneous biharmonic equation and the inhomogeneous Cauchy-Navier ...
    • Article  

      Locally Explicit Fundamental Principle for Homogeneous Convolution Equations 

      Vidras, Alekos (2019)
      In the present paper a locally explicit version of Ehrenpreis's Fundamental Principle for a system of homogeneous convolution equations f · µj = 0, j = 1, ..., m, f ∈ E(Rn), µj ∈ E' (Rn), is derived, when the Fourier ...
    • Book Chapter  

      Locally Stationary Processes and the Local Block Bootstrap 

      Dowla, A.; Paparoditis Efstathios, E.; Politis, Dimitris Nicolas (Elsevier Inc., 2003)
      This chapter describes locally stationary processes and the local block bootstrap. For time series that are not stationary, the block bootstrap is not directly applicable. It is found that because of the nonstationarity, ...
    • Article  

      Log-linear Poisson autoregression 

      Fokianos, Konstantinos; Tjøstheim, D. (2011)
      We consider a log-linear model for time series of counts. This type of model provides a framework where both negative and positive association can be taken into account. In addition time dependent covariates are accommodated ...
    • Article  

      Longitudinal control of heavy trucks in mixed traffic: Environmental and fuel economy considerations 

      Zhang, J.; Ioannou, Petros A. (2006)
      In this paper, longitudinal vehicle-following controllers for heavy trucks with different spacing policies are designed, analyzed, simulated, and experimentally tested, and their performance in mixed traffic with passenger ...
    • Conference Object  

      Longitudinal control of heavy trucks: Environmental and fuel economy considerations 

      Zhang, J.; Ioannou, Petros A. (2004)
      In this paper we design, analyze, simulate and experimentally test longitudinal vehicle following controllers for heavy trucks with different spacing policies and evaluate their performance in mixed traffic with passenger ...
    • Conference Object  

      Longitudinal motion control of air-breathing hypersonic vehicles based on time-varying models 

      Fidan, B.; Kuipers, M.; Ioannou, Petros A.; Mirmirani, M. (2006)
      The non-standard dynamic characteristics of air-breathing hypersonic flight vehicles together with the aerodynamic effects of hypersonic flight make the flight control of such systems highly challenging. Moreover the wide ...
    • Article  

      Looking for the integrating factor: The darboux approach 

      Christodoulides, Y. T.; Damianou, Pantelis A. (2014)
      We present a method for the solution of first-order ordinary differential equations based on a class of polynomials known as Darboux polynomials. Integrating factors, used to convert the equations in exact form, and constants ...
    • Article  

      Lotka-Volterra equations in three dimensions satisfying the Kowalevski-Painlevé property 

      Constandinides, Kyriacos; Damianou, Pantelis A. (2011)
      We examine a class of Lotka-Volterra equations in three dimensions which satisfy the Kowalevski-Painlevé property. We restrict our attention to Lotka-Volterra systems defined by a skew symmetric matrix. We obtain a complete ...
    • Article  

      Lubrication solution of the axisymmetric Poiseuille flow of a Bingham fluid with pressure-dependent rheological parameters 

      Housiadas, Kostas D.; Ioannou, Iasonas; Georgiou, Georgios C. (2018)
      The lubrication flow of a Bingham plastic in long tubes is modeled using the approach proposed by Fusi and Farina (Appl. Math. Comp. 320, 1–15 (2018)). Both the plastic viscosity and the yield stress are assumed to vary ...
    • Article  

      Lubrication solution of the flow of a Herschel-Bulkley fluid with pressure-dependent rheological parameters in an asymmetric channel 

      Panaseti, Pandelitsa; Georgiou, Georgios C.; Ioannou, Iasonas (2019)
      The lubrication flow of a Herschel-Bulkley fluid in a long asymmetric channel, the walls of which are described by two arbitrary functions h1(x) and h2(x) such that h1(x) < h2(x) and h1(x) + h2(x) are linear, is solved ...
    • Article  

      L”-Convergence of a Certain Class of Product Martingales 

      Koumandos, S. (1994)
      We establish the Kakutani dichotomy property for two generalized Rademacher-Riesz product measures p, v