2006, Vol 7, No 2: Güncel gönderi

  • An integral treatment for heat and mass transfer along a vertical wall by natural convection in a porous media 
    Singh, B. B. (Selcuk University Research Center of Applied Mathematics, 2006)
    This paper deals with the free convective heat and mass transfer along a vertical wall embedded in a fluid saturated porous medium by using integral method . The governing parameters for the problem are the buoyancy ratio ...
  • Determining the optimal sample size in the Monte Carlo experiments 
    Ata, Mustafa Y. (Selcuk University Research Center of Applied Mathematics, 2006)
    A convergence criterion for the Monte Carlo estimates will be proposed which can be used as a stopping rule for the Monte Carlo experiments. The proposed criterion searches a convergence band of a given width and length ...
  • Wald-type statistics in heteroscedastic linear models 
    Akdeniz, Esra; Akritas, Michael G. (Selcuk University Research Center of Applied Mathematics, 2006)
    In this paper we consider the heteroscedastic linear models and consider Wald-type test statistics for the hypothesis of no factor effects and no interactions. Designs with independent data are considered. The statistics ...
  • One way fixed effect analysis of variance under variance heterogeneity and a solution proposal 
    Özdemir, A. Fırat; Kurt, Serdar (Selcuk University Research Center of Applied Mathematics, 2006)
    In the first part of this study, the results of heteroscedasticity in one way fixed effect ANOVA have been examined with a close concern on large sample approximations of treatment and error mean sum of squares and distortion ...
  • Training based method for heat flux function estimation using sensed temperatures 
    Mohmmadzaheri, Morteza; Asef-Afshar, Orang; Mirsepahi, Ali; Bornak, Mansur (Selcuk University Research Center of Applied Mathematics, 2006)
    Heat flux function estimation problems are inverse heat conduction problems which heat flux functions (boundary or initial conditions) are the unknowns and temperature distribution (at present and earlier times) is available. ...
  • Thermal turbulent simulation of gas-solid flow in a riser 
    Mansoori, Zohreh; Ramezani, Payam; Tabrizi, Hassan Basirat; Saffar-Avval, Majid (Selcuk University Research Center of Applied Mathematics, 2006)
    A new dynamic and thermal turbulent Gas- solid flow simulation is introduced.Gas- solid flow simulation by the new dynamic and thermal turbulent time scale transport model (k-?,k_{?}-?_{?}) shows the advantage of calculating ...
  • The Mrl function of the K-Out-Of-N system with nonidentical components in the system level 
    Bayramoğlu, İsmihan; Gürler, Selma (Selcuk University Research Center of Applied Mathematics, 2006)
    A k-out-of-n system is working if at least k of its n components are operating. The system breaks down at the time of the (n-k+1) th component failure. Since all components start working at the same time, this approach ...
  • Image enhancement in positron emission tomography using expectation maximization 
    Erol, Halil; Köklükaya, Etem; Alkan, Ahmet (Selcuk University Research Center of Applied Mathematics, 2006)
    Positron Emission Tomography (PET) tomography is one of the imaging modality. PET Tomography scanners collect measurements of a patient's in vivo radiotracer distribution. These measurements are reconstructed into ...
  • The iterative stein rule estimator of the disturbance variance in a linear regression model when the proxy variables are used 
    Ünal, Deniz; Akdeniz, Fikri (Selcuk University Research Center of Applied Mathematics, 2006)
    In case of the existence of the unobservable relevant regressors, a way of estimating the model is to use the proxy variables as regressors. Here we consider the estimator of the disturbance variance in a linear regression ...
  • On the applications of hadamard square root and hadamard inverse 
    Akbulak, Mehmet; Bozkurt, Durmuş; Türkmen, Ramazan; Kaygısız, Kenan (Selcuk University Research Center of Applied Mathematics, 2006)
    In this study, we have established upper and lower bounds for the spectral norm of Hadamard square root and Hadamard inverse of the matrix T_{1/2,1} where the matrix T_{1/2,1} is Cauchy-Toeplitz matrix. We have also obtained ...