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#### Modified Welch Test Statistic For Anova Under Weibull Distribution

(Hacettepe Univ, Fac Sci, 2016)

A modification to Welch test statistic is proposed to test the equality of population means of various groups under a Weibull distribution. The proposed test statistic is simple and corresponds to the standard Welch test ...

#### On Jacobson And Nil Radicals Related To Polynomial Rings

(Korean Mathematical Soc, 2016)

This note is concerned with examining nilradicals and Jacobson radicals of polynomial rings when related factor rings are Armendariz. Especially we elaborate upon a well-known structural property of Armendariz rings, ...

#### Some Imputation Methods For Missing Data In Sample Surveys

(Hacettepe Univ, Fac Sci, 2016)

The present work suggests some imputation methods to deal with the problems of non-response in sample surveys. The imputation methods presented in this work lead to the precise estimation strategies of population mean. ...

#### Robust Model Selection Criteria For Robust S And Lts Estimators

(Hacettepe Univ, Fac Sci, 2016)

Outliers and multi-collinearity often have large influence in the model/variable selection process in linear regression analysis. To investigate this combined problem of multi-collinearity and outliers, we studied and ...

#### Structural Stability Analysis Of Solutions To The Initial Boundary Value Problem For A Nonlinear Strongly Damped Wave Equation

(Scientific Technical Research Council Turkey-Tubitak, 2016)

In this paper the initial-boundary value problem for a nonlinear strongly damped wave equation is considered. We analyze the structural stability of solutions of the nonlinear strongly damped wave equation with coefficients ...

#### Nearly Perfect Sequences With Arbitrary Out-Of-Phase Autocorrelation

(Amer Inst Mathematical Sciences-Aims, 2016)

A sequence of period n is called a nearly perfect sequence of type gamma if all out-of-phase autocorrelation coefficients are a constant gamma. In this paper we study nearly perfect sequences (NPS) via their connection to ...

#### 1-Dimensional Harnack Estimates

(Amer Inst Mathematical Sciences-Aims, 2016)

Let u be a non-negative super-solution to a 1-dimensional singular parabolic equation of p-Laplacian type (1 < p < 2). If u is bounded below on a time-segment {y} x (0, T] by a positive number M, then it has a power like ...

#### Subsymmetry and Asymmetry Models for Multiway Square Contingency Tables with Ordered Categories

(De Gruyter Open Ltd, 2016)

This paper suggests several models that describe the symmetry and asymmetry structure of each subdimension for the multiway square contingency table with ordered categories. A classical three-way categorical example is ...

#### Qualitative Results on the Dynamics of A Berger Plate with Nonlinear Boundary Damping

(Pergamon-Elsevier Science Ltd, 2016)

The dynamics of a (nonlinear) Berger plate in the absence of rotational inertia are considered with inhomogeneous boundary conditions. In our analysis, we consider boundary damping in two scenarios: (i) free plate boundary ...

#### Evaluation Of Spectrum Of 2-Periodic Tridiagonal-Sylvester Matrix

(Scientific Technical Research Council Turkey-Tubitak, 2016)

The Sylvester matrix was first defined by JJ Sylvester. Some authors have studied the relationships between certain orthogonal polynomials and the determinant of the Sylvester matrix. Chu studied a generalization of the ...