Browsing Cilt:70 Sayı:01 (2021) by Issue Date
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Implementation of computation formulas for certain classes of Apostoltype polynomials and some properties associated with these polynomials
(Ankara Üniversitesi Fen Fakültesi, 20210630)The main purpose of this paper is to present various identities and computation formulas for certain classes of Apostoltype numbers and polynomials. The results of this paper contain not only the λ ApostolDaehee ... 
Implementation of DRBEM for the determination of the heat flux in an inverse problem
(Ankara Üniversitesi Fen Fakültesi, 20210630)A numerical investigation of inverse unsteady natural convection flow in a square cavity filled with C u − water nanofluid is performed. In the direct problem, the enclosure is bounded by one isothermally heated ... 
Determination of a timedependent potential in a RayleighLove equation with nonclassical boundary condition
(Ankara Üniversitesi Fen Fakültesi, 20210630)Mathematical model of the longitudinal vibration of bars includes higherorder derivatives in the equation of motion under considering the effect of the lateral motion of a relatively thick bar. This paper considers such ... 
On the Lipschitz stability of inverse nodal problem for Dirac system
(Ankara Üniversitesi Fen Fakültesi, 20210630)Inverse nodal problem on Dirac operator is determination problem of the parameters in the boundary conditions, number m and potential function V by using a set of nodal points of a component of two component vector ... 
On the lifts of F_{a}(5,1)structure on tangent and cotangent bundle
(Ankara Üniversitesi Fen Fakültesi, 20210630)This paper consist of three main sections. In the first part, we obtain the complete lifts of the F_{a}(5,1)structure on tangent bundle. We have also obtained the integrability conditions by calculating the Nijenhuis ... 
Chebyshev type inequalities with fractional delta and nabla hsum operators
(Ankara Üniversitesi Fen Fakültesi, 20210630)The aim of this study is to establish new discrete inequalities for synchronous functions using fractional order delta and nabla hsum operators. We give examples to illustrate our results. 
A study on the modeling and simulation for the motor unit action potential
(Ankara Üniversitesi Fen Fakültesi, 20210630)Electromyography (EMG) is a technique that gives information about the neuromuscular pattern and function which is commonlyused in the practice of neurology. With this method, the signals obtained from the muscle cells ... 
Bootstrap based multistep ahead joint forecast densities for financial intervalvalued time series
(Ankara Üniversitesi Fen Fakültesi, 20210630)This study presents two intervalvalued time series approaches to construct multivariate multistep ahead joint forecast regions based on two bootstrap algorithms. The first approach is based on fitting a dynamic bivariate ... 
Several integral inequalities for generalized RiemannLiouville fractional operators
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, using a generalized integral operator, of the RiemannLiouville type, defined and studied in a previous work by the authors, we obtain various integral inequalities for positive functions, which contains ... 
Changeconstrained stochastic programming problem with normal, t and skew normal, skew t distributions
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, a change constrained optimization programming problem is studied under the assumption that the model coe¢ cients in the inequalities defned as random variables are independent and assumed to be Normal, t; ... 
Some notes on lifts of the F((υ+1),λ²(υ1))structure on cotangent and tangent bundle
(Ankara Üniversitesi Fen Fakültesi, 20210630)The F^{v+1}λ²F^{v1}=0 structure (v≥3) have been studied by Kim J. B. K75. Later, Srivastava S.K studied on the complete lifts of (1,1) tensor field F satisfying structure F^{v+1}λ²F^{v1}=0 and extended in Mⁿ to cotangent ... 
Existence and decay of solutions for a higherorder viscoelastic wave equation with logarithmic nonlinearity
(Ankara Üniversitesi Fen Fakültesi, 20210630)The main goal of this paper is to study for the local existence and decay estimates results for a highorder viscoelastic wave equation with logarithmic nonlinerity. We obtain several results: Firstly, by using FeadoGalerkin ... 
A metric formula on a quotient space which is related to the sequence space Σ 2
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, we first define an equivalence relation on the sequence space Σ 2 . Then we equip the quotient set Σ 2 / ∼ with a metric d 1 . We also determine an isometry map between the metric spaces ... 
Deferred Nörlund statistical relative uniform convergence and Korovkintype approximation theorem
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, we define the concept of statistical relative uniform convergence of the deferred Nörlund mean and we prove a general Korovkintype approximation theorem by using this convergence method. As an application, ... 
The uniform convergence of Fourier series expansions of a SturmLiouville problem with boundary condition which contains the eigenparameter
(Ankara Üniversitesi Fen Fakültesi, 20210630)This paper is devoted to investigating the uniform convergence conditions of Fourier series expansions of continuous functions in terms of eigenfunctions of a SturmLiouville problem with eigenparameter in one of the ... 
Nonparametric modeling via twoway mixed effects design
(Ankara Üniversitesi Fen Fakültesi, 20210630)The classical Ftest for testing the hypothesis of no fixed main effects in a mixed effects design is valid under the assumption of normality, symmetry and variance homogeneity of the error terms assumption. We consider ... 
Some properties of a new class of analytic functions defined via Rodrigues formula
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, we introduce and study the new family of analytic functions via Rodrigues formula. Some main properties, the generating function, various recurrence relations and differential properties of these functions ... 
Pseudo pureinjective objects
(Ankara Üniversitesi Fen Fakültesi, 20210630)We show that if M and N are pure essentially equivalent objects in a finitely accessible additive category A such that M is pseudo pureN injective and N is pseudo pureMinjective, then M≅N. 
Univalence criteria of the certain integral operators
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, we give some sufficient conditions for the univalence of some integral operators. For this, we use the Becker's and generalized version of the well known Ahlfor's and Becker's univalence criteria. 
New fuzzy differential subordinations
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, some new fuzzy differential subordinations obtained by using the integral operator Im γ : An →An introduced in [13] are obtained.