sherpa/romeo

Now showing items 77-96 of 98

    • Quasi 2-absorbing second modules 

      Ansari-Toroghy, H.; Farshadifar, F. (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this paper, we will introduce the notion of quasi 2-absorbing second modules over a commutative ring and obtain some basic properties of this class of modules.
    • Quasi-Sasakian Structures on 5-dimensional Nilpotent Lie Algebras 

      Özdemir, Nilüfer; Aktay, Şirin; Solgun, Mehmet (Ankara Üniversitesi, 2019-02-01)
      In this study, we examine the existence of quasi-Sasakian structures on nilpotent Lie algebras of dimension five. In addition, we give some results about left invariant quasi-Sasakian structures on Lie groups of dimension ...
    • Quasi-subordination and coefficient bounds for certain classes of meromorphic functions of complex order 

      Zayed, H. M.; Bulut, Serap; Mostafa, A. O. (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this paper, we obtain Fekete-Szegö functional |a₁-μa₀²| for functions of the classes Σ_{q}^{∗}(ϕ) and Σ_{q,λ,b}^{∗}(g,ϕ) using quasi-subordination. Sharp bounds for the Fekete-Szegö functional |a₁-μa₀²| are obtained. ...
    • Relative controllability results for nonlinear higher order fractional delay integrodifferential systems with time varying delay in control 

      Sivabalan, M.; Sathiyanathan, K. (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      This paper is concerned with the controllability of nonlinear higher order fractional delay integrodifferential equations with time varying delay in control, which involved Caputo derivatives of any different orders. A ...
    • Reviving some geometric aspects of shrinkage estimation in linear models 

      Akdeniz, Fikri; Öztürk, Fikri (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      It is well known that the least squares estimator is the best linear unbiased estimator of the parameter vector in a classical linear model. But, it is `too long' as a vector and unreliable, confidence intervals are broad ...
    • Robust Bayesian Regression Analysis Using Ramsay-Novick Distributed Errors with Student-t Prior 

      Arslan, Olcay; Çankaya, Emel; Kaya, Mutlu (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      This paper investigates bayesian treatment of regression modelling with Ramsay - Novick (RN) distribution specifically developed for robust inferential procedures. It falls into the category of the so-called heavy-tailed ...
    • Smarandache Curves According to Sabban Frame Belonging to Mannheim Curves Pair 

      Şenyurt, Süleyman; Altun, Yasin; Cevahir, Ceyda (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this paper, we investigate special Smarandache curves according to Sabban frame, using the idea of Mannheim partner curve of spherical indicatrix. We created Sabban frame by means of Mannheim partner curve of spherical ...
    • Smarandache Curves in three dimensional Lie groups 

      Değirmen, Caner; Okuyucu, O. Zeki; Yıldız, Ö. Gökmen (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this paper, we introduce special Smarandache curves and obtain Frenet apparatus of a Smarandache curve in three dimensional Lie groups with a bi-invariant metric. Moreover, we give some relations between a helix or a ...
    • Solutions of the radial Schrödinger equation in hypergeometric and discrete fractional forms 

      Özturk, Ökkes; Yılmazer, Resat (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      The purpose of this present paper is to obtain the hypergeometric and discrete fractional solutions of the radial Schrödinger equation by using the nabla discrete fractional calculus operator.
    • Some Caputo K-Fractional Derivatives of Ostrowski Type Concerning (n + 1)-Differentiable Generalized Relative Semi-(r; m; p; q; h1; h2)-Preinvex Mappings 

      KASHURİ, Artion; LİKO, Rozana (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this article, we first presented some integral inequalities for Gauss-Jacobi type quadrature formula involving generalized relative semi-(r;m,p,q,h₁,h₂)-preinvex mappings. And then, a new identity concerning ...
    • Some Geometric Characterizations of a Fractional Banach Set 

      Özger, Faruk (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      This paper is devoted to investigate the modular structure of a fractional Banach set of sequences and prove that this set is reflexive and convex and it possesses uniform Opial, (β), (L) and (H) properties. The convexity ...
    • Some inequalities for positive multilinear mappings 

      Gümüş, İbrahim Halil; Akic, Mustafa (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this paper we obtain some improvements and generalizations of inequalities for positive multilinear mappings.
    • Some new d-orthogonal polynomial sets of Sheffer type 

      Varma, Serhan (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this paper, we present some new Sheffer type d-orthogonal polynomial sets. Moreover, we obtain the d-dimensional functional vector ensuring the d-orthogonality of these new polynomial sets.
    • Stability of the Reconstruction Discontinuous Sturm-Liouville Problem 

      Ercan, Ahu; Panakhov, Etibar (Ankara Üniversitesi, 2019-02-01)
      In this work, we study stability of the inverse spectral problem for the Sturm-Liouville operator -D²+q with discontinuity boundary conditions inside a finite closed interval. We use the method which is given by Ryabushko ...
    • Stabilized FEM Solutions of MHD Equations Around a Solid and Inside a Conducting Medium 

      Aydın, S.H. (Ankara Üniversitesi, 2019-02-01)
      In this study, the numerical solution of the magnetohydrodynamic (MHD) flow is considered in a circular pipe around a conducting solid and in an insulating or conducting medium. An external magnetic field is applied through ...
    • Statistical inference for geometric process with the Rayleigh distribution 

      Aydoğdu, Halil; Biçer, Cenker; Kara, Mahmut; Biçer, Hayrinisa Demirci (Ankara Üniversitesi, 2019-02-01)
      The aim of this study is to investigate the solution of the statistical inference problem for the geometric process (GP) when the distribution of first occurrence time is assumed to be Rayleigh. Maximum likelihood (ML) ...
    • Structural derivatives on time scales 

      Bayour, Benaoumeur; Torres, Delfim F. M. (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      We introduce the notion of structural derivative on time scales. The new operator of differentiation unifies the concepts of fractal and fractional order derivative and is motivated by lack of classical differentiability ...
    • The Minkowski's inequalities utilizing newly defined generalized fractional integral operators 

      Usta, Fuat; Budak, Hüseyin; Ertugral, Fatma; Sarıkaya, Mehmet Zeki (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      Motivated by the recent generalized fractional integral operators proposed by Tunc et. al. <cite>tunc</cite>, we establish a generalization of the reverse Minkowski's inequalities. Within this context, we provide new upper ...
    • T₁ Approach Spaces 

      Baran, Mehmet; Qasim, Muhammad (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this paper, we characterize both T₁ and local T₁ limit (resp. gauge) approach spaces as well as show how these concepts are related to each other. Finally, we compare these T₁ and the usual T₁ approach spaces.
    • Vertical and complete lifts of sections of a (dual) vector bundle and Legendre duality 

      PEYGHAN, E.; NOURMOHAMMADİFAR, L.; ARCUŞ, C. M. (Ankara Üniversitesi, 2019-02-01)
      Using the covariant derivative for exterior forms of a (dual) vector bundle, the complete lift of an arbitrary section of a (dual) vector bundle is discovered. A theory of Legendre type and Legendre duality between vertical ...