sherpa/romeo

Cilt:68 Sayı:02 (2019): Recent submissions

Now showing items 21-40 of 90

    • Algorithmic approach of cordial labeling on Cartesian product between balanced bipartite graph and path 

      Ghosy, Sumonta; Pal, Anita (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      Cordial labeling is one of the useful labeling in the realm of graph labeling. For the graph G=(V,E) vertex set V is label by {0,1}, where labeling of edge set E calculated by absolute difference between the end vertices ...

    • Fuzzy Markov chains modeling of aggregation processes 

      Çatak, Nursin Bas (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      In this paper, the fuzzy Markov chain method is proposed as a new discrete solution of a population balance equation for an aggregation process. In order to validate the proposed method, analytical solution of an aggregation ...

    • https://doi.org/10.31801/cfsuasmas.586057 

      Shahzad, Usman; Luengo, Amelia Victoria Garcia; Koyuncu, Nursel; Hanif, Muhammad (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      Koyuncu and Kadilar <cite>kk.2009</cite> introduced a family of estimators under simple random sampling. In this article; we adapt these estimators for ranked set sampling. Further, we suggest a regression-type estimator ...

    • A new subclass of uniformly spirallike functions with fixed coefficients 

      Balachandar, Geetha (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      In this paper a new subclass of uniformly spirallike functions is defined and several properties like coefficient estimate, closure theorems, distortion theorems, radii of starlikeness and convexity are studied.

    • Approximation by Nörlund and Riesz means in weighted Lebesgue space with variable exponent 

      Testici, Ahmet (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      We investigate the approximation properties of Nörlund and Riesz means of trigonometric Fourier series are investigated in the subset of weighted Lebesgue space with variable exponent.

    • On Stancu type generalization of (p,q)-Baskakov-Kantorovich operators 

      Kanat, Kadir; Sofyalıoğlu, Melek (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      In the current paper, we introduce Stancu type generalization of Baskakov-Kantorovich operators based on (p, q)-integers and estimate the moments. We show the convergence of the new operators via the weighted Korovkin ...

    • On generic submanifold of Sasakian manifold with concurrent vector field 

      Yoldaş, Halil İbrahim; Meriç, Şemsi Eken; Yaşar, Erol (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      In the present paper, we deal with the generic submanifold admitting a Ricci soliton in Sasakian manifold endowed with concurrent vector field. Here, we find that there exists never any concurrent vector field on the ...

    • ω-continuity on generalized neighbourhood systems 

      Yıldırım, Esra Dalan (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      We introduce ω -weakly- ( g 1 , g 2 ) -continuous functions on generalized topological spaces and study their relations with other classes of generalized continuous functions given in [1,8]. Then, we define ...

    • Some integral inequalities of the Hermite-Hadamard type for s-convex stochastic processes on n-coordinates 

      Okur, Nurgül; Karahan, Vildan (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      In this study, we identified s-convexity of first and second sense for multidimensional stochastic processes. Concordantly, we verified Hermite-Hadamard type inequalities for these processes. Besides, we exemplified these ...

    • The matrix sequence in terms of bi-periodic Fibonacci numbers 

      Coşkun, Arzu; Taşkara, Necati (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      In this paper, we define the bi-periodic Fibonacci matrix sequence that represent bi-periodic Fibonacci numbers. Then, we investigate generating function, Binet formula and summations of bi-periodic Fibonacci matrix sequence. ...

    • Loxodromes on helicoidal surfaces and tubes with variable radius in E⁴ 

      Babaarslan, Murat (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      In this paper, we generalize the equations of loxodromes on helicoidal surfaces and canal surfaces in E^3 to the case of 4-dimension (E^4). Also we give some examples via Mathematica.

    • Spherical indicatrices of a Bertrand curve in three dimensional Lie groups 

      Çakmak, Ali; Kızıltuğ, Sezai (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      In this paper, new representations of a Bertrand curve pair in three dimensional Lie groups with bi-invariant metric are given. Besides, the spherical indicatrices of a Bertrand curve pair are obtained and the relations ...

    • Convergence of solutions of nonautonomous Nicholson's Blowflies model with impulses 

      Demirci, Elif; Karakoç, Fatma (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      This paper deals with a nonautonomous Nicholson's blowflies model with impulses. It is shown that under the proper conditions every positive solution of the model approaches to a constant as t tends to infinity.

    • Certain subclasses of bi-univalent functions related to k-Fibonacci numbers 

      Güney, Özlem H.; Murugusundaramoorthy, G.; Sokol, Janusz (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      In this paper, we introduce and investigate new subclasses of bi-univalent functions related to k-Fibonacci numbers. Furthermore, we nd estimates of first two coecients of functions in these classes. Also, we obtain the ...

    • Automatic structure for generalized Bruck-Reilly ∗-extension of a monoid 

      Karpuz, Eylem Güzel (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      In the present paper, we study the automaticity of generalized Bruck-Reilly ∗-extension of a monoid. Under some certain situations, we prove that the automaticity of the monoid implies the automaticity of the generalized ...

    • The inverse kinematics of rolling contact of timelike curves lying on timelike surfaces 

      Aydınalp, Mehmet; Kazaz, Mustafa; Uğurlu, Hasan Hüseyin (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      Rolling contact between two surfaces plays an important role in robotics and engineering such as spherical robots, single wheel robots, and multi-fingered robotic hands to drive a moving surface on a fixed surface. The ...

    • Prime ideals of nearness semirings 

      Öztürk, Mehmet Ali; Temur, İrfan (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      The aim of this paper is to introduced the concept of prime (semiprime) ideals of nearness semiring theory and give some properties of such ideals.

    • Schatten-von Neumann characteristic of infinite tridiagonal block operator matrices 

      Al, Pembe İpek; İsmailov, Zameddin (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      In this paper, the boundedness and compactness properties of infinite tridiagonal block operator matrices in the direct sum of Hilbert spaces are studied. The necessary and sufficient conditions for these operators belong ...

    • On some new inequalities of Hermite Hadamard types for hyperbolic p-convex functions 

      Yehia, Zeinab; Faried, Nashat; Ali, Mohamed S. S. (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      In this paper, we show that the power function fn(x) is hyperbolic p-convex function. Furthermore, we establish some new integral inequalities for higher powers of hyperbolic p-convex functions. Also, some applications for ...

    • Fixed point results for Pata contraction on a metric space with a graph and its application 

      Arian, Asma; Ramezani, Maryam (Ankara Üniversitesi Fen Fakültesi, 2019-08-01)
      Let ( X , d ) be a metric space endowed with a graph G such that the set V ( G ) of vertices of G coincides with X ‎. ‎We define the notion of Pata- G -contraction type maps and obtain some fixed ...