sherpa/romeo

Now showing items 1-20 of 40

    • An approach for designing a surface pencil through a given geodesic curve 

      Atalay, Günnur Şaffak; Güler, Fatma; Bayram, Ergin; Kasap, Emin (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In the present paper, we propose a new method to construct a surface interpolating a given curve as the geodesic curve of it. Also, we analyze the conditions when the resulting surface is a ruled surface. In addition, ...
    • Bivariate Bernstein polynomials that reproduce exponential functions 

      Bozkurt, Kenan; Özsaraç, Fırat; Aral, Ali (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, we construct Bernstein type operators that reproduce exponential functions on simplex with one moved curved side. The operator interpolates the function at the corner points of the simplex. Used function ...
    • Natural and conjugate mates of Frenet curves in three-dimensional Lie group 

      Mak, Mahmut (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this study, we introduce the natural mate and conjugate mate of a Frenet curve in a three dimensional Lie group G with bi-invariant metric. Also, we give some relationships between a Frenet curve and its natural ...
    • Differential geometric aspects of nonlinear Schrödinger equation 

      Erdoğdu, Melek; Yavuz, Ayşe (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      The main scope of this paper is to examine the smoke ring (or vortex filament) equation which can be viewed as a dynamical system on the space curve in E³. The differential geometric properties the soliton surface accociated ...
    • On exponential type P-functions 

      Numan, Selim; İşcan, İmdat (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, we introduce and study the concept of exponential type P-function and establish Hermite-Hadamard's inequalities for this type of functions. In addition, we obtain some new Hermite-Hadamard type inequalities ...
    • Best proximity point theorems for proximal b-cyclic contractions on b-metric spaces 

      Aslantaş, Mustafa (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, we first introduce a new notion of the property (M_{C}) to improve and generalize the property (G_{C}). After that, we present two new concepts, proximal b-cyclic contraction of first type and second type, ...
    • Medical model estimation with particle swarm optimization 

      Sarı, Murat; Ahmad, Arshed; Uslu, Hande (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, a nonlinear medical model based on observational variables has been produced and the particle swarm optimization (PSO) technique, which is an effective technique to predict optimum parameters of the biomedical ...
    • Set operators and associated functions 

      Modak, Shyamapada; Selim, Sk (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      The study of two operators local function and the set operator ψ on the ideal topological spaces are likely to be same to the study of closure and interior operator of the topological spaces. However, they are not ...
    • Intuitionistic fuzzy hypersoft sets 

      Yolcu, Adem; SMARANDACHE, Florentin; Öztürk, Taha Yasin (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, a new environment namely, intuitionistic fuzzy hypersoft set (IFHSS) is defined. We introduce some fundamental operators of intuitionistic fuzzy hypersoft sets such as subset, null set, absolute set, complement, ...
    • Implementation of computation formulas for certain classes of Apostol-type polynomials and some properties associated with these polynomials 

      Küçükoğlu, İrem (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      The main purpose of this paper is to present various identities and computation formulas for certain classes of Apostol-type numbers and polynomials. The results of this paper contain not only the λ -Apostol-Daehee ...
    • Implementation of DRBEM for the determination of the heat flux in an inverse problem 

      Alsoy-Akgün, Negehan (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      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 ...
    • Lump-type solutions of a new extended (3+1)-dimensional nonlinear evolution equation 

      Yıldırım, Yakup; Yaşar, Emrullah (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, we study lump-type solutions to a new extended (3+1)-dimensional nonlinear evolution equation which appears in the field of wave propagation in the nonlinear systems. We generate these types of solutions by ...
    • On the lifts of F_{a}(5,1)-structure on tangent and cotangent bundle 

      JABRAİLZADE, Fidan (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      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 h-sum operators 

      Aslıyüce, Serkan; Güvenilir, Ayşe Feyza (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      The aim of this study is to establish new discrete inequalities for synchronous functions using fractional order delta and nabla h-sum operators. We give examples to illustrate our results.
    • On the Lipschitz stability of inverse nodal problem for Dirac system 

      Yılmaz, Emrah; Kemaloğlu, Hikmet (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      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 ...
    • Determination of a time-dependent potential in a Rayleigh-Love equation with non-classical boundary condition 

      Tekin, İbrahim (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      Mathematical model of the longitudinal vibration of bars includes higher-order derivatives in the equation of motion under considering the effect of the lateral motion of a relatively thick bar. This paper considers such ...
    • A metric formula on a quotient space which is related to the sequence space Σ 2 

      Saltan, Mustafa; Aslan, Nisa (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      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 ...
    • Existence and decay of solutions for a higher-order viscoelastic wave equation with logarithmic nonlinearity 

      Pişkin, Erhan; Irkıl, Nazlı (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      The main goal of this paper is to study for the local existence and decay estimates results for a high-order viscoelastic wave equation with logarithmic nonlinerity. We obtain several results: Firstly, by using Feado-Galerkin ...
    • A study on the modeling and simulation for the motor unit action potential 

      Özbek, Levent; Temuçin, Çağrı; Cengiz, Bülent (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      Electromyography (EMG) is a technique that gives information about the neuromuscular pattern and function which is commonly-used in the practice of neurology. With this method, the signals obtained from the muscle cells ...
    • Deferred Nörlund statistical relative uniform convergence and Korovkin-type approximation theorem 

      Demirci, Kamil; Dirik, Fadime; Yıldız, Sevda (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, we define the concept of statistical relative uniform convergence of the deferred Nörlund mean and we prove a general Korovkin-type approximation theorem by using this convergence method. As an application, ...