Güncel Gönderiler: Dergiler / Journals
Toplam kayıt 1136, listelenen: 381-400
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A piecewise analytical iterative method for a wire-mass model
(Işık University Press, 2023-01)A wire-mass model is considered, where the wire is elastic and the mass is attached to the wire. We propose a piecewise analytical iterative method for simulating the motion of the mass attached to the wire. Our proposed ... -
Determination of a time-dependent coefficient in the time-fractional wave equation with a non-classical boundary condition
(Işık University Press, 2023-01)In this paper, an initial-boundary value problem for the time-fractional wave equation is considered. Given an additional condition, a time-dependent coefficient is determined and the existence and uniqueness theorem for ... -
Spherical fuzzy matrices
(Işık University Press, 2023-01)In this paper, we introduce spherical fuzzy matrices (SFMs) which is an advanced tool of the fuzzy matrices, intuitionistic fuzzy matrices and picture fuzzy matrices. We investigate the basic properties of SFMs and compare ... -
Numerical optimization algorithm based on genetic algorithm for a data completion problem
(Işık University Press, 2023-01)This work presents numerical optimization algorithm based on genetic algorithm to solve the data completion problem for Laplace’s equation. It consists of covering the missing data on the inaccessible part of the boundary ... -
An iterative method for solving time-fractional partial differential equations with proportional delays
(Işık University Press, 2023-01)This article deals with an iterative method which is a new formulation of Adomian decomposition method for solving time-fractional partial differential equations (TFPDEs) with proportional delays. The fractional derivative ... -
Bayesian estimation using Lindley’s approximation of Inverted Kumaraswamy distribution based on lower record values
(Işık University Press, 2023-01)In this paper, we have considered estimation of unknown parameters based on lower record values for Inverted Kumaraswamy distribution. Maximum likelihood and approximate Bayes estimators based on lower record values for ... -
Pathos degree prime graph of a tree
(Işık University Press, 2023-01)Let T be a tree of order n (n ? 2). A pathos degree prime graph of T, written PDP(T), is a graph whose vertices are the vertices and paths of a pathos of T, with two vertices of PDP(T) adjacent whenever the degree of the ... -
Certain subclasses of analytic function by S?l?gean q-differential operator
(Işık University Press, 2023-01)The theory of q-analysis has many applications in various sub-fields of mathematics and quantum physics. In the present article, we define the class Tn(?, ?; q) using the S?l?gean q-differential operator. For functions ... -
Some fixed point results for ?-admissible multi-valued F-contractions
(Işık University Press, 2023-01)In the present paper, we prove some fixed point results for ?- admissible multi-valued F- contractions on metric spaces. This type of contraction is a generalization of some multi-valued contractions including Nedler’s and ... -
On solution of BG?Volterra integral equations
(Işık University Press, 2023-01)In this study, we center upon obtaining the solution of linear bigeometric Volterra integral equations of the second kind in the sense of bigeometric calculus. The method of successive substitutions and resolvent kernel ... -
K-product cordial labeling of fan graphs
(Işık University Press, 2023-01)Let f be a map from V (G) to {0, 1, ..., k ? 1} where k is an integer, 1 ? k ? |V (G)|. For each edge uv assign the label f(u)f(v)(mod k). f is called a k-product cordial labeling if |vf (i) ? vf (j)| ? 1, and |ef (i) ? ... -
Local distance irregular labeling of graphs
(Işık University Press, 2023-01)We introduce the notion of distance irregular labeling, called the local distance irregular labeling. We define ? : V (G) ?? {1, 2, . . . , k} such that the weight calculated at the vertices induces a vertex coloring if ... -
Solving existence problems via F-contraction in modified b-metric spaces
(Işık University Press, 2022)In this paper, we introduce a new abstract structure, expanded b-metric, as an natural extension of b-metric. We also define basic topological notions in expanded bmetric to able to investigate the existence of fixed point ... -
A two phase age dependent and two-mutation stochastic model of carcinogenesis
(Işık University Press, 2022)An age dependent and two-mutation stochastic model of carcinogenesis is formulated and studied. In this model, we introduce a fitness age T, (a positive constant) for each cell to divide into two cells. A normal cell if ... -
Whole domination in graphs
(Işık University Press, 2022)In this paper, a new parameter of domination number in graphs is defined which is called whole domination number denoted by ?wh(G). Some bounds of whole domination number and the number of edges depend on it has been ... -
Analysis of a dynamic contact problem for electro-viscoelastic materials with Tresca’s friction
(Işık University Press, 2022)We consider a mathematical model which describes the dynamic process of contact between two electro-viscoelastic bodies with damage. The contact is bilateral and is modeled with Tresca’s friction law. The damage of the ... -
Some results on k-hypergeometric function
(Işık University Press, 2022)In this paper, we establish integral representation and differentiation formulas for k-Gauss hypergeometric function 2F1,k(a, b; c; z) and develops a relationship with k-Confluent hypergeometric function 1F1,k(a, b; c; z), ... -
Amplified eccentric connectivity index of graphs
(Işık University Press, 2022)A new distance based graphical index, coined as amplified eccentric connectivity index, has been established and the formulae to calculate the amplified eccentric connectivity index of some standard graphs, Dutch windmill ... -
A study on finite difference method using explicit and monotone scheme hyperbolic partial differential equation
(Işık University Press, 2022)All the problems almost in science and technology can be expressed mathematically in the form of partial differential equation. Mainly all the types of partial differential equation has a specific characters. Specially ... -
A new approach to find an approximate solution of linear initial value problems with high degree of accuracy
(Işık University Press, 2022)This work investigates a new approach to find closed form solution to linear initial value problems (IVP). Classical Bernoulli polynomials have been used to derive a finite set of orthonormal polynomials and a finite ...
