Güncel Gönderiler: Dergiler / Journals
Toplam kayıt 1377, listelenen: 1081-1100
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Existence of nonoscillatory solutions for second-order nonlinear neutral differential equations with variable delays
(Işık University Press, 2019)In this work, an attempt is made to discuss the existence of nonoscillatory solutions of second order nonlinear neutral differential equations with variable delays. The main tools are Lebesgue’s dominated convergence theorem ... -
Distance spectra of some graph operations and some new distance equienergetic graphs of diameter 3
(Işık University Press, 2019)Two graphs of same order are said to be distance equienergetic if their distance energies are same. In this paper, we first give a partial insight on the distance spectrum of Mycielskian graphs and then we focus on ... -
On the spectra of cycles and paths
(Işık University Press, 2019)Energy of a graph was defined by E. Hückel as the sum of absolute values of the eigenvalues of the adjacency matrix during the search for a method to obtain approximate solutions of Schr¨odinger equation which include the ... -
Solution of constant coeffients partial derivative equations with Elzaki Transform method
(Işık University Press, 2019)In this study, we apply Elzaki Transform method, which is the modified version of Laplace and Sumudu transforms, for general n.th order constant coefficients partial diferential equations. With this method we can solve all ... -
Symmetric bi-T-derivation of lattices
(Işık University Press, 2019)In this paper, the notion of a new kind of derivation is introduced for a lattice (L, ?, ?), called symmetric bi-T-derivations on L as a generalization of derivation of lattices and characterized some of its related ... -
Existence of three solutions for impulsive fractional differential systems through variational methods
(Işık University Press, 2019)This paper is devoted to the study of the multiplicity results of existence of solutions for a class of impulsive fractional differential systems. Indeed, we will use variational methods for smooth functionals, defined on ... -
Some new results on integer additive set-valued signed graphs
(Işık University Press, 2019)Let X denotes a set of non-negative integers and P(X) be its power set. An integer additive set-labeling (IASL) of a graph G is an injective set-valued function f : V (G) ? P(X) ? {?} such that the induced function f+ : ... -
Analytic approach for love wave dispersion in an inhomogeneous layer lying over an irregular porous half-space
(Işık University Press, 2019)The present work examines the possibility of Love wave dispersion in an irregular interface of two different media expressively as an inhomogeneous layer and porous half-space. Dispersion equation has been computed in a ... -
On solution of modified matrix Sylvester equation
(Işık University Press, 2019)In the paper, the approach connected with the linear matrix inequalities for construction of solution of the modified Sylvester matrix equations, is used. The essence of the approach consists in replacement the initial ... -
A descent PRP conjugate gradient method for unconstrained optimization
(Işık University Press, 2019)It is well known that the sufficient descent condition is very important to the global convergence of the nonlinear conjugate gradient methods. Also, the direction generated by a conjugate gradient method may not be a ... -
Blind deconvolution using shearlet -tv regularization
(Işık University Press, 2019)In this article we propose two minimization models for blind deconvolution. In the first model, we use shearlet transform as a regularization term for recovering image. Also total variation method is used as a regularization ... -
Cooperative two-stage network dea: a goal programming approach
(Işık University Press, 2019-01-05)In this study, we present a two-stage data envelopment analysis method dealing with efficiency evaluation of decision making units with network structure. The key point of the study is that the suggested model optimizes ... -
Existence and multiplicity of weak solutions for perturbed Kirchhoff type elliptic problems with hardy potential
(Işık University Press, 2019)In this paper, we prove the existence of at least three weak solutions for a doubly eigenvalue elliptic systems involving the p-biharmonic equation with Hardy potential of Kirchhoff type with Navier boundary condition. ... -
Hydrodynamic limit of the Boltzmann-Monge-Ampere system
(Işık University Press, 2019)This paper investigates the hydrodynamic limit of the Boltzmann-MongeAmpere system in the so-called quasineutral regime and more precisely the convergence of the Boltzmann-Monge-Ampere system to the Euler equation by using ... -
Generalization of some inequalities for the polar derivative of polynomials with restricted zeros
(Işık University Press, 2019)If p(z) is a polynomial of degree n, then Govil [N.K. Govil, Some inequalities for derivative of polynomials, J. Approx. Theory, 66 (1991) 29-35.] proved that if p(z) has all its zeros in vertical bar z vertical bar <= k, ... -
One-dimensional cutting stock problem with divisible items: a case study in steel industry
(Işık University Press, 2019)This paper considers the one-dimensional cutting stock problem (1D-CSP) with divisible items, which arises in the steel industries. While planning the steel cutting operations, each item can be divided into smaller pieces, ... -
Exponential domination of tree related graphs
(Işık University Press, 2019)The well-known concept of domination in graphs is a good tool for analyzing situations that can be modeled by networks. Although a vertex in the graph can exert influence on, or dominate, all vertices in its immediate ... -
On some properties of normal ?-ideals in normal ?-semigroups
(Işık University Press, 2019)We introduce the concept of normal ?-ideal and bi-?-ideal in normal ?semigroups. We characterize the (normal) ?-semigroup and normal regular ?-semigroup in terms of elementary properties of bi-?-ideal proving the various ... -
Numerical solution of time-fractional order Fokker-Planck equation
(Işık University Press, 2019)In this article, new iterative method (NIM) is employed to find the numerical solution of linear and nonlinear time-fractional order Fokker-Planck equation (FPE), which is applied in many fields of engineering and applied ... -
Geometric function optimization subject to mixed fuzzy relation inequality constraints
(Işık University Press, 2019)In this paper, the mixed fuzzy relation geometric programming problem is considered. The Mixed Fuzzy Relation Inequality (MFRI) system is an importance extension of FRI. It is shown that its feasible domain is non-convex ...
