Yazar "Hatipoğlu, Veysel Fuat" için listeleme
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Application of a New Quantitative Approach to Stock Markets: Minimum Spanning Tree
Hatipoğlu, Veysel Fuat (2017)Gıda ağları, bilimsel atıflar, sosyal ağlar, iletişim ağları, internet ve etkileşen hisse senedi portföyleri gibi birbiriyle etkileşen bileşenleri içeren sistemler, karmaşık sistemler kavramı altında pek çok araştırmacı ... -
Approximate solutions of Volterra-Fredholm integro-differential equations of fractional order
Alkan, Sertan; Hatipoğlu, Veysel Fuat (Tbilisi Centre Math Sci, 2017)In this study, sine-collocation Method is introduced for solving Volterra-Fredholm integro-differential equations of fractional order. Fractional derivative is described in the Caputo sense, Obtained results are given to ... -
Cobweb model with conformable fractional derivatives
Bohner, Martin; Hatipoğlu, Veysel Fuat (Wiley, 2018)In this paper, the cobweb model is reformulated in terms of fractional-order derivatives. In particular, we describe linear cobweb models in continuous time by using conformable fractional-order derivatives. Then, the ... -
Dynamic cobweb models with conformable fractional derivatives
Bohner, Martin; Hatipoğlu, Veysel Fuat (Elsevier Sci Ltd, 2019)In this paper, basic and more realistic dynamic cobweb models are developed in terms of conformable fractional derivatives. The general solutions and stability criteria for the proposed models are given. Moreover, the ... -
An efficient scheme for solving a system of fractional differential equations with boundary conditions
Hatipoğlu, Veysel Fuat; Alkan, Sertan; Seçer, Aydın (Springer International Publishing Ag, 2017)In this study, the sinc collocation method is used to find an approximate solution of a system of differential equations of fractional order described in the Caputo sense. Some theorems are presented to prove the applicability ... -
Exponential Stability of Nonlinear Impulsive Dynamic Equations on Time Scales
Hatipoğlu, Veysel Fuat; Uçar, Deniz; Koçak, Zeynep Fidan (Hindawi Ltd, 2013)The purpose of this paper is to present the sufficient psi-exponential, uniform exponential, and global exponential stability conditions for nonlinear impulsive dynamic systems on time scales. -
Forecasting of COVID-19 Fatality in the USA: Comparison of Artificial Neural Network-Based Models
Hatipoğlu, Veysel Fuat (SPRINGERNATURE, 2023)The first death caused by the novel coronavirus in the USA was declared on February 29, 2020, in the Seattle area in Washington state. Forecasting the number of deaths has great importance in terms of public psychology and ... -
A Lyapunov Function for Logistic Equation on Time Scales
Hatipoğlu, Veysel Fuat (2018)In this study we focus on the stability of dynamic logistic equation which is used in single species population dynamics. Here we have introduced a quadratic Lyapunov function for generalized dynamic logistic equation on ... -
A NOVEL MODEL FOR THE CONTAMINATION OF A SYSTEM OF THREE ARTIFICIAL LAKES
Hatipoğlu, Veysel Fuat (AMER INST MATHEMATICAL SCIENCES, 2021)In this study, a new model has been developed to monitor the contamination in connected three lakes. The model has been motivated by two biological models, i.e. cell compartment model and lake pollution model. Haar wavelet ... -
A numerical algorithm for the solution of nonlinear fractional differential equations via beta-derivatives
Hatipoğlu, Veysel Fuat (Wiley, 2019)In this paper, the sinc-collocation method (SCM) is investigated to obtain the solution of the nonlinear fractional order differential equations based on the relatively new defined fractional derivative, beta-derivative. ... -
ON SOME BETA-FRACTIONAL INTEGRAL INEQUALITIES
Uçar, Deniz; Hatipoğlu, Veysel Fuat (Yildiz Technical Univ, 2019)In this paper, we obtain some new integral inequalities using beta-fractional integrals in the case of two synchronous functions. For this purpose we state and prove several theorems. Our results are pioneer for the ... -
Understanding the Impact of COVID–19 on Global Financial Network Using Graph Based Algorithm: Minimum Spanning Tree Approach
Hatipoğlu, Veysel Fuat (Sciendo, 2021)In this paper effects of COVID–19 pandemic on stock market network are analyzed by an application of operational research with a mathematical approach. For this purpose two minimum spanning trees for each time period namely ...