Browsing by Author "Acay, Bahar"

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Fractional physical problems including wind-influenced projectile motion with mittag-leffler kernel
(2020) Baleanu, Dumitru; Baş, Erdal; Baleanu, Dumitru; Acay, Bahar; 56389
In this manuscript the fractional form of wind-influenced projectile motion equations which have a significant place in physics is extensively investigated by preserving dimensionality of the physical quantities for fractional operators and features of wind-influenced projectile motion are computed analytically in view of Atangana-Baleanu (ABC) fractional derivative in Caputo sense. Moreover, ABC fractional derivative with (n + α)th-order and its Laplace transform (LT) are obtained, α ∈ [0, 1] and n ∈ ℕ. A comparative analysis based on the classical case is carried out in order to shed more light on the potent of the ABC fractional operator. Hence we present the results for some values of α, k friction constant, different wind effects and different masses in 3D illustrations by comparing Caputo fractional operator. Thus, we can observe trajectory, time of flight, maximum height and range clearly. Moreover, the obtained results are shown to correspond to the classical case while the order α → 1. © 2020 the Author(s), licensee AIMS Press.
Mathematical modeling of pine wilt disease with Caputo fractional operator
(2021) Baleanu, Dumitru; Acay, Bahar; Mustapha, Umar Tasiu; İnc, Mustafa; Baleanu, Dumitru; 56389
In this work, we investigate the transmission dynamics of pine wilt disease infection and developed a new model utilizing Caputo fractional-order derivative. Moreover, with the use of fixed point theorem, the existence and uniqueness of the pine wilt disease model are obtained under Caputo operator. Using forward normalized sensitivity index, we determine the most sensitive parameters essential for the control of the infection and the results show that, decreasing the values of contact rate of a susceptible vector with infected pine trees and progression rate play a significant role in controlling the spread of pine wilt disease infection. On the other hand, we obtain different numerical simulations results of the model using the appropriate parameter values. Hence, from the graphs, it can be concluded that Caputo fractional operator gives more biologically observable behavior of the proposed disease model thanks to the changed fractional order. Compared to the previously built integer order model, the non-integer order derivative provided more efficient and flexible information about the complexity of the model's dynamics. © 2020