36 citations · 54 across the 10 of their papers we have counts for
12 papers
Decision-Related Cognitive Signatures from Fast-Slow Dynamics: A Low-Dimensional Observation-Operator Framework
Furkan Emre Isik, Ali Demirci
Repeated decisions exhibit temporal structures such as persistence, direction-dependent switching, recurrent alternation, and abrupt transitions. We examine the generative sufficie…
Near critical interior dynamics in a model of state society interaction
Kerime Nur Kavadar, Ali Demirci, Furkan Emre Isik
We study a normalized two dimensional competitive LotkaVolterra system describing the interaction between state power and society power. Restricting attention to the positively…
On the Rosenau equation: Lie symmetries, periodic solutions and solitary wave dynamics
Ali Demirci, Yasin Hasanoglu, Gulcin M. Muslu +1
In this paper, we first consider the Rosenau equation with the quadratic nonlinearity and identify its Lie symmetry algebra. We obtain reductions of the equation to ODEs, and find…
Hopf bifurcation of a financial dynamical system with delay
Y. Çalış, A. Demirci, C. Özemir
The aim of this work is to investigate the qualitative behaviour of a financial dynamical system which contains a time delay. We investigate the dynamic response of this system of…
A New Susceptible-Infectious (SI) Model With Endemic Equilibrium
Ayse Peker-Dobie, Semra Ahmetolan, Ayse Humeyra Bilge +1
The focus of this article is on the dynamics of a new susceptible-infected model which consists of a susceptible group () and two different infectious groups ( and ).…
Nonlinear Modulation of Periodic Waves in the Cylindrical Gardner Equation
Gunay Aslanova, Semra Ahmetolan, Ali Demirci
The propagation of the dispersive shock waves (DSWs) is investigated in the cylindrical Gardner (cG) equation, which is obtained by employing a similarity reduction to the two spac…
What Can We Estimate from Fatality and Infectious Case Data using the Susceptible-Infected-Removed (SIR) model? A case Study of Covid-19 Pandemic
Semra Ahmetolan, Ayse Humeyra Bilge, Ali Demirci +2
The rapidly spreading Covid-19 that affected almost all countries, was first reported at the end of 2019. As a consequence of its highly infectious nature, countries all over the w…
Unexpected parameter ranges of the 2009 A(H1N1) epidemic for Istanbul and the Netherlands
Ali Demirci, Ayse Peker Dobie, Ayse Humeyra Bilge +1
The data of the 2009 A(H1N1) epidemic in Istanbul, Turkey is unique in terms of the collected data, which include not only the hospitalization but also the fatality information rec…
On the time shift phenomena in epidemic models
Ayse Peker Dobie, Ali Demirci, Ayse Humeyra Bilge +1
In the standard Susceptible-Infected-Removed (SIR) and Susceptible-Exposed-Infected-Removed (SEIR) models, the peak of infected individuals coincides with the in ection point of re…
Dispersive shock waves in Three Dimensional Benjamin-Ono equation
Ali Demirci
Dispersive shock waves (DSWs) in the three dimensional Benjamin- Ono (3DBO) equation is studied with step-like initial condition along a paraboloid front. By using a similarity red…
Nonlinear Opinion Dynamics in Systems with Leadership Effect
F. Ataş, A. Demirci, C. Özemir
Opinion dynamics of a group of individuals is the change in the members' opinions through mutual interaction with each other. The related literature contains works in which the dyn…
Dispersive shock waves in the Kadomtsev-Petviashvili and Two Dimensional Benjamin-Ono equations
Mark J. Ablowitz, Ali Demirci, Yi-Ping Ma
Dispersive shock waves (DSWs) in the Kadomtsev-Petviashvili (KP) equation and two dimensional Benjamin-Ono (2DBO) equation are considered using parabolic front initial data. Employ…