36 citations · 54 across the 10 of their papers we have counts for
5 papers · 1 filter
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…