Effects of ionic parameters on behavior of a skeletal muscle fiber model
Samaneh
Shahi
Faculty of Mathematical Sciences, University of Tabriz, Tabriz, Iran
author
Hossein
Kheiri
Faculty of Mathematical Sciences, University of Tabriz, Tabriz, Iran
author
text
article
2017
eng
All living cells have a membrane which separates inside the cell from it's outside. There is a potential difference between inside and outside of the cell. This potential difference will change during an action potential. It is quite common to peruse action potentials of skeletal muscle fibers with the Hodgkin-Huxley model. Since Hodgkin and Huxley summarized some controlling currents like inward rectifier current or chloride current as a leak current when we try to study the sensitivity of model to some parameters we lose some details. In this paper we use a model which contains sodium, potassium, chloride, Na-K pump, and inward rectifier currents. Firstly, we find critical point of the system, and discuss on how action potential changes for different initial values of variables. Then we study sensitivity of the critical point and maximum of potential to different parameters.
Journal of Mathematical Modeling
University of Guilan
2345-394X
5
v.
2
no.
2017
77
88
http://jmm.guilan.ac.ir/article_2343_1731f1b7f451e3db89d4f150c13bdc9d.pdf
Numerical solution of non-planar Burgers equation by Haar wavelet method
Sumana
Shesha
Bangalore University
author
Achala L.
Nargund
Department of Studies in Mathematics, Karnatak University, Dharwad, India
author
Nagendrappa M.
Bujurke
Department of Studies in Mathematics, Karnatak University, Dharwad, India
author
text
article
2017
eng
In this paper, an efficient numerical scheme based on uniform Haar wavelets is used to solve the non-planar Burgers equation. The quasilinearization technique is used to conveniently handle the nonlinear terms in the non-planar Burgers equation. The basic idea of Haar wavelet collocation method is to convert the partial differential equation into a system of algebraic equations that involves a finite number of variables. The solution obtained by Haar wavelet collocation method is compared with that obtained by finite difference method and are found to be in good agreement. Shock waves are found to be formed due to nonlinearity and dissipation. We have analyzed the effects of non-planar and nonlinear geometry on shock existence. We observe that non-planar shock structures are different from planar ones. It is of interest to find that Haar wavelets enable to predict the shock structure accurately.
Journal of Mathematical Modeling
University of Guilan
2345-394X
5
v.
2
no.
2017
89
118
http://jmm.guilan.ac.ir/article_2460_de6a3c4204cdd70ae58a47355b658fa6.pdf
Hopf bifurcation analysis of a diffusive predator-prey model with Monod-Haldane response
Sambath
Muniyagounder
Department of Mathematics, Periyar University, Salem-636011, India
author
Ramajayam
Sahadevan
Ramanujan Institute for Advanced Study in Mathematics, University of Madras, hennai-600005, India
author
text
article
2017
eng
In this paper, we have studied the diffusive predator-prey model with Monod-Haldane functional response. The stability of the positive equilibrium and the existence of Hopf bifurcation are investigated by analyzing the distribution of eigenvalues without diffusion. We also study the spatially homogeneous and non-homogeneous periodic solutions through all parameters of the system which are spatially homogeneous. In order to verify our theoretical results, some numerical simulations are also presented.
Journal of Mathematical Modeling
University of Guilan
2345-394X
5
v.
2
no.
2017
119
136
http://jmm.guilan.ac.ir/article_2482_0f775ecfc0197e23541d4f5fbcaa278c.pdf
A mathematical model for treatment of bovine brucellosis in cattle population
Julius
Tumwiine
Department of Mathematics, Mbarara University of Science and Technology, P.O. Box 1410 Mbarara, Uganda
author
Godwin
Robert
Department of Mathematics, Mbarara University of Science and Technology,
P.O. Box 1410 Mbarara, Uganda
author
text
article
2017
eng
Brucellosis is an infectious bacterial zoonosis of public health and economic significance. In this paper, a mathematical model describing the propagation of bovine brucellosis within cattle population is formulated. Model analysis is carried out to obtain and establish the stability of the equilibrium points. A threshold parameter referred to as the basic reproduction number $\mathcal{R}_{0}$ is calculated and the conditions under which bovine brucellosis can be cleared in the cattle population are established. It is found out that when $\mathcal{R}_{0}<1,$ the disease can be eliminated in the cattle population or persists when $\mathcal{R}_{0}>1$. Using Lyapunov function and Poincair\'{e}-Bendixson theory, we prove that the disease-free and endemic equilibrium, respectively are globally asymptotic stable. Numerical simulation reveals that control measures should aim at reducing the magnitude of the parameters for contact rate of infectious cattle with the susceptible and recovered cattle, and increasing treatment rate of infected cattle.
Journal of Mathematical Modeling
University of Guilan
2345-394X
5
v.
2
no.
2017
137
152
http://jmm.guilan.ac.ir/article_2523_c01bbe2d4b27e2285b641b5ef7880983.pdf
Existence and continuous dependence for fractional neutral functional differential equations
Mohammed
Abdo
Department of Mathematics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, India
author
Satish
Panchal
Department of Mathematics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, 431004 India
author
text
article
2017
eng
In this paper, we investigate the existence, uniqueness and continuous dependence of solutions of fractional neutral functional differential equations with infinite delay and the Caputo fractional derivative order, by means of the Banach's contraction principle and the Schauder's fixed point theorem.
Journal of Mathematical Modeling
University of Guilan
2345-394X
5
v.
2
no.
2017
153
170
http://jmm.guilan.ac.ir/article_2535_56ca6929d8a86326b7a2970116eeeb03.pdf
An interior-point algorithm for $P_{\ast}(\kappa)$-linear complementarity problem based on a new trigonometric kernel function
Sajad
Fathi-Hafshejani
Department of Mathematics, Shiraz University of Technology, Shiraz, Iran
author
Hossein
Mansouri
Department of Applied Mathematics, Shahrekord University, Shahrekord, Iran
author
Mohammad Reza
Peyghami
Faculty of Mathematics, K.N. Toosi Univ. of Tech., Tehran, Iran
author
text
article
2017
eng
In this paper, an interior-point algorithm for $P_{\ast}(\kappa)$-Linear Complementarity Problem (LCP) based on a new parametric trigonometric kernel function is proposed. By applying strictly feasible starting point condition and using some simple analysis tools, we prove that our algorithm has $O((1+2\kappa)\sqrt{n} \log n\log\frac{n}{\epsilon})$ iteration bound for large-update methods, which coincides with the best known complexity bound. Moreover, numerical results confirm that our new proposed kernel function is doing well in practice in comparison with some existing kernel functions in the literature.
Journal of Mathematical Modeling
University of Guilan
2345-394X
5
v.
2
no.
2017
171
197
http://jmm.guilan.ac.ir/article_2537_cf3ea063a8ab351a654ae8a859b24f8d.pdf