ORIGINAL_ARTICLE
SENSITIVITY ANALYSIS IN LINEAR-PLUS-LINEAR FRACTIONAL PROGRAMMING PROBLEMS
In this paper, we study the classical sensitivity analysis when the right - hand – side vector, and the coefficients of the objective function are allowed to vary.
http://ijo.iaurasht.ac.ir/article_513234_4fbf40f8d8b6a9ee9f70b218f9422080.pdf
2009-04-01T11:23:20
2019-04-20T11:23:20
1
12
Sensitivity analysis
Linear fractional programming
B
Kheirfam
true
1
Department of Mathematics Azarbaijan University of Tarbiat Moallem
Department of Mathematics Azarbaijan University of Tarbiat Moallem
Department of Mathematics Azarbaijan University of Tarbiat Moallem
LEAD_AUTHOR
ORIGINAL_ARTICLE
VARIATIONAL ITERATION METHOD FOR FREDHOLM INTEGRAL EQUATIONS OF THE SECOND KIND
In this paper, He‘s variational iteration method is applied to Fredholm integral equations of the second kind. To illustrate the ability and simplicity of the method, some examples are provided. The results reveal that the proposed method is very effective and simple and for first fourth examples leads to the exact solution.
http://ijo.iaurasht.ac.ir/article_513235_14a9e303586f0f535073676a64a9d2a0.pdf
2009-04-01T11:23:20
2019-04-20T11:23:20
13
23
variational iteration method
FREDHOLM INTEGRAL EQUATION
Lagrange multiplier
RESTRICTED VARIATION
J.
Biazar
jafai.biazar@gmail.com
true
1
Department of Mathematics, Faculty of Science, University of Guilan
Department of Mathematics, Faculty of Science, University of Guilan
Department of Mathematics, Faculty of Science, University of Guilan
LEAD_AUTHOR
H.
Ebrahimi
true
2
Department of Mathematics, Islamic Azad University, Rasht branch
Department of Mathematics, Islamic Azad University, Rasht branch
Department of Mathematics, Islamic Azad University, Rasht branch
AUTHOR
ORIGINAL_ARTICLE
A NONLINEAR MATHEMATICAL MODEL FOR ASTHMA: EFFECT OF ENVIRONMENTAL POLLUTION
In this paper, we explore a nonlinear mathematical model to study the spread of asthma due to inhaled pollutants from industry as well as tobacco smoke from smokers in a variable size population. The model is analyzed using stability theory of differential equations and computer simulation. It is shown that with an increase in the level of air pollutants concentration, the asthmatic (diseased) population increases. It is also shown that along with pollutants present in the environment, smoking (active or passive) also helps in the spread of asthma. Moreover, with the increase in the rate of interaction between susceptibles and smokers, the persistence of the spread of asthma is higher. A numerical study of the model is also performed to see the role of certain key parameters on the spread of asthma and to support the analytical results.
http://ijo.iaurasht.ac.ir/article_513236_1ef862b2da26d7558e75ea1b64c1c2e1.pdf
2009-04-01T11:23:20
2019-04-20T11:23:20
24
56
Pollutants
SMOKERS
Asthma
Stability
LIAPUNOV FUNCTION
Computer Simulation
NARESHA
RAM
true
1
Department of Mathematics, Harcourt Butler Technological Institute
Kanpur -208002, India
Department of Mathematics, Harcourt Butler Technological Institute
Kanpur -208002, India
Department of Mathematics, Harcourt Butler Technological Institute
Kanpur -208002, India
LEAD_AUTHOR
Agraj
Tripathi
true
2
Department of Mathematics, Bhabha Institute of Technology Aonha, Kanpur-209 204, India
Department of Mathematics, Bhabha Institute of Technology Aonha, Kanpur-209 204, India
Department of Mathematics, Bhabha Institute of Technology Aonha, Kanpur-209 204, India
AUTHOR