SENSITIVITY ANALYSIS IN LINEAR-PLUS-LINEAR FRACTIONAL PROGRAMMING PROBLEMS
B
Kheirfam
Department of Mathematics Azarbaijan University of Tarbiat Moallem
author
text
article
2009
eng
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.
Iranian Journal of Optimization
Islamic Azad University, Rasht Branch
2008-5427
01
v.
1
no.
2009
1
12
http://ijo.iaurasht.ac.ir/article_513234_4fbf40f8d8b6a9ee9f70b218f9422080.pdf
VARIATIONAL ITERATION METHOD FOR FREDHOLM INTEGRAL EQUATIONS OF THE SECOND KIND
J.
Biazar
Department of Mathematics, Faculty of Science, University of Guilan
author
H.
Ebrahimi
Department of Mathematics, Islamic Azad University, Rasht branch
author
text
article
2009
eng
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.
Iranian Journal of Optimization
Islamic Azad University, Rasht Branch
2008-5427
01
v.
1
no.
2009
13
23
http://ijo.iaurasht.ac.ir/article_513235_14a9e303586f0f535073676a64a9d2a0.pdf
A NONLINEAR MATHEMATICAL MODEL FOR ASTHMA: EFFECT OF ENVIRONMENTAL POLLUTION
NARESHA
RAM
Department of Mathematics, Harcourt Butler Technological Institute
Kanpur -208002, India
author
Agraj
Tripathi
Department of Mathematics, Bhabha Institute of Technology Aonha, Kanpur-209 204, India
author
text
article
2009
eng
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.
Iranian Journal of Optimization
Islamic Azad University, Rasht Branch
2008-5427
01
v.
1
no.
2009
24
56
http://ijo.iaurasht.ac.ir/article_513236_1ef862b2da26d7558e75ea1b64c1c2e1.pdf