Islamic Azad University, Central tehran BranchInternational Journal of Mathematical Modelling & Computations2228-622513 (SUMMER)20110622THE ROLE OF TREATMENT ON CONTROLLING CHANCROID PREVALENCE159170521706ENS.MushayabasaModelling Biomedical Systems Research Group, National University of Science and Technology, Box AC 939 Ascot, Bulawayo
Zimbabwe
Department of Applied MathematicsC. P.BhunuUniversity of Zimbabwe, Box MP 167 Mount Pleasant, Harare
Zimbabwe
Department of Applied MathematicsJournal Article20160413Chancroid is a highly infectious and curable sexually transmitted disease caused by the bacterium Haemophilus Ducreyl (also known as H. Ducreyl). A deterministic mathematical model for investigating the role of treatment on controlling chancroid epidemic is formulated and rigorously analyzed. A threshold quantity known as the productive number, which measures the number of secondary infections produced by a single chancroid infective when introduced in a population of susceptible in the presence of treatment has been derived. Equilibria for the model are determined and their stability are examined. Latin hypercube sampling has been used to perform the sensitivity analysis of the reproductive number.Islamic Azad University, Central tehran BranchInternational Journal of Mathematical Modelling & Computations2228-622513 (SUMMER)20110622ON AN EXTENSION OF A QUADRATIC TRANSFORMATION FORMULA DUE TO GAUSS171174521707ENM. A.RakhaFaculty of Science - Suez Canal University - Ismailia
Egypt
Department of Mathematics and StatisticsA. K.RathieRajasthan Technical University, Village: TULSI, Post-Jakhmund, Dist. BUNDI-323021, Rajasthan State
India
Vedant College of Engineering and TechnologyP.ChopraMarudhar Engineering College, NH-11, Jaipur Road, Raisar, BIKANER-334 001, Rajasthan State
India
Department of MathematicsJournal Article20160413The aim of this research note is to prove the following new transformation formula
begin{equation*} (1-x)^{-2a},_{3}F_{2}left[begin{array}{ccccc} a, & a+frac{1}{2}, & d+1 & & \ & & & ; & -frac{4x}{(1-x)^{2}} \ & c+1, & d & & end{array}right] \ =,_{4}F_{3}left[begin{array}{cccccc} 2a, & 2a-c, & a-A+1, & a+A+1 & & \ & & & & ; & -x \ & c+1, & a-A, & a+A & & end{array} right], end{equation*}
where $A^2=a^2-2ad+cd$ after the equation.
For d=c, we get a known quadratic transformations due to Gauss. The result is derived with the help of the generalized Gauss's summation theorem available in the literature.Islamic Azad University, Central tehran BranchInternational Journal of Mathematical Modelling & Computations2228-622513 (SUMMER)20110622INTERPOLATION BY HYPERBOLIC B-SPLINE FUNCTIONS175181521708ENM.AmirfakhrianIslamic Azad University, Central Tehran Branch
Iran, Islamic Republic of
Department of MathematicsH.NourianiIslamic Azad University, Central Tehran Branch
Iran, Islamic Republic of
Department of MathematicsJournal Article20160413In this paper we present a new kind of B-splines, called hyperbolic B-splines generated over the space spanned by hyperbolic functions and we use it to interpolate an arbitrary function on a set of points. Numerical tests for illustrating hyperbolic B-spline are presented.Islamic Azad University, Central tehran BranchInternational Journal of Mathematical Modelling & Computations2228-622513 (SUMMER)20110622VARIATIONAL HOMOTOPY PERTURBATION METHOD FOR SOLVING THE NONLINEAR GAS DYNAMICS EQUATION183187521709ENM.MatinfarFaculty of Sciences, Mazandaran University, Iran
Department of MathematicsZ.RaeisiFaculty of Sciences, Mazandaran University, Iran
Iran, Islamic Republic of
Department of MathematicsJournal Article20160413A. Noor et al. [7] analyze a technique by combining the variational iteration method and the homotopy perturbation method which is called the variational homotopy perturbation method (VHPM) for solving higher dimensional initial boundary value problems. In this paper, we consider the VHPM to obtain exact solution to Gas Dynamics equation.Islamic Azad University, Central tehran BranchInternational Journal of Mathematical Modelling & Computations2228-622513 (SUMMER)20110622APPLICATION OF PARTIAL DIFFERENTIAL EQUATIONS IN SNOW MECHANICS189194521710ENS.AhmadiTehran north branch-Azad University-iran
Iran, Islamic Republic of
I'm an Assistant Professor of Applied Mathematics at the University of Azad university. I received my doctorate in Fluid mechanics fro pune University. My recent publication include "Tornado Dynamics" in the journal of karaj Azad university.Journal Article20160413In the present work, failure of a snow slab is analyzed by accounting Normal mode criteria. The analysis has been extended to include residual stress into the model (in addition to body forces). Intensity of crack energy release rate, and displacement components have been derived and their values have been estimated. The obtained results have been compared with the existing snow slab failure models [ Perla and La chappelle (1970), Perla (1980), Sigrist (2006), Schweizer (1999)]. The criteria of snow slab failure have been critically examined.The maximum stress in the snow pack and critical intensity factor of crack development has also been studied in the model. The results of the present model can be used for the avalanche release information.
Islamic Azad University, Central tehran BranchInternational Journal of Mathematical Modelling & Computations2228-622513 (SUMMER)20110622UNBOUNDEDNESS IN MOILP AND ITS EFFICIENT SOLUTIONS195198521711ENG.TohidiIslamic Azad University, Central Tehran Branch, Iran
Iran, Islamic Republic of
Department of MathematicsS.RazavyanIslamic Azad University, Central Tehran Branch, Iran
Iran, Islamic Republic of
Department of MathematicsJournal Article20160413In this paper we investigate Multi-Objective Integer Linear Programming (MOILP) problems with unbounded feasible region and introduce recession direction for MOILP problems. Then we present necessary and suﬃcient conditions to have unbounded feasible region and inﬁnite optimal values for objective functions of MOILP problems. Finally we present some examples with unbounded feasible region and ﬁnite and inﬁnite eﬃcient solution.
Islamic Azad University, Central tehran BranchInternational Journal of Mathematical Modelling & Computations2228-622513 (SUMMER)20110622MINIMAL SOLUTION OF INCONSISTENT FUZZY MATRIX EQUATIONS199210521712ENM.MoslehFiroozkooh Branch, Islamic Azad University, Firoozkooh
Iran, Islamic Republic of
Department of MathematicsM. S.OtadiFiroozkooh Branch, Islamic Azad University, Firoozkooh
Iran, Islamic Republic of
Department of MathematicsS. M.Bagher AbadiFiroozkooh Branch, Islamic Azad University, Firoozkooh
Iran, Islamic Republic of
Department of MathematicsJournal Article20160413Fuzzy liner systems of equations, play a major role in several applications in various area such as engineering, physics and economics. In this paper, we investigate the existence of a minimal solution of inconsistent fuzzy matrix equation. Also some numerical examples are considered.
Islamic Azad University, Central tehran BranchInternational Journal of Mathematical Modelling & Computations2228-622513 (SUMMER)20110622IMPRECISE DATA ENVELOPMENT ANALYSIS APPROACH IN PERFORMANCE EVALUATION OF SUPPLY CHAIN211216521713ENS.Mamizadeh ChatghayehIslamic azad university, Central Tehran branch, Tehran, Iran
Young researches clubV.AbbasiUniversity of Science and Culture, Tehran
Iran, Islamic Republic of
Department of Industrial EngineeringJournal Article20160413Spurred by intensifying competition in global markets, most companies have been increasingly implementing supply chain management (SCM) and information systems (IS) practices. As well, globalization policies have created a more intensive competition amongst manufacturers; in additional the priority of supply over demand, market competition and importance of some factor such as quality, accountability has encouraged companies to integrate their activities using SCM. Performance measurement of supply chain management reflects the need for improvement in operational areas which are found wanton in performance measures. In addition to the results obtained from the evaluation of supply chain performance based on inner changed data can help the integration of supply chain activities and their inner changed data through improving the chain relations and it satisfies customers. In addition, Supply chain (SC) performance evaluation problems cover a wide range from evaluating the performance of independent organizations among supply chains to evaluating the performance of a whole supply chain system. Therefore, in this paper, as regards, performance evaluation is of great importance for effective supply chain management, it has been tried to evaluate supply chain performance by both exact and interval data. This model is illustrated by a numerical example.