Islamic Azad University, Central Tehran Branch International Journal of Mathematical Modelling & Computations 2228-6225 2 2 (SPRING) 2016 03 20 COUPLED FIXED POINT THEOREMS FOR GENERALIZED Φ-MAPPINGS SATISFYING CONTRACTIVE CONDITION OF INTEGRAL TYPE ON CONE METRIC SPACES 87 98 521789 EN J. O. Olaleru University of Lagos, Lagos, Nigeria. Nigeria Mathematics Department G. A. Okeke University of Lagos, Lagos, Nigeria. Nigeria Mathematics Department H. Akewe University of Lagos, Lagos, Nigeria. Nigeria Mathematics Department Journal Article 2016 04 14 In this paper, we unify, extend and generalize some results on coupled fixed point theorems of generalized φ- mappings with some applications to fixed points of integral type mappings in cone metric spaces.
Islamic Azad University, Central Tehran Branch International Journal of Mathematical Modelling & Computations 2228-6225 2 2 (SPRING) 2016 03 20 PRODUCTION INVENTORY MODEL FOR DETERIORATING ITEMS WITH SHORTAGES AND SALVAGE VALUE UNDER REVERSE LOGISTICS 99 110 521790 EN V. Kumar Mishra B T kumaon Institute of Technology,Dwarahat, Almora,Uttarakhand, India India Computer Science, Assistant Professor Journal Article 2016 04 14 In this paper, a production inventory model is developed for the business enterprise which consists of three wings. The first wing is for manufacturing new items, the second wing is for collecting the returned items, while third wing is for remanufacturing the returned item. In this model we consider the fact that the storage item is deteriorated during storage periods and salvage value is incorporated to the deteriorated items. The demand, deterioration, production, remanufacturing and return rates are time dependent. The shortages are allowed and fully backlogged. The model is solved analytically by minimizing the total inventory cost. The model can be applied for optimizing the total inventory cost of deteriorating items inventory under reverse logistic for a business enterprise where demand and deterioration both is function of time.
Islamic Azad University, Central Tehran Branch International Journal of Mathematical Modelling & Computations 2228-6225 2 2 (SPRING) 2016 03 20 COMPUTATIONAL RESULTS ON FINITE P-GROUPS OF EXPONENT P2 111 120 521791 EN B. Ahmadi Mathematics Department, Science and Research Branch, Islamic Azad University, Tehran, Iran. Iran, Islamic Republic of Professor of Mathematics, H. Doostie Lecturer, Lahijan Islamic Azad University, Lahijan, Iran Iran, Islamic Republic of Lecturere, Ph.D. Student (at present). Journal Article 2016 04 14 The Fibonacci lengths of the finite <em>p</em>-groups have been studied by R. Dikici and co-authors since 1992. All of the considered groups are of exponent <em>p</em>, and the lengths depend on the celebrated Wall number <em>k(p)</em>. The study of <em>p</em>-groups of nilpotency class 3 and exponent <em>p</em> has been done in 2004 by R. Dikici as well. In this paper we study all of the <em>p</em>-groups of nilpotency class 3 and exponent <em>p<sup>2</sup></em>. This completes the study of Fibonacci length of all \$p\$-groups of order <em>p<sup>4</sup></em>, proving that the Fibonacci length is <em>k(p<sup>2</sup>)</em>.
Islamic Azad University, Central Tehran Branch International Journal of Mathematical Modelling & Computations 2228-6225 2 2 (SPRING) 2016 03 20 STUDYING THE BEHAVIOR OF SOLUTIONS OF A SECOND-ORDER RATIONAL DIFFERENCE EQUATION AND A RATIONAL SYSTEM 121 125 521792 EN S. Sohrabi Hesan University Of Tabriz,Tabriz Iran, Islamic Republic of Faculty of Mathematical Science Y. Gholizade Atani M. Hesan Journal Article 2016 04 14 In this paper we investigate the behavior of solutions, stable and unstable of the solutions a second-order rational difference equation. Also we will discuss about the behavior of solutions a the rational system, we show these solutions may be stable or unstable.
Islamic Azad University, Central Tehran Branch International Journal of Mathematical Modelling & Computations 2228-6225 2 2 (SPRING) 2016 03 20 NUMERICAL SOLUTION OF INTEGRO-DIFFERENTIAL EQUATION BY USING CHEBYSHEV WAVELET OPERATIONAL MATRIX OF INTEGRATION 127 136 521793 EN M. A. Fariborzi Araghi Islamic Azad University, Central Tehran Branch, Iran Iran, Islamic Republic of Department of Mathematics S. Daliri Iran, Islamic Republic of M. Bahmanpour Department of Mathematics, Sama Technical and Vocational Training College, Islamic, Azad University, Khorasgan, Isfahan Branch, Iran. Iran, Islamic Republic of Journal Article 2016 04 14 In this paper, we propose a method to approximate the solution of a linear Fredholm integro-differential equation by using the Chebyshev wavelet of the first kind as basis. For this purpose, we introduce the first Chebyshev operational matrix of integration. Chebyshev wavelet approximating method is then utilized to reduce the integro-differential equation to a system of algebraic equations. Illustrative examples are included to demonstrate the advantages and applicability of the technique.
Islamic Azad University, Central Tehran Branch International Journal of Mathematical Modelling & Computations 2228-6225 2 2 (SPRING) 2016 03 20 APPLICATIONS OF PARTIAL DIFFERENTIAL EQUATIONS IN STABILITY INDEX AND CRITICAL LENGTH IN AVALANCHE DYNAMICS 137 144 521794 EN S. Ahmadi Tehran north branch-Azad University-iran Iran, Islamic Republic of I&#039;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 &quot;Tornado Dynamics&quot; in the journal of karaj Azad university. Journal Article 2016 04 14 In this study, Stability analysis of snow slab which is under detonation has developed in the present model. The model has been studied by using the basic concepts of non-detonation model and concepts of underwater explosions with appropriate modifications to the present studies. The studies have also been extended to account the effect of critical length variations at the time of detonation and its effects on various material parameters through the concepts of fracture mechanics. The results indicate that the stability and critical length values are lower for the detonation (present) values in comparison with the non-detonated values. The importance of the studies in Avalanche forecasting has been highlighted.
Islamic Azad University, Central Tehran Branch International Journal of Mathematical Modelling & Computations 2228-6225 2 2 (SPRING) 2016 03 20 AN OPTIMIZATION METHOD TO DETERMINE THE LEAST COMMON MULTIPLY 145 149 521795 EN M. Zangane Iran, Islamic Republic of G. Tohidi Iran, Islamic Republic of Journal Article 2016 04 14 This paper proposes an Integer Programming model to obtain the Least Common Multiply (LCM) for some integer numbers. The proposed method is illustrated by a numerical example.