2020-03-31T14:30:59Z http://ijm2c.iauctb.ac.ir/?_action=export&rf=summon&issue=112359
2016-03-20
International Journal of Mathematical Modelling & Computations 2228-6225 2228-6225 2012 2 2 (SPRING) COUPLED FIXED POINT THEOREMS FOR GENERALIZED Φ-MAPPINGS SATISFYING CONTRACTIVE CONDITION OF INTEGRAL TYPE ON CONE METRIC SPACES J. O. Olaleru G. A. Okeke H. Akewe 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.   generalized φ-pair mappings coupled fixed point complete cone metric spaces 2016 03 20 87 98 http://ijm2c.iauctb.ac.ir/article_521789_a55653aa292e1d619c84f9120bba5838.pdf
2016-03-20
International Journal of Mathematical Modelling & Computations 2228-6225 2228-6225 2012 2 2 (SPRING) PRODUCTION INVENTORY MODEL FOR DETERIORATING ITEMS WITH SHORTAGES AND SALVAGE VALUE UNDER REVERSE LOGISTICS V. Kumar Mishra 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.   Inventory deteriorating items shortages time dependent deterioration salvage 2016 03 20 99 110 http://ijm2c.iauctb.ac.ir/article_521790_fabc1f3726258cb97d1a1574604e67f4.pdf
2016-03-20
International Journal of Mathematical Modelling & Computations 2228-6225 2228-6225 2012 2 2 (SPRING) COMPUTATIONAL RESULTS ON FINITE P-GROUPS OF EXPONENT P2 B. Ahmadi H. Doostie 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>.   Fibonacci length \$p\$-groups Nilpotency class3 2016 03 20 111 120 http://ijm2c.iauctb.ac.ir/article_521791_db64c9588025d6bf52325f4fee0eca98.pdf
2016-03-20
International Journal of Mathematical Modelling & Computations 2228-6225 2228-6225 2012 2 2 (SPRING) STUDYING THE BEHAVIOR OF SOLUTIONS OF A SECOND-ORDER RATIONAL DIFFERENCE EQUATION AND A RATIONAL SYSTEM S. Sohrabi Hesan Y. Gholizade Atani M. Hesan 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.   Dierence equation Rational system Boundedness character Nonnegative 2016 03 20 121 125 http://ijm2c.iauctb.ac.ir/article_521792_db5486a0859997153cc3246cea521860.pdf
2016-03-20
International Journal of Mathematical Modelling & Computations 2228-6225 2228-6225 2012 2 2 (SPRING) NUMERICAL SOLUTION OF INTEGRO-DIFFERENTIAL EQUATION BY USING CHEBYSHEV WAVELET OPERATIONAL MATRIX OF INTEGRATION M. A. Fariborzi Araghi S. Daliri M. Bahmanpour 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.   Integro-differential equation Chebyshev wavelet of the first kind Operational matrix of integration Legendre wavelet CAS wavelet 2016 03 20 127 136 http://ijm2c.iauctb.ac.ir/article_521793_7799387e0d249474234088de14827401.pdf
2016-03-20
International Journal of Mathematical Modelling & Computations 2228-6225 2228-6225 2012 2 2 (SPRING) APPLICATIONS OF PARTIAL DIFFERENTIAL EQUATIONS IN STABILITY INDEX AND CRITICAL LENGTH IN AVALANCHE DYNAMICS S. Ahmadi 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.   stability index Shear strength avalanche dynamics 2016 03 20 137 144 http://ijm2c.iauctb.ac.ir/article_521794_361e0fbe08ae81a1a4f9337c3d4d27ee.pdf
2016-03-20
International Journal of Mathematical Modelling & Computations 2228-6225 2228-6225 2012 2 2 (SPRING) AN OPTIMIZATION METHOD TO DETERMINE THE LEAST COMMON MULTIPLY M. Zangane G. Tohidi 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.   2016 03 20 145 149 http://ijm2c.iauctb.ac.ir/article_521795_0dbd28e04fc9c1ed251a101b1f8f18b3.pdf
2016-03-20