http://cirworld.com/index.php/jam/issue/feed JOURNAL OF ADVANCES IN MATHEMATICS 2018-06-14T06:02:04+00:00 Prof. Kewen Zhao jam@cirworld.com Open Journal Systems Interested in submitting to this journal? We recommend that you review the About the Journal page for the journal's section policies, as well as the Author Guidelines. Authors need to register with the journal prior to submitting or, if already registered, can simply log in and begin the five-step process. http://cirworld.com/index.php/jam/article/view/7415 Further Acceleration of the Simpson method for solving nonlinear equations 2018-06-13T06:20:05+00:00 Rajinder Thukral rthukral@hotmail.co.uk <p>There are two aims of this paper, firstly, we present an improvement of the classical Simpson third-order method for finding zeros a nonlinear equation and secondly, we introduce a new formula for approximating second-order derivative. The new Simpson-type method is shown to converge of the order four.&nbsp; Per iteration the new method requires same amount of evaluations of the function and therefore the new method has an efficiency index better than the classical Simpson method.&nbsp; We examine the effectiveness of the new fourth-order Simpson-type method by approximating the simple root of a given nonlinear equation. Numerical comparisons is made with classical Simpson method to show the performance of the presented method.</p> 2018-05-25T00:00:00+00:00 ##submission.copyrightStatement## http://cirworld.com/index.php/jam/article/view/7402 The Trisection of an Arbitrary Angle 2018-06-12T06:17:51+00:00 Arthur Clair Rediske art1rediske@gmail.com <p>This paper presents an elegant classical geometric solution to the ancient Greek's problem of angle trisection.&nbsp; Its primary objective is to provide a provable construction for resolving the trisection of an arbitrary angle, based on the restrictions governing the problem.&nbsp; The angle trisection problem is believed to be unsolvable for compass-straightedge construction.&nbsp; As stated by Pierre Laurent Wantzel (1837), the solution of the angle trisection problem corresponds to an implicit solution of the cubic equation x cubed minus 3x minus 1 equals 0, which is algebraically irreducible, and so is the geometric solution of the angle trisection problem.&nbsp; The goal of the presented solution is to show the possibility to solve the trisection of an arbitrary angle using the traditional Greek's tools of geometry (a classical compass and straightedge) by changing&nbsp; the problem from the algebraic impossibility classification to a solvable plane geometrical problem.&nbsp; Fundamentally, this novel work is based on the fact that algebraic irrationality is not a geometrical impossibility.&nbsp; The exposed methods of proof have been reduced to the Euclidean postulates of classical geometry.</p> 2018-05-30T05:08:11+00:00 ##submission.copyrightStatement## http://cirworld.com/index.php/jam/article/view/7401 The Neutrosophic soft modules 2018-06-14T06:02:04+00:00 Kemale Veliyeva kemale2607@mail.ru <p>Molodtsov initiated the concept of soft sets in [17]. Maji et al. defined some operations on soft sets in [13]. Aktaş et al. generalized soft sets by defining the concept of soft groups in [2]. After then, Qiu-Mei Sun et al. gave soft modules in [20]. In this paper, the concept of neutrosophic soft module is introduced and some of its basic properties are studied.</p> 2018-05-30T00:00:00+00:00 ##submission.copyrightStatement## http://cirworld.com/index.php/jam/article/view/7383 The Role of conservation laws in the development of nonequilibrium and emergence of turbulence. Peculiarities of calculating nonequilibrium flows 2018-06-02T04:59:45+00:00 Ludmila Ivanovna Petrova ptr@cs.msu.su <p>It turns out that the equations of mathematical physics, which consist equations of the conservation laws for energy, linear momentum, angular momentum, and mass, possess additional, hidden, properties that enables one to describe not only a variation of physical quantities (such as energy, pressure, density) but also processes such as origination of waves, vortices, turbulent pulsations and other ones. It is caused by the conservation laws properties.</p> <p>In present paper the development of nonequilibrium in gasdynamic systems, which are described by the Euler and Navier-Stokes equations, will be investigated.&nbsp;</p> <p>Under studying the consistence of conservation laws equations, from the Euler and Navier-Stokes equations it can be obtained the evolutionary relation for entropy (as a state functional).&nbsp; The evolutionary relation possesses a certain peculiarity, namely, it turns out to be nonidentical. This fact points out to inconsistence of the conservation law equations and noncommutativity of conservation laws.</p> <p>Such a nonidentical relation discloses peculiarities of the solutions to the Navier-Stokes equations due to which the Euler and Navier-Stokes equations can describe the processes the development of nonequilibrium and emergence of vortices and turbulence.</p> <p>It has been shown that such processes can be described only with the help of two nonequivalent coordinate systems or by simultaneous using numerical and analytical methods.</p> 2018-05-30T00:00:00+00:00 ##submission.copyrightStatement## http://cirworld.com/index.php/jam/article/view/7417 A Solutıon Algorıthm for Interval Transportatıon Problems vıa Tıme-Cost Tradeoff 2018-06-12T06:38:31+00:00 Inci Albayrak ibayrak@yildiz.edu.tr Mustafa Sİvri msivri@yildiz.edu.tr Gizem Temelcan temelcan.gizem@gmail.com <p>In this paper, an algorithm for solving interval time-cost tradeoff transportation problemsis presented. In this problem, all the demands are defined as intervalto determine more realistic duration and cost. Mathematical methods can be used to convert the time-cost tradeoff problems to linear programming, integer programming, dynamic programming, goal programming or multi-objective linear programming problems for determining the optimum duration and cost. Using this approach, the algorithm is developed converting interval time-cost tradeoff transportation problem to the linear programming problem by taking into consideration of decision maker (DM).</p> 2018-06-12T06:38:30+00:00 ##submission.copyrightStatement## http://cirworld.com/index.php/jam/article/view/7373 Generalized Rayleigh-quotient formulas for the real parts, imaginary parts, and moduli of the eigenvalues of diagonalizable matrices 2018-06-13T06:00:16+00:00 Ludwig Kohaupt kohaupt@beuth-hochschule.de <p>In the present paper, generalized Rayleigh-quotient formulas for the real parts, imaginary parts,&nbsp;and moduli of the eigenvalues of diagonalizable matrices are derived. These formulas are new and&nbsp;correspond to similar formulas for the eigenvalues of self-adjoint matrices obtained recently. Numerical&nbsp;examples underpin the theoretical findings</p> 2018-06-13T05:51:42+00:00 ##submission.copyrightStatement## http://cirworld.com/index.php/jam/article/view/7365 Multi-Source Backlogged Probabilistic Inventory Model for Crisp and Fuzzy Environment 2018-06-13T08:20:44+00:00 Osama Mahmoud Hollah eng_hollah@yahoo.com <p>This paper proposed a multi-item multi-source probabilistic periodic review inventory model under a varying holding cost constraint with zero lead time when: (1) the stock level decreases at a uniform rate over the cycle. (2) some costs are varying. (3) the demand is a random variable that follows some continuous distributions as (two-parameter exponential, Kumerswamy, Gamma, Beta, Rayleigh, Erlang distributions).<br>The objective function under a constraint is imposed here in crisp and fuzzy environment. The objective is to find the optimal maximum inventory level for a given review time that minimize the expected annual total cost. Furthermore, a comparison between given distributions is made to find the optimal distribution that achieves the model under considerations. Finally, a numerical example is applied.</p> 2018-06-13T00:00:00+00:00 ##submission.copyrightStatement##