American Journal of Applied Mathematics

Volume 4, Issue 3, June 2016

  • Effects of Mass Transfer on Unsteady Hydromagnetic Convective Flow Past an Infinite Vertical Rotating Porous Plate with Heat Source

    Thomas Mwathi Ngugi, Mathew Ngugi Kinyanjui, David Theuri

    Issue: Volume 4, Issue 3, June 2016
    Pages: 114-123
    Received: 11 February 2016
    Accepted: 23 February 2016
    Published: 25 April 2016
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    Abstract: The effect of mass transfer on unsteady Hydromagnetic convective flow, of an incompressible electrically conducting fluid, past an infinite vertical rotating porous plate in presence of constant injection and heat source has been investigated. The non-linear partial differential equations governing the flow are solved numerically using the finite d... Show More
  • Application of Statistical Methods of Time-Series for Estimating and Forecasting the Wheat Series in Yemen (Production and Import)

    Douaik Ahmed, Youssfi Elkettan, Abdulbakee Kasem

    Issue: Volume 4, Issue 3, June 2016
    Pages: 124-131
    Received: 4 April 2016
    Accepted: 15 April 2016
    Published: 4 May 2016
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    Abstract: Due to the importance of the wheat crop which represents 90% of the grain consumed, In this papers, we compared between the following statistical methods : Box and Jenkins model, exponential smoothing models (with trend and without seasonal) and Simple regression for estimating and forecasting to two time series of wheat(production and import). We ... Show More
  • Symmetries and Conservation Laws for Hamiltonian Systems

    Estomih Shedrack Massawe

    Issue: Volume 4, Issue 3, June 2016
    Pages: 132-136
    Received: 19 April 2016
    Accepted: 3 May 2016
    Published: 14 May 2016
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    Abstract: In this paper, it is shown that symmetry of a physical system is a transformation which may be applied to the state space without altering the system or its dynamical interaction in any way. The theory is applied to generalize the concept of symmetries and conservation laws with external to Hamiltonian systems with external forces. By this we obtai... Show More
  • A Variational Definition for Limit and Derivative

    Munhoz Antonio Sergio, Souza Filho, Antonio Calixto

    Issue: Volume 4, Issue 3, June 2016
    Pages: 137-141
    Received: 18 May 2016
    Published: 22 May 2016
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    Abstract: Using the topological notion of compacity, we present a variational definition for the concepts of limit and derivative of a function. The main result of these new definition is that they produce implementable tests to check whether a value is the limit or the derivative of a differenciable function.
  • Numerical and Analytic Method for Solving Proposal Fuzzy Nonlinear Volterra Integral Equation by Using Homotopy Analysis Method

    Sameer Qasim Hasan, Alan Jalal Abdulqader

    Issue: Volume 4, Issue 3, June 2016
    Pages: 142-157
    Received: 4 May 2016
    Accepted: 14 May 2016
    Published: 28 May 2016
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    Abstract: In this paper, we presented the convergence of the solution for the nonlinear fuzzy volterra integral equation with high computational and complexity to find the solution in analytical method, so we describable this solution by using Homotopy analysis method, by using Banach fixed point theory for existence and uniqueness. That with explained numer... Show More
  • Rainfall Variability and Linear Trend Models on North-West Part of Bangladesh for the Last 40 Years

    M. Anisur Rahman, S. M. Mostafa Kamal, M. Maruf Billah

    Issue: Volume 4, Issue 3, June 2016
    Pages: 158-162
    Received: 26 February 2016
    Accepted: 13 May 2016
    Published: 4 June 2016
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    Abstract: Rainfall has been extensively considered as one of the initial point towards the apprehension of climate change courses. Bangladesh is recently experiencing climate change impact related to hazards like cyclone, rainfall, flood, draught etc. Climate variable like rainfall is the most important parameter which is linked with agricultural aspects too... Show More
  • Construction of Sc Chordal and Sc Weakly Chordal Graphs

    Parvez Ali, Syed Ajaz Kareem Kirmani

    Issue: Volume 4, Issue 3, June 2016
    Pages: 163-168
    Received: 13 April 2016
    Accepted: 18 May 2016
    Published: 4 June 2016
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    Abstract: Study of any graph class includes characterization, recognition, counting the number of graphs i.e. cataloging and construction of graphs. The construction of sc chordal graphs by mean of complementing permutation is one of the known method. In this paper, a new method for the construction of sc chordal graphs is proposed based on a two-pair of gra... Show More