Applied and Computational Mathematics

Archive

Volume 4, Issue 1, February 2015

  • Stability Analysis for Finite Difference Scheme Used for Seismic Imaging Using Amplitude and Phase Portrait

    Olowofela Joseph A., Akinyemi Olukayode D., Ajani Olumide Oyewale

    Issue: Volume 4, Issue 1, February 2015
    Pages: 1-4
    Received: 22 September 2014
    Accepted: 22 October 2014
    Published: 14 January 2015
    DOI: 10.11648/j.acm.20150401.11
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    Abstract: A finite difference scheme is produced when partial derivatives in the partial differential equation(s) governing a physical phenomenon like the propagation of seismic waves through real media are replaced by a finite difference approximation. The result is a single algebraic equation which, when solved, provide an approximation to the solution of ... Show More
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  • Texture Classification Using Spline, Wavelet Decomposition and Fractal Dimension

    Saad Al-Momen, Loay E. George, Raid K. Naji

    Issue: Volume 4, Issue 1, February 2015
    Pages: 5-10
    Received: 26 December 2014
    Accepted: 15 January 2015
    Published: 27 January 2015
    DOI: 10.11648/j.acm.20150401.12
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    Abstract: Feature extraction is an important process for texture classification. This paper suggests two sets of features for texture analysis. In the first set of features, a set of fractal features is obtained from the eight wavelet sub-bands that are generated by applying Haar wavelet transform twice times according to dyadic architecture. The fractal fea... Show More
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  • Effects of First-Order Reactant on MHD Turbulence at Four-Point Correlation

    M. Abu Bkar Pk, Abdul Malek, M. Abul Kalam Azad

    Issue: Volume 4, Issue 1, February 2015
    Pages: 11-19
    Received: 1 January 2015
    Accepted: 18 January 2015
    Published: 30 January 2015
    DOI: 10.11648/j.acm.20150401.13
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    Abstract: The purpose of this study is to determine the effect of first order reactant of MHD fluid turbulence for four-point correlations earlier than the ending phase. Three and four point correlation equations are obtained. The correlation equations are changed to spectral type by their Fourier-transform. By neglecting the quintuple correlations in compar... Show More
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  • Optimal Harvesting Policy of Discrete-Time Predator-Prey Dynamic System with Holling Type-IV Functional Response and Its Simulation

    Rui-Ling Zhang, Wan-Xiong Wang, Li-Juan Qin

    Issue: Volume 4, Issue 1, February 2015
    Pages: 20-29
    Received: 14 November 2014
    Accepted: 29 November 2014
    Published: 2 February 2015
    DOI: 10.11648/j.acm.20150401.14
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    Abstract: This paper deals with a discrete-time prey-predator system with Holling type-IV function response in the presence of some alternative food to predator and harvesting of prey species. By theoretical analysis and numerical simulation, comparing with the system without harvesting, ecological equilibrium point of the system is removed if harvesting eff... Show More
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