International Journal of Systems Science and Applied Mathematics

Volume 1, Issue 4, November 2016

  • Model Optimal Control of the Four Tank System

    Wael A. Altabey

    Issue: Volume 1, Issue 4, November 2016
    Pages: 30-41
    Received: 10 September 2016
    Accepted: 26 September 2016
    Published: 15 October 2016
    DOI: 10.11648/j.ijssam.20160104.11
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    Abstract: The four tank system is a widely used mechatronic laboratory system in control theory. This work is aimed to choose the best controller for the four tank system (4TS) with two input force. The optimal control is one of the best techniques in a sense of performance, and is demonstrated for the level control of 4TS. There are several controller syste... Show More
  • Partial Averaging of Fuzzy Hyperbolic Differential Inclusions

    Tatyana Alexandrovna Komleva, Irina Vladimirovna Molchanyuk, Andrej Viktorovich Plotnikov, Liliya Ivanovna Plotnikova

    Issue: Volume 1, Issue 4, November 2016
    Pages: 42-49
    Received: 19 September 2016
    Accepted: 28 September 2016
    Published: 19 October 2016
    DOI: 10.11648/j.ijssam.20160104.12
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    Abstract: In this article, we considered the fuzzy hyperbolic differential inclusions (fuzzy Darboux problem), introduced the concept of R-solution and proved the existence of such a solution. Also the substantiation of a possibility of application of partial averaging method for hyperbolic differential inclusions with the fuzzy right-hand side with the smal... Show More
  • Comparative Analysis of Numerical Solution to a Linear System of Algebraic Equations

    Aliyu Bhar Kisabo, Aliyu Adebimpe Funmilayo, Major Kwentoh Augustine Okey

    Issue: Volume 1, Issue 4, November 2016
    Pages: 50-57
    Received: 28 September 2016
    Accepted: 9 October 2016
    Published: 31 October 2016
    DOI: 10.11648/j.ijssam.20160104.13
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    Abstract: In engineering and science, linear systems of algebraic equations occur often as exact or approximate formulations of various problems. These types of equations are well represented in matrix form. A major challenge for researchers is the choice of algorithm to use for an appropriate solution. In this study, we choose to experiment with three algor... Show More
  • An Algorithm to Solve Fuzzy Trapezoidal Transshipment Problem

    P. Gayathri, K. R. Subramanian

    Issue: Volume 1, Issue 4, November 2016
    Pages: 58-62
    Received: 15 September 2016
    Accepted: 10 October 2016
    Published: 9 November 2016
    DOI: 10.11648/j.ijssam.20160104.14
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    Abstract: The fuzzy transportation problem in which available commodity frequently moves from one source to another source or destination before reaching its actual destination is called a fuzzy transshipment problem. In this paper, a new method is proposed to find the fuzzy optimal solution of fuzzy transportation problems with the following transshipment: ... Show More
  • A Coupling Method of Homotopy Perturbation and Aboodh Transform for Solving Nonlinear Fractional Heat - Like Equations

    Mohand M. Abdelrahim Mahgoub

    Issue: Volume 1, Issue 4, November 2016
    Pages: 63-68
    Received: 8 October 2016
    Accepted: 18 October 2016
    Published: 15 November 2016
    DOI: 10.11648/j.ijssam.20160104.15
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    Abstract: In this paper, we present the solution of nonlinear fractional Heat - Like equations by using Aboodh transform homotopy perturbation method (ATHPM). The proposed method was derived by combining Aboodh transform and homotopy perturbation method. This method is seen as a better alternative method to some existing techniques for such realistic problem... Show More
  • Comparative Analysis of Three NOCT-Based Cell Temperature Models

    Anyanime Tim Umoette, Emmanuel A. Ubom, Ibiangake Etie Akpan

    Issue: Volume 1, Issue 4, November 2016
    Pages: 69-75
    Received: 25 October 2016
    Accepted: 18 November 2016
    Published: 21 December 2016
    DOI: 10.11648/j.ijssam.20160104.16
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    Abstract: In this paper, comparative analyses of three NOCT-based cell temperature models are presented. The models are the HOMER (Hybrid Optimization of Multiple Energy Resources) software cell temperature, Ross cell temperature model and Davis and Rauschenbach cell temperature model. Noticeably, unlike PVSysts software, the three models do not include the ... Show More
  • Determination of Refractivity Gradient and Geoclimatic Factor Using Radiosonde Data and Inverse Distance Weighting Spatial Interpolation for Missing Data

    Iniobong Jackson Etokebe, Mfonobong Charles Uko, Iwuchukwu Uchechi Chinwe

    Issue: Volume 1, Issue 4, November 2016
    Pages: 76-81
    Received: 16 October 2016
    Accepted: 17 November 2016
    Published: 12 January 2017
    DOI: 10.11648/j.ijssam.20160104.17
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    Abstract: In this paper, point refractivity gradient and geoclimatic factor are determined using radiosonde data on meteorological parameters obtained in Calabar, Nigeria. The meteorological parameters used are air temperature, pressure and humidity obtained from the radiosonde data archive of Nigerian Meteorological Agency. In view of the poor spatial resol... Show More
  • Estimation and Comparative Analysis of Atmospheric Refractivity and Fade Depth for Microwave Links in Calabar

    Akinloye Bolanle Eunice, Enyenihi Henry Johnson, Ezenugu Isaac A.

    Issue: Volume 1, Issue 4, November 2016
    Pages: 82-85
    Received: 16 October 2016
    Accepted: 28 December 2016
    Published: 21 January 2017
    DOI: 10.11648/j.ijssam.20160104.18
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    Abstract: Generally, to radio link engineers, determination of fade depth and refractivity of propagation links remains very significant, especially, during radio propagation planning. It gives a good insight into the expected performances of the communication link and serves as bedrock to improve on Quality of Service (QoS). In this paper, three years (2012... Show More
  • Performance Evaluation of Empirical Rain Rate Models for Computing Rain Attenuation

    Ezenugu Isaac Amazuilo, Nseobong. I. Okpura, Enyenihi Henry Johnson

    Issue: Volume 1, Issue 4, November 2016
    Pages: 86-90
    Received: 16 October 2016
    Accepted: 28 December 2016
    Published: 21 January 2017
    DOI: 10.11648/j.ijssam.20160104.19
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    Abstract: When computing rain attenuation with the International Telecommunication Union (ITU) model the rain rate is normally needed. However, only limited rain rate data are published by ITU for the various regions all over the globe. In order to obtain the missing rain rate data for ITU rain attenuation model, two empirical models used to generate the rai... Show More
  • Unsteady MHD Free Convective Three Phase Flow Through Porous Medium Sandwiched Between Viscous Fluids

    Joseph K. Moses, Idowu A. S, Lawal A. B, Darius P. B. Yusuf, Onwubuoya C.

    Issue: Volume 1, Issue 4, November 2016
    Pages: 91-108
    Received: 28 October 2016
    Accepted: 15 November 2016
    Published: 21 January 2017
    DOI: 10.11648/j.ijssam.20160104.20
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    Abstract: In this paper, the unsteady MHD free convective flow through porous medium sandwiched between electrically conducting viscous-incompressible fluids in a horizontal channel with heat and mass transfer, with the assumptions that the upper and lower channel are non-porous (clear regions) and the middle channel as porous respectively have been studied.... Show More