International Journal of Systems Science and Applied Mathematics

Volume 2, Issue 1, January 2017

  • Stability and Time-Scale Analysis of Malaria Transmission in Human-Mosquito Population

    Kodwo Annan, Cedrick Dizala Mukinay

    Issue: Volume 2, Issue 1, January 2017
    Pages: 1-9
    Received: Sep. 09, 2016
    Accepted: Nov. 04, 2016
    Published: Dec. 02, 2016
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    Abstract: More realistic human-mosquito mathematical model in which re-infected asymptomatic humans are considered is presented. The Next Generation Matrix technique is used to construct epidemiological threshold known as the reproduction number. Locally and globally asymptotically stable disease-free equilibrium conditions for the model are established. Pos... Show More
  • Geo-cosmic Universal X-structure of Solar System Planets and Satellites in Applying to Exoplanet Systems

    A. G. Syromyatnikov

    Issue: Volume 2, Issue 1, January 2017
    Pages: 10-24
    Received: Oct. 13, 2016
    Accepted: Dec. 22, 2016
    Published: Jan. 18, 2017
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    Abstract: Given a new unique method of calculating satellite systems approved at all, without exception, 185 satellites of the Solar system. The base of the Geo-cosmic Universal X-structure of Solar system planets and satellites represents a discrete-continuous distribution of satellite and longest rings in axes the density/orbital radius (semi-major axis of... Show More
  • Improved Arc Interruption of High Voltage SF6 Circuit Breakers Using Modified Mayr’s Differential Equation

    Okpura Nseobong. I., Udoakah Y. N., Umoren M. A.

    Issue: Volume 2, Issue 1, January 2017
    Pages: 25-29
    Received: Oct. 16, 2016
    Accepted: Dec. 29, 2016
    Published: Jan. 19, 2017
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    Abstract: The study of arc interruption is very essential in high voltage circuit breakers since arc extinction must be achieved in the shortest possible time for effective protection of the power system. This paper presents some conventional arc models used in the research of interaction between switching arc and circuit during the interruption process of h... Show More
  • Comparative Study of RMSE and Functional Composition of Residual - Based Tuning of Hata Pathloss Model in the Suburban Area

    Wali Samuel, Nwiido Friday, Udoka Uduak Etim

    Issue: Volume 2, Issue 1, January 2017
    Pages: 30-35
    Received: Oct. 16, 2016
    Accepted: Jan. 04, 2017
    Published: Jan. 29, 2017
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    Abstract: In this paper, RMSE and functional composition of residual are used as correction factors for tuning Hata model in the suburban area and 800-900MHz GSM frequency band. The study is based on empirical measurements conducted at Abak town, a suburban area in Akwa Ibom state, Nigeria. The tuned model is obtained by adding the correction factor to the o... Show More
  • Mathematical Model and Algorithm for Determination of Minimum Antenna Mast Height for Terrestrial Line of Sight Microwave Link with Zero Path Inclination

    Wali Samuel, Steve Worgu, Elsie Chidinma Anderson

    Issue: Volume 2, Issue 1, January 2017
    Pages: 36-41
    Received: Oct. 31, 2016
    Accepted: Jan. 04, 2017
    Published: Jan. 31, 2017
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    Abstract: In this paper, mathematical model and algorithm for determination of minimum antenna mast height for terrestrial line of sight microwave link with zero path inclination is presented. The mathematical expressions developed are used for computing relevant link parameters while the algorithm gives the procedure for using the mathematical expressions f... Show More
  • Comparative Evaluation of the Pathloss Prediction Performance Hata-Okumura Pathloss Model for Urban, Suburban and Rural Areas

    Steve Worgu, Samuel Godwin Ajumo, Njumoke N. Odu

    Issue: Volume 2, Issue 1, January 2017
    Pages: 42-50
    Received: Oct. 31, 2016
    Accepted: Jan. 05, 2017
    Published: Feb. 23, 2017
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    Abstract: In this paper, comparative evaluation of the pathloss prediction performance of the popular Hata-Okumura model for urban, suburban and rural areas is carried out. The study is based on empirical measurements conducted at Imo state university campus for 800 MHz GSM network. The prediction performance of the three categories of the Hata-Okumura model... Show More