International Journal of Systems Science and Applied Mathematics

Volume 5, Issue 4, December 2020

  • An EOQ Inventory Model for Time-varying Deteriorating Items with Cubic Demand under Salvage Value and Shortages

    Biswaranjan Mandal

    Issue: Volume 5, Issue 4, December 2020
    Pages: 36-42
    Received: Oct. 03, 2020
    Accepted: Oct. 17, 2020
    Published: Nov. 11, 2020
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    Abstract: In this paper, an Economic Order Quantity (EOQ) inventory model is developed for time-varying deteriorating items. Researchers are constantly developing deteriorating inventory models to become more realistic. Many items like paddy, wheat, potato, onion, radioactive substance etc. are becoming damage over time. So time dependent deterioration is mo... Show More
  • Modelling and Optimal Control of Ebola Virus Disease in the Presence of Treatment and Quarantine of Infectives

    Herick Laiton Kayange, Estomih Shedrack Massawe, Daniel Oluwole Makinde, Lathika Sunil Immanuel

    Issue: Volume 5, Issue 4, December 2020
    Pages: 43-53
    Received: Oct. 30, 2020
    Accepted: Nov. 11, 2020
    Published: Nov. 23, 2020
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    Abstract: In this paper, a non-linear mathematical model for the dynamics of Ebola virus diseases is formulated and analysed. The model has five classes namely susceptible human, exposed human, infected human, treated human and recovered human. Invariant region and positivity solution of the model are determined. Local stability analyses of disease free Equi... Show More