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14 research outcomes, page 1 of 2
  • publication . Article . 2021
    Open Access English
    Authors:
    Moulay Rchid Sidi Ammi; Mostafa Tahiri;
    Publisher: Refaad

    Fractional calculus has been widely used in mathematical modeling of evolutionary systems with memory effect on dynamics. In order to illustrate the efficiency of this non-integer order calculus, we employ SEIR models to model the dynamics, with and without memory, of t...

  • publication . Article . 2021
    Open Access English
    Authors:
    Moulay Rchid Sidi Ammi; Ibrahim Dahi;
    Publisher: Refaad

    In this work, we study the Poincare inequality in Sobolev spaces with variable exponent. As a consequence of this ´ result we show the equivalent norms over such cones. The approach we adopt in this work avoids the difficulty arising from the possible lack of density of...

  • publication . Article . 2021
    Open Access English
    Authors:
    Moulay Rchid Sidi Ammi; Mostafa Tahiri; Delfim F. M. Torres;
    Publisher: Refaad

    In this paper, we study an epidemic model with Atangana-Baleanu-Caputo fractional derivative. We obtain a special solution using an iterative scheme via Laplace transformation. Uniqueness and existence of a solution using the Banach fixed point theorem are studied. A de...

  • publication . Article . 2021
    Open Access English
    Authors:
    Aziza Benaboud;
    Publisher: Refaad

    This paper proposes a mathematical model of synchronous generator used as an interface between power plant energy sources and the electrical grid. Power electronic converter is then needed to adapt their synchronous speed to the network frequency. Control method is prop...

  • publication . Article . 2021
    Open Access English
    Authors:
    Mohammed S. El-Khatib; Tariq O. Salim; Atta A. K. Abu Hany;
    Persistent Identifiers
    Publisher: Refaad

    The aim of this article is to introduce a new form for the Laplace transform. This new definition will be considered as one of the generalizations of the usual (classical) Laplace transform. We employ the new ”Katugampola derivative”, which obeys classical properties an...

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  • publication . Article . 2021
    Open Access English
    Authors:
    Nechirvan Badal Ibrahim;
    Persistent Identifiers
    Publisher: Refaad

    In this paper, we define a new concept in theory of graph energy called coneighbor energy of a graph G, denoted by CE(G), as the sum of the absolute value of eigenvalues of its coneighbor matrix. We are going to derive some results about the coneighbor energy of graphs ...

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  • publication . Article . 2021
    Open Access English
    Authors:
    Ogoke Uchenna Petronilla;
    Publisher: Refaad

    This research is unlike many others in that the concept of the nested design is applied in the medical science as against the trend in the agricultural and social sciences. In this research, we consider a three-stage (2 × 5 × 2) nested design with the factors being Hosp...

  • publication . Article . 2021
    Open Access English
    Authors:
    Nourrdin SAIDOU;
    Publisher: Refaad

    The objective of this research paper is to follow up on the work already started in order to install a new mathematical analysis, the one we called Cartesian analysis see our previous works[1],[2]. During these last two papers, we started with the definition of cartesia...

  • publication . Article . 2021
    Open Access English
    Authors:
    Jihane Jebrane; Saiida Lazaar;
    Publisher: Refaad

    In the past decade, the Internet of Things (IoT) has emerged and has been of great importance in the digital world arousing the interest of the scientific community. The requirements of new small intelligent devices brought numerous security and privacy concerns. In ord...

  • publication . Article . 2021
    Open Access English
    Authors:
    Akram Chhaybi; Saiida Lazaar;
    Publisher: Refaad

    The Internet of Things (IoT) and the Cloud Computing are among the main technologies influencing the quality and efficiency of our social and economic activities. Their importance is quite notable in several areas such as remote medical care and healthcare monitoring sy...

14 research outcomes, page 1 of 2