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An International Journal of Optimization and Control: Theories & Applications
                                                   ISSN: 2146-0957 eISSN: 2146-5703
                                                    Vol.15, No.3, pp.464-482 (2025)
                                               https://doi.org/10.36922/IJOCTA025120054


            RESEARCH ARTICLE

            Application of Jumarie-Stancu Collocation Series Method and
            Multi-Step Generalized Differential Transform Method to fractional

            glucose-insulin


                                         3
                                                              3
            Sayed Saber 1,2* , Brahim Dridi , Abdullah Alahmari , and Mohammed Messaoudi  4
            1
             Department of Mathematics, Faculty of Science, Al-Baha University, Al-Baha, Saudi Arabia
            2
             Department of Mathematics and Computer Science, Faculty of Science, Beni-Suef University, Egypt
            3
             Department of Mathematics, Faculty of Sciences, Umm Al-Qura University, Saudi Arabia
            4
             Department of Mathematics and Statistics, College of Science, Imam Mohammad Ibn Saud Islamic
            University (IMSIU), Riyadh, Saudi Arabia
             Sayed011258@science.bsu.edu.eg, iodridi@uqu.edu.sa, aaahmari@uqu.edu.sa, mmessaoudi@imamu.edu.sa
            ARTICLE INFO                     ABSTRACT
            Article History:
            Received: March 19, 2025          This study applies the Multi-Step Generalized Differential Transform Method
            1st revised: April 20, 2025       (MSGDTM) and the Jumarie-Stancu Collocation Series Method (JSCSM) to
            2nd revised: April 24, 2025       analyze a fractional-order Model (1). The model incorporates Caputo frac-
            Accepted: April 29, 2025          tional derivatives to capture the nonlocal and memory-dependent characteris-
            Published Online: May 20, 2025    tics of glucose-insulin interactions, considering physiological factors such as β-
                                              cell activity and external glucose intake. Stability analysis reveals bifurcations
            Keywords:
                                              and chaotic attractors, demonstrating the system’s sensitivity to fractional or-
            Fractional calculus
                                              ders. Numerical simulations compare MSGDTM and JSCSM accuracy and
            Glucose-insulin model
                                              efficiency, highlighting MSGDTM’s superior convergence and lower approxi-
            Numerical methods
                                              mation error. The results show that fractional-order modeling provides a more
            Chaos control
                                              accurate framework for understanding glucose-insulin dynamics and predict-
            Numerical simulation
            MSGDTM                            ing metabolic behavior. Furthermore, control mechanisms are introduced to
            JSCSM                             mitigate chaos, offering potential strategies for managing diabetes. This work
                                              emphasizes the robustness of MSGDTM in solving complex fractional biological
            AMS Classification:               models. It provides insights into fractional calculus applications in biomedical
            46C05; 49J20; 93C20; 49K20;       research.
            34K05; 34A12; 26A33










            1. Introduction                                   the complex physiological memory and hereditary
                                                              properties inherent in biological systems. To ad-
            Insulin regulation is a cornerstone of human meta-  dress this limitation, fractional-order differential
            bolic processes, with imbalances leading to dia-  equations (FDEs) have emerged as a powerful
            betes mellitus, a chronic condition affecting mil-  tool, incorporating memory effects and nonlocal
            lions worldwide.    Understanding the glucose-    dynamics that better represent real-world biolog-
            insulin interaction is crucial for developing ef-  ical phenomena.
            fective treatment strategies. Traditional integer-
            order models are widely used to describe these        Fractional calculus, characterized by its non-
            interactions; however, they often fail to capture  local operators and ability to retain memory
               *Corresponding Author
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