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  • Open Access

    REVIEW

    An Overview and Comparative Study of Traditional, Chaos-Based and Machine Learning Approaches in Pseudorandom Number Generation

    Issah Zabsonre Alhassan1,2,*, Gaddafi Abdul-Salaam1, Michael Asante1, Yaw Marfo Missah1, Alimatu Sadia Shirazu1

    Journal of Cyber Security, Vol.7, pp. 165-196, 2025, DOI:10.32604/jcs.2025.063529 - 07 July 2025

    Abstract Pseudorandom number generators (PRNGs) are foundational to modern cryptography, yet existing approaches face critical trade-offs between cryptographic security, computational efficiency, and adaptability to emerging threats. Traditional PRNGs (e.g., Mersenne Twister, LCG) remain widely used in low-security applications despite vulnerabilities to predictability attacks, while machine learning (ML)-driven and chaos-based alternatives struggle to balance statistical robustness with practical deployability. This study systematically evaluates traditional, chaos-based, and ML-driven PRNGs to identify design principles for next-generation systems capable of meeting the demands of high-security environment like blockchain and IoT. Using a framework that quantifies cryptographic robustness (via NIST SP… More >

  • Open Access

    ARTICLE

    A Multi-Objective Joint Task Offloading Scheme for Vehicular Edge Computing

    Yiwei Zhang, Xin Cui*, Qinghui Zhao

    CMC-Computers, Materials & Continua, Vol.84, No.2, pp. 2355-2373, 2025, DOI:10.32604/cmc.2025.065430 - 03 July 2025

    Abstract The rapid advance of Connected-Automated Vehicles (CAVs) has led to the emergence of diverse delay-sensitive and energy-constrained vehicular applications. Given the high dynamics of vehicular networks, unmanned aerial vehicles-assisted mobile edge computing (UAV-MEC) has gained attention in providing computing resources to vehicles and optimizing system costs. We model the computing offloading problem as a multi-objective optimization challenge aimed at minimizing both task processing delay and energy consumption. We propose a three-stage hybrid offloading scheme called Dynamic Vehicle Clustering Game-based Multi-objective Whale Optimization Algorithm (DVCG-MWOA) to address this problem. A novel dynamic clustering algorithm is designed… More >

  • Open Access

    ARTICLE

    Modeling and Simulation of Epidemics Using q-Diffusion-Based SEIR Framework with Stochastic Perturbations

    Amani Baazeem1, Muhammad Shoaib Arif2,*, Yasir Nawaz3, Kamaleldin Abodayeh2

    CMES-Computer Modeling in Engineering & Sciences, Vol.143, No.3, pp. 3463-3489, 2025, DOI:10.32604/cmes.2025.066299 - 30 June 2025

    Abstract The numerical approximation of stochastic partial differential equations (SPDEs), particularly those including q-diffusion, poses considerable challenges due to the requirements for high-order precision, stability amongst random perturbations, and processing efficiency. Because of their simplicity, conventional numerical techniques like the Euler-Maruyama method are frequently employed to solve stochastic differential equations; nonetheless, they may have low-order accuracy and lower stability in stiff or high-resolution situations. This study proposes a novel computational scheme for solving SPDEs arising from a stochastic SEIR model with q-diffusion and a general incidence rate function. A proposed computational scheme can be used to… More >

  • Open Access

    ARTICLE

    A Computational Model for Enhanced Mammographic Image Pre-Processing and Segmentation

    Khlood M. Mehdar1, Toufique A. Soomro2,3,*, Ahmed Ali4, Faisal Bin Ubaid5, Muhammad Irfan6,*, Sabah Elshafie Mohammed Elshafie1, Aisha M. Mashraqi7, Abdullah A. Asiri8, Nagla Hussien Mohamed Khalid8, Hanan T. Halawani7

    CMES-Computer Modeling in Engineering & Sciences, Vol.143, No.3, pp. 3091-3132, 2025, DOI:10.32604/cmes.2025.065471 - 30 June 2025

    Abstract Breast cancer remains one of the most pressing global health concerns, and early detection plays a crucial role in improving survival rates. Integrating digital mammography with computational techniques and advanced image processing has significantly enhanced the ability to identify abnormalities. However, existing methodologies face persistent challenges, including low image contrast, noise interference, and inaccuracies in segmenting regions of interest. To address these limitations, this study introduces a novel computational framework for analyzing mammographic images, evaluated using the Mammographic Image Analysis Society (MIAS) dataset comprising 322 samples. The proposed methodology follows a structured three-stage approach. Initially,… More >

  • Open Access

    ARTICLE

    Feasibility of Using Optimal Control Theory and Training-Performance Model to Design Optimal Training Programs for Athletes

    Yi Yang, Che-Yu Lin*

    CMES-Computer Modeling in Engineering & Sciences, Vol.143, No.3, pp. 2767-2783, 2025, DOI:10.32604/cmes.2025.064459 - 30 June 2025

    Abstract In order to help athletes optimize their performances in competitions while prevent overtraining and the risk of overuse injuries, it is important to develop science-based strategies for optimally designing training programs. The purpose of the present study is to develop a novel method by the combined use of optimal control theory and a training-performance model for designing optimal training programs, with the hope of helping athletes achieve the best performance exactly on the competition day while properly manage training load during the training course for preventing overtraining. The training-performance model used in the proposed optimal… More >

  • Open Access

    ARTICLE

    Mathematical Modeling of Leukemia within Stochastic Fractional Delay Differential Equations

    Ali Raza1,2,*, Feliz Minhós2,3,*, Umar Shafique4, Muhammad Mohsin5

    CMES-Computer Modeling in Engineering & Sciences, Vol.143, No.3, pp. 3411-3431, 2025, DOI:10.32604/cmes.2025.060855 - 30 June 2025

    Abstract In 2022, Leukemia is the 13th most common diagnosis of cancer globally as per the source of the International Agency for Research on Cancer (IARC). Leukemia is still a threat and challenge for all regions because of 46.6% infection in Asia, and 22.1% and 14.7% infection rates in Europe and North America, respectively. To study the dynamics of Leukemia, the population of cells has been divided into three subpopulations of cells susceptible cells, infected cells, and immune cells. To investigate the memory effects and uncertainty in disease progression, leukemia modeling is developed using stochastic fractional… More >

  • Open Access

    ARTICLE

    Relevant Fluid Dynamics Aspects of the Internal Ballistics in a Small-Scale Hybrid Thruster

    Sergio Cassese1, Riccardo Guida2,3,*, Daniele Trincone1, Stefano Mungiguerra1, Raffaele Savino1

    FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.6, pp. 1299-1337, 2025, DOI:10.32604/fdmp.2025.065605 - 30 June 2025

    Abstract Robust numerical tools are essential for enabling the use of hybrid rocket engines (HREs) in future space applications. In this context, Computational Fluid Dynamics (CFD) transient simulations can be employed to analyse and predict relevant fluid dynamics phenomena within the thrust chamber of small-scale HREs. This work applies such techniques to investigate two unexpected behaviours observed in a 10 N-class hydrogen peroxide-based hybrid thruster: an uneven regression rate during High-Density Polyethylene (HDPE) and Acrylonitrile Butadiene Styrene (ABS) fuel tests, and non-negligible axial consumption in the ABS test case. The present study seeks to identify their… More >

  • Open Access

    ARTICLE

    Enhancing Hydrothermal Performance of Dimpled Tubes: Investigating the Impact of Different Dimple Sizes and Distribution along the Tube

    Basima Salman Khalaf*, Abeer H. Falih, Basim Freegah

    Frontiers in Heat and Mass Transfer, Vol.23, No.3, pp. 943-956, 2025, DOI:10.32604/fhmt.2025.065366 - 30 June 2025

    Abstract The main purpose of this research is to optimize the hydrothermal performance of a dimpled tube by augmenting the surface area for heat transmission and thermal layer cracking. To achieve that, the impact of different dimple diameters and their distribution along the dimpled tube was investigated numerically using the ANSYS Fluent 2022 R1 software by considering two models, A and B. Both models consist of three regions; the first, second, and third have dimple diameters of 3, 2, & 1 mm, respectively. Model A included an in-line dimple arrangement, while model B involved a staggered… More >

  • Open Access

    EDITORIAL

    Introduction to the Special Issue on Mathematical Aspects of Computational Biology and Bioinformatics-II

    Dumitru Baleanu1,2, Carla M. A. Pinto3, Sunil Kumar4,*

    CMES-Computer Modeling in Engineering & Sciences, Vol.143, No.2, pp. 1297-1299, 2025, DOI:10.32604/cmes.2025.067010 - 30 May 2025

    Abstract This article has no abstract. More >

  • Open Access

    ARTICLE

    HPLC-DAD Profiling and Diuretic Effect of Solanum elaeagnifolium (Cav.) Aqueous Extract: A Combined Experimental and Computational Approach

    Bouslamti Mohammed1, Nouioura Ghizlane1, Tbatou Widad1, Mohamed Chebaibi2,3, Abdulsalam Alhalmi4, Najoua Soulo1, Sulaiman Mohammed Alnasser5, Fahad M Alshabrmi6, Amine Elbouzidi7,*, Lyoussi Badiaa1, Benjelloun Ahmed Samir1

    Phyton-International Journal of Experimental Botany, Vol.94, No.5, pp. 1505-1518, 2025, DOI:10.32604/phyton.2025.063896 - 29 May 2025

    Abstract The Solanum genus is known for its diverse bioactive compounds, yet its diuretic potential remains understudied. This research commenced with an analysis of polyphenol and flavonoid content in Solanum elaeagnifolium leaf extract (SEFE) using colorimetric techniques, followed by HPLC-DAD to delineate its chemical composition. The aqueous extract revealed prominent constituents: naringin (12.38%), quercetin 3-O-B-D-Glucoside (27.25%), and flavone (15.26%). A 15-day study on normal rats investigated the diuretic potential of SEFE at repeated doses. SEFE significantly increased urine volume and urinary sodium/potassium levels without inducing hypokalaemia, contrasting with furosemide, a standard diuretic that induced hypokalaemia. Conversely, furosemide, a… More >

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