Showing 2,821 - 2,840 results of 3,115 for search '"mathematical models"', query time: 0.09s Refine Results
  1. 2821

    An improved meta-heuristic algorithm to optimize the fractional-order controller for an industrial manipulator with a parallelogram structure by Nazila Nikdel

    Published 2023-09-01
    “…Therefore, this article pursues two main objectives: 1) controlling the robotic system by presenting a method based on fractional-order calculus so that it can control the system despite its complexity and non-linearity, 2) presenting the meta-heuristic algorithm "Improved Grey Wolf" to optimize the system response.Methodology: First, the mathematical model of the robot is presented based on Lagrange rules, and then the fractional-order calculus is used to design the controller. …”
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    Article
  2. 2822

    Dynamic collateral sensitivity profiles highlight opportunities and challenges for optimizing antibiotic treatments. by Jeff Maltas, Anh Huynh, Kevin B Wood

    Published 2025-01-01
    “…Finally, we develop a stochastic mathematical model based on a Markov decision process consistent with observed dynamic collateral profiles to show measurements across time are required to optimally constrain antibiotic resistance.…”
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    Article
  3. 2823

    Physiology-informed regularisation enables training of universal differential equation systems for biological applications. by Max de Rooij, Balázs Erdős, Natal A W van Riel, Shauna D O'Donovan

    Published 2025-01-01
    “…Systems biology tackles the challenge of understanding the high complexity in the internal regulation of homeostasis in the human body through mathematical modelling. These models can aid in the discovery of disease mechanisms and potential drug targets. …”
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    Article
  4. 2824

    RESOURCES AND TECHNOLOGY AS FACTORS AFFECTING RUSSIA’S WOOD INDUSTRY: A CASE STUDY OF THE NORTHERN REGIONS by Maxim A. Shishelov, Vladimir A. Noskov

    Published 2024-12-01
    “…This study proposes a methodological toolkit for assessing the growth factors influencing the efficiency of Russia’s wood industry, employing mathematical modeling and forecasting. The findings reveal and quantify the impact of resource and technological factors on improving efficiency, providing a detailed analysis of their influence on target performance indicators. …”
    Article
  5. 2825

    A linear hydraulic fracture with tortuosity and fluid–slip at the fluid–rock interface by M.R.R. Kgatle-Maseko, T.L. Vetezo

    Published 2025-03-01
    “…A hydraulic fracture with tortuosity and fluid–slip at the fluid–rock interface is replaced by a two-dimensional symmetric model fracture. The mathematical model is formulated using a modified Reynolds flow law and a linear crack law. …”
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    Article
  6. 2826

    Trust Region Policy Learning for Adaptive Drug Infusion with Communication Networks in Hypertensive Patients by Mai The Vu, Seong Han Kim, Ha Le Nhu Ngoc Thanh, Majid Roohi, Tuan Hai Nguyen

    Published 2025-01-01
    “…In previous works where model-based and fuzzy controllers are used to control AABP, model-based controllers rely on the precise mathematical model, while fuzzy controllers entail complexity due to rule sets. …”
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    Article
  7. 2827

    Optimization Research on the Performance of the RC-DTH Air Hammer Based on Computational Fluid Dynamics by Zihao Liu, Yongjiang Luo, Wenchao He, Rui Tao, Jiangfu He, Yongliang Sun, Hongwei Chen, Qianting Hu

    Published 2025-01-01
    “…To optimize the performance of the RC-DTH air hammer, a mathematical model detailing each phase of the piston’s movement has been constructed in the present work. …”
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  8. 2828

    Research on Constriction Resistance of Drum Gear Coupling of High Speed EMU by Chunjun Chen, Xiang Zheng, Lu Yang, Linchun Zhou

    Published 2021-10-01
    “…In order to research the constriction resistance of the drum gear coupling of high speed EMU traction motor drive system,by using the geometrical analysis method,a mathematical model of the external tooth surface is established according to the structural parameters of the coupling. …”
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    Article
  9. 2829

    A robust multi-objective multi-priodic planning approach to the problem of locating the allocation of organ transplant centers under conditions of uncertainty by Elham Nejati, Mahdi Yousefi Nejad Attari, Asgar Hajibadali

    Published 2023-11-01
    “…On the other hand, due to the rapid growth of the demand for organ transplantation and the lack of resources, the patient's waiting time to complete the transplantation process plays a vital role in the organ transplantation system.Methodology: This study presents a robust bi-objective mathematical model for the location problem of allocating organ transplant centers under uncertainty, which includes the total costs of the organ transplant system as well as the average patient waiting time for organ transplantation, which follows a G/G/m queuing system.Findings: To solve this model, the Non-Dominated Sorting Genetic Algorithm II (NSGA-II) has been used. …”
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    Article
  10. 2830

    Simulation of structured populations in chemically stressed environments by Thomas G. Hallam, Qingping Deng

    Published 2005-10-01
    “…The spatial location of the chemical stressor determines the exposure levels and ultimately the effects on the population while the relative location of the resource and organism determines growth. We develop a mathematical model, the numerical analysis for this model, and the simulation techniques necessary to solve the problem of population dynamics in an environment where heterogeneity is generated by resource and chemical stressor. …”
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  11. 2831

    The Future of Last-Mile Delivery: Lifecycle Environmental and Economic Impacts of Drone-Truck Parallel Systems by Danwen Bao, Yu Yan, Yuhan Li, Jiajun Chu

    Published 2025-01-01
    “…Specifically, a mathematical model for this delivery system is developed to optimize joint delivery operations. …”
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  12. 2832

    MHD flow of Williamson nanofluid using effective similarity variable considering viscous dissipation and thermal radiation over a non-linear stretching surface via OHAM by Muhammad Awais Sherani, Muhammad Sohail, Ibrahim Mahariq, Syed Tehseen Abbas

    Published 2025-03-01
    “…The conservation laws of mass, momentum, and energy which are represented as partial differential equations form the foundation of the mathematical model. Using an appropriate similarity transformation, these equations are converted into ordinary differential equations, which can then be resolved numerically OHAM technique. …”
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    Article
  13. 2833

    Prediction of oxygen regime indicators in Danube river by V. L. Bezsonnyi, O. V. Tretyakov, A. N. Nekos, Ye. V. Chistov

    Published 2024-11-01
    “…Statistical, the Streeter-Phelps mathematical model was applied. Results. The study used long-term data from the state monitoring of water resources of the Danube River on indicators of dissolved oxygen (DO) and biochemical oxygen demand (BOD5). …”
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  14. 2834

    An advanced approach to directly calculate eutectic points in quaternary and higher-order slags: A case study on CaF2–Al2O3–CaO–MgO–SiO2 slag systems by Yi-ming Li, Jia-long Tian, Zhou-hua Jiang

    Published 2025-03-01
    “…By utilizing FactSage thermodynamic data and machine learning (ML), the liquidus temperatures of all slags within this screening range are calculated. A mathematical model incorporating the characteristics of eutectic points was established, converting the graphical position data of slag eutectic points into numerical data. …”
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    Article
  15. 2835

    Hydrodynamic Effects of River-Lake System Connectivity on Ecological Restoration of Urban Rivers: A Case Study of Liede River by WANG Shaobo, ZHANG Shu, XIONG Yulong, ZHOU Xinmin

    Published 2025-01-01
    “…To investigate the hydrodynamic effects of river-lake system connectivity on the ecological restoration of urban rivers supplemented by reclaimed water, a four-tier framework was employed to establish a mathematical model of river-lake hydrodynamics and pollutant transport by using the Liede River as an example. …”
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  16. 2836

    Optimal configuration strategy of energy storage considering flexible response of high energy-consuming industrial and mining loads in independent microgrid by Cuomu Yixi, Xiaoming Liu, Yu Li, Jingming Tan, Zhihong Liu, Basang Danzeng, Lei Wang

    Published 2025-01-01
    “…Firstly, considering the production process of extracting lithium from salt lakes brine and the electricity consumption characteristics of major energy-consuming equipment, a mathematical model is developed to quantify the flexibility adjustment potential of lithium mining loads under production behavior constraints. …”
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  17. 2837

    Structural and Economic Approach to the Selection of Peak Regulating Capacities at Thermal Power Plants by E. V. Bohdan, M. B. Karnitski

    Published 2023-12-01
    “…A generalized desirability function has been obtained, which includes a number of parameters for choosing a rational relationship and mutual influence between the reliability and efficiency of electricity production with the participation of thermal power plant equipment in regulating the daily load schedule. The proposed mathematical model is an effective means of analyzing the suitability of equipment for use in the required operating modes.…”
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  18. 2838

    Two-Echelon Pickup and Delivery Problem Using Public Transport in City Logistics by Shuai Wang, Xiaoning Zhu, Pan Shang, Wenqian Liu, Xiao Lin, Lóránt Tavasszy

    Published 2024-01-01
    “…We formulate a new mathematical model based on a space-time network and adopt an adaptive large neighborhood search (ALNS) algorithm for the 2E-PDP-PT. …”
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  19. 2839

    Optimal control strategies for toxoplasmosis disease transmission dynamics via harmonic mean-type incident rate by Usman Khan, Farhad Ali, Ohud A. Alqasem, Maysaa E. A. Elwahab, Ilyas Khan, Ariana Abdul Rahimzai

    Published 2024-06-01
    “…The goal of this study is to consider the mathematical model of Toxoplasma disease with harmonic mean type incident rate and also consider that the population of humans and cats is not equal (birth rate and the death rate are not equal). …”
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  20. 2840

    Single stage auction clearing model for electricity market considering congestion by R.R. Lekshmi, S. Balamurugan

    Published 2025-03-01
    “…The approach involves modelling of the market clearing mechanism as an optimization problem with the aim of maximizing the producer and consumer surplus, meeting the power equilibrium while maintaining the line power flows within the limit. A generalized mathematical model of the problem is formulated in MATLAB Live editor and deployed on an IEEE 5-bus system, while considering two different line limit conditions. …”
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