Showing 2,021 - 2,040 results of 2,218 for search '"mathematical models"', query time: 0.08s Refine Results
  1. 2021

    Research on the Distribution of Emergency Supplies during the COVID-19 Epidemic by Jian-guo Zheng, Qing Yang, Shui-lin Chen

    Published 2023-01-01
    “…With the shortest total distribution distance as the objective function, a mathematical model of mixed integer linear programming is established, and the crossover operation of the genetic algorithm, the destruction operator and the repair operator of the large neighborhood search algorithm are introduced in the brain storm optimization algorithm to enhance the diversity of the solution while making the solution toward the optimal direction. …”
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    Article
  2. 2022

    Revising Transient-Pressure Solution for Vertical Well Intersected by a Partially Penetrating Fracture with Non-Darcy Flow Effect by Shuheng Cui, Jie Kong, Hongwei Yu, Cheng Chen, Junlei Wang

    Published 2020-01-01
    “…The principle purpose of this work is to formulate an accurate mathematical model to evaluate the transient pressure behavior of a well intercepted by a partially penetrating vertical fracture (PPVF) with non-Darcy flow effect. …”
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    Article
  3. 2023

    Development of an information measuring and control system for a quadrocopter by V. V. Sleptsov, V. L. Afonin, A. E. Ablaeva, Ba Phuong Dinh

    Published 2021-12-01
    “…A functional scheme and a mathematical model of the information-measuring and control system of the quadrocopter in the form of a block diagram are developed taking into account the influence of delays in the receipt of information from the sensors of the quadrocopter parameters. …”
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    Article
  4. 2024

    Assessment of the sedimentation and trapping efficiency in dam reservoirs by applying the settling basin framework by Bérenger Koffi, Koffi Eugène Kouakou, Alexis Loukou Brou, Martin Sanchez, Ouédé Gla Blaise, Brice Wawogninlin Coulibaly, Franck Hervé Akaffou, Michal Habel, Amani Michel Kouassi, Dibi Brou, Kouakou Lazare Kouassi

    Published 2025-02-01
    “…This study presents a hydrosedimentary mathematical model based on the theory of settling basins and Gamma Law approaches to describe the settling velocity of suspended solids. …”
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    Article
  5. 2025

    Improved Adaptive PI-like Fuzzy Control Strategy of Permanent Magnet Synchronous Motor by Wenshao Bu, Shihao Guo, Zongang Fan, Jinwei Li

    Published 2025-01-01
    “…The fuzzy controller is a popular choice for permanent magnet synchronous motor (PMSM) control systems because of its advantages, such as straightforward design, and no reliance on the precise mathematical model of the motor. But the existing pure PI-like fuzzy control strategy still has some disadvantages, such as poor adaptive ability and large overshooting. …”
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    Article
  6. 2026

    A study on fuzzy cognitive maps using fuzzy inference system by Appasamy Saraswathi, Seyyed Edalatpanah, Sanaz Hami Hassan Kiyadeh

    Published 2024-12-01
    “…Due to a lack of information, the future state of the real system might not be known completely. Fuzzy mathematical modelling represents a real-world problem in a mathematical form to find solutions to the problem that correspond closely to how humans perceive it. …”
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    Article
  7. 2027

    Hybrid Decision-Making Frameworks under Complex Spherical Fuzzy N-Soft Sets by Muhammad Akram, Maria Shabir, Ahmad N. Al-Kenani, José Carlos R. Alcantud

    Published 2021-01-01
    “…As an illustration, we design a mathematical model for the selection of the best physiotherapist doctor of Mayo hospital, Lahore. …”
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    Article
  8. 2028

    Modeling the Kinetics of Potassium Diffusion in Estima Potato under Different Leaching Conditions by David Adu-Poku, Selina A. Saah, Jacob K. Agbenorhevi

    Published 2020-01-01
    “…The optimum operating conditions were 80°C preheating and leaching at temperatures up to 50°C. The proposed mathematical model offered a satisfactory description of both dynamic and equilibrium mass transfers of potassium by adequately predicting the fraction of potassium from potato cubes and spheres. …”
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    Article
  9. 2029

    Method for assessing the theoretical characteristics of small axial hydraulic turbines by D. V. Mylkin, A. V. Volkov, B. M. Orakhelashvili, A. A. Druzhinin, V. Yu. Lyapin

    Published 2023-12-01
    “…This article based on an analysis of existing methods for designing and using a mathematical model of a hydraulic turbine with simplified blades, proposes a method for designing and analyzing the theoretical characteristics of the resulting hydraulic turbine. …”
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    Article
  10. 2030

    Management of Energy Exchange Process on Metro Rolling Stock with On-Board Capacitive Energy Storage by Sulym A.O., Khozia P.O., Fomin O.V., Bahrov O.M.

    Published 2025-02-01
    “…The first task is to create a mathematical model and to define the requirements to control system for energy exchange processes currently being developed for metro rolling stock with capacitive energy storage devices. …”
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    Article
  11. 2031

    Modeling and Vibration Analysis of a 3-UPU Parallel Vibration Isolation Platform with Linear Motors Based on MS-DT-TMM by Wei Chen, Jiaqi Tong, Hehe Yang, Fulong Liu, Zhen Qin, Zhiyong Ren

    Published 2021-01-01
    “…Firstly, the dynamical mathematical model of this vibration isolator is innovatively established and solved by using the discrete-time transfer matrix method of the multibody system (MS-DT-TMM). …”
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    Article
  12. 2032

    Time to Consensus in International Negotiations by I. Z. Aronov, O. V. Maksimova

    Published 2024-09-01
    “…Utilizing formal mathematical modeling based on a modified DeGroot model, this article explores how variables such as the size of the negotiating group, the level of authoritativeness, dominance dynamics within the group, and coalition formation affect the time required to achieve consensus. …”
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  13. 2033

    Enhanced Oil Recovery by Cyclic Injection of Wettability Alteration Agent for Tight Reservoirs by Zhijie Wei, Yuyang Liu, Xiaodong Kang

    Published 2021-01-01
    “…A discrete-fracture-network-based mathematical model is developed with consideration of the displacement mechanisms and complicated physical-chemical phenomena during EOR by wettability alteration, and this model numerically solved by the fully implicit method. …”
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    Article
  14. 2034

    Analytical Analysis of the Mechanism and Mitigation Methods of Transient Overvoltage in Direct-Drive Wind Turbine Generators Connected to Weak Power System by Xu Tian, Shengtao Wu, Luran Wei, Lixin Zhang, Nan Wang, Quan Zheng

    Published 2025-01-01
    “…Addressing this issue, this paper establishes a mathematical model for the grid-connected system of direct-drive wind turbine generators. …”
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  15. 2035

    Theoretical and numerical study of profit in agricultural sector model using wavelet method by Yeshwanth R., Kumbinarasaiah S.

    Published 2025-03-01
    “…Together, numerical simulations and mathematical modeling analysis enhance agricultural management and understanding while offering crucial insights into the dynamics of agricultural profit. …”
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    Article
  16. 2036

    Multiobjective Optimization Design and Experimental Study of Desulfurization Dust Removal Centrifugal Pump Based on Immune Particle Swarm Algorithm by Yuqin Wang, Xinwang Huo, Hailong Ji

    Published 2018-01-01
    “…The velocity coefficient method was used for hydraulic design of centrifugal pump, and the three-dimensional modeling and numerical simulation of flow field of centrifugal pump were carried out by using computational fluid dynamics technology (CFD). The optimal mathematical model with the highest efficiency and the lowest pump net positive suction head NPSHr as the objective function was established under the condition of no curve hump. …”
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  17. 2037

    PREDICTING THE LEARNING PATH TO LEARNER’S OPTIMUM COMPREHENSION by Ifeanyi Isaiah Achi, Chukwuemeka Odi Agwu, Christopher Chizoba Nnamene, Sylvester C. Aniobi, Ifebude Barnabas C., Kelechi Christian Oketa, Godson Kenechukwu Ezeh, John Otozi Ugah

    Published 2024-04-01
    “…Hence, this research paper focuses on deriving an improved mathematical model for predicting the learning path to a learner’s optimum comprehension. …”
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  18. 2038

    Factors Controlling the Hydraulic Fracture Trajectory in Unconventional Reservoirs by Peng Zheng, Erhu Liu, Desheng Zhou, Xinwei Du, Zhongjun Ma

    Published 2022-01-01
    “…Based on the boundary element method, we established a mathematical model to study the factors controlling the morphology of hydraulic fracture. …”
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    Article
  19. 2039

    Minimizing Delay and Power Consumption at the Edge by Erol Gelenbe

    Published 2025-01-01
    “…These results are obtained with a mathematical model of a multiple-server edge system that is managed by a task distribution platform, whose equations are derived and solved using methods from stochastic processes. …”
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  20. 2040

    Two-stage deep reinforcement learning method for agile optical satellite scheduling problem by Zheng Liu, Wei Xiong, Zhuoya Jia, Chi Han

    Published 2024-11-01
    “…First, the scheduling process is decomposed into a task sequencing stage and an observation scheduling stage, and a mathematical model with complex constraints and two-stage optimization objectives is established to describe the problem. …”
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