Showing 1,621 - 1,640 results of 3,115 for search '"mathematical modeling"', query time: 0.09s Refine Results
  1. 1621

    A malaria model with partial immunity in humans by Jia Li

    Published 2008-09-01
    “…In this paper, we formulate a mathematical model for malaria transmission thatincludes incubation periods for both infected human hosts and mosquitoes. …”
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  2. 1622

    Ulam Stability, Lyapunov-Type Inequality, and the Eigenvalue Problem for Model of Discrete Fractional-Order Deflection Equations of Vertical Columns and a Rotating String with Two-... by Jehad Alzabut, Raghupathi Dhineshbabu, Abdelkader Moumen, A. George Maria Selvam, Mutti-Ur Rehman

    Published 2024-12-01
    “…In particular, it seems that the exploration of the stability of DFC is crucial. A mathematical model of the discrete fractional equation describing the deflection of a vertical column along with two-point boundary conditions featuring the Riemann–Liouville operator is constructed to study several kinds of Ulam stability results in this research work. …”
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  3. 1623

    A Fast Finite-Difference Time Domain Simulation Method for the Source-Stirring Reverberation Chamber by Wenxing Li, Chongyi Yue, Atef Elsherbeni

    Published 2017-01-01
    “…In this paper, we present a fast simulation method, which is able to significantly decrease the simulation time of the source-stirring reverberation chamber. The mathematical model of this method is given in detail and home-made FDTD code is employed to conduct the simulations and optimizations as well. …”
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  4. 1624

    Low failure recovery cost controller placement strategy in software defined networks by Qi WU, Hongchang CHEN

    Published 2020-12-01
    “…The controller placement is an important problem in software defined networks.Existing researches pay more attention to deploying controller planning for node failures and ignore the fact that the link failure can also effect the network drastically.To solve the problem,a mathematical model for the controller placement that plans ahead for the link failures to avoid a drastic increase failure recovery cost was proposed.To solve the model,an algorithm based on simulated annealing was designed.The simulation results show that the proposed model and algorithm can improve the robustness of the network.The maximum failure recovery cost is significantly reduced when a link falls in failures.…”
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  5. 1625

    Multi-objective Optimization Design for a Kind of Three-translation Parallel Robot Mechanism by Zhiyuan Ma, Wei Zhu, Hanbing Li, Kanrong Gu, Chuanwei Wang, Jiuwei Shi

    Published 2019-02-01
    “…The optimization mathematical model is set up with the optimization goal of workspace and global dexterity. …”
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  6. 1626

    Analysis of Climatic Model Using Fractional Optimal Control by Muhammad Nadeem, Mustafa Habib, Muntaha Safdar, Patrick Kandege Mwanakatwe

    Published 2023-01-01
    “…In this research, we propose a fractional optimal control approach to effectively deal with the accessible resources and minimize the restriction of variables. The mathematical model is formulated in terms of the Caputo fractional derivative. …”
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  7. 1627

    Analysis of singularity planar multi-linkage mechanism of fourth order by E. S. Gebel

    Published 2020-11-01
    “…That is why the singularity problem is relevant for such mechanisms and should be studied to avoid jamming of links or the appearance of uncontrolled movements. The mathematical model is based on the theory of screws and contains the closed-loop equilibrium equations obtained for the investigated mechanism. …”
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  8. 1628

    Numerical Investigation on Suppressing High Frequency Self-Excited Noises of Armature Assembly in a Torque Motor Using Ferrofluid by Hasiaoqier Han, Songjing Li, Liang Guo, Qingwen Wu

    Published 2017-01-01
    “…Attempting to suppress high frequency self-excited noises of armature assembly, ferrofluid is added to the working clearances of torque motor. The mathematical model of resistance force of ferrofluid applied to armature is derived theoretically from parallel plate squeeze flow theory and ferrofluid constitutive model in which shear thickening and shear thinning effects are taken into account. …”
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  9. 1629

    A surface model of nonlinear, non-steady-state phloem transport by Youcef Mammeri, Damien Sellier

    Published 2017-07-01
    “…Following Thompson and Holbrook[35]'s approach, we develop a mathematical model of coupled water-carbohydrate transport. …”
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  10. 1630

    Binary mixture convection in a horizontal channel under the Soret effect action by Stepanova Irina

    Published 2024-01-01
    “…The mathematical model describing stationary flow of binary liquid mixture is under consideration. …”
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  11. 1631

    A profit maximization model for sustainable inventory under preservation technology and linear time-dependent holding cost by - Aashish, Pavan Kumar

    Published 2025-01-01
    “…In addition, a mathematical model is constructed to maximize the total profit function and the concavity is shown using three-dimensional graph. …”
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  12. 1632
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  15. 1635

    Evaluation of Turbojet Engine with Water Injection for Aircraft Use as Controlled Object by Alexandru-Nicolae Tudosie, Mihai Lungu

    Published 2024-12-01
    “…An embedded control system was described by its mathematical model; based on its equations, its block diagram with transfer functions was issued. …”
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  16. 1636

    Study on Dynamics of Hydraulic Control System for Automatic Loading and Unloading of Drill Pipe of Geological Drilling Rig by Zhijian Liu, Yunlong Chen, Hailong Ruan

    Published 2022-01-01
    “…The simulation model verifies the mathematical model. It is concluded that the maximum transient force of steel wire rope is caused by the elastic coefficient K of steel wire rope, but the magnitude is independent of K. …”
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  17. 1637

    Permeability Enhancement of Coal Seam by Lower Protective Layer Mining for Gas Outburst Prevention by Aiping He, Hua Fu, Bingjie Huo, Chaojun Fan

    Published 2020-01-01
    “…Based on the engineering background of the lower protective layer mining in Changping Coal Mine, the numerical simulation using the proposed mathematical model was performed. The results showed that the stress and permeability of the protected layer in #3 coal seam evolved dynamically with the advancement of the working face of the protective layer in #8 coal seam. …”
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  18. 1638

    Study of unusable liquid propellant residues evaporation processes parameters in the tanks of launch vehicle worked-off stage in microgravity by V. I. Trushlyakov, V. A. Urbansky

    Published 2019-06-01
    “…The physical and mathematical model of the liquid evaporation process is based on the first thermodynamics law. …”
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  19. 1639

    Study on Strength Variation of Permeable Concrete Based on Differential Calorimetry Method and Multi-Index Test by Sanqiang Yang, Meng Guo, Shichao Duan, Na Liu, Haonan Wu, Erxia Du, Meichen Liang

    Published 2019-01-01
    “…Moreover, the open gradation of pervious concrete mix ratio design is selected, and the cement content should be within the range of 20%–25%. (3) The mathematical model of permeability coefficient and porosity ratio of permeable concrete is established: k=−0.0003n2+0.0057n−0.0044; the mathematical model of permeability coefficient and compressive strength of open-graded pervious concrete: k=0.99006−0.05389c+8.02×10−4c2. …”
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  20. 1640

    Presenting a multi-objective decision-making model for cost-time trade-off considering the time value of money and solving it using particle swarm optimization by Mohammadreza Shahriari

    Published 2024-08-01
    “…To achieve this, a bi-objective mathematical model is developed to support decision-makers in selecting the optimal schedule for project execution.Methodology: In this study, a bi-objective mathematical model is proposed to balance cost and time, incorporating a nonlinear cost function and the time value of money. …”
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