Showing 20,781 - 20,800 results of 22,513 for search '"Mathematics"', query time: 0.09s Refine Results
  1. 20781

    National and regional aspects of formation of physical culture and recreation environment in educational institutions of the Republic of Tatarstan by Manurov, Ilgiz M., Kalmanovich, Vladimir L.

    Published 2024-12-01
    “…In our work, we applied such methods as study and comparative analysis of pedagogical and methodological literature; systematic analysis of legal documents; generalization of the experience of pedagogical practice; questionnaires; methods of mathematical statistics and experimental methods. Physical culture and wellness environment of the university has a huge value potential and great opportunities in the field of training organization and education of students, formation of general culture, development of socially significant qualities and personal attitude to health care as a value. …”
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  2. 20782

    Dynamic Optimization Design of Cranes Based on Human–Crane–Rail System Dynamics and Annoyance Rate by Yunsheng Xin, Gening Xu, Nina Su

    Published 2017-01-01
    “…To improve the comfort of operators, a nine-degree-of-freedom (nine-DOF) mathematical model of a “human–crane–rail” system was constructed. …”
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  3. 20783

    An Effective Hybrid Self-Adapting Differential Evolution Algorithm for the Joint Replenishment and Location-Inventory Problem in a Three-Level Supply Chain by Lin Wang, Hui Qu, Tao Chen, Fang-Ping Yan

    Published 2013-01-01
    “…However, due to the JR-LIP’s difficult mathematical properties, simple and effective solutions for this NP-hard problem have eluded researchers. …”
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  4. 20784

    Detailed Compositional and Structure–Property Analysis of Ethylene Oxide‐Propylene Oxide Triblock Copolymers by Gergő Róth, Tibor Nagy, Ákos Kuki, Levente Novák, Dávid Nyul, Miklós Zsuga, Sándor Kéki

    Published 2025-01-01
    “…In addition, a linear regression model has been constructed to find a mathematical relationship between the percentage of ethylene oxide, the average number of propylene oxide units, and the properties of the copolymer.…”
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  5. 20785

    Nonlinear control design of a DC microgrid based on the integral sliding mode controller by Akli Hajar, Abouobaida Hassan, Mchaouar Youssef, Fathelkhair Abdelmoghit, Oualifi Khadija

    Published 2025-01-01
    “…The structure of energy conversion is elaborated by the mathematical model, controlled by a nonlinear technique which is the integral sliding mode control (ISMC). …”
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  6. 20786

    Power Spectral Density Conversions and Nonlinear Dynamics by Mostafa Rassaian

    Published 1994-01-01
    “…To predict the vibration environment of a payload carried by a ground or air transporter, mathematical models are required from which a transfer function to a prescribed input can be calculated. …”
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  7. 20787

    Predictive modeling and optimization of tubular distiller operation using response surface methodology under silver nanomaterial infused PCM thickness variations by W.M. Farouk, Ayman Hoballah, Z.M. Omara, Fadl A. Essa

    Published 2025-02-01
    “…This study introduces a novel mathematical model to predict freshwater production and temperature profiles within a tubular solar still (TSS) under varying conditions. …”
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    Article
  8. 20788

    Gear Skiving and Tool Design Method for Manufacturing Tangent Quadruple Circular-arc Harmonic Flexsplines by Guo Erkuo, Xu Jia, Hong Yang, Liu Chang, Hu Lele

    Published 2024-12-01
    “…The kinematic model of skiving and the mathematical model of the tangent quadruple circular-arc harmonic flexspline were established. …”
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    Article
  9. 20789

    New Method for Calculating the Settlement of Single Pile and Pile Group in Soft Soil Area by Jingjing Xu, Xu Xu, Wenjuan Yao

    Published 2020-01-01
    “…This paper fits the τ-z curve of a single pile by mathematical methods. Based on the one-dimensional similarity of the τ-z curves, the τ-z curves of single pile under different loads are derived. …”
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  10. 20790

    Study on the Gap Flow Simulation in EDM Small Hole Machining with Ti Alloy by Shengfang Zhang, Wenchao Zhang, Yu Liu, Fujian Ma, Chong Su, Zhihua Sha

    Published 2017-01-01
    “…Based on the solid-liquid two-phase flow equation, the mathematical model on the gap flow field with flushing and self-adaptive disturbation is developed. …”
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  11. 20791

    MECHANICAL ANALYSIS OF THE DRILL BIT IN THE DUAL CASING SIDETRACKING by KONG ChunYan, LIANG Zheng, ZHANG DeRong

    Published 2016-01-01
    “…Considered the situation of that the sidetracking bit in actual contact with the oil casing wall,cement ring,technical casing wall and rock formations,established the bending moment mathematical model of the dual casing sidetracking drill bit,and combined with examples using MATLAB software solved the relationship between the drill bit bending moment and the drill bit horizontal moving distance under that Three different working conditions was given. …”
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    Article
  12. 20792

    Empirical and Experimental Perspectives on Big Data in Recommendation Systems: A Comprehensive Survey by Kamal Taha, Paul D. Yoo, Chan Yeun, Aya Taha

    Published 2024-09-01
    “…Covering a wide range of algorithms, this taxonomy first categorizes algorithms into four main analysis types: user and item similarity based methods, hybrid and combined approaches, deep learning and algorithmic methods, and mathematical modeling methods, with further subdivisions into sub-categories and techniques. …”
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  13. 20793

    Bayesian Probabilistic Framework for Damage Identification of Steel Truss Bridges under Joint Uncertainties by Wei Zheng, Yi Yu

    Published 2013-01-01
    “…The former could lead to model uncertainties due to the discrepancy between physical configurations and their mathematical models, while the latter could induce model parameter uncertainties due to difficulty in obtaining accurate model parameters of complex joint details. …”
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  14. 20794

    Alternating Generalized Projection Method for Satellite Reflectarray Synthesis with Sequential Stages of Different Illuminations by Rafael Florencio, René Escalante

    Published 2024-12-01
    “…When large reflectarrays are considered for satellite applications, several trap points can appear, producing oscillatory behavior between several trap points. A mathematical formalism which supports the idea that a reduction in the edge illumination of an antenna involves fewer trap points is described. …”
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  15. 20795

    Laws of Gas Diffusion in Coal Particles: A Study Based on Experiment and Numerical Simulation by Yongjiang Hao, Xiaofeng Ji, Jiewen Pang

    Published 2021-01-01
    “…Then, according to Fick diffusion law and Darcy percolation law, the mathematical models of methane emission from the spherical coal particles were created, respectively, and the corresponding calculating software was programmed by the finite difference method to obtain the simulated CMDQ of each sample under different conditions. …”
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  16. 20796

    Numerical Simulation Study on In-Depth Profile Control of Core–Shell Coagulation System Considering the Time-Variation of Permeability by Zhaobo Sun, Shuchun Cao, Gongchang Wang, Xiaofei Jia, Guoqing Ning

    Published 2024-01-01
    “…Considering these two phenomena comprehensively, a new three-dimensional, three-phase, six-component mathematical model that can take into account the time-varying phenomenon of reservoir permeability is proposed for a new kind of in-depth profile control system, namely, the core–shell coagulation system, and an integrated numerical simulation software is developed. …”
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  17. 20797

    Gas-Water Flow Behavior in Water-Bearing Tight Gas Reservoirs by Renyi Cao, Liyou Ye, Qihong Lei, Xinhua Chen, Y. Zee Ma, Xiao Huang

    Published 2017-01-01
    “…Based on the experimental results, this paper presents mathematical models to describe flow behaviors of gas and water in tight gas formations; the threshold pressure gradient, stress sensitivity, and relative permeability are all considered in our models. …”
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    Article
  18. 20798

    The Application of the Logistic Equation Model to Predict the Remineralization Characteristics of Desensitizing Paste by Stanley Chibuzor Onwubu, Phumlane Selby Mdluli, Shenuka Singh, Obiora Cornelius Collins

    Published 2019-01-01
    “…Objectives. A mathematical model making using of the Verhulst logistic equation was developed to predict the remineralization behaviors of desensitizing paste. …”
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  19. 20799
  20. 20800

    Study on Evaluation Theory of Bridge Damage State and Methodology on Early Warning of Danger by Guofu Jiang, Qianxue Liang, Hua Wang, Yucai Ju, Haihua Wang, Xirui Wang, Longlin Wang, Wensheng Wang

    Published 2022-01-01
    “…According to the evaluation results, combined with mathematical-statistical analysis methods and principal component analysis methods, the methodology on early warning of danger for bridge structures can be realized. …”
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