Showing 241 - 260 results of 1,057 for search 'matrix (mathematics)', query time: 0.07s Refine Results
  1. 241

    Absolute calibration methodology for non-uniform uranium and matrix distributions in large barrels of uranium-bearing solid waste by K. M. El-Kourghly

    Published 2024-12-01
    “…The method relies on the mathematical calibration of a High Purity Germanium (HPGe) detector efficiency against non-uniform uranium and matrix distributions, assuming that the non–uniform distribution can be approximated as a uniform one for low–density matrix materials. …”
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    Series and Connections Among Central Factorial Numbers, Stirling Numbers, Inverse of Vandermonde Matrix, and Normalized Remainders of Maclaurin Series Expansions <sup>†</sup> by Feng Qi

    Published 2025-01-01
    “…This paper presents an extensive investigation into several interrelated topics in mathematical analysis and number theory. The author revisits and builds upon known results regarding the Maclaurin power series expansions for a variety of functions and their normalized remainders, explores connections among central factorial numbers, the Stirling numbers, and specific matrix inverses, and derives several closed-form formulas and inequalities. …”
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    Robust Position Control of a Knee-Joint Rehabilitation Exoskeleton Using a Linear Matrix Inequalities-Based Design Approach by Sahar Jenhani, Hassène Gritli, Jyotindra Narayan

    Published 2025-01-01
    “…The derivation of these LMI conditions is grounded in a comprehensive theoretical framework that employs advanced mathematical tools, including the matrix inversion lemma, Young’s inequality, the Schur complement, the S-procedure, and specific congruence transformations. …”
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  17. 257

    Effect of Matrix-Wellbore Flow and Porosity on Pressure Transient Response in Shale Formation Modeling by Dual Porosity and Dual Permeability System by Daolun Li, Wenshu Zha, Dewen Zheng, Longjun Zhang, Detang Lu

    Published 2015-01-01
    “…We find that the ratio of fracture permeability to matrix permeability approximately decides the bottom hole pressure (BHP) error caused by omitting the flow between matrix and wellbore and that the effect of matrix porosity on BHP is related to adsorption gas content. …”
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  18. 258

    Mathematical Modeling of Public Opinions: Parameter Estimation, Sensitivity Analysis, and Model Uncertainty Using an Agree-Disagree Opinion Model by Sara Bidah, Omar Zakary, Mostafa Rachik, Hanane Ferjouchia

    Published 2020-01-01
    “…In this paper, we present a mathematical model that describes agree-disagree opinions during polls. …”
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