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Showing 1 - 20 results of 447 for search 'selection coefficient equation', query time: 0.13s Refine Results
  1. 1

    Reaeration Coefficient Empirical Equation Selection for Water Quality Modeling in Surface Waterbodies: An Integrated Numerical-Modeling-Based Technique with Field Case Study by Balsam J. M. Al-Saadi, Hussein A. M. Al-Zubaidi

    Published 2025-04-01
    “…Empirical equations were developed by many investigators to determine the reaeration coefficients (Ka) required for predicting dissolved oxygen concentrations (DO) in surface waters, especially rivers, lakes, and reservoirs. …”
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    Article
  2. 2

    Quasi-boundary Value Method for Backward Heat Conduction Equation with Variable Coefficients by YANGTianhao, SUNWei

    Published 2023-10-01
    “… Aiming at the problem of inhomogeneous backward heat conduction equation with time-dependent coefficients in a one- dimensional region , the quasi-boundary value method is used to solve this problem. …”
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    Article
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    Dynamical Behavior and the Classification of Single Traveling Wave Solutions for the Coupled Nonlinear Schrödinger Equations with Variable Coefficients by Zhao Li, Peng Li, Tianyong Han

    Published 2021-01-01
    “…Then, phase portraits of coupled nonlinear Schrödinger equations with variable coefficients are plotted by selecting the suitable parameters. …”
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    Article
  5. 5

    Integrable Riesz Fractional-Order Generalized NLS Equation with Variable Coefficients: Inverse Scattering Transform and Analytical Solutions by Hongwei Li, Sheng Zhang, Bo Xu

    Published 2025-04-01
    “…The focus of this article is on extending this progress to nonlocal fractional-order Schrödinger-type equations with variable coefficients. Specifically, based on the analysis of anomalous dispersion relation (ADR), a novel variable-coefficient Riesz fractional-order generalized NLS (vcRfgNLS) equation is derived. …”
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    Article
  6. 6

    Efficient Calculation of Propagation Coefficients in Anisotropic Media Through Transfer Matrix Method Based on Eigenvalue Analysis by Jiuyang Fan, Zhixiang Huang, Xiaoli Feng, Yuxian Zhang

    Published 2025-01-01
    “…Starting from the anisotropic Maxwell’s equations, the governing equation in matrix form is constructed from constitutive relations of the electromagnetic field. …”
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    Article
  7. 7

    Reducing the Friction Coefficient of Heavy-Load Spherical Bearings in Bridges Using Surface Texturing—A Numerical Study by Qian Hu, Qingxiang Pei, Pei Li

    Published 2025-04-01
    “…In this study, GQZ-60000 unidirectionally movable spherical bearings were the research object, and three different surface textures—spherical cap, ellipsoidal cap, and double spherical cap—were incorporated into a curved PTFE surface to enhance its tribological performance, with the major focus being on reducing the friction coefficient. The Jakobsson–Floberg–Olsson cavitation boundary condition was used to solve the Reynolds equation numerically to obtain the elastohydrodynamic lubrication pressure, and the parametric effect of the three textures on the friction coefficient were analyzed. …”
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    Article
  8. 8

    Structural Equation Modeling and Genome-Wide Selection for Multiple Traits to Enhance Arabica Coffee Breeding Programs by Matheus Massariol Suela, Camila Ferreira Azevedo, Ana Carolina Campana Nascimento, Eveline Teixeira Caixeta Moura, Antônio Carlos Baião de Oliveira, Gota Morota, Moysés Nascimento

    Published 2025-07-01
    “…To address these challenges, we conducted a comprehensive analysis involving confirmatory factor analysis (CFA), Bayesian networks (BN), structural equation modeling (SEM), and genome-wide selection (GWS) using data from 195 arabica coffee plants. …”
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    Article
  9. 9

    Structural equation modeling of organizational silence and bullying on employees turnover willingness(The case: selected governmental organizations in Ahvaz) by mahdi naddaf, farajollah rahimi, zahra hadizade

    Published 2016-03-01
    “…In order to analyze data and test hypotheses Pearson correlation coefficient using SPSS software and structural equation modeling using AMOS software were utilized. …”
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    Article
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    Construction and verification of the adequacy of the regression equation of the bending tensile strength from the ratio of composite material components by A. V. Erofeev, A. A. Morkovin, T. I. Gorokhov

    Published 2022-06-01
    “…The press was used to measure the bending tensile strength. The regression equation has been also obtained, the response surface has been constructed and the adequacy check of the obtained regression coefficients has been performed.…”
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    Estimation Approach of Road Friction Coefficient Based on Nonlinear Least Squares by DING Xiying, LIU Rihui, CUI Ziwei, SHEN Siyao, CHENG Kailong

    Published 2016-01-01
    “…First of all, based on the structure of monorail car, two degrees of freedom vehicle lateral motion model was established, then the least squares problem was build according to the dynamics equations , at the same time it put forward a new method of iterative initial value selection. …”
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    Article
  15. 15

    ESTIMATION OF SOFTWARE COMPLEXITY OF CALCULATION OF AUTOREGRESSION COEFFICIENTS AT DIGITAL SPECTRAL ANALYSIS by Andrey Zuev, Andrey Ivashko, Denis Lunin

    Published 2022-03-01
    “…The results obtained: it is shown that spectral estimation methods based on Yul-Walker equations, which require the calculation of autoaggression coefficients, combine sufficient resolution and resistance to interference with acceptable implementation complexity. …”
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    Article
  16. 16

    Optical Characteristics of GaAs Spherical Quantum Dots Based on Single and Double Quartic Anharmonic Potentials: The Role of Structural Parameters by Najah Abdullah Alashqar, Walid Belhadj, Najla S. Al-Shameri, Hassen Dakhlaoui, Fatih Ungan, Sake Wang

    Published 2025-07-01
    “…The radial Schrödinger equation was solved using the finite difference method (FDM) to obtain the energy levels and the wavefunctions. …”
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    Article
  17. 17

    Seismic Resistance of Reinforced Concrete Building Frames Based on Interval Assessment of the Coefficient of Permissible Damage by Ashot Tamrazyan, Tatiana Matseevich

    Published 2024-11-01
    “…On average, for the frames under consideration, the coefficient <i>K</i><sub>1</sub> was 0.526, which is 1.5 times greater than the coefficient proposed in modern Russian standards, <i>K</i><sub>1</sub> = 0.35. …”
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    Article
  18. 18

    Internal Damper Characteristics of Rotor System with Submerged ER Fluid Journal Bearing by Siyoul Jang, John A. Tichy

    Published 1997-01-01
    “…Continuous shear strain rate equation about shear stress which simulates Bingham-like fluid shows viscosity variations. …”
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    Article
  19. 19

    The SDEMMA model for galactic cosmic ray and its dosimetric application by Xiaojian Song, Ran Huo, Songying Xu, Songying Xu, Xuemei Chen, Xuemei Chen, Xi Luo

    Published 2025-04-01
    “…To address this challenge, we present the Space-Dependent Energetic cosmic ray Modulation using MAgnetic spectrometer (SDEMMA) model, a novel framework for modeling galactic cosmic ray (GCR) dynamics in deep-space environments.MethodsThe model employs stochastic differential equations with outer boundary conditions derived from contemporary local interstellar spectrum models. …”
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  20. 20

    Experimental Study on Effect of Operating Temperature on Evaporation Accommodation Coefficient of Working Fluid in Sodium Heat Pipe by MA Zaiyong1, 2, ZHOU Zheng1, 2, MA Yugao3, WU Qi1, 2, ZHANG Luteng1, 2, LIAN Qiang1, 2, TANG Simiao1, 2, PAN Liangming1, 2

    Published 2024-10-01
    “…Different methods for selecting vapor temperatures, in combination with measured outer wall temperature, were employed to derive the experimental values of acc under different work conditions and operating temperatures based on the Hertz-Knudsen-Schrage equation. …”
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    Article