Showing 381 - 400 results of 6,053 for search 'model composition (method OR methods)', query time: 0.18s Refine Results
  1. 381

    Penalized Composite Likelihood Estimation for Spatial Generalized Linear Mixed Models by Mohsen Mohammadzadeh, Leyla Salehi

    Published 2024-04-01
    “…However, the maximum likelihood methods are plagued with substantial calculations for large data sets, resulting in long waiting times for estimating the model parameters. …”
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    Article
  2. 382

    Algorithm and mathematical model for geometric positioning of segments on aspherical composite mirror by B. Conquet, L. F. Zambrano, N. K. Artyukhina, R. V. Fiodоrtsev, A. R. Silie

    Published 2018-09-01
    “…The variant of construction of arrays through concentric rings of an equal step is offered.A sequential three-step method for distributing mosaic segments is presented when performing calculations for aligning the aspherical surface: multipath linear; multipath point; block trapezoidal.In the course of mathematical modeling an algorithm was developed to solve the problem of geometric positioning of flat hexagonal segments of a mirror telescope. …”
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  3. 383
  4. 384

    Identification and modelling of applicable wear conditions for stir cast Al-composite by Santanu Sardar, Santanu Kumar Karmakar, Debdulal Das

    Published 2019-10-01
    “…Two-body abrasion experiments following Taguchi L27 orthogonal design have been performed separately on alloy and composite materials, both prepared by the stir casting method. …”
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  5. 385

    Crude Oil Futures Price Forecasting Based on Variational and Empirical Mode Decompositions and Transformer Model by Linya Huang, Xite Yang, Yongzeng Lai, Ankang Zou, Jilin Zhang

    Published 2024-12-01
    “…This model integrates a second decomposition and Transformer model-based machine learning method. …”
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    Article
  6. 386
  7. 387

    Research progress in data-driven constitutive modeling of composite solid propellants by Bin Yuan, Hongfu Qiang, Chunguo Yue

    Published 2025-05-01
    “…Against this backdrop, this paper reviews the research on data-driven constitutive modeling of composite solid propellants. The aim is to organize existing achievements, analyze the strengths and weaknesses of different methods, discuss the current key issues and future development trends in this field, and provide references and foundations for further promoting the research and application of constitutive modeling of composite solid propellants.…”
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  8. 388

    Calculation of Constrained Stress in Expansive Mortar with a Composite Creep Model by Hyeonggil Choi, Bongsuk Cho

    Published 2016-01-01
    “…The creep of mortar and concrete mixed with the expansive additive was evaluated using a composite model of the paste and aggregate. Under the assumption that the modeled creep deformation is proportional to the stress and the gel volume of the hydration products, which allows the law of superposition to be applied, the distribution stress was predicted by applying the step-by-step method at each time increment. …”
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  9. 389

    Theoretical model of effective elastic moduli of composites considering the inclusion features by Xuqian Liu, Zhangyu Wu, Shuohui Chen

    Published 2025-05-01
    “…The non-spherical particle packing structures are created by the discrete element method. Based on the particulate structures, the reliability of the proposed modified TPA can be verified by the numerical simulation using the lattice model. …”
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  10. 390

    Data-driven Oxidation Kinetic Model Construction of Silicon Carbide Composites by Xiao Manyu, Zheng Wenqing, Luan Xingang, Xu Xinming

    Published 2025-01-01
    “…By leveraging mechanical performance evolution data of SiCf/SiC in various single environments, along with Gaussian functions and parameter optimization methods, and incorporating the composite material's chemical reaction characteristics, an automatic construction of the oxidation kinetics model for SiCf/SiC under complex multi-field coupling environments was achieved based on data-driven strategy. …”
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  11. 391

    Compositional and Machine Learning Tools to Model Plant Nutrition: Overview and Perspectives by Léon Etienne Parent

    Published 2025-02-01
    “…The accuracy of the ML methods averaged 84% across the crops. The additive and orthogonal log ratios of CoDa reduce a <i>D</i>-parts soil composition to <i>D</i>-1 variables, alleviating redundancy in the predictive ML models. …”
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  12. 392
  13. 393

    Determination of Nettle Leaves Extracts Antioxidant Activity by Various Methods by O. V. Trineeva, A. I. Slivkin, E. F. Safonova

    Published 2020-08-01
    “…The aim of this work was a comparative determination of the АА of medicinal plant raw materials of nettle dioica by various methods. Materials and methods. The object of the study was the finished crushed raw material of dioica nettle leaves (Folia Urticae) in filter bags produced by a domestic manufacturer. …”
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  14. 394

    Dynamic Modeling and Composite Attitude Cooperative Control for Dumbbell-Shaped Spacecraft by Qingmu Ai, Yingzi Guan, Yuzhi Wang, Shunli Li

    Published 2025-01-01
    “…A virtual leader is designed using model predictive control. Force synthesis techniques are integrated with attitude coordination methods featuring a virtual leader. …”
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  15. 395

    Mathematical Modeling of an Active-Fiber Composite Energy Harvester with Interdigitated Electrodes by A. Jemai, F. Najar, M. Chafra, Z. Ounaies

    Published 2014-01-01
    “…In fact, most of the modeling approaches found in the literature for AFC are based on finite element methods. …”
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  16. 396

    Influence of modeling agents on the surface properties of an esthetic nano-hybrid composite by Zeynep Bilge Kutuk, Ecem Erden, Damla Lara Aksahin, Zeynep Elif Durak, Alp Can Dulda

    Published 2020-05-01
    “…ObjectiveThe aim of this study was to evaluate the influence of different modeling agents on the surface microhardness (Vickers hardness number; VHN), roughness (Ra), and color change (ΔE) of a nano-hybrid composite with or without exposure to discoloration by coffee.Materials and MethodsSixty-four cylinder-shaped nano-hybrid composite specimens were prepared using a Teflon mold. …”
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  17. 397

    Validation of Analytical Methods for Quality Control of Gel for Dentin Remineralization by A. L. Golovanenko, E. S. Berezina, I. V. Alekseeva, O. A. Oleshko

    Published 2023-12-01
    “…As a result of the studies, methods of testing for authenticity were developed, it was found that the proposed methods are characterized by a negative analytical signal on model mixtures free of the analyte and placebo, and a positive analytical signal on model mixtures of various compositions containing the analyte. …”
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  18. 398

    A Multi-Objective Optimization Design Method for High-Aspect-Ratio Wing Structures Based on Mind Evolution Algorithm Backpropagation Surrogate Model by Jin Nan, Junhua Zheng, Bochuan Jiang, Yuhang Li, Jiayun Chen, Xuanqing Fan

    Published 2024-12-01
    “…To address the current challenges in balancing wing strength with lightweight structural designs, this study proposed an intelligent solution method for optimizing wing dimensions and structural layout. …”
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  19. 399

    Research on the evaluation model of ecological environment change and its internal driving mechanisms by Rui Xu, Junfeng Deng, Youshan He, Guochen Sui, Xunchang Li, Wei Yang

    Published 2024-12-01
    “…To achieve this, the paper not only analyzes the multifaceted social, economic, and natural aspects of the composite ecosystem but also develops an ecological environment change evaluation model employing the topological hierarchy-entropy weight method. …”
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  20. 400