Showing 781 - 800 results of 2,280 for search '(( variable function (coefficiency. OR coefficiency.) ) OR ( variables function efficiency. ))', query time: 0.16s Refine Results
  1. 781

    On the Generalized Inverse Gaussian Volatility in the Continuous Ho–Lee Model by Roman V. Ivanov

    Published 2025-04-01
    “…The obtained formulas are determined by the values of the Humbert confluent hypergeometric function of two variables. A numerical experiment shows that the third and fourth moments of the bond prices differentiate substantially in the continuous Ho–Lee and GIG continuous Ho–Lee models.…”
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  2. 782

    Simplified Model Characterization and Control of an Unmanned Surface Vehicle by Aldo Lovo-Ayala, Roosvel Soto-Diaz, Carlos Andres Gutierrez-Martinez, Jose Fernando Jimenez-Vargas, Javier Jiménez-Cabas, Jose Escorcía-Gutierrez

    Published 2025-04-01
    “…Two models were built, one based on a transfer function matrix and another based on state variables, and from these models, two control strategies were developed. …”
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  3. 783
  4. 784

    Adsorption of Congo Red Dye from Aqueous Solution onto Natural and Modified Bauxite Clays by Baghdad Science Journal

    Published 2017-03-01
    “…Both bauxite and modified bauxite are primarily characterized by using, FTIR, SEM, AFM, and XRD. Several variables are studied as a function of adsorption including contact time, adsorbent weight, pH, ionic strength, particle size and temperature under batch adsorption technique. …”
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  5. 785
  6. 786

    Spatiotemporal Evolution and Multi-Driver Dynamics of Sea-Level Changes in the Yellow–Bohai Seas (1993–2023) by Lujie Xiong, Fengwei Wang, Yanping Jiao, Yunqi Zhou

    Published 2025-05-01
    “…Temporal and spatial variations were examined through nonlinear least squares fitting to capture interannual variability and decadal amplitude distributions. Empirical orthogonal function (EOF) analysis identified the first three modes, explaining 90.40%, 2.78%, and 1.47% of the total variance, respectively, and their spatial patterns and temporal coefficients were derived. …”
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  7. 787

    Reliability and Accuracy of Ultrasonographic Muscle Thickness Measurements: Evaluating Key Postural Stabilisers in Rehabilitation by Arkadiusz Żurawski, Natalia Barańska, Aleksandra Tomala, Edyta Majorczyk, Joanna Macierzyńska

    Published 2025-05-01
    “…Its capacity to provide real-time visualisation of muscle structure and function underpins its utility in clinical practice and scientific research. …”
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  8. 788

    STRUCTURAL RELIABILITY OPTIMIZATION DESIGN OF REINFORCED SHELL STRUCTURE BASED ON ADAPTIVE SURROGATE MODEL by LIU Yuzhuo, CAO Lixiong, WU Jianguo, LI Haibo

    Published 2025-02-01
    “…Reinforced shell structure is widely used in aerospace load-bearing structures because its high specific stiffness and specific strength.By considering the uncertainty and risk factors in the structural parameters, the reliability-based design optimization (RBDO) can avoid the overly conservative design of the structure and ensure its reliability and safety.An efficient RBDO method based on adaptive surrogate model was proposed to solve the problem of lightweight design of reinforced shell structure under buckling reliability constraints.The adaptive addition of sample points was implemented through the expected feasibility function criterion, and the discrete variables was continued by constructing piecewise functions.This increases optimization efficiency while ensuring the reliability of design results.Finally, the effectiveness of the proposed method is verified by comparing the RBDO results with the deterministic optimization results.…”
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  9. 789

    Incorporating Neutrosophic Uncertainty in Data Envelopment Analysis by A.Almutairi, Hamiden Abd El- Wahed Khalifa, Basma E. El- Demerdash

    Published 2025-02-01
    “…In the realm of Data Envelopment Analysis (DEA), the assessment of relative efficiency has historically relied on deterministic variables. …”
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  10. 790
  11. 791
  12. 792

    Comparing Upper Limb Performance Between Women and Men in CrossFit: Associations with FMS, Davis, and Dash Tests by Sabikeh Moghaddamnezhad, Abdolrasoul Daneshjoo

    Published 2024-03-01
    “…As the data were not normally distributed, Spearman's correlation coefficient was used to examine the relationships between variables. …”
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  13. 793

    Effect of drought disturbance in a sclerophyll forest on the micromammal community in the Río Clarillo National Park, Metropolitan Region, Chile by Susan Fletcher, Carlos Sarmiento, Gisela C. Stotz, Verónica Quirici

    Published 2025-01-01
    “…Community indices such as Shannon–Wiener and Pielou were calculated. The Coefficient of Variation was used to study functional diversity for each trait separately. …”
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  14. 794

    The Relationship between Core Stability Muscles Isometric Strength and Endurance with the Postural Control and Walking Endurance in Patients with Multiple Sclerosis by Behnam Moradi, Seyed Sadreddin Shojaedin

    Published 2018-06-01
    “…On the other hand, no significant relationship was found between core muscles isometric tests with 6-minute with walk functional among the patients multiple sclerosis. Conclusion: Despite the significant relationship between core muscles isometric strength and endurance in patients MS on one of the functional capability variables (balance), it should be stated that taking advantage of other methods (dynamic methods and methods like Electromyography) is required in order to achieve more verified and certain results.…”
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  15. 795

    Sensitivity Analysis of Distribution Network Reconfiguration Optimization for Electric Vehicle and Renewable Distributed Generator Integration by Mahmoud Ghofrani

    Published 2025-04-01
    “…This approach aims to minimize power losses and enhance overall operational efficiency. To model the variability of wind and solar DGs, probability distribution functions (PDFs) are employed, which allow for a more accurate representation of their performance. …”
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  16. 796

    Principles of research of soil ped deformation at interaction with machine working element by V. I. Kravchuk, V. P. Davydyuk

    Published 2016-02-01
    “…Research of systems of analytical models of the second order with variable coefficients in partial derivatives with a set of input and output parameters can be effectively realized by numerical methods with use of the special varargin and varargout functions. …”
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  17. 797

    Percepción de la relación deporte-política desde las funciones de la economía política (Perception of the sport-politics relationship from the functions of political economy) by José Ramón Sanabria Navarro, Yahilina Silveira Pérez, William Alejandro Niebles Núñez

    Published 2024-10-01
    “…Quantitative research was using a sample of 321 persons the sports sector in the departments of Córdoba and Sucre in Colombia. The measured variables included functions of political economy, production relationships, means of production, and productive forces associated with the sports sector. …”
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  18. 798

    Intrarater reliability of the Abilitator—a self-report questionnaire on work ability and functioning aimed at the population in a weak labour market position: a test–retest study... by Anne Kouvonen, Matti Joensuu, Miia Wikström

    Published 2021-12-01
    “…A statistically significant difference was observed in the summary scale for social functioning (t=−2.01, p=0.049). Agreement was observed for all variables except social functioning. …”
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  19. 799

    A metaheuristic optimization framework inspired by virus mutations and its ability to optimize the structural design of 2D and 3D steel frames compared to other methods by Mehdi Ghasri, Hamid Reza Karimi, Abdolhamid Salarnia

    Published 2025-06-01
    “…MVPO integrates population-based exploration, simulating viral spread through intra-community interactions (guided by wavelet functions to model transmission variability) and inter-community propagation, with a two-phase mutation strategy: the first phase enhances global exploration via elongated search steps during accelerated spread, while the second phase introduces structural perturbations to escape local optima. …”
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