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Showing 761 - 780 results of 2,280 for search '(( variable function coefficiency. ) OR ( variables function efficient. ))*', query time: 0.23s Refine Results
  1. 761

    Sports Biomechanics Analysis: Assisting Effectiveness Evaluations for Wearable Compliant Elbow Joint Powered Exoskeleton by Huibin Qin, Kai Liu, Zefeng Zhang, Jie Zheng, Zhili Hou, Lina Li, Ruiqin Li

    Published 2025-02-01
    “…Firstly, a powered wearable elbow exoskeleton with variable stiffness is proposed. Through theoretical calculation, the power efficiency formula of exoskeleton is derived. …”
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    Article
  2. 762

    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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  3. 763

    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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  4. 764
  5. 765

    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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    Article
  6. 766

    Matrix Method of Defect Analysis for Structures with Areas of Considerable Stiffness Differences by Monika Mackiewicz, Tadeusz Chyży

    Published 2025-04-01
    “…Unlike traditional FEM discretization, which increases computational time calculations due to mesh refinement in stiffness-variable areas, the proposed method maintains a consistent discretization while adjusting shape functions to reflect internal stiffness changes. …”
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  7. 767

    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. 768

    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. 769

    Energy optimization through morphing blade design under structural constraints: a case study on the NREL 1.5 MW wind turbine by Najafian Arezoo, Jahangirian Alireza

    Published 2025-01-01
    “…The morphing process is modeled using an m-degree shape function and optimized through a Genetic Algorithm (GA) to maximize power generation while minimizing structural displacement and thrust forces. …”
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  10. 770

    Optimization of PLGA-Doxorubicin Hybrid Nanoparticles using Design of Experiments: Synthesis, Characterization, and Applications by Adina TURCU-STIOLICA, Andrei BITA, Maria Viorica CIOCILTEU

    Published 2025-05-01
    “… Background and Aim: Poly (lactic-co-glycolic acid) (PLGA) exhibits a range of advantageous properties, including tunable particle sizes, stability, biodegradability, and the potential for surface functionalization. These characteristics have established PLGA as a widely utilized material in drug delivery systems. …”
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  11. 771

    Control of an autonomous wind energy conversion system based on doubly fed induction generator supplying a non-linear load by M. L’Hadj Said, M. Ali Moussa, T. Bessaad

    Published 2025-07-01
    “…This paper presents a variable speed constant frequency (VSCF) autonomous control system to supply isolated loads (linear or non-linear). …”
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  12. 772

    Exploring the potentials of mango-orange leaf extract as an inhibitor on carbon steel in an acidic medium: Optimization, kinetics, and thermodynamics by Elijah Emeteveke Aghogho, Prosper Eguono Ovuoraye, Innocent Oseribho Oboh, Oluwafemi Osarhiemen Olayebi

    Published 2025-07-01
    “…The effects of optimized variables on corrosion inhibition were examined. The result confirmed optimum inhibition efficiency of 96 % corresponding to MOEx concentration, temperature, and time of 450 ppm, 30 0C, and 3 h recorded at an optimum acid concentration of 1.3 M of H2SO4. …”
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  13. 773
  14. 774

    Novel active-feedback device improves sleep quality in insomnia disorder: a randomized placebo-controlled trial by Antonia Ypsilanti, Maan van de Werken, Anna Robson, Petra Examilioti, Lambros Lazuras, Lambros Lazuras

    Published 2025-05-01
    “…ObjectivesInsomnia disorder is a public health challenge associated with impaired cognitive functioning, reduced quality of life, and adverse mental health outcomes. …”
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  15. 775
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  17. 777

    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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  18. 778

    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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  19. 779

    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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  20. 780

    Cardiovascular autonomic neuropathy in chronic kidney disease: a study of kidney biopsy cases by Hideaki Kuno, Go Kanzaki, Rina Oba, Takaya Sasaki, Kotaro Haruhara, Kentaro Koike, Nobuo Tsuboi, Takashi Yokoo

    Published 2024-12-01
    “…Abstract Background The interplay between cardiac and kidney functions is mediated by the autonomic nervous system. …”
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