Showing 6,741 - 6,760 results of 6,894 for search '"Nonlinearity"', query time: 0.08s Refine Results
  1. 6741

    Association between geriatric nutritional risk index and overactive bladder in the elderly population: a cross-sectional study by Wei Zheng, Wei Zheng, Chuanzan Zhou, Jia Miao, Yunkai Yang, Xuanhan Hu, Heng Wang, Xinyu Zhang, Qi Zhang, Yifan Wang

    Published 2025-02-01
    “…The study revealed that inflammatory response mediates the relationship between GNRI and OAB, while cognitive function has a relatively weaker influence on the strength of the association between GNRI and OAB.ConclusionGNRI serves as a reliable predictive marker for OAB in the elderly population, demonstrating a nonlinear inverse correlation with OAB prevalence. …”
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  2. 6742

    Thermal radiation effects of ternary hybrid nanofluid flow in the activation energy: Numerical computational approach by Hakeem Ullah, Syed Arshad Abas, Mehreen Fiza, Aasim Ullah Jan, Ali Akgul, Magda Abd El-Rahman, Seham M. Al-Mekhlafi

    Published 2025-03-01
    “…Methodology: After utilizing von Karman similarity transformations to renovate the principal equations into the set of nonlinear differential equation systems, the resulting equations were solved using the bvp4c numerical approach with the assistance of MATLAB software. …”
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  3. 6743

    A quasi affine transformation evolution algorithm with evolution matrix selection operation for parameter estimation of proton exchange membrane fuel cells by Mohammad Aljaidi, Pradeep Jangir, Sunilkumar P. Agrawal, Sundaram B. Pandya, Anil Parmar, Samar Hussni Anbarkhan, Laith Abualigah

    Published 2025-01-01
    “…It is challenging to find the best PEMFC parameters because the model is complex and the problem is nonlinear; not all optimization algorithms can solve this problem. …”
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  4. 6744

    Association between fasting blood glucose and psychotic symptoms in Chinese patients with first-episode drug-naïve major depressive disorder by Xingzhi Xia, Hanxu Deng, Wei Ren, Lin Yang, Yingzhao Zhu, Yaozhi Liu, Junjun Liu, Xueli Zhao, Fengnan Jia, Xiangdong Du, Xiangyang Zhang

    Published 2025-01-01
    “…Conclusions Our investigation revealed a nonlinear relationship between FBG and PD in patients with FEDN MDD, thereby informing more effective intervention strategies for managing psychotic symptoms in individuals with depression.…”
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  5. 6745

    MHD radiative mixed convective flow of a sodium alginate-based hybrid nanofluid over a convectively heated extending sheet with Joule heating by Yasmin Humaira, Bossly Rawan, Alduais Fuad S., Al-Bossly Afrah, Saeed Anwar

    Published 2025-01-01
    “…The physical phenomena are modeled in a nonlinear partial differential equation, which is then converted into ordinary differential equations with the help of suitable similarity variables. …”
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  6. 6746

    Sustainable foam glass property prediction using machine learning: A comprehensive comparison of predictive methods and techniques by Mohamed Abdellatief, Leong Sing Wong, Norashidah Md Din, Ali Najah Ahmed, Abba Musa Hassan, Zainah Ibrahim, G. Murali, Kim Hung Mo, Ahmed El-Shafie

    Published 2025-03-01
    “…Data preprocessing involved Pearson correlation analysis to address multicollinearity and reveal nonlinear relationships among variables. Model performance was evaluated through R-values, mean absolute error, and root mean square error metrics, demonstrating that the GPR model achieved superior prediction accuracy with R-values of 0.91 and 0.82 for porosity and CS, respectively. …”
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  7. 6747

    New Solitary Wave Solutions of the Lakshamanan–Porsezian–Daniel Model with the Application of the Φ<sup>6</sup> Method in Fractional Sense by Hicham Saber, Hussien Albala, Khaled Aldwoah, Amer Alsulami, Khidir Shaib Mohamed, Mohammed Hassan, Abdelkader Moumen

    Published 2024-12-01
    “…This paper explores a significant fractional model, which is the fractional Lakshamanan–Porsezian–Daniel (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="script">FLPD</mi></semantics></math></inline-formula>) model, widely used in various fields like nonlinear optics and plasma physics. An advanced analytical solution for it is attained by the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi mathvariant="sans-serif">Φ</mi><mn>6</mn></msup></semantics></math></inline-formula> technique. …”
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  8. 6748

    Characterization and optimization of cerium oxide nanoparticle-doped cellulose acetate films using the Box-Behnken Design by Lívia Viana Aguiar de Oliveira, Noemi Raquel Checca Huaman, Sergio Neves Monteiro, Ulisses Oliveira Costa, Letícia Vitorazi

    Published 2025-03-01
    “…The films exhibited enhanced UV absorption, with CeO₂ increasing absorbance at 316 nm, while PEG influenced a nonlinear absorption response at 211 nm. XRD, TEM, and SAED confirmed the high crystallinity of CeO₂, while EELS revealed Ce³⁺/Ce⁴⁺ oxidation states and oxygen vacancies, contributing to UV absorption. …”
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  9. 6749
  10. 6750
  11. 6751

    An Approach to Reduce Tuning Sensitivity in the PIC-Based Optoelectronic Oscillator by Controlling the Phase Shift in Its Feedback Loop by Vladislav Ivanov, Ivan Stepanov, Grigory Voronkov, Ruslan Kutluyarov, Elizaveta Grakhova

    Published 2024-12-01
    “…The analytical model developed in this study calculates the OEO’s output frequency while accounting for nonlinear errors, enabling the consideration of various control schemes. …”
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  12. 6752

    Exploring the impact of APOE ɛ4 on functional connectivity in Alzheimer’s disease across cognitive impairment levels by Kangli Dong, Wei Liang, Ting Hou, Zhijie Lu, Yixuan Hao, Chenrui Li, Yue Qiu, Nan Kong, Yan Cheng, Yaqi Wen, Wanyin Ma, Wenbin Zheng, Jitian Guan, Yan Lin, Kai Huang, Lu Zhang, Siya Chen, Xiangyuan Ma, Renhua Wu, Naili Wei

    Published 2025-01-01
    “…Importantly, the GNN-Explainer method was introduced as an enhancement over the NBS method to better model complex high-order nonlinear characteristics for discovering FC features that significantly contribute to classification tasks. …”
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  13. 6753

    Equalizer Design: HBOA-DE-trained radial basis function neural networks by Santosh Kumar Das, Satya Ranjan Pattanaik, Pradyumna Kumar Mohapatra, Saroja Kumar Rout, Abdulaziz S. Almazyad, Muhammed Basheer Jasser, Guojiang Xiong, Ali Wagdy Mohamed

    Published 2025-03-01
    “…As a further step in the evaluation of the HBOA-DE-based RBFNN equalizer, three non-linear channels and adding different nonlinearities have been simulated. The proposed algorithm is compared with well-known algorithms in terms of Mean Square Error (MSE) and Bit Error Rate (BER). …”
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  14. 6754

    Impact of ambient temperatures on Alzheimer's disease and other dementia mortality among elderly patients aged 60 years and older in China by Rui Zhang, Lu Sun, Ai-Nan Jia, Si-Yuan Wu, Yu Wang, Song-Wang Wang, Qing Guo, Yu-Jie Meng, Juan Liang, Wan Huang, Yong-Hong Li, Jing Wu

    Published 2024-12-01
    “…Using an individual-level time-stratified case-crossover study design, the relationships between ambient temperatures and AD and other dementia mortality were quantified using conditional logistic regression combined with the distributed lag nonlinear model. In addition, the attributable fractions (AFs) of mortality due to non-optimal ambient temperatures were calculated. …”
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  15. 6755

    A Comparative Study of Machine Learning Techniques for Predicting Mechanical Properties of Fused Deposition Modelling (FDM)-Based 3D-Printed Wood/PLA Biocomposite by Prashant Anerao, Atul Kulkarni, Yashwant Munde, Namrate Kharate

    Published 2025-08-01
    “…Given the intricate nature of the dataset and the presence of nonlinear relationships between parameters, XGBoost and AdaBoost exhibited exceptional performance. …”
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  16. 6756

    Correlation of dietary inflammation index with sarcopenia in patients with chronic kidney disease based on the NHANES database by Ma Xiao-yan, Yao Rui, Ni Lin, Dai Jing-jing

    Published 2025-01-01
    “…Restricted cubic spline plots (RCS) were used to analyze a nonlinear relationship between DII and sarcopenia.ResultsA total of 1,660 CKD patients were included in this study. …”
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  17. 6757

    Comparison of principal component analysis algorithms for imputation in agrometeorological data in high dimension and reduced sample size. by Valter Cesar de Souza, Sergio Augusto Rodrigues, Luís Roberto Almeida Gabriel Filho

    Published 2024-01-01
    “…The aim of this study was to evaluate the performance of alternative multivariate procedures for principal component analysis (PCA), using the Nonlinear Iterative Partial Least Squares (NIPALS) and Expectation-Maximization (EM) algorithms, for imputing missing data in time series of meteorological variables. …”
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  18. 6758

    The association of perirenal adipose tissue accumulation with left ventricular hypertrophy and the mediating role of insulin resistance: a cross-sectional study involving 1112 indi... by Wei Wang, Yang Chen, Xiu Ping Qiu, Xiu Li Guo

    Published 2025-01-01
    “…A linear correlation of LVH risk with PrFT and TG/HDL-c was observed from RCS analysis (P for nonlinear and overall&lt; 0.001). Moreover, TG/HDL-c mediated 13.4% of the association between PrFT and LVMI, and 8.5% between PrFT and LVH.ConclusionIncreased PAT accumulation contributes to an independent variable for LVH, with insulin resistance acting as a mediating variable in this relationship.…”
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  19. 6759

    A Low Complexity Dual-Phase Alternating Scheme is Used With the PTS Method to Reduce PAPR for B5G Systems by Yung-Ping Tu, Chen-Wei Hsu

    Published 2025-01-01
    “…Of course, our proposed method&#x2019;s bit error rate (BER) consistently outperforms the original waveform due to a valid PAPR reduction that weakens nonlinear distortion from the power amplifier.…”
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  20. 6760