Showing 6,381 - 6,400 results of 6,894 for search '"nonlinear"', query time: 0.10s Refine Results
  1. 6381

    Mathematical Modelling and Analysis of Transmission Dynamics of Lassa Fever by E. A. Bakare, E. B. Are, O. E. Abolarin, S. A. Osanyinlusi, Benitho Ngwu, Obiaderi N. Ubaka

    Published 2020-01-01
    “…In this work, a periodically forced seasonal nonautonomous system of a nonlinear ordinary differential equation is developed that captures the dynamics of Lassa fever transmission and seasonal variation in the birth of Mastomys rodents where time was measured in days to capture seasonality. …”
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  2. 6382

    A New Precursor Integral Method for Solving Space-Dependent Kinetic Equations in Neutronic and Thermal-Hydraulic Coupling System by Yingjie Wu, Baokun Liu, Han Zhang, Jiong Guo, Fu Li, Jinlin Niu, Yizhen Wang, Menglei Cui

    Published 2020-01-01
    “…The accurate prediction of the neutronic and thermal-hydraulic coupling system transient behavior is important in nuclear reactor safety analysis, where a large-scale nonlinear coupling system with strong stiffness should be solved efficiently. …”
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  3. 6383

    Classification and Recognition Method for Bearing Fault based on IFOA-SVM by Wei Zhang, Zhihua Ma

    Published 2021-02-01
    “…In order to identify the nonlinear classification of bearing fault features more accurately, a fault identification method based on IFOA-SVM is proposed. …”
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  4. 6384

    Association between the triglyceride-glucose index and liver fibrosis in adults with metabolism-related fatty liver disease in the United States: a cross-sectional study of NHANES... by Yuou Ying, Yuan Ji, Ruyi Ju, Jinhan Chen, Mingxian Chen

    Published 2025-01-01
    “…A restricted cubic spline (RCS) model was used to explore nonlinear effects, and receiver operating characteristic (ROC) curves were applied to evaluate the effectiveness in predicting. …”
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    Article
  5. 6385

    Construction and Optimization of Integrated Yield Prediction Model Based on Phenotypic Characteristics of Rice Grown in Small–Scale Plantations by Jihong Sun, Peng Tian, Zhaowen Li, Xinrui Wang, Haokai Zhang, Jiangquan Chen, Ye Qian

    Published 2025-01-01
    “…Although machine learning can handle complex nonlinear problems to enhance prediction accuracy, further improvements in models are still needed to accurately predict rice yields in small areas facing complex planting environments, thereby enhancing model performance. …”
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    Article
  6. 6386

    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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  7. 6387

    The Relationship Between Novel Inflammatory Markers and Serum 25‐Hydroxyvitamin D Among US Adults by Hang Zhao, Yangyang Zhao, Yini Fang, Weibang Zhou, Wenjing Zhang, Jiecheng Peng

    Published 2025-01-01
    “…To further explore the relationship between the two, we applied smooth curve fittings and generalized additive models. Upon detecting nonlinear relationships, we used a recursive algorithm to pinpoint the inflection point. …”
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  8. 6388

    River water quality monitoring using machine learning with multiple possible in-situ scenarios by Dani Irwan, Saerahany Legori Ibrahim, Sarmad Dashti Latif, Chris Aaron Winston, Ali Najah Ahmed, Mohsen Sherif, Amr H. El-Shafie, Ahmed El-Shafie

    Published 2025-06-01
    “…Furthermore, many water quality factors have complex nonlinear relationships that are difficult for these methods to handle. …”
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  9. 6389

    Associations between neutrophil percentage to albumin ratio and rheumatoid arthritis versus osteoarthritis: a comprehensive analysis utilizing the NHANES database by Wenquan Ding, Rui La, Shenghao Wang, Zhiyuan He, Dinghua Jiang, Zhigang Zhang, Hao Ni, Wu Xu, Lixin Huang, Qian Wu, Qian Wu

    Published 2025-01-01
    “…Further analyses using curve fitting and threshold effect models revealed a nonlinear association between NPAR and RA, with an inflection point identified at 15.56.ConclusionHigh levels of NPAR is positively associated with the prevalence of RA. …”
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  10. 6390
  11. 6391

    Shorter Digestion Times of Donor Islets Is Associated With Better Islet Graft Function After Islet Transplantation by Chia-Hao Wang, Christopher Orr, Jeannette Hacker-Stratton, Mohamed El-Shahawy, Keiko Omori, Meirigeng Qi, Fouad Kandeel

    Published 2025-01-01
    “…We previously developed a method that calculated the islet graft function index (GFI) and a patient’s predicted insulin requirement (PIR) using mathematical nonlinear regression. Both PIR and GFI could be used by physicians as tools to monitor islet graft function and to guide supplementing the patient with exogenous insulin to prevent beta-cell exhaustion. …”
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  12. 6392

    Dye-based fluorescent organic nanoparticles made from polar and polarizable chromophores for bioimaging purposes: a bottom-up approach by Daniel, Jonathan, Dal Pra, Ophélie, Kurek, Eleonore, Grazon, Chloé, Blanchard-Desce, Mireille

    Published 2024-04-01
    “…Their luminescence can be tuned in the whole visible region down to the Near Infra-Red I (NIR-I) region while their nonlinear optical responses can be enhanced thanks to cooperative effects. …”
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  13. 6393

    L-shaped association between dietary iron intake and HPV infection: a cross-sectional analysis based on national health and nutrition examination survey 2005–2016 by Xiaotong Chen, Haiwei Chen, Yuling Chen, Lixin Tang, Jiaqi Liu, Yu-Hua Ou

    Published 2025-02-01
    “…Additionally, we implemented smooth curve fitting and threshold effect analysis, to delineate the complex, nonlinear association between iron intake and HPV infection. …”
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  14. 6394
  15. 6395

    Three-dimensional electrical structure in the northwestern sector of the Sichuan-Yunnan diamond block by Yunyun Zhang, Yunyun Zhang, Yunyun Zhang, Xiaobin Chen, Xiaobin Chen, Peijie Wang, Juntao Cai, Juntao Cai, Zhongyin Liu, Zhongyin Liu, Jiong Zhang, Jiong Zhang, Xingxing Huang, Xingxing Huang

    Published 2025-01-01
    “…Our study conducted a magnetotelluric profile from Chazha to Luomai across the geological boundary of the Sichuan-Yunnan block in its northwest sector. Using the nonlinear conjugate gradient three-dimensional inversion method, we obtained the deep electrical structure across the northern part of the block. …”
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  16. 6396

    Genetic Profile and Associated Characteristics of 150 Korean Patients with Retinitis Pigmentosa by You Na Kim, Yoon Jeon Kim, Chang Ahn Seol, Eul-Ju Seo, Joo Yong Lee, Young Hee Yoon

    Published 2021-01-01
    “…The best-corrected visual acuity (BCVA) deterioration and photoreceptor disruption progression rates were determined based on the major causative mutational genes using nonlinear mixed models, and the differences among them were investigated using the interaction effect. …”
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  17. 6397

    Exploring the Association Between Triglyceride-Glucose Indices and Their Derivatives With Obstructive Sleep Apnea: Insights From the National Health and Nutrition Examination Surve... by Zhou Y, Xue F

    Published 2025-01-01
    “…TyG showed a linear relationship with OSA, while TyG-BMI, TyG-WC, and TyG-WHtR exhibited nonlinear relationships. The diagnostic capability was highest for TyG-WC, with an AUC of 0.647.Conclusion: The study confirms strong associations between OSA and the TyG indices, particularly TyG-WC, which demonstrates significant predictive power for OSA risk. …”
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  18. 6398

    SSVEP Enhancement in Mixed Reality Environment for Brain–Computer Interfaces by Jieyu Wu, Feng He, Xiaolin Xiao, Runyuan Gao, Lin Meng, Xiuyun Liu, Minpeng Xu, Dong Ming

    Published 2025-01-01
    “…The results of an offline experiment showed that the background and stimulus colors had a significant interaction effect that can impact system performance. A possible nonlinear relationship between CCR value and SSVEP detection accuracy exists. …”
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  19. 6399

    Advanced perspective on heavily phosphorus-doped diamond layers via optical emission spectroscopy by Kil-dong Sung, Stefan Andrei Irimiciuc, Michal Novotný, Zdeněk Weiss, Pavel Hubík, Jaromír Kopeček, Martin Vondráček, Vincent Mortet

    Published 2025-01-01
    “…At lower [PH3]/[H2], [P] did not scale proportionally with [PH3]/[CH4], exhibiting nonlinear behavior due to phosphorus contamination (Pcont.) in the reaction chamber, which provided sufficient PHx radicals to grow heavily PDD without PH3 gas flow. …”
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  20. 6400