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6381
Mathematical Modelling and Analysis of Transmission Dynamics of Lassa Fever
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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6382
A New Precursor Integral Method for Solving Space-Dependent Kinetic Equations in Neutronic and Thermal-Hydraulic Coupling System
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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6383
Classification and Recognition Method for Bearing Fault based on IFOA-SVM
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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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...
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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6385
Construction and Optimization of Integrated Yield Prediction Model Based on Phenotypic Characteristics of Rice Grown in Small–Scale Plantations
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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6386
Thermal radiation effects of ternary hybrid nanofluid flow in the activation energy: Numerical computational approach
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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6387
The Relationship Between Novel Inflammatory Markers and Serum 25‐Hydroxyvitamin D Among US Adults
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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6388
River water quality monitoring using machine learning with multiple possible in-situ scenarios
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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6389
Associations between neutrophil percentage to albumin ratio and rheumatoid arthritis versus osteoarthritis: a comprehensive analysis utilizing the NHANES database
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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6390
Intraspinal Transplantation of the Adipose Tissue-Derived Regenerative Cells in Amyotrophic Lateral Sclerosis in Accordance with the Current Experts’ Recommendations: Choosing Opti...
Published 2018-01-01“…It is not only due to a limited number of studies, small treatment groups, and fast but nonlinear disease progression but also due to lack of objective methods able to show subtle clinical changes. …”
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6391
Shorter Digestion Times of Donor Islets Is Associated With Better Islet Graft Function After Islet Transplantation
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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6392
Dye-based fluorescent organic nanoparticles made from polar and polarizable chromophores for bioimaging purposes: a bottom-up approach
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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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
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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6394
Second order slip micropolar MHD hybrid nanofluid flow over a stretching surface with uniform heat source and activation energy: Numerical computational approach
Published 2025-03-01“…The resulting higher-order nonlinear ODEs are solved numerically using the bvp4c technique in MATLAB. …”
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6395
Three-dimensional electrical structure in the northwestern sector of the Sichuan-Yunnan diamond block
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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6396
Genetic Profile and Associated Characteristics of 150 Korean Patients with Retinitis Pigmentosa
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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6397
Exploring the Association Between Triglyceride-Glucose Indices and Their Derivatives With Obstructive Sleep Apnea: Insights From the National Health and Nutrition Examination Surve...
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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6398
SSVEP Enhancement in Mixed Reality Environment for Brain–Computer Interfaces
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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6399
Advanced perspective on heavily phosphorus-doped diamond layers via optical emission spectroscopy
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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6400
Thermal characteristics of hybrid Nanofluid (Cu-Al2O3) flow through Darcy porous medium with chemical effects via numerical successive over relaxation technique
Published 2025-01-01“…Then the successive over relaxation technique is utilized to numerically solve the nonlinear equations. The findings are summarized in a graphical and tabular format. …”
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