Showing 6,761 - 6,780 results of 6,894 for search '"Nonlinearity"', query time: 0.06s Refine Results
  1. 6761

    Spatiotemporal Evolution and Driving Mechanisms of kNDVI in Different Sections of the Yangtze River Basin Using Multiple Statistical Methods and the PLSPM Model by Zhenjiang Wu, Fengmei Yao, Adeel Ahmad, Fan Deng, Jun Fang

    Published 2025-01-01
    “…In contrast, the kernel NDVI (kNDVI) demonstrates significant advantages in suppressing background noise and improving saturation thresholds through nonlinear kernel transformation, thereby enhancing sensitivity to vegetation changes. …”
    Get full text
    Article
  2. 6762

    Petrophysical Regression regarding Porosity, Permeability, and Water Saturation Driven by Logging-Based Ensemble and Transfer Learnings: A Case Study of Sandy-Mud Reservoirs by Shenghan Zhang, Yufeng Gu, Yinshan Gao, Xinxing Wang, Daoyong Zhang, Liming Zhou

    Published 2022-01-01
    “…From a general review, most petrophysical models applied for the conventional logging interpretation imply that porosity, permeability, or water saturation mathematically have a linear or nonlinear relationship with well logs, and then arguing the prediction of these three parameters actually is accessible under a regression of logging sequences. …”
    Get full text
    Article
  3. 6763
  4. 6764

    Optimal exercise dose on Body Mass Index (BMI) in children and adolescents with overweight and obesity: a systematic review and bayesian model-based network meta-analysis by Zan Huang, Gang Sun, Jiayu Li, Bin Zhang, Guangping Lai, Hongwei Jing, Yulan Zhou

    Published 2025-01-01
    “…There was an ‘L’-shaped nonlinear dose-response relationship between total exercise dose and BMI, with 200 METs-min/day identified as the minimum exercise dose required to achieve a clinically meaningful reduction in BMI. …”
    Get full text
    Article
  5. 6765

    Impact of neutrophil percentage-to-albumin ratio on mortality in iron-deficiency anemia patients: a retrospective study using MIMIC-IV database by Weide Lin, Junfan Chen, Xufa Peng, Yaohua Yu, Shiqing Huang, Shurong Li, Bixia Lin

    Published 2025-01-01
    “…Through multivariate Cox regression analysis, the relationship between NPAR levels and 30-day and 365-day mortality risks was assessed, and restricted cubic splines (RCS) models were used to explore potential nonlinear relationships. Additionally, an inflection point analysis was conducted to evaluate the potential of NPAR levels in predicting short- and long-term mortality risks. …”
    Get full text
    Article
  6. 6766

    Dynamic Interrelation between Aggregated Revenues and Expenditures of Regional-Level Budgets of Federal States: A Time-Frequency Approach to Analysis by Alan K. Karaev, Oksana S. Gorlova, Vadim V. Ponkratov, Margarita L. Vasyunina, Andrey I. Masterov, Hongor N. Zambaev, Lolita H. Gueva

    Published 2024-07-01
    “…The theoretical significance of the study lies in the substantiation that continuous wavelet analysis is a powerful tool for studying the nonlinear relationship between revenues and expenditures, since understanding the causalities between revenues and expenditures on various time scales is significant for choosing measures aimed at maintaining the budget sustainability of the federal constituent entities. …”
    Get full text
    Article
  7. 6767

    High Body Roundness Index Is Associated With Unhealthy Sleep Patterns: Insights From NHANES (2007–2014) by Pingchuan Liu, Yuding Luo, Xing He, Jiali Zhang, Fanzhou Ren, Bingyang Zhang, Bo Zheng, Jian Wang

    Published 2025-01-01
    “…The RCS analysis found that the nonlinear association between BRI and unhealthy sleep patterns was not significant. …”
    Get full text
    Article
  8. 6768

    Numerical Simulation of Multi-point Corona Discharge Characteristics in Thunderstorms by Xu Dewang, Tan Yongbo

    Published 2025-01-01
    “…If the point does not release a corona charge, the suppression electric field at the point is nonlinearly related to the environmental electric field. …”
    Get full text
    Article
  9. 6769

    Association between Chinese visceral adiposity index and lower urinary tract symptoms suggestive of benign prostatic hyperplasia (LUTS/BPH): a national cohort study by Kunhui Chang, Bo Li, Gang Wang, Hao Zhou, Yonghao Chen, Hongbing Gu

    Published 2025-01-01
    “…The study highlighted a nonlinear relationship between LUTS/BPH and several obesity-related indices, including CVAI. …”
    Get full text
    Article
  10. 6770

    Association between body esteem and sugar-sweetened beverage intake among Chinese undergraduate students: a cross-sectional study by Jiawen Zhu, Yuanyuan Zhu, Zihe Zhao, Qianling Huang, Changju Liu, Zhi Zeng

    Published 2025-01-01
    “…Restricted cubic spline plots showed no non-linear associations between any dimensions of body esteem and the risk of high sugar-sweetened beverage intake (p-nonlinear was 0.912, 0.225, 0.109, respectively). Subgroup analyses revealed no significant interactions.ConclusionThese findings underscored the significance of targeted health promotion strategies and provided references for educational institutions or governmental bodies to steer undergraduate beverage consumption toward healthier patterns.…”
    Get full text
    Article
  11. 6771

    Mechanical Response of Industrial Concrete with SFRC and PFRC by José Ángel Ortíz-Lozano, Silvia Rodríguez-Narciso, Julián Carrillo, Juan Antonio Hernández-Andrade, Jesús Pacheco-Martínez, Martín Hernández-Marín, Albert de la Fuente-Antequera

    Published 2022-01-01
    “…In the second stage, statistical analysis and modeling with nonlinear analysis were used to evaluate the results, where residual strength improved but Poisson’s ratio decreased when the dosage of fibers was increased.…”
    Get full text
    Article
  12. 6772

    Oxidative stress and retinopathy: evidence from epidemiological studies by Xiangliang Liu, Yu Chang, Yuguang Li, Yingrui Liu, Wei Song, Jin Lu, Naifei Chen, Jiuwei Cui

    Published 2025-01-01
    “…RCS analysis showed a significant overall association between higher OBS and reduced retinopathy risk, without a nonlinear pattern. In participants with retinopathy, higher OBS was linked to a 60% reduction in all-cause mortality (HR 0.40, 95% CI 0.24–0.66, P < 0.001). …”
    Get full text
    Article
  13. 6773

    Association between polycyclic aromatic hydrocarbons exposure and current asthma: a population-based study by Zhou Jin, Wen Sun, Guangfa Wang

    Published 2025-01-01
    “…Methods This cross-sectional study utilized data from the National Health and Nutrition Examination Survey (NHANES) from 2007 to 2016 and employed multifactor logistic regression, subgroup analyses, and smoothed curve fitting to examine the linear and nonlinear associations between PAHs and current asthma. …”
    Get full text
    Article
  14. 6774

    Interactive effects of atmospheric oxidising pollutants and heat waves on the risk of residential mortality by Nan Ren, Huimin Huang, Baoying Liu, Chuancheng Wu, Jianjun Xiang, Quan Zhou, Shuling Kang, Xiaoyang Zhang, Yu Jiang

    Published 2024-12-01
    “…We then applied a generalised additive model, distributed lagged nonlinear model, and bivariate three-dimensional model to investigate the effects and interactions of various atmospheric oxidising pollutants and heat waves on the risk of residential mortality. …”
    Get full text
    Article
  15. 6775

    Association of sleep duration and sleep disorders with post-stroke depression and all-cause and cardiovascular disease mortality in US stroke survivors: results from NHANES 2005–20... by Weirong Chen, Yingying Shen, Shina Song, Xiaofeng Li

    Published 2025-01-01
    “…Restricted cubic spline modeling suggested that sleep duration was nonlinearly and linearly associated with post-stroke depression and all-cause mortality, respectively. …”
    Get full text
    Article
  16. 6776

    Association Between Dietary Inflammatory Index and Triglyceride Glucose-Body Mass Index with Iron Deficiency in Reproductive Age Women: Evidence from NHANES 2005-2018 by Ding J, Xu Z, Liang R, Xie S

    Published 2025-02-01
    “…RCS analysis indicated that the relationships were mostly linear (P-overall < 0.05, P-nonlinear > 0.05). Furthermore, TyG-BMI mediated 5.19%, 12.83%, and 5.63% of the associations between DII and ID, Ferritin, and transferrin receptor (TfR), respectively.Conclusion: The findings suggest that targeted interventions to enhance dietary practices, nutritional intake, and overall metabolic well-being may result in substantial amelioration of ID among reproductive women.Keywords: iron deficiency, reproductive women, dietary inflammatory index, triglyceride glucose-body mass index, insulin resistance…”
    Get full text
    Article
  17. 6777

    The association between neutrophil to high-density lipoprotein cholesterol ratio and gallstones: a cross-sectional study by Yinkang Wang, Xingchen Shang, Yinchao Zhang, Yu Zhang, Wei Shen, Qian Wu, Wenyi Du

    Published 2025-01-01
    “…The restricted cubic curve (RCS) had a P-Nonlinear = 0.481, suggesting that the relationship was a near-linear one. …”
    Get full text
    Article
  18. 6778

    The influence of baseline platelet on mortality risk in stroke and cancer patients: a cross-sectional analysis of the NHANES database by Yuqi Pei, Wei Ouyang, Peiyun Qi, Zhongjie Yan, Yaoru Li, Xiangjian Zhang, Cong Zhang, Lili Cui

    Published 2025-01-01
    “…The RCS analysis demonstrated a linear relationship between platelet and mortality (nonlinear, p = 0.352). Mortality in higher-platelet group (> 209 × 109/L, n = 57) was decreased than lower-platelet group (≤ 209 × 109/L, n = 56) (Model 1 HR 0.43, 95% CI 0.24—0.77, p = 0.005) (Model 2 HR 0.58, 95% CI 0.35—0.96, p = 0.03). …”
    Get full text
    Article
  19. 6779

    Association of pan-immune inflammation value and lung health in adults by Ya Lin, Xiao Lin, Chufan Ren, Lanlan Song, Chao Gu

    Published 2025-01-01
    “…Moreover, lung function indicators (FEV1, FEV1%, FVC, FVC%, FEV1/FVC) declined significantly in the fourth quartile (all p for trend < 0.05). Besides, a nonlinear relationship between PIV and outcomes was evident. …”
    Get full text
    Article
  20. 6780

    A hybrid CNN-Bi-LSTM model with feature fusion for accurate epilepsy seizure detection by Xiaoshuai Cao, Shaojie Zheng, Jincan Zhang, Wenna Chen, Ganqin Du

    Published 2025-01-01
    “…First, the Discrete Wavelet Transform (DWT) is applied to perform a five-level decomposition of the raw EEG signals, from which time–frequency and nonlinear features are extracted from the decomposed sub-bands. …”
    Get full text
    Article