Showing 6,461 - 6,480 results of 6,894 for search '"nonlinear"', query time: 0.10s Refine Results
  1. 6461

    The L-shaped association between body roundness index and all-cause mortality in osteoporotic patients: a cohort study based on NHANES data by Ziyao Ding, Ziyao Ding, Ziyao Ding, Wenbo Li, Wenbo Li, Wenbo Li, Haixu Qi, Haixu Qi, Haixu Qi, Tianci Fang, Qirui Zhu, Qirui Zhu, Qirui Zhu, Xinzhe Qu, Xinzhe Qu, Changchang Chen, Jun Sun, Jun Sun, Yong Pang

    Published 2025-01-01
    “…To analyze the relationship between BRI and mortality while accounting for important covariates, we employed weighted Cox proportional hazards models, conducted Kaplan–Meier survival analyses, and utilized restricted cubic splines (RCS).ResultsHigher BRI was significantly associated with better long-term survival, showing an “L”-shaped nonlinear inverse relationship with mortality, with a threshold at BRI = 5. …”
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  2. 6462

    Linear association between high-sensitivity C-reactive protein and postoperative delirium after general anesthesia: a cross-sectional study by Xiao Qin, Junming Ren, Chunping Xing, Lijiao Chen, Renjie Wang, Shouyuan Tian

    Published 2025-01-01
    “…Additionally, RCS analysis indicated a linear positive association between Log10Hs-CRP and POD risk (p = 0.003, nonlinear p = 0.896).ConclusionElevated Hs-CRP levels are significantly associated with an increased risk of POD following general anesthesia.…”
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  3. 6463

    Physicochemical and Luminescent Properties of Copolymers Composed of Three Monomers: Polythiophenes Based on 3-Hexylthiophene and 3,4-Ethylenedioxythiophene by Marco Antonio Ramírez-Gómez, Karla Karina Guzmán-Rabadán, Edgar González-Juárez, Marisol Güizado-Rodríguez, Gabriel Ramos-Ortiz, Jorge Enrique Alba-Rosales, Huehueteotl Panzo-Medrano, Victor Barba, Mario Rodríguez, José Luis Maldonado, Miguel Ángel Basurto-Pensado

    Published 2017-01-01
    “…The optical properties of these copolymers were highly dependent on the presence of EDOT, the molecular weight, and the regioregularity rather than the presence of the third component (fluorene or TDR1). The good nonlinear absorption and luminescent properties exhibited by these copolymers were exploited to fabricate nanoparticles used as fluorescent tags for the imaging of microstructures.…”
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  4. 6464

    Use of Wiener- Hammerstein (WH) Model Optimized with Genetic ‎Algorithm in Identification of Photovoltaic System by Iman Sohrabi Moghadam Chafjiri, Alireza Azadbar, Abbas Ghadimi, Seyed Javad Mousavi

    Published 2025-01-01
    “…The nonlinear input and output </span><strong><span lang="AR-SA" style="font-size: 10pt; line-height: 125%; font-family: Calibri, sans-serif;">&lrm;</span></strong><span style="font-size: 11pt; line-height: 125%; font-family: Calibri, sans-serif;">are taken from the </span><strong><span lang="AR-SA" style="font-size: 10pt; line-height: 125%; font-family: Calibri, sans-serif;">&lrm;</span></strong><span style="font-size: 11pt; line-height: 125%; font-family: Calibri, sans-serif;">irradiance and DC output current data of the real system, respectively. …”
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  5. 6465

    Short-term association between ambient air pollution and childhood non-allergic rhinitis: A time-series study at a National Children's Regional Medical Center, in Hefei, China, fro... by Wei Cui, Hongxia Gao, Liran Zhu, Yuanyuan Xu, Haipeng Liu

    Published 2025-01-01
    “…A quasi-Poisson generalized linear regression model combined with a distributed lag nonlinear model was applied to evaluate the association between air pollution and outpatient visits for childhood NAR. …”
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  6. 6466

    CHARACTERISTICS OF CYTOPROTECTIVE EFFECT ON THE GASTRIC MUCOSA OF CRYOPRESERVED PLACENTA EXTRACT UNDER WATER-IMMOBILIZATION STRESS by Illia Koshurba, Fedir Hladkykh, Mykola Chyzh

    Published 2022-12-01
    “…In vivo experimental studies were performed on 28 nonlinear laboratory male rats weighing 200-220 g. …”
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  7. 6467

    Prediction of outpatient rehabilitation patient preferences and optimization of graded diagnosis and treatment based on XGBoost machine learning algorithm by Xuehui Fan, Ruixue Ye, Yan Gao, Kaiwen Xue, Zeyu Zhang, Jing Xu, Jingpu Zhao, Jun Feng, Yulong Wang

    Published 2025-01-01
    “…Logistic Regression had a significantly lower accuracy, indicating difficulties with nonlinear data. The key influencing factors identified include distance to medical institutions, arrival time, length of hospital stay, and specific diseases, such as cardiovascular, pulmonary, oncological, and orthopedic conditions. …”
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  8. 6468

    Associations of prognostic nutritional index with cardiovascular all-cause mortality among CVD patients with diabetes or prediabetes: evidence from the NHANES 2005–2018 by WenYi Xu, Li Zhang, Li Zhang, QianKun Yang, Ying Cao, Rui Rao, Li Lv, Qin Cen, Qiong Wei, LuLing Yang

    Published 2025-02-01
    “…We used restricted cubic spline (RCS) and maximally selected rank statistics method (MSRSM) to assess the nonlinearity of the PNI-mortality association and determine the optimal PNI cutoff for survival outcomes. …”
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  9. 6469

    Association of the Triglyceride-Glucose Index and Obesity Indicators with Multiple Chronic Diseases: A Longitudinal Cohort Study Based on CHARLS by Lan Y, Qi G, Li B, Sooranna SR, Chen D, Rao W, Lin Y, Pang Y

    Published 2025-01-01
    “…However, the TyG-BMI, TyG-WC and TyG-WHtR indexes exhibited nonlinear dose-response relationships with the risk of MCD (P-nonlinearity < 0.0001 in all cases), indicating higher indexes were associated with higher risks of MCD. …”
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  10. 6470

    The association between short-term apparent temperature exposure and human coagulation: A time-series study from Beijing, 2014–2023 by Yi Zhang, Tiancheng Wang, Jiaqi Shi, Ying Ma, Nairui Yu, Xinyan Zhou, Pai Zheng, Zhangjian Chen, Guang Jia

    Published 2025-01-01
    “…The study employed generalized additive models to analyzed the linear and nonlinear associations between AT and coagulation indices. …”
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  11. 6471

    The effect of pharmaceutical composition based on L-carnitine on structural and functional features of rat placenta in the model of passive tobacco smoking by I.V. Volokhov, V.A. Rybak, L.Yu. Sergienko, S.S. Sokolova, S.P. Kustova

    Published 2025-01-01
    “…The study was conducted on 40 nonlinear pregnant rats aged 6 months. Passive smoking modeling was performed from day 1 to day 20 of pregnancy. …”
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  12. 6472

    Kinematics Analysis and Performance Optimization of Low Coupling PRPaR/2CRR Parallel Mechanism by Zhang Li, Zhu Lei, Xu Dong

    Published 2024-10-01
    “…Characteristics such as degrees of freedom and coupling were analyzed based on the theory of directional feature sets, respectively. The nonlinear kinematics equations were established by using the geometric position relation and the constraint of the rod length, and the expression of the inverse position solution was derived. …”
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  13. 6473
  14. 6474

    Prognostic nutritional index as a predictor of cardiovascular and all-cause mortality in American adults with hypertension: results from the NHANES database by Jing Tang, Jing Tang, Long Yang, Guan-Ying Yang, Yan-Hong Li, You-Sen Zhu, Hui Li, Xiao-Ming Gao, Xiao-Ming Gao, Xiao-Ming Gao

    Published 2025-01-01
    “…RCS curves showed a nonlinear relationship between PNI and all-cause mortality and cardiovascular mortality (both non-linear p &lt; 0.001).ConclusionsLower PNI levels are associated with mortality in patients with hypertension. …”
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  15. 6475

    Fatigue life prediction of asphalt binders under variable loading levels based on dissipated pseudo-strain energy by Chenze Fang, Hui Li, Zhenxia Li, Yuanzhao Chen, Tengteng Guo

    Published 2025-07-01
    “…The DPSE-based binder fatigue damage presents a nonlinear evolution process. The obtained binder fatigue life for the loading level sequences of σH-σL and σL-σH are negatively and positively correlated with the first life ratio, respectively. …”
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  16. 6476

    Advances in machine learning applications to resource technology for organic solid waste by Hongzhi MA, Yichan LIU, Jihua ZHAO, Fan FEI, Ming GAO, Qunhui WANG

    Published 2025-03-01
    “…ANN, for example, is particularly useful for complex, nonlinear relationships within biological treatment processes, while SVM is effective for small datasets and high-dimensional data. …”
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  17. 6477

    Correlation between meteorological variables, air quality, and the Coronavirus-19 pandemic events by M. Gidarjati, T. Matsumoto

    Published 2024-10-01
    “…Conversely, a negative linear correlation was observed between carbon monoxide and ozone levels. Nonlinear correlations also existed between various pollutants. …”
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  18. 6478

    A Dynamic Adaptive Ensemble Learning Framework for Noninvasive Mild Cognitive Impairment Detection: Development and Validation Study by Aoyu Li, Jingwen Li, Yishan Hu, Yan Geng, Yan Qiang, Juanjuan Zhao

    Published 2025-01-01
    “…The collected data underwent rigorous preprocessing, during which features in the time, frequency, and nonlinear domains were extracted from individual physiological signals. …”
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  19. 6479

    Understanding the formation of a low-pressure pedestal in the presence of a strong internal transport barrier in DIII-D high βp plasmas by X.R. Zhang, X. Jian, Y.R. Zhu, Y.P. Zou, Z.Y. Li, Y.J. Zhou, L.Z. Liu, S. Zheng, Z.X. Wang, W. Chen, S.Y. Ding, A.M. Garofalo, V.S. Chan, G.Q. Li

    Published 2025-01-01
    “…Under such a low pedestal, linear simulations with BOUT++ predict the growth rates of peeling–ballooning modes to be lower across the whole toroidal mode number spectra, and the nonlinear BOUT++ simulation exhibits lower saturated fluctuation intensity as well, consistent with the experimentally observed lower ELM size.…”
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  20. 6480

    The Monocyte-to-Lymphocyte Ratio at Hospital Admission Is a Novel Predictor for Acute Traumatic Intraparenchymal Hemorrhage Expansion after Cerebral Contusion by Jiangtao Sheng, Tian Li, Dongzhou Zhuang, Shirong Cai, Jinhua Yang, Faxiu Ding, Xiaoxuan Chen, Fei Tian, Mindong Huang, Lianjie Li, Kangsheng Li, Weiqiang Chen

    Published 2020-01-01
    “…MLR was significantly larger in patients with acute tICH expansion compared to those without acute tICH expansion (mean [SD], 1.08 [1.05] vs. 0.59 [0.37], P<0.001). A nonlinear positive relationship between MLR and the incidence of acute tICH expansion was observed. …”
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