Showing 1 - 20 results of 74 for search 'obstructive nonlinearity', query time: 0.09s Refine Results
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    Mobile Phone Auscultation Accurately Diagnoses Chronic Obstructive Pulmonary Disease Using Nonlinear Respiratory Biofluid Dynamics by Caroline Emily Gosser, Luther Daniel, Martin Huecker, Rodrigo Cavallazzi, Hiram Rivas, Jarred Jeremy Thomas, Ryan Close

    Published 2025-06-01
    “…<b>Background/Objectives:</b> Chronic obstructive pulmonary disease (COPD) remains a condition with high morbidity, mortality, and misdiagnosis. …”
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    Article
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    Decentralized nonlinear model predictive control-based flock navigation with real-time obstacle avoidance in unknown obstructed environments by Nuthasith Gerdpratoom, Kaoru Yamamoto

    Published 2025-06-01
    “…This work extends our prior work on the distributed nonlinear model predictive control (NMPC) for navigating a robot fleet following a certain flocking behavior in unknown obstructed environments with a more realistic local obstacle-avoidance strategy. …”
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    Association between sleep duration and hypertension risk in patients with obstructive sleep apnea by Yi Wang, Xi Xi Chen, Fang Ying Lu, Ya Ru Yan, Shi Qi Li, Liu Zhang, Ying Ni Lin, Qing Yun Li

    Published 2025-04-01
    “…Abstract Obstructive sleep apnea (OSA) is a well-established risk factor for hypertension, with sleep duration being a modifiable factor influencing this risk. …”
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    The neutrophil-to-lymphocyte ratio is associated with increased risk of all-cause mortality in obstructive sleep apnea by Xue-Jun Lin, Xu-Qiao Mei, Chu-Dan Yang, Yan-Qin Qiu, Bai-Ling Chen, Feng-Li Tang, Liang-Ji Zhang, Li Lin, Shi-Chao Wei, Li-Da Chen

    Published 2025-07-01
    “…Weighted Cox regression analyses were used to explore the association between the NLR and all-cause mortality. Nonlinear associations were detected using restricted cubic splines (RCS). …”
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    Article
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    Associations between serum lipid profiles and the incidence of chronic obstructive pulmonary disease in the UK Biobank by Mengxia Li, Bingqing Xu, Hao Yu, Yanan Wan, Zheng Zhu, Pengfei Luo, Jian Su, Jinyi Zhou, Xikang Fan

    Published 2025-08-01
    “…Abstract Objective To investigate the relationship between serum lipid levels and the risk of Chronic obstructive pulmonary disease (COPD) in the UK Biobank. …”
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    Article
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    Association between nutritional risk and CRP levels in patients with acute exacerbation of chronic obstructive pulmonary disease by Peihong Liang, Peihong Liang, Jun Wu

    Published 2025-06-01
    “…This study is the first to investigate this association.MethodsThis retrospective cohort study analyzed 313 hospitalized patients diagnosed with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Participants were stratified into a nutritional risk group (n = 55) and a non-risk group (n = 258) using the NRS-2002 screening tool. …”
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    Predictive role of serum interleukin-37 on prognosis of patients with acute exacerbation of chronic obstructive pulmonary disease by SU Xi, SUI Fengqiu, WANG Yongming, LIU Mingxia

    Published 2025-01-01
    “…<b>Objective</b> To observe the changes of serum interleukin (IL)-37 levels in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD) and its predictive role on prognosis. …”
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    Article
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    Nonlinear signal processing, spectral, and fractal based stridor auscultation: A machine learning approach by VIMAL RAJ, A RENJINI, M S SWAPNA, S SREEJYOTHI, S SANKARARAMAN

    Published 2022-03-01
    “…The appearance of B and C in the PSD plot of ST is due to the obstructions in the trachea and upper airways caused by lesions. …”
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    Association between cardiometabolic Index and obstructive sleep apnea and the mediating role of smoking: a cross-sectional study by Yifan Zhou, Jinghao Yu, Haitao Tan, Jun Xiao

    Published 2025-07-01
    “…Finally, mediation analyses confirmed that smoking served as a mediator in the relationship between CMI and OSA, exhibiting a mediation effect size of 0.002115.ConclusionIn the adult population of the United States, a positive nonlinear relationship exists between the CMI and the prevalence of OSA. …”
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    Low-carbohydrate diet score and chronic obstructive pulmonary disease: a machine learning analysis of NHANES data by Xin Zhang, Jipeng Mo, Kaiyu Yang, Tiewu Tan, Cuiping Zhao, Hui Qin

    Published 2024-12-01
    “…While the link between the LCD score and chronic obstructive pulmonary disease (COPD) has been explored, its relevance in the US population remains uncertain. …”
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    Identification of factors directly linked to incident chronic obstructive pulmonary disease: A causal graph modeling study. by Robert W Gregg, Chad M Karoleski, Edwin K Silverman, Frank C Sciurba, Dawn L DeMeo, Panayiotis V Benos

    Published 2024-08-01
    “…<h4>Background</h4>Beyond exposure to cigarette smoking and aging, the factors that influence lung function decline to incident chronic obstructive pulmonary disease (COPD) remain unclear. …”
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    Article
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    The association between skeletal muscle mass and all-cause mortality in acute exacerbation of chronic obstructive pulmonary disease by Tianye Li, Hao Xu, Lefu Chen, Yixin Xu, Yanhong Zheng, Hongjun Zhao, Chengshui Chen, Chengshui Chen, Zaisheng Zhu

    Published 2025-04-01
    “…BackgroundAcute exacerbation of chronic obstructive pulmonary disease (AECOPD) significantly impacts patient quality of life and prognosis. …”
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    Body Mass Index and Lung Function in Hospitalized Severe AECOPD Patients: Investigating Nonlinear Associations and the Role of Hemoglobin by Zhang C, Ling W, Pan H, Bai R, He L

    Published 2025-05-01
    “…Subgroup analyses assessed the modifying effect of Hb.Results: BMI exhibited a nonlinear positive association with FEV1, FVC, FEV1% predicted, and FVC% predicted. …”
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    Association Between C-Reactive Protein to Lymphocyte Ratio and Chronic Obstructive Pulmonary Disease: A Cross-Sectional Study by Ao T, Huang Y, Zhen P, Hu M

    Published 2025-06-01
    “…The robustness and consistency of these findings were further confirmed by subgroup and sensitivity analyses.Conclusion: Increased CLR correlated with a heightened risk of developing COPD, exhibiting nonlinear patterns and threshold effects.Keywords: C-reactive protein to lymphocyte ratio, chronic obstructive pulmonary disease, inflammation, national health and nutrition examination survey…”
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    On nonlinear coupled differential equations for corrugated backward facing step (CBFS) with circular obstacle: AI-neural networking by Khalil Ur Rehman, Wasfi Shatanawi, Weam G. Alharbi

    Published 2025-03-01
    “…The solution of nonlinear differential equations for narrating flow fields is a challenging task. …”
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    Association of serum uric acid-to-high-density lipoprotein cholesterol ratio with obstructive sleep apnea: a cross-sectional study by Yan Tang, Jiaxin Liu, Junchi Zhang, Yuying Zhu, Jinling Zhou

    Published 2025-05-01
    “…A positive association between UHR and the risk of OSA was observed (OR = 1.02; 95% CI: 1.01, 1.04; P = 0.014). Moreover, a nonlinear relationship was confirmed (P for nonlinearity = 0.024), with an inflection point at a UHR level of 10.23. …”
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    Association between the uric acid-to-high-density cholesterol ratio (UHR) and obstructive sleep apnea: mediation by C-reactive protein by Yu Liu, Liang Li, Ruixue Wang, Shucen Guo, Yitong Shen, Bowen Yue, Wenjing Zhu, Cuixia Zheng

    Published 2025-07-01
    “…RCS analysis revealed a nonlinear dose–response relationship between UHR and OSA (P for nonlinear < 0.001), characterized by an inverted L-shaped curve with steeper risk elevation at lower UHR values and stabilization at higher levels. …”
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    Article