Showing 3,721 - 3,740 results of 6,894 for search '"nonlinear"', query time: 0.07s Refine Results
  1. 3721

    Existence Results for a Class of Semilinear Fractional Partial Differential Equations with Delay in Banach Spaces by Bo Zhu, Baoyan Han, Xiangyun Lin

    Published 2019-01-01
    “…In this paper, we consider a class of nonlinear time fractional partial differential equations with delay. …”
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    Article
  2. 3722

    Fractal Dynamics and Control of the Fractional Potts Model on Diamond-Like Hierarchical Lattices by Weihua Sun, Shutang Liu

    Published 2020-01-01
    “…To associate two different Julia sets of the fractional model with different parameters and fractional orders, nonlinear coupling items are taken to make one Julia set change to another. …”
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    Article
  3. 3723

    Improved integrate-and-fire model for RSA by Michele Barbi, Angelo Di Garbo, Rita Balocchi

    Published 2007-07-01
    “…The model performance is evaluated using a test based on the nonlinear prediction approach. Moreover, a short comparative account of two similar models described in the literature is given.…”
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    Article
  4. 3724

    Optical band gap modulation in functionalized chitosan biopolymer hybrids using absorption and derivative spectrum fitting methods: A spectroscopic analysis by Dyari M. Mamand, Dana S. Muhammad, Daron Q. Muheddin, Karzan A. Abdalkarim, Dana A. Tahir, Hawkar A. Muhammad, Shujahadeen B. Aziz, Sarkawt A. Hussen, Jamal Hassan

    Published 2025-01-01
    “…The dopped samples show an increase in their linear optical susceptibility, third-order nonlinear optical susceptibility and nonlinear refractive indices, changing from 3.165 × 10–15 to 2.831 × 10–12 esu. …”
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    Article
  5. 3725

    An Integrated Stacking Ensemble Model for Natural Gas Purchase Prediction Incorporating Multiple Features by Junjie Wang, Lei Jiang, Le Zhang, Yaqi Liu, Qihong Yu, Yuheng Bu

    Published 2025-01-01
    “…Although existing prediction methods have achieved some success in addressing the nonlinear relationships in natural gas purchases, there remains potential for further improvement. …”
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    Article
  6. 3726

    Daily sodium intake and constipation in US adult males: an uncommon negative association revealed by national health and nutrition examination survey data from the United States (2... by Xue-Feng Peng, Hua Yang, Wen-Xing Chen, Miao Yu, Deng-Chao Wang

    Published 2025-01-01
    “…On the contrary, RCS analysis did not reveal a nonlinear association between daily sodium intake and constipation risk (P = 0.528). …”
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    Article
  7. 3727

    The role of sodium-nickel chloride (Na-NiCl2) batteries in managing uncertainty and renewable sources for empowering hybrid energy systems using bi-level CONOPT-based optimization by Abdallah Aldosary

    Published 2025-01-01
    “…The methodology leverages the CONOPT approach within the GAMS platform, which integrates sequential linear and quadratic programming algorithms with reduced gradients to address complex nonlinear optimization issues characterized by sparse and nonlinear constraints. …”
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    Article
  8. 3728

    Association between serum total bilirubin levels and 28-day all-cause mortality after intracerebral hemorrhage by Dachang Qiu, Guangwei Li, Yongfei Dong, Yongfei Dong

    Published 2025-02-01
    “…Restricted cubic spline analysis revealed a nonlinear link between mean serum TBIL levels and 28-day all-cause mortality (p for nonlinear = 0.001). …”
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    Article
  9. 3729

    EEG electrode setup optimization using feature extraction techniques for neonatal sleep state classification by Hafza Ayesha Siddiqa, Muhammad Farrukh Qureshi, Arsalan Khurshid, Yan Xu, Laishuan Wang, Saadullah Farooq Abbasi, Chen Chen, Wei Chen

    Published 2025-01-01
    “…With the incorporation of time and frequency-domain linear and nonlinear features into sleep staging, newborn sleep dynamics and irregularities can be better understood.…”
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    Article
  10. 3730

    Hybrid Prophet-NAR Model for Short-Term Electricity Load Forecasting by Winita Sulandari, Yudho Yudhanto, Etik Zukhronah, Isnandar Slamet, Hilman Ferdinandus Pardede, Paulo Canas Rodrigues, Muhammad Hisyam Lee

    Published 2025-01-01
    “…Traditional models like SARIMA and Singular Spectrum Analysis (SSA) have been widely used but often need to capture complex nonlinear patterns and deal with data uncertainties. …”
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    Article
  11. 3731

    Associations of the triglyceride-glucose index and remnant cholesterol levels with the prevalence of Carotid Plaque in patients with type 2 diabetes: a retrospective study by Xin Xu, Tianrong Pan, Xing Zhong, Yijun Du, Deyuan Zhang

    Published 2025-01-01
    “…According to restricted cubic splines (RCS), RC levels increased linearly with carotid plaque presence (P - nonlinear > 0.05). Conversely, the TyG index and carotid plaque presence did not associate linearly (P - nonlinear < 0.05). …”
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    Article
  12. 3732
  13. 3733

    Association of the body roundness index with chronic diarrhea and chronic constipation: findings based on the National Health and Nutrition Examination Survey 2005–2010 data by Yinda Wang, Fei Chen, Binzhong Zhang, Zhengwei Song

    Published 2025-01-01
    “…RCS analysis further uncovered statistically significant nonlinear positive associations of BRI and with diarrhea (P = 0.005) and constipation (P = 0.037). …”
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    Article
  14. 3734

    Association of anxiety status and anxiety duration with constipation in adult Americans: a cross-sectional study using data from the NHANES 2007–2010 by Xinran Li, Conghui Bian, Hui Dai, Xingrui Chen, Haihua Qian, Dan Zhang

    Published 2025-01-01
    “…Smoothed curve fitting was applied to investigate both linear and nonlinear associations between anxiety duration and constipation risk. …”
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    Article
  15. 3735
  16. 3736

    Effect of Laser Distance Measurement for Fatigue Crack Detection on Aluminium Plate Using Laser Doppler Vibro-Meter by Tino Hermanto, Arya Rudi Nasution, Habib Satria, Hermansyah Hermasnyah, Yopan Rahmad Aldori, Ruztamreen Bin Jenal, Abd Rahman Bin Dullah, Adly Zulqarnain bin Mohamad

    Published 2024-06-01
    “… Fatigue cracks can occur because the material is unable to withstand the load applied repeatedly. A nonlinear vibroacoustic method was introduced to overcome this problem. …”
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    Article
  17. 3737

    Body Mass Index and 1-Year Unplanned Readmission in Chinese Patients with Acute Myocardial Infarction: A Retrospective Cohort Study by Dandan Sun, Qingyun Zhang, Wei Li, Haichen Wang

    Published 2020-01-01
    “…The effect sizes and the confidence intervals of the left and right sides of inflection point were 0.9 (0.7–1.2, P for nonlinearity = 0.530) and 2.8 (1.3–5.8, P for nonlinearity = 0.008), respectively. …”
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  18. 3738

    Formation of the Educational Trajectory: Educational Motives and Choices in the Narratives of Students from Moscow Leading Universities by A. V. Noskova, D. V. Goloukhova, E. I. Kuzmina

    Published 2023-12-01
    “…Informants described their subjective educational experience as a sequence of choices they made in the space of higher education.Analysis  of  students’  narratives  made  it  possible  to  qualitatively  differentiate  between  linear  and  nonlinear  trajectories,  as  well  as  their  subtypes,  differing  in  their  internal  motivation and educational settings. …”
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  19. 3739

    Features and Constitutive Model of Gypsum’s Uniaxial Creep Damage considering Acidization by Wei Chen, Wen Wan, Senlin Xie, Wenlong Kuang, Wenqing Peng, Qiuhong Wu, Shasha Tong, Xianqing Wang, Xiaoyu Tang

    Published 2020-01-01
    “…Due to the rapid increase, the surfaces of the samples are almost like “holes”. (3) A new nonlinear creep constitutive model was established by connecting Burgers model with nonlinear viscoplastic body (NVPB) model in series, which can well describe the creep characteristics of gypsum rocks under acid corrosion.…”
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  20. 3740

    The Associations of Platelet Activation and Coagulation Parameters with Obstructive Sleep Apnoea: A Large-Scale Observational Study by Jundong Yang, Wenjun Xue, Zhicheng Wei, Caiqiong Hou, Huaming Zhu, Huajun Xu, Xiaolin Wu, Yunhai Feng, Xinyi Li

    Published 2023-01-01
    “…Conclusion. Our study revealed nonlinear relationships between PDW and APTT, and AHI and ODI, in OSA, with AHI and ODI increasing the risk of an abnormal PDW and thus also the cardiovascular risk. …”
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    Article