Showing 2,781 - 2,800 results of 6,894 for search '"Nonlinearity"', query time: 0.07s Refine Results
  1. 2781

    Process, dynamics and bioeffects of acoustic droplet vaporization induced by dual-frequency focused ultrasound by Yubo Zhao, Yi Feng, Liang Wu

    Published 2025-02-01
    “…To address this, our study developed an integrated model that unifies these three stages of ADV, stimulated by a continuous nonlinear dual-frequency ultrasound wave. Using this integrated model, we investigated the influence of nonlinear dual-frequency ultrasound parameters on ADV dynamics and bioeffects by incorporating tissue viscoelasticity through parametric studies. …”
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  2. 2782

    Continuous tunability of refractive index contrast in LiNbO3 optical waveguides fabricated by high-vacuum vapor-phase proton exchange by Mihnea Raoul Sandu, Alicia Petronela Rambu, Laura Hrostea, Sorin Tascu

    Published 2025-02-01
    “…This paper presents a simple and reliable method allowing well-controlled index contrast tunability between high-index contrast (Δn e  = 0.1) and low-index contrast (Δn e  = 0.035) while benefiting from the optical nonlinearity of LiNbO3 waveguides fabricated using HiVac-VPE technique. …”
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  3. 2783

    Comparative Analysis of Re-Identification Methods of Multi-Criteria Decision Analysis Models by Bartlomiej Kizielewicz, Jakub Wieckowski, Bogdan Franczyk, Jaroslaw WaTrobski, Wojciech Salabun

    Published 2025-01-01
    “…Addressing the challenge of re-identifying decision models brings up issues related to updating the last version of models to preserve their effectiveness, particularly in nonlinear decision scenarios. Common MCDA methods, which are based on linearity assumptions, encounter difficulties when dealing with nonlinearity, making it necessary to investigate practical methods for re-identifying nonlinear models. …”
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  4. 2784

    Association between composite dietary antioxidant indices and anemia: NHANES 2003-2018. by Qian Wu, Zhiyu Wang, Jieyu Xia, Hui Xu, Gang Huang, Guangyong Feng, Xiaoxia Gou

    Published 2025-01-01
    “…The RCS analysis revealed linear negative relationship between CDAI and anemia (P for nonlinearity = 0.619). Except for sex, smoking, diabetes and hypertension, no statistically significant interactions were found in any subgroup analysis (P < 0.05 for interaction).…”
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  5. 2785

    Long period fiber gratings in anti-resonant hollow core fiber by Ligang Huang, Yanxiang Zhao, Yujia Li, Shunli Liu, Hailin Zhou, Lei Gao, Leilei Shi, Guiyao Zhou, Tao Zhu

    Published 2025-01-01
    “…Additionally, due to the characteristics of AR-HCFs, including low latency, low dispersion, low nonlinearity, and high damage threshold, this device also serves for long-distance fiber communication and high-power laser pulse shaping.…”
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  6. 2786

    An Ultra‐Short‐Term Multi‐Step Prediction Model for Wind Power Based on Sparrow Search Algorithm, Variational Mode Decomposition, Gated Recurrent Unit, and Support Vector Regressio... by Yulong Chen, Xue Hu, Xiaoming Liu, Lixin Zhang

    Published 2024-11-01
    “…Low‐frequency sub‐modes data with low complexity and strong nonlinearity are predicted with SVR. The proposed model was evaluated against seven others using three error metrics: MAE, RMSE, and R2, along with their corresponding enhancement percentages. …”
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  7. 2787

    Pull-out bond efficiency and load capacity of the bonded HSC strips reinforced with steel and FRP bars to concrete by M.H. Seleem, F.A. Megahed, A.A.M. Badawy, I.A. Sharaky

    Published 2025-07-01
    “…The geometry and materials' nonlinearity were considered in the FE model to precisely predict the behaviour of the experimentally tested specimens. …”
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  8. 2788

    Development of a Three-Stage Hybrid Model by Utilizing a Two-Stage Signal Decomposition Methodology and Machine Learning Approach to Predict Monthly Runoff at Swat River Basin, Pak... by Muhammad Sibtain, Xianshan Li, Ghulam Nabi, Muhammad Imran Azam, Hassan Bashir

    Published 2020-01-01
    “…Nevertheless, the hydrological runoff practically possesses a nonlinear dynamics, and constructing appropriate runoff prediction models to deal with the nonlinearity is a challenging task. …”
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  9. 2789

    Characterization of Micro-Crack Orientation in a Thin Plate Using Quasi-Static Component Generated by Incident Ultrasonic Lamb Waves by Liang Zhao, Jun Zhou, Weifeng Yuan, Bin Gu, Mingxi Deng, Caibin Xu, Xiangyan Ding, Zhengpan Qi, Jishuo Wang, Qin Ying

    Published 2025-01-01
    “…When the primary Lamb waves at A0 mode impinge on the micro-crack, under the modulation of the contact acoustic nonlinearity (CAN), the micro-crack itself will induce QSC. …”
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  10. 2790

    The association between obesity indicators and mortality among individuals with hyperlipidemia: evidence from the NHANES 2003–2018 by Yiheng Zhang, Yajun Yao

    Published 2025-01-01
    “…Conversely, a linear positive association was uncovered between WWI and mortality (both P > 0.05 for nonlinearity). Age, alcohol consumption and chronic kidney disease had modifying effects on the relationship between WWI and total mortality among those with hyperlipidemia. …”
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  11. 2791

    Brillouin–Mandelstam scattering in telecommunications optical fiber at millikelvin temperatures by E. A. Cryer-Jenkins, A. C. Leung, H. Rathee, A. K. C. Tan, K. D. Major, M. R. Vanner

    Published 2025-01-01
    “…Brillouin–Mandelstam scattering is a strong and readily accessible optical nonlinearity, enabling a wide array of applications and research directions. …”
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  12. 2792

    Association between obstructive sleep apnea hypopnea syndrome and arteriosclerosis in patients with type 2 diabetes mellitus: mediating effect of blood pressure by Xinshui Wang, Xiaolin Huang, Yuexian Xing, Xiaohong Jiang, Fei Hua

    Published 2025-02-01
    “…A segmented regression model was used to explain nonlinearity, and subgroup analysis was conducted to assess interactions. …”
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  13. 2793

    Triglyceride Glucose Index Was a Predictor of 6-Month Readmission Caused by Pulmonary Infection of Heart Failure Patients by Licheng Shi, Jianan Liu, Xuanfeng Zhu, Tiantian Li, Jingli Wen, Xinyu Wang, Xu Qi

    Published 2022-01-01
    “…Only the 6-month readmission was significantly different among TyG quartiles, and it was the highest (41.9%) in the lowest quartile (ranging 6.17∼7.36). the TyG index was nonlinearly associated with 6-month readmission (p for nonlinearity = 0.009), with the lower level of TyG index increasing the risk of 6-month readmission. …”
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  14. 2794

    Compressive stress-strain relationship of limestone calcined clay cement-based UHPC matrix by Kunjie Fan, Peng Du, Yao Yao

    Published 2025-07-01
    “…Furthermore, adding an appropriate amount of LC2 (no more than 30 %) to UHPC matrix is found to reduce the nonlinearity of compressive stress-strain relationships, thereby minimizing the plastic deformation of LC3-UHPC matrix. …”
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  15. 2795

    Characterization and assessment of hydrogen leakage mechanisms in salt caverns by Mojtaba Ghaedi, Raoof Gholami

    Published 2025-01-01
    “…A finite-difference approximation with an iterative procedure was then used to treat the nonlinearity and solve the presented formulations. The formulations were validated against the experimental data reported in the literature. …”
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  16. 2796

    ESO-Based Direct Model-Free Adaptive Predictive Compensation Control for Permanent Magnet Synchronous Motors by Yang Liu, Guangxu Zhou, Lei Guo, Zibo Sun

    Published 2025-01-01
    “…For a class of permanent magnet synchronous motors (PMSM) characterized by strong coupling, significant nonlinearity, load uncertainties, and external disturbances, this paper investigates an extended state observer-based direct model-free adaptive predictive compensation control (ESO-dMFAPCC) method for speed regulation. …”
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  17. 2797

    Association between remnant cholesterol and depression in middle-aged and older Chinese adults: a population-based cohort study by Yang Zhou, Yan Lin, Yanhui Yang, Wang Lei, Juan Xu, Yuanzeng Zhu

    Published 2025-02-01
    “…Following adjustment for confounding factors, individuals in the higher RC level quartile exhibited a higher depression risk (Q3: odds ratio [OR]: 1.75, 95% confidence intervals [CI]: 1.29–2.39; Q4: OR: 2.68, 95% CI: 1.96–3.68, P for trend &lt; 0.001), with a linear correlation between RC levels and depression (P for nonlinearity = 0.108). And the subgroup analysis yielded results consistent with the primary findings.ConclusionThis study revealed that in China, in middle-aged and older individuals, elevated RC levels were associated with a higher depression risk, suggesting RC is a promising target for depression prevention and treatment.…”
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  18. 2798

    Quantification of Soluble or Insoluble Fractions of Leishmania Parasite Proteins in Microvolume Applications: A Simplification to Standard Lowry Assay by Bhagya Deepachandi, Sudath Weerasinghe, Thisira Priyantha Andrahennadi, Nadira D. Karunaweera, Nadeeja Wickramarachchi, Preethi Soysa, Yamuna Siriwardana

    Published 2020-01-01
    “…Although the standard Lowry assay and its modifications are most abundantly used in protein quantification, the existing methods are rigid or often demonstrate nonlinearity between protein concentration and color intensity. …”
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  19. 2799
  20. 2800

    Ultraviolet-Enhanced Flat Supercontinuum Light Generated in Cascaded Photonic Crystal Fiber by Han Dong, Zhiyuan Huang, Xiaotao Yang, Zhuozhao Luo, Yu Zheng, Ruochen Yin, Wenbin He, Meng Pang, Xin Jiang

    Published 2024-01-01
    “…The following PCF samples with decreasing core diameters enhance the waveguide nonlinearity, and at the same time provide continuously-shorter phase-matching wavelengths for dispersive-wave emission, thereby pushing the short-wavelength edge of the SC spectrum into the deep ultraviolet spectral region. …”
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