Showing 4,661 - 4,680 results of 6,894 for search '"Nonlinearity"', query time: 0.05s Refine Results
  1. 4661

    Optic Nerve Head Hemoglobin Levels in Glaucoma: A Structural and Functional Correlation Study by Janaina A. G. Rocha, Diego T. Dias, Maria Betânia C. Lemos, Fábio N. Kanadani, Augusto Paranhos, Carolina P. B. Gracitelli, Tiago S. Prata

    Published 2021-01-01
    “…We found significant nonlinear correlations between GDF and VFMD values (R2 = 0.295, p<0.001) and between pRNFL thickness and VFMD (R2 = 0.598, p<0.001). …”
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  2. 4662

    Association of systemic immune-inflammation index (SII) with risk of psoriasis: a cross-sectional analysis of National Health and Nutrition Examination Survey 2011–2014 by Xuan Yang, Yuxin Pan, Yang Zhang, Yang Meng, Tang Tong, Mingyi Zhao

    Published 2025-01-01
    “…We further utilized smooth curve fitting to explore potential nonlinear associations between SII and psoriasis across different subgroups. …”
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  3. 4663

    Piecewise-linear companding transform for peak-to-average power ratio reduction of OFDM signals by YANG Pin-lu, HU Ai-qun

    Published 2011-01-01
    “…In order to reduce the peak-to-average power ratio(PAPR) of orthogonal frequency division multiplexing(OFDM) signals,a piecewise-linear companding transform was proposed.Small amplitudes were multiplied by a scale factor,while large ones were not only multiplied by a scale factor but also added by a shift.The resulting companding transform was piecewise-linear and continuous.It can provide significant PAPR reduction performance with low compu-tational complexity,and has low influence on system performances through piecewise transform.It is shown by theoreti-cal analysis and simulation that,a good trade-off between PAPR reduction and bit-error-rate performances can be achieved by carefully choosing the two scales and the shift.Furthermore,compared with existing linear and nonlinear companding transforms,a better power spectral density performance can be achieved.…”
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  4. 4664

    Effect of Human and Bovine Serum Albumin on kinetic Chemiluminescence of Mn (III)-Tetrakis (4-Sulfonatophenyl) Porphyrin-Luminol-Hydrogen Peroxide System by Sayed Yahya Kazemi, Seyed Mohammad Abedirad

    Published 2012-01-01
    “…The investigated parameters involved pseudo-first-order rise and fall rate constant for the chemiluminescence burst, maximum level intensity, time to reach maximum intensity, total light yield, and values of the intensity at maximum CL which were evaluated by nonlinear least square program KINFIT. Because of interaction of metalloporphyrin with proteins, the CL parameters are drastically affected. …”
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  5. 4665

    Travelling wave solutions of the reaction-diffusion mathematical model of glioblastoma growth: An Abel equation based approach by Tiberiu Harko, Man Kwong Mak

    Published 2014-11-01
    “…We consider quasi-stationary (travelling wave type) solutions to a nonlinearreaction-diffusion equation with arbitrary, autonomous coefficients,describing the evolution of glioblastomas, aggressive primary brain tumorsthat are characterized by extensive infiltration into the brain and arehighly resistant to treatment. The second order nonlinear equationdescribing the glioblastoma growth through travelling waves can be reduced to a first order Abel typeequation. …”
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  6. 4666

    STRAIN ANALYSES OF REPAIRED PIPELINES BY ENWINDING COMPOSITE MATERIALS by YANG JiCheng, WANG YanYu

    Published 2020-01-01
    “…The results show that the circumferential strain of the defect center presents a nonlinear three stage trend with the change of internal pressure after repaired. …”
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  7. 4667

    Decoherence in spin wave propagation via precursor pulses during signal equilibration by Cameron Aidan McEleney, Robert E. Camley, Rair Macêdo

    Published 2025-02-01
    “…Abstract The processes for generation, amplification, and protraction of oscillating signals—often for information transfer—are inherently associated with dispersive decoherence and nonlinear phenomena. One such example is the case of wave patterns of non-negligible amplitudes that can emerge due to dispersion of a signal propagating through matter; for a continuously applied drive these patterns precede the main signal. …”
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  8. 4668

    Gravitational Collapse and Singularity Removal in Rastall Theory by Ehsan Dorrani

    Published 2021-01-01
    “…In the present work, we study spherically symmetric gravitational collapse of a homogeneous fluid in the framework of Rastall gravity. Considering a nonlinear equation of state (EoS) for the fluid profiles, we search for a class of nonsingular collapse solutions and the possibility of singularity removal. …”
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  9. 4669

    A toxin-mediated size-structured population model: Finite difference approximation and well-posedness by Qihua Huang, Hao Wang

    Published 2016-04-01
    “…Motivated by the fact that individuals with different sizes may have different sensitivities to toxins, we develop a toxin-mediated size-structured model which is given by a system of first order fully nonlinear partial differential equations (PDEs). It is very possible that this work represents the first derivation of a PDE model in the area of ecotoxicology. …”
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  10. 4670

    Effect of time delay on a detritus-based ecosystem by Nurul Huda Gazi, Malay Bandyopadhyay

    Published 2006-01-01
    “…This paper deals with the dynamical analysis of a nonlinear model of a detritus-based ecosystem involving detritivores and predator of detritivores. …”
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  11. 4671

    Mixed Optimal Scheduling Model of Flexible Service System Based on Inverted Triangle by Shipei Hu, Yujun Sun

    Published 2019-01-01
    “…In the study presented in this paper, we built a nonlinear binary integer programming model of a flexible scheduling problem for the Department of Zhejiang Provincial Local Tax Services. …”
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  12. 4672

    ANALYSIS ON THE INFLUENCES OF TOOTH PROFILE MODIFICATION ON DYNAMIC LOAD IN A SPLIT PATH TRANSMISSION by DING RenLiang, WANG SanMin

    Published 2015-01-01
    “…For two branches of power transmission gear,the bending- torsion- shaft coupling dynamics model and the corresponding nonlinear dynamical equations are established in this paper,with considering the varying mesh stiffness,backlash and the tooth profile modification as a time-varying backlash. …”
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  13. 4673

    ANALYSIS OF FUNCTIONALLY GRADED GRAPHENE REINFORCED CIRCULAR PLATES SUBJECTED TO THERMO-MECHANICAL LOADS by MEI Jing, SHEN LuLu, YANG Bo

    Published 2021-01-01
    “…When the circular plate is subjected to a concentrated force at the center,the problem is transformed into that of an annular plate subjected to uniformly distributed shear forces along the inner boundary. The nonlinear temperature field caused by heat conduction is considered along the thickness direction of the plate. …”
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  14. 4674

    A posteriori Variational Multiscale Methods for the 1D convection-diffusion equations by Chacón Rebollo, Tomás, Domínguez-Delgado, Antonio, Gómez Marmol, Macarena

    Published 2023-06-01
    “…We present an extension of this technique to nonlinear convection-diffusion equations (a traffic model), providing an efficient method for the resolution of shocks from just the Galerkin solution at targeted times. …”
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  15. 4675

    Shield Tunneling Parameter Matching Model and UI Interface by Gongyu Hou, Zhedong Xu, Le Li, Xiaoge Quan, Yajie Yang

    Published 2020-01-01
    “…In order to improve the accuracy of shield tunneling parameter matching under the limited data, the matching model based on support vector machine (SVM) and exponential adjustment inertia weight immune particle swarm optimization (EAIW-IPSO) is proposed. The nonlinear relationship model between the tunneling parameters and the ground settlement is constructed by SVM and trained with the actual engineering sample data. …”
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  16. 4676

    Design method of secure computing protocol for deep neural network by Renwan BI, Qianxin CHEN, Jinbo XIONG, Ximeng LIU

    Published 2020-08-01
    “…Aiming at the information leakage problem in the process of deep neural network model calculation,a series of secure and efficient interactive computing protocols were designed between two non-collusive edge servers in combination with the additive secret sharing scheme.Since the nonlinear function cannot be split directly,a set of basic conversion protocols were proposed to realize the secure conversion of additive and multiplicative shares.After a few invokes,the power,comparison,exponential,logarithm,division and other low-level functions can be calculated securely.Due to the characteristics of data transfer and computation,the proposed protocols can be extended to array computation.Theoretical analysis ensures the correctness,efficiency and security of these protocols.The experimental results show that the error of these protocols is negligible,and the computational costs and communication overhead are better than the existing schemes.…”
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  17. 4677

    RESEARCH ON MODELING METHOD OF EQUIVALENT TURNING FORCE MODEL (MT) by WU MingZhou, ZHANG GuangPeng, GOU JianFeng, ZHANG Peng

    Published 2023-01-01
    “…The model is a turning force equivalent model of ideal turning tool with three nonlinear equations with equivalent principal deflection angle, equivalent edge inclination angle and equivalent normal forward angle as independent variables through the turning force experimental data and coordinate transformation matrix obtained by turning once. …”
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  18. 4678

    Improved global stability condition analysis for time-delay fast active queue management scalable transmission control protocol by Jinfeng Huang, Lingjing Zeng, Xiaolong Chen

    Published 2019-05-01
    “…The nonlinear time-delay fast active queue management scalable transmission control protocol model was studied in this article. …”
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  19. 4679

    Effect of Ground Motion Directionality on Fragility Characteristics of a Highway Bridge by Swagata Banerjee Basu, Masanobu Shinozuka

    Published 2011-01-01
    “…This procedure uses nonlinear time history analysis and accounts for the effect of directionality in the form of fragility curves. …”
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    Article
  20. 4680

    The Inverse Problem of Identification of Hydrogen Permeability Model by Yury V. Zaika, Natalia I. Rodchenkova, Ekaterina K. Kostikova

    Published 2018-01-01
    “…A numerical method is developed for TDS spectrum simulation, where only integration of a nonlinear system of low order ordinary differential equations is required. …”
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    Article