Showing 3,221 - 3,240 results of 6,894 for search '"nonlinear"', query time: 0.07s Refine Results
  1. 3221

    Supercontinuum generation in scintillator crystals by Vaida Marčiulionytė, Gintaras Tamošauskas, Matas Šutovas, Audrius Dubietis

    Published 2025-01-01
    “…The measured cut-off wavelengths at the short-wavelength side are in line with the general trend of blue-shifted spectral broadening on the bandgap of nonlinear material. All the nonlinear materials produced reasonable red-shifted spectral broadenings under conditions of optimal pump pulse energies, with the largest red-shift exceeding 2000 nm measured in GGG crystal. …”
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  2. 3222

    Efficient Probabilistic and Geometric Anatomical Mapping Using Particle Mesh Approximation on GPUs by Linh Ha, Marcel Prastawa, Guido Gerig, John H. Gilmore, Cláudio T. Silva, Sarang Joshi

    Published 2011-01-01
    “…First, it requires a robust registration framework that does not depend on intensity measurements and can handle large nonlinear shape variations. Second, it involves the expensive computation of nonlinear deformations with high degrees of freedom. …”
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  3. 3223

    The Research on Strain-Softening Characteristics and Local Fracture Law of Deep Granite Roadway by Chuang Sun, Yunhe Ao, Laigui Wang

    Published 2020-01-01
    “…An exponential relationship between granite peak softening modulus and confining pressure was obtained using a nonlinear fitting method. A strain-softening model was developed based on plasticity theory for granite which took into account the nonlinear dilatancy angle and confining pressure. …”
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  4. 3224

    Relationship between albumin-globulin ratio and prostate-specific antigen: a cross-sectional study based on NHANES 2003–2010 by Simeng Gao, Shaojie Li, Baofang Wu, Jiayin Wang, Sijuan Ding, Zhaohui Tang

    Published 2025-01-01
    “…Conclusion In the United States, among men over 40 years of age without prostate diseases, AGR demonstrated a nonlinear relationship with PSA, negatively correlating when AGR was below 1.32. …”
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    Article
  5. 3225

    Analytical Approximate Solutions for the Cubic-Quintic Duffing Oscillator in Terms of Elementary Functions by A. Beléndez, M. L. Alvarez, J. Francés, S. Bleda, T. Beléndez, A. Nájera, E. Arribas

    Published 2012-01-01
    “…To do this, we use the previous results obtained using a cubication method in which the restoring force is expanded in Chebyshev polynomials and the original nonlinear differential equation is approximated by a cubic Duffing equation. …”
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  6. 3226

    Identifiability of mathematical models in medical biology by S. I. Kabanikhin, D. A. Voronov, A. A. Grodz, O. I. Krivorotko

    Published 2016-01-01
    “…The processes considered are modeled using nonlinear systems of ordinary differential equations. …”
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  7. 3227
  8. 3228

    Application of mean maximum Young’s modulus value as a new parameter for differential diagnosis of prostate diseases by Nailei Huang, Xinge Cao, Zhong Li, Haoyu Wang, Wei Zhao, Jun Shi

    Published 2025-01-01
    “…The relationship between m-Emax and prostate disease was consistent with the nonlinear effect showed by tissues as an elastic model in normal physiological activity areas. …”
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  9. 3229

    Information Flow between Global Equities and Cryptocurrencies: A VMD-Based Entropy Evaluating Shocks from COVID-19 Pandemic by Emmanuel Asafo-Adjei, Peterson Owusu Junior, Anokye M. Adam

    Published 2021-01-01
    “…The impetus of this study is to examine the degree of asymmetry and nonlinear directional causality between global equities and cryptocurrencies in the frequency domain. …”
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  10. 3230

    Collective coupling of driven multilevel atoms and its effect on four-wave mixing by P. Yanes-Thomas, R. Gutiérrez-Jáuregui, P. Barberis-Blostein, D. Sahagún-Sánchez, R. Jáuregui, A. Kunold

    Published 2025-01-01
    “…Microscopic models based on multilevel atoms are central to optimizing nonlinear optical responses and the coherent control of light. …”
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  11. 3231

    Novel computations of the time-fractional chemical Schnakenberg mathematical model via non-singular kernel operators by Abdul Hamid Ganie, Fatemah Mofarreh, N. S. Alharthi, Adnan Khan

    Published 2025-01-01
    “…We presented the approximate solution using the Natural transform decomposition technique (NTDM) for the basic modified nonlinear Schnakenberg model in the sense of the Caputo–Fabrizio and Atangana–Baleanu differential operator. …”
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  12. 3232

    State estimation in an islanded hybrid solar-wind DC microgrid using Unscented Kalman Filter by Nima HajiHeydari Varnoosfaderani, Amir Khorsandi

    Published 2025-02-01
    “…The wind generation unit, which incorporates a three-phase synchronous generator, is represented by a fourth-order nonlinear state-space model. Consequently, the entire microgrid is described by a ninth-order nonlinear state-space model, which is simplified by excluding two states from the battery model. …”
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  13. 3233

    Influence of drilling incidence angle on the drilling force distribution of pneumatic impactor by Dongfang Li, Zengyang Huang, Haibin Lin, Huiyi Zhu, Wentao Fu, Yujuan Deng

    Published 2025-01-01
    “…Based on the dynamic theory of impact drilling and finite element method (FEM), the constitutive model of HJC criterion and INVENTOR 3D mechanical structure design software, a 3D numerical analysis system of piston-bit head-rock during pneumatic impactor drilling is established by ANSYS LS-DYNA, a nonlinear dynamic analysis software. The numerical results of drilling force at different incidence angles are analyzed in detail. …”
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  14. 3234

    Space Weather Challenge and Forecasting Implications of Rossby Waves by Mausumi Dikpati, Scott W. McIntosh

    Published 2020-03-01
    “…Recent simulations of magnetohydrodynamics of tachocline Rossby waves and magnetic fields are demonstrated to produce strong “tachocline nonlinear oscillations,” which have periods similar to those observed in the solar atmosphere—enhanced periods of solar activity, or “seasons”—occurring at intervals between six months and two years. …”
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  15. 3235

    ESTABLISHED MODES AND STATIC CHARACTERISTICS OF THREE-PHASE ASYNCHRONOUS MOTOR POWERED WITH SINGLE PHASE NETWORK by V. S. Malyar, V. V. Malyar

    Published 2016-12-01
    “…The resulting nonlinear system of algebraic equations is a discrete analogue of the initial system of differential equations. …”
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  16. 3236

    The significance of heat transfer through natural convection in stagnation point flow of prandtl fluid by Salman Zeb, Zakir Ullah, A.B. Albidah, Ilyas Khan, Waqar A. Khan

    Published 2025-01-01
    “…These equations are converted into nonlinear partial differential equations using appropriate dimensionless variables. …”
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  17. 3237

    The correlation between heavy metal ions in blood and metabolic dysfunction-associated steatotic liver disease from 1999 to 2018 based on NHANES data by Haijun Ma, Ju Zhao, Jian Xu

    Published 2025-01-01
    “…Stratified analyses and restricted cubic spline curves were employed to examine subgroup differences and nonlinear relationships.ResultsThe study revealed significant inverse associations between serum cadmium and mercury levels and the likelihood of MASLD. …”
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  18. 3238

    Defect-assisted reversible phase transition in mono- and few-layer ReS2 by George Zograf, Andrew B. Yankovich, Betül Küçüköz, Abhay V. Agrawal, Alexander Yu. Polyakov, Joachim Ciers, Fredrik Eriksson, Åsa Haglund, Paul Erhart, Tomasz J. Antosiewicz, Eva Olsson, Timur O. Shegai

    Published 2025-01-01
    “…Consequently, controlling the crystal structure of these materials is essential for fine-tuning their performance, e.g., linear and nonlinear optical, as well as charge transport properties. …”
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  19. 3239
  20. 3240

    Relationship between Driving Pressure and Mortality in Ventilated Patients with Heart Failure: A Cohort Study by Qilin Yang, Jiezhao Zheng, Xiaohua Chen, Weiyan Chen, Deliang Wen, Xuming Xiong, Zhenhui Zhang

    Published 2021-01-01
    “…Conclusions. There was a nonlinear relationship between driving pressure and mortality in patients with HF who were ventilated for more than 48 h, and this relationship was associated with increased in-hospital mortality when the driving pressure was more than 14.27 cmH2O.…”
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