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  1. No Access

    Article

    Exponential-sum-approximation technique for variable-order time-fractional diffusion equations

    In this paper, we study the variable-order (VO) time-fractional diffusion equations. For a VO function \(\alpha (t)\in (0,1)\) ...

    Jia-Li Zhang, Zhi-Wei Fang, Hai-Wei Sun in Journal of Applied Mathematics and Computing (2022)

  2. No Access

    Article

    Splitting preconditioning based on sine transform for time-dependent Riesz space fractional diffusion equations

    We study the sine-transform-based splitting preconditioning technique for the linear systems arising in the numerical discretization of time-dependent one dimensional and two dimensional Riesz space fractional...

    **n Lu, Zhi-Wei Fang, Hai-Wei Sun in Journal of Applied Mathematics and Computing (2021)

  3. No Access

    Article

    Preconditioning for symmetric positive definite systems in balanced fractional diffusion equations

    In this paper, we study the finite volume discretization method for balanced fractional diffusion equations where the fractional differential operators are comprised of both Riemann-Liouville and Caputo fracti...

    Zhi-Wei Fang, Xue-Lei Lin, Michael K. Ng, Hai-Wei Sun in Numerische Mathematik (2021)

  4. Article

    Open Access

    Environmental remodeling of human gut microbiota and antibiotic resistome in livestock farms

    Anthropogenic environments have been implicated in enrichment and exchange of antibiotic resistance genes and bacteria. Here we study the impact of confined and controlled swine farm environments on temporal c...

    Jian Sun, **ao-** Liao, Alaric W. D’Souza, Manish Boolchandani… in Nature Communications (2020)

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  5. No Access

    Article

    Circulant preconditioners for a kind of spatial fractional diffusion equations

    In this paper, circulant preconditioners are studied for discretized matrices arising from finite difference schemes for a kind of spatial fractional diffusion equations. The fractional differential operator i...

    Zhi-Wei Fang, Michael K. Ng, Hai-Wei Sun in Numerical Algorithms (2019)

  6. No Access

    Article

    Integration of a Nonlinear Vibration Absorber and Levitation Magnetoelectric Energy Harvester for Whole-Spacecraft Systems

    This paper presents a new device integrating a nonlinear vibration absorber with a levitation magnetoelectric energy harvester for whole-spacecraft systems. This device effectively reduces vibration and has a ...

    Ye-Wei Zhang, Shi-Lei Wang, Zhi-Yu Ni, Zhi-Wei Fang… in Acta Mechanica Solida Sinica (2019)

  7. No Access

    Article

    Vibrations in an elastic beam with nonlinear supports at both ends

    Vibrations in an elastic beam supported by nonlinear supports at both ends under the influence of harmonic forces are analyzed in this study. It is hypothesized that the elastic Bernoulli-Euler beam is support...

    Yi-Ren Wang, Zhi-Wei Fang in Journal of Applied Mechanics and Technical Physics (2015)