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  1. No Access

    Article

    Association between aspirin use and risk of dementia: a systematic review and meta-analysis

    This review aims to provide an up-to-date summary of the existing evidence and evaluate the association between low-dose aspirin and the onset of dementia and Alzheimer’s disease.

    Tao Tao, Guohua Feng, Yuanyuan Fang in European Geriatric Medicine (2024)

  2. No Access

    Article

    Determinants of profitability of community banks in the USA: a cost-frontier-based decomposition approach

    This paper investigates the determinants of the poor profitability of community banks relative to that of large banks in the USA over the period 2001–2017, by decomposing the relative profitability of communit...

    Guohua Feng, Chuan Wang in Empirical Economics (2021)

  3. No Access

    Article

    Estimation of inefficiency in stochastic frontier models: a Bayesian kernel approach

    We propose a kernel-based Bayesian framework for the analysis of stochastic frontiers and efficiency measurement. The primary feature of this framework is that the unknown distribution of inefficiency is appro...

    Guohua Feng, Chuan Wang, **bin Zhang in Journal of Productivity Analysis (2019)

  4. Article

    Open Access

    Estimation of technical change and price elasticities: a categorical time–varying coefficient approach

    We propose a categorical time-varying coefficient translog cost function, where each coefficient is expressed as a nonparametric function of a categorical time variable, thereby allowing each time period to ha...

    Guohua Feng, Jiti Gao, **aohui Zhang in Journal of Productivity Analysis (2018)

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  5. No Access

    Article

    Shadow prices of \(\hbox {CO}_{2}\) emissions at US electric utilities: a random-coefficient, random-directional-vector directional output distance function approach

    We estimate the shadow prices of \(\hbox {CO}_{2}\) ...

    Guohua Feng, Chuan Wang, Apostolos Serletis in Empirical Economics (2018)

  6. No Access

    Article

    Productivity and efficiency at bank holding companies in the U.S.: a time-varying heterogeneity approach

    This paper investigates the productivity and efficiency of large bank holding companies (BHCs) in the United States over the period 2004–2013, by estimating a translog stochastic distance frontier (SDF) model ...

    Guohua Feng, Bin Peng, **aohui Zhang in Journal of Productivity Analysis (2017)

  7. No Access

    Article

    HCV-specific interleukin-21+CD4+ T cells responses associated with viral control through the modulation of HCV-specific CD8+ T cells function in chronic hepatitis C patients

    Interleukin-21 (IL-21)+CD4+ T cells are involved in the immune response against hepatitis B virus (HBV) by secreting IL-21. However, the role of IL-21+CD4+ T cells in the immune response against chronic hepati...

    Guohua Feng, Ji-Yuan Zhang, Qing-Lei Zeng, Lei **, Junliang Fu… in Molecules and Cells (2013)

  8. No Access

    Article

    High-energy resolution μ-XRF analysis by position sensitive spectrometer

    With a high-energy resolution micro-X-ray fluorescence (μ-XRF) analysis setup, which basically consists of an X-ray microbeam formed by an X-ray focusing lens combined with an X-ray apparatus and a wavelength ...

    Zhaohui Hu, Shijie Liu, **sheng Liu, Guohua Feng, Yong Han in Chinese Science Bulletin (2000)