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  • On the performance of VSI S... On the performance of VSI Shewhart control chart for monitoring the coefficient of variation in the presence of measurement errors
    Nguyen, Huu Du; Nguyen, Quoc Thong; Tran, Kim Phuc ... International journal of advanced manufacturing technology, 09/2019, Volume: 104, Issue: 1-4
    Journal Article
    Peer reviewed
    Open access

    In this paper, we propose a variable sampling interval Shewhart control chart to monitor the coefficient of variation (CV) squared, denoted by VSI SH- γ 2 . The new model overcomes the ARL-biased ...
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  • Asymptotic behaviors of sto... Asymptotic behaviors of stochastic epidemic models with jump-diffusion
    Thanh Dieu, Nguyen; Fugo, Takasu; Huu Du, Nguyen Applied Mathematical Modelling, October 2020, 2020-10-00, 20201001, Volume: 86
    Journal Article
    Peer reviewed

    •Classify the asymptotic behavior SIR models with noise perturbing to linear terms.•Construct a threshold value based on coefficients.•The negativity of threshold implies the extinction of the model ...
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  • The Shewhart-type RZ contro... The Shewhart-type RZ control chart for monitoring the ratio of autocorrelated variables
    Nguyen, Huu Du; Nadi, Adel Ahmadi; Tran, Kim Duc ... International journal of production research, 10/2023, Volume: 61, Issue: 20
    Journal Article
    Peer reviewed
    Open access

    In many industrial manufacturing processes, the quality of products can depend on the relative amount between two quality characteristics X and Y. Often, this calls for the on-line monitoring of the ...
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  • On the performance of CUSUM... On the performance of CUSUM control charts for monitoring the coefficient of variation with measurement errors
    Tran, Kim Phuc; Nguyen, Huu Du; Tran, Phuong Hanh ... International journal of advanced manufacturing technology, 10/2019, Volume: 104, Issue: 5-8
    Journal Article, Web Resource
    Peer reviewed
    Open access

    In this paper, we investigate the effect of the measurement error on the performance of the cumulative sum (CUSUM) control charts monitoring the coefficient of variation. The measurement errors are ...
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  • Effect of the measurement e... Effect of the measurement errors on two one‐sided Shewhart control charts for monitoring the ratio of two normal variables
    Du Nguyen, Huu; Phuc Tran, Kim Quality and reliability engineering international, July 2020, Volume: 36, Issue: 5
    Journal Article
    Peer reviewed
    Open access

    Monitoring the ratio between two random normal variables plays an important role in many industrial manufacturing processes. In this paper, we suggest designing two one‐sided Shewhart control charts ...
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  • Monitoring the ratio of two... Monitoring the ratio of two normal variables using variable sampling interval exponentially weighted moving average control charts
    Nguyen, Huu Du; Tran, Kim Phuc; Heuchenne, Cédric Quality and reliability engineering international, February 2019, Volume: 35, Issue: 1
    Journal Article, Web Resource
    Peer reviewed
    Open access

    We investigate in this paper a new type of control chart called VSI EWMA‐RZ by integrating the variable sampling interval feature (VSI) with the exponentially weighted moving average (EWMA) scheme to ...
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  • CUSUM control charts with v... CUSUM control charts with variable sampling interval for monitoring the ratio of two normal variables
    Nguyen, Huu Du; Tran, Kim Phuc; Heuchenne, Henri L. Quality and reliability engineering international, March 2020, Volume: 36, Issue: 2
    Journal Article
    Peer reviewed
    Open access

    In many industrial manufacturing processes, the ratio between two normal random variables plays a key role in ensuring quality of products. Thus,  monitoring this ratio is an important task that is ...
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  • On the effect of the measur... On the effect of the measurement error on Shewhart t and EWMA t control charts
    Nguyen, Huu Du; Tran, Kim Phuc; Celano, Giovanni ... International journal of advanced manufacturing technology, 04/2020, Volume: 107, Issue: 9-10
    Journal Article
    Peer reviewed

    In the industrial practice, control charts are frequently implemented assuming that the quality characteristic of interest can be accurately measured without errors. In general, this assumption is ...
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  • A staggered cell‐centered f... A staggered cell‐centered finite element method for Stokes problems with variable viscosity on general meshes
    Huu Du, Nguyen; Ong, Thanh Hai Numerical methods for partial differential equations, March 2023, 2023-03-00, 20230301, Volume: 39, Issue: 2
    Journal Article
    Peer reviewed

    In this paper, we propose to extend the staggered cell‐centered finite element method (SCFEM) on general meshes for the Stokes problems with variable viscosity (possibly discontinuous). The scheme is ...
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