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A correlation-test-based validation procedure for identified neural networks (2009)
Journal Article
Zhang, L. F., Zhu, Q. M., & Longden, A. (2009). A correlation-test-based validation procedure for identified neural networks. IEEE Transactions on Neural Networks, 20(1), 1-13. https://doi.org/10.1109/TNN.2008.2003223

In this study, an enhanced correlation-test-based validation procedure is developed to check the quality of identified neural networks in modeling of nonlinear systems. The new computation algorithm upgrades the validation power by including a direct... Read More about A correlation-test-based validation procedure for identified neural networks.

Development of a new EDRNN procedure in control of human arm trajectories (2008)
Journal Article
Liu, S., Wang, Y., & Zhu, Q. (2008). Development of a new EDRNN procedure in control of human arm trajectories. Neurocomputing, 72(1-3), 490-499. https://doi.org/10.1016/j.neucom.2007.12.012

In this paper the trajectory tracking control of a human arm moving on the sagittal plane is investigated by an interdisciplinary approach with the combination of neural network mapping, evolutionary computation, and dynamic system control. The arm i... Read More about Development of a new EDRNN procedure in control of human arm trajectories.

Adaptive observer-based non-linear stochastic system control with sliding mode schemes (2008)
Journal Article
Liu, J., Qiao, F., Zhu, Q., & Zhang, F. (2008). Adaptive observer-based non-linear stochastic system control with sliding mode schemes. Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 222(7), 681-690. https://doi.org/10.1243/09596518JSCE585

In this paper, an adaptive sliding mode observer is designed to reconstruct the states of non-linear stochastic systems with uncertainties from the measurable system output and the reconstructed states are employed to construct a sliding mode control... Read More about Adaptive observer-based non-linear stochastic system control with sliding mode schemes.

Development of omni-directional correlation functions for nonlinear model validation (2007)
Journal Article
Zhu, Q. M., Feng Zhang, L., & Longden, A. (2007). Development of omni-directional correlation functions for nonlinear model validation. Automatica, 43(9), 1519-1531. https://doi.org/10.1016/j.automatica.2007.02.010

In the present study a set of first order correlation functions are proposed to examine the quality of a wide class of identified nonlinear models. The first order correlation functions, defined as omni-directional correlation functions, are integrat... Read More about Development of omni-directional correlation functions for nonlinear model validation.

Stable adaptive neurocontrol for nonlinear discrete-time systems (2004)
Journal Article
Zhu, Q., & Guo, L. (2004). Stable adaptive neurocontrol for nonlinear discrete-time systems. IEEE Transactions on Neural Networks, 15(3), 653-662. https://doi.org/10.1109/TNN.2004.826131

This paper presents a novel approach in designing neural network based adaptive controllers for a class of nonlinear discrete-time systems. This type of controllers has its simplicity in parallelism to linear generalized minimum variance (GMV) contro... Read More about Stable adaptive neurocontrol for nonlinear discrete-time systems.

A fast convergent extended Kalman observer for nonlinear discrete-time systems (2002)
Journal Article
Guo, L. Z., & Zhu, Q. (2002). A fast convergent extended Kalman observer for nonlinear discrete-time systems. International Journal of Systems Science, 33(13), 1051-1058. https://doi.org/10.1080/0020772021000046225

A new extended Kalman observer for nonlinear discrete-time systems is derived. As always, stability and convergence rate depend directly on the matrices Qk and Rk and the initial state estimation error, the new observer has made improvement on these... Read More about A fast convergent extended Kalman observer for nonlinear discrete-time systems.

A pole placement controller for nonlinear dynamic plants (2002)
Journal Article
Zhu, Q., & Guo, L. Z. (2002). A pole placement controller for nonlinear dynamic plants. Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 216(6), 467-476. https://doi.org/10.1177/095965180221600603

In this study a control-oriented model is proposed to represent a wide range of non-linear discrete-time dynamic plants. As a testimony to the efficiency of the model structure for control system design, a pole placement controller is designed for no... Read More about A pole placement controller for nonlinear dynamic plants.

Urine flow rate shape template and intermittent flow in males
Presentation / Conference
Li, R., Gammie, A., Zhu, Q., & Nibouche, M. Urine flow rate shape template and intermittent flow in males. Presented at International Continence Society annual meeting 2018

Uroflowmetry serves as a preliminary urodynamic test for physicians to indicate the possible cause of lower urinary tract symptoms. Alongside the most researched parameter maximum flow rate (Qmax), the shape of urine flow rate curve is also reported... Read More about Urine flow rate shape template and intermittent flow in males.

Multivariate analysis of variance for maximising the diagnosing accuracy in differentiating DU from BOO in males
Presentation / Conference
Li, R., Gammie, A., Zhu, Q., & Nibouche, M. Multivariate analysis of variance for maximising the diagnosing accuracy in differentiating DU from BOO in males. Presented at International Continence Society annual meeting 2018

Detrusor underactivity (DU) and bladder outlet obstruction (BOO) bother almost half of elder men. Although the treatment is different for these two lower urinary tract symptoms, invasive pressure flow studies remains the only gold standard for diagno... Read More about Multivariate analysis of variance for maximising the diagnosing accuracy in differentiating DU from BOO in males.

Median frequency and sum of amplitude changes in rising slope: Two potential non-invasive indicators for differentiating DU from BOO in males
Presentation / Conference
Li, R., Gammie, A., Zhu, Q., & Nibouche, M. Median frequency and sum of amplitude changes in rising slope: Two potential non-invasive indicators for differentiating DU from BOO in males. Presented at International Continence Society annual meeting 2018

It remains a challenge to non-invasively differentiate detrusor underactivity (DU) from bladder outlet obstruction (BOO) in males, and the gold standard is pressure flow studies, which is invasive, relatively expensive and may cause bleeding and infe... Read More about Median frequency and sum of amplitude changes in rising slope: Two potential non-invasive indicators for differentiating DU from BOO in males.

Mathematical modelling analysis of male urine flow traces
Presentation / Conference
Li, R., Gammie, A., Zhu, Q., & Nibouche, M. Mathematical modelling analysis of male urine flow traces

Differentiating non-invasively detrusor underactivity (DU) from bladder outlet obstruction (BOO) in men remains a challenge. Invasive pressure flow studies (PFS) are still required despite many years of study. The shape of the urine free flow curve... Read More about Mathematical modelling analysis of male urine flow traces.

Mathematical modelling analysis of male urine flow traces
Presentation / Conference
Li, R., Gammie, A., Zhu, Q., & Nibouche, M. Mathematical modelling analysis of male urine flow traces

Differentiating non-invasively detrusor underactivity (DU) from bladder outlet obstruction (BOO) in men remains a challenge. Invasive pressure flow studies (PFS) are still required despite many years of study. The shape of the urine free flow curve h... Read More about Mathematical modelling analysis of male urine flow traces.