Search Results - "Hammond, J.K."

Physical and geometrical interpretation of fractional operators by Moshrefi-Torbati, M., Hammond, J.K.

“…In this paper an interpretation of fractional operators in the time domain is given. The interpretation is based on the four concepts of fractal geometry,…”
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PBDW: A non-intrusive Reduced Basis Data Assimilation method and its application to an urban dispersion modeling framework by Hammond, JK, Chakir, R, Bourquin, F, Maday, Y

“…The challenges of understanding the impacts of air pollution require detailed information on the state of air quality. While many modeling approaches attempt…”
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The interpretation of the bispectra of vibration signals by Fackrell, J.W.A., White, P.R., Hammond, J.K., Pinnington, R.J., Parsons, A.T.

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Meta-modeling of a simulation chain for urban air quality by Hammond, J. K., Chen, R., Mallet, V.

“…Urban air quality simulation is an important tool to understand the impacts of air pollution. However, the simulations are often computationally expensive, and…”
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A non-parametric approach for linear system identification using principal component analysis by Tan, M.H., Hammond, J.K.

“…This paper considers the applications of principal component analysis (PCA) for signal-based linear system identification. Linear time-invariant (LTI)…”
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Analysis of the maximum likelihood, total least squares and principal component approaches for frequency response function estimation by White, P.R., Tan, M.H., Hammond, J.K.

“…This paper considers the problem of estimation frequency response functions (FRFs) for a single-input single-output (SISO) system in the presence of additive…”
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THE ANALYSIS OF NON-STATIONARY SIGNALS USING TIME-FREQUENCY METHODS by Hammond, J.K., White, P.R.

“…This paper deals with the time–frequency analysis of deterministic and stochastic non-stationary signals. It includes the following: a brief review of the…”
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HIGHER-ORDER SPECTRA: THE BISPECTRUM AND TRISPECTRUM by Collis, W.B., White, P.R., Hammond, J.K.

“…This paper is concerned with the development of techniques to detect and analyse non-linearities. The methods developed are based on the concepts of…”
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Iterative SVD method for noise reduction of low-dimensional chaotic time series by Shin, K., Hammond, J.K., White, P.R.

“…A new simple method using singular value decomposition (SVD) is presented for reducing noise from a sampled signal where the deterministic signal is from a…”
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THE INSTANTANEOUS LYAPUNOV EXPONENT AND ITS APPLICATION TO CHAOTIC DYNAMICAL SYSTEMS by Shin, K., Hammond, J.K.

“…Any system containing at least one positive Lyapunov exponent is defined to be chaotic and the system dynamics become unpredictable. For a mechanical system,…”
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Studies of three-dimensional electrodes in the FMO1-LC laboratory electrolyser by Brown, C.J., Pletcher, D., Walsh, F.C., Hammond, J.K., Robinson, D.

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EXPERIMENTAL STUDY OF THE VIBRATIONAL BEHAVIOUR OF A COUPLED NON-LINEAR MECHANICAL SYSTEM by BOLTEŽAR, M., HAMMOND, J.K.

“…The article describes an experimental analysis devised to determine the responses of a multi-degree-of-freedom non-linear mechanical system to various types…”
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PSEUDO FORCE–STATE MAPPING METHOD: INCORPORATION OF THE EMBEDDING AND FORCE–STATE MAPPING METHODS by Shin, K., Hammond, J.K.

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THE INTERPRETATION OF SINGULAR VALUES IN THE INVERSION OF MINIMUM AND NON-MINIMUM PHASE SYSTEMS by Hashemi, S., Hammond, J.K.

“…The inversion of a causal linear system may be described in matrix terms. The system matrix so formed has a lower triangular Toeplitz form, and its inverse may…”
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FORCE-STATE MAPPING METHOD OF A CHAOTIC DYNAMICAL SYSTEM by Shin, K., Hammond, J.K.

“…This paper is concerned with the system identification of an experimental chaotic system. A conventional double-well potential vibrator is modified to…”
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THE EFFECTS OF BILINEAR MAPPING OF NON-LINEAR SYSTEMS by Shin, K., Hammond, J.K.

“…The bilinear mapping method is very important in designing digital filters from analogue filters for linear systems, because it provides a very simple…”
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TIME–FREQUENCY SPECTRA FOR FREQUENCY-MODULATED PROCESSES by Dalianis, S.A., Hammond, J.K.

“…Time–frequency spectra are accepted as a useful approach to characterising non-stationary phenomena. However, most applications are empirical and there is…”
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Estimation of parameters of a non-stationary random process due to a moving source based on the covariance-equivalent model by Lee, Jong-Sik, Hammond, J.K.

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Time-varying filter modelling of the sound field due to a moving source and time-delay estimation by Lee, J.S., Hammond, J.K.

“…In many measurement situations sources are in motion, and the source motion can significantly degrade the correlator output since the time delay varies during…”
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The Wigner distribution, multi-equilibria nonlinear systems and chaotic behaviour by Adamopoulos, P.G., Hammond, J.K., Lee, J.S.

“…The Wigner distribution and chaotic behavior of systems have recently received considerable attention: the Wigner-Ville distribution, due to its advantageous…”
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