Search Results - "Fernando, V. K"

Histological Alterations in the Body Wall of the Tropical Earthworm Eudrilus eugeniae Exposed to Hexavalent Chromium by Fernando, V. K, Perera, I. C, Dangalle, C. D, Premawansa, S, Wijesinghe, M. R

“…The tropical earthworm Eudrilus eugeniae was chronically exposed to hexavalent chromium (Cr) in its substrate over a concentration range from 0.24 to…”
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Accurate ordering of eigenvectors and singular vectors without eigenvalues and singular values by Fernando, K.V.

“…The rank of an eigenvector of an unreduced real symmetric tridiagonal matrix can be determined by just knowing the signs of the elements of the eigenvector and…”
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Computation of exact inertia and inclusions of eigenvalues (singular values) of tridiagonal (bidiagonal) matrices by Fernando, K.V.

“…This report may be considered as a non-trivial extension of an unpublished report by William Kahan ( Accurate Eigenvalues of a symmetric tri-diagonal matrix,…”
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Reachability, observability, and minimality of MIMO systems by Fernando, K.V., Nicholson, H.

“…Reachability and observability of time-variant systems with equal number of inputs and outputs are investigated using the cross-Gramian matrix. A sufficient…”
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Analysis of Passenger Perception on Quality of Service of Railway Transportation: Coastal Railway Line, Sri Lanka by Thilakshan, T., Saranjan, P., Fernando, G. V. K., Bandara, J.M.S.J.

“…The study focuses on assessing passenger perceptions of the service quality of the Sri Lankan Railways, focusing on the Coastal Railway Line in Sri Lanka. To…”
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On the cross-Gramian for symmetric MIMO systems by Fernando, K., Nicholson, H.

“…Recently, Laub et al. [1] and Fernando and Nicholson [2] extended the definition of the cross-Gramian matrix W_{co} to include symmetric MIMO systems where the…”
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On a fundamental property of the cross- Gramian matrix by Fernando, K., Nicholson, H.

“…The cross-Gramian matrix W_{c0} (T) for linear single-input single-output (SISO) dynamical systems has been related to the controllability and observability…”
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Stability assessment of two-dimensional state-space systems by Fernando, K., Nicholson, H.

“…The two-dimensional Fornasini-Marchesini model [1], [2] is one of the most general state-spice models available. Although conditions for stability for this…”
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On the stability of two-dimensional state-space systems: A special case by Fernando, K., Nicholson, H.

“…The stability of two-dimensional state-space systems can be determined by knowing the zero manifolds of the characteristic equation \det(I- z_{1}A_{1} -…”
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On the structure of balanced and other principal representations of SISO systems by Fernando, K., Nicholson, H.

“…A new matrix W co which can be considered as a cross-Gramian matrix which contains information about both controllability and observability is defined for…”
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Linear convergence of the row cyclic Jacobi and Kogbetliantz methods by FERNANDO, K. V

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Singular perturbational approximations for discrete-time balanced systems by Fernando, K., Nicholson, H.

“…A new zero-order singular perturbational type approximation is developed for model reduction of discrete-time linear systems. This approximation is also…”
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Singular perturbational model reduction in the frequency domain by Fernando, K., Nicholson, H.

“…Singular perturbational approximations for linear continuous-time and discrete-time systems are developed in the frequency domain. It is shown that the…”
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On the Cauchy index of linear systems by Fernando, K., Nicholson, H.

“…The Cauchy index for linear SISO systems is given by the signature of the cross-Gramian matrix W co defined by Fernando and Nicholson [1]. This index is useful…”
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Minimality of SISO linear systems by Fernando, K.V., Nicholson, H.

“…A new test for minimality of single-input single-output state-space realizations is proposed based on rank conditions of a cross-Gramian type matrix without…”
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Classification and three-dimensional reconstruction of unevenly distributed or symmetry mismatched features of icosahedral particles by Briggs, John A.G., Huiskonen, Juha T., Fernando, K. Vince, Gilbert, Robert J.C., Scotti, Paul, Butcher, Sarah J., Fuller, Stephen D.

“…Methods for the three-dimensional reconstruction of icosahedral particles, such as spherical viruses, from electron micrographs are well established. These…”
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Singular perturbational model reduction of balanced systems by Fernando, K., Nicholson, H.

“…The balanced representations of linear systems due to Moore are shown to be natural and convenient mediums for singular perturbational model reduction…”
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Shear strength characteristics of mechanically biologically treated (mbt) waste by Fernando, V I. Sudarshana C. K

“…Mechanical biological treatment (MBT) is the generic name for a group of processes which have been used to reduce the biodegradable content of municipal solid…”
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