Research Interests:
Research Interests:
AbstractThis paper studies sampled-data control of nonlinear systems using high-gain observers. The observer is designed in con-tinuous time, then discretized using three different discretization methods. Closed-loop analysis shows that... more
AbstractThis paper studies sampled-data control of nonlinear systems using high-gain observers. The observer is designed in con-tinuous time, then discretized using three different discretization methods. Closed-loop analysis shows that the sampled-data con-troller ...
Research Interests:
Research Interests:
Post-kala-azar dermal leishmaniasis (PKDL) is a complication of visceral leishmaniasis (VL); it is characterised by a macular, maculopapular, and nodular rash in a patient who has recovered from VL and who is otherwise well. The rash... more
Post-kala-azar dermal leishmaniasis (PKDL) is a complication of visceral leishmaniasis (VL); it is characterised by a macular, maculopapular, and nodular rash in a patient who has recovered from VL and who is otherwise well. The rash usually starts around the mouth from where it ...
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests: Tropical Medicine, Adolescent, Tropical medicine (Health Sciences), Sudan, Spleen, and 18 moreHumans, Child, Female, Animals, Male, Visceral Leishmaniasis, Bone marrow, Middle Aged, Adult, Public health systems and services research, Time Factors, Protozoan Proteins, Sensitivity and Specificity, Recombinant Proteins, Enzyme Linked Immunosorbent Assay, immunoglobulin G, Lymph nodes, and Child preschool
This article presents the technical aspects of a linear filter, referred to as eigenimage filtering, and its applications in magnetic resonance (MR) imaging. The technique is used to obtain a single composite image depicting a particular... more
This article presents the technical aspects of a linear filter, referred to as eigenimage filtering, and its applications in magnetic resonance (MR) imaging. The technique is used to obtain a single composite image depicting a particular feature of interest while suppressing one or more interfering features. The appropriate weighting components to be used in the linear filter are determined on the criterion that the desired feature is enhanced while the interfering features are suppressed. The criterion is expressed mathematically as a ratio. By applying Rayleigh's principle, the ratio is maximized by finding the eigenvector associated with the maximum eigenvalue of the corresponding generalized eigenvalue problem. The appropriate weighting factors for the linear filter are the elements of the eigenvector which maximize the ratio. The utilization of the technique is demonstrated in its application to a simulated MR image sequence as well as to acquired MR image sequences of a normal and an abnormal brain.