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A subwavelength-modulated dielectric nonlinear Lüneburg lens is proposed and numerically verified. In the linear limit, the structure focuses a plane wave to an ideal geometrical point image. In the presence of Kerr nonlinearity, focal shift to a Gaussian beam input is compensated at a tunable intensity value. Nonlinear Lüneburg lens is also capable of finite conjugate imaging. A modified aperiodic...
Due to the progress of nanometer process technologies, variability of circuit parameters is increasing and the statistical static timing analysis (S-STA) has been studied intensively. The existing block-based S-STA algorithms assume that the distribution of delay of each circuit element does not change through the analysis. However, such a delay depends on the input-slew, and the slew to be considered...
In this paper, two weighted distance measures; the weighted K-L divergence and the Bayesian criterion-based distance measure are proposed to efficiently reduce the Gaussian mixture components in the HMM-based acoustic model. Conventional distance measures such as the K-L divergence and the Bhattacharyya distance consider only distribution parameters (i.e. mean and variance vectors of Gaussian pdfs)...
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