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Controlled island operation of part of the 50-kV grid in Southern Sweden

Abstract in UndeterminedThis paper is based on measurements obtained during a test of controlled islanding of part of the 50-kV grid in Southern Sweden. The purpose of the test was to verify operation of generator controls during islanding. The variations in voltage magnitude and frequency are shown as well as flicker severity and very-short variations. A number of performance indices have been ca

Test Planning for Core-based 3D Stacked ICs under Power Constraints

Test planning for core-based 3D stacked ICs under power constraint is different from test planning for non-stacked ICs as the same test schedule cannot be applied both at wafer sort and package test. In this paper, we assume a test flow where each chip is tested individually at wafer sort and jointly at package test. We define cost functions and test planning optimization algorithms for non-stacke

New schemes for trellis source coding at various rates

Some earlier trellis source coding methods are extended to new sources and new rates above and below one. The new schemes have in common a code design based on branch correlation and an encoder based on both the Viterbi algorithm and tailbiting MAP techniques, The results from these simple schemes often exceed that of all previous methods with similar complexity.

Eccentric correction in central visual field loss

It is not often that one is instantaneously able to apply the results of basic research. This work is an example of such an exception. A widely held conviction has been that human peripheral vision could not be improved through optical correction. It w