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Diffractive features on lenses are widely used in thermal imaging instruments for chromatic aberration correction and provide a good tool to optical designer for minimizing aberrations and designing a compact imaging system. The measurement of diffractive surface is a challenging task and a standard method used to qualify a diffractive lens is the sag deviation from the designed lens profile. Imperfections...
This article introduces a hypothesis predicting when we should see split-ticket voting in ‘patronage democracies’ derived from a model of strategic voting for ethnic parties. It supports the model based on an examination of the behaviour of Scheduled Caste voters in the north-Indian state of Uttar Pradesh across national and regional elections in 1996 using multiple sources of data: an EI analysis...
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