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Correcting the Concentration Index: A reply to Wagstaff
Journal of Health Economics, 2009Abstract In this note, I reply to Adam Wagstaff's criticism of my corrected version of the Concentration Index for bounded health variables. I focus on three issues: (1) Wagstaff's suggestions with regard to the scale invariance property; (2) his distinction of relative and absolute inequality; and (3) a comparison of Wagstaff's index W with my index
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Concentration Measurement with Refractive Index
Genetic Engineering & Biotechnology News, 2015Mike W. Johnson, Eric Isberg
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Evaluating Equity Curves via Concentration Indexes
2012Comparing trading systems performances has been traditionally addressed using ratios that allow to get a ranking. The popularity of a ratio depends on its simplicity i.e. on its capability both to be easily computed, and to get results that can be intepreted with reasonably lower efforts.
RESTA, MARINA +2 more
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Engineered Graded-Index Optical Concentrators
2016Nonimaging optical concentrators including engineered inhomogeneous material are able to achieve simultaneously high optical efficiency and acceptance solid angle at a given geometrical concentration factor. This new technology is proposed and described; a comparison in terms of optical efficiency, field of view and concentration factor is provided ...
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Near-zero-index materials for photonics
Nature Reviews Materials, 2019Nathaniel Kinsey +2 more
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