The result has been that SCF utilizes all sorts of Shariah-compliant transactional structures to convert the exact same income stream (including its variability by pegging it to an index such as the LIBOR) from interest to something else, such as lease payments.

CENTERFORSECURITYPOLICY: Shariah��s Black Box

The Zen Index uses heart-rate variability to quantify stress levels in a simplified manner, according to the company.

WSJ: Review of Tink�� and HeartMath Inner Balance Sensor for iOS

Heart-rate variability, says Dr Stein, is a good index of the degree of control an individual has over his autonomic nervous system (which controls many of the internal organs).

ECONOMIST: Diet and behaviour