We study the optimal auditing of a taxpayer’s income in a dynamic principal-agent model of hidden income. Taxpayers in our model initially have low income and stochastically transit to high income that is an absorbing state. A low-income taxpayer who transits to high income can under-report...

This report describes a simple chemical free method that was successfully used by a team of European and Indian scientists (www.qub.ac.uk/tipot) to remove arsenic (As) from groundwater in a village in West Bengal, India. Six such plants are now in operation and are being used to supply water to...

The bottom of the pyramid (BoP) approach popularised by Prahalad and Hart (2002), calls for the engagement of business with the bottom segment of the global income pyramid, and has attracted considerable attention and debate. The BoP lens is applied chiefly to communities experiencing ?extreme...

This thesis applies mechanism design to explore the roles of outside and inside money in achieving optimal allocations. Two chapters use settings that are related to random-matching models. The third uses an overlapping generations setting. In all three, a critical role is played by assumptions...