We study the drivers of geographic variation in US health care utilization, using an empirical strategy that exploits migration of Medicare patients to separate the role of demand and supply factors. Our approach allows us to account for demand differences driven by both observable and unobservable patient characteristics. Within our sample of over-65 Medicare beneficiaries, we find that 40-50 ...

Egypt is considering initiatives to deploy renewable energies, such as solar and wind; these would be financed through national and international public funds and private investment. Direct and induced impacts of investments could be significant drivers of socioeconomic development in Egypt, which currently has high level of poverty and unemployment plus volatile economic growth due to recent p...

This paper addresses the inventory penalty pricing problem under risk-neutral valuation principle. In particular, we consider an inventory driven by a constant replenishment rate and compound renewal demand stream (iid demand inter-arrival time and iid demand quantity), and subject to overage penalties and underage penalties. Our solution approach treats the inventory penalties of overage and u...

We study the drivers of geographic variation in U.S. health care utilization, using an empirical strategy that exploits migration of Medicare patients to separate the role of demand and supply factors. Our approach allows us to account for demand differences driven by both observable and unobservable patient characteristics. Within our sample of over-65 Medicare beneficiaries, we find that 40–5...

We show a range of complexity results for the Ricardo and Heckscher-Ohlin models of international trade (as Arrow-Debreu production markets). For both models, we show three types of results: 1. When utility functions are Leontief and production functions are linear, it is NP-hard to decide if a market has an equilibrium. 2. When utility functions and production functions are linear, equilibria ...