Water quality in China has seriously deteriorated in recent years. However, very few valuation studies have been conducted to estimate the monetary values associated with water quality changes. As a result, the decision makers can hardly make rational choices with regard to investments in water...

After evening out all the benefits and costs, the overall optimal level of democracy is about 3.2, on a scale of 1 to 7. On average, fully dictatorial countries have a conditioned growth rate of ¨C1.113 percent, fully democratic countries have a conditioned growth rate of 1.146 while countries...

A team is assigned to accomplish a task in each infinitely-repeated period. The guide of the team and his followers are allowed to have asymmetric productivity; also the followers have either a hostile or favorable illusion toward the guide. Respective efforts and the followers¡¯ illusion are...