Many products have similar or common attributes and are thus correlated. We show that when these attributes are uncertain for consumers, a complementarity effect can arise among competing products, in the sense that the lower price of one product may increase the demands for the others. This...

Recently, various environmental problems have been generated with the rapid economic development in China. That's because China currently over-emphasized economic development beyond environmental issues; therefore, now it is important to enforce optimal environmental policies in order to achieve...

Increasing scarcity of freshwater resources and growing environmental awareness give rise to the use of reclaimed wastewater as an additional source of water supply. However, the amount of wastewater that can be reclaimed for reuse is subject to many factors, ranging from technical possibility...