In the past China's rural areas, home to 70% of its population, suffered energy shortages.China's indigenous energy resources are limited, with the exception of coal.The widespread use of coal requires large investments in production and transport -making it costly-, and degrades the...

n practice, it is important to evaluate the quality of research, in order to make decisions on tenure, funding, and so on. This article develops a methodology using citations to measure the quality of journals, proceedings, and book publishers. (Citations are also used by the Science and Social...

Sensitivity analysis in investment problems is an important tool to determine which factors can jeopardize the future of the investment.Information on the probability distribution of those factors that affect the investment is mostly lacking.In those situations the analysts have two options: (i)...