Check your grammar now! : a number or function that indicates the degree of correlation between two sets of data or between two random variables and that is equal to their covariance divided by the product of their standard deviations.
Dematerialization. In economics, dematerialization refers to the absolute or relative reduction in the quantity of materials required to serve economic functions in society. In common terms, dematerialization means doing more with less. This concept is similar to ephemeralization as proposed by Buckminster Fuller. Dematerialization is the counterargument to the idea that economics is only about 'more is better.' The idea that more is better, a common activist argument which likens economic logic to the logic of a cancer cell, ignores the differences between inputs and outputs, and it ignores the ratio of inputs to outputs.
Decentralization is the process of redistributing or dispersing functions, powers, people or things away from a central location or authority. While decentralization, especially in the governmental sphere, is widely studied and practiced, there is no common definition or understanding of decentralization.