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.
Depersonalization disorder (DPD) is a mental disorder in which the sufferer has persistent or recurrent feelings of depersonalization and/or derealization. In the DSM-5 it was combined with Derealization Disorder and renamed to Depersonalization/Derealization Disorder (DDPD).In the DSM-5 it remains classified as a dissociative disorder, while in the ICD-10 it is called depersonalization-derealization syndrome and classified as a neurotic disorder.he core symptom of depersonalization-derealization disorder is the subjective experience of unreality in one's sense of self, or detachment from one's surroundings.