is an information-theoretic measure of the dissimilarity between q = q 1, • • · ,qn and p = p 11 • • • , pn (H is also called cross-entropy, discrimination information, directed divergence, !-divergence, K-L number, among other terms). Various properties of relative entropy have led to its widespread use in information theory. These properties suggest that relative entropy has a role to play in...

wear is a complicated phenomenon caused by the relative movement of two contacting surfaces compressed together by a normal force. prediction of the wear, in most cases, requires various experiments and microstructural characterization of the contacting surfaces. mathematical models based on physical concepts could provide considerable help in understanding the physical behavior and hence the p...