It has been recognized for some time that the spontaneous emission by atoms is not necessarily a fixed and immutable property of the coupling between matter and space, but that ...
A new method for automatic indexing and retrieval is described. The approach is to take advantage of implicit higher-order structure in the association of terms with documents (...
We have carried out an experimental study of weak localization of photons in a rigid, nonabsorbing, disordered medium. Unlike recent results reported for particles in a fluid, w...
We describe two experiments that compare the relative utility of pictures, labels, and the combination of both as navigational aids for computerized catalog browsing. The result...