Abstract: Data are received that represents current prices of options on a given asset. An estimate is derived from the data of a corresponding implied probability distribution of the price of the asset at a future time. Information about the probability distribution is made available within a time frame that is useful to investors, for example, promptly after the current option price information becomes available.

Abstract: A vitreous bonded abrasive article, more particularly a grinding wheel, having improved grinding performance is provided wherein the open pores of the abrasive article contain an impregnant which comprises at least one water insoluble, sulfur bearing organic substance having at least one carbon to sulfur bond, at least about 5% by weight sulfur and a melting point of at least about 30° C. said melting point being at least 10° C. below the decomposition temperature of the substance and selected from the group consisting of substituted and unsubstituted aliphatic, aromatic, cycloaliphatic, alkenyl, alkynyl, alkylaryl, arylalkyl and substituted heterocyclic sulfur bearing organic substances or a mixture of said substances grinding aid. The impregnant is free of a medium, other than the water insoluble, sulfur bearing substance, in which the substance or a mixture of such substances is dissolved or dispersed.

Abstract: A spill deck module includes a substantially planar bottom wall, a pair of opposing side walls and a pair of opposing end walls which form an interior chamber. Each side wall and end wall includes an aperture allowing fluid communication between adjacent modules. Initially, the side wall and end wall apertures are closed by a removable sealing assembly. When a number of modules are desired to be arranged to form a composite spill deck, the sealing assemblies in adjacent modules are removed and replaced with module connection assemblies allowing fluid transfer between adjacent modules. A deck grating either rests on the bottom surface of the spill deck or rests on top of ribs provided in each module. The grating forms a continuous spill deck for support of containers of hazardous or non-hazardous liquid materials in various configurations using different combinations of the spill decks.