Abstract: A highly integrated computer-implemented system for authoring multimedia applications is disclosed. The system includes an object-oriented database for simplifying manipulation of media resources and an authoring tool for defining the details of a multimedia application. The authoring tool is divided into screen editor and iconic editor panes, wherein operators can create interactions by wiring together icons representative of object modules.

Abstract: A laminated ballast core is provided comprising a plurality of nearly identically shaped lamination pieces. Each lamination piece is of a general L-shape and has a notch at the upper outside corner of the base section and a tab extending from the upper outside corner of the shorter side section. About one-half of the lamination pieces are aligned adjacent each other to form an upper lamination section. The other half of the lamination pieces are aligned adjacent each other to form a lower lamination section. The upper lamination section is placed on the lower lamination section such that the tabs and corresponding notches are in contact. The height of the tabs and depth of the notches are proportioned such that a gap of preselected width extends between the edge of the upper portion of the side sections and the adjacent portion of the base section.

Abstract: Water-soluble salts of low-molecular weight polyacrylic acids function synergistically with inorganic salts to obtain superior reduction of water demand of dispersed inorganic solids. The disclosed invention is particularly adapted for use in the wet-grinding process for preparing portland cement.

Abstract: Water-soluble copolymers prepared from styrene and maleic anhydride and the water-soluble salts and partial esters thereof function synergistically with inorganic salts to obtain superior reduction of water demand of dispersed inorganic solids. The disclosed invention is particularly adapted for use in the wet-grinding process for preparing portland cement.