Abstract: Feedback is provided to employees regarding inventory levels or sales revenue levels. The feedback may alert, for example, inventory managers to inventory characteristics that call for analysis, investigation, and responsive action. A company may thereby better manage its inventory, save money, and more efficiently produce its products.

Abstract: A road information communicating system is provided in which a central communication system communicates with vehicles using a network of distributed information processing units. Each of these distributed information processing units is able to receive local road information and compute a set of local coordinates corresponding to that local road information. It is then able to relay that information to the central unit and receive like information from other distributed units. The information is then prioritized, and a subset of that prioritized data is selected and transmitted to vehicles in the coverage area.

Abstract: The improved multilayered thin ferroelectric film includes a substrate, a first polycrystalline ferroelectric layer that is formed on the substrate, that has high density and a refractive index of the single-crystal grade but whose surface is not optically smooth, and a second polycrystalline ferroelectric layer that is formed on the first polycrystalline ferroelectric layer, that has a comparatively low density, that has a lower refractive index than the single crystal but which has an optically smooth surface. This multilayered thin ferroelectric film is produced by a process that comprises applying more than one coat of a solution of an organometallic compound to the substrate and performing more than one cycle of heat treatments, provided that firing for the formation of the first polycrystalline ferroelectric layer is conducted in a temperature range of 400.degree. to 1,000.degree. C.

Abstract: The improved multilayered thin ferroelectric film includes a substrate, a first polycrystalline ferroelectric layer that is formed on the substrate, that has high density and a refractive index of the single-crystal grade but whose surface is not optically smooth, and a second polycrystalline ferroelectric layer that is formed on the first polycrystalline ferroelectric layer, that has a comparatively low density, that has a lower refractive index than the single crystal but which has an optically smooth surface.