Abstract: A fish attractor made of transparent plastic has a triangular body having an aperture at the apex and one centrally located in the base, a substantially larger circular opening positioned centrally in the plane of transparent plastic, layers of holographic tape adhered to the sides of the attractor, the layers having circular openings therein corresponding in size to the opening in the transparent plastic, and a circular piece of plastic film larger in diameter than the circular openings in the layers of holographic tape and adhered to one of the layers of holographic tape such that the piece of plastic film is sandwiched between the plane of transparent plastic and the one layer of holographic tape, the piece of plastic film being stretched to provide a dome that vibrates and produces noise as the attractor moves through water.

Abstract: Faults occurring in a telecommunications system are monitored identifying their time of onset and reporting them to an operator through an interface if they have not cleared within a predetermined interval. Transient faults, which do clear within that interval, are not reported directly, but only if such faults occur more frequently than a predetermined rate. This is determined by establishing a scan interval, and an analysis period equal to a plurality of scan intervals, monitoring the system continuously for the occurrences of faults, and storing their times of occurrence in a store. At the end of each scan interval, the number of occurrences of the fault during the analysis period which ends at the end of the scan interval are counted by a counter. If the number of occurrences of the fault in the analysis period is equal to or greater than a threshold value selected by user input, an alarm indicator is activated.

Abstract: A process for the production of an open metal mesh the surfaces of which are coated with a coating of an electrocatalytically-active material, the process comprising forming a plurality of slits in a sheet of metal, applying a coating of an electrocatalytically-active material to the slit sheet, and stretching the coated sheet to expand the sheet and form the open mesh. The mesh is suitable for use as an anode in cathodic protection of steel-containing structures, for example, steel-reinforced concrete structures.