Abstract: A receiver for detecting a stream of optical data bits which are transmitted at a predetermined frequency includes a plurality of optically-active devices arranged on an integrated circuit substrate in an array. The plurality of optically-active devices are capable of being positioned to receive the stream of optical data bits which are transmitted as light, and each of the optically active devices is capable of detecting light in an optically active state and generating a detected signal corresponding thereto. A control circuit receives a clock signal at a rate corresponding to the predetermined frequency and generates control signals which cause a different one of the plurality of optically-active devices to be in the optically active state during each successive period and thereby detect the presence of light during each of said successive periods and generate the detected signals corresponding to the data bit stream.

Abstract: The present invention provides a method for setting parameters required for any type of blasting operation using a bar-like charge system by devising equations based on which the maximum blasting efficiency may be achieved within a safe range to prevent flying rock accidents even when the line of least resistance W or filler length P is unknown. When defining a blast hole diameter, i.e., charge diameter as d, a charge hole length as M, a filler length as P, a charge length N=M-P, a fracture radius or interval length as D, and the specific gravity of charge as A, if the charge hole angle with respect to the first free surface G1, is .alpha..ltoreq.90.degree.

Abstract: A trailer body construction including side panels, a roof and floor. The upper ends of the side panels and roof are supported by a top rail and the lower ends of the side panels and floor are supported by a frame assembly. The top rail includes a horizontal leg having a wing member extending from the horizontal leg end and a substantially vertical leg having a ledge extending therefrom. The side panels comprise a plurality of vertical side plates having substantially abutting edges, a plurality of side laps respectively covering each pair of side plates, and a plurality of side posts overlying the side laps and plates. The side posts include flange portions that abut the side laps to form box-like side posts.