Abstract: A substrate analysis apparatus is provided. The substrate analysis includes: an interlayer conveying module configured to transport a first FOUP; an exchange module which is connected to the interlayer conveying module, and configured to transfer a wafer from the first FOUP to a second FOUP; a pre-processing module configured to form a test wafer piece using the wafer inside the second FOUP; an analysis module configured to analyze the test wafer piece; and a transfer rail configured to transport the second FOUP containing the wafer and a tray containing the test wafer piece. The wafer includes a first identifier indicating information corresponding to the wafer, the test wafer piece includes a second identifier indicating information generated by the pre-processing module which corresponds to the test wafer piece, and the analysis module is configured to analyze the first identifier and the second identifier in connection with each other.

Abstract: A module connection system is configured by connecting a plurality of modules by means of connectors. The modules include a base module, a first module and a second module, and the connectors include a first connector and a second connector. The base module transmits power and signals provided from a driving source, the first module is electrically/mechanically connected to the base module by means of the first connector, and the second module is electrically/mechanically connected to the first module by means of the second connector. The first connector includes a larger number of connection terminals in comparison to the second connector in order to transmit power and signals from the base module to the second module and simultaneously supply power and signals required for the first module.

Abstract: A module connection system is configured by connecting a plurality of modules by means of connectors. The modules include a base module, a first module and a second module, and the connectors include a first connector and a second connector. The base module transmits power and signals provided from a driving source, the first module is electrically/mechanically connected to the base module by means of the first connector, and the second module is electrically/mechanically connected to the first module by means of the second connector. The first connector includes a larger number of connection terminals in comparison to the second connector in order to transmit power and signals from the base module to the second module and simultaneously supply power and signals required for the first module.

Abstract: Disclosed herein is a method of reducing slag, including the steps of: examining the components of slag to be reduced, and setting a target composition ratio after reduction; determining the mixing ratio and input amount of a complex reducing agent of a plurality of reducing agents in accordance with the set target composition ratio to determine the complex reducing agent; and supplying the complex reducing agent into molten slag to reduce the slag. The method is advantageous in that the reduction efficiency of slag can be maximized, various kinds of reducing agents can be efficiently used, and the recovery amount of valuable metals can be increased, thus reducing cost.

Abstract: Disclosed herein is a method of reducing slag, including the steps of: examining the components of slag to be reduced, and setting a target composition ratio after reduction; determining the mixing ratio and input amount of a complex reducing agent of a plurality of reducing agents in accordance with the set target composition ratio to determine the complex reducing agent; and supplying the complex reducing agent into molten slag to reduce the slag. The method is advantageous in that the reduction efficiency of slag can be maximized, various kinds of reducing agents can be efficiently used, and the recovery amount of valuable metals can be increased, thus reducing cost.

Abstract: A method for protecting a drive shaft during a reverse shift, may include a step of determining whether a gear shift of a transmission may be the reverse shift, a step of determining a steering angle while the gear shift may be the reverse shift, a step of detecting an RPM of an engine and determining whether the detected RPM of the engine exceeds a preset RPM while the steering angle corresponds to a full steering, a step of determining a torque that may be applied to the drive shaft when the detected RMP of the engine exceeds the preset RPM, a step of determining whether the torque determined in the torque determination step exceeds a limit torque, and a step of reducing the torque when the determined torque exceeds the limit torque.

Abstract: A patch antenna array capable of simultaneously receiving signals polarized in orthogonal or opposite directions, i.e. vertical and horizontal or right-handed and left-handed circular directions, comprises an electrical signal outputting means for outputting electrical signals generated in response to the orthogonally polarized signals through two output feedlines, a plurality of lower patch antennas, a lower feedline with one end that connects to the electrical signal outputting means and the other end that branches out and connects to each of the lower patch antennas, a plurality of upper patch antennas capable of receiving signals with the orthogonal polarizations in relation to signals received by the lower patch antennae, and an upper feedline with one end that connects to the electrical signal outputting means and the other end that branches out and connects to each of the upper patch antennae.

Abstract: An apparatus capable of receiving right-handed and left-handed circularly polarized signals for use in a parabolic reflector antenna comprises a first dielectric plate with a square shape, a square patch antenna prepared in a center of the first dielectric plate, a ground plate located under the first dielectric plate, a cross slot prepared in the ground plate, a second dielectric plate, a signal reception feedline prepared on a bottom surface of the second dielectric plate, a set of two output feedlines prepared on the bottom surface of the second dielectric plate, and a switching circuit enabling the signal reception feedline to receive either the right-handed circularly polarized signal or the left-handed circularly polarized signal. The inventive apparatus is smaller, cheaper, and easier to manufacture than conventional polarizers incorporated in parabolic reflector antennae.