Abstract: Disclosed is a medical motor drill having an angle adjusting function. The medical motor drill includes a main body, a shaft connected to the main body, a drill unit connected to the shaft so as to be bendable relative to the shaft, the drill unit including a motor configured to receive power from the main body and a drill blade configured to be rotated by the motor, a drive force transmission unit configured to bend the drill unit relative to the shaft, and an angle adjustment unit connected to the drive force transmission unit to adjust a bending degree of the drill unit. The medical motor drill has advantages of enabling drilling over a wide range in a state in which a drill manipulation position is fixed and of enabling adjustment in the angle of the drill unit that is located distant from a user manipulation position.

Abstract: An oven that has an improved structure so that the convenience of use and the energy efficiency may be improved includes a casing that has a front panel, a cooking chamber that is provided inside the casing, a door that is rotatably disposed in the casing so as to open and close the cooking chamber, and has a frame, and an individual door that is rotatably provided in the frame so as to open and close an opening provided in the frame.

Abstract: A method is described for avoiding gyroscopic singularities during attitude correction to a system, such as a spacecraft having a CMG array. The method receives a corrective torque vector ? and gimbal angle values ? for each of at least three gimbals within the CMG array. The method generates a Jacobian matrix A as a function of gimbal angle values ?. The method calculates a determinant D of Jacobian matrix A. If the determinant is not equal to zero, it is not singular, and the method calculates a gimbal rate {dot over (?)} using a pseudo-inverse steering law equation. If the determinant is equal to zero, it is singular, and the method calculates a gimbal rate {dot over (?)} using a singularity avoidance steering law equation. The gimbal rate {dot over (?)} is output and can be applied to a CMG array resulting in applied torque to a spacecraft and attitude correction.

Abstract: Provided is a batch fabrication method of three-dimensional photonic microstructures including a support structure fabricating step, a variable structure fabricating step, a thermal reflow step, and a three-dimensional photonic microstructure forming step. The batch fabrication method of three-dimensional photonic microstructures fabricates three-dimensional photonic microstructures having several shapes depending on a demand of a user through these steps.

Abstract: Disclosed are a cover bottom, which includes a plurality of LED frames with an LED array adhered thereto and a plurality of reinforcing frames coupled to the LED frames in a lattice type, and a display device using the same. The cover bottom includes at least two or more light emitting diode (LED) frames, to which an LED array is adhered, and at least two or more reinforcing frames coupled to the LED frames in a lattice type.