Abstract: The present invention provides: an ethylene oligomerization method in which an ethylene oligomer is produced by reacting a chromium complex, an organic aluminium compound, and an organic zinc compound with ethylene; and the ethylene oligomer thereof.

Abstract: A brake device for a vehicle according to the present disclosure includes: a caliper body configured to surround a brake disc; a pair of brake pads disposed in the caliper body so as to face each other and respectively positioned at two opposite sides of the brake disc; a screw bar installed in the caliper body and configured to be rotatable by power from a motor unit; a nut unit configured to be rectilinearly moved by a rotation of the screw bar; a piston unit configured to surround an outer portion of the nut unit and press any one of the pair of brake pads by moving together with the nut unit; a bearing unit configured to support a rotation of the screw bar and be moved by a repulsive force of the screw bar; and a load switch unit installed in the caliper body, disposed to face the bearing unit, and configured to operate by being pressed by the bearing unit.

Abstract: There is provided a method for generating a burst error correction code. The method comprises: setting a mother code; defining a syndrome set corresponding to each burst error pattern for at least two burst error patterns to be corrected based on the mother code; shortening a column of a PCM (parity check matrix) of the mother code so that the defined syndrome sets are relatively prime; and designing an error correction code for the each burst error pattern based on an optimal generator polynomial maximizing a length of the shortened code within a range of a length of a parity bit of the mother code or a syndrome vector included in the syndrome set that is relatively prime.

Abstract: A vehicle sensor calibration method performed by a vehicle sensor calibration system including one or more infrastructure sensors includes calculating a positional relationship between the infrastructure sensor and a sensor installed in a vehicle by using the infrastructure sensor, calculating a posture of the vehicle and a reference point of the vehicle by using the infrastructure sensor, and generating a coordinate system of the vehicle based on the posture of the vehicle and the reference point of the vehicle, and performing calibration between the vehicle and a sensor installed in the vehicle and including a vehicle camera and a vehicle lidar and using the positional relationship, the posture of the vehicle, the reference point of the vehicle, and the coordinate system.

Abstract: Disclosed are a solid catalyst for producing polypropylene and a method for producing a block copolymer, particularly, disclosed are a solid catalyst for producing polypropylene, which has high activity and excellent hydrogenation activity and is capable of producing a block copolymer having high stereoregularity and a high rubber content by copolymerization of alpha-olefins, and a method for producing a block copolymer.

Abstract: Disclosed is a sensing device for an electromechanical brake, including: a power part configured to generate an operation force for braking when power is applied thereto; a housing positioned on the power part; a pressurized part positioned on the housing and pressurized by a reaction force caused by driving of the power part; and a sensing part connected to the housing and configured to sense a pressing force by the pressurized part.

Abstract: Disclosed are an apparatus and method for processing a sensor signal. The apparatus for processing a sensor signal includes a sensing unit, an amplification unit configured to amplify an analog signal sensed by the sensing unit, an analog to digital converter (ADC) configured to convert the amplified analog signal into a digital signal having a first resolution, and a signal processor configured to process the digital signal with a numeral system having a second resolution or higher, allocate the processed digital signal to a message frame according to a regulated protocol, and output the message frame.

Abstract: A waste wood sleeper pyrolysis apparatus of a hybrid heating type includes a plurality of reactor containers arranged side by side, each having a space in which a waste wood sleeper is placed, a movement rail arranged parallel to an end of one side and an end of the other side of each of the plurality of reactor containers, and a microwave applicator coupled to the movement rail and including a plurality of microwave generators that move to upper portions of the plurality of reactor containers to transmit microwaves into the plurality of reactor containers.

Abstract: A waste wood sleeper pyrolysis apparatus of a hybrid heating type includes a plurality of reactor containers arranged side by side, each having a space in which a waste wood sleeper is placed, a movement rail arranged parallel to an end of one side and an end of the other side of each of the plurality of reactor containers, and a microwave applicator coupled to the movement rail and including a plurality of microwave generators that move to upper portions of the plurality of reactor containers to transmit microwaves into the plurality of reactor containers.

Abstract: The present disclosure relates to a wheel speed sensor for a vehicle, the wheel speed sensor including: a base unit; a plurality of support units positioned on the base unit; and chip units respectively mounted on the support units and configured to detect a measurement target.

Abstract: A wheel sensor device for a vehicle may include: a first sensor part having a first fixing hole, inserted into an insertion space of a knuckle of a vehicle, and configured to sense wheel speed of the vehicle; a second sensor part overlapping the first sensor part, inserted into the insertion part with the first sensor part, having a second fixing hole aligned with the first fixing hole, and configured to sense the wheel speed; and a fixing member fixed to a mounting structure of the knuckle through the first and second fixing holes.

Abstract: The present disclosure relates to a novel transition metal compound, a transition metal catalyst composition having high catalytic activity for producing a copolymer of ethylene and ?-olefin containing the same, a method for producing a copolymer of ethylene and ?-olefin using the same, and a copolymer of ethylene and ?-olefin produced using the same.

Abstract: An electrode tab guide apparatus configured to press and collect a plurality of electrode tabs protruding from an electrode assembly when the electrode tabs are welded by a welding part includes a first tab guide and a second tab guide configured to move toward the electrode tabs from above and below the electrode tabs, respectively, and press and collect the electrode tabs, and a mover configured to move the first tab guide and the second tab guide. The mover includes a vertical mover configured to vertically move the first tab guide and the second tab guide, and a horizontal mover configured to horizontally move at least one of the first tab guide or the second tab guide.

Abstract: An apparatus and method for controlling pressure of a braking system including a pressure sensor configured to detect a pressure value within the braking system mounted in a vehicle, and collect the detected pressure value as an analog pressure signal; and a control device configured to calibrate the analog pressure signal received from the pressure sensor, convert the calibrated analog pressure signal into a digital pressure signal, and output the digital pressure signal.

Abstract: There is provided a method for generating a burst error correction code. The method comprises: setting a mother code; defining a syndrome set corresponding to each burst error pattern for at least two burst error patterns to be corrected based on the mother code; shortening a column of a PCM (parity check matrix) of the mother code so that the defined syndrome sets are relatively prime; and designing an error correction code for the each burst error pattern based on an optimal generator polynomial maximizing a length of the shortened code within a range of a length of a parity bit of the mother code or a syndrome vector included in the syndrome set that is relatively prime.

Abstract: A brake device for a vehicle according to the present disclosure includes: a caliper body configured to surround a brake disc; a pair of brake pads disposed in the caliper body so as to face each other and respectively positioned at two opposite sides of the brake disc; a screw bar installed in the caliper body and configured to be rotatable by power from a motor unit; a nut unit configured to be rectilinearly moved by a rotation of the screw bar; a piston unit configured to surround an outer portion of the nut unit and press any one of the pair of brake pads by moving together with the nut unit; a bearing unit configured to support a rotation of the screw bar and be moved by a repulsive force of the screw bar; and a load switch unit installed in the caliper body, disposed to face the bearing unit, and configured to operate by being pressed by the bearing unit.

Abstract: An electric mobility apparatus is disclosed. The electric mobility apparatus may include a steering assembly including a handlebar manipulated by a user and a support shaft having one side coupled to the handlebar, a mid-frame assembly including a user boarding part formed on an upper end, a front frame assembly having one side coupled to the support shaft and the other side on which a first connector having at least a portion fastened to one side of the mid-frame assembly is formed, and a tail frame assembly including a second connector of which at least a portion is fastened to the other side of the mid-frame assembly.

Abstract: An electric mobility apparatus is disclosed. The electric mobility apparatus may include a mid-frame assembly in which a bracket fastened to at least one component is mounted on an inner side, a front frame assembly having a portion inserted into a front face of the mid-frame assembly so as to be coupled to the mid-frame assembly, and a tail frame assembly having a portion inserted into a rear face of the mid-frame assembly so as to be coupled to the mid-frame assembly, wherein the bracket is fastened to both side faces inside the mid-frame assembly.

Abstract: The present disclosure relates to a wheel speed sensor for a vehicle, the wheel speed sensor including: a base unit; a plurality of support units positioned on the base unit; and chip units respectively mounted on the support units and configured to detect a measurement target.