Abstract: A rear vehicle body structure of a vehicle including an underbody and an upper body coupled to the underbody is provided. The rear vehicle body structure includes a rear floor panel provided in a rear part of the upper body and coupled to the rear part of the underbody, the rear floor panel including forming parts extending in a vertical direction from both sides of the vehicle, respectively.

Abstract: A server according to an embodiment includes a processor configured to receive a friend add request for a target account from a user terminal accessed with a user account; based on one of the user account and the target account being a protected account, transmit an approval request for the friend add request to a protector account connected to the protected account; and based on receiving a reply to the approval request from the protector terminal, add the target account to a friend list of the user account.

Abstract: An embodiment provides a customized ready-made abutment which comprises: a post positioned at the upper end thereof to be able to be coupled inside a crown; a lower part positioned at the lower end thereof such that a part or all of the lower part can be coupled to an implant; and a gingival part positioned between the post and the lower part to be in contact with gingiva without being coupled to the implant, wherein all teeth of the maxilla and the mandible are grouped into maxillary anterior teeth, mandibular anterior teeth, canine teeth, premolar teeth, and molar teeth, and multiple customized ready-made abutments are designed and manufactured such that a standard coverage of a patient-customized abutment for each group is 65% or more.

Abstract: An embodiment provides a method for designing, selecting, delivering, or implanting a customized ready-made abutment, from multiple customized ready-made abutment sets designed or manufactured on the basis of a patient database, the method comprising the steps of: preparing multiple customized ready-made abutment sets on the basis of a patient database; picking up the oral data of a patient; selecting an appropriate abutment from the multiple customized ready-made abutment sets by using software on the basis of the picked-up oral data of the patient; and delivering or implanting the selected customized ready-made abutment.

Abstract: Disclosed is a method for providing a dental abutment by using data about a customized abutment, comprising the steps of: receiving oral data about a patient; and acquiring a standardized abutment from a standardized abutment group generated from the customized abutment in correspondence with the inputted oral data about the patient.

Abstract: A hybrid vehicle may include an engine controller that determines an activation state of an oxygen sensor when the engine controller is requested to operate an engine and controls a voltage applied to the oxygen sensor depending on whether or not the oxygen sensor is in an activated state, and a vehicle controller that controls a voltage of a battery of the hybrid vehicle and applies the voltage of the battery to the engine controller. The engine controller outputs an activation demand signal for the oxygen sensor to be activated to the vehicle controller when it is determined that the oxygen sensor is not in the activated state.

Abstract: A sooty smoke filter regeneration control system of a hybrid vehicle, includes an engine, a sooty smoke filter installed in an exhaust line through which exhaust gas from the engine passes, and filtering out sooty smoke included in the exhaust gas; a temperature sensor installed in the front end of the sooty smoke filter, and measuring a temperature of exhaust gas flowing into the front end of the sooty smoke filter; an engine controller controlling a temperature of exhaust gas flowing into the sooty smoke filter and to control fuel injection of the engine, based on information associated with a grade of a road on which a vehicle is to drive; and a hybrid control unit controlling an engine clutch disposed between the engine and a motor that assists the engine in association with engine output, in response to a request from the engine controller.

Abstract: A light emitting diode includes a first conductivity type semiconductor layer, a mesa disposed on the first conductivity type semiconductor layer, and including an active layer and a second conductivity type semiconductor layer, and a lower insulation layer covering the mesa and at least a portion of the first conductivity type semiconductor layer exposed around the mesa, and having a first opening for allowing electrical connection to the first conductivity type semiconductor layer and a second opening for allowing electrical connection to the second conductivity type semiconductor layer. The active layer generates light having a peak wavelength of about 500 nm or less, and the lower insulation layer includes a distributed Bragg reflector.

Abstract: A radio frequency (RF) device may include a radio frequency integrated circuit (RFIC) chip and an antenna module on an upper surface of the RFIC chip. The antenna module may include a first patch parallel to the RFIC chip and having an upper surface configured to emit radiation in a vertical direction opposite the first patch from the RFIC chip, a ground plate parallel to the first patch, and between the first patch and the RFIC chip, and a first plurality of feed lines connected to a lower surface of the first patch and configured to supply at least one first differential signal to the first patch from the RFIC chip.

Abstract: An engine control method of a hybrid electric vehicle is provided. The method includes detecting a state of charge (SOC) of a main battery of the hybrid electric vehicle and detecting whether a brake requires operation when the main battery is in a fully-charged state or a charging-limiting state. An engine fuel cut of the hybrid electric vehicle is executed when a request for the engine brake is generated and an engine is operated to maximize an engine load of the hybrid electric vehicle.

Abstract: A method of testing a radio frequency (RF) integrated circuit includes: forming, performed by the RF integrated circuit, a test loop that passes through a first transceiver circuit, a first front-end circuit, and a second transceiver circuit, based on a test control signal transmitted from a test device; adjusting, performed by the RF integrated circuit, a shift degree of at least one phase shifter in the first front-end circuit, based on the test control circuit; and receiving, performed by the RF integrated circuit, a test input signal via the first transceiver circuit from the test device, and outputting, to the test device, the test input signal that has passed through the test loop, wherein the test input signal is output as a test output signal via the second transceiver circuit.

Abstract: A light emitting diode including a light emitting structure including an active layer, a first distributed Bragg reflector (DBR) disposed on one side of the light emitting structure to reflect light emitted from the light emitting structure, and an interfacial layer disposed between the light emitting structure and the first DBR, in which the first DBR includes first material layers having a low refractive index and second material layers having a high refractive index alternately stacked one above another, the interfacial layer has a lower refractive index than the first material layers, and has a thickness greater than a thickness of each of the first and second material layers, and one a second material layer of the second material layers that is closest to the interfacial layer includes a first sub-layer and a second sub-layer, the first sub-layer having a density lower than that of the second sub-layer.

Abstract: A light emitting diode including a light emitting structure including an active layer, a first distributed Bragg reflector (DBR) disposed on one side of the light emitting structure to reflect light emitted from the light emitting structure, and an interfacial layer disposed between the light emitting structure and the first DBR, in which the first DBR includes first material layers having a low refractive index and second material layers having a high refractive index alternately stacked one above another, the interfacial layer has a lower refractive index than the first material layers, and has a thickness greater than a thickness of each of the first and second material layers, and one a second material layer of the second material layers that is closest to the interfacial layer includes a first sub-layer and a second sub-layer, the first sub-layer having a density lower than that of the second sub-layer.

Abstract: A sooty smoke filter regeneration control system of a hybrid vehicle, includes an engine, a sooty smoke filter installed in an exhaust line through which exhaust gas from the engine passes, and filtering out sooty smoke included in the exhaust gas; a temperature sensor installed in the front end of the sooty smoke filter, and measuring a temperature of exhaust gas flowing into the front end of the sooty smoke filter; an engine controller controlling a temperature of exhaust gas flowing into the sooty smoke filter and to control fuel injection of the engine, based on information associated with a grade of a road on which a vehicle is to drive; and a hybrid control unit controlling an engine clutch disposed between the engine and a motor that assists the engine in association with engine output, in response to a request from the engine controller.

Abstract: A hybrid vehicle may include an engine controller that determines an activation state of an oxygen sensor when the engine controller is requested to operate an engine and controls a voltage applied to the oxygen sensor depending on whether or not the oxygen sensor is in an activated state, and a vehicle controller that controls a voltage of a battery of the hybrid vehicle and applies the voltage of the battery to the engine controller. The engine controller outputs an activation demand signal for the oxygen sensor to be activated to the vehicle controller when it is determined that the oxygen sensor is not in the activated state.

Abstract: A method of testing a radio frequency (RF) integrated circuit includes: forming, performed by the RF integrated circuit, a test loop that passes through a first transceiver circuit, a first front-end circuit, and a second transceiver circuit, based on a test control signal transmitted from a test device; adjusting, performed by the RF integrated circuit, a shift degree of at least one phase shifter in the first front-end circuit, based on the test control circuit; and receiving, performed by the RF integrated circuit, a test input signal via the first transceiver circuit from the test device, and outputting, to the test device, the test input signal that has passed through the test loop, wherein the test input signal is output as a test output signal via the second transceiver circuit.

Abstract: A wireless terminal is provided that includes a first receiver that includes a first input unit configured to perform impedance matching on a first reception signal to output a first RF input signal. A first amplification unit is configured to amplify the first RF input signal to output one or more first RF output signals in an inter-band CA mode and an intra-band CA mode. A first output unit is configured to down-convert at least one of the one or more first RF output signals to a baseband. A second receiver includes a second output unit. In the intra-band CA mode, the one or more first RF output signals includes a first RF signal and a second RF signal, and the first amplification unit is further configured to provide the first output unit with the first RF signal and provide the second output unit with the second RF signal.

Abstract: Provided are a method of processing images and an electronic device thereof. The electronic device includes a memory and a processor operatively connected to the memory. The processor is configured to divide an image into a plurality of sub images, load information about a first sub image of the plurality of sub images into the memory, perform image processing on the first sub image, load information about an image area that does not overlap with the first sub image of a second sub image located in a longitudinal direction of the first sub image into the memory, and perform image processing on the second sub image.

Abstract: A radio frequency (RF) device may include a radio frequency integrated circuit (RFIC) chip and an antenna module on an upper surface of the RFIC chip. The antenna module may include a first patch parallel to the RFIC chip and having an upper surface configured to emit radiation in a vertical direction opposite the first patch from the RFIC chip, a ground plate parallel to the first patch, and between the first patch and the RFIC chip, and a first plurality of feed lines connected to a lower surface of the first patch and configured to supply at least one first differential signal to the first patch from the RFIC chip.

Abstract: An engine control method of a hybrid electric vehicle is provided. The method includes detecting a state of charge (SOC) of a main battery of the hybrid electric vehicle and detecting whether a brake requires operation when the main battery is in a fully-charged state or a charging-limiting state. An engine fuel cut of the hybrid electric vehicle is executed when a request for the engine brake is generated and an engine is operated to maximize an engine load of the hybrid electric vehicle.