Abstract: A propeller tilting apparatus of air mobility may include a guide bracket configured to extend in forward and rearward directions; a sliding mechanism provided in the guide bracket to be movable in the forward and rearward directions, and including a driving motor configured to generate rotation force, and a power conversion unit connected to the guide bracket and configured to convert the rotation force of the driving motor into rectilinear motion of the sliding mechanism; and a tilting mechanism engaged to the power conversion unit to be moved together with the sliding mechanism, and including a propeller motor configured to be tilted in the upward and downward directions, and an angle conversion unit connected to the propeller motor and the power conversion unit to tilt the propeller motor using the rotation force transmitted from the power conversion unit.

Abstract: A hybrid electric vehicle (HEV) that can perform more efficient regenerative braking and a method of regenerative braking control for the same are disclosed. The method of regenerative braking control includes determining a total braking amount when a braking request is generated in a HEV including a first motor connected to an engine, a second motor directly connected to an input side of a transmission, and an engine clutch having a first end connected to the first motor and a second end connected to the second motor. The method also includes charging a battery using regenerative braking of the first motor when the engine clutch has been engaged in consideration of at least the total braking amount and charge power by regenerative braking of the second motor is less than charge limit power of the battery.

Abstract: A propeller apparatus of an air mobility may include blades configured for being folded or unfolded in a response to flight situation of the air mobility, so that energy efficiency of the air mobility is improved and flight distance is increased by efficient use of the plurality of blades in each flight situation. Furthermore, as a pitching motion of the plurality of blades is performed in addition to a folding or unfolding motion of the plurality of blades, flight performance is improved.

Abstract: A lighting device including at least one first light source configured to emit a visible light through a first light emitting surface, at least one second light source spaced apart from the first light source and configured to emit light having a wavelength for sterilization through a second light emitting surface, and a housing having a bottom portion, on which the first and second light sources are disposed. The housing can include at least one sidewall portion connected to the bottom portion to enclose the first light source and the second light source in one common area, in which the first and second light emitting surfaces face substantially the same direction, and both the first light emitting surface and the second light emitting surface can be disposed at a different elevation from the bottom portion of the housing.

Abstract: Proposed is a method of controlling a hybrid electric vehicle. In particular, the method includes: connecting a first motor directly connected with an engine with a second motor directly connected with an input end of a transmission, and determining whether to distribute an amount of error torque for the engine to the first motor or each of the first motor and the second motor on the basis of an efficiency of the first motor and an efficiency of the second motor.

Abstract: The present disclosure relates to a hybrid electric vehicle and a method of driving control for the same. The method of controlling the hybrid electric vehicle includes determining whether the hybrid electric vehicle enters an engine clutch lock-up section, determining, in a case where the hybrid electric vehicle enters the engine clutch lock-up section, whether difference in speed between a first motor and a second motor is above a predetermined threshold, and controlling of torque of the first motor according to a comparison result obtained from comparing the speed of the first motor and the speed of the second motor with each other.

Abstract: According to an aspect of the present disclosure, there may be provided a light emitting diode module, including: a light emitting diode configured to irradiate light; a conductive pattern layer electrically connected to the light emitting diode; and a cover layer disposed on the conductive pattern layer and electrically insulated, wherein the cover layer is disposed between the light emitting diode and the conductive pattern layer to have a region that at least a portion of the cover layer overlaps with the light emitting diode when viewed from above the light emitting diode.

Abstract: A hybrid electric vehicle and a method of driving control for same, which more effectively increases an amount of regenerative braking during deceleration and allows a rapid restart. A method for controlling a hybrid electric vehicle, including a step-variable transmission according to an embodiment of the present disclosure, may include an operation of prohibiting shifting when a preconfigured deceleration braking condition is satisfied. The method may further include an operation of slip-controlling an engine clutch disposed between an engine and a driving motor when an acceleration pedal is operated before a car stop holding time, in which the deceleration braking condition is maintained, exceeds a preconfigured reference time.

Abstract: Disclosed are a spatial multiplexing method and apparatus using polarization in a multi-beam system. As the spatial multiplexing method using polarization in a multi-beam system, an embodiment of the present invention provides a spatial multiplexing method including determining different phases and different polarizations to be applied to a first beam and a second beam, precoding a signal so that the first beam and the second beam have the determined different phases, and converting polarization of the precoded signal so that the first beam and the second beam have the determined different polarizations.

Abstract: A method for controlling a hybrid electric vehicle includes: connecting a first motor directly connected to an engine to a second motor directly connected to a transmission input terminal through a dual mass flywheel; determining a target angular acceleration of the first motor according to a gear shifting progress rate so that an angular acceleration of the first motor follows a target angular acceleration of the transmission input terminal when a gearshift is performed in the transmission; and controlling a torque of the first motor based on the target angular acceleration of the first motor.

Abstract: Provided a gas diffusion layer for fuel cells, the gas diffusion layer including: a carbon substrate; and a microporous layer formed on the carbon substrate, wherein the microporous layer comprises first carbon particles having a partially graphitized structure and a water-repellent binder resin binding the first carbon particles, and the microporous layer further comprises a cerium compound, a nitrogen-doped cerium compound, nitrogen-doped second carbon particles having a partially graphitized or non-graphitized structure, or a mixture of two or more, as a radical scavenger capable of removing hydrogen peroxide generated at a fuel cell open circuit potential or a higher potential.

Abstract: A method for controlling a transmission of a vehicle includes: determining whether a controller receives an acceleration pedal off signal corresponding to a lift foot up (LFU) shift request signal from an acceleration pedal sensor; determining whether an output signal value of a brake pedal sensor detecting a position value of a brake pedal is less than a brake reference value when the acceleration pedal off signal is received; determining whether a gear shifting progressing rate of the transmission performing a LFU shift in response to the LFU shift request signal is less than a progressing rate reference value when an output signal value of the brake pedal sensor is equal to or greater than the brake reference value; and controlling the transmission to hold the LFU shift when the gear shifting progressing rate of the transmission is less than the progressing rate reference value.

Abstract: The present disclosure provides a system and method for determining whether to start an engine. The system includes an engine configured to provide driving force for a vehicle through combustion of fuel, a motor configured to provide driving force for the vehicle using electrical energy, an engine clutch connecting the engine and a drive shaft, and a controller configured to control engagement of the engine clutch and starting of the engine. The controller calculates a predicted vehicle speed at the time of engagement of the engine clutch based on the current vehicle speed upon a request for passive run driving of the vehicle. The controller determines whether to start the engine by comparing the predicted vehicle speed with a reference vehicle speed.

Abstract: A lighting device including at least one first light source configured to emit a visible light through a first light emitting surface, at least one second light source spaced apart from the first light source and configured to emit light having a wavelength for sterilization through a second light emitting surface, and a hosing having a bottom portion, on which the first and second light sources are disposed, and at least one sidewall portion connected to the bottom portion to enclose the first light source and the second light source in one common area, in which the first and second light emitting surfaces face substantially the same direction, and the first light emitting surface and the second light emitting surface are disposed at a different elevation from the bottom portion of the housing.

Abstract: A portable water bottle includes a water bottle body having water stored therein; and a sterilizing module for irradiating the inside of the water bottle body with sterilizing ultraviolet rays. The sterilizing module further includes a housing having an ultraviolet outlet through which the sterilizing ultraviolet rays pass; a light source module for emitting the sterilizing ultraviolet rays; and a power storage member for supplying power to the light source module.

Abstract: A foldable propeller for air mobility includes a link assembly including a plurality of links facilitating blades to be rotated around a hub as a moving portion vertically slides such that the blades are folded to each other or unfolded from each other.

Abstract: A lighting system for air mobility may include a light emitting unit provided on a boom or a propeller of the air mobility and configured to emit light toward a ground surface so that the light is projected onto a point directed toward the ground surface from the propeller or the boom; and a control unit electrically connected to the light emitting unit and configured to control light emitting modes of the light, emitted by the light emitting unit, based on operating modes of the air mobility or operating modes of the propeller.

Abstract: A method for manufacturing monocrystalline graphene, includes supplying an aromatic carbon gas onto a single-crystalline metal catalyst to manufacture the monocrystalline graphene.

Abstract: A method for controlling a transmission of a vehicle includes: determining whether a controller receives an acceleration pedal off signal corresponding to a lift foot up (LFU) shift request signal from an acceleration pedal sensor; determining whether an output signal value of a brake pedal sensor detecting a position value of a brake pedal is less than a brake reference value when the acceleration pedal off signal is received; determining whether a gear shifting progressing rate of the transmission performing a LFU shift in response to the LFU shift request signal is less than a progressing rate reference value when an output signal value of the brake pedal sensor is equal to or greater than the brake reference value; and controlling the transmission to hold the LFU shift when the gear shifting progressing rate of the transmission is less than the progressing rate reference value.

Abstract: A sterilization module including a main body, a circuit board disposed in the main body, a light source disposed on the circuit board to emit sterilizing light, and a transparent unit to protect the light source from an outside and including a material that transmits the sterilizing light, in which the light source includes a mesa including a first semiconductor layer, an active layer, and a second semiconductor layer, a first electrode electrically connected to the first semiconductor layer, and a second electrode disposed on the second semiconductor layer and electrically connected to the second semiconductor layer, in which the first electrode includes a first contact region disposed on the outer area of the first semiconductor layer and a second contact region at least partially surrounded by the mesa, and a distance between the transparent unit and the circuit board is greater than a height of the light source.