Abstract: A power system may include a first motor, a second motor connected in parallel to the first motor, a driver configured to supply a driving current to the first motor and the second motor and a controller configured to control the driver based on the driving current and a rotating speed of the first motor, and when the rotating speed of the first motor is different from a rotating speed of the second motor, the controller may control the driver so that the rotating speed of the first motor is equal to the rotating speed of the second motor. The power system may drive two and more motors at the same speed by applying the driving voltage based on the rotating speed and the driving current of one of two or more motors, using a single driving apparatus.

Abstract: A stacked transparent film includes a polymer film including at least one of an amide structural unit and an imide structural unit, wherein the polymer film has a refractive index of about 1.65 to about 1.75 at a 550 nanometer wavelength and an elastic modulus of greater than or equal to about 5.5 gigapascals; and at least one of a first coating layer on a first side of the polymer film and a second coating layer on a side opposite the first side of the polymer film.

Abstract: A flexible plastic substrate includes a film including a poly(amide-imide) copolymer; and a hard coating layer disposed on a first surface of the film, wherein the hard coating layer includes a crosslinked siloxane copolymer, and wherein the flexible plastic substrate has pencil hardness of greater than or equal to 2H under a vertical load of 1 kilogram according to ASTM D3363, a total light transmittance of greater than or equal to about 89% in a wavelength region of 350 nanometers to 750 nanometers.

Abstract: A window for a display device including a plastic substrate having yield strain of greater than or equal to about 0.8% at about 85 degrees Celsius and 85% relative humidity and a hard coating layer disposed on at least one side of the plastic substrate.

Abstract: The present disclosure relates to a manufacturing method of a transparent electrode, and more particularly, to a manufacturing method of a transparent electrode by using a roll-to-roll type transparent electrode manufacturing apparatus including at least one atomic layer deposition module, the method comprises: performing a first atomic layer deposition process to respectively form first and second protection layers on a first surface of a flexible substrate and on a second surface opposite to the first surface; performing a second atomic layer deposition process to form a first oxide layer on the first protection layer; forming a metal layer on the first oxide layer; and forming a second oxide layer on the metal flim, wherein each of the performing the first atomic layer deposition process and the second atomic layer deposition process includes using the at least one atomic layer deposition module.

Abstract: A motor driving device is disclosed. The motor driving device includes: a rectifier rectifying alternating current (AC) power into direct current (DC) power to output an input voltage; a first buck-boost converter including a plurality of switches for converting the input voltage and having a buck mode of stepping down the input voltage and a boost mode of stepping up the input voltage; an inverter converting a DC-link voltage transformed from the first buck-boost converter into an AC voltage and transferring the AC voltage to a motor; and a controller receiving motor information related to driving of the motor, comparing magnitudes of a desired DC-link voltage depending on the received motor information and the input voltage with each other, and performing a control to switch only any one of the plurality of switches so that the first buck-boost converter is operated in the buck mode or the boost mode.

Abstract: An electro spinning apparatus according to embodiments of the inventive concept includes a nozzle unit discharging nano fiber on a substrate, and an alignment device having the substrate disposed thereon and aligning the nano fiber, wherein the alignment device includes a body and an angle adjustment unit adjusting an angle formed by a straight line connecting two electrodes disposed to face each other among the electrodes and the substrate.

Abstract: Disclosed are an electronic device and a method of fabricating the same. The method of fabricating an electronic device comprises providing on a substrate a channel layer including a two-dimensional material, providing a metal fiber layer on a first surface of a conductive layer, providing the metal fiber layer on the channel layer, and performing a thermal treatment process to form a junction layer where a portion of the metal fiber layer is covalently bonded to a portion of the channel layer.

Abstract: It is an aspect of the present disclosure to provide a motor driving apparatus, and a method of controlling the same. In accordance with one aspect of the present disclosure, the motor driving apparatus includes an inverter configured to supply driving power to a motor; a sensing unit configured to sense a DC voltage supplied to the inverter and a driving current supplied from the inverter to the motor; and a controller configured to compensate for an iron loss and a copper loss by calculating a loss of the motor based on the sensed DC voltage and driving current and controlling the inverter to adjust the driving current based on the calculated loss of the motor.

Abstract: Provided is a method for manufacturing a conductive film. The method for manufacturing a conductive film includes providing a polymer thin-film on a base film, treating the polymer thin-film by using 10 M to 15 M of nitric acid, and washing the polymer thin-film treated with nitric acid. The nitric acid treatment is performed at room temperature for about 7 minutes to about 13 minutes.

Abstract: Provided are an apparatus and method for performing routing for multi-hop communication. A mobile ad-hoc routing apparatus includes a control information manager configured to generate control information for managing a topology in a mobile ad-hoc network, a control information transceiver configured to transmit the control information or information for generating the control information to other nodes and receives control information of the other nodes or information for generating the control information from the other nodes, a data path manager configured to set a path for transmitting and receiving data using the generated control information and the received control information or the information for generating the control information, and a data transceiver configured to transmit and receive the data through the set path. The path for transmitting and receiving the data and a path for transmitting and receiving the control information use channels that are physically different from each other.

Abstract: A poly(amide-imide) copolymer film having a compressive modulus of greater than or equal to about 1.8 gigaPascals and a yellowness index of less than or equal to about 3, when measured according to an ASTM E313 standard.

Abstract: Provided are a transparent solar cell and a rear-reflective transparent solar cell module having the same. The transparent solar cell includes a transparent substrate, a first transparent electrode on the transparent substrate, a light absorption layer on the first transparent electrode, a re-absorption enhancing layer on the light absorption layer, and a second transparent electrode on the re-absorption enhancing layer.

Abstract: A power system may include a first motor, a second motor connected in parallel to the first motor, a driver configured to supply a driving current to the first motor and the second motor and a controller configured to control the driver based on the driving current and a rotating speed of the first motor, and when the rotating speed of the first motor is different from a rotating speed of the second motor, the controller may control the driver so that the rotating speed of the first motor is equal to the rotating speed of the second motor. The power system may drive two and more motors at the same speed by applying the driving voltage based on the rotating speed and the driving current of one of two or more motors, using a single driving apparatus.

Abstract: Disclosed herein are a cooling apparatus and a control method thereof. The cooling apparatus using latent heat of a refrigerant includes evaporators evaporating the refrigerant, a compressor compressing the evaporated refrigerant to a high pressure, defrosting heaters removing frost accumulated on the evaporators, a driving unit providing driving current selectively to the compressor or the defrosting heaters, and a control unit controlling the driving unit to provide driving current to the compressor in a cooling operation mode and controlling the driving unit to provide driving current to the defrosting heaters in a defrosting operation mode. The cooling apparatus controls the defrosting heaters using a driving circuit controlling the compressor, and thus lowers the manufacturing costs of a refrigerator operated at DC power.

Abstract: A mobile ad-hoc routing apparatus includes a first communication module and a second communication module configured to transmit and receive data through a first communication band and a second communication band, respectively, a memory configured to store a program for transmitting and receiving the data, and a processor configured to execute the program stored in the memory, wherein when the program is executed, the processor receives first control information broadcast by one or more neighboring nodes via the first communication module and stores the first control information in the memory, wherein the first control information includes current position and communication status information of the neighboring node, the processor updates information on the neighboring node on the basis of the first control information, generates packet forwarding information which includes information on a node which currently allows packet data to be transmitted based on the updated information on the neighboring node, and

Abstract: An adapter having a rotatable plug is provided. The adapter includes a case having an installation hole which provides access to an interior of the case; a rotation member installed within the installation hole of the case, the rotation member being rotatable within the installation hole relative to the case; at least one connection pin installed in the rotation member and protruding from the case; and a guide member provided adjacent to installation hole in the interior of the case and configured to guide rotation of the rotation member.

Abstract: The present invention relates to a nanophosphor which may be used as a wavelength conversion part of a solar cell, a fluorescent contrast agent, and a light emitting part of a display device, and a synthesis method thereof. The nanophosphor of the present invention is excited by ultraviolet light to exhibit strong green light emission, and has multicolor light emission characteristics capable of controlling a color such as green, yellowish green, yellow, and orange color by only adjusting the amount of a doping agent.