Abstract: Provided is a method for preparing an asymmetric linear carbonate, the method comprising: subjecting two kinds of different symmetric linear carbonates to a transesterification reaction in the presence of a metal alkoxide catalyst to prepare an asymmetric linear carbonate, wherein the metal of the metal alkoxide is at least one selected from the group consisting of aluminum (Al), magnesium (Mg), germanium (Ge), gallium (Ga), cobalt (Co), calcium (Ca), hafnium (Hf), iron (Fe), nickel (Ni), niobium (Nb), molybdenum (Mo), lanthanum (La), rhenium (Re), scandium (Sc), silicon (Si), tantalum (Ta), tungsten (W), yttrium (Y), zirconium (Zr) and vanadium (V). Also provided is an asymmetric linear carbonate including the metal alkoxide catalyst.

Abstract: A braking system includes a hydraulic brake including a first hydraulic brake provided on one of a front wheel and a rear wheel of a vehicle and a second hydraulic brake provided on the other of the front wheel and the rear wheel of the vehicle, a main braking force adjusting device configured to control braking hydraulic pressure supplied to the first hydraulic brake and the second hydraulic brake, and an auxiliary braking force adjusting device configured to directly control braking hydraulic pressure of the first hydraulic brake when a failure occurs in the main braking force adjusting device, wherein the first hydraulic brake is connected to the main braking force adjusting device via the auxiliary braking force adjusting device.

Abstract: The present disclosure discloses beamforming methods and apparatuses. According to an exemplary embodiment of the present disclosure, an antenna message generation deep neural network (DNN) and a beam characteristic generation DNN of a bipartite graph neural network (BGNN) having terminals as vertices on one side and APs as vertices on another side may be constructed.

Abstract: Disclosed is a beamforming method using a deep neural network. The deep neural network may include an input layer, L hidden layers, and an output layer, and the beamforming method may include: obtaining channel information h between a base station and K terminals and a transmit power limit value P of the base station, and inputting h and P into the input layer; and performing beamforming on signals to be transmitted to the K terminals using beamforming vectors derived using the output layer and at least one activation function, wherein the base station transmits the signals to the K terminals using M transmit antennas. Here, the output layer may be configured in a direct beamforming learning (DBL) scheme, a feature learning (FL) scheme, or a simplified feature learning (SFL) scheme.

Abstract: Disclosed is a beamforming method using a deep neural network. The deep neural network may include an input layer, L hidden layers, and an output layer, and the beamforming method may include: obtaining channel information h between a base station and K terminals and a transmit power limit value P of the base station, and inputting h and P into the input layer; and performing beamforming on signals to be transmitted to the K terminals using beamforming vectors derived using the output layer and at least one activation function, wherein the base station transmits the signals to the K terminals using M transmit antennas. Here, the output layer may be configured in a direct beamforming learning (DBL) scheme, a feature learning (FL) scheme, or a simplified feature learning (SFL) scheme.

Abstract: A superconducting arcing induction type DC circuit breaker includes a superconducting fault current limiter and an arcing induction type DC circuit breaker connected in series to each other. The arcing induction type DC circuit breaker includes an induction member that has a through-hole, is continuously formed in a 360-degree direction, and has a certain shape and thickness, and an induction needle that protrudes from an inner surface of the induction member toward a center of the induction member. A contact point where an anode and a cathode, which are mechanical contacts, approach from opposite directions and come into contact with each other is formed in the through-hole of the induction member, and the anode and the cathode are separated in a direction far away from each other.

Abstract: A superconducting arcing induction type DC circuit breaker includes a superconducting fault current limiter and an arcing induction type DC circuit breaker connected in series to each other. The arcing induction type DC circuit breaker includes an induction member that has a through-hole, is continuously formed in a 360-degree direction, and has a certain shape and thickness, and an induction needle that protrudes from an inner surface of the induction member toward a center of the induction member. A contact point where an anode and a cathode, which are mechanical contacts, approach from opposite directions and come into contact with each other is formed in the through-hole of the induction member, and the anode and the cathode are separated in a direction far away from each other.

Abstract: An illumination device for a refrigerator and a method of controlling the same are provided. The illumination device includes a lamp assembly that irradiates light to an inside of a storage chamber of the refrigerator, a base plate mounted on a side within the storage chamber, wherein the lamp assembly is provided on a side of the base plate, a watertight cover formed to enclose the lamp assembly blocking direct penetration of water into the lamp assembly, and at least one fastening device formed on a side of the base plate. The at least one fastening device surrounds an outer surface and an inner surface of entire lower edge of the watertight cover along a side of the watertight cover forming a recess-prominence engagement with the watertight cover. Lamps provided in the lamp assembly are individually controlled through a manipulation panel mounted on the main body.

Abstract: Disclosed are an illumination device for a refrigerator and a method of controlling the same. The illumination device includes: a lamp assembly for irradiating light to the inside of a storage chamber of a refrigerator; a base plate mounted on a side within the storage chamber, the lamp assembly being provided on a side of the base plate; a watertight cover formed to enclose the lamp assembly so as to block the direct penetration of water into the lamp assembly; and a fastening means formed on a side of the base plate to surround the watertight cover so as to form a recess-prominence engagement with the watertight cover. Lamps provided in the lamp assembly are individually controlled through a manipulation panel mounted on the main body. If the refrigerator door is opened, the driving of the lamp assembly is stopped. In addition, the lamp assembly irradiates different colored lights depending on the kind of food.

Abstract: Disclosed are an illumination device for a refrigerator and a method of controlling the same. The illumination device includes: a lamp assembly for irradiating light to the inside of a storage chamber of a refrigerator; a base plate mounted on a side within the storage chamber, the lamp assembly being provided on a side of the base plate; a watertight cover formed to enclose the lamp assembly so as to block the direct penetration of water into the lamp assembly; and a fastening means formed on a side of the base plate to surround the watertight cover so as to form a recess-prominence engagement with the watertight cover. Lamps provided in the lamp assembly are individually controlled through a manipulation panel mounted on the main body. If the refrigerator door is opened, the driving of the lamp assembly is stopped. In addition, the lamp assembly irradiates different colored lights depending on the kind of food.

Abstract: A steam generator, a heating cooker having the same and a control method of the heating cooker prevent the lowering of steam generation performance and generate steam within a short period of time while stably supplying water required for generating steam, a heating cooker having the steam generator and a control method of the heating cooker. The control method of a steam generator having a steam container, a steam heater and a water level sensor includes determining whether the steam container is subject to lack of water using the water level sensor, supplying water for a predetermined first time when it is determined that water in the steam container is less than a predetermined minimum level, and controlling a supply amount of water by additionally supplying water for a predetermined second time when a minimum water level is sensed in the steam container by the water level sensor after supplying water.

Abstract: Disclosed are an illumination device for a refrigerator and a method of controlling the same. The illumination device includes: a lamp assembly for irradiating light to the inside of a storage chamber of a refrigerator; a base plate mounted on a side within the storage chamber, the lamp assembly being provided on a side of the base plate; a watertight cover formed to enclose the lamp assembly so as to block the direct penetration of water into the lamp assembly; and a fastening means formed on a side of the base plate to surround the watertight cover so as to form a recess-prominence engagement with the watertight cover. Lamps provided in the lamp assembly are individually controlled through a manipulation panel mounted on the main body. If the refrigerator door is opened, the driving of the lamp assembly is stopped. In addition, the lamp assembly irradiates different colored lights depending on the kind of food.

Abstract: Provided is an inner case of a refrigerator and a method for manufacturing the same that allow a welded portion to have a plane-contact to improve welding performance. Also, provided are an inner case of a refrigerator and a method for manufacturing the same that allow the inner case to be neatly cleaned.

Abstract: An electric oven includes a main body formed with a cooking chamber and a door opening/closing the cooking chamber. The electric oven further includes a heater unit provided in the main body and for heating the cooking chamber; a partition plate detachably provided in the cooking chamber and partitioning the cooking chamber into a first cooking chamber and a second cooking chamber; a mode selecting unit provided to select one of cooking modes for a single type cooking chamber without the partition plate, and for a double type cooking chamber with the partition plate; and a controller which detects whether the partition plate is mounted in the cooking chamber, and adjusts the mode selecting unit corresponding either to the single type cooking chamber or to the double type cooking chamber.

Abstract: A microwave oven and a method of controlling the same. The microwave oven is capable of using a plurality of input powers with different frequencies. The microwave oven includes input power sources, an interrupt generation unit and a control unit. The interrupt generation unit generates interrupt signals with different periods according to the frequencies of the input powers. The control unit cumulatively counts pulses generated on the basis of the interrupt signals outputted from the interrupt generation unit, compares the cumulatively counted value with a reference value, and discriminates the frequencies of the input powers depending on the number of instances where the cumulatively counted value is equal to or greater than the reference value.

Abstract: A microwave oven accumulatively counts a cooking time by decreasing the cooking time where an actual cooking operation is not carried out, and various electrical parts, including a high voltage transformer, are cooled. The microwave oven increases the cooking time where a power relay of the microwave oven is actually driven and the cooking operation is carried out. Accordingly, the microwave oven counts the cooking time in consideration of cooking conditions. Additionally, the microwave oven decreases an output power level where the counted cooking time has reached a preset overheating prevention time, and compulsorily recovers the output power level to perform the remaining cooking operation where a cooling period has elapsed.

Abstract: A microwave oven and a method of controlling the same. The microwave oven is capable of using a plurality of input powers with different frequencies. The microwave oven includes input power sources, an interrupt generation unit and a control unit. The interrupt generation unit generates interrupt signals with different periods according to the frequencies of the input powers. The control unit cumulatively counts pulses generated on the basis of the interrupt signals outputted from the interrupt generation unit, compares the cumulatively counted value with a reference value, and discriminates the frequencies of the input powers depending on the number of instances where the cumulatively counted value is equal to or greater than the reference value.

Abstract: The present invention relates to a transparent conductive thin film and a method for the preparation of the same., and more particularly to a method for the preparation of a transparent conductive thin film comprising the steps of a) preparing a sol solution of antimony-tin oxides (ATO) or indium-tin oxides (ITO), b) forming a transparent coating layer on an outer surface of a cathode ray tube using the sol solution, and c) rapidly increasing a temperature of the transparent coating layer to a predetermined temperature of 300 to 1200° C., and rapidly cooling the transparent coating layer either immediately or after maintaining the predetermined temperature for up to 20 seconds, and a transparent conductive thin film prepared by this preparation method, i.e., a transparent conductive thin film which not only has superior conductivity, high hardness, and non-reflectivity but also saves production process time and increases production process effectiveness, and a method for the preparation of the same.

Abstract: The present invention relates to a transparent conductive thin film and a method for the preparation of the same, and more particularly to a method for the preparation of a transparent conductive thin film comprising the steps of a) preparing a sol solution of antimony-tin oxides (ATO) or indium-tin oxides (ITO), b) forming a transparent coating layer on an outer surface of a cathode ray tube using the sol solution, and c) rapidly increasing a temperature of the transparent coating layer to a predetermined temperature of 300 to 1200° C., and rapidly cooling the transparent coating layer either immediately or after maintaining the predetermined temperature for up to 20 seconds, and a transparent conductive thin film prepared by this preparation method, i.e., a transparent conductive thin film which not only has superior conductivity, high hardness, and non-reflectivity but also saves production process time and increases production process effectiveness, and a method for the preparation of the same.