Abstract: Provided is an ultrasonic wave amplifier including a cavity structure for amplifying and outputting sound waves. The cavity structure may include an input opening through which the sound waves generated by the transducer are input, an inner wall forming a cavity in which the sound waves input through the input opening resonate, and an output opening through which the amplified sound waves are output, and when a first axis is defined as a line connecting a center of the input opening and a center of the output opening, the shape of the inner wall may be formed such that an area of the cavity in a cross section perpendicular to the first axis varies depending on a position on the first axis. Ultrasonic wave amplifier may further comprise an insertion structure disposed inside the cavity.

Abstract: An electronic device including a processor that generates first identification data including a unique value corresponding to an external device, transmits an authentication request including information on a blockchain application and the first identification data to the external device, receives, a random value generated from the external device if authentication is successful, transmits a signature request including the random value and information on a transaction to the external device, generates a first hash value for the transaction, receives a second hash value for the transaction, which is generated based on verification of the random value, and signature data obtained by performing digital signature to the transaction with a private key stored in the external device, and determines whether to transmit the transaction to the blockchain network, based on the first hash value and the second hash value.

Abstract: A VCM (voice coil motor) is disclosed, the VCM including: a rotor including a lens-accommodating, both ends opened cylindrical bobbin and a coil block including a coil wound on a periphery of the bobbin; a stator including a cylindrical yoke formed with a lens-exposing opening, a plurality of magnets disposed inside the yoke and opposite to the coil block, and a housing disposed inside the yoke to fix the plurality of magnets; and an elastic member elastically supporting the bobbin.

Abstract: A device configured to detect a drop of oil pressure includes: a first gate configured to receive an acceleration measured by an acceleration sensor and to output a logical value indicating whether the acceleration falls within a range that is determined by a turning cam tracking diagnosis entry acceleration and a turning cam tracking diagnosis escape acceleration; a second gate configured to invert an output of the first gate; and a third gate configured select and output one of an output value of the second gate or a first value based on a first selection signal. The device is configured to perform a turning cam tracking diagnosis entry when the output value of the third gate is the first value, and the device is configured to not perform the turning cam tracking diagnosis entry when the output value of the third gate is a second value.

Abstract: An electronic apparatus comprises: a display; a memory that stores a trained first artificial intelligence model; and at least one processor that acquires viewing group information of a user by inputting context information including profile information of the user and use history information of the electronic apparatus into the first artificial intelligence model, controls the display to display advertisement content identified on a basis of the obtained viewing group information, acquires feedback information of the user related to the displayed advertisement content, and updates the first artificial intelligence model to a second artificial intelligence model retrained on the basis of the input context information and the obtained feedback information.

Abstract: A home appliance, e.g. a refrigerator, includes a cabinet forming a space and a door for opening and closing the space, the door including a door body with an insulator filled therein, and a panel assembly mounted in front of the door body, wherein the panel assembly includes a lighting device configured to emit light, a panel forming a front surface of the door and configured to transmit light therethrough, a light guide plate disposed behind the panel and configured to guide light emitted from the lighting device to the panel, and a member disposed between the panel and the light guide plate, including the panel and the light guide plate mounted thereon, and configured to transmit light of the light guide plate through an entire part of the panel.

Abstract: Disclosed are a method, a device, and a program for selecting a main speaker among speakers included in a sound source or a conversation record based on the sound source or the conversation record including conversation contents of at least one speaker and generating a summary based on the main speaker. A method of generating a summary for a sound source, the method being performed by at least one computing device, includes: generating a speak score for at least one speaker based on the sound source; determining a main speaker of the sound source based on a speak score for said at least one speaker; and generating a summary for the sound source in consideration of the determined main speaker.

Abstract: A refrigerator includes a cabinet and a door. The door includes: a door liner forming a rear of the door and having a liner opening; a panel assembly including a plurality of transparent panels; and an insulating material filled inside the door excluding the panel assembly, the panel assembly includes a first panel forming a front surface of the door; a second panel provided at a rear side spaced apart from the first panel and forming a first insulating layer between the second panel and the first panel; and a third panel provided at the rear side spaced apart from the second panel to cover the liner opening and forming a second insulating layer between the third panel and the second panel, and the first insulating layer is formed to be larger than the second insulating layer and protrudes further than an end portion of the second insulating layer.

Abstract: A refrigerator according to an embodiment of the present disclosure includes a cabinet forming a storage space; and a door configured to open and close the storage space, in which the door includes a door liner forming a rear of the door and having a liner opening; a gasket mounted at a mounting groove recessed in the door liner; a panel assembly forming a front surface of the door, disposed to cover the liner opening, and configured to see through a space behind the door; and an insulating material filled inside the door excluding the panel assembly, the panel assembly includes a plurality of insulating layers formed by a plurality of transparent panels spaced apart in the front and rear direction, and one of the plurality of insulating layers extends further toward an outer end of the door with respect to the mounting groove.

Abstract: A lithium secondary battery including a positive electrode, a negative electrode comprising a negative electrode current collector, and an electrolyte interposed between the positive electrode and negative electrode. The lithium metal is formed on the negative electrode current collector by lithium ions migrating toward the negative electrode current collector after charge. The electrolyte comprises a sacrificial salt having an oxidation potential of 5 V or less with respect to lithium. The lithium secondary battery forms lithium metal while being blocked from the atmosphere, and thereby improves an existing problem caused by high reactivity of lithium metal. By including a sacrificial salt in an electrolyte, lithium consumption caused by an irreversible reaction of a negative electrode is reduced, which may prevent decline in the battery capacity and lifetime properties.

Abstract: A semiconductor device and a semiconductor package, the device including a first buffer dielectric layer on a first dielectric layer; a second dielectric layer and a second buffer dielectric layer sequentially disposed on the first buffer dielectric layer, the second buffer dielectric layer being in contact with the first buffer dielectric layer; and a pad interconnection structure that penetrates the first buffer dielectric layer and the second buffer dielectric layer, wherein the pad interconnection structure includes copper and tin.

Abstract: Disclosed is a method for identifying a word corresponding to a target word in text information, which is performed by one or more processors of a computing device. The method may include: determining a target word; determining a threshold for an edit distance associated with the target word; determining a word of which the edit distance from the target word among words included in text information is equal to or less than the threshold; and identifying the word corresponding to the target word based on the determined word.

Abstract: According to an aspect, a method of preparing quantum dots includes a first operation of preparing a quantum dot seed solution; a second operation of growing a quantum dot by continuously injecting a quantum dot cluster solution into the quantum dot seed solution; a third operation of separating the grown quantum dot and dispersing the quantum dot in a solvent; and a fourth operation of further growing the quantum dot by continuously injecting the quantum dot cluster solution into the dispersed quantum dot.

Abstract: According to an aspect, a method of preparing quantum dots includes a first operation of preparing a quantum dot seed solution; a second operation of growing a quantum dot by continuously injecting a quantum dot cluster solution into the quantum dot seed solution; a third operation of separating the grown quantum dot and dispersing the quantum dot in a solvent; and a fourth operation of further growing the quantum dot by continuously injecting the quantum dot cluster solution into the dispersed quantum dot.

Abstract: A multilayered capacitor includes a capacitor body including a dielectric layer and an inner electrode, and an external electrode disposed outside the capacitor body, in which the inner electrode includes a compound represented by the following Chemical Formula 1, and the compound has a Brunauer-Emmett-Teller (BET) specific surface area of 1.0 to 2.2 m2/g: M1a+1M2M3a??[Chemical Formula 1] (in Chemical Formula 1, M1 is Ti, V, Sc, Zr or Mo, M2 is Al, Si, Sn, Cd, In, Ga, Ge, Pb, As, S or P, M3 is C or N, a is 1 to 3).

Abstract: A synapse device may include an oxide semiconductor transistor divided into a write transistor and a read transistor. The write transistor is an oxide semiconductor transistor having a dual gate including a bottom gate located below a thin oxide semiconductor layer and a top gate located above the thin oxide semiconductor layer.

Abstract: Disclosed is a processor implemented method that includes calculating a quantization error for each channel of a neural network using activation data output from a first layer of the neural network and a quantization scale of a second layer connected to the first layer, calculating a final loss using a regularization loss term determined based on the quantization error for each channel, and updating a batch norm parameter of the first layer in a direction to decrease the final loss.

Abstract: Provided is a hydrogenation method of a phthalate-based compound. According to the present invention, after hydrogenation of the phthalate-based compound, a reaction product is stably decompressed to separate and recover unreacted hydrogen, thereby improving stability and economic efficiency of the process.

Abstract: Disclosed is a method of generating data based on input data by using a pre-trained artificial neural network model having an encoder-decoder structure. In particular, according to the present disclosure, a computing device generates new data based on a probability distribution of input data by using a pre-trained artificial neural network model having an encoder-decoder structure, and the pre-trained artificial neural network model having the encoder-decoder structure corresponds to a pre-trained model in which a latent vector layer is included between an encoder layer and a decoder layer of the artificial neural network model.

Abstract: Disclosed is a method for identifying a word corresponding to a target word in text information, which is performed by one or more processors of a computing device. The method may include: determining a target word; determining a threshold for an edit distance associated with the target word; determining a word of which the edit distance from the target word among words included in text information is equal to or less than the threshold; and identifying the word corresponding to the target word based on the determined word.