Abstract: An electronic device according to an embodiment of the present disclosure may comprise a speaker, a wireless communication interface configured to communicate with an external speaker and a controller configured to acquire a first output information of the speaker and a second output information of the external speaker, and based on the first output information and the second output information, output a first audio signal to the speaker and transmit a second audio signal to the external speaker through the wireless communication interface.

Abstract: According to one aspect of the present invention, a group account service providing server capable of converting a private account into a group account in real time through a terminal of the host of a comprises: an account management unit configured to convert a first account into a group account when a group account conversion request for the first account of a host of a group is generated; a transaction ledger management unit configured to record change information in a transaction ledger for the group account when the change information including at least one of a transaction occurrence event and an information occurrence event is generated for the group account; a virtual ledger management unit configured to generate a virtual ledger to be mapped to the transaction ledger when the first account is changed to the group account.

Abstract: According to one aspect of the present invention, a group account service providing server capable of converting a private account into a group account in real time through a terminal of the host of a comprises: an account management unit configured to convert a first account into a group account when a group account conversion request for the first account of a host of a group is generated; a transaction ledger management unit configured to record change information in a transaction ledger for the group account when the change information including at least one of a transaction occurrence event and an information occurrence event is generated for the group account; a virtual ledger management unit configured to generate a virtual ledger to be mapped to the transaction ledger when the first account is changed to the group account.

Abstract: A slurry supply device includes a slurry tank for storing slurry; a temperature controller for supplying hot or cold water to the slurry tank to control the temperature of the slurry; and a double pipe for supplying the slurry to the slurry tank while being connected to the slurry tank and for allowing hot or cold water to move to control the temperature of the slurry.

Abstract: A deep-learning-based atrial fibrillation determination system using a photoplethysmography (PPG) signal detection ring is provided.

Abstract: Provided is a Mott-piezo memristor of an ABO3/CO composition, which has maximized piezo characteristics by using a method, such as doping, with various elements, an ABO3 material having a perovskite structure exhibiting Mott-transition characteristics, and inserting a CO interlayer.

Abstract: A non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte for a lithium secondary battery includes an organic solvent, a lithium salt, and a compound represented by Formula 1. In some embodiments, the compound represented by Formula 1 is present in an amount of 0.1 part by weight to 3 parts by weight based on 100 parts by weight of the non-aqueous electrolyte.

Abstract: Provided is a system for estimating oxygen saturation by using a photoplethysmography (PPG) signal sensing ring.

Abstract: A display device includes: a substrate; a transparent electrode on one surface of the substrate; a reflective electrode on the transparent electrode; a transistor on the reflective electrode; and a light emitting element between the transparent electrode and the reflective electrode. The transistor overlaps the light emitting element.

Abstract: The present disclosure relates to a 3D printer for construction for printing and forming various structures, in which agitating blades 45 capable of auto-rotation are mounted inside a nozzle 10 discharging a printing material such as concrete or mortar, to thereby enable agitation of a fluid printing material inside the nozzle 10. According to the present disclosure, agitation of the fluid printing material inside the nozzle 10 of the 3D printer for construction may be facilitated to prevent material segregation and maintain a homogeneously mixed state of materials constituting the fluid printing material.

Abstract: Disclosed herein is an apparatus for testing liquefied hydrogen valve that can configure the test valve to environmental conditions of a temperature below 20K by using only low-cost helium gas without using liquefied hydrogen or liquid helium as the test fluid. This helps companies developing liquefied hydrogen valves to safely and conveniently perform valve leakage and performance tests.

Abstract: A predictive maintenance algorithm providing method for bus maintenance priority determination according to the present invention includes operations of (a) grouping and classifying, by a data processing unit of an operational server, a plurality of buses to be monitored according to preset classification criteria, (b) receiving, by a monitoring unit of the operational server, bus monitoring information including a plurality of types of data collected by vehicle information collection devices installed on the buses for each group classified according to the operation (a), (c) performing, by the data processing unit, refinement on the bus monitoring information, (d) inputting, by the data processing unit, the bus monitoring information refined in the operation (c) as training data for an artificial intelligence machine to build an artificial intelligence model for determining bus maintenance priorities, (e) re-receiving, by the monitoring unit, the bus monitoring information collected by the vehicle informatio

Abstract: An electrolyte for a lithium secondary battery, and a lithium secondary battery including the same are disclosed herein. In some embodiments, an electrolyte for a lithium secondary battery includes a lithium salt having a molar concentration of 1.5 M to 2.0 M, an oligomer containing a unit represented by Formula 1 and having an acrylate group at an end thereof, a first additive represented by Formula 2, and an organic solvent.

Abstract: A pre-active safety seat system applied to the vehicle implements a method for improving a pre-active safety seat speed, which confirms a risk region by matching a recline angle, a slide movement position, and a cushion tilt angle, which are detected from each of a plurality of sensors of a multi-seat sensor in a risk collision situation detected by a vehicle environment sensor of an ADAS, with a seat safety map, and combines and simultaneously controls a plurality of motors of a multi-seat motor configured for a seat target posture of a seat for converting the risk region into a safety region, by a controller, shortening a pre-active safety seat (PSS) required time of a seat target posture in the pre-active safety seat (PSS) operable section before collision of the vehicle from a risk detection.

Abstract: A non-aqueous electrolyte and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte includes an organic solvent, a lithium salt, and an additive, wherein the additive includes a compound represented by Formula I and a compound represented by Formula II wherein, in Formula I, R1 is an alkylene group having 1 to 4 carbon atoms, and wherein, in Formula II, R2, R3, and R4 are each independently a fluorine atom or a fluorine-substituted alkyl group having 1 to 10 carbon atoms.

Abstract: A non-aqueous electrolyte including an additive represented by Formula 1 is described: wherein in Formula 1, R may be any one selected from the group consisting of an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, and a cycloalkenyl group having 3 to 12 carbon atoms, R1 and R2 may each independently be any one selected from the group consisting of hydrogen (H), an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, and a cycloalkenyl group having 3 to 12 carbon atoms, and A may be an alkylene group having 1 to 5 carbon atoms.

Abstract: An electronic device comprises a speaker; a wireless communication interface configured to communicate with an external device, wirelessly; and a controller configured to transmit a sound source to the speaker, transmit the sound source to the external device through the wireless communication interface, obtain a first audio corresponding to the sound source output through the speaker and a second audio corresponding to the sound source output through the external device, and control an EQ (Equalizer) mode of the external device based on a comparison result between the first audio and the second audio, or output a calibrated sound source to the speaker.

Abstract: The present disclosure relates to a 3D printer for construction for printing and forming various structures, in which agitating blades 45 capable of auto-rotation are mounted inside a nozzle 10 discharging a printing material such as concrete or mortar, to thereby enable agitation of a fluid printing material inside the nozzle 10. According to the present disclosure, agitation of the fluid printing material inside the nozzle 10 of the 3D printer for construction may be facilitated to prevent material segregation and maintain a homogeneously mixed state of materials constituting the fluid printing material.

Abstract: A display device includes a display unit including pixels. A sensor unit overlaps with the display unit and includes sensors. A sensor driver transmits a driving signal to the sensors, and receives sensing signals corresponding to the driving signal from the sensors. One sensing period includes a first sensing period and a second sensing period. The sensor driver transmits a first driving signal having a first frequency to the sensors in the first sensing period, and transmits a second driving signal having a second frequency different from the first frequency to the sensors in the second sensing period.

Abstract: A display device, includes: a substrate including a plurality of pixel areas each having an emission area; and a pixel provided in each of the pixel areas, wherein the pixel comprises: at least one light emitting element on a first surface of the substrate; a first insulating layer on the light emitting element; at least one transistor on the first insulating layer and electrically connected to the light emitting element; a second insulating layer on the transistor; a common electrode on the second insulating layer; and a pixel electrode on a third insulating layer of the common electrode and electrically connected to the transistor, wherein the light emitting element comprises a semiconductor structure on the substrate, and first and second electrodes on the semiconductor structure to be spaced apart from each other.