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 method, apparatus, and system for generating and transmitting a physical broadcast channel (PBCH) are provided. A base station may perform a first scrambling process on PBCHs in a time period before a channel coding, and perform a second scrambling process after the channel coding. PHCH payloads and PBCH DMRS may provide information bits to be used in the scrambling processes.

Abstract: A secondary battery comprising a positive electrode current collector, a first positive electrode mixture layer disposed on the positive electrode current collector and including a first positive electrode active material and a binder, and a second positive electrode mixture layer disposed on the first positive electrode mixture layer and including a second positive electrode active material and a binder. A nickel content of the second positive electrode active material is 80% by weight or less of a nickel content of the first positive electrode active material. By providing a secondary battery including a positive electrode of a multi-layer structure that includes positive electrode active materials having different contents of nickel, a secondary battery capable of improving high-temperature characteristics while maintaining energy density may be provided.

Abstract: In a temperature sensor, a wearable device comprising the temperature sensor, and a core temperature measurement method using the temperature sensor, the temperature sensor includes a sensing unit and a substrate. The sensing unit includes a base part, a measuring part mounted on the base part and configured to measure a temperature of a subject body by making contact with the subject body, and a cover part configured to cover the measuring part. The sensing unit is mounted on the substrate. A plurality of slits is formed around a first area of the substrate, and the sensing unit is mounted at the first area of the substrate.

Abstract: Proposed are a timber-concrete composite slab with a notched plywood shear connector and a manufacturing method thereof. The timber-concrete composite slab may include a plurality of shear connectors disposed with gaps in a width direction, and a plurality of tension members made of wood and each coupled to lower portions of any one and another adjacent one of the shear connectors between the adjacent shear connectors. The timber-concrete composite slab may also include a plurality of heat insulators each bonded or inserted between upper portions of any one and another adjacent one of the shear connectors, and concrete poured in a predetermined height over the shear connectors.

Abstract: Disclosed herein are a method for transmitting a broadcast signal for signaling information about a combination of Layered-Division Multiplexing (LDM) technology and Multiple-Input Multiple-Output (MIMO) technology and an apparatus using the method. The method includes generating first signaling information indicating whether MIMO technology is applied to an enhanced layer by LDM technology, generating second signaling information indicating an MIMO application method when the MIMO technology is applied to the enhanced layer, and generating a broadcast signal using the first signaling information and the second signaling information.

Abstract: A sensor includes a first electrode and a second electrode, and a photo-active layer between the first electrode and the second electrode. The photo-active layer includes a light absorbing semiconductor configured to form a Schottky junction with the first electrode. The photo-active layer has a charge carrier trapping site configured to capture photo-generated charge carriers generated based on the light absorbing semiconductor absorbing incident light that enters at least the photo-active layer at a position adjacent to the first electrode. The sensor is configured to have an external quantum efficiency (EQE) that is adjusted based on a voltage bias being applied between the first electrode and the second electrode.

Abstract: An apparatus for measuring a depth of a three-dimensional (3D) object includes a control unit generating the 3D object by adjusting parameters of a 3D pattern. A 3D display unit displays the 3D object with a preset depth. An input unit generates an input signal based on an input received from a user. A rail extends in a front and a rear of the 3D display unit. A moving body is movable on the rail. Movement of the moving body is adjusted based on the input signal. A distance sensor measures a distance to the moving body.

Abstract: A notching apparatus relates to a notching apparatus for notching an electrode sheet used in a secondary battery, the notching apparatus including: an ablation laser source unit configured to radiate ablation laser that performs an ablation operation on the electrode sheet; a notching laser source unit configured to radiate notching laser, wherein the notching laser is emitted to the place, in which the ablation operation has been performed by the ablation laser, to notch the electrode sheet; and an integral scanner unit to which the ablation laser radiated from the ablation laser source unit and the notching laser radiated from the notching laser source unit are incident. The integral scanner unit allows the ablation laser and the notching laser to be emitted to positions adjacent to each other on the electrode sheet.

Abstract: An organic sensor includes a first electrode, a second electrode, an organic active layer between the first electrode and the second electrode, and a protective layer between the organic active layer and the second electrode. Capacitance provided of the first electrode, the protective layer, and the second electrode is less than or equal to about 2×10?10 F.

Abstract: There is provided a method and system for 2D motion tracking of a subject engaging in physical exercise using a 2D camera. An image including a portion of a body of the subject is received and a first and a second point on the body are detected. A reference distance between the first and second point is determined, and a reference ratio is calculated based on the reference distance and at least one of the height and the width of the image. The first and second point are mapped into virtual space based on the reference ratio to obtain a first and second virtual point. A movement of at least one of the first and second point is detected in another image and mapped to a movement of a corresponding one of the first and second virtual point in virtual space which is output on a display interface.

Abstract: A display device includes: a display panel including a display area including pixels and a non-display area including a dummy pixel; a scan driver which supplies a scan signal to the display panel; a data driver which supplies a data signal to the display panel; and a timing controller which supplies a first control signal for controlling the scan driver and a second control signal for controlling the data driver. The dummy pixel is connected to a bad pixel among the pixels in the display area through a repair line, and a connection of the dummy pixel to the repair line is cut off in an initialization phase in which a voltage of an initialization power source is supplied.

Abstract: A connector assembly includes a housing having a housing base, a housing body protruding from the housing base, and a first housing protrusion provided inside the housing body. A protection part includes a protection base facing the housing base, a protection body protruding from the protection base, and a first protection arm extending from the protection body for engaging with the first housing protrusion. An insertion part of the assembly includes an insertion body for inserting inside of the protection part, and a first insertion protrusion protruding from the insertion body to interfere with the first protection arm. The first insertion protrusion deforms the first protection arm and causes the first protection arm to disengage from the first housing protrusion while the insertion body is inserted inside of the protection part.

Abstract: The present invention relates to a method and an apparatus for transmitting and receiving a reference signal in a wireless communication system. In the method, in order to dynamically switch an uplink (UL) Demodulation-Reference Signal (DM-RS) according to the communication environment, such as CoMP and MU-MIMO, a parameter set for generation of a reference signal sequence is configured to include a Virtual Cell Identifier (VCID) parameter configured by information of a total of 9 bits and a cyclic shift hopping initial value parameter cinitCSH, which is 9-bit information representing one integer value among 510 integer values. Therefore, it may be possible to achieve dynamic transmission or reception of a reference signal and channel estimation through the dynamic transmission or reception of the reference signal even when the communication environment dynamically changes as in a Cooperative Multiple Point transmission and reception (CoMP) scenario.

Abstract: A display device includes display panels; a frame supporting the display panels; a first magnetic body disposed on the frame; and a second magnetic body disposed on at least a part of the display panels, wherein the first magnetic body and the second magnetic body overlap each other in a direction parallel to a surface of the display panels and a direction perpendicular to the surface of the display panels.

Abstract: In a wireless communication system, a method of supporting sidelink (SL) communication by a UE may be provided. In this case, the method of supporting SL communication by the UE may comprise setting an SL DRX configuration through a higher layer, setting an SL DRX-related cycle and an SL DRX-related timer based on the set SL DRX configuration, receiving sidelink control information (SCI) and setting an SCI-based SL DRX-related cycle and an SCI-based SL DRX-related timer based on time resource allocation information of the received SCI.

Abstract: Disclosed are a photoelectric conversion device, and a sensor and an electronic device including the same. The photoelectric conversion device may include a first electrode and a second electrode and a photoelectric conversion layer between the first electrode and the second electrode. The photoelectric conversion layer includes a first material and a second material, which form a pn junction, and a third material that is different from the first material and the second material. The third material is configured to modify a distribution of energy levels of the first material or the second material.

Abstract: Diclosed are a pyrimido pyrimidinone compound having an effect of inhibiting PD-L1 expression, a pharmaceutical composition containing the pyrimido pyrimidinone compound as an active ingredient, and uses of the compound or composition. The pyrimido pyrimidinone compound can be effectively used for the treatment or prevention of cancer.

Abstract: A method and system for providing secure data communication between two or more user terminals in a communication network is proposed. The method may include receiving, from a first user terminal, a first instruction set configured to request that a private account be converted into a group account, the private account owned by a user of the first user terminal. The method may also include generating the group account jointly owned by at least the user of the first user terminal and a user of a second user terminal. The method may also include controlling a first database to store a second information set relating to the group account, and generating a second virtual database different from the first database. The method may also include copying the second information set stored in the first database and recording the copied second information set in the second virtual database.

Abstract: A method for performing random access in a wireless communication system is provided. The method includes transmitting a preamble for random access in uplink, receiving a random access response message including back-off information as a response to the preamble, and performing back-off using the back-off information when the random access has failed.