Abstract: Disclosed is an accelerator which includes a first to a K-th stage performing an NTT (Number Theoretic Transform) operation of first input data including a polynomial of a homomorphic ciphertext, the first to K-th stages being connected in series, and a first assist circuit generating a first to a K-th enable signal based on a degree of the polynomial of the first input data. Each of the first to K-th stages performs a butterfly operation of the first input data or corresponding output data of a previous stage in response to that the corresponding enable signal among the first to K-th enable signals indicates a first logical value, and bypasses the first input data or the corresponding output data of the previous stage in response to that the corresponding enable signal among the first to K-th enable signals indicates a second logical value.

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: The present application relates to a scheduling device and method of a mobile communication system. In the packet scheduling method, a base station performs packet scheduling for a terminal station in a mobile communication system, and a transport channel comprising an uplink shared channel (UL-SCH) and a physical channel comprising an uplink grant channel (UL-GCH) between the terminal and the base station are classified into a plurality of channels. In addition, in the packet scheduling method: a) the base station receives scheduling information from the terminal; b) the base station allocates an uplink resource for uplink traffic transmission for terminal based on the received scheduling information; and c) information for the allocated uplink resource is transmitted to the terminal through the UL-GCH of the physical channel.

Abstract: A ballistocardiogram sensor according to an embodiment of the inventive concept includes a lower substrate including a support part, a plurality of connection parts, and a vertical movement part, a lower electrode on the lower substrate, a piezoelectric sensing layer on the lower electrode, and an upper electrode on the piezoelectric sensing layer. The vertical movement part is spaced apart from the support part with the connection parts therebetween. The connection parts connect the vertical movement part and the support part. The piezoelectric sensing layer vertically overlaps the vertical movement part. The connection parts may have a serpentine shape.

Abstract: Provided is a biomaterial removing device including an air injection part, a first processing part spaced apart from the air injection part, and a second processing part spaced apart from the air injection part with the first processing part therebetween, wherein the first processing part includes a first biomaterial removing part configured to remove biomaterials included in air collected from the air injection part and a first monitoring part, and the second processing part includes a second biomaterial removing part configured to remove the residual biomaterials and a second monitoring part, wherein the first biomaterial removing part includes a dry air purifier, the second biomaterial removing part includes a wet air purifier, and the first biomaterial removing part and the second biomaterial removing part each include an image sensor.

Abstract: An image encoding/decoding method is provided. An image decoding method of the present invention may comprise deriving an intra-prediction mode of a current luma block, deriving an intra-prediction mode of a current chroma block based on the intra-prediction mode of the current luma block, generating a prediction block of the current chroma block based on the intra-prediction mode of the current chroma block, and the deriving of an intra-prediction mode of a current chroma block may comprise determining whether or not CCLM (Cross-Component Linear Mode) can be performed for the current chroma block.

Abstract: Disclosed herein is an apparatus for hardware metering using a memory-type camouflaged cell. The apparatus includes memory including at least one camouflaged memory cell in which a key is hidden by a designer in advance and a controller for controlling whether to block the supply of power to the memory. The controller may perform reading a key from a corresponding key location in the multiple memory cells of the memory based on key location information stored in the controller when a key is input from the outside, determining whether the key input from the outside is the same as the key read from the memory, setting an authentic flag based on the determination result, and performing control based on the set authentic flag such that the memory operates normally or the supply of power is blocked.

Abstract: The present disclosure provides a medical image analysis method and apparatus. The medical image analysis method according to an exemplary embodiment includes: receiving a frontal image of a spine; separating vertebral bodies from a vertebrae constituting the spine in the frontal image and extracting a contour of each of the vertebral bodies; deforming a 3D vertebral body model prepared in advance to match with the contour of each vertebral body; detecting an upper plane and a lower plane of each vertebral body in a matched 3D vertebral body model; determining an inclination of each vertebral body based on the upper plane and the lower plane of each vertebral body; and calculating a Cobb's angle based on the inclination of the vertebral body.

Abstract: A method for configuring an observable object as a digital twin in a digital twin system of any one domain is provided. The method for configuring a digital twin includes defining a purpose for expressing the observable as a digital twin in the domain, organizing data based on a role of the observable object in the domain, configuring the observable object into the digital twin based on the data for the purpose, and synchronizing the observable object and the digital twin.

Abstract: Disclosed are an electronic device and a non-transitory computer-readable storage medium. Conventionally, most of institutions, companies, etc. have defined and used their own data standards for the business purposes. Most of the data is stored in relational database in a structured format. Now as convergence between industries, new business and new data increases, an active data management system is becoming necessary. The electronic devices according to the disclosure can provide data hub device providing automatically extendable data management function interworking with an open data reference model management device (an active metadata management). Accordingly, the data hubs can exchange standardized data maps among them so as to quickly adapt to such changes in the open industry environment.

Abstract: Disclosed are methods and apparatuses for transmitting data using a random access procedure in a communication system. An operation method of a terminal in a communication system includes transmitting a first MsgA including an RA preamble #i and a payload to a base station; receiving, from the base station, a MsgB including information indicating that an RA preamble #k is reserved; and transmitting a second MsgA including the RA preamble #k and data to the base station in a preamble reservation period associated with the RA preamble #k.

Abstract: Disclosed are a method and a device for low latency communication in a communication system. An operation method of a base station comprises the steps of: transmitting first scheduling information of data units, transmitted through A sections in subframe #n, to a terminal through a first control channel in subframe #n; transmitting the data units to the terminal through the A sections; and transmitting second scheduling information of data unit(s), transmitted through B section(s) in subframe #(n+k) following subframe #n, to the terminal through a second control channel in subframe #(n+k). Therefore, the performance of the communication system can be improved.

Abstract: A drone swarm control method is provided. The drone swarm control method includes displaying a drone swarm and a three-dimensional (3D) terrain projected onto a virtual reality (VR) space by using a VR headset, based on user manipulation, selecting a small-scale drone swarm, provided in a region of interest (ROI) set in the 3D terrain, from the drone swarm by using a VR controller, based on the user manipulation, and dividing, by using a server, the ROI into a plurality of cells, respectively allocating the divided plurality of cells to drones included in the small-scale drone swarm, and automatically generating a 3D flight path of a drone allocated to each of the divided plurality of cells, based on user input information representing the small-scale drone swarm and the ROI.

Abstract: The apparatus for validating various kinds of data and a digital twin operation includes a validation target data selector configured to select a target to be validated among various kinds of input data, a data validator configured to validate individual data for each type of data selected for validation, and a data linkage validator configured to validate various kinds of multiple data by linking the various kinds of multiple data in order to detect an error in a process of linking the various kinds of multiple data.

Abstract: A method may comprise: generating first and second FA sequences corresponding to first and second FAs, respectively, based on a first sequence; mapping elements of first and second FA signals, which are respectively generated by modulating the first and second FA sequences, to first and second subcarrier groups corresponding to the first and second FAs, first base station, and first symbol; generating third and fourth FA sequences corresponding to the first and second FAs, respectively, based on a second sequence; mapping elements of third and fourth FA signals, which are respectively generated by modulating the first and second FA sequences, to third and fourth subcarrier groups corresponding to the first and second FAs, second base station, and second symbol; and transmitting a first transmission signal including the first and second FA signals, and a second transmission signal including the third and fourth FA signals.

Abstract: The disclosure relates to a non-dispersive infrared (NDIR) gas sensor which detects the concentration of gas with a simple structure and method by manufacturing an optical waveguide with a gas-permeable polymer material instead of a conventional cavity or chamber type. An optical signal travels through the optical waveguide of gas-permeable polymer by total internal reflection, and the gas naturally penetrates the optical waveguide without the use of separate inlet and outlet openings, so that the optical signal and gas particles come into contact with each other within the optical waveguide. Since the optical signal detected by a photodetector at the other end of the optical waveguide after traveling while contacting the gas particles has properties changed according to the concentration of the gas which they have contacted in the optical waveguide, it is possible to measure the concentration of a specific gas from the detected optical signal.

Abstract: Provided is an invention capable of securing versatility and precision in admittance control and enabling target force control on a surface of an object having a different property, in which a mutual contact force-based compensation method is used in the existing admittance control method to output a target force. To this end, the present disclosure provides a compensation algorithm that changes according to a mutual contact force with an object having a different physical property and mass-spring-damper parameters using data acquired while controlling a force input from a robot is provided. In addition, the present disclosure automatically performs tuning on coefficients related to a factor of a robot force control based on data obtained by executing a mutual contact force-based compensation in the conventional admittance control.

Abstract: The present invention discloses an image decoding method, the method including generating a candidate list including motion information derived from a spatial neighboring block and a temporal neighboring block adjacent to a current block; deriving motion information of the current block using the candidate list; generating a prediction block of the current block using the derived motion information; and updating the derived motion information in a motion information list, wherein the generating of the candidate list is performed in such a manner as to include at least one information of the motion information included in the updated motion information list in a block decoded before the current block.

Abstract: Disclosed is a method of operating an artificial intelligence system that provides a worker safety control solution and includes a plurality of smart belts and an artificial intelligence server, which includes detecting, by one of the plurality of smart belts, whether a worker is buried, generating, by the smart belt, biometric data and work environment data of the worker, generating, by the smart belt, an alarm signal based on the biometric data and the work environment data, transmitting, by the smart belt, the alarm signal, the biometric data, and the work environment data to the artificial intelligence server, and generating a plurality of rescue scenarios by inferring the biometric data and the work environment data when the artificial intelligence server receives a plurality of alarm signals from the plurality of smart belts.

Abstract: Disclosed herein are a method, an apparatus and a storage medium for encoding/decoding using a transform-based feature map. An optimal basis vector is extracted from one or more feature maps, and a transform coefficient is acquired through a transform using the basis vector. The basis vector and the transform coefficient may be transmitted through a bitstream. In an embodiment, one or more feature maps are reconstructed using the basis vector and the transform coefficient, which are decoded from the bitstream.