Abstract: The present application relates to an electrode catalyst for water electrolysis including a first transition metal foam, a metal layered double hydroxide (LDH)/metal oxide mixed layer which contains a second transition metal and a third transition metal that are formed on the surface of the first transition metal foam, and fourth transition metal oxyhydroxide nanoparticles formed on the surface of the mixed layer, in which the mixed layer surface contains the metal layered double hydroxide.

Abstract: Provided is a method of training a prediction model, the method including obtaining molecular descriptors of molecules based on a molecular database, pre-training a pre-training neural network based on the molecular descriptors, and adjusting the pre-training neural network such that the pre-training neural network matches a target task, by applying a training data set labeled corresponding to the target task to the pre-trained pre-training neural network.

Abstract: A flip-flop is provided. The flip-flop includes: a master latch; and a slave latch. The master latch includes: a first circuit configured to, based on a clock signal, a data input signal, and a first data signal, generate a second data signal complementary to the data input signal; a second circuit configured to, based on the clock signal, an inverted data input signal, and the second data signal, generate the first data signal complementary to the inverted data input signal; and a third circuit configured to generate a latch signal based on the clock signal, an input of the slave latch, and the second data signal. The slave latch is configured to latch the input of the slave latch based on the clock signal and the latch signal.

Abstract: A flip-flop configured to generate an output toggling according to an input clock includes an inverter configured to generate the output by inverting a first data signal, a first circuit configured to generate a second data signal based on an input clock and a latch signal, a second circuit configured to generate the latch signal based on the input clock and the second data signal, and a third circuit configured to generate the first data signal using the input clock, the second data signal, and the latch signal, wherein the third circuit is further configured to pull down the first data signal, independently of the second data signal, using the input clock and the latch signal.

Abstract: Disclosed are an artificial intelligence algorithm-based wireless power transmitter, wireless power receiver, and wireless power charging system that are capable of high-speed response to environmental changes and that can optimize the power efficiency of a wireless power receiver, estimate a dynamic location from a signal received from the wireless power receiver using artificial intelligence technology, and dynamically transmit wireless power to a prioritized wireless power receiver according to a power state.

Abstract: A sense amplifier flip-flop includes a first stage configured to generate, in response to a rising edge of a clock signal, a first latch signal and a second latch signal by pulling down a first pull-down node or a second pull-down node according to a data input and an inverted data input, wherein the first stage includes a bridge circuit configured to electrically connect the first pull-down node and the second pull-down node to each other in response to an activated bridge signal, and a control circuit configured to activate the bridge signal when the data input transitions while the clock signal is logic high.

Abstract: The present disclosure is an apparatus and a method for providing a precise motion estimation learning model including, a database unit which stores a standard dataset labeled according to a first number of key points, an animation dataset labeled according to a second number of key points which is larger than the first number, and a photorealistic dataset having the second number of key points, a standard learning unit which learns the standard dataset for motion estimation to generate a standard learning model, an animation learning unit which retrains the animation dataset based on a weight of the standard learning model to generate an animation learning model, and a motion estimation learning unit which trains the photorealistic dataset based on the weight of the animation learning model to finely tune to generate a precise motion estimation learning model.

Abstract: Provided is random access method, performed by terminal for uplink data transmission during random access process between cellular based machine communication terminal and base station. The method includes performing random access process between cellular based machine communication terminal and base station, and the random access process includes selecting random access resource by considering coverage level and whether to support multi-tone transmission or not.

Abstract: A method of preparing a light-emitting material, the method including mixing a first precursor solution including a first precursor and a first solvent with a second precursor solution including a second precursor and a second solvent to form a precipitate, and separating the precipitate to obtain a light-emitting material, wherein a solubility of the first precursor in the first solvent may be greater than a solubility of the first precursor in the second solvent, and a solubility of the second precursor in the second solvent may be greater than a solubility of the second precursor in the first solvent. A light-emitting material prepared by the method, and a light-emitting device including the light-emitting material is also described.

Abstract: A video coding method and apparatus select an optimal method from among various chrominance space conversion methods for the current chroma block's original signals, predictors, or residual signals, based on correlations between chroma channel components. The video coding method and the apparatus perform chrominance space conversion of Cb and Cr components using the selected method.

Abstract: The method of manufacturing a self-assembled nanoparticle-releasing soluble microneedle structure comprises: dissolving a biocompatible amphiphilic block copolymer and a hydrophobic drug in a solvent to prepare a solution comprising a uniform mixture of the biocompatible amphiphilic block copolymer and the hydrophobic drug; removing the solvent from the solution to prepare a film comprising the uniform mixture; preparing an aqueous solution comprising an additive and a hydrophilic drug; adding the aqueous solution to the film and uniformly dispersing the film in the aqueous solution; injecting the aqueous solution into a template; and drying the template and separating the microneedle structure from the template.

Abstract: Disclosed is a solar cell module. The module includes a solar cell including a plurality of unit battery cells electrically connected to each other via internal connection electrodes; an upper cover disposed on a front face of the solar cell; a light-conversion coating layer coated on an inner face of the upper cover, wherein the light-conversion coating layer includes upconversion nano-particles for absorbing near-infrared rays and emitting light having a wavelength in a visible region; a lower cover disposed on a rear face of the solar cell; a first filling material layer formed between the solar cell and the light-conversion coating layer; and a second filling material layer formed between the solar cell and the lower cover.

Abstract: The present invention relates to an image encoding/decoding method and device. The image decoding method according to the present invention comprises the steps of: decoding a prediction mode index; determining whether the prediction mode index indicates function-based intra prediction; inducing a parameter (s) for generating a function, when the prediction mode index indicates the function-based intra prediction; generating the function on the basis of the induced parameter (s); and performing intra prediction by using the generated function.

Abstract: A Tunnel Oxide Passivated Contact (TOPCon) solar cell, and a method therefor are provided. The TOPCon solar cell includes: a silicon substrate; a tunneling layer formed on a surface of the silicon substrate; a polycrystalline silicon layer formed on a surface of the tunneling layer; a polycrystalline germanium layer formed on a surface of the polycrystalline silicon layer; a lower passivation layer formed on a surface of the polycrystalline germanium layer; and a lower electrode formed on the lower passivation layer and electrically connected to the polycrystalline germanium layer.

Abstract: An external magnetic field-coupled plasma atomic layer deposition device of the disclosure includes: a chamber with a stage inside which a substrate is placed; a plasma generation unit that generates plasma in the chamber by forming an electric field; and a magnetic field forming unit provided outside the chamber, which forms a magnetic field to form a density of plasma inside the chamber at a high density.

Abstract: An ion beam etching apparatus comprising a plasma chamber, a plasma source disposed on top of the plasma chamber and configured to generate plasma, a process chamber defining a treating area where a substrate is treated, a grid structure disposed between the process chamber and the plasma chamber, wherein the grid structure receives the plasma, and supplies ions or radicals toward the substrate, a discharge line connected to the grid structure, and a first pumping system connected to the discharge line, wherein particles or polymers within the grid structure are discharged through the discharge line.

Abstract: Disclosed are a method and apparatus for random access using random beam-switching in a wireless network environment. The random access method using random beam-switching in a wireless network environment includes selecting a given preamble when receiving a synchronization signal block from a base station, transmitting, to the base station, a first message including the selected preamble by using a sequential beam-sweeping method, transmitting a third message for a connection request for uplink data transmission when receiving, from the base station, a second message responding to the transmitted first message, and completing a random access channel operation when receiving a fourth message responding to the transmitted third message.

Abstract: A semiconductor chip for correcting an aligned error comprises a memory array is provided. The semiconductor chip includes a transceiver circuit and an Error Correction Code (ECC) circuit. The ECC circuit is configured to receive target data to be encoded, encode the target data by multiplying a generator matrix of a previously generated ECC by the target data, store the encoded target data in the memory array, check a data transformed from the encoded target data, and generate an error corrected data by correcting only a single error of the transformed data and an adjacent error that does not exceed a first value boundary of a predetermined number of bits by using a parity check matrix of the ECC, and output the error corrected data.

Abstract: Various embodiments of the disclosure disclose a method for manufacturing a micro Light Emitting Diode (LED) display. The disclosed manufacturing method may include coating a face of a substrate including a circuit portion with a first thickness of a polymer adhesive solution containing a plurality of metal particles, attaching an array of micro LED chips on the polymer adhesive solution, physically connecting a connection pad for each of the array of micro LED chips to the metal particles through heating and pressing the attached plurality of micro LED chips to descend through the polymer adhesive solution, and chemically bonding the metal particles to the connection pad and the circuit portion through heating and pressing so that the micro LED chips are electrically connected to the circuit portion. Various other embodiments are also possible.

Abstract: A semiconductor device with multiple zero differential transconductance includes: a conductive substrate; a first insulating layer and a second insulating layer disposed on the conductive substrate; a first semiconductor and a second semiconductor disposed on first portions of the first insulating layer and the second insulating layer, respectively; a first buffer layer and a second buffer layer disposed on electrode contact areas of the first semiconductor and the second semiconductor, respectively; and an anode electrode and a cathode electrode disposed on second portions, which are different from the first portions, of the first insulating layer and the second insulating layer and on the first buffer layer and the second buffer layer, respectively, wherein the first semiconductor and the second semiconductor are disposed in parallel with each other and connected by the anode electrode and the cathode electrode.