Abstract: A power semiconductor device includes a base semiconductor layer including impurities of a first conductivity type; a body portion provided on the base semiconductor layer and defined by a source trench, the body portion including a gate trench extending inwardly from an upper surface of the body portion; a gate electrode provided in the gate trench; a source electrode provided on the body portion and spaced apart from the gate electrode; and a drain electrode provided below the base semiconductor layer, wherein the body portion includes: a drift layer provided on the base semiconductor layer and including impurities of the first conductivity type; and a pair of shielding regions provided in the drift layer, spaced apart from each other in a horizontal direction, and spaced apart from the base semiconductor layer and the gate trench, the pair of shielding regions including impurities of a second conductivity type different from the first conductivity type.

Abstract: A target speech signal extraction method for robust speech recognition includes: initializing a steering vector for a target speech source and an adaptive vector, setting a real output channel of the target speech source as an output by the adaptive vector, initializing adaptive vectors for a noise and setting a dummy channel as an output by the adaptive vectors for the noise; setting a cost function for minimizing dependency between a real output for the target speech source and a dummy output for the noise; setting an auxiliary function to the cost function, and updating the adaptive vector for the target speech source and the adaptive vectors for the noise by using the auxiliary function and the steering vector; estimating the target speech signal by using the adaptive vector thereby extracting the target speech signal from the input signals; and updating the steering vector for the target speech source.

Abstract: A spatial LSM tree apparatus includes: a blockchain configured of a plurality of data blocks each storing point data distributed over an entire spatial area; a memory unit including a component table storing information about a memory component storing a first index of a most recently stored point data in the blockchain and all components of a spatial LSM tree indexing the point data to cover the entire spatial area; and a disk unit storing a secondary index for the point data in chronological order stored in the blockchain through a plurality of disk components formed in a hierarchical structure among a plurality of levels.

Abstract: The present invention provides an electrochemical apparatus for monitoring flow rate including a membrane having a space that is formed in a middle portion of the membrane and has a preset volume to contain an ionic fluid, a first electrode and a second electrode provided on both sides of the membrane, and a control unit configured to apply a voltage to the first electrode and the second electrode to change a state of the space to a concentration polarization state, wherein the membrane includes a fluid flow passage through which a fluid flows into and out of the space, and the control unit calculates a flow rate based on an ionic current generated by the fluid injected through the fluid flow passage in the concentration polarization state.

Abstract: An on-chip inductor includes a semiconductor substrate, a plurality of insulating layers stacked over the semiconductor substrate, and first, second and third spiral-shaped coil patterns. The first, second and third spiral-shaped coil patterns are inductively coupled to each other and sequentially disposed on respective layers among the plurality of insulating layers. Further, the first, second and third spiral-shaped coil patterns have respective first ends overlapping each other. The on-chip inductor further includes a first via connecting the respective first ends of the first and second spiral-shaped coil patterns to each other, and a second via connecting the respective first ends of the second and third spiral-shaped coil patterns to each other, where the first and second vias overlap each other.

Abstract: Provided are a dielectric barrier discharge (DBD) plasma reactor including dielectric particles in a packed-bed in a discharge zone, e.g., a DBD plasma reactor for non-oxidative coupling of methane in which an average gap distance between dielectric particles in the packed-bed is adjusted to improve methane conversion and/or product selectivity; a method of regenerating dielectric particles including removing coke, which sis produced by side reactions, from the dielectric particles deactivated by the coke by using a low temperature plasma in an oxidizing atmosphere in the reactor; a method of manufacturing C2+ hydrocarbons, the method including converting methane into C2+ hydrocarbons including ethylene and/or ethane by non-oxidative coupling of methane in the reactor; and a method of manufacturing hydrogen, the method including generating hydrogen from methane by non-oxidative coupling of methane in the reactor.

Abstract: In a hyper ledger-based blockchain network system, in order to adjust latency and throughput required by a specific hyper ledger-based network, by using a block size, an endorsement policy, the number of channels, and the number of vCPUs allocation, the latency and the throughput desired by a user are maintained.

Abstract: Provided is a multiplexing signal processing device based on a passive element including a plurality of signal converters that respectively process a plurality of input signals and are arranged in a matrix consisting of N rows and M columns and include N signal converter blocks respectively connected to N row unit output terminals; and M signal converter blocks respectively connected to M column unit output terminals. The signal converters each include a first diode having an input terminal connected to an input signal node, a second diode having an input terminal connected to the input signal node, and a ground resistor coupled to the input signal node.

Abstract: The present invention aims to dramatically increase the effect of hepatic arterial chemoembolization by developing human serum albumin-based nanoparticles, which are bioproteins that effectively carry Adriamycin in place of Adriamycin, an anticancer agent used in hepatic arterial chemoembolization. The human serum albumin nanoparticles carrying the Adriamycin not only intensively infiltrate the drug effectively into the cells but also have a synergistic effect that can induce a long-term therapeutic effect by utilizing the effect of continuous drug release from the particles.

Abstract: The present invention relates to an ultrasound treatment device for HIFU and an ultrasound image, and to a control method therefor. The ultrasound treatment device comprises: a plurality of image converters disposed on one surface of a probe assembly to transmit ultrasound signals to a target and receive signals reflected by the target to create an ultrasound image; a plurality of high intensity focused ultrasound (HIFU) converters disposed on the surface of the probe assembly so as to be located in different positions from the image converters, wherein the HIFU converters transmit ultrasound signals to a target to generate heat energy, thereby treating a tissue within a focusing area; and a control unit performing control such that the difference between apertures of converter arrays constituted by the image converters and the HIFU converters, respectively, is less than a predetermined value.

Abstract: Disclosed is a content addressable memory device including a memory cell array including a plurality of memory cells, each of which has a ferroelectric tunnel field effect transistor (FeTFET), and a match amplifier connected to the plurality of memory cells through a plurality of match lines. The FeTFET includes a first doped region including a first conductivity type, a second doped region including a second conductivity type different from the first conductivity type, a channel region formed between the first doped region and the second doped region, and a gate formed on the channel region and including a ferroelectric layer.

Abstract: Disclosed herein are an apparatus for estimating a camera pose using multi-view images of a 2D array structure and a method using the same. The method performed by the apparatus includes acquiring multi-view images from a 2D array camera system, forming a 2D image link structure corresponding to the multi-view images in consideration of the geometric structure of the camera system, estimating an initial camera pose based on an adjacent image extracted from the 2D image link structure and a pair of corresponding feature points, and estimating a final camera pose by reconstructing a 3D structure based on the initial camera pose and performing correction so as to minimize a reprojection error of the reconstructed 3D structure.

Abstract: A system includes an application processor configured to generate a read request and including a data memory; a host processor configured to generate a read command corresponding to the read request; and a data storage device including a data storage memory, wherein the data storage device transmits read data output from the data storage device according to the read command to the data memory of the application processor without passing the host processor.

Abstract: A method of predicting joining strength of joined dissimilar materials, includes performing a joining strength test on a plurality of specimens of joined dissimilar materials each having different joining information, and acquiring force-displacement data on a basis of the joining information; constructing, in a prediction system, an artificial neural network model for predicting the force-displacement data and the joining strengths from the joining information; learning the artificial neural network model by inputting the force-displacement data to the prediction system, the force-displacement data obtained through the joining strength test; inputting joining information to be predicted to the prediction system by using a computer running a software for performing prediction for the joining strength and connected to a host computer of the prediction system through a network; and predicting, by the learned artificial neural network model, force-displacement value and joining strength.

Abstract: A hybrid crosslinked polymeric membrane and a process for fabricating the same are provided. Specifically, the hybrid crosslinked polymer membrane comprises a glassy polymer and a ladder-structured polysilsesquioxane and has a crosslinked structure. The hybrid crosslinked polymer membrane can have an excellent permeability of carbon dioxide by virtue of an increase in the free volume and enhanced plasticization resistance, chemical resistance, and durability.

Abstract: A dialogue system includes: a storage configured to store a parameter tree including at least one parameter used for performing an action; a speech input device configured to receive speech from a user; an input processor configured to apply a natural language understanding algorithm to the received speech to generate a speech recognition result; a dialogue manager configured to determine an action corresponding to the received speech based on the speech recognition result, to retrieve a parameter tree corresponding to the action from the storage, and to determine additional information needed to perform the action based on the retrieved parameter tree; and a result processor configured to generate a dialogue response for requesting the additional information.

Abstract: The present invention relates to a method of producing glutathione, wherein photosynthetic membrane vesicles and enzymes catalyzing glutathione synthesis are combined and glutamate, cysteine and glycine are used as reaction substrates. As enzymes catalyzing glutathione synthesis, ?-glutamylcysteine synthetase and glutathione synthetase may be used together, or bifunctional glutathione synthetase may be used alone. According to the conventional methods, there is a problem in that expensive adenosine triphosphate should be continuously supplied when glutathione is produced. However, according to the present invention, since photosynthetic membrane vesicles are used as a source to regenerate adenosine triphosphate, it is possible to continuously produce glutathione without additionally adding adenosine triphosphate, thereby reducing production costs of glutathione.

Abstract: Disclosed are a method and a device for transferring a nanoparticle monolayer by using a capillary tube, wherein a nanoparticle monolayer present in a liquid-gas interface is locally and selectively separated and then transferred to a substrate by using a capillary tube. Accordingly, nondestructive and reproducible transfer can be made regardless of the surficial properties and structures of the substrate to which the monolayer is to be transferred. Therefore, the method and the device enable an in-situ high-speed inspection of harmful materials, such as an illegal drug and a residual pesticide, on surfaces of various solids such as fiber clothes, food and banknotes, and can be easily coupled to a microfluid channel having a small size and a complicated structure. Further, the method and the device can transfer a nanoparticle monolayer in a simple and inexpensive process without using special and expensive equipment.

Abstract: Disclosed herein is a quenching bias circuit device capable of operating without a time difference even in a variance in single photon avalanche diode (SPAD). The quenching bias circuit device includes: a light receiving element; a feedback current mirror circuit arranged between a supply voltage and the light receiving element and configured to induce a passive quenching operation so as to maintain a current flowing in the light receiving element to be constant; and a bias quenching circuit connected to a sensing node of the light receiving element and configured to perform an active quenching operation.

Abstract: Provided are a photocatalyst, a method for preparing the same, and a water splitting apparatus including the same. Without using an additional device, a photoelectrode with improved current density may be obtained through visible light absorption using the upconversion.