Abstract: Disclosed is a method of manufacturing a polyurethane filter foam having excellent air permeability, elasticity, and restoring force. In the method of manufacturing the polyurethane filter foam, the cell size of the filter foam is made regular by controlling the pressure by adjusting the diameter of the foaming head of a foaming machine, rather than adding a cell opener, cell irregularity caused by poor dispersion of the cell opener is alleviated, and air permeability, porosity, and compression set are excellent.

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.

Abstract: Provided are a negative electrode active material including a three-dimensional composite. The three-dimensional composite includes secondary particles containing a silicon carbide-based (SiCx, 0<x?1) nanosheet having a bent portion and amorphous carbon. Also provided are a method of producing the same, and a negative electrode and a lithium secondary battery including the negative electrode active material.

Abstract: Disclosed herein is a method of printing a nanostructure including: preparing a template substrate on which a pattern is formed; forming a replica pattern having an inverse phase of the pattern by coating a polymer thin film on an upper portion of the template substrate, adhering a thermal release tape to an upper portion of the polymer thin film, and separating the polymer thin film from the template substrate; forming a nanostructure by depositing a functional material on the replica pattern; and printing the nanostructure deposited on the replica pattern to a substrate by positioning the nanostructure on the substrate, applying heat and pressure to the nanostructure, and weakening an adhesive force between the thermal release tape and the replica pattern by the heat.

Abstract: The present invention relates to a method for designing a cycloidal gear tooth profile of a gear shift actuator, the method designing a profile to have a backlash through a change in the radius of a rolling circle of an internal or external tooth profile of a cycloidal gear, and thus enables the smooth engagement of internal teeth and external teeth, reduces the engagement range of the internal teeth and the external teeth to have excellent durability and enable power loss to be reduced, and enables the shape machining of the gear by using general cycloidal gear machining, thereby facilitating manufacturing and being capable of improving machining precision.

Abstract: Disclosed herein is a method of depositing a transition metal single-atom catalyst including preparing a carbon carrier, and depositing a transition metal single-atom catalyst on the carbon carrier, in which the carbon carrier is surface-treated by an oxidation process, and wherein the deposition is carried out by an arc plasma process.

Abstract: A vehicle seat reinforcement device includes a leg portion mounted on a floor panel, a seat cushion frame slidably mounted on the leg portion, and a load reinforcing structure connected between the leg portion and the seat cushion frame, wherein when a seat belt anchorage load is transferred to the seat cushion frame, the seat cushion frame is locked to the leg portion by the load reinforcing structure.

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.

Abstract: In one example, a semiconductor device comprises a substrate having a top surface and a bottom surface, an electronic device on the bottom surface of the substrate, a leadframe on the bottom surface of the substrate, the leadframe comprising a paddle, wherein the paddle is coupled to the electronic device, and a lead electrically coupled to the electronic device. The semiconductor device further comprises a first protective material contacting the bottom surface of the substrate and a side surface of the electronic device.

Abstract: A system for analyzing a passive network is provided, the system being configured to extend the frequency band with the interpolation function of the low frequency band and the extrapolation function of the high frequency band for S-parameters with limited measurement band, adjust the propagation delay time for the band-extended S-parameter to derive the final band-extended S-parameter, and analyze the time response of the passive network on the basis of the output voltage waveform estimated by performing convolution on the impulse response to the derived final band-extended S-parameter and the input voltage waveform of the passive network, thereby improving the time response performance of the passive network without a complex circuit conversion process, and making it possible to be capable of lightweight structures. Furthermore, it is possible to improve the accuracy of the impulse response by adjusting the propagation delay time removed from the band-limited S-parameter.

Abstract: The present invention relates to a method of processing a band-limited S-parameter for a transient analysis, the method including removing a propagation delay time of a band-limited S-parameter signal; generating an interpolation function for a real part of the band-limited S-parameter signal; generating an extrapolation function for the real part of the band-limited S-parameter signal; and generating an extended S-parameter signal with the interpolation function and the extrapolation function. Accordingly, by extending the interpolation function and the extrapolation function ensuring continuity with the real part, there is an advantage that the causality problem does not occur in the impulse response of the extended S-parameter signal.

Abstract: Disclosed is a method of processing an S-parameter to analyze transient phenomena in a passive network, the method including: generating an extrapolation function related to a real part of a measured S-parameter signal; generating an expanded S-parameter signal by the extrapolation function; and setting an optimum degree and an optimum expansion frequency of the expanded S-parameter signal. Thus, the extrapolation function where continuity from the real part of the measured S-parameter signal is ensured is used such that causality in an impulse response of the expanded S-parameter signal can be maintained without problems.

Abstract: An electronic device provides a status messaging service. The electronic device includes a communication module, a display module, and a processor that is configured to acquire a status message of the electronic device, and during a service discovery operation, add the acquired status message to a session initiation protocol (SIP) Options message and transmitting the SIP Options message. A method includes acquiring a status message of the electronic device, and adding the acquired status message to a session initiation protocol (SIP) Options message and transmitting out the SIP Options message during a service discovery operation.

Abstract: A heated electrostatic chuck is provided, including a base having an upper surface and peripheral side surfaces, a thermal barrier coating formed by plasma deposition directly on at least the upper surface of the base, at least one heating element formed on portions of the thermal barrier coating, an electrically insulating layer formed on the heating element and exposed portions of the thermal barrier coating, at least one chucking electrode formed on at least a portion of the electrically insulating layer, and a protective layer formed on the chucking electrode.

Abstract: An apparatus for outputting audio signals. The apparatus for outputting audio signals includes a pulse density modulation (PDM) unit for PDM modulating an input audio signal to output a modulated audio signal, a driving signal generator for generating at least one driving signal to control switching amplification operations based on the modulated audio signal, and a power switching amplifier having at least one switch that is turned on or turned off in response to the driving signal and performs the switching amplification operations for using the at least one switch to output an amplified audio signal that corresponds to the modulated audio signal, wherein the at least one switch includes at least one from among a gallium nitride (GaN) transistor, gallium arsenide (GaAs) transistor, and a silicon carbide (SiC) transistor.

Abstract: A method of emulating a sound of an audio apparatus by using a sound emulation apparatus includes obtaining k past samples (where k is a natural number that is equal to or greater than 1) by delaying a current sample of an audio signal; applying a plurality of characteristic functions indicating an input/output relationship of the audio apparatus to the current sample and the k past samples, respectively; and adding the current sample and the k past samples, to which the plurality of characteristic functions have been applied, respectively, to generate an emulation sound of the audio apparatus.

Abstract: An audio signal processing apparatus and method are provided. The apparatus includes a stability determiner and a sigma-delta modulator. The stability determiner divides a frequency band of an input audio signal into one or more sub-frequency bands, compares a level of the input audio signal for each of the sub-frequency bands with a threshold for the sub-frequency band, and generates a stability determination signal according to a result of the comparison. The sigma-delta modulator sigma-delta modulates the input audio signal according to the stability determination signal, and outputs a modulation signal.

Abstract: An electronic device provides a status messaging service. The electronic device includes a communication module, a display module, and a processor that is configured to acquire a status message of the electronic device, and during a service discovery operation, add the acquired status message to a session initiation protocol (SIP) Options message and transmitting the SIP Options message. A method includes acquiring a status message of the electronic device, and adding the acquired status message to a session initiation protocol (SIP) Options message and transmitting out the SIP Options message during a service discovery operation.

Abstract: The present invention relates to a polynucleotide that is active to an acetyl glutamate synthase and acetyl ornithinase which are associated with ornithine or arginine biosynthesis from Corynebacterium glutamicum. The present invention also relates to a polypeptide encoded by said polynucleotide, a recombinant vector comprising said polynucleotide, to a transformant obtained by introducing said recombinant vector to a host microorganism for producing L-ornithine or L-arginine, and transforming the recombinant vector, and to a method for producing L-ornithine or L-arginine by culturing said transformant. The activity of the transformant of the present invention to an acetyl glutamate synthase and acetyl ornithinase is increased as compared to an intrinsic activity, and thus L-ornithine or L-arginine can be produced, at a high yield rate, from the transformant of the present invention.

Abstract: A heated electrostatic chuck is provided, including a base having an upper surface and peripheral side surfaces, a thermal barrier coating formed by plasma deposition directly on at least the upper surface of the base, at least one heating element formed on portions of the thermal barrier coating, an electrically insulating layer formed on the heating element and exposed portions of the thermal barrier coating, at least one chucking electrode formed on at least a portion of the electrically insulating layer, and a protective layer formed on the chucking electrode.