Abstract: A system for preventing a catalyst from overheating is provided. The system includes: a first reactor filled with a catalyst at least in part and configured to receive reaction gas and produce product gas; and a second reactor configured to cool a catalyst discharged from the first reactor. The catalyst is circulated between the first reactor and the second reactor by injecting the catalyst cooled in the second reactor into the first rector.

Abstract: Disclosed is an LPC residual signal encoding/decoding apparatus of an MDCT based unified voice and audio encoding device. The LPC residual signal encoding apparatus analyzes a property of an input signal, selects an encoding method of an LPC filtered signal, and encode the LPC residual signal based on one of a real filterbank, a complex filterbank, and an algebraic code excited linear prediction (ACELP).

Abstract: The present invention relates to a catalyst having surface-modified metal nanoparticles immobilized in a stationary phase in which a polymer electrolyte membrane is formed, and a preparation method thereof. The catalyst of the present invention may be used in a process for producing hydrogen peroxide by direct synthesis from oxygen and hydrogen.

Abstract: A touch window includes a substrate and an electrode structure on the substrate. The electrode structure includes an electrode layer on the substrate, and a resin layer on the electrode layer. The electrode layer includes a sensing electrode and a wire electrode, and the electrode structure has chromaticness indices (b*) of 0 (zero) or more.

Abstract: A semiconductor apparatus includes a clock buffer and a reference voltage generation unit. The clock buffer generates an internal clock signal, based on first and second clock signals, in a first operation mode, and generates the internal clock signal, based on the first clock signal and a reference voltage, when a normal operation test is performed in a second operation mode. The reference voltage generation unit generates the reference voltage when the normal operation test is performed in the second operation mode.

Abstract: The present disclosure relates to an organic electroluminescent device. The organic electroluminescent device of the present disclosure shows high luminous efficiency and good lifespan by comprising a specific combination of the plural kinds of host compounds and a specific hole transport compound.

Abstract: A turn broach machine may include a machining member machining a target to be cut; and an adaptor which is provided under the machining member, supports the machining member, and adjusts a position of the machining member. At the time of adjusting a position of a segment of the machining member from a plate provided in an adapter, the segment moves on an adjusting plate that is mechanically defined, such that work accuracy may be improved to increase marketability and a work time may be decreased to improve work convenience and productivity.

Abstract: The present disclosure relates to a catalyst composition including an organic ligand compound of a specific chemical structure; and a chromium compound and a method for synthesizing alpha-olefin using the catalyst composition, and when the catalyst composition is used, alpha-olefin may be stably synthesized with high selectivity and reaction activity.

Abstract: The present invention relates to an organic electroluminescent device. The organic electroluminescent device of the present invention shows high luminous efficiency and good lifespan by comprising a specific combination of the plural kinds of host compounds and a specific hole transport compound.

Abstract: An apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is a audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; a frequency band expander with the spectral band replication (SBR) standard for expanding the frequency band of the input signal whose output is transmitted to either the first conversion encoder or the LPC encoder based on the input characteristic; and a bitstream generator to generate a bitstream using an output signal of the first conversion encoder and an output signal of the LPC encoder.

Abstract: Disclosed are methods for managing transactions in a software defined network (SDN). A method performed in a controller may comprise generating a group message for modifying flow entries of a plurality of flow tables related to each other in a switch; and transmitting the group message to the switch. Thus, a plurality of flow tables having relevance to each other can be simultaneously modified so that modifications on a plurality of switches can be synchronized, and consistency of them can be guaranteed.

Abstract: An audio encoding apparatus to encode an audio signal using lossless coding or lossy coding and an audio decoding apparatus to decode an encoded audio signal are disclosed. An audio encoding apparatus according to an exemplary embodiment may include an input signal type determination unit to determine a type of an input signal based on characteristics of the input signal, a residual signal generation unit to generate a residual signal based on an output signal from the input signal type determination unit, and a coding unit to perform lossless coding or lossy coding using the residual signal.

Abstract: A black market collection system for tracing distributors of mobile malware comprises: a black market collection module for collecting web sites suspected to be a black market or apk files suspected to be a black market app by a search related to black markets through portal sites, and creating a URL list of the collected web sites suspected to be a black market; an app static analysis module for obtaining a source code by decompiling the collected apk file and detecting a URL of a site address distributing a corresponding app; a site analysis module for collecting apk files by analyzing the URL or each URL pattern of thereof and creating an apk collection pattern rule related to paths of collecting the apk files; and a database for storing the URL list of the collected web sites suspected to be a black market and the created apk collection pattern rule.

Abstract: Provided are an apparatus and method for detecting a fraudulent transaction using machine learning. The apparatus for detecting a fraudulent transaction using machine learning includes a settlement information input unit configured to receive settlement information of a user device in response to a settlement request from the user device, a feature information extraction unit configured to extract feature information from the received settlement information, and a fraudulent transaction determination unit configured to determine whether a transaction is a fraudulent transaction or not using a plurality of machine learning algorithms based on the extracted feature information.

Abstract: Disclosed are a content identifying method and apparatus, and an audio signal processing apparatus and method for identifying content. The audio signal processing method for registration includes splitting an original audio signal into a lower band signal and a higher band signal; modifying the higher band signal using an metadata associated to the original audio signal; storing a reference lower band fingerprint extracted from the lower band signal, a reference higher band fingerprint extracted from the modified higher band signal, and the associated metadata in database; and generating a reference audio signal synthesized using the lower band signal and the modified higher band signal.

Abstract: Disclosed herein is an activated EU-2 zeolite, including: pores having a diameter of 30 to 40 ? while maintaining the crystal structure of the EU-2 zeolite; and pores having a diameter of 40 to 200 ?, wherein the volume of the pores having a diameter of 30 to 40 ? is 0.01 to 0.06 cc/g, and the volume of the pores having a diameter of 40 to 200 ? is 0.07 to 0.4 cc/g.

Abstract: A chemical looping combustion apparatus for solid fuels using different oxygen carriers is provided. The chemical looping combustion apparatus includes: a solid fuel chemical looping combustor configured to receive solid fuels and to produce carbon dioxide and steam by combustion of the solid fuels; a gaseous fuel chemical looping combustor configured to receive gaseous fuels and to produce carbon dioxide and steam by combustion of the gaseous fuels; and a devolatilization reactor configured to produce solids and gases by devolatilizing the solid fuels, and the solid fuels received by the solid fuel chemical looping combustor and the gaseous fuels received by the gaseous fuel chemical looping combustor are the solids and the gases produced by the devolatilization reactor, respectively. Accordingly, a reaction rate and an amount of oxygen transfer can increase, and necessity for low-priced oxygen carriers and a make-up cost of low-priced oxygen carriers can be reduced.

Abstract: Disclosed is a method and an apparatus for embedding data in an audio signal based on a time domain, and a method and an apparatus for extracting data from an audio signal based on a time domain. The method for embedding data in an audio signal based on a time domain may include generating a time-domain insertion sequence from original data based on a weighting element, embedding the insertion sequence in a host audio signal, and transmitting the host audio signal in which the insertion sequence is embedded. The method for extracting data from an audio signal based on a time domain may include receiving a time-domain audio signal in which data is embedded, extracting a codeword from the audio signal, and synchronizing the audio signal based on the codeword.

Abstract: The present disclosure relates to an organic electroluminescent device. The organic electroluminescent device of the present disclosure shows high luminous efficiency and good lifespan by comprising a specific combination of the plural kinds of host compounds and a specific hole transport compound.

Abstract: The present disclosure relates to a novel organic compound and an organic electroluminescent device comprising the same, and the organic compound of the present disclosure may be used for an organic material layer of the organic electroluminescent device, thereby improving the light emitting efficiency, driving voltage, lifetime, and the like of the organic electroluminescent device.