Abstract: Disclosed herein is a multi-channel device for detecting plasma at an ultra-fast speed, including: a first antenna module connected to a first output terminal in contact with a substrate on a chuck of a process chamber and extending to ground, and receiving a first leakage current leaking through the substrate to increase reception sensitivity of the leakage current; a first current detection module detecting the first leakage current; a current measurement module receiving the first leakage current output from the first current detection module, and extracting the received first leakage current for each predetermined period to generate a first leakage current measurement information; and a control module comparing the first leakage current measurement information with a reference value to generate first arcing occurrence information.

Abstract: An image signal processor includes a register and a disparity correction unit. The register stores disparity data obtained from a pattern image data that an image senor generates, and the image sensor includes a plurality of pixels, and each of the pixel includes at least a first photoelectric conversion element and a second photoelectric conversion element. The image sensor generates the pattern image data in response to a pattern image located at a first distance from the image sensor. The disparity correction unit corrects a disparity distortion of an image data based on the disparity data to generate a result image data, and the image senor generates the image data by capturing an object.

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: The present disclosure relates to a method of providing a proximal user networking service by means of a near-field communication network and a system therefor. Specifically, the present disclosure implements an environment in which, when an ad packet is broadcast using a certain host device, a guest device that receives the ad packet in the vicinity uploads relevant information to a service server, thereby allowing the host device to check guest devices that have been present in proximity thereto in the vicinity.

Abstract: The present disclosure relates to a bifunctional catalyst for manufacturing a hydrocarbon from carbon dioxide and hydrogen. The bifunctional catalyst includes a carbon composite including cobalt (Co) and nitrogen (N) atoms forming a coordinate bond with the cobalt, and metal particles which exhibit a catalytic activity for a Fischer-Tropsch synthesis reaction and which are dispersed on the inner pore surface and/or the outer surface of the carbon composite support, thus simultaneously promoting a reverse water gas shift reaction and the Fischer-Tropsch synthesis reaction.

Abstract: An operation method of a terminal in a communication system may include: receiving, from a base station, quality of service (QoS) information for preamble groups and information on preambles belonging to each of the preamble groups; selecting one preamble group from among the preamble groups based on the QoS information and a QoS of the terminal; selecting a preamble within the one preamble group based on the information on preambles belonging to each of the preamble groups; transmitting a first message including the selected preamble to the base station; and receiving, from the base station, a second message that is a response to the first message.

Abstract: The present disclosure relates to a method for non-oxidative direct conversion of methane. Specifically, in the method, a methane/hydrogen gas is introduced into an Inconel 600 reactor at a superficial velocity of 100 to 200 cm·min?1 and a catalyst is not externally introduced into the reactor. Under the conditions, a non-oxidative direct methane conversion reaction is performed in the Inconel 600 reactor. The method maximizes the reaction rate, minimizes coke formation, and increases the yields of C2 hydrocarbon compounds and aromatic compounds.

Abstract: An operation method of a terminal in a communication system may comprise: receiving, from a base station, basis preamble information and linear combination information; generating a superposed preamble by using the basis preamble information and the linear combination information; transmitting, to the base station, a first message including the generated superposed preamble; and receiving, from the base station, a second message that is a response signal for the first message.

Abstract: A soft-decision decoding method used in a digital communication system may comprise: using a hard-decision Bose-Chadhuri-Hocquenghem (BCH) decoder as a stopping rule of ordered statistic decoding (OSD) before performing the OSD on an input signal; and performing the OSD when a highest order of an error position equation generated in the BCH decoder is not equal to a number of solutions found in the BCH decoder.

Abstract: An operation method of a terminal may include: receiving, from a base station, an addition value KN, information on linear combination coefficient matrices for respective numbers of transport blocks, and configuration information on each linear combination coefficient matrix; dividing a source block into M transport blocks; selecting one linear combination coefficient matrix among the linear combination coefficient matrices based on M; generating (M+KN) network coding blocks by performing network coding on the M transport blocks with the selected one linear combination coefficient matrix; and transmitting, to the base station, messages each including one network coding block among the network coding blocks, a control index of the one linear combination coefficient matrix, and a preamble.

Abstract: An operation method of a receiving node may include performing a decoding operation for calculating first and second output transform values corresponding to first and second unit output nodes in each of a plurality of operation units constituting the polar decoder, based on first and second input transform values corresponding to first and second unit input nodes, and the decoding operation may include setting initial values of first and second variables for calculating the first output transform value; performing an iterative loop operation for updating the first and second variables; and calculating the first output transform value based on values of the first and second variables updated until a time when the iterative loop operation is terminated, wherein the iterative loop operation is terminated without performing iterations in which the first and second variables are determined not to be updated among a plurality of iterations.

Abstract: An operation method of a terminal may comprise receiving, from a base station, information of target transmission points targeted for a report of first channel state information (CSI) among the plurality of transmission points; receiving a first CSI-reference signal (CSI-RS) from the target transmission points; transmitting the first CSI determined based on the first CSI-RS to the base station; receiving, from the base station, information on a first transmission point determined based on the first CSI; receiving, from the first transmission point indicated by the information on the first transmission point, a second CSI-RS; receiving, from the base station, information on a requirement; and transmitting, to the base station, a second CSI including a transmission parameter for achieving the requirement.

Abstract: An operation method of a terminal may include: receiving, from a base station, an addition value KN, information on linear combination coefficient matrices for respective numbers of transport blocks, and configuration information on each linear combination coefficient matrix; dividing a source block into M transport blocks; selecting one linear combination coefficient matrix among the linear combination coefficient matrices based on M; generating (M+KN) network coding blocks by performing network coding on the M transport blocks with the selected one linear combination coefficient matrix; and transmitting, to the base station, messages each including one network coding block among the network coding blocks, a control index of the one linear combination coefficient matrix, and a preamble.

Abstract: An operation method of a terminal may comprise receiving, from a base station, information of target transmission points targeted for a report of first channel state information (CSI) among the plurality of transmission points; receiving a first CSI-reference signal (CSI-RS) from the target transmission points; transmitting the first CSI determined based on the first CSI-RS to the base station; receiving, from the base station, information on a first transmission point determined based on the first CSI; receiving, from the first transmission point indicated by the information on the first transmission point, a second CSI-RS; receiving, from the base station, information on a requirement; and transmitting, to the base station, a second CSI including a transmission parameter for achieving the requirement.

Abstract: The present invention relates to a catalyst for selective hydrogenation of acetylene and a preparation method thereof. More specifically, the catalyst and preparation method maximize the catalytic reaction rate at various reaction temperatures and suppress side reactions to minimize the generation of green oil and cokes and to improve the deactivation rate of a catalyst when preparing ethylene from acetylene. Thus, the catalyst and the preparation method provide a high conversion rate of acetylene and a high ethylene production yield.

Abstract: The present invention relates to a method and system for providing an IoT community service using a beacon, and specifically, to a service providing method and system, which allows the beacon to broadcast an arbitrary packet using a Bluetooth network, and allows a user terminal receiving the packet to use the community service through a wide area network.

Abstract: An operation method of a receiving node may include performing a decoding operation for calculating first and second output transform values corresponding to first and second unit output nodes in each of a plurality of operation units constituting the polar decoder, based on first and second input transform values corresponding to first and second unit input nodes, and the decoding operation may include setting initial values of first and second variables for calculating the first output transform value; performing an iterative loop operation for updating the first and second variables; and calculating the first output transform value based on values of the first and second variables updated until a time when the iterative loop operation is terminated, wherein the iterative loop operation is terminated without performing iterations in which the first and second variables are determined not to be updated among a plurality of iterations.

Abstract: The present invention relates to a catalyst for oxygen-free direct conversion of methane and a method of converting methane using the same, and more particularly to a catalyst for oxygen-free direct conversion of methane, in which the properties of the catalyst are optimized by adjusting the free space between catalyst particles packed in a reactor, thereby maximizing the catalytic reaction rate without precise control of reaction conditions for oxygen-free direct conversion of methane, minimizing coke formation and exhibiting stable catalytic performance even upon long-term operation, and to a method of converting methane using the same.

Abstract: The present invention relates to a method and system for providing a community service by utilizing short-range broadcasting, and specifically, to a community service providing method and a system for the same, which allow devices to broadcast arbitrary packets using a Bluetooth network, and allow devices receiving the packets to use the community service through a wide area network.

Abstract: Proposed is a carbon dioxide conversion system and method. More particularly, proposed is an eco-friendly carbon dioxide conversion system and method, the system and the method returning, in the recycling of Fischer-Tropsch synthesis reaction off-gas, a part of the off-gas to a Fischer-Tropsch reactor and producing a synthetic natural gas through methanation of the remainder of the off-gas, thereby improving overall energy efficiency and carbon efficiency, and thus a useful hydrocarbon fuel is produced from carbon dioxide, thereby providing a carbon dioxide-reducing effect.