Abstract: A positron tomography device using a micropattern detector is provided. The positron tomography device comprises: a micropattern gas detection device accelerating electrons so as to generate second ionized electrons; a lead-out strip through which an electrical signal is transmitted by the second ionized electrons; and a signal processing unit for processing the electrical signal detected in the lead-out strip arranged at a predetermined position, wherein a plurality of micropattern gas detection devices is disposed in a ring shape, and the lead-out strip is disposed outside the micropattern gas detection device.

Abstract: The present invention relates to a method for preparing a fully ceramic capsulated nuclear fuel material containing three-layer-structured isotropic nuclear fuel particles coated with a ceramic having a composition which has a higher shrinkage than a matrix in order to prevent cracking of ceramic nuclear fuel, wherein the three-layer-structured nuclear fuel particles before coating is included in the range of between 5 and 40 fractions by volume based on after sintering.

Abstract: The present invention relates to a method for preparing a fully ceramic capsulated nuclear fuel material containing three-layer-structured isotropic nuclear fuel particles coated with a ceramic having a composition which has a higher shrinkage than a matrix in order to prevent cracking of ceramic nuclear fuel, wherein the three-layer-structured nuclear fuel particles before coating is included in the range of between 5 and 40 fractions by volume based on after sintering.

Abstract: The present invention relates to an optical fiber device for removing cladding light, an apparatus and a method for etching the same.

Abstract: The present invention relates to a method for preparing a fully ceramic capsulated nuclear fuel material containing three-layer-structured isotropic nuclear fuel particles coated with a ceramic having a composition which has a higher shrinkage than a matrix in order to prevent cracking of ceramic nuclear fuel, wherein the three-layer-structured nuclear fuel particles before coating is included in the range of between 5 and 40 fractions by volume based on after sintering.

Abstract: With regard to image data processing, a method of obtaining a focus term by using periodicity of the focus term is provided. The focus term may be used in a plurality of operation processes for processing image data.

Abstract: The disclosure relates to a demethylation apparatus and a demethylation method wherein a terahertz wave of a first frequency band including a methylation resonance frequency is irradiated onto a methylated molecule to demethylate the methylated molecule, and to a cancer therapy apparatus including the demethylation apparatus and a cancer therapy method including the demethylation method.

Abstract: The present disclosure relates to an ion gel having superior ion conductivity and mechanical strength, a polymer electrolyte including the same, and a manufacturing method thereof. The method of manufacturing the ion gel is capable of simply and effectively manufacturing a polymer matrix through a one-pot reaction, thus exhibiting simple processing steps to thereby manifest excellent processing efficiency and generate economic benefits. Moreover, the polymer electrolyte including the ion gel can exhibit superior ion conductivity and mechanical strength despite the low glass transition temperature (Tg) of the monomer contained in the polymer matrix.

Abstract: A method for receiving a multimedia service is provided. The method includes receiving service specific information for at least one multimedia service provided from different networks, selecting one service based on the service specific information, and receiving the selected service. The service specific information includes one of a first service map table including information about at least one service which is transmitted over a plurality of logical channels, and a second service map table including information about at least one service which is transmitted over a single logical channel. Each of the first and second service map tables includes asset-related information.

Abstract: A method and apparatus for processing image data are provided. An image data processing apparatus includes: a receiver configured to receive image data that represents a current frame; and a processor configured to perform an inverse fast Fourier Transform (IFFT) computation with respect to a first region of the current frame, and to obtain an IFFT computation result with respect to a second region of the current frame by using a result of the IFFT computation with respect to the first region.

Abstract: The present disclosure relates to a method and apparatus for phase unwrapping of an SAR interferogram based on an SAR offset tracking surface displacement model, in which the apparatus according to the present disclosure includes a Synthetic Aperture Radar (SAR) image acquisition unit that acquires two SAR images of a same object acquired at different times, a single look complex (SLC) image production unit that produces two SLC images corresponding to each of the two SAR images, an interferogram production unit that generates an SAR interferogram using SAR interferometry for the two SLC images, a surface displacement model production unit that produces an offset tracking surface displacement model using SAR offset tracking method for the two SLC images, an unwrapped residual interferogram generation unit that generates a residual interferogram by subtracting the SAR interferogram and the offset tracking surface displacement model, and generates an unwrapped residual interferogram by unwrapping the generated

Abstract: A method of obtaining a focus term by using a periodicity of the focus term is provided. The focus term may be used in a plurality of operation processes for processing image data.

Abstract: The present invention relates to a hydrogen recycling flight system and flight method, the hydrogen recycling flight system including: a flight fuselage which has at least one pair of wings at each of both sides of a body; a hydrogen gas balloon which is air-tightly connected to the flight fuselage; a hydrogen fuel cell which is connected with the hydrogen gas balloon and is installed outside or inside the flight fuselage; and a secondary battery which is charged with electricity generated from the hydrogen fuel cell, electricity generated from a solar cell provided at an outer peripheral portion of the flight fuselage, or electricity of an external power network, in which by using a switch, the hydrogen fuel cell is switched to a water electrolysis device or the water electrolysis device is switched to the hydrogen fuel cell, the hydrogen recycling flight system includes: a water tank which stores water generated from the hydrogen fuel cell; the water electrolysis device which electrolyzes the stored water;

Abstract: An image processing system for processing image data includes an image processing apparatus configured to process the image data to generate a hologram image; and a first memory and a second memory that store the image data. The image processing apparatus performs a first process and a second process in parallel, wherein the first process includes reading first data from the first memory and writing the first data to the second memory, and the second process includes reading second data from the second memory and writing the second data to the first memory.

Abstract: An image processing method and apparatus are provided. The image processing apparatus includes a receiver configured to receive image data; and a processor configured to generate first data by performing a Fourier calculation on the received image data, generate second data by performing prism phase computation on the first data, generate third data by adding the first data and the second data, and perform encoding based on the third data.

Abstract: A method and apparatus for converting first image data corresponding to a first depth and second image data corresponding to a second depth may be used for displaying a 3D image represented by the first image data and the second image data and performing FFT on the converted first image data and the converted second image data.

Abstract: A method of shielding acoustic wave, which is capable of completely shielding sound while reducing consumption of a shielding material is provided. The method of shielding acoustic wave, includes covering an object to be shielded with a first shielding material so that a lower portion of the object to be shielded is opened, covering an upper portion of the first shielding material by using a second shielding material which is an acoustic wave meta material having same absolute value but negative sign in density and bulk modulus comparing to the first shielding material, and covering the second shielding material with a third shielding material.

Abstract: Disclosed herein are technologies regarding a communication device and server which are capable of cryptographic communication based on quantum cryptography. A communication device for quantum cryptography authentication includes: an optical communication unit configured to receive a series of first quantum signals generated by passing through a first quantum filter of the communication device; a quantum signal generation unit configured to generate the first quantum signals by setting up the first quantum filter in a reception path for a series of second quantum signals generated and sent by a server; and a processor configured to select the setup of the first quantum filter based on a series of randomly generated first quantum states, and to control the quantum signal generation unit to generate the first quantum signals by using the first quantum filter.

Abstract: Disclosed herein are a quantum cryptography-based cryptographic communication system and an authentication, payment and transaction system via a relay device between a communication device and a server. A relay device for quantum cryptography authentication includes an optical receiver unit, an optical transmission unit, and a processor. The processor includes a quantum signal control unit, a user authentication unit, and a random number generation unit. The optical receiver unit receives a series of second quantum signals generated in such a manner that a series of first quantum signals generated by a first quantum filter and sent from a communication device pass through the second quantum filter of the relay device or a reception side, and the optical transmission unit transfers the series of second quantum signals to a server.

Abstract: Disclosed herein are technologies regarding a communication device and server which are capable of cryptographic communication based on quantum cryptography. The communication device includes: a quantum signal generation unit configured to generate a series of first quantum signals by using a first quantum filter; an optical transmission unit configured to send the series of first quantum signals to a server; and a processor configured to select the first quantum filter based on a series of randomly generated first quantum states, and to control the quantum signal generation unit to generate the series of first quantum signals by using the first quantum filter.