Abstract: The present invention relates to a metal doped organic framework-based catalyst, and an oxygen sensing electrode using same, wherein the 3D oxygen sensing electrode is manufactured easily and quickly at a low cost by using a trace amount of noble metal, by means of a polymer/graphene/nanocatalyst composition prepared by 3D printing and nanocatalyst synthesis on the basis of a metal doped organic framework and the 3D oxygen sensing electrode is capable of selectively sensing gases and dissolved oxygen and exhibits long-term stability.

Abstract: The present invention provides a hyper-branched polymer having a three-dimensional structure, which is applicable to treatment of harmful substances in the atmosphere and has antibacterial activity, as well as a method for manufacturing the same. Further, the present invention provides an antibacterial spherical activated carbon which is ultimately obtained using the hyper-branched polymer as a precursor. The antibacterial spherical activated carbon, which is the final product according to the present invention, may induce a chemical bonding of ion bonds in an antibacterial component to a carrier without use of a separate binder, thereby stably immobilizing the antibacterial component. Furthermore, it is possible to adjust a loading amount of the antibacterial component as well as a specific surface area of the carrier through a simple operation.

Abstract: According to the present disclosure, a hot stamping forming method for forming components having various strength according to parts through cooling control for each position includes: setting a required strength for each product part for a sheet supplied into a multi-point forming mold device to which a plurality of forming modules are coupled; adjusting an arrangement of the plurality of forming modules according to the set required strength; and performing cooling control for each part by controlling an amount of cooling air or mist sprayed to the sheet by the air jet nozzle in order to achieve a required cooling speed for each strength part of the supplied sheet, wherein components having various shapes are formable with respect to the supplied sheet in a single mold.

Abstract: The present invention relates to an apparatus and method for generating a bidirectional chirp signal by using a phase accumulation polynomial, and the apparatus for generating a bidirectional chirp signal according to an embodiment may include an extraction unit extracting time interval information from the output of a frequency accumulator, a polynomial handling unit applying the phase accumulation polynomial to the extracted time interval information to generate a polynomial output value, and a bidirectional chirp signal output unit outputting a bidirectional chirp signal on the basis of the generated polynomial output value.

Abstract: The present invention relates to an apparatus and method for generating a bidirectional chirp signal by using a phase accumulation polynomial, and the apparatus for generating a bidirectional chirp signal according to an embodiment may include an extraction unit extracting time interval information from the output of a frequency accumulator, a polynomial handling unit applying the phase accumulation polynomial to the extracted time interval information to generate a polynomial output value, and a bidirectional chirp signal output unit outputting a bidirectional chirp signal on the basis of the generated polynomial output value.

Abstract: Disclosed is a method for driving a liquid crystal display, in which the response speed of a liquid crystal is improved by the change of gate pulse voltage. The method comprises the steps of: sequentially generating a plurality of gate pulse voltages having 1st to 3rd levels while being synchronized with vertical clock signal in said 1 vertical period; in invert driving, dividing the generating period of the plural gate pulse voltages into a charge period, a holding period and a discharge period in respective polar periods corresponding to the 1st to 3rd levels of the plural gate pulse voltage; and converging pixel voltage of the discharge period to a common voltage level, wherein the 3rd level exists in a range between the 1st level and the 2nd level.

Abstract: Disclosed is a method for driving a liquid crystal display, in which the response speed of a liquid crystal is improved by the change of gate pulse voltage. The method comprises the steps of: sequentially generating a plurality of gate pulse voltages having 1st to 3rd levels while being synchronized with vertical clock signal in said 1 vertical period; in invert driving, dividing the generating period of the plural gate pulse voltages into a charge period, a holding period and a discharge period in respective polar periods corresponding to the 1st to 3rd levels of the plural gate pulse voltage; and converging pixel voltage of the discharge period to a common voltage level, wherein the 3rd level exists in a range between the 1st level and the 2nd level.