Korea Institute of Science and Technology

Heon Phil Ha

Jae Wan Shim

Jongsik Kim

Jong Sik Kim

Kyung Ju Lee

Dong-Wook Kwon

Dong Wook Kwon

Young Joo Lotte Castle Ivy Apt 102-1807 43-4 Oh

Soon Hyo Chung

Disclosed are a method of transmitting image data having a hybrid resolution and a method of generating a hybrid-resolution image. A main region of an original image is transmitted as a high-resolution image and the remaining regions are transmitted as a low-resolution background image. Accordingly, an amount of data to be transmitted is able to be reduced.

Method of transmitting image data having hybrid resolution and method of generating hybrid-resolution image using the same

Provided is a catalyst for a Fenton system, and a method of preparing the same. The catalyst includes one or more species of d-orbital-based or non-d-orbital-based catalyst including NO/SO/HPO/HPO/POfunctional groups on the surface thereof. The method includes preparing a d-orbital-based or non-d-orbital-based transition metal oxide; and preparing a transition metal oxide catalyst comprising a NO, SO, HPO, HPO, or POfunctional group on the surface of the catalyst via nitrification, sulfation, or phosphorylation of the transition metal oxide.

Catalysts for Fenton system containing metal oxide containing functional group on surface and Fenton system using the same

A metal oxide catalyst synthesized using supercritical carbon dioxide extraction is provided, wherein the metal oxide catalyst includes an active site containing at least one type of metal oxide and a support for loading the active site and the metal oxide is an oxide of a metal selected from the group consisting of transition metals (atomic number 21 to 29, 39 to 47, 72 to 79, or 104 to 108), lanthanide (atomic number 57 to 71), post-transition metals (atomic number 13, 30 to 31, 48 to 50, 80 to 84, and 112), and metalloids (atomic number 14, 32 to 33, 51 to 52, and 85) in the periodic table, and a combination thereof.

Synthesis of metal oxide catalysts using supercritical carbon dioxide extraction

Provided are catalysts for reduction of nitrogen oxides including an active site including lanthanum vanadate represented by at least one of Formula 1 and Formula 2 and a support carrying the active site.LaVO(wherein LaVOis polymorphous and has a tetragonal or monoclinic crystal structure)&#x2003;&#x2003;Formula 1LaVO(wherein LaVOhas a monoclinic crystal structure)&#x2003;&#x2003;Formula 2.

Rare-earth metal vanadates catalysts for NOreduction at low temperatures

Provided are an apparatus and method for forgery prevention of digital information. The apparatus for forgery prevention of digital information includes: a digital information obtaining unit configured to obtain digital information in real time; a seed value generator configured to generate a seed value carrying characteristics of the digital information obtained using the digital information obtaining unit; an information piece generator configured to divide the digital information obtained using the digital information obtaining unit, into continuous information pieces with a sequence; and a hash value generator configured to generate a hash value of a first information piece from the seed value and the first information piece and generate a hash value of a subsequent information piece by using a hash value of a previous information piece and the subsequent information piece as inputs.

Apparatus and method for forgery prevention of digital information

Disclosed are an unmanned aerial vehicle (UAV) having a buoyancy apparatus and an attitude control method thereof, in which the buoyancy apparatus is coupled to the UAV to reduce the energy consumption of rotors such that the time of staying in the air is extended, enabling a long flight, and in which the buoyancy apparatus absorbs the impact energy and reduces the falling speed to thereby ensure sufficient safety for the UAV.

Unmanned aerial vehicle having buoyancy apparatus and attitude control method thereof

Provided is a nitrogen oxide (NO) reduction catalyst including an active site including at least one of a metal vanadate expressed by [Chemical Formula 1] and a metal vanadate expressed by [Chemical Formula 2], and a support for loading the active site thereon.(M)VO&#x2003;&#x2003;[Chemical Formula 1]

Nitrogen oxide reduction catalyst regenerable at low temperature

Provided is a catalyst including: a support including titanium oxide; an active catalyst component including vanadium oxide; and a co-catalyst including antimony and cerium, in which the catalyst is included in a deNox reduction reaction that decomposes nitrogen oxide. The catalyst may improve sulfur poisoning tolerance characteristics while improving the deNox efficiency at a temperature in a wide range from low temperature to high temperature.

Catalyst for decomposing nitrogen oxide and preparation method thereof

A sound source separating apparatus may include: a housing; a plurality of microphones positioned on the housing; a plurality of sound guides positioned on the housing to be adjacent to the plurality of microphones, and configured to guide sound to the plurality of microphones and to generate a difference between a plurality of sound information respectively arriving at the plurality of microphones according to a direction of a sound source; and a processor configured to separate the sound source according to the direction of the sound source based on the plurality of sound information received by the plurality of microphones.

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Seoul, South Korea

Heon Phil Ha