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Goyang, South Korea

Korea Aerospace University ) is a private university, located in Goyang City, Gyeonggi-do, South Korea. Established in 1952 as a national university, it was taken over by Jungseok Foundation established by Hanjin Group and transferred to a private university. Korea Aerospace University is the one and only university in Korea specialized in aviation and aerospace where mostly fostering high skilled experts for its research institute, airlines, airports, government agencies, and other leading companies.The university, where encompasses most of the aerospace fields including Aerospace & Mechanical Engineering, Electronics • Telecommunication • Computer Engineering, Air Transportation and Logistics, and Aeronautical Science & Flight Operation, and Air and Space Law, has been designated to take several national undertakings and collaborative research projects with prominent global corporations including GE, Airbus, PLANSEE since 2009.Outstanding research results have been also observed in the realm of unmanned aerial vehicle, since the first autonomous formation flight of UAV and the first flight of solar powered UAV for 12 consecutive hours in Korea. ‘The 1st Hannuri’, the micro satellite, was developed and launched for the first time among the Korean universities in 2006. Wikipedia.


Do K.H.,Korea Institute of Machinery and Materials | Jang S.P.,Korea Aerospace University
International Journal of Heat and Mass Transfer | Year: 2010

In this paper, the effect of water-based Al2O3 nanofluids as working fluid on the thermal performance of a flat micro-heat pipe with a rectangular grooved wick is investigated. For the purpose, the axial variations of the wall temperature, the evaporation and condensation rates are considered by solving the one-dimensional conduction equation for the wall and the augmented Young-Laplace equation for the phase change process. In particular, the thermophysical properties of nanofluids as well as the surface characteristics formed by nanoparticles such as a thin porous coating are considered. From the comparison of the thermal performance using both DI water and nanofluids, it is found that the thin porous coating layer formed by nanoparticles suspended in nanofluids is a key effect of the heat transfer enhancement for the heat pipe using nanofluids. Also, the effects of the volume fraction and the size of nanoparticles on the thermal performance are studied. The results shows the feasibility of enhancing the thermal performance up to 100% although water-based Al2O3 nanofluids with the concentration less than 1.0% is used as working fluid. Finally, it is shown that the thermal resistance of the nanofluid heat pipe tends to decrease with increasing the nanoparticle size, which corresponds to the previous experimental results. © 2009 Elsevier Ltd. All rights reserved. Source


Patent
Korea Aerospace University, Electronics and Telecommunications Research Institute | Date: 2014-01-02

A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of content are provided. The metadata may include one or more BaseURL elements. Uniform Resource Locators (URLs) of segments forming media may be generated based on the BaseURL elements. Additionally, a URL of a segment may be generated by mapping a BaseURL element among the BaseURL elements to a sourceURL attribute of the segment. Segments indicated by generated URLs may be identical to each other.


Patent
Electronics, Telecommunications Research Institute and Korea Aerospace University | Date: 2014-04-08

A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of media content are provided. The media content may include a sequence of one or more periods. The metadata may include a start time attribute and/or a duration attribute of each of the periods. The metadata may determine a start time of each of the periods, and a start time of each of segments included in each of the periods. A terminal may access segments included in each of the periods, may decode and render data of media content included in the segments, and may play back the media content.


Patent
Electronics, Telecommunications Research Institute and Korea Aerospace University | Date: 2014-04-08

A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of media content are provided. The media content may include a sequence of one or more periods. The metadata may include a start time attribute and/or a duration attribute of each of the periods. The metadata may determine a start time of each of the periods, and a start time of each of segments included in each of the periods. A terminal may access segments included in each of the periods, may decode and render data of media content included in the segments, and may play back the media content.


Provided is an uplink feedback channel allocation method and apparatus used to feedback data to indicate whether data packets corresponding an enhanced physical downlink control channel (E-PDCCH) were successfully decoded. A terminal may use an additional resource area of an uplink feedback channel or may use an empty resource area of the uplink feedback channel to which feedback information of a data packet corresponding to a physical downlink control channel (PDCCH) is not allocated, to perform feedback.

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