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Glassy Effects for General Images
Gwanggil Jeon,Seokhoon Kang 보안공학연구지원센터 2015 International Journal of Multimedia and Ubiquitous Vol.10 No.8
This paper proposes a new grassy effect generation method. The grassy effect changes original image as the one behind the grass. Random number generation function is used to decide block size and the pixel location. Various block size and pixel location give unexpected grassy effect to the original image. Objective and visual performance comparison reveals that the proposed method successfully generates glassy effected images.
정동원 ( Dongwon Jeong ),이석훈 ( Seokhoon Lee ),정현준 ( Hyunjun Jung ),전근환 ( Keun-hwan Jeon ),온병원 ( Byung-won On ),김영갑 ( Young-gab Kim ) 한국정보처리학회 2016 한국정보처리학회 학술대회논문집 Vol.23 No.2
빅데이터 분야에 대한 다양한 연구가 활발하게 진행됨에 따라 표준화에 대한 요구가 증가하고 있다. 이러한 요구를 충족하기 위해 최근 ISO/IEC JTC 1 산하 표준화 위원회를 중심으로 빅데이터 표준화에 대한 연구가 활발하게 진행되고 있다. 그러나 아직까지 구체적인 기술 측면에서의 표준화는 미비한 상황이다. 이 논문에서는 기존 표준화 연구 내용을 간략하게 조망하고 빅데이터 센싱 객체 관리 측면에서의 표준화 방안에 대하여 논의한다. 이 논문은 향후 빅데이터 분야, 특히 빅데이터를 생성하는 센싱객체의 규범적인 관리를 위한 표준 개발에 기여할 것으로 기대된다.
Nguyen, Thang Phan,Choi, Seokhoon,Jeon, Jong-Myeong,Kwon, Ki Chang,Jang, Ho Won,Kim, Soo Young American Chemical Society 2016 The Journal of Physical Chemistry Part C Vol.120 No.7
<P>Two-dimensional transition metal disulfide (TMD) nanosheets, including MoS2, WS2, TaS2, and TiS2, were used to catalyze the hydrogen evolution reaction (HER). The TMDs were exfoliated by sonication to generate nanosheet layers that were approximately a few hundred milometers in size. X-ray diffraction and transmission electron microscope data indicated that the major plane of the exfoliated nanosheets was the (002) plane and that the hexagonal structure is maintained after exfoliation with lattice constants of 0.32 nm for MoS2 and WS2 and 0.34 nm for TaS2 and TiS2. Exfoliated MoS2, WS2, TaS2, and TiS2 loaded on Au electrodes exhibited good electrocatalytic activity with low onset potentials of similar to 100, 150, 175, and 135 mV, respectively, at a current density of -1 mA/cm(2). MoS2 and TiS2 exhibited the best HER performance with Tafel slopes of 94.91 and 91 mV/decade. These results indicated that TMD nanosheets have potential applications as HER catalysts for the mass production of hydrogen.</P>