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Jongseong, Kim,Shanmugasundaram, Kanagaraj,Chitumalla, Ramesh Kumar,Jang, Joonkyung,Choe, Youngson Elsevier 2018 Journal of luminescence Vol.197 No.-
<P><B>Abstract</B></P> <P>A new phenothiazine derivatives of an ionic small molecules were synthesized and its photo- and electrochemical properties were evaluated. The compounds NPzN and PPzP exhibits good thermal stabilities and shows positive solvatochromism upon increasing the polarity of the solvents. The single-component electroluminescence devices were fabricated from solution by incorporating both the emitters. Light-emitting electrochemical cell devices exhibited green color electroluminescence for both the compounds with the CIE coordinates of (0.28, 0.43) and (0.32, 0.41). These results indicate that phenothiazine derivatives have a promising prospect in the application of solution processed green LECs.</P> <P><B>Graphical abstract</B></P> <P>Light-emitting electrochemical cells based phenothiazine derivatives were fabricated. Devices exhibited green electroluminescence.</P> <P>[DISPLAY OMISSION]</P>
The Embodiment of Real Life Picture Library of 3D Oriental Painting with Time-Lapse Photographing
Jongseong Kim,Jongchan Kim,CheeYong Kim,Eungkon Kim 한국멀티미디어학회 2008 한국멀티미디어학회 국제학술대회 Vol.2008 No.-
Time-Lapse photography refers to taking pictures of changes of an object or nature that take place for an extended duration based on a standard time interval. Since the images have the advantage of showing in compressed time and rapidly the changes that have taken place over an extended course of time, they are widely utilized in documentaries, advertisements, movies, etc. Especially, time-lapse photography in reference to natural changes is widely used in the field of science education. The presented study provides time-lapse photography of the blooming process of flowers from among the many changes observable in nature by treating the background and controls the value of the key in order to be able to delete the background. Because the images of real life picture of flowers which have a deleted background can be freely synthesized not only in a 2D space but also in a 3D space, it is possible to realize a 3D real life picture library of flowers, which constitutes one of the components of oriental painting.
High Dynamic Range Image Reconstruction using Multiple Images
Jongseong Choi,Young-seok Han,Moon Gi Kang 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
The dynamic range of image sensors is limited due to the capacitance of photodiode and the nonlinearity of the system response function. In this paper, the high dynamic range image reconstruction algorithm using multiple images is proposed. The proposed algorithm simultaneously enhances dynamic range and estimates the imaging system’s response function. The image acquisition process including limited dynamic range is modelled. With the observation model, the linear least squares estimates the response function of the imaging system as well as the single high dynamic range image are obtained.
Heat Pipe와 Fin을 활용한 2차 전지 Sealing Bar Unit 냉각성능 평가
윤종성(Jongseong Yun),우용건(Y. Woo),윤정상(J.Yun),서동섭(D. Seo),민경민(K. Min),박준용(J. Park),윤린(R. Yun) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
The study was done to decrease and to evenly disperse the heat transfer rate from the pouch-sealing unit to the cylinder part of the apparatus of manufacturing the battery for the electric vehicle. The pouch-sealing unit is made of the heating block having a cartridge heater, and the cylinder part is designed for moving the pouch-sealing unit. The heat transfer from the pouch-sealing unit to the cylinder deteriorate the performance of the cylinder working. The two different heat sinks made of aluminum fin, heat pipes, and the combination of heat sink and heat pipe were designed and tested for efficient cooling for the heating block. When the heat sink was applied to the system the temperatures of the heating block was lower by 21%, and for the combination of heat sink and heat pies the temperature decreased to 33%.