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Molecular Monolayer Nonvolatile Memory with Tunable Molecules
Lee, Junghyun,Chang, Hojong,Kim, Sangkwan,Bang, Gyeong Sook,Lee, Hyoyoung WILEY-VCH Verlag 2009 Angewandte Chemie Vol.48 No.45
<B>Graphic Abstract</B> <P>An unforgettable monolayer: Dialkylthiolate-tethered metal complex self-assembled monolayers (see picture; thickness 3 nm) provide stable and reproducible molecular monolayer nonvolatile memory (MMNVM) characterized by its hysteretic current–voltage (I–V) properties and retention time for write–multiple read–erase–multiple read pulse cycles. This is the first known voltage-driven MMNVM using only a molecular monolayer. <img src='wiley_img/14337851-2009-48-45-ANIE200902990-content.gif' alt='wiley_img/14337851-2009-48-45-ANIE200902990-content'> </P>
GOTHIC-3D APPLICABILITY TO HYDROGEN COMBUSTION ANALYSIS
LEE JUNG-JAE,LEE JIN-YONG,PARK GOON-CHERL,LEE BYUNG-CHUL,YOO HOJONG,KIM HYEONG-TAEK,OH SEUNG-JONG Korean Nuclear Society 2005 Nuclear Engineering and Technology Vol.37 No.3
Severe accidents in nuclear power plants can cause hydrogen-generating chemical reactions, which create the danger of hydrogen combustion and thus threaten containment integrity. For containment analyses, a three-dimensional mechanistic code, GOTHIC-3D has been applied near source compartments to predict whether or not highly reactive gas mixtures can form during an accident with the hydrogen mitigation system working. To assess the code applicability to hydrogen combustion analysis, this paper presents the numerical calculation results of GOTHIC-3D for various hydrogen combustion experiments, including FLAME, LSVCTF, and SNU-2D. In this study, a technical base for the modeling oflarge- and small-scale facilities was introduced through sensitivity studies on cell size and bum modeling parameters. Use of a turbulent bum option of the eddy dissipation concept enabled scale-free applications. Lowering the bum parameter values for the flame thickness and the bum temperature limit resulted in a larger flame velocity. When applied to hydrogen combustion analysis, this study revealed that the GOTHIC-3D code is generally able to predict the combustion phenomena with its default bum modeling parameters for large-scale facilities. However, the code needs further modifications of its bum modeling parameters to be applied to either small-scale facilities or extremely fast transients.
생활환경 맞춤형 건강증진·추적관리 스마트 헬스 시스템을 활용한 1인가구 건강 모니터링 구축에 관한 연구
장호종(Hojong Chang),김영이(Youngyi Kim),이우근(Woo-geun Lee),이채석(Chae-Seok Lee),이지혜(Ji Hye Lee),한병훈(Byunghun Han),김아령(A-Ryoung Kim),송은채(Eunchae Song),남승범(Seung Bum Nam) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.6
Since COVID-19, it has become necessary to establish a health care system for health promotion and tracking management as a government response to the medically vulnerable class (single-person households, etc.). In the global healthcare market, not only traditional medical companies but also IT companies such as Apple and Amazon are leading the market, and countermeasures are needed. In this paper, we discuss the establishment of single-person household health monitoring using a smart health system for health promotion and tracking management tailored to the living environment.
이경수(KyeongSoo Lee),이호종(HoJong Lee),김성호(SeongHo Kim) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
차량의 제동성능은 타이어 및 차량 특성뿐만 아니라 ABS 구동 알고리즘에도 영향을 받는다. 본 연구에서는 이러한 특성을 시험을 통해 얻었으며, 이를 고려한 차량 시뮬레이션을 통해 차량의 제동거리를 예측 하였다. 각 6종의 차량과 타이어에 대해 상용 해석 툴에서 제공된 기본 ABS 알고리즘을 사용하여 예측된 제동거리는 실제 계측된 제동거리를 잘 대변하지 못하였으나, 차량 별 제동 중 ABS 특성을 계측하여 차량 시뮬레이션에 반영한 결과 실제 제동거리와 상관성이 높았다. 타이어 및 차량뿐만 아니라 ABS 구동 특성을 고려한 차량 시뮬레이션의 유용성이 입증되었다. 본 연구에서 제시한 차량 시뮬레이션 방법은 ABS 특성을 고려한 타이어 제동 성능 개선 활동에 유용하게 이용될 수 있을 것으로 기대된다