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나노 촉매 입자 구조 최적화를 위한 실시간 가상 환경 시뮬레이션
경우민(Woomin Kyoung),노승효(Seung Hyo Noh),David Glowacki 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
With recent development of ICT technology, a methodology for communicating creatively and innovatively beyond time and space limitation is being introduced. VR (Virtual Reality) or AR (Augmented Reality) are the most popular technologies among these methodologies, and are being applied very actively to promote the communication between engineers for the product design in conjunction with engineering solutions such as CAE and CAD. If material engineers could adopt this innovative communication method in their development process, it would be more useful compared to the product design area. Since it usually takes a very long time and lots of cost to discover new materials due to countless number of times trials and errors through experiments. In this research we developed new methodology to discover and optimize new materials like nano sized particle catalyst using VR technology. At first, the interactive simulation engine with molecular simulation potential was introduced to predict the energy and structures based on the DFT simulation. Next, the simulation process was installed in the VR environment to deal with catalyst model and simulation. As a result, material engineers who are not familiar with simulation were easily able to perform molecular simulation on the nano sized particle catalyst, and analyze the complex structure intuitively. Finally, we could develop small scale virtual smart laboratory for the nano catalyst synthesis. So, the developing a virtual smart laboratory based on this methodology will make innovative progress of new materials design and discovery in the next generation smart factory environment.
신규모델링 기법 제일원리전산을 이용한 고성능 에너지소재설계
한병찬 ( Byung Chan Han ),노승효 ( Seung Hyo Noh ),서준교 ( Joon Kyo Seo ),권인혜 ( In Hye Kwon ),서민호 ( Min Ho Seo ) 한국공업화학회 2012 공업화학전망 Vol.15 No.3
현대 컴퓨터산업의 진보는 제일원리 전산법이 여러 연구개발 분야에 널리 사용되는 길을 열었다. 이 논문에 서는 제일원리 전산법을 이용한 신 재생에너지의 고성능 나노 소재개발 및 디자인 연구사례를 통해 그 기초 원리와 다양한 응용분야 및 실험과의 효율적인 연계성 둥을 소개하고자 한다.
Trace-forward만을 사용한 Viterbi Decoder
노승효,오승훈,이찬호 崇實大學校 1999 論文集 Vol.29 No.1
Recently, the Viterbi algorithm is widely used for the decoding of convolutional codes. This paper proposes a Viterbi decoder using a trace-forward processing to reduce the amount of memory storing the survivor path information and to increase the decoding speed. We adopt fully parallel structure for ACS(add-compare-select) units to minimize the delay which determines the Viterbi decoder's throughput. We reuses ACS units to reduce ACS area that occupies the majority of the chip area. The decoder is designed using VHDL and is implemented using a CPLD. It is verified to operate by a measurement using a logic analyzer.