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GPU을 이용한 토사재해 예측 시뮬레이션의 3D 실시간 가시화 방법
송상민,조광준,옥수열,Song, Sang-Min,Cho, Kwang-Joon,Ok, Soo-yol 한국정보통신학회 2015 한국정보통신학회논문지 Vol.19 No.7
본 논문은 SPH에 의한 토사 유체 유동 시뮬레이션 결과를 GPU 병렬처리를 통해 사실적이고 인터랙티브가 가능한 실시간 가시화 방법을 제안한다. 특히, 본 논문에서는 스크린 공간 메쉬기법의 GPU 가속화를 통해 토사 재해 시뮬레이션에 적용 가능한 가시화 방법을 실험을 통해 검증하고 그 타당성을 논하고자 한다. 본 논문의 기법은 시행착오를 통해 축적된 경험에 근거하여 예측하던 기본 방식의 한계를 극복할 수 있게 한다. 실시간 시뮬레이션을 통해 상호작용적 방식으로 모델을 관찰할 수 있게 하며, 효율적인 데이터 동화(Data Assimilation)를 가능하게 하여 시뮬레이션의 정확도를 효율적인 방법으로 대폭 개선할 수 있을 것이다. In this paper, we propose a GPU-based interactive and plausible visualization method for the silt and landslide simulation results computed with SPH. By empirical experiments, we verify that our GPU-accelerated screen space mesh method can be effectively used for visualizing the landslide disaster simulation. The method proposed in this paper make it possible to overcome the limitation of previous simulations where the experience obtained by trials and errors plays the most important roles. Because the realtime visualization enables interactive observation of simulation results and efficient data assimilation, the accuracy of the simulation can be significantly improved in an efficient way.
고객 성격행동에 따른 지각된 품질에 관한 연구 : 이동통신을 중심으로
송상민,조재립 경희대학교 공학연구소 2009 레이저공학 Vol.20 No.-
Today, there is the rapid growth in the Korean mobile telecommunications service market. But mobile telecommunications service companies don't pay full attention to customers' attitude and brand loyalty. This paper shows why Korean mobile telecommunications service companies have to focus on Brand Loyalty. This paper investigates the relationship among perceived quality, attitude and brand loyalty in the area of mobile telecommunications service.
송상민,김민재,김준규,박현태,박영훈,엄경식,박성윤 한국과학기술원 반도체설계교육센터 2022 IDEC Journal of Integrated Circuits and Systems Vol.8 No.2
This paper presents a digitally interfaced a 128-channel recording, 32-channel stimulation optogenetic neuromodulation system on chip (SoC) that has been developed for long-term optogenetics neuroscience research. The low-power 128-channel neural recording frontend offers low-noise multichannel recording, on-chip 16-bit data digitization, and electrode impedance measurement. The 32-channel optogenetic stimulator provides high-resolution, accurate optical stimulation. The chip communicates through two control signal shared SPI interfaces for simultaneous recording and stimulation with independent on-the-fly control command and data transfer, resulting in only 6 external wires. The developed system constitutes a fully digital, bidirectional 128/32-channel SoC suitable for in-vivo neuromodulation.
고소 작업용 섬유로프의 고정 매듭법에 따른 강도 변화의 해석 및 실험적 연구
송상민,김민섭,신대용,임사혁,권오헌,박우림,Song, S.M.,Kim, M.S.,Shin, D.Y.,Lim, S.H.,Kwon, O.H.,Park, W.R. 한국안전학회 2022 한국안전학회지 Vol.37 No.3
Workplace accidents are common while working at elevations. Thus, various safety measures such as safety handrails and horizontal safety nets are implemented to prevent falls. The minimum safety measure is the lifeline installation. However, because its standards have not been clearly established, it is often misused, resulting in inappropriate knot methods that increase the chance of accidents while working at elevations. Therefore, clarifying the appropriate usage methods or criteria for the various lifelines is required in the field. This study proposed an appropriate installation method by experimentally and numerically evaluating the change in strength according to the fixed knot lifeline method. In addition, three knot methods were specified for each material. The results obtained are expected to contribute to lessening falls through the establishment of lifeline installation standards and the development of appropriate parts.