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보리새우, Penaeus Japonicus 의 중장에서 일어나는 Glycine의 흡수과정에 관한 연구
宋容圭,李錦洙 충남대학교 자연과학연구소 1981 忠南科學硏究誌 Vol.8 No.1
Glycine transport mechanism through muscosal and serosal border of marine shrimp (P. Japonicus) midgut has been investigated. The transmural fluxes of glycine across the midgut wall were also examined. 1. Mucosal glycine influx process is composed of the active transport process with Na^+ requirement and the passive diffusion process. 2. Mucosal glycine uptake of midgut tissue in Na^+-free saline was significantly decreased as compared to that in normal saline. This result supports the idea of the co-transport mechanism of glycine with Na^+ on the mucosal border of the colummar epithelium. 3. L-alanine appeared to be a competitive inhibitor of mucosal glycine entry process. 4. Glycine accumulation process was significantly decreased by adding 1 mM IAA into the medium, suggesting that the most of glycine active uptake process was energy-dependent. 5. A tentative model of glycine transport in P.japonicus midgut is proposed.
宋龍奎 한국 항공대학교 항공산업기술연구소 1993 航空宇宙産業技術硏究所 硏究誌 Vol.3 No.-
본 연구에서는 확대 칼만필터가 이산 비선형 시스템을 위한 관측기로 쓰일때의 수렴조건들을 고려한다. 오차공분산이 일정 한계값을 갖기위한 조건들이 비선형 시스템의 가관측성에 연계됨을 보인다. 그리하여 비선형 시스템이 가관측성 랭크조건을 만족시키고 상태변수들이 어떤 convex compact 공간내에 있을 때는 항상 관측오차가 일정하게 점근적으로 수렴됨을 보인다. 이 결과는 확대 칼만필터의 이론적 기초를 제시한다. The convergence aspects of the extended Kalman filter, when used as a deterministic observer for a nonlinear discrete-time system, are analyzed. The conditions needed to ensure the uniform boundedness of the error covariances are related to the observability properties of the underlying nonlinear system. Furthermore, the uniform asymptotic convergence of the observation error is established whenever the nonlinear system satisfies an observability rank condition and the states stay within a convex compact domain. This last result provides a theoretical foundation for this classic, approximate nonlinear filter.