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洪慶和,朴鍾烈 弘益大學校 1983 弘大論叢 Vol.15 No.2
Recently J. Luh, W.E. Coppage and Shoji Kyuno studied the structure of Γ-ring and obtained various generalizations analogous corresponding parts in ring theory. The object of this paper is to study the radical properties of Γ-rings. The main result is the following theorem. If M is a Γ-ring with the operator domain øand R is a radical property then the R-radical of M considered as a Γ-ring with operator domain exists and this R-radical coincides with the R-radical of the ring considered without operator domain.
정경택,설용건 연세대학교 산업기술연구소 1994 논문집 Vol.26 No.2
Synthesis of potassium titanate powders and fibers have been studied according to various synthetic method-melting method, rapid cooling method and flux method. Potassium hexa titanate was synthesiezed over the temperature range 950-1050℃, within 10hrs. Potassium tetra titanate was synthesiezed at 900℃ for 72hrs, by melting method. In rapid cooling method, potassium hexa titanate was grown with the dimension of 0.01mm(diameter) X 1mm(length). The potassium hexa titanate fibers with the maximum size of 0.05mm(diameter) X 4mm(length) was grown in case of flux method. Recooling method and seed method by using potassium hexa titanate as seed produced more and longer size of fibers than the case of slow cooling method.
진세노사이드 Rd와 사포닌 대사물인 compound K의 항지질과산화 효과
김경현,성금수,문연자,박시준,신미란,장재철 한국전통의학연구소 2006 한국전통의학지 Vol.15 No.1
To study on antioxidant effects in the liver of 40-week-old mouse, the sample were orally pretreated 5mg/kg/day for 5 days with red ginseng saponin components(total saponin, protopanaxadiol saponin, protopanaxatriol saponin, ginsenoside-Rd, ginsenoside-Re, compound-K) for 5 days. The ability of saponin to protect the mouse liver from oxidative damage was examined by determining the activity of superoxide dismutase(SOD), glutathione peroxidase(GPx) and the contents of glutathione, the level of malondialdehyde. The only protopanaxadiol among the ginseng saponin fractions was significantly increased the hepatic SOD activity(p<0.01). The red ginseng saponin induced a slight increase of GPx activity, especially ginsenoside Rd, compound K and protopanaxatriol treatments significantly increased its activity. The content of glutathione was significantly increased by total saponin, protopanaxadiol and ginsenoside Rd(p<0.01), but the oxidized glutathione level was lowered in all the red ginseng saponin. Finally, the level of malondialdehyde was significantly decreased by ginsenoside Rd and protopanaxadiol. In conclusion, protopanaxadiol and ginsenoside Rd among the saponin fraction were especially increased in the activity of hepatic antioxidative enzyme and decreased the lipid peroxidation that was expressed in term of MDA formation. This comprehensive antioxidant effects of red ginseng saponin seems to be by a certain action of saponin other than a direct antioxidant action.
지경환,김성태,양정진 가톨릭대학교 자연과학연구소 2005 자연과학논문집 Vol.26 No.-
유비쿼터스 시대의 컴퓨팅은 사용자의 의향과 상황을 인지해 동적으로 목표를 설정하고 자동으로 협력해 목표를 달성하게 된다. 앞으로 곧 다가올 새로운 컴퓨팅 환경에서 주된 역할을 하게 될 개체인 에이전트와 이들이 상호 협력하는 기반구조인 다중 에이전트 시스템에 관하여 활발히 연구가 진행 중이다. 본 연구는 uT 컴퓨팅 환경에서 응용될 수 있는 에이전트 시스템의 적용 사례들을 분석하고 기존 연구의 방향, 목적, 장단점을 파악하여 앞으로의 에이전트 연구에 도움이 될 수 있는 기술적 근거를 조사하고 uT 컴퓨팅 환경에서 다중 에이전트 시스템 설계를 위한 방법론을 모색한다. Computing in ubiquitous era introduces that a goal is dynamically set by recognizing user's intention and situational information and that the goal is achieved better through collaborative wok by different components. Agents are the components that take critical roles in the new computing era, the study of multi-agent systems, that is, working through interaction and collaboration among agents is actively pursued along with the current demand. Our work focuses on the case studies of multi-agent system applications in ubiquitous computing environment. The study of the analysis enables us to extract rational direction of multi-agent system research in the future and the methodology of developing multi-agent system in ubiquitous computing environment.
한경숙 德成女子大學校 1997 德成女大論文集 Vol.28 No.-
Der Konflikt mit dem Leben, die innere Welt von der Hauptperson bei Kafka wird verschieden in jedem Werk beschrieben und dargestellt. In jedem Werk hat der Raum bei Kafka fast immer die untrennbare Verbindung mit dieser innern Welt von der Hauptperson. Solche Raume werden je nach Werk bald charakteristisch oder bald gemeinsam geschildert und verwendet. Kafka deutet seine Abicht und die Entwicklung des Wekes durch die Errichtung und die Orientierung des Raumes mittelbar an. Dazu verwendet er das gleiche. Motiv in einigen Werken, aber es das jedesmal anders dargestellt. Diese charakteristische Raumverwendung ist auch ein unverkennbares Zeichen, durch das sich Kafkas Wekf von anderen deutlich unterscheidet.