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RISS 인기검색어
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- 저자 : 김한경 (검색결과 226 건)
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김한경 한국통신학회 2001 한국통신학회논문지 Vol.26 No.12
Colored thread algorithm suggested by Ohba is understood to be effective to prevent from establishing path in loop. 3 kinds of thread state, such as null, colored, transparent, defined in colored thread algorithm which makes difficult and complex to design actions of the thread events, is reconfigured and improved to a 4 states to make the finite state machines simple. The original colored thread algorithm fonds loops by receiving thread of a same color that was generated by the initiator itself and confirms the loops by hop count of unknown thread traversed again along the looped path. This method is modified as to use the same color instead of generating new colored thread for the looped path, leading to save the traversing time. And also redefined the events to make easy coupling with existing protocols.
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자낭균 곰보(Morchella esculenta)버섯의 인공재배에 관한 연구
김한경,이강효,정종천,전창성,석순자,장갑열 한국버섯학회 2009 한국버섯학회지 Vol.7 No.1
This study was executed in an attempt to investigate a artificial requisites of fruitbody occurrence. Environmental requirements on habitat for fruitbody occurrence of collected cultures resulted in leading to 13- 16℃ and 75% relative humidity, and requiring silt loam of soil texture which had more nutritional substances than a dry field. Optimal temperature was 25℃, medium PDB, and pH 5.0 in cultural conditions. Mannose required of 5% in ASI 59002, 59003, 59004, but 3% in ASI 59001 was selected as optimum carbon source. The substrates stimulating sclerotium formation were cotton waste, or cotton waste + oak sawdust (mixture ratio of 8:2), which had 20% additive of wheat barn respectively. Sclerotium was formed well in the substrate adjusted chemical properties by applying 2% of calcium sulfate. Sclerotium formation was the most effective in the treatment of peat moss + oak sawdust (mixture ratio of 5:5) + 30% of wheat barn.
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온도의 영향성을 고려한 리튬폴리머 전지의 절대용량 추정 방법
김한경,곽기호,Kim, Hankyong,Kwak, Kiho 한국군사과학기술학회 2016 한국군사과학기술학회지 Vol.19 No.1
Military devices and systems powered by batteries need to operate at extreme temperature and estimate the available capacity of the battery at different temperature conditions. However, accurate estimation of battery capacity is challenging due to the temperature-sensitive nature of electrochemical energy storage. In this paper, Peukert's equation with temperature factor is derived, and methods for estimating the absolute capacity of lithium-polymer battery and the state-of-charge(SOC) with respect to varying currents and temperatures are presented. The proposed estimation method is experimentally verified under three different discharge currents(0.5 A, 1 A, 3 A) and six different temperatures ranging from -30 to 45 deg. C. The results show the proposed method reduces the Peukert's estimation error by up to 30 % under or at extreme condition.
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