http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 金容哲 (검색결과 1,620 건)
- 무료
- 기관 내 무료
- 유료
-
주파수 가변 고속 디지털 MRI 모뎀 RF부 설계와 구현
김용철,박현대,김대진 전남대학교 전자통신기술연구소 2001 전자통신기술논문지 Vol.4 No.1
In this paper, we designed and made RF block of variable frequency digital modem for high speed MIRI system that can support not only multi-nuclei system but also any magnetic intensity(1.0T~3.0T). We executed simulation of fixed frequency digital modem using fixed band pass filter(BPF), variable frequency digital modem using variable band pass filter(tunable filter). Based on these simulations, variable band pass filter(tunable filter) named Micropole is ordered and manufactured. We designed and made RF block of variable frequency digital modem for high speed MRI system using variable band pass filter(tunable filter). And then we tested this board using PC and function generator and observed the output spectrum using spectrum analyzer. These spectrums are very clear and wide bandwidth about 500KHz and the level of main spectrum is 60~70dB more than harmonics or spurious. This difference of level is available for MRI system.
-
-
김용철 용인대학교 산업경영연구소 2003 산업경영논총 Vol.9 No.-
Under certain assumption we know that the prospect facing a person has a numerical value called utility, and that we make those decisions for which ours prospects would have as large a utility as possible. Generally speaking, this is easier said than done, but, in many applications, certain simple properties of utility make it feasible for one to make intelligent decisions. The purpose of this paper is introduced to the use for the utility function in multi-attribution utility theory. The utility function is extended by the various probability of success for a interested data. We discussed the generalized utility function with a attribution of data.
-
-
김용철,최인수 한국생명과학회 2002 생명과학회지 Vol.12 No.5
대두의 질소고정 근류균들 중 우리나라 토착균, USDA110, USDA122, RJl-29, R2l4 등으로 종자분의접종한 삼남콩을 폿트에 재배하여 개화기에 한발처리한 것과 관행으로 폿트에 재배한 것과의 근류균별 질소고정력 조사와 콩의 제요인에 미치는 근류균의 영향, 한발조건시 근류균 질소고정력과 협중과의 상관관계, 식물체 호흡량과 엽면적과의 상관관계 등을 시험한 결과를 요약하면 다음과 같다. 관행재배에서는 근류균의 질소고정력이 R2l4와 토착균이 높게 나타났으나, 개화기에 한발처리를 한 구에서는 토착근류균 보다 R2l4와 Rll-29의 균들이 질소고정력을 높게 나타내었다. 토착근류균에 비하여 USDA122와 RJl-29의 근류균을 접종한 구가 한발조건에서 식물체 호흡량을 적게 유지하여 엽면적 및 협중의 상대지수를 높게 나타내었다. 한발조건에서 근류균 질소고정력과 협중 상대지수와의 상관관계는 r=0.85'로서 유의적인 정의 상관관계를 나타내었다. 한발조건에서 식물체 호흡량과 엽면적 상대지수와의 상관관계는 r=-0.89'로서 유의적인 부의 상관관계를 나타내었다. The object of this study was to investigate nitrogen fixation activity of rhizobium inoculated at seed coat when drought condition was applied in flowering period of soybean c.v. Samnamkong. The rhizobia used in this experiment were indigenous rhizobium, R2l4, RJl-29, USDA110 and USDA122. The experiment was done with 1/2000 Wagner pots in laboratory and greenhouse and was tested in completely randomized design with four replications. Nitrogen fixation activity in coventional culture was the highest in R2l4 and indigenous rhizobium among the five rhizobia strains. As given drought condition from flowering to maturity, nitrogen fixation activity was higher in R2l4 and RJl-29 than indigenous rhizobium. Leaf area and relative index (drought/convention) of pod weight were higher in USDA122, RJl-29 and R2l4 than indigenous rhizobium as given drought condition from flowering to maturity. High positive correlation was observed between nitrogen fixation activity of rhizobium and relative index(drought/convention) of pod weight. High negative correlation was observed between respiration of plant and relative index (drought/convention) of leaf area.
-
-
김용철 서강정보대학 2002 論文集 Vol.21 No.-
As the Japanese Imperialism forcefully occupied Korean Peninsular step by step, the Japanese merchants who had encroached Korean Market since the "Opening of Market(a port)" (開港) became the dominant power in it. Most Korean merchants run the small retail trade at Jangsi(場市) - a conventional type of market which was regularly open across the whole nation - under the control of the Japanese commercial capitals. It was at Conventional market(Jaerae Sijang, 在來市場) that korean merchants mainly run their business and most of koreans engaged their economic life in terms of circulation of commodities. Even though the importance of Conventional market in field of the total circulation of commodities was gradually lessened, it played an influential role all the while in colonized Korean economy as one of the most essential and popular commercial systems. In 1920, "Market Research" was executed as one of the basic enterprises of the Japanese Imperialism for smooth colonization of Korea. What they wanted to achieve through that enterprise was that they accumulate their knowledges about how it was current circumstances of circulation of commodities which settled long before colonization of Korea and how much Japanese commodities spread out in Korea, so that they prepared for the effective market regulator as a part of schemes of colonization of Korea. The Decree for Regulation Market set forth in 1914 was essentially aimed at compelling all markets to be under public authorities' control and licence system(socalled "public management system"). If we compare this decree with the market control policies carried out in Japan in those times, we could find that the Japanese Imperialism intended to readily reconstitute and dominate Korean conventional market through these steps. The Marketplace along the Yeongsan River was established at 45 place in 1938. In those days the Marketplace along the Yeongsan River was traded the rice, raw cotton, raising silkworms-cocoon, ginseng, cottonseed oil, bamboo goods, paper products, pottery, sweet potato, kind of fruits(e.g. pear, apple, persimmon), etc.
-
-
김용철 龍仁大學校 2004 용인대학교 논문집 Vol.22 No.-
In preference type problems for survey data, we require a estimate for the preference corresponding to a project. According to the assumption of the conjoint model with the preference relation and the value of utility. We have several methods to get the preference value of the survey data. We would like to demonstrate the difference between the utility function in multi-attribution utility theory and the conjoint model with the preference value based on attribution utility. In the degree of preference, we often used the multiple regression method with the quantitatively scaled value for independent variables. But independent variables in the conjoint model are the qualitatively scaled value. This paper propose the method for conjoint model for the preference value and discuss the utility value for the survey data.
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
