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김창기,이찬용,신연승,Kim, C.K.,Lee, C.Y.,Shin, Y.S. 한국전자통신연구원 2003 전자통신동향분석 Vol.18 No.5
본 논문은 SDR Forum에서 SDR용 모바일 플랫폼 구성을 위한 소프트웨어의 표준으로 인정된 차세대 개방형 소프트웨어 프레임워크인 SCA의 구조에 대해 기술한다. SCA 소프트웨어 프레임워크는 궁극적으로 단일 모바일 플랫폼 환경에서 하드웨어의 변경 없이 무선으로 다운로드한 소프트웨어의 동작으로 다양한 무선 접속환경을 구성할 수 있도록 하는 내장형 시스템 소프트웨어들의 표준을 추구한다. SCA는 분산 객체 모델의 표준인 CORBA Middleware와 더불어 다중 무선접속 응용프로그램을 구성하기 위하여 컴포넌트 구성물의 수행을 뒷받침하는 개방형 소프트웨어 구조로서 크게 RTOS, CORBA Middleware, CF, Portable Software Resource로 이루어진다. 본 고에서는 SCA 소프트웨어 프레임워크의 기본 구조와 기능들을 최신 표준 동향을 기반으로 분석하고, 개발 사례에 대해서도 간단히 소개한다.
계(鷄)의 거세(去勢)에 관(關)한 연구(硏究) 제(第)1보(報) 부분거세(部分去勢) 및 Diethylstilbestrol이 계추(鷄雛)에 미치는 영향(影響)
김창기,Kim, Chang Ki 대한수의학회 1974 大韓獸醫學會誌 Vol.14 No.2
This experiment was carried out for 42 days to investigate the effect of caponizing and diethylstilbestrol (DES) on body weight gain, rate of feed conversion, weight of carcass and percentage of dressing in young chickens. The chickens used were 128 male Hamphorn of 30 days old. In the body weight gain of chickens, control group was higher than the other groups (P<0.01); $T_1$ group was the lowest group. Rate of feed conversion of control group was higher than $T_2$ and $T_3$ groups.
김창기,Kim, Chang-Gi 한국과학기술단체총연합회 1975 과학과 기술 Vol.8 No.3
SUMMERY 1. The length of trypanosoma can be shown 17-25μ on the korean dairy cattles. 2. Crjthida of trypanosoma was is found out in depresed Tabanid flies head and about 60% in Tabanid flies head. 3. Trypanosoma in the tryptose blood agar base was variated afrer about 6 weeks. 4. Infectional rate of trypanosoma is same tate about 52%. 5. Mild production in multltlic infected dairy cattles is delow thbn non inflected daily cattes. and fat rate is about 3.1% in Holstein. 6. Injected trypanosoma rate in summer is higher than in winter about 10%. 7. Calfs in winter wasnot infected for trypanosoma. 8. Erythrocyte number decrease and Leucocyte number increase in a lot of infected trypanosoma of dairy cattles. 9. There is degeneration is genital organs. endocrine gland.
김창기,KIM CHANG KY 대한수의사회 1963 대한수의사회지 Vol.7 No.1
The histological and cytological characteristics of pancreatic islets of chickens were studied along with the distribution and size of islets and weight of chicken pancreas versus body weight. The following is a summarg of the present work. 1. The weight
김창기,차상명,박희용,Kim, C.K.,Cha, S.M.,Pak, H.Y. 대한설비공학회 1992 설비공학 논문집 Vol.4 No.1
A numerical solution for heat transfer in the flue tube of a pulse combustion water heater was presented. The $k-{\varepsilon}$ turbulent model was adopted to describe turbulent characteristics and radiative heat transfer was calculated by P-N approximation. Three pulsating conditions equivalent to existing experimental studies were used for analysis. Pulsating pressure was specified at the inlet and outlet of flue tube and numerical procedure using control volume method and pressure boundary condition was presented. It was found that the present mathematical model and numerical method could predict effectively the flow field and heat transfer for the flue tube in pulse combustor.
유우(乳牛)의 Trypanosoma에 관(關)한 조사(調査)
김창기,Kim, Chang Ki 대한수의학회 1974 大韓獸醫學會誌 Vol.14 No.2
1. The length of Trypanossoma was $20{\sim}40{\mu}m$ (including flagellum) in dairy cattle in Korea, 2. Crithidia of Trypanosoma was found out in the head of depressed Tabanid fly and 77% in the flies. 3. The Trypanosoma in the tryptose blood agar was changed its form from 6 weeks after cultivation. 4. Infectious rate of Trypanosoma in dairy cattle was the same as in Korean cattle. 5. Infectious rate of Trypanosoma in dairy cattle was higher in summer than in winter. 6. No Trypanosoma was found in the blood from the jugular vein of calves born in winter. 7. Erythrocyte increased while leukocyte decreased in nummber in the blood of the cattle infected with Trypanosoma.
김창기,이창섭,이상호,Kim, Chang-Gi,Lee, Chang-Seop,Lee, Sang-Ho 대한소아치과학회 2002 大韓小兒齒科學會誌 Vol.29 No.4
The purpose of this study was to evaluate the diagnostic validity of an incipient occlusal caries using argon laser fluorescence. Extracted human premolars and molars with enamel carious lesion of occlusal surface were assessed using visual examination, visual examination with probing, argon laser fluorescence and histologic depth of carious lesion. The results in each of all the three detection methods were compared to the assessment of histologic depth of carious lesion using polarized microscope. The results from the present study can be summarized as follows; 1. There was highly correlation between the histologic depth of occlusal caries and all three detection methods(P<0.01). 2. The reproducibility(kappa value) of the visual examination, visual examination with probing and argon laser fluorescence between the histologic depth of occlusal caries was 0.189, 0.128, 0.472. The highest correlation was seen between detection of occlusal caries by argon laser fluorescence and histologic scores by polarized microscope. The results from this study indicated that argon laser fluorescence considered to be accurate and reliable method in detecting occlusal caries. 본 연구는 레이저 형광을 치아의 교합면에 적용하여 임상에서 초기 교합면 우식증의 감별에 레이저의 이용가능성을 평가하는데 그 목적이 있다. 아르곤 레이저 형광법의 교합면 우식증 탐지효과를 평가하기 위해 발거된 사람 치아 중에서 치아우식증을 제외한 결함이 없고 법랑질이 건강한 대구치와 소구치 50개를 선정하여 시진, 탐침을 이용한 시진, 아르곤 레이저 형광법을 이용해 관찰한 결과와 편광현미경으로 관찰한 병소의 깊이를 비교하여 다음과 같은 결론을 얻었다. 1. 교합면 우식의 조직학적 깊이와 아르곤 레이저 형광법에 의한 교합면 우식증 평가법과 시진, 탐침을 이용한 시진사이에서 모두 높은 상관 관계를 보였다. 2. 교합면 우식증의 조직학적 깊이와 각 검사법간의 일치도(kappa치)는 각각 시진이 0.189, 탐침을 이용한 시진이 0.128, 레이저 형광법이 0.472 이었으며, 레이저 형광법이 가장 일치도가 높았다. 이상의 결과를 종합해 보면 육안적 검사보다는 레이저 조사 후 관찰된 우식과 편광현미경상에서의 우식이 더 유의성 있는 관계를 보여 교합면 우식증탐지에의 레이저 형광법의 적용이 가능하리라 사료된다.