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김영오,유형렬,이재형,기노석,황인담,Kim, Young-Oh,Yoo, Hyung-Yul,Lee, Jae-Hyung,Ki, No-Suk,Hwang, In-Dam 대한예방의학회 1988 Journal of Preventive Medicine and Public Health Vol.21 No.2
This study was carried out to investigate the heavy metal contents and their correlationship between paddy soil and brown rice near the Kum-River area. In this study, eighty soil samples and forty brown rice samples were taken from the paddy soil. The contents of heavy metals were measured by flame atomic absorption spectrophotometry. The results were as follows: 1. The average contents of soluble heavy metals in surface soil were Cd 0.19, Cu 15.31, Zn 18.10 and Pb 9.08 ppm. The average contents of soluble heavy metals in subsurface soil were Cd 0.19, Cu 14.52, Zn 17.75 and Pb 8.11 ppm. There was no statistically significant difference between the two layers. 2. The contens of Cu, Zn and Pb of Taejeon(S6) and Cd of Sinbyung(S5) in surface soil were higher than those of other areas. The contents of Cd and Cu of Taejeon(S6) and Zn and Pb of Kumnam(S3) in brown rice were higher than those of other areas and four heavy metals in soil and brown rice of Simchon(S7) were lower than those of other areas. 3. The ratio of soluble contents(Cd:Cu:Zn:Pb) in surface soil was 1:79:93:47, that of soluble contents in subsurface soil was 1:76:94:43, and that of total contents in brown rice was 1:84:294:12. 4. The correlationship of the content between soluble heavy metals in surface(0-15 cm depth) soil total heavy metals in brown rice was found to be order of Cd>Cu>Zn>Pb. The correlationship of the content between soluble heavy metals in subsurface(20-30 cm depth) soil and total heavy metals in brownricewasfoundtobeorderofcu>Cd>Zn>Pb.
김영오,양홍서,Kim Young-Oh,Yang Hong-So 대한치과보철학회 2004 대한치과보철학회지 Vol.42 No.2
Statement of problem: Major objective in making on implant-supported prosthesis is the production of superstructure that exhibits a passive fit when connected to multiple abutments. One requirement to ensure passive fit is to make an accurate impression. Purpose : The purpose of this study was to compare the accuracy of master cast fabricated by using different impression methods at the different impression levels. Material and method: The master model used in this study was resin block having low implant analogs. Impression method studied were 1) direct method on fxiture level (Group FIX-D), 2) indirect method on fixture level(Group FIX-I), 3) modified indirect method on fixture level(Group FIX-M), 4) direct method on abutment level(Group AB-D) and 5) indirect method on abutment level(Group AB-I). Each of the five groups took 10 impressions. Fifty impressions were made for master cast by using Impregum $F^{(R)}$ impression material loaded on individual tray. Three dimensional measuring microscope was used to measure the inter-implant distance. Error rate of each inter-implant distance were calculated and evaluated. Results : The results were as follows. 1. Group FIX exhibited higher accuracy than group AB. 2. In group FIX, modified indirect method showed the highest accuracy, while indirect method showed the lowest accuracy. In group Ab, indirect method showed the higher accuracy than direct method. 3. Group FIX showed larger horizontal error than group AB. But, group AB showed the larger vertical error than group FIX. 4. Group Fix-M showed smallest vertical and horizontal error. Conclusion: An impression method have more effect on accuracy of master model than an impression level. A modified indirect method showed smallest vertical and horizontal error.
김영오,양홍서,방몽숙,박상원,박하옥,이재봉,Kim Young-Oh,Yang Hong-So,Vang Mong-Sook,Park Sang-Won,Park Ha-Ok,Lee Jai-Bong 대한치과보철학회 2006 대한치과보철학회지 Vol.44 No.1
Purpose: The purpose of this study was to compare the accuracy of master cast fabricated by using different impression methods at the different impression levels. Material and Method: The master model used in this study was resin block having low implant analogs. Impression method studied were 1) direct method on future level (Group FIX-D), 2) Indirect method on fixture level(Group FIX-I), 3) Modified indirect method on fixture level(Group FD(-M), 4) Direct method on abutment level(Group AB-D) and 5) Indirect method on abutment level(Group AB-I). Each of the five groups took 10 impressions. Fifty impressions were made for master cast by using Impregum $F^(R)$ impression material loaded on individual tray. Three dimensional measuring microscope was used to measure the inter-implant distance. Error rate of each inter-implant distance were calculated and evaluated. Results: The results were as follows. 1. Group FIX exhibited higher accuracy than group AB. 2 In group FIX, modified indirect method showed the highest accuracy, while indirect method showed the lowest accuracy. In group Ab, indirect method showed the higher accuracy than direct method. 3. Group FIX showed larger horizontal error than group AB. But, group AB showed the larger vertical error than group FIX. 4. Group Fix-M showed smallest vertical and horizontal error.
DACUM 직무분석을 이용한 산학일체 교육과정개발 -마이크로컴퓨터 제어 직무를 중심으로-
김영오,김병래,이응구,조병섭,Kim, Young-Oo,Kim, Hyeong-Rae,Lee, Eung-Gu,Cho, Byung-Seob 대한전자공학회 2000 電子工學會論文誌 IE (Industry electronics) Vol.37 No.4
직무분석을 도입하여 대학의 교육과정을 구축하는 모델을 제시하고, 실제 적용한 결과를 예시하였다. 산업현장의 요구사항을 충실히 교육과정으로 구축하기 위하여 DACUM을 도입하였으며, 이를 이용하여 교육과정을 설계한 결과 기존의 교육과정에 비해 현장 중심적인 교과목이 신설되거나, 실무적인 내용이 많이 추가됨을 확인하였다. A curriculum-building model is presented to achieve a work based curriculum development. It includes a job analysis method called DACUM(Developing A Curriculum) which is designed to accept various requirements of industrial fields fast and faithfully. The model is applied to design our curriculum. By analysis, it is shown that the new curriculum includes some new practical classes, and/or that new practical contents are included even in old classes.