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- 저자 : 오우성(Woo-Sung Oh) (검색결과 54 건)
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팽이버섯(Flammulina velutipes)의 Genome-wide SNP (Single Nucleotide Polymorphism)에 의한 계통 분석
우성이 ( Sung I Woo ),김은선 ( Eun Seon Kim ),한재구 ( Jae Gu Han ),장갑열 ( Kab Yeul Jang ),신평균 ( Pyung Gyun Shin ),오연이 ( Youn Lee Oh ),오민지 ( Min Ji Oh ),조성환 ( Sung Hwan Jo ),이정희 ( Jeong Hee Lee ),김경수 ( Kyung So 한국균학회 2015 한국균학회지 Vol.43 No.4
Genome-wide reanalyzed data of 25 Flammulina strains were compared against the reference genome (KACC42780) to establish a genome-wide single nucleotide polymorphism (SNP). The rate of mapping differences between the strains reflected in the strain variation in its result. Genome-wide SNPs distribution divided into types of homozygous SNP and heterozygous SNP moreover all of the strains demonstrated a wide variation in all of the regions. In the further study of topological relationship between the collected strains, phylogenetic tree was separated into 3 major groups. Group I contained F. velutipes var. related strains of ASI 4062, 4148, 4195. Group 2 contained strains that are different species of ASI 4188 F. elastica, ASI 4190 F. fennae, and ASI 4194 F. rossica. The other 19 strains F. velutipes were classified as a single group. However, further experiment to discriminate its genetic relationship between the white group and brown group did not verify its validity. The inferred tree exhibited a phylogenetic relationship between Korea white fruitbody forming strains of ASI 4210, 4166, 4178 and Japan white fruitbody forming strains of ASI 4209, 4167 confirmed to be genetically closely related.
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대용량 BLDC 전동기의 영구자석 형상 최적화를 통한 최적화 기법 연구
우성현(Sung Hyun Woo),신판석(Pan Seok Shin),오진석(Jin Seok Oh),공영경(Yeong Kyung Kong),빈재구(Jae Goo Bin) 대한전기학회 2010 전기학회논문지 Vol.59 No.5
This paper presents a response surface method(RSM) with Latin Hypercube Sampling strategy, which is employed to optimize a magnet pole shape of large scale BLDC motor to minimize the cogging torque. The proposed LHS algorithm consists of the multi-objective Pareto optimization and (1+1) evolution strategy. The algorithm is compared with the uniform sampling point method in view points of computing time and convergence. In order to verify the developed algorithm, a 6 MW BLDC motor is simulated with 4 design parameters (arc length and 3 variables for magnet) and 4 constraints for minimizing of the cogging torque. The optimization procedure has two stages; the fist is to optimize the arc length of the PM and the second is to optimize the magnet pole shape by using the proposed hybrid algorithm. At the 3rd iteration, an optimal point is obtained, and the cogging torque of the optimized shape is converged to about 14% of the initial one. It means that 3 iterations aregood enough to obtain the optimal design parameters in the program.
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LHS를 이용한 소형 다상 외전형 BLDC 전동기의 코깅토크 최소화 연구 (Ⅱ)
우성현(Sung Hyun Woo),정현구(Hyun koo Chung),김영배(Yong Bae Kim,),신판석(Pan Seok Shin),오진석(Jin Seok Oh),공영경(Yeong Kyung Kong) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
소형 다상 외전형 BLDC 전동기의 코깅토크를 최소화하기 위해 코깅토크의 발생원인 중 하나인 영구자석의 형상에 샘플링 포인트기법인 LHS를 이용한 최적화 알고리즘을 적용하여 코깅토크를 최소화하는 최적 설계를 수행 하였다. 총 3번의 반복계산을 하여 코깅토크가 최소화 되는 최적점을 계산한 결과,최대 코깅토크가 0.20 [N.m] 에서 0.15 [N.m] 로, 초기 형상의 약 75%로 감소되었다.
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대퇴골 중간 간부 골절에서 시행한 최소 침습적 금속판 고정술
오형근 ( Hyoung Keun Oh ),주석규 ( Suk Kyoo Choo ),김종인 ( Jong In Kim ),우성종 ( Sung Jong Woo ) 대한골절학회 2013 대한골절학회지 Vol.26 No.2
Purpose: To investigate the surgical outcomes of patients with femoral mid-diaphyseal fractures treated with minimally invasive plate osteosynthesis (MIPO), which were difficult to intramedullary nailing. Materials and Methods: We evaluated 11 patients with femoral mid-diaphyseal fractures who were treated with MIPO. There were 7 males and 4 females and the mean age was 47 years (20-85 years). According to AO/OTA classification, there were 1 type of A1, 5 types of A3, 1 of B2 and 4 of B3. The reason of plate fixation instead of intramedullary nailing is as follows: femoral vessel and severe soft tissue injuries-2 cases, polytrauma patients with chest injury-6 cases, and narrow medullary canal diameter-3 cases. Six out of 11 cases were treated with initial external fixation as a damage control orthopedics. Results: The mean union time of 6 cases was 3.7 months (3-5 months). There were 5 cases (45%) of nonunion, which should be treated with autogenous bone graft. All cases of nonunion resulted from severe soft tissue damage and polytrauma, which needed initial external fixation. There was no case of malalignment and implant-related complication. Conclusion: In cases of difficult intramedullary nailing for the femoral mid-diaphyseal fractures, MIPO could be an alternative surgical option, but concurrent soft tissue injuries and multiple trauma may increase the risk of nonunion in spite of biological fixation.
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