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한경근(Kyung Geun Han),배성진(Sung Jin Bae),김성은(Seong Eun Kim),김기현(Ki Hyun Kim),박정하(Jeong Ha Park),지삼룡(Sam Ryong Ji),임정현(Jeong Hyun Lim),장광열(Goang Yul Jang) 대한신장학회 2000 Kidney Research and Clinical Practice Vol.19 No.3
N/A There are some clinical evidences that hepatitis B virus(HBV) infection may cause IgA nephropathy. To evaluate clinical significances and pathogenetic roles of HBV infection in patients with IgA ne-phropathy, we studied that varius clinical and lab- oratory findings in 172 patients with IgA nephrop-athy as serum hepatitis B surface antigen(HBsAg) positive(19 cases) and negative group(153 cases). The result was as following: 1) The incidence of positive serum HRsAg was 11.0%(19/172 cases) in patients with IgA nephrop- athy and it was higher than that of the randomized age-sex matched general population(4.1%) but has no significance statistically. 2) There was no significant differences in incidence of hypertension, serum levels of IgA, C3, SGOT, SGFf between HBsAg postive and negative group. 3) The cases of nephrotic range proteinuria(3.5g/ day) was more prevalent in HBsAg positive group (31.6%) than that in negative group(7.2%). significantly(p<0.05). 4) The cases of impaired renal function(serum creatinine more than 1.4mg/dL) were more frequent in HBsAg positive group(42.19%) than that in neg-ative group(13.1%) significantly(p<0.05).
김운성(Woon-Sung Kim),배한경(Han-Kyung Bae),허경무(Kyung-Moo Huh) 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
In this thesis, a self-tuning control method based on Variable Structure System technique for tracking control of Direct- Drive motor is presented. The self-tuning control could not make the tracking error zero in the transient period. This tracking error may be due to disturbances or the error in parameter identification. To overcome this problem, a self-tuning control method based on discrete time VSS technique is presented. The STC based on VSS technique gives good tracking performance of the reference signal in the transient period. The proposed controller is robust to parameter errors and disturbances. The performance of the proposed controller is compared with that of simple STC through digital computer simulation.
김기평(Ki-pyoung Kim),강호근(Ho-keun Kang),장재식,천강우,배한경(Han-kyung Bae) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.10
선박의 설계와 운영을 개선하여 에너지 효율을 증대하고, 온실가스 배출을 감소시키기 위한 광범위한 기술들이 IMO에서 검토되고 있다. 특히 MEPC는 57, 58, 59, 60차 회의를 통하여 선박 온실가스 저감을 위한 논의를 진행하고 있으며, ‘10년 10월 개최 예정인 MEPC 61차 회의에서 MARPOL 부속서 6을 수정하여 온실가스 저감을 위한 강제조항으로 도입하려는 노력을 추진 중이다. 본 연구에서는 현재 운항하고 있는 선박을 대상으로 적용 가능한 GHG 저감을 위한 운항효율화 기술을 분류하고, 각 세부기술에 대한 기술조사의 내용을 보고한다.