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잠수함 개념설계에 모델기반 시스템 엔지니어링을 적용하기 위한 방법에 대한 연구
배정훈,김병목,김미희,신성철,김수영,안진우,Bae, Jeong-Hoon,Kim, Byung-Mok,Kim, Mi-Hee,Shin, Sung-Chul,Kim, Soo-Young,An, Chin-Woo 한국시스템엔지니어링학회 2013 시스템엔지니어링학술지 Vol.9 No.2
Because submarine is high-technology and very complex system, it takes a lot of time, cost and manpower for design. For efficient concept design, application of systematic method is required such as system engineering. In this study, we studied application method of MBSE for submarine concept design with SWBS (Ship Work Breakdown Structure). Components of submarine system from SWBS were classified and organized as system architecture with 'Vitech CORE'. Through the MBSE application for concept design, systematic, efficient and traceable concept design of submarine was considered.
배정훈 ( Jeong Hoon Bae ),안현영 ( Hyun Young Ahn ),이지현 ( Jee Hyun Lee ),권인 ( Kwon In ),문희봉 ( Hee Bong Moon ),김사진 ( Sa Jin Kim ),신종철 ( Jong Chul Shin ),나종구 ( Gong Gu Ra ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.4
Lymphangiomas are congenital malformations of lymphatic vessels that have the potential to infiltrate surrounding structures. In 95% of cases, they are located in the neck (cystic hygroma), head and axilla. But they can occur in a variety of anatomical lo
배정훈 ( Jeong Hoon Bae ),김연희 ( Yeun Hee Kim ),박인양 ( In Yang Park ),황성진 ( Seong Jin Hwang ),손정빈 ( Jung Bin Son ),김현경 ( Hyun Kyung Kim ),이동현 ( Dong Hyun Lee ),최은주 ( Eun Ju Choi ),이석우 ( Suk Woo Lee ),신종철 ( 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.6
목적 : 절박유산은 전체 임신의 15-20%에서 관찰되며 산과학에서 가장 흔하게 접하게 되는 문제점 중의 하나로 절박유산을 경험한 산모의 20-50%에서 실제 유산으로 진행되는 것으로 알려져 있고 여러 산과적 합병증과의 관련성도 보고되고 있다. 저자들은 절박유산을 겪은 임신부에서 임신 지속여부에 대한 예후를 알아보고 여러 합병증의 발생빈도에 대하여 알아보고자 했으며 실제 유산으로 이행되는 경우를 분석하였다. 현재까지 알려진 절박유산의 치료 방법을 적용하여 치료한 경우 예후에 어떠한 영향을 미치는지 분석하였고, 초음파 검사상 혈종을 보이는 경우와 보이지 않는 경우에 각기 산과적 예후에 차이가 있는지 알아보았으며 두 경우의 모체 혈청 태아알파단백의 농도에 차이가 있는지 분석하고자 하였다. 연구 방법 : 전체 연구 대상은 절박유산 88명과 대조군 5741명이었고 연구기간은 199년 1월부터 2003년 12월까지 5년간이었다. 임신부의 나이, 생리주기상 임신 주수, 초음파상 임신 주수, 산과력, 산과적 예후, 삼중표지자 검사 결과, 초음파 검사상 혈종의 유무, 치료를 시행한 경우 치료방법 등에 대한 조사를 실시하였고, 모든 연구 대상에서 초음파 검사를 시행하였다. 모체 혈청 태아알파단백의 측정은 정기 검진시 시행한 삼중 표지자 검사결과를 확인하여 얻었다. 결과 : 절박유산으로 진단당시 임신 주수는 92.±3.4주였으며 절박유산을 경험한 산모 중 17명 (19.3%)에서 실제 자연유산이 발생하였고, 임신유지 성공을 나타낸 71명의 경우 진단시 임신 주수는 9.6±3.6주로 임신유지에 실패한 경우의 6.6±18.주와 큰 차이를 보였다 (p=0.001). 치료방법에 따른 임신유지의 성공률에는 차이가 없는 것으로 나타났다. 혈종의 유무가 임신을 유지하는데 영향을 미치지 않는 것으로 나타났으며 산과적 합병증의 발생빈도에도 차이가 없는 것으로 나타났고 초음파 검사상 혈종의 유무와 모체 혈청 태아알파단백의 농도와는 통계적으로 유의한 연관성이 없는 것으로 나타났다. 결론 : 본 연구에서는 각기 다른 치요방법에 따른 예후에 차이를 보이지는 않았으나 향후 보다 정형화된 연구가 필요할 것으로 사료된다. 절박유산을 겪은 후 임신유지 성공을 나타낸 경우 진단시 임신 주수는 임신유지에 실패한 경우의 진단시 임신 주수와 주목할만한 차이를 보였으므로 절박유산의진단 시 제태 연령이 예후를 판단하는 지표로서 고려되어야 할 것으로 사료된다. Objective : Threatened abortion, one of the most common problems of pregnancy, develops 15-20% of pregnant women and progresses into the abortion in 20-50%. It is related to many obstetrical sequelae. We analyzed the prevalence of complication, disruption of pregnancy and the effect of recent treatments. In ultrasonographic examination, we divided all cases into two groups according to existence of hematoma. We compared the difference of two groups about the prognosis of pregnancy and maternal serum concentration of FP. Methods : A total 88 cases of threatened abortion and 5741 cases of normal pregnancy were studied from Jan., 1999 through Dec., 2003 at St. Paul Hospital in Seoul, Korea. We analyzed age, gestational age of menstruation and ultrasonogram, parity, results of triple test, existence of hematoma, efficacy of treatment. In all cases, we carrided out ultrasonic examination with LogiQ-400 (General Electronics Medical System, Tokyo, Japan). We checked the concentration of FP from triple test. Results : The mean gestational age at diagnosis was 9.2±3.4 weeks. After threatened abortion, successful cases were 71 and mean gestational age at diagnosis was 9.6±3.6 weeks. In comparison with 17 unsuccessful cases, whose mean gestational age at diagnosis was 6.6±1.8 weeks, it was thought to be significant differences (p=0.001). The success rates of pregnancy prolongation between groups of different treatments modalities are nearly similar. Existence of hematoma seems to have little impact on prognoses of pregnancy outcome and there were no meaningful differences of maternal serum FP concentration. Conclusion : In this study, we could find no difference between the groups those were treated with various methods. We thought that more systematic analysis about the treatment of threatened abortion would be needed. Un the cases that were diagnosed threatened abortion at later gestational age, we could find obvious improvement of the pregnancy outcome. So we conclude that gestational age at the diagnosis is potential parameter of prognosis.
배정훈 ( Jeong Hoon Bae ),송록 ( Rok Song ),김미란 ( Mee Ran Kim ),이용석 ( Yong Seok Lee ),박종섭 ( Jong Sup Park ) 대한산부인과학회 2008 Obstetrics & Gynecology Science Vol.51 No.2
Mesenteric cysts are uncommon, and they are histopathologically classified as pseudocyst, mesothelial cyst, lymphangioma and omental cyst. We report a case of a 27-year-old female with a huge cystic mass arising from greater omentum. Patient complained the symptoms of abdominal distention due to massive ascites and intermittent pelvic discomfort. The diagnostic examinations including ultrasonography and computed tomography were performed and identified a huge, intraabdominal cyst. Laparoscopic resection of cyst was done with no clinical and symptomatic evidence of adverse event till 12 months. The diagnostic role of sonography and CT in ascites with unknown etiology is emphasized. Minimal invasive surgery showed comparable result to open exploration.
풍향에 따른 화재영향을 고려한 FPSO 상부구조물 고압가스 모듈내부의 장비 최적배치 연구
배정훈(Jeong-hoon Bae),정연욱(Yeon-Uk Jeong),신성철(Sung-Chul Shin),김수영(Soo-Young Kim) 한국해양공학회 2014 韓國海洋工學會誌 Vol.28 No.5
The purpose of this study was to find the optimal arrangement of FPSO equipment in a module while considering the economic value and fire risk. We estimated the economic value using the pipe connections and pump installation cost in an HP (high pressure) gas compression module. The equipment risks were also analyzed using fire scenarios based on historical data. To consider the wind effect during a fire accident, fuzzy modeling was applied to improve the accuracy of the analysis. The objective functions consisted of the economic value and fire risk, and the constraints were the equipment maintenance and weight balance of the module. We generated a Pareto-optimal front group using a multi-objective GA (genetic algorithm) and suggested an equipment arrangement method that included the opinions of the designer.