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RDBMS를 이용한 XML DTD 데이터베이스와 확장 SQL의 설계
오준환(Jun-Hwan Oh),이병욱(Byung-Wook Lee) 한국정보과학회 2000 한국정보과학회 학술발표논문집 Vol.27 No.2Ⅰ
최근 XML문서를 저장 및 검색하기 위한 연구가 활발히 진행되고 있다. 하지만 기존의 연구는 주로 XML문서 저장을 위한 연구들이었다. 즉 XML문서를 정의해주는 DTD 문서의 저장에 관한 연구는 상대적으로 적었다. 하지만 DTD문서를 효율적으로 저장하고 관리하여 재활용함으로써 XML문서를 효율적으로 관리할 수 있다. 본 논문에서는 DTD를 RDBMS에 저장하기 위한 스키마를 제안하고, 저장 방식은 정보의 중복 저장을 막고 DTD의 모든 내용을 수용할 수 있도록 설계하였다. 또 제안하는 데이터모델에 적용하여 SQL의 DDL을 확장하였다. 제안한 DTD 데이터베이스로 인해 DTD의 재활용과 관리를 할 수 있게 되었고 SQL의 확장으로 제안시스템의 사용을 용의 하게 하였다.
吳晙煥(Oh Jun Hwan),金基郁(Kim Ki Wook),朴炫局(Park Hyun Kook) 한국의사학회 2001 한국의사학회지 Vol.14 No.2
Throughout this paper, I adjusted the study of ‘Qian Yi’(錢乙)’s Medical Thought, and the following is the summary. 1. ‘Qian Yi’ wrote ‘Xiao Er Yao Zheng Zhi Jue’(『小兒藥證直訣』, edited by 誾季忠), and there were ‘Shang Han Lun Zhi Wei’(『傷寒論指微』), ‘Ying Ru Lun’(『?乳論』), however those are loss of the record. 2. Qian Yi’s ‘Zhi Jue’(『直訣』) was influenced by ‘Lu Xin J ing’(『??經』), yet if we compare the quality of ‘Sheng Li、 Byeng Li、 Bang J ae’(生理、 病理、 方劑), ‘Lu Xin Jing’ cannot be the foundation of ‘Zhi Jue’. He took over ‘Nei Jing、 Shang Han Lun、 Jin Gui Yao Lue、 Shen Long Ben Cao Jing、 Tai Ping Sheng Hui Fang’(『內經』、 『傷寒論』、 『金?要略』、 『神膿本草經』、 『太平聖惠方』) and put them together to the direct clinical experiences of pediatrics. 3. There is no reference regarding the difficulties of pediatric diagnosis and diseases in ‘Huang Di Nei J ing’(?黃帝內經?) Before ‘Bei Song’(北宋), regardless of the lack of data related to pediatric diseases, ‘Qian Yi’ established the pediatric system in ‘Xiao Er Yao Zheng Zhi Jue’ for the first time. 4. In his diagnosis of the pediatric diseases, he ‘Si Zhen He Can’(四診合參), also considered in the eye exam seriously. In addition, he closely combined ‘Wu Zang Bian Zheng’(五臟辨證), and diagnosis the pediatric diseases. 5. ‘Wu Zang Bian Zheng’, what Qian established method was based on ‘Zheng Ti Guan’(整體觀) in ‘Huang Di Nei Jing’. It was based on clinical experiences and established the perspectives of ‘Tian Ren Xiang Ying’(天人相應). First of all, he pinpointed ‘Zhu Zheng’(主證) clearly. Secondly, he pinpointed the relationships to symptoms and then, he distinguished a generic character of ‘Xu、 Shi、 Ha n、 Re’(虛、 實、 寒、 熱). Finally, he made an induction from genealogical pediatric physiology. 6. ‘Qian Yi’ took a serious view of ‘Ban Zhen’(斑疹), the inadequate field in those days. At that time, he criticized on the habituation of the misuse of medication. He treated separately which ‘Ji Jing’(急驚) as ‘Liang Xie’(凉瀉) and ‘Man Jing’(慢驚) as ‘Wen Bu’(溫補). He proposed ‘Cong Gan Zhu Feng, Xin Zhu Jing’(從肝主風, 心主驚) theory and formulated ‘Jing Feng’(驚風) theory as well. 7. As an opponent of a tendency to misusage of medicine, ‘Qian Yi’ made out a prescription with pliant medicine. He emphasized on the treatment to ‘Gong Bu Shang Zheng、 Bu Bu Zhi Xie、 Xiao Bu Jian Shi’(攻不傷正、 補不滯邪、 消補兼施) because he had so lucid demonstration to ‘Xu Shi Han Re’(虛實寒熱) of the five viscera in the field of ‘Bang Yak’(方藥). 8. There were no pediatrics schools at that time, however, the pediatrics was being made up gradually by ‘Jin Yuan Si Da J ia’(金元四大家) who was influenced by ‘Qian Yi’. He raised an objection to medical treatment using pliant medicine. ‘Qian Yi’ applied ‘Qu Xia’(驅下) treatment using ‘Han Liang’(寒凉) medicine. ‘Han Liang Pai’(寒凉派) is greatly influenced by Qian. ‘Chen Wen Zhong’(陳文中) had a great impact on ‘Han Liang Pai’ who used a ‘Zao Shu Wen Bu’(燥熟溫補) medicine for treatment. Since ‘Song Jin’(宋金), he had a tremendous influence on pediatrics treating patients in both ‘Han Wen’(寒溫) ways. 9. ‘Qian Yi’ had an influence on his medical thoughts on future generations, especially to ‘Wan Quan’(萬全) of ‘Ming Dai’, ‘Wu Tang’(吳塘) of ‘Qing Dai’(淸代) and ‘Yun Shu Jie’(?樹珏) of ‘Min Guo’(民國). ‘Wan Quan’ is an advocate of ‘You Yu、 Bu Zu Zhi Shuo’(有餘、 不足之說)of ‘Xiao Er Wu Zang’(小兒五臟) that he revealed Qian’s ‘Wu Zang Bian Zheng’(五臟辨證).
친환경 배전용 GIS 절연소재의 개발을 위한 Epoxy/Nano ATH Composites의 섬락 및 저항성 아크특성
서승현(Seung-Hyun Seo),오준환(Jun-hwan Oh),신만호(Man-Ho Shin),박근완(Geun-Wan Park),임효빈(Hyo-Bin Lim),이소연(So-Yeon Lee),김진홍(Jin-Hong Kim),나상호(Sang-Ho Nah),ALISHER,박재준(Jae-Jun Park),Onorov Alisher 대한전기학회 2023 대한전기학회 학술대회 논문집 Vol.2023 No.7
In this study, it is thought that the effect of nano ATH particles on flashover performance and arc resistance of epoxy resin insulators can be seen. Arc characteristics and flashover voltage characteristics were evaluated by resistance according to the filling content (0, 1, 3, 5, 7, 9 phr) of nano-ATH surface-modified DGEBA epoxy resin.In the flashover characteristics of the microcomposite filled with the original epoxy resin and the epoxy alumina microparticles, the flashover voltage is very low when the inorganic material is not filled.The improvement in flashover performance is believed to be due to the increase in surface conduction.
친환경 배전용 GIS 절연소재의 개발을 위한 Epoxy/Nano ATH Composites의 섬락 및 저항성 아크특성
서승현(Seung-Hyun Seo),오준환(Jun-hwan Oh),신만호(Man-Ho Shin),박근완(Geun-Wan Park),임효빈(Hyo-Bin Lim),이소연(So-Yeon Lee),김진홍(Jin-Hong Kim),나상호(Sang-Ho Nah),ALISHER,박재준(Jae-Jun Park),Onorov Alisher 대한전기학회 2023 대한전기학회 학술대회 논문집 Vol.2023 No.7
In this study, it is thought that the effect of nano ATH particles on flashover performance and arc resistance of epoxy resin insulators can be seen. Arc characteristics and flashover voltage characteristics were evaluated by resistance according to the filling content (0, 1, 3, 5, 7, 9 phr) of nano-ATH surface-modified DGEBA epoxy resin.In the flashover characteristics of the microcomposite filled with the original epoxy resin and the epoxy alumina microparticles, the flashover voltage is very low when the inorganic material is not filled.The improvement in flashover performance is believed to be due to the increase in surface conduction.
위양성 양수 Acetylcholinesterase 를 보인 정상 임신 1 예
김연희(Youn Hee Kim),이지현(Jee Hyun Lee),문희봉(Hee Bong Moon),오준환(Jun Hwan Oh),이귀세라(Gui Se Ra Lee),이종승(Chong Seung Yi),신종철(Jong Chul Shin),김수평(Soo Pyung Kim) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.2
Maternal serum α-fetoprotein (AFP) has been used for a long time for the prenatal diagnosis of neural tube defects in women at midtrimester of gestation. But AFP is elevated not only in cases of neural tube defects, but also in fetus with congenital nephrosis, abdominal wall defects, fetal demise, low birth weight or simply erroneously calculated gestational age. So, when maternal serum AFP is increased, gestational age of the fetus must be re-evaluated and targeted ultrasonographic evaluation is indicated to rule out neural tube defects. If NTDs are suspected or ultrasound is non-diagnostic, amniotic fluid AFP are measured and when AF-AFP is elevated, the presence or absence of acetylcholinesterase should be evaluated. The detection rate of open neural tube defects using amniotic acetylcholiesterase is reported to be as high as 96 to 99% with a 0.06% and 0.14% of false positive rate in amniotic fluids non-contaminated and contaminated by blood, respectively. We report a case with elevated mid-trimester MS-AFP, AF-AFP and positive amniotic acetylcholin- esterase, but in which repeated sonographic findings were normal, and result in delivery of a heathy baby without anomalies.
이희종(Hee Jong Lee),이준서(June Seo Lee),김행수(Haeng Soo Kim),양정인(Jeong In Yang),오준환(Jun Hwan Oh),한기수(Ki Su Han),오기석(Kie Suk Oh) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.3
Objective : To evaluate the perinatal outcomes of twin pregnancies with birth weight discordancy and to determine factors affecting on the outcomes. Methods : We studied 367 pairs of twin delivered after 28 weeks of gestation at the Ajou University Hospital between June 1994 and June 2000. Twins were stratified into three groups according to the percent difference of birth weight. Birth weight difference less than 15%(concordant) was classified into control group(268 pairs), between 15% and 25% into group 1(72 pairs), and more than 25% into group 2(27 pairs). Perinatal outcomes of each group were assessed retrospectively. Results : In smaller twins, mean birth weight(control vs group 1 vs. group 2 : 2274.3±424.9 gm vs. 2012.9±303.2 gm vs. 1635.2±440.8 gm, p<0.05), duration of neonatal intensive care unit admission(7.6±11.5 days vs. 11.6±10.8 days vs. 18.6±14.4 days, p<0.05), and the frequency of neonatal jaundice(8.6% vs. 12.5% vs. 29.6%, p<0.05), the frequency of small for gestational age infant(8.2% vs. 40.3% vs. 74.1%, p<0.05), and perinatal mortality(2.6% vs. 2.8% vs. 11.1%, p<0.05) in group 2 showed statistically significant difference from control group. No difference was found in larger twins. In multiple logistic regression analysis, independent prognostic factors of discordant twin were gestational age and birth weight. Conclusion : In twin pregnancies with birth weight discordancy, larger twins showed no difference in perinatal outcomes but smaller twins with birth weight discordancy more than 25% showed significantly higher perinatal mortality and morbidity. However independent prognostic factor was not discordancy itself but gestational age and birth weight.