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Education and Training Program using HANARO
서경원,한은영,Seo, Kyung-Won,Han, Eun-Young Korean Association for Radiation Protection 1999 방사선방어학회지 Vol.24 No.4
This report will introduce the epitome about the subject, HANARO (Hi-flux Advanced Neutron Application Reactor designed by KAERI in early 1995) Utilization Education Training Program Development and Operation, which is one of the nuclear research basic expansion businesses executed from 1999. 12. to strengthen the usage of HANARO. This program consists of the basic reactor experiments program for university students who have specialty of nuclear and other engineering, and the special research education program for faculties from universities and researchers from industrial fields. Principle lessons are reactor operation, radioisotope production, neutron activation analysis, neutron radiography, radiation shield (health physics), nuclear fuel combustion measurement by gamma scanning arrangement, and CNS (Compact Nuclear Simulator) and so on.
산화알루미늄 분말의 탄소열환원 및 직접 질화반응을 통한 질화알루미늄 나노분말의 합성
서경원,이승용,박종구,김성현,Seo, Kyung-Won,Lee, Seong-Yong,Park, Jong-Ku,Kim, Sung-Hyun 한국분말야금학회 2006 한국분말재료학회지 (KPMI) Vol.13 No.6
Aluminum nitride (AlN) nanopowders with low degree of agglomeration and uniform particle size were synthesized by carbothermal reduction of alumina and subsequent direct nitridization. Boehmite powder was homogeneously admixed with carbon black nanopowders by ball milling. The powder mixture was treated under ammonia atmosphere to synthesize AlN powder at lour temperature. The effect of process variables such as boehmite/carbon black powder ratio, reaction temperature and reaction time on the synthesis of AlN nanopowder was investigated.
실험연구 : Sufentanil 투여가 흰쥐적출심장에서 허혈시 심근기능 및 관상동맥혈류에 미치는 영향
서경원 ( Kyung Won Seo ),신명강 ( Myoung Gang Shin ),이윤숙 ( Yoon Sook Lee ),장문석 ( Moon Seok Chang ),김운영 ( Woon Young Kim ),김재환 ( Jae Hwan Kim ),박영철 ( Young Cheol Park ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.51 No.2
Background: Some opioids have been shown to attenuate an ischemia-reperfusion injury in an isolated-heart model. The aim of this study was to evaluate the effect of sufentanil on the cardiac function in isolated-heart models when given before and after prolonged periods of low flow ischemia. Methods: Isolated rat hearts were stabilized for 30 minutes and subdivided into four groups (each n = 7). The control group was subjected to low flow ischemia (LFI 0.3 ml/min) of 5% dextrose water for 30 minutes, followed by perfusion with a modified Krebs solution at a constant pressure for 60 minutes. In the sufentanil groups, different sufentanil (12.5 mg/L, 25 mg/L, 50 mg/L) doses were administered with the modified Krebs solution after 30 minutes of stabilization until the end of the experiment with the exception of the LFI group. The left ventricular end systolic pressure (LVESP), dP/dt max, heart rate and coronary flow were measured. After reperfusion, the infarct size of all groups was measured. Results: The control and the sufentanil groups had a lower LVESP, dP/dt max, coronary effluent flow and arrhythmia duration after ischemia and reperfusion than those before ischemia. The infarct sizes in the sufentanil groups were smaller than those in the control group. However the infarct sizes of the sufentanil groups were similar. Conclusion: Sufentanil reduces the infarct size but does not improve the post-ischemic functional dysfunction. (Korean J Anesthesiol 2006; 51: 216~21)
복합동사 전항(前項)동사의 형태적 특징에 관한 고찰-「∼だす」와「∼はじめる」를 중심으로-
서경원 ( Kyung Won Seo ),김용균 ( Yong Gyun Kim ) 한국일어일문학회 2016 日語日文學硏究 Vol.97 No.1
일본어 복합동사는 일본어 학습자들에게 있어 그 습득이 대단히 어렵다고 간주되어 왔다. 특히「~だす」와「~はじめる」는 기존의 선행연구에서는 의미 차이를 중심으로 연구가 행해져 왔고 두 표현 앞에 접속하는 전항(前項)동사의 형태적 특징에 주목한 연구는 그다지 눈에 띄지 않는 실정이다 본 논문에서는 이와 같은 선행연구의 문제점을 감안해「~だす」와「~はじ める」 앞에 접속하는 동사의 경향, 다시 말해 전항동사의 형태적 특징에 대해 분석해 봤다. 고찰을 통해「~だす」에 비해「~はじめる」는 특정 동사와의 결합이 약하고 サ변동사, 「형용사+なる」, 복합동사 등과의 결합에 있어서도 많은 용례가 보였다. 이와 같은 결과로 보아「~だす」와「~はじめる」를 지도할 때는 광범위하게 사용이 가능한「~はじめる」를 일반적인 개시를 나타내는 조 어성분으로 제시하는 것이 바람직하다고 생각된다. It has been said that a compound verb which combines more than one verb is very difficult to acquire for those who study japanese. Especially, the expression which has 2 meanings like 「~dasu」and 「~hajimeru」is also hard to distinguish clearly between them. 20 japanese modern fictions was analyzed in terms of morphological characteristics in order to differentiate between 「~dasu」and 「~hajimeru」. It aims to describe the tendencies among them. As a result of this study, it was revealed that two expressions was commonly identified at preceding verbs. This study recommend for most japanese learners that 「~hajimeru」may be used to start movements because 「~hajimeru」 can be combined widely with various verbs.
프로토콜 분석법을 적용한 사이버 쇼핑몰 사용성 평가에 관한 연구
서경원(Kyung Won Seo),김돈한(Don Han Kim) 한국기초조형학회 2002 기초조형학연구 Vol.3 No.1
In this thesis, the problems derived through the evaluation of usability, solved in the cyber shopping mall interface usage were analyzed and compared and a new interface design construction was proposed for customers to be able to enjoy shopping purchasing products easily. This thesis is divided into three main parts. Firstly, the characteristics of the purchasing behavior of customers in the actual world was examined and the characteristics of the organization, form and shopping behavior in existing cyber shopping malls were looked into. Secondly, with the foundation of shopping patterns through cyber shopping behavior, the elements of cyber shopping formation were extracted and using the method of video protocol analysis method, the usability evaluation and the process of it, was proposed. Lastly, through examples of other theses, with the foundation of the results of protocol data analysis, the problems of existing cyber shopping mall interface were analyzed and the construction guide for interface design of cyber shopping mall was proposed.
서경원 ( Kyung Won Seo ),윤기영 ( Ki Young Yoon ) 대한소화기학회 2013 대한소화기학회지 Vol.61 No.3
항역류수술은 불응성 위식도역류질환에 대하여 효과가 입증된 치료방법이며, 장기간의 프로톤 펌프 억제제 복용을 대체할 만한 매력적인 대안이다. 1974년 발표된 Demeester 등 1의 전향적 무작위배정 시험연구에서 Belsey Mark IV나 Hill 수술에 비해 증상개선 효과 뿐만 아니라 식도내압검사에 의해 원위부 식도괄약근 압력의 개선이 확인된 이후, 니센 수술은 항역류수술의 중심이 되었다. 이후 복강경 시대에서도 술식이 간단하고 누구나 쉽게 재현할 수 있으며 수술결과가 좋아, 그 역할은 지금까지 이어져 오고 있다. 그러나 합병증이 동반되지 않은 위식도역류질환에서도 치료실패는 발생한다. 특히 바렛 식도를 가진 경우 경험이 풍부한 병원에서도 복강경 니센 수술 후에 높은 재발률이 보고되며, 횡경막 탈장이 동반된 경우에는 더 높은 재발률이 보고되고 있다. 저자들의 이전 연구에서 실시한 복강경 니센 수술과 Hill 수술을 비교한 무작위배정 연구에서는 두 수술 사이에 동등한 효과를 보였다. 2 그리하여 저자들은 360° wrap을 씌우는 니센 수술을 시행한 뒤 아래에 Hill 수술을 추가하여 위식도접합부를 고정함으로써 재발을 줄이려는 술식을 고안하여 feasibility와 safety를 보기 위한 pilot study를 시행하였다. 안정성 측면에서 볼 때 30일 사망률은 나타나지 않았으며 DeMeester 점수의 확실한 감소와 여러 가지 삶의 질 평가지수에서 의미있는 개선을 보였다. Article: The Laparoscopic Nissen-hill Hybrid: Pilot Study of a Combined Antireflux Procedure (Surg Endosc 2013;Jan. [Epub ahead of print])