딕토글로스 중심 수업이 한국어 듣기 이해에 미치는 영향 -중급 단계를 대상으로-

최문석 국제한국어교육학회 2012 한국어 교육 Vol.23 No.4

This study aims to show the positive effects of students’ listening comprehension in dictogloss-focused listening lessons. In this study, the proposed dictogloss-focused listening lesson refers to the lesson implemented during the listening stage of the dictogloss activity. However, the dictogloss activity proposed in this report has some disparities from the regular teaching technique of focus on form. Dictogloss activity, in from-focused teaching is generally listening to a monologue-style text written in the form of plain text to compose a text of the same form but in this report the implemented dictogloss activity's main disparity is that one listens to dialogue form text and composes spoken form text. The experimental class took place at Kyunghee University’s Institute of International Education (IIE), Intermediate level 2 with 6 classes and 64 students. 3 classes were taught the regular intermediate listening lesson at Kyunghee University IIE while the 3 experimental classes commenced dictogloss-focused listening lessons. Two aspects of the experiment's results were analysed. The amount of the mean answer from contrasting groups’ examination questions and the type-token ratio. In the case of the amount of the mean answer, there were 4 experimental questions and in the case of the variety of answers, one of the 4 questions was analyzed. In both, the analyzed results of the mean answer amount and the two types of varieties, the experimental group showed superior results. In other words, dictogloss-focused listening lessons can show a positive effect on students’ listening comprehension. Therefore, this study concludes that if this listening teaching method be continued then the students’ listening ability will improve considerably.

C형 만성간염의 진단과 치료 전략 : 간이식과 C형간염

최문석 대한간학회 2004 추계 학술대회 Vol.10 No.-

C형 만성간염의 진단과 치료 전략 : 간이식과 C형 간염

최문석 대한간학회 2004 Clinical and Molecular Hepatology(대한간학회지) Vol.10 No.4(S)

간의 염증성 국소 병변

최문석 대한간학회 2012 Clinical and Molecular Hepatology(대한간학회지) Vol.18 No.1(S)

A variety of focal inflammatory lesions may present clinically with symptoms or may be noted incidentally during imaging evaluation for other clinical indication or routine check-up. Among them, eosinophilic liver abscess and inflammatory pseudotumor of the liver are noteworthy. Eosinophilic liver abscess is a disease with focal eosinophilic infiltration and microabscess formation in the liver. It is associated with low attenuation liver mass, a history of intaking raw meat or fish, peripheral eosinophilia. Inflammatory pseudotumor is a rare disease involving diverse organs such as lung, liver, stomach, and soft tissue. It consists of a fibrovascular stroma infiltrated with inflammatory cells, especially plasma cells. Although its pathophysiology remains uncertain, infection or abnormal reaction to infection is suggested as a cause of inflammatory pseudotumor of the liver. Histologic confirmation is warranted to avoid unnecessary operation.

우리나라 B형 및 C형 바이러스성 간견병증 환자에서의 간세포암 발생률의 비교에 대한 전향적 연구

최문석,이효석,이준행,김정룡 대한간학회 1996 Clinical and Molecular Hepatology(대한간학회지) Vol.2 No.1

Objectives:patients with HCV-associated liver cirrhosis had greater risk of hepatocellular carcinoma(HCC) than patients with HRV-associated in areas pirevalent for HCV infection. However, the relative risks of. HBV and HCV for HCC have not been investgated in an HBV-endemic area. The piresent study was designed to study prospectively the relative risk of HBV and HCV for HCC In korea. An HBV- endemic, area. Methods: We enrolled 373 patien ts with liver ciirrhosis who had experienced thc esophageal variccal bleeding and had been treated by endoscopic injection sclerothenpy, and survived more than ) 3 months. They were devided into three grourp 1) 245( 65.7%) patients who were positive for HBsAg but nagative for anti- HCV were in HBV group 2) 48 (l2.9'% ) who were negative for HBsAg but positive for anti-H C V were HCV group, and, 3)80 (21.4%) were negative for both were NBNC group. The duta were analyzed stalistically using Kaplan-Melermethod and COX proportional-hazzards regression analysis. Results:During the mean follow-up period of 3.4 years. 68(18.2 %) patients developed HCC. The cumulattive incidence of HCC. Among all patients was 25.4 % during the first 5 years: the incidences in each HBV. HCV and NBNC group during, the first 3 years were 18.3%,22.0%, and 5.6%. Respectively and those during the first 6 years were 34.7%, 54.8%, and l7.0%, respectively. By univeriate analysis age older than 50 yearser and initial serum a-PF level higher than 5ng/ml also appered to be predictors of grealer risk for the development of HCC.. By multivarite analysis. HlBsA g positivity, anti-HCV positivily, old age, and male sex were independent risk factors for HCC$quot;. Conclusion ;We showed for the first time by a prospective study that anti-HCV positive cirrhotic patients had no less or even greater risk I or the development of HCC. Than HBsAg-positive paticnl seven in in HBV-endemic korea as they had in HCV-endemic area such as Japan and Italy .

A STUDY ON EXPANDABILITY OF THE FLAME KERNEL AND THE COLDFLAME OF THE IGNITION SYSTEM BY THE APPLICATION OF AIS TECHNOLOGY IN LEAN-BURN CONDITION

최문석,김권세,이경태,최두석 한국자동차공학회 2021 International journal of automotive technology Vol.22 No.1

The main objective of this thesis is to propose a method to overcome a limitation of combustion in lean-burn condition by applying the Amplified Ignition Source (AIS). In order to analyze the combustion efficiency, Constant volume combustion chamber (CVCC) was designed to conduct experiments such as flame visualization, combustion pressure and flame kernel. As the experimental and analysis conditions, Ignition device were applied to two models, C_type plug and J_type plug, and conducted the analysis and experiment with parameters of compressed pressure and air/fuel ratio. Experimental results showed that as the air/fuel ratio increased, the efficiency of C_type decreased, resulting in large combustion delay in the air/fuel ratio 1.4 area, and a misfire occurred without burning in the 1.6 area. However, in case of J_type, combustion occurred smoothly up to air/fuel ratio 1.6, and the combustion pressure was also higher than that of C_Type. In addition, In the case of coldflame expansion, J_Type was doubled at air/fuel ratio 1.0. air/fuel ratio, and the expansion of the coldflame increased as the air/fuel ratio increased. As the combustion process in the lean combustion area proceed the combustion efficiency of J-type improves.

QC 매트릭스 도법을 활용한 중대재해법 대비 전략 수립

최문석 한국품질경영학회 2022 한국품질경영학회 학술대회 Vol.2022 No.1

2022.1.27. 대한민국 기업(근로 5인 이상)에게 안전보건 관련하여 국가 법률인 “중대재해처벌법”이 발효되어 기업의 최고경영자에게는 경영 리스크 관점에서 큰 이슈가 되고 있다. 종전 산업안전보건법과 달리 사망사고 1명이 발생해도 기업의 최고 경영자에게 형사적 책임을 물을 수 있는 조항(1년 이상 징역 또는 10억 이하의 벌금)이 있고 실제 22.2.14 삼표산업 대표이사가 채석장 붕괴 사망사고의 책임을 물어 경찰에 입건이 되었다. 이러한 안전보건의 외부 영향(국가 법적 규제 강화)에 대비, 대응하기 위해서는 실제 중대재해(특히 근로자 사망사고)가 발생하지 않으면 처벌의 대상이 아니므로 사고의 예방에 초점을 맞추어 예방대책을 수립하고 체계적으로 실행하여 중대재해를 예방하는 것이 근본적인 대안이다. 이를 위해 먼저 新QC 7도구인 매트릭스 도법을 활용하여 기업의 현장과 중대재해 종류 별로 발생 현장을 식별하고 그 현장에서 일어나는 중대재해의 유형을 파악하는 것이 예방의 첫 시작이다. 이후 현재의 안전사고 관리대책을 점검하면 현재의 대비 및 대응 수준을 파악할 수 있으며 파악한 그 수준에 따라 계층(최고경영자-경영자-관리자-근로자) 별로 할 일을 구체화한다. 이후 계층별로 Fail safe 투자(최고경영자,경영층), 안전 작업관리(관리자), 근로자 안전 수칙 준수(근로자) 등 대비 및 대응 관점의 추가 대책을 수립하여 각 계층별로 할 일을 명확히 인식(Awareness)하고 프로세스에 의한 관리를 통해 재해 현장을 구축할 수 있다. 본 논문에서는 간단한 품질 기초 도구인 매트릭스 도법을 활용하여 안전보건 현상을 파악하고 많은 기업이 도입, 구척하고 운영중인 ISO 45001:2018(KOSHA 45001) 안전보건경영시스템에 연계하여 조직적, 체계적으로 중대재해의 발생을 예방하는 무사고 기업을 실현하는 전략적 방안 및 실제 구현 사례(삼성전자 협력사,철강산업)에 대해 고찰하고자 한다.

Single-port robot-assisted abdominoperineal resection: a case review of the first four experiences

최문석,윤성현,신정경,박윤아,허정욱,조용범,김희철,Lee Woo Yong 대한대장항문학회 2022 Annals of Coloproctolgy Vol.38 No.1

Recently, abdominoperineal resection (APR) using a robot has been demonstrated in other studies. However, there has been no report on APR for rectal cancer using the single-port robot (SPR) platform. In response to this research gap, we described the clinical experience of APR using a SPR. From April 2019 to March 2020, APR using a SPR platform was performed in a total of 4 patients. Three patients had a transumbilical approach, and 1 patient had a transstoma site approach. The average operation time was 307 minutes, and the patient docking time to the SPR platform was 133.5 minutes. There were no complications during the operation, and no laparoscopy or open conversion. No reoperation occurred within 30 days. Mild postoperative complications occurred in 2 patients. We found that APR has safety and feasibility in surgery using an SPR platform. There was no intraoperative event and severe postoperative complications.

성인에서 참고구간 내의 혈중 Gamma-glutamyltransferase 농도에 따른 대사증후군 및 제2형 당뇨병 발병률과의 관련성

최문석,배태원,이재현,조용곤,이혜수,최삼임,김달식 대한진단검사의학회 2013 Laboratory Medicine Online Vol.3 No.1

Background: This study was conducted to establish reference intervals (RIs) for serum gamma-glutamyltransferase (GGT), and to evaluate the association between serum GGT levels within RIs and the prevalence of metabolic syndrome (MetS) and type 2 diabetes mellitus (DM) in men and women. Methods: A total of 363 healthy adults (137 men and 226 women) were enrolled for establishing the RIs of serum GGT. A cross-sectional study was conducted with 919 individuals (519 men and 400 women) to evaluate the associations between gender-specific serum GGT RI quartiles and prevalence of MetS and DM. Results: The RIs for serum GGT levels (central 95th percentile ranges) were 9.0-70.6 IU/L and 4.0-31.3 IU/L in men and women, respectively. In men, the odds ratios (ORs) and 95% confidence intervals (CIs) for the prevalence of MetS in 4 serum GGT quartiles (lowest to highest) were 1.0 (reference), 3.6 (0.7-18.0), 8.8 (2.0-39.1), and 17.4 (4.0-75.3), respectively, while the ORs (95% CIs) for the prevalence of DM were 1.0 (reference), 1.0 (0.3-3.0), 1.7 (0.6-4.6), and 2.6 (1.0-6.6), respectively. In women, the corresponding ORs (95% CIs) were 1.0 (reference), 3.3 (0.6-16.6), 5.8 (1.2-27.3), and 18.8 (4.3-82.2) for MetS, respectively, and 1.0 (reference), 1.6 (0.3-9.7), 1.6 (0.3-9.9), and 8.0 (1.7-36.7) for DM, respectively. These significant relationships persisted after adjusting for age, alcohol intake, body mass index, and smoking. Conclusions: Serum GGT levels, even within RIs, were proportionally associated with prevalence of metabolic syndrome and DM in both men and women. Serum GGT level may be an independent predictor for chronic degenerative diseases. 배경: 본 연구에서는 건강한 성인에서 혈중 GGT 농도의 참고구간을 설정하고, 참고구간 내의 혈중 GGT 농도에 따른 대사증후군 및제2형 당뇨병 발병률과의 연관성을 분석하고자 하였다. 방법: 혈중 GGT 농도의 참고구간의 설정을 위해 총 363명(남자137명, 여자 226명)의 건강한 성인을 대상으로 하였다. 2011년 3월부터 10월까지 한 대학병원의 건강증진센터를 방문하여 본 연구에 동의하고 건강검진을 실시한 총 919명(남자 519명, 여자 400명)을 대상으로 단면조사연구를 시행하였다. 남자와 여자의 혈중GGT 농도의 참고구간을 4군으로 나누어 대사증후군과 제2형 당뇨병의 발병률의 관련성을 분석하였다. 결과: 중앙 95백분위수에 의한 혈중 GGT 농도의 참고구간은 남자에서 9.0-70.6 IU/L 그리고 여자에서 4.0-31.3 IU/L였다. 참고구간 내의 혈중 GGT 농도의 사분위수군에 따른 대사증후군 유병률의 대응 위험도(95% CI)는 남자와 여자에서 각각 1.0, 3.6 (0.7-18.0), 8.8(2.0-39.1), 17.4 (4.0-75.3)와 1.0, 3.3 (0.6-16.6), 5.8 (1.2-27.3), 18.8(4.3-82.2)였고, 제2형 당뇨병에 대해서는 각각 1.0, 1.0 (0.3-3.0), 1.7(0.6-4.6), 2.6 (1.0-6.6)과 1.0, 1.6 (0.3-9.7), 1.6 (0.3-9.9), 8.0 (1.7-36.7)였다. 이러한 연관성은 나이, 알코올 섭취, BMI 및 흡연유무로 보정한 후에도 유지되었다. 결론: 혈중 GGT 농도는 참고구간내의 농도라 할지라도 대사증후군 및 제2형 당뇨병의 발병률과 용량-반응관계의 연관성을 나타냈다. 따라서 혈중 GGT 농도는 만성퇴행성질환에 대해 하나의 독립적 예측인자가 될 수 있을 것이다.

GSK 후원 해외연수 연구보고 : 불멸화된 인간 태아간세포를 이식받은 마우스 모델에서 bioluminescent 영상의 유용성

최문석 대한간학회 2007 추계 학술대회 Vol.13 No.-