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대학생의 TOEIC 듣기실력 향상을 위한 듣기전략 지도의 효과
유미란 ( Yoo Mi-ran ) 글로벌영어교육학회(구 호남영어교육학회) 2019 Studies in English education Vol.24 No.4
The aim of this paper is to explore the effects of listening strategy used in the instruction of college students while undergoing the TOEIC listening test. It will also discuss relevant and effective learning strategies that can be applied in the classroom. The participants in this study were 70 college students participating in an intensive TOEIC course for a period of four weeks at a college in Gumi. The students were divided into two groups: control(n=33) and experimental (n=37). Three sets of TOEIC test scores and two different questionnaires were used in the testing process. The major results of this study were as follows. First, the students tended to use cognitive strategies rather than metacognative strategies during the TOEIC test. Secondly, the students applied commonly used strategies after the new listening methods were introduced and they considered the strategies in a positive way. Thirdly, the use of different listening strategies resulted in improved listening comprehension scores. Lastly, the listening strategies used did not show a statistical effect on the students listening proficiency. These findings demonstrate that providing effective strategies such as cognitive and metacognitive strategies which were proved as an useful method in listening acquisition will be a good way for students to improve their listening skills.
화학 흡수를 이용한 KOH 수용액의 이산화탄소 포집 성능에 관한 연구
유미란(Mi Ran Yoo),한상준(Sang Jun Han),신지윤(Ji Yoon Shin),위정호(Jung Ho Wee) 大韓環境工學會 2012 대한환경공학회지 Vol.34 No.1
수산화칼륨(KOH) 수용액을 이용한 CO₂ 포집에 관한 연구를 수행한 결과 K2CO₃ 생성 및 KHCO₃가 생성되는 화학흡수 반응이 순차적으로 일어났고 그 후 CO₂ 물리흡수가 일어남으로써 전 반응이 종료되었다. KOH가 한계 반응물인 회분식 흡수 에서 K2CO₃의 생성 속도는 OH- 농도에 관해 1차 반응이며 KHCO₃ 생성 속도는 CO₃ 2- 농도에 0차 반응으로 흡수 속도는 0.18 gCO₂/min으로 계산되었고 이 값은 K2CO₃ 수용액에서의 흡수 속도와 일치한다. 5% KOH 흡수제의 CO₂ 포집율의 경우 1구간 에서 57%, 2구간에서 12% 이었으며 전체 19%로 측정되었다. KOH 흡수제의 CO₂ 포집양은 이론값보다 2~3% 정도 작았는데 그 이유는 KHCO₃ 이외 K2CO₃·KHCO₃·1.5H₂O가 생성되는 부 반응이 동반되기 때문으로 판단된다. The present paper investigates the performance of the KOH aqueous solution as an absorbent to capture carbon dioxide (CO₂). The chemical absorption was carried out according to consecutive reactions that are generated in the order of K2CO₃ and KHCO₃. The overall absorption was completed with following the physical absorption. When the absorption was conducted with the KOH as the limiting reactants in batch a reactor, K2CO₃ production rate was the 1st order reaction for OH-. However, KHCO₃ generation reaction was independent of the CO₃ 2- concentration and the rate was calculated to be 0.18 gCO₂/min for all KOH absorbents, which is the same value of the reaction rate using K2CO₃ aqueous solution as the absorbents. The overall CO₂ capture ratio of the 5% KOH absorbent was estimated to be 19% and the individual value in section 1 and 2 was 57 and 12%, respectively. The amount of CO₂ absorbed in the solution was very slightly less than the theoretical value, which was ascribed to the side reaction that produces K2CO₃·KHCO₃·1.5H₂O during the reaction and the consequent diminish in CO₂ absorption in the KOH solution.
급성 췌장염으로 내과계 중환자실에 입원한 환자들의 급성호흡곤란 증후군 발생에 연관된 인자에 관한 연구
유미란 ( Mi Ran Yoo ),고윤석 ( Youn Suck Koh ),임채만 ( Chae Man Lim ),이문규 ( Moon Gyu Lee ),이홍재 ( Hong Jae Lee ),이무송 ( Moo Song Lee ),안종준 ( Jong Jun An ),이성구 ( Sung Koo Lee ),김명환 ( Myung Hwan Kim ),이상도 ( Sang 대한결핵 및 호흡기학회 1997 Tuberculosis and Respiratory Diseases Vol.44 No.4
내과계 중환자실에 입원한 객혈 환자들에 있어 APACHE 3 점수 체계의 예후적 가치에 관한 연구
양성연(Sung Yeun Yang),고윤석(Youn Suck Koh),임채만(Chae Man Lim),이무송(Moo Song Lee),유미란(Mi Ran Yoo),최강현(Gang Heun Choi),이상도(Sang Do Lee),김우성(Woo Sung Kim),김동순(Dong Soon Kim),김원동(Won Dong Kim) 대한내과학회 1997 대한내과학회지 Vol.53 No.3
Background: Massive hemoptysis is one of the major medical emergency with high risk of mortality. Though the best predictor of mortality associated with hemoptysis appears to be the amount of bleeding within the first 24 hours, catastrophic hemorrhage could be occurred to the patients who were apparently in a stable condition with scanty hemoptysis at the time of admission. We evaluated APACHE III score system to find if it could be a prognostic index that can predict the mortality of the patients with hemoptysis. Methods : We identified all the patients who had admitted with hemoptysis in the Medical Intensive Care Unit of Asan Medical Center between May 25, 1989, and July 31, 1995. A retrospective analysis was done in 66 patients with hemoptysis on APA- CHE III score. Results: The overall mortality rate was 17.4% (12/69). In univariate analysis of possible prognostic factors, independent predictors of mortality were age(P=0.016), amount of hemoptysis(P=0.012), AaDO2 (P=0.017), requirement of transfusion(P=0.036), mechanical ventilatory care(P<0.05) and APACHE III score(P=0.02), In multivariate analysis with sex, age, amount of hemoptysis, AaDO2, requirement of transfusion and APACHE III score, APACHE III score was the only independent predictor of mortality(P=0.015, odd ratio=19.3, 95% confidence interval, 3.4 to 249.7) Conclusion: APACHE IU score may be a clinically significantly important independent predictor of outcome in the patients with hemoptysis. In addition, invasive procedure, such as bronchial artery embolizaticn or operation, could be considered in advance in the patients with more than 30 points of APACHE III.