http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
플립드러닝 기반 문제중심학습이 수학과 학업 성취도와 태도에 미치는 효과
장유현 ( Jang Yoo Hyun ) 대경교육학회 2022 교육학논총 Vol.43 No.2
본 연구는 플립드러닝 기반 문제중심학습을 적용한 수업이 학습자들의 수학과 학업성취도 및 수학적 태도에 미치는 영향을 살펴보고 이러한 수업에 대한 학습자들의 만족도 및 인식을 살펴보는 데 주요 목적이 있다. 이를 위하여 D시에 소재한 P초등학교 5학년의 2개 학급을 실험집단과 비교집단으로 선정하였다. 실험집단은 플립드러닝 기반 문제중심학습을 6주간 총 24차시에 걸쳐 적용하였으며 통제집단에는 실험집단과 동일한 단원, 차시를 교사의 설명식 수업방법으로 진행하였다. 플립드러닝 기반 문제중심학습의 효과성을 확인하기 위해 수업실시 전후로 수학과 학업성취도와 수학적 태도 사전-사후검사를 실시한 후 순위 공변량 분석(ranked ANCOVA)과 공변량 분석 (ANCOVA)을 통해 분석하였다. 본 연구를 통해 밝혀진 결과 첫째, 실험집단과 비교집단 간 학업성취도에 있어 통계적으로 유의미한 차이가 있는 것으로 나타났다. 둘째, 수학적 태도 하위 요인 중 수학 흥미 요인, 학습태도 요인, 가치 요인, 학습 의지 요인, 내적 동기 요인, 효능감에서 두 집단간 유의미한 차이가 있는 것을 확인하였다. 본 연구의 결과를 종합해 볼 때, 플립드러닝 기반 문제중심학습은 초등학생들의 학업성취도와 수학적 태도를 향상시키는데 긍정적으로 기여할 것으로 기대된다. The main purpose of this study is to examine the effects on learners’ learning achievement and attitude in mathematics. The research also examined students’ satisfaction and perception toward flipped learning based PBL. The subjects of this study were two 5th grade classes from an elementary school in Daegu Metropolitan City. The classes were assigned into a treatment group and a control group. A treatment group which applied flipped learning based PBL had 17 students. A control group which applied the traditional teaching method was comprised of 15 students. Flipped learning based PBL was implemented for 6 weeks in treatment group. A ranked analysis of covariance(ranked ANCOVA) and analysis of covariance(ANCOVA) were conducted to examine the effects of the students’ achievement and attitude in mathematics between the two groups. The results were as the follow. First flipped learning based PBL had positive effect on the improvement of learning achievement in mathematics compared to the traditional teaching method. Second, flipped learning based PBL had a positive effect on improving students’ attitude towards mathematics compared to the traditional teaching method. Among sub-categories of mathematical attitudes, all factors except for recognition-desire showed significant differences between treatment and control group. In addition, treatment group showed higher scores for all attitude variables than control group. Third, it was found that learners who participated in the flipped learning based PBL showed high satisfaction with the course. The results of this study show that flipped learning based PBL significantly improve students’ learning achievement and attitude in mathematics. Further research is required to develop more concrete strategies and guidelines to support teachers to apply flipped learning based PBL in their classrooms.
장유현(Jang, You-Hyun) 한양대학교 관광연구소 2018 觀光硏究論叢 Vol.30 No.2
기후변화 및 광범위한 환경영향과 그로인한 사회적 파장에 대비한 세계 관광부문의 지식과 적응능력은 아직 충분치 않다. 또한 이와 관련되어 학계에서 그동안 생태 관광 등 지속가능한 관광의 한 축으로 저탄소 녹색관광이라는 정책적인 용어를 여과없이 받아들이는 결과를 초래했다. 따라서 본 연구에서는 저탄소 녹색관광의 개념과 의의에 대해 학문적인 정의와 개념정립에 앞서, 현장에서 직접 해당 사업을 실행하고 있는 사업자의 관점에서 녹색관광의 개념과 그 의의에 대해 정립하고자 하였다. 근거이론적 접근법을 이용해 녹색관광 사업현장에서의 실무자의 경험에서 우러나오는 즉, 실체적 영역에 근거한 이론을 생성하고자 하였다. 녹색관광 사업 환경과 조건하에 놓인 인간에 투영된 사회심리 및 경험을 바탕으로 상징적 상호주의에 근거하여 녹색관광의 제 현상에 대한 그들의 해석과 수용현상 그리고 이런 현상에서 도출되는 개념을 표집, 범주화하는 접근방법을 통해 저탄소 녹색관광 사업의 현장적인 관점에서의 정의와 의의를 찾아보고자 하였다. This Study intended to set up the concept of the Low Carbon Green Tourism and its meaning from the standpoint of the practitioners who were working on the site. For the tourism division, it is not enough to cope with the widespread effect of climate and environmental change. Scholars have used the term ‘Low Carbon Green Tourism’ as a similar terminology of ecological tourism or sustainable tourism without scholarly doubt and consideration. Accordingly, this study tried to find the concept and meaning by the usage of the Grounded Theory methodology which is accepted as a useful approach to search out for the substantial concept in the real world. To attain this purpose, this study has interviewed 12 practioners who were working at Korea Tourism Organization. This study focused on the phenomenon which were expressed through the indepth interview with these practioners. Under the circumstance of the policy practition of the Green Tourism, they all have had similar experience and understanding of Green Tourism as a new political business and its meaning for the tourism industry. Although this study was not so complete as a scholarly paper, it was worthwhile to try to approach and seminal try to fine the concept and meaning of comparably new tourism.
최정일,장유현,이재원,이방연,Choi, Jeong-Il,Jang, Yu-Hyun,Lee, Jae-Won,Lee, Bang-Yeon 한국건설순환자원학회 2015 한국건설순환자원학회 논문집 Vol.3 No.1
현무암섬유는 높은 인장강도와 콘크리트와 유사한 밀도를 갖기 때문에 콘크리트 보강 섬유로서 장점을 갖고 있다. 이 연구에서는 현무암섬유의 부착 특성과 섬유 배향각에 따른 현무암섬유의 인장 강도 특성을 조사하였다. 이를 위하여 현무암섬유와 폴리비닐알코올섬유에 대한 섬유 인발 실험을 수행하였고, 현무암, 폴리비닐알코올, 폴리에틸렌섬유에 대하여 섬유 배향각에 따른 인장 강도를 측정하였다. 실험 결과 현무암섬유의 화학적 부착, 마찰 부착, 미끌림 경화 계수는 폴리비닐알코올섬유와 비교하여 각각 1.88, 1.03, 0.24배로 나타났다. 현무암섬유의 배향각에 따른 강도 감소 계수는 폴리비닐알코올섬유의 9배, 폴리에틸렌섬유의 3배로 나타났다. Basalt fiber has many advantages as a reinforcing fiber such as high tensile strength and similar density to concrete. This study investigated the bonding property and the effect of fiber orientation on tensile strength of basalt fiber. Single fiber pullout tests for basalt and polyvinyl alcohol (PVA) fibers were performed to evaluate the bonding property between basalt fiber and mortar. And then tensile strength of basalt, PVA, and polyethylene (PE) fibers according to fiber orientation were measured. From the test results, it was exhibited that the chemical bond, frictional bond, and slip-hardening coefficient of basalt fiber were 1.88, 1.03, 0.24 times of PVA fibers, respectively. And the strength reduction coefficient of basalt fiber was 9 times of PVA fiber and 3 times of PE fiber.
자색 마령서 에탄올 추출물의 비만 및 고지혈증 억제효능
윤성수,이연희,이은옥,이효정,장유성,이근성,원숙현,임학태,김성훈,Yoon, Sung-Soo,Lee, Yun-Hee,Lee, Eun-Ok,Lee, Hyo-Jung,Jang, Yu-Sung,Lee, Keun-Sung,Won, Sook-Hyun,Lim, Hak-Tae,Kim, Sung-Hoon 대한동의생리학회 2007 동의생리병리학회지 Vol.21 No.3
This experimental study was performed to evaluate the effects of ehtanol extract of Purple Solanum tuberosum L(EPSTL) on obesity and hyperlipidemia in rats induced by high fat diet. Sprague-Dawley rats were divided into normal group, control group, EPSTL (100 mg/kg and 200 mg/kg) treated group. EPSTL was orally administered to the obese rats by high fat diet for 6 weeks. The effect of EPSTL on obesity and hyperlipidemia were examined in vitro and in vivo as follows : EPSTL effectively inhibited the differentiation of 3T3-L1 adipocytes in a concentration dependent manner. EPSTL significantly lowered body weight of rats fe high fat diet for 6 weeks from 4 weeks treatment compared with untreated control. EPSTL significantly reduced the weight of retroperitoneal fat only at 100 mg/kg and epididymal fat pad in rats fed high fat diet for 4 weeks at 100 and 200 mg/kg. EPSTL significantly reduced the level of triglyceride at 200 mg/kg, while EPSTL tended to lower the levels of total lipid and phospholipid in rats fed high fat diet for 4 weeks with no significance. EPSTL significantly attenuated the level of total cholesterol, LDL and atherosclerosis index (Al) as well as increased the level of HDL at 200 mg/kg. EPSTL significantly reduced the levels of total lipid and triglyceride of hepatic tissues in rats fed high fat diet for 4 weeks at 200 mg/kg. EPSTL significantly lowered the level of insulin, while it did not affect leptin compared with untreated control. Taken together, these results suggest that EPSTL can be used for the treatment or prevention of hyperlipidemia and obesity.