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중학교 사회과 교사의 동료교사 협력학습 참여 양상과 구성주의 수업실행과의 관련성
강운선(Woonsun Kang) 학습자중심교과교육학회 2019 학습자중심교과교육연구 Vol.19 No.2
이 연구는 중학교 사회과 교사들을 대상으로 동료교사 협력학습의 참여 유형을 도출하고, 참여 유형과 수업전문성과의 관련성을 밝히는데 목적을 두고 수행하였다. 이를 위하여 본 연구에서는 OECD에서 시행한 교수학습 국제조사(2013 Teaching and Learning International Survey: TALIS)자료를 활용하였다. 유형화에는 군집분석을 실시하였으며, 수업전문성과의 관련성을 밝히기 위하여 다변량분산분석을 수행하였다. 분석 결과는 1) 동료교사 협력학습 중에서 중학교 사회과 교사들의 참여수준을 비교하면 동료교사와 수업자료 교환이 상대적으로 가장 높게 나타났으며, 수업관찰과 피드백 등의 활동에는 소극적인 것으로 나타났다. 2) 동료교사 협력학습의 참여 유형을 비참여형(41.8%), 정보공유형(37.3%), 반성적 실천가 지향형(10.0%), 그리고 연구과제지향형 (10.85%)으로 분류하였다. 3) 동료교사 협력학습의 참여유형은 수업전문성에 유의미한 영향을 미치는 것으로 나타났다. The following three research questions were addressed: 1) How are participation in cooperative professional learning among middle school social studies in-service teachers? 2) Are there types of participation in cooperative professional learning(CPL) among middle school social studies in-service teachers? If so, what are the types? 3) Have the types of participation in CPL on instructional professionalism a significant effect? To gather the data, the data of this study is derived from the 2013 Teaching and Learning International Survey (TALIS) conducted by the OECD. K-means cluster analysis was performed to identify types of participation in CPL and MANOVA was analysed to investigate the effects of types of participation in CPL on instructional professionalism. The research results were following: 1) Exchanging teaching materials with colleagues is higher than any other, 40% of teachers exchanged teaching materials with colleagues. 2) The types of participation in CPL can be divided into four different categories: the Disengaged group(41.8%), the Sharing group(37.3%), the Reflective practitioner group(10.0%), and the Task-focused group(10.85%). 3) The types of participation in CPL have significant effects on instructional professionalism. The paper includes theoretical implications, a discussion of the study’s limitations and suggestions for future research
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이정기,용기중,김자륭,엄성복,Lee, Jung-Ki,Yong, Geejoong,Kim, Cha-Ryung,Eom, Seong-Bok 한국자동차안전학회 2018 자동차안전학회지 Vol.10 No.3
Greenhouse gas is the big issue of the whole world. So foreign countries, EU, USA, Japan, China and Korea made the policy for reducing greenhouse gas. For calculation of reduction, it is necessary to know the quantity of current greenhouse emission per year in Korea. It is not reflected real driving condition for measuring the Fuel economy and greenhouse gas. The subject of this study is to figure out the characteristics which influence on greenhouse gas in real driving condition. And final goal is applying the policy greenhouse emission reduction.
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김세형(Sae Hyung Kim) 한국데이터정보과학회 2019 한국데이터정보과학회지 Vol.30 No.1
이 연구의 목적은 고등학교 3학년 성별에 따라 체육수업 중 운동시간이 우울수준에 미치는 영향에서 자아존중감에 의한 자아탄력성의 조절된 매개효과를 검증하는 것이다. 연구대상은 한국청소년정책연구원에서 조사하고 공개한 ‘중학교 1학년 패널 6차년도’ 고등학교 3학년 2011명 (남학생 1014명, 여학생 997명) 이다. SPSS PROCESS macro 3.0 프로그램을 사용하였고 유의수준은 5%로 설정하였다. 남학생의 경우는 체육수업 시간에 활발한 운동으로 증진되는 자아탄력성 효과가 우울수준의 감소로 연결되기 위해서는 긍정적인 자아존중감이 필요한 것으로 나타났다. 여학생의 경우는 체육수업 운동시간이 증가함에 따라 자아탄력성은 향상되고 우울수준은 감소하지만, 자아탄력성이 자아존중감과 조합하여 주는 효과는 없는 것으로 나타났다. 또한 남학생과 여학생의 자아존중감이 우울수준에 미치는 직접적인 영향은 여학생이 남학생에 비해 자아존중감이 높을수록 우울감소 효과가 더 크게 나타났다. 이 연구로 남녀학생들에게 공통적인 정보는 유연한 자아탄력성을 가지고 체육수업 운동시간에 활발하게 참여할수록 우울수준이 낮아진다고 할 수 있다. The purpose of this study was to examine the moderated mediating effect of ego-resilience by self-esteem in the influence of exercise hours during physical education class on depression level. The subjects were 3rd year high school students 2011 (1014 male and 997 female students), which were investigated and released by the Korean national youth policy institute. The SPSS PROCESS macro 3.0 program in SPSS 24.0 program was used. The alpha level was set at 5%. In the case of boys, active exercise hours during physical education reduced depression level and interaction effect with positive self-esteem and high ego-resilience was significantly needed. In the case of female students, active exercise hours during physical education reduced depression level but interaction effect with self-esteem and ego-resilience was not significant. In addition, the direct effect of self-esteem on the level of depression was greater for girls than for boys. This study suggested that flexible ego-resilience and active participation in physical education classes made low depression level to both male and female students.
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김정오,최운,김하영,최광림,이병엽 大田産業大學校 1995 한밭대학교 논문집 Vol.12 No.0202
Continuous wave CO_2 laser beam welding was carried out to study the weldability of SAPH steel plates with different thicknesses. The effects of gap size in butt welding of SAPH steel plates was as followed; In the range of the gap size≥0.1mm, the optimal welding speed was faster than obtained from no-gap(air gap) condition, which this behavior was independent on the difference of thickness at any combination. The allowable gap size in butt welding of steel plate with different thickness was larger than with same thickness because a side of different thickness is take more extra throat thickness than same thickness. In the range of the gap size≥0.2mm, filler wire must be used for full penetration.
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Mechanical Alloying Behavior in the Immiscible Al-Bi Alloy System
Kim, H. Y.,Choi, W.,Choi, K. L. 大田産業大學校 1995 한밭대학교 논문집 Vol.12 No.0202
Mechanical alloying(MA) was carried out to investigate the MA behavior of the immiscible Al-10, 3oat% Bi alloys. By the MA processing, Al and Bi were finely and homogeneously alloyed. The Bi crystallite size decreased down to 25nm and 30nm in Al-10at% Bi and Al-30at% Bi alloys, respectively. With increasing the MA time, the hardness increased up to Hv8O, which value was larger than that obtained from the rule of mixtures. The lattice parairleter of Bl decreased about 0.27%, which shows the formation of non-equilibrium hcp Bi super-saturated solid solution. The extended solubility of Al in Bi was 1.9%.
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