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창의적 문제해결력 신장을 위한 초등학교 사회과 수업에서 학습효과에 영향을 미치는 학생변인 분석
이종연 ( Jong Yeon Lee ),구양미 ( Yang Mi Koo ),남민우 ( M. Nam ),박상훈 ( S. Park ),김병수 ( B. Kim ),박도인 ( D. Park ),서정희 ( J. Seo ),고범석 ( B. Go ),진석언 ( Suk Un Jin ) 한국교육정보미디어학회(구 한국교육정보방송학회) 2007 교육정보미디어연구 Vol.13 No.1
본 연구의 목적은 초등학생들의 사전 창의적 문제해결력, 사회과 영역지식, 메타인지, 학습동기, ICT활용능력 수준이 사회과 창의적 문제해결력 신장을 위한 교육 프로그램을 경험한 후 최종적인 창의적 문제해결력 및 사회과 학업성취도에 어떠한 영향을 미치는지 분석하여, 프로그램의 개선 및 효과적인 운영의 시사점을 도출하는 것이다. 연구대상은 서울 마포구 소재 S초등학교 5학년 5개 학급이었다. 5학년 3개 반에는 창의적 문제해결력 증진을 위한 프로그램 온·오프 연계 버전이 적용되었고, 2개 반에는 오프라인 버전이 적용되었다. 학기 시작 전, 본 연구에 참여한 학생들 모두 사전 창의적 문제해결력 검사와 사회과 영역지식 검사를 받았다. 온·오프 연계 그룹 학생들은 메타인지, 학습동기, ICT활용능력 수준을 조사하는 설문지에 응답했고, 오프라인 그룹 학생들은 메타인지, 학습동기 수준을 조사하는 설문지에 응답했다. 조사가 끝난 후, 창의적 문제해결력 증진을 위한 프로그램을 포함한 5학년 2학기 사회과 수업을 진행하였고 모든 수업을 완료한 후, 사후 창의적 문제해결력 검사와 학업성취도 검사를 받았다. 처치그룹별로 단계적 회귀분석을 실시한 결과, 온·오프 연계 버전을 운영하였을 경우, 학습자들의 사전 창의적 문제해결력과 영역지식이 사후 창의적 문제해결력과 학업성취도에 공통적으로 영향력이 있는 것으로 나타났다. 즉 사전 창의적 문제해결력 수준이 높을수록 사회과 기초지식이 많을수록 사후 창의적 문제해결력이 높았고 학업성취도도 높았다. 오프라인 버전을 운영하였을 경우, 학습자들의 영역지식 수준은 사후 창의적 문제해결력과 학업성취도에 공통적으로 영향력을 미치는 것으로 나타났고, 메타인지 수준은 사후 창의적 문제해결력 수준에 영향력이 있는 것으로 나타났다. 본 연구의 결과는 우선 사회과 창의적 문제해결력 증진을 위한 프로그램의 수업효과를 증진시키기 위해서는 버전에 관계없이 학습자의 영역지식 수준을 증진시키는 방안에 주력해야 함을 시사하고 있다. 또한 온·오프 연계 버전 적용 시 학습자의 사전 창의적 문제해결력과 영역지식 수준을 고려하는 운영방안 또는 교과과정 차별화 방안과, 오프라인 버전 적용 시 학습자의 영역지식과 메타인지 수준을 고려하는 운영방안 또는 교과과정 차별화 방안을 마련하는 것이 필요하다는 것을 알 수 있도록 한다. The purpose of this study was to analyze the effects of learners variables such as entry-level creative problem solving skills, domain-knowledge, meta-cognition, motivation, and the level of ICT use on learners` final creative problem solving skills and learning achievement in social studies after running Creative Thinker Program. Creative Thinker Program was composed of 9 units reorganized by Creative Problem Solving Model. A unique online support system was developed to assist teacher`s and students` six step activities in each unit. Five 5th grade classes from an elementary schools located in Seoul were participated in this study and they were divided into two treatment groups, on- & off-line blended treatment group and off-line treatment group. On- & off-line blended treatment meant that the online support system was fully utilized. Off-line treatment meant that most options of the system were substituted by printed materials. Stepwise multiple regression analysis showed that both students` entry-level creative problem solving skills and domain knowledge were significant predictors of final creative problem solving skills and achievement in social studies when running on- & off-line blended version of Creative Thinker Program. In case of off-line version, students` domain knowledge was a significant predictor of their final creative problem solving skills and achievement in social studies. Also students` level of meta-cognition was found to be a significant predictor of their final creative problem solving skills.
Choi, Y.N.,Sungil Park, J.M.,Strassle, T.,Yeon, S.H.,Park, Y.,Lee, H. Pergamon Press ; Elsevier Science Ltd 2010 International journal of hydrogen energy Vol.35 No.23
We have studied the dynamics of the H<SUB>2</SUB> loaded THF (tetrahydrofuran) clathrate hydrate by using an inelastic neutron scattering technique. At 2K, a well defined single peak indicative of the ortho (J=1) to para (J=0) hydrogen transition is observed at 13.6meV. The neutron spectrum undergoes two distinct changes as the temperature increases. First, additional peaks appear from splitting of the rotational transition above 10K. Upon further heating, a quasi-elastic neutron scattering (QENS) signal due to hydrogen molecular diffusion through the THF hydrate crystalline lattice grows significantly above 65K. These results indicate that H<SUB>2</SUB> molecules trapped inside the THF hydrate crystalline structure undergo two distinct transformations in their dynamical behavior.
Yeon, S. J.,Chung, G. Y.,Hong, J. S.,Hwang, J. H.,Shin, H. S. Springer Science + Business Media 2017 In vitro cellular & developmental biology Animal Vol.53 No.6
<P>Ischemic stroke and cardiovascular disease can occur from blockage of blood vessels by fibrin clots formed naturally in the body. Therapeutic drugs of anticoagulant or thrombolytic agents have been studied; however, various problems have been reported such as side effects and low efficacy. Thus, development of new candidates that are more effective and safe is necessary. The objective of this study is to evaluate fibrinolytic activity, anti-coagulation, and characterization of serine protease purified from Lumbrineris nipponica, polychaeta, for new thrombolytic agents. In the present study, we isolated and identified a new fibrinolytic serine protease from L. nipponica. The N-terminal sequence of the identified serine protease was EAMMDLADQLEQSLN, which is not homologous with any known serine protease. The size of the purified serine protease was 28 kDa, and the protein purification yield was 12.7%. The optimal enzyme activity was observed at 50A degrees C and pH 2.0. A fibrin plate assay confirmed that indirect fibrinolytic activity of the purified serine protease was higher than that of urokinase-PA, whereas direct fibrinolytic activity, which causes bleeding side effects, was relatively low. The serine protease did not induce any cytotoxicity toward the endothelial cell line. In addition, anticoagulant activity was verified by an in vivo DVT animal model system. These results suggest that serine protease purified from L. nipponica has the potential to be an alternative fibrinolytic agent for the treatment of thrombosis and use in various biomedical applications.</P>
( Ji-yeon Oh ),( Jong-hwa Jang ) 융합연구학회 2018 융합연구학회지 Vol.2 No.1
The purpose of this study is to investigate the academic stress, self efficacy, burn out, social support and college life adaptation of dental hygiene students and their correlations with related factors influencing college life adaptation. A total of 265 students were selected as stratified sampling methods at the universities in which the department of dental hygiene was established nationwide. From September 1, 2015 to October 22, 2015, the self report questionnaire was used. The main variables were college life adaptation, academic stress, self efficacy, burn out, social support, and analyzed using SPSS 21.0. College life adaptation was 5.17 out of 9 points, academic stress was 2.88 points out of 6 points, self efficacy, burn out, and social support were 3.35, 2.60, and 3.54 out of 5, each respectively. Self efficacy and stress due to task and class were significant influences on individual-emotional adaptation in college life adaptation. In the case of college environment adaptation, exhaustion, self efficacy and social support were significant influencing factors. In the case of social adaptation, self efficacy and social support were significant influencing factors. Overall, academic stress and college life adaptation were closely related, and social psychological factors such as burn out, self efficacy and social support were mediated. Therefore, it is suggested that it should be applied to college education in order to increase adaptation of dental hygiene students, to reduce academic stress and burn out, and to develop intervention strategies that can enhance self efficacy and social support.