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물리 문제 풀이에서 나타나는 학생들의 뇌활성화 특성 연구
국화,류광수 한국물리학회 2022 새물리 Vol.72 No.2
본 연구에서는 물리 문제 풀이에서 나타나는 학생들의 뇌활성화 특성을 알아보기 위해 실시간으로뇌활성화 변화를 측정할 수 있는 기능적 근적외선 분광법(fNIRS)을 사용하였다. 본 연구를 위해서 물리문제는 난이도를 고려하여 10개의 문제를 선별하였으며, 연구대상은 충북 소재 물리교육과 학부생 7명으로하였다. 학생들의 물리문제 풀이 과정에서 나타나는 뇌 활성화 변화량을 관측한 결과, 문제 풀이를 시작한후 학생들의 뇌활성화 변화량이 크게 증가하다가, 문제 풀이가 끝난 후부터는 뇌활성화 변화량이 급격하게감소하는것을 알 수 있었다. 흥미롭게도, 각 학생별로 문제의 난이도와 뇌활성화 변화량 사이의 관계를분석한 결과, 대부분의 학생인 경우 문제의 난이도가 높을수록 뇌활성화 변화량이 비례하여 증가함을알 수 있었다. 이는 어려운 문제일수록 학생들의 뇌에서 일어난 신경활동이 매우 활발하게 일어남을 말한다.
Linking Cognitive Team Diversity to Team Creativity: A Moderated Mediation Model
국화,김형은 한국인사관리학회 2021 조직과 인사관리연구 Vol.45 No.2
Even though many scholars and practitioners have praised the merits of team diversity on team creative outcomes, organizations often fail to reap the benefits from diversity, or even suffer losses. The inconsistent consequences of diversity have prompted researchers to resolve this puzzle, shifting the direction of research toward identifying mediating mechanisms and/or boundary conditions of the relationship between diversity and creativity. In this paper, we proposed a model to test the effect of cognitive team diversity on team creativity through team information elaboration, and further examined the conditional effect of team-member exchange (TMX) on aforementioned mechanism. We tested our hypotheses with multi-source data composed of 62 teams (293 respondents) in Korean electronic and construction companies. Results demonstrated that cognitive team diversity was positively related to team creativity, mediated by team information elaboration. In addition, findings also showed that TMX played an important moderating role such that it amplified the indirect positive effect of cognitive team diversity on team creativity. Drawing upon the findings of this research, we discussed theoretical and managerial implications, limitations, and directions for future research.
차별화된 협동로봇 형태 디자인 개발에 관한 연구 (형태분석법 적용 가능성을 중심으로)
국화연,홍성수 한국로봇학회 2020 로봇학회 논문지 Vol.15 No.2
Collaborative Robot (Cobot) that can collaborate with humans by fusion with many advanced technologies among industrial robots in the industrial field are attracting attention. In this study, the engineers of Small and Medium Enterprises can directly participate in the cobot design, and ultimately, the possibility of deriving the shape design of the differentiated cobot was studied. The method applied to derive the shape design of differentiated cobot is ‘Morphological Analysis’. First, the design elements of the form of cobots were derived as ‘Link’ and ‘Joint’. In addition, by analyzing the image form of the Link and Joint of the existing cobot, a new form element of the Link and Joint was proposed. In order to quantitatively identify the most discriminating cobot shape design, FGI (Focus Group Interview) was conducted to derive image types of 4 Link and 3 Joint. Then, the most important ‘Shape Combination’ was carried out in morphological analysis, and 12 new cobot shape designs were drawn. Through this, the applicability of the morphological analysis method in the derivation of differentiated cobot shape design was examined.