• Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
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• 2017.11a
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• pp.48-51
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• 2017

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.10a
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• pp.29-31
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• 2012

사고선박을 예선(또는 예인선)을 이용하여 안전한 곳으로 이동시키기 위해서는 예인소요마력을 계산하여 예선의 척수를 결정해야 한다. 예선의 신속한 투입은 잠재적인 환경오염 및 사고선박의 2차적인 피해로의 확산을 예방할 수 있다. 하지만, 국내에는 아직까지 사고선박의 형태, 크기, 외력조건에 따라 지원되어야 할 예선의 척수 산정 및 최적의 배치방법에 대한 정량적이고 체계적인 결정 시스템이 없는 실정이다. 따라서 본 연구에서는 실선을 활용한 소요마력 측정을 위한 실험방법의 제시와 상황에 따른 예선의 다양한 배치에 따른 장력 측정 방법을 제시하고, 이러한 실험을 통하여 얻은 결과를 이론계산 결과와 비교 분석함으로써 추후 구축하게 될 사고선박 예인지원시스템 프로그램 개발을 위한 이론식을 정립하고자 한다.

• Korean Chemical Engineering Research
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• v.56 no.6
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• pp.841-855
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• 2018

The purpose of this study is to estimate the available potential heat source for heat pump in the district heating supply area in the city. Unused energy potentials were estimated and integrated based on open source based data. In particular, geographical spatial analysis of recoverable heat energy density and heat demand in the heat source area of large retailers and public sauna facilities in the DH network located in the southern part of the metropolitan area (Pyeongtaek-si) was conducted. As a result of the study, the DH network area had a total potential energy of 1,741.7 toe/year for the two heat sources of large retailers and public saunas. It is estimated that 1,006.9 toe/year, which is 57.8% of the total, can be linked to the district heating. The large retailers showed a positive correlation with the floor area and energy use of 0.4937. The recoverable energy intensity was estimated to be $0.0017toe/m^2$ per unit area and $0.0069tCO_2/m^2$ for greenhouse gas emissions. In addition, public saunas were analyzed by comparing the empirical case with the theoretical calculation, and it was estimated that energy conservation estimate of 80% was $0.0315toe/m^2$ per bath area and $0.1183tCO_2/m^2$ for greenhouse gas emissions. The total potential energy amount of this area was positively correlated with the heat demand of apartment house by administrative district, and it was confirmed that it had a relatively high potential energy especially in traffic and commercial center.

• Korean Journal of School Psychology
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• v.11 no.1
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• pp.253-274
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• 2014

The present study classified groups based on latent profile of self-determination motivation(amotivation, external motivation, intrinsic motivation), and examined the determinants for each group. The data was collected through panel data of Korea Education Longitudinal Study(KELS), total 5,459 participants who answered questionnaires of self-determination motivation of two times both second grade of middle school and second grade of high school. To identify the change motivational type, standardized residual was conducted using SPSS 17.0., and the latent classes for the change of motivational type was investigated using M-Plus in the frame work of Latent Profile Analysis(LPA). The results indicated that five groups(increase of self-determination, self-determination maintenance, self-determination developmental delay, elf-determination confusion, decrease of self-determination group) were classified based on latent profile. In addition, parental control, academic self-concept, teacher-student relationship, test anxiety, avoidance orientation, gender, father's education, and income were significantly related to each group. Lastly, the implications for directions of the adolescent counseling, limitations and future research are discussed.

• Journal of the Korea Convergence Society
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• v.10 no.2
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• pp.325-330
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• 2019

The purpose of this study was to verify the physical activity planning behavior theory model of rehabilitation center users. For this purpose, a questionnaire survey was conducted for sports athletes who visited the sports rehabilitation hospital and rehabilitation center in the metropolitan area. A total of 203 questionnaires were used for the actual analysis. The collected data were analyzed using SPSS 18.0 and AMOS 18.0. In this way, we confirmed that intention has a significant direct effect on the behavior in the application of the physical activity planning theoretical model based on the social cognitive theory of rehabilitation center participants.

• Journal of Gifted/Talented Education
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• v.23 no.6
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• pp.1117-1145
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• 2013

Research on entrepreneurial giftedness is in its initial stage and the importance is increasing these days. The purpose of this article is to establish a foundation of entrepreneurial giftedness research by conceptualizing the concept and characteristics of entrepreneurial giftedness. The author reviewed prior research on entrepreneur and entrepreneurship, potential entrepreneur, gifted youth in invention, and entrepreneurial gifted youth, and proposed a new perspective on entrepreneurial gifted youth based on the findings from the review. Entrepreneurial giftedness proposed in this study is someone who is risk-taking to achieve opportunities and innovation and who has potential to be competent in managing resources. The author also proposed that entrepreneurial giftedness study needs to focus on developmental characteristics, management ability, and practical intelligence. Finally, based on the findings from previous research on entrepreneurial giftedness, environmental and personality characteristics, temperament and character, cognitive traits, and vocational interest of entrepreneurial giftedness are discussed. Implications and further research directions were discussed.

• Journal of Educational Research in Mathematics
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• v.15 no.1
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• pp.57-74
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• 2005

The aim of this study is to reflect Vygotsky's theory of Zone of Proximal Development and other scholars' scaffolding theories emboding the theory and to examine the effects of mathematics instruction by scaffolding. The subjects of this study consist of 8 fifth graders attending S elementary school which is located in San-Chung county. The teaching-learning processes were videotaped and analysed according to scaffolding components. The results between pretest and posttest regarding to fraction were compared and the responses of students to a questionnaire on the mathematical attitude before and after the teaching experiment. It concludes that mathematics instruction by scaffolding was effective to improve students' mathematical learning ability and positive mathematical attitude.

• 한국정보교육학회:학술대회논문집
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• 2007.01a
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• pp.173-180
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• 2007

최근 모바일 기기의 활성화에 따라 M-learning (Mobile learning)이 활성화되고 있다. M-learning을 기반으로 한 코스웨어나 모듈 설계 시 학습자의 적극적 참여와 의미 있는 상호작용의 기회 제공과 실제적 환경에서의 교육활동을 지원하는 것에 초점을 맞추어야 한다. 근접발달영역이론 (Zone of Proximal Development : ZPD)이란 독자적으로 문제를 해결함으로써 결정되는 실제적 발달수준과 성인의 안내나 보다 능력 있는 또래들과 협동하여 문제를 해결함으로써 결정되는 잠재적 발달수준간의 거리이다. 한편, 스캐폴딩은 학습자의 근접발달영역을 변화시키며, 학습자가 스스로 학습할 수 있도록 도와주는 구체적인 방식이라 할 수 있다. 또한 스캐폴딩 (Scaffolding)은 학습자가 구조를 조직하고 새로운 지식을 구성하도록 교수자 또는 촉진자가 도와주면서 교수자와 학습자간에 상호작용하는 과정이다. 본 연구에서는 근접발달영역이론을 이용하여 모바일로 교사가 학습자에게 스캐폴딩을 제공하는 수업모형을 제안한다. 본 모형의 특징은 다음과 같다. 첫째, 문제해결을 위한 스캐폴딩만이 아니라 문제 해결 후 격려 스캐폴딩을 제공하여 학습력 강화가 이뤄지도록 하였다. 둘째, 교사와 학습자 사이에 다양한 스캐폴딩을 제공하여 상호작용을 강화하였다. 셋째, 자신에게 맞는 개별학습, 반복 학습이 가능하고 자기 주도적 학습이 강화되도록 하였다.

• Journal of the Korean Society of Child Welfare
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• no.40
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• pp.41-71
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• 2012

The purpose of this study is to examine longitudinal impacts of various factors on happiness in primary school children. Specifically, attachment theory and ecosystems perspective were utilized for the purpose of this study. We used Korea Youth Panel Survey, which is a 5-year longitudinal data collected from fourth grade in elementary school to second grade in middle school Latent growth model was employed as the analytic method. The findings of this study are as follow: first, academic achievement, self-esteem, parent attachment, peer attachment, teacher attachment, and community attachment all decreased over the 5-year study period. Also, the intercept and the slope variance of variables were found to be statistically significant. This means that there are significant differences in the intercept and the slope of individuals. Second, self-esteem, parent attachment, and peer attachment were found to have cross-sectional influences on happiness. This means that self-esteem, parent attachment, and peer attachment are positively associated with happiness at the intercept. Also, self-esteem, parent attachment, teacher attachment, and community attachment were found to have longitudinal influences on happiness. This means that the higher levels of community attachment at the intercept is associated with slower the rate of decrease in happiness at the slope. In addition, faster rates of decrease in self-esteem, parent attachment, teacher attachment, and community attachment are associated with faster the rate of decrease in happiness. Third, this study conducted multiple group analysis with gender. The findings of this analysis revealed no significant differences in analytic models between males and females. Based on these findings, theoretical and practice implications with regard to happiness in primary school children are discussed.

• Proceedings of The Korean Society of Health Promotion Conference
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• 2010.05a
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• pp.148-148
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• 2010

본 연구는 서울시 지역주민을 대상으로 스트레스, 우울, 문제음주 간의 인과관계를 검증하고자 시도되었다. 본 연구는 서울시 S구이며, 전체 17개동에서 만 19세 이상인 남녀 주민을 층화집락추출법을 통해 표집된 1234명을 대상으로 하는 면접식 단면조사연구를 수행하였다. 구조방정식 모형을 사용하였으며, 측정모형에서 우울, 알코올장애의 내생잠재변수와 외생잠재변수인 스트레스 및 인구학적 변수(성, 연령, 결혼상태)를 이론변수로 설정하여 이들 간의 상관관계를 추정하였다. 또한 문제음주를 최종내생변인으로 우울을 매개변인으로 설정한 상태에서 경로분석을 실시하여 각 변인들의 상대적 중요성에 대한 평가를 시도하였다. 문제음주에 영향을 미치는 변수는 여성보다는 남성이($\beta=-6.64$, p < .001), 연령이 낮을수록($\beta=-.08$, p < .001), 스트레스가 높을수록($\beta=-.08$, p < .001), 미혼이 기혼($\beta=-1.15$, p < .05)의 순으로 경로계수가 유의하였다. 우울에 미치는 영향력은 스트레스($\beta=-.56$, p < .001)와 문제음주정도($\beta=-.15$, p < .001)의 순으로 경로계수가 유의하였다. 이상과 같이 우울이 직접적으로 문제음주에 영향을 주기보다는 스트레스로 인하여 문제음주가 유발될 수 있고 문제음주를 경유하여 우울에 영향을 미치는 것으로 드러났다. 이상의 연구결과를 종합해 볼 때 문제음주는 스트레스와 우울과 관련성이 크므로 우선적으로 스트레스를 적극적으로 관리하는 것이 중요하다. 또한 알코올과 관련한 통제정책으로 절대적인 음주량을 감소시키는 것이 필요하며, 문제음주자를 조기 발견하여 정신건강에 문제로 발전하지 않도록 하는 예방프로그램의 개발이 시급하다 하겠다.