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이종남,김광배 ( Jong Nam Lee,Kwang Bea Kim ) 한국주조공학회 1982 한국주조공학회지 Vol.2 No.1
N/A In order to investigate the relationship between the thermal characteristics of the various molds as green sand mold, dry sand mold, CO₂ mold and shell mold, and the solidification characteristics of molten metal, the thermal analysis of rarious molds and melt were performed. The structure of Al-Castings was a/so observed. Results obtained in this experiment were as follows : 1) The heating rate of the molds was increased in the order of green sand mold, CO₂ mold, dry sand mold and shell mold, On the other hand the solidification time of the melts was shortened in the order of dry sand mold castings, CO₂mold castings, green sand mold castings and shell mold castings. 2) The arrest temperature period in the heating curve of the green sand mold was resulted from the eraporation of moisture contained in mold, which was tranafered to the outer side of the mold. 3) The temperature fluctuation of the melt in the shell mold was considered to be resulted from the combution heat of resin contained in the mold. 4) The amounts of heat absorption of the molds were increased in the order of dry sand mold, CO₂mold, green sand mold and shell mold. 5) The higher the solidification rate was, the longer was its shrinkage pipe and the finer its grain size.
연구논문 : 학업스트레스와 또래 동조성이 청소년의 사이버 비행에 미치는 영향에 관한 연구: 언어비행과 성비행을 중심으로
이종남 ( Jong Nam Lee ) 극동대학교 사회복지연구소 2015 글로벌사회복지연구 Vol.5 No.1
본 연구는 고등학생을 대상으로 학업스트레스와 또래 동조성이 청소년의 사이버 비행에 미치는 영향에 관하여 조사하였다. 본 조사는 서울 및 수도권 학교에 재학 중인 고등학생 202명을 대상으로 하였으며, SPSS/WIN 18.0통계프로그램을 이용하여 학업스트레스, 또래 동조성, 사이버 비행의 척도를 통해 빈도분석, 기술통계 분석, 상관관계분석, 다중회귀분석 등을 실시하였다. 연구의 결과는 청소년의 학업스트레스, 또래 동조성이 사이버 비행에 영향을 미치는 것으로 나타났다. 학업스트레스의 하위변수인 시험 및 성적스트레스가 사이버 비행의 하위변수인 성 비행에 정적인 영향을 미치는 것으로 나타났으며, 또래 동조성이 사이버 비행의 하위변수인 언어비행에 정적인 영향을 미치는 것으로 나타났다. This study is subject to the academic stress and peer conformity of youth and high school students were investigated the impact of cyber deliquency. The survey was targeted to 202 people attending high school in Seoul and metropolitan school, using SPSS/WIN 18.0 statistics program frequency analysis, correlation analysis, multiple regression analysis on acadimic stress, peer conformity and cyber deliquency was performed. Results of study showed that the academic stress, peer conformity of the youth cyber attecting the deliquency. Sub-variabe testing, and sexual stresses of academic stress showed a positive effect on the variabe sub-deliquency of the cyber deliquencyht, peer conformity. This showed a positive effect on the variabe sub-language of deliquency.