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고등학생의 사회부과 완벽주의와 수면양호도가 자살생각에 미치는 영향
이상건 ( Sanggun Lee ),박주희 ( Ju Hee Park ) 대한가정학회 2019 Human Ecology Research(HER) Vol.57 No.2
This study aimed to examine the effects of socially prescribed perfectionism, sleep duration, and sleep quality on suicidal ideation in Korean high school students and to investigate if sleep duration and quality moderated the relationship between socially prescribed perfectionism and suicidal ideation. The participants of this study were 840 students (544 boys and 296 girls) from six high schools located in Seoul and Gyeonggi-do. The Suicidal Ideation Questionnaire (Reynolds, 1988) was used to measure suicidal ideation. And the socially prescribed perfectionism was assessed by the Multidimensional Perfectionism Scale (Hewitt & Flett, 1991). The students were asked to respond to a question regarding how long they slept a day as well as the Sleep Quality Scale (Yi, 2005). The data were analyzed with descriptive statistics and hierarchical regressions. The moderating effect of sleep duration and quality were investigated using the analysis procedures proposed by Baron and Kenny (1986). The results showed that the level of socially prescribed perfectionism and sleep quality increased the level of suicidal ideation. In addition, sleep quality moderated the relationship between socially prescribed perfectionism and suicidal ideation. The effect of socially prescribed perfectionism on suicidal ideation was greater when sleep quality was poor, compared to when it was good.
자외선 경화형 변성 (3,4-epoxycyclohexane)methyl 3,4-epoxycyclohexylcarboxylate 아크릴레이트의 합성
이종민,이환표,이상건,박형남,최광식,김도진,Lee, Jongmin,Yi, Hwanpyo,Lee, Sanggun,Park, Hyungnam,Choi, Kangsik,Kim, Dojin 한국재료학회 2017 한국재료학회지 Vol.27 No.4
In this study, (3,4-epoxycyclohexane)methyl 3,4-epoxycyclohexylcarboxylate acrylate was synthesized by reacting (3,4-epoxycyclohexane)methyl 3,4-epoxycyclohexylcarboxylate with acrylic acid to minimize hardening shrinkage and to improve heat resistance, which are known as disadvantages of photopolymers for 3D printing application. Urethane acrylate was synthesized by reacting 1,3,5-triazine-2,4,6-triamino alcohol, 2-hexylethyl acrylate, and isophorone diisocyanate in order to improve the mechanical properties without deteriorating the heat resistance. The physical properties before and after the synthesis of the acrylate and the mechanical properties when the urethane acrylate was applied were investigated. The reaction progress of the composite was examined by FTIR and $^{13}C$ NMR. The heat deflection temperature, flexural strength, and surface hardness of the molding were measured. The curing behavior by Photo-DSC ultraviolet irradiation was also examined.
이상건 培材大學 附設 社會科學硏究所 2005 사회과학연구 Vol.26 No.-
There has been considerable research into the perceived value, but little has been published concerning the customer perceived value in the restaurant sector. The objective of this study is to examine the relationship between perceived value and customer performance in the full-service restaurant. Canonical correlation analysis was adopted to test the relationship between two variables. Canonical analysis generated four meaningful canonical variates. This paper provides an insight into how customer performance can better be explained by the perceived value, providing more direction to restaurant marketers for improving the level of customer performance.