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초등학교 남학생의 %Fat과 BMI 수준에 따른 체력비교
강태원(Tea Won Kang),허정(Jeong Heo) 한국발육발달학회 2008 한국발육발달학회지 Vol.16 No.4
This study has attained a conclusionas a result of the study whose subjects were 387 male students who are studying at W or Y elementary school by comparing and analyzing physical fitness by groups depending on the levels of %fat and BMI of them for the purpose of helping them keep themselves in good shape. 1. For the magnitude of physical fitness by groups depending on the levels of BMI, the fat group was the first, the normal group the second and the lean group the third, and there was a statistically significant difference (p<.01). For muscle endurance, the lean and normal group were higher than the fat group, and there was a statistically significant difference (p<.01). For power strenght, the lean group was the first, the normal group the second, and the fat group the third, and there was a statistically significant difference (p<.01). For flexibility, the fat and normal group were higher than the lean group, and there was a statistically significant difference (p<.05). For the sense of equilibrium, the normal group was the first, the lean group the second, and the fat group the third, and there was no statistically significant difference. 2. For the magnitude of physical fitness by groups depending on the levels of %fat, the fat group was the first, the normal the second, the lean group the third, and there was no statistically significant difference. For muscle endurance, the lean group was the first, the normal group the second, the fat group the third, and there was a statistically significant difference (p<.01). For power strenght, the lean and normal group were higherthan the fat group, and there was a statistically significant difference (p<.01). For flexibility, the lean group was the first, the fat group the second, the normal group the third, and there was a statistically significant difference (p<.01). For the sense of equilibrium, the normal and lean group were higher than the fat group, there was a statistically significant difference (p<.05).
침몰선박의 선체부식 및 손상부재를 고려한 구조안전성 평가
김원돈(Kim Won-Don),강태원(Kang Tea-Won),이대학(Lee Dae-Hak),이승현(Lee Seung-Hyun),장우진(Chang Woo-Jin) 한국해양환경·에너지학회 2016 한국해양환경·에너지학회 학술대회논문집 Vol.2016 No.5
침몰 선박은 선체 내에 적재되어 있는 연료유와 화물의 유출로 인해 주위 환경에 많은 피해를 줄 수 있다. 침몰 선박은 대부분 해저에 침수된 상태로 있어 선체 내외부에 정수압이 작용하지도 않고, 파랑에 의한 하중도 작용하지 않아 정상 운항중인 선박들과는 다른 비교적 안정적인 하중 상태에 놓여있게 된다. 하지만 선체 자중, 화물창의 잔존화물에 의한 하중, 해저면과의 접촉상태, 조류의 흐름에 의한 하중을 받으며, 침몰이후 현재까지 계속 부식이 진행되어 선체 구조부재의 두께가 지속적으로 감소하고 있는 상황이다. 본 연구의 침몰 선박 구조 안정성 평가에서는 해당 선박의 주요 구조치수를 추정하고, 침몰 당시의 사고에 의한 선체 손상 상태와, 침몰 이후 해수에 의한 선체 구조 부재의 부식량을 추정하여 침몰선박의 선체부식 및 손상부재가 선박의 구조안정성에 미치는 영향을 해석하고 선체구조의 붕괴 가능성을 평가하였다.
RF magnetron sputter에 의해 제조된 AZO/Ag/AZO 다층박막의 Ag 두께가 전기적 광학적 특성에 미치는 영향
안진형(Jin-Hyung An),강태원(Tea-Won Kang),김동원(Dong-Won Kim),김상호(Sang-Ho Kim) 한국표면공학회 2006 한국표면공학회지 Vol.39 No.1
Al-doped ZnO(AZO)/Ag/AZO multi-layer films deposited on PET substrate by RF magnetron sputtering have a much better electrical properties than Al-doped ZnO single-layer films. The multi-layer structure consisted of three layers, AZO/Ag/AZO, the optimum thickness of Ag layers was determined to be 112Å for high optical transmittance and good electrical conductivity. With about 1800Å thick AZO films, the multi-layer showed a high optical transmittance in the visible range of the spectrum. The electrical and optical properties of AZO/Ag/AZO were changed mainly by thickness of Ag layers. A high quality transparent electrode, having a resistance as low as 6 W/□ and a high optical transmittance of 87% at 550 ㎚, was obtained by controlling Ag deposition parameters.