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청소년들의 이종격투기에 대한 미디어 시청동기가 시청태도와 행동에 미치는 영향
공성배(Seong Bae Kong),성낙훈(Nak Hun Seong),배상일(Sang Il Bae),방환복(Whan Bog Bang),이원희(Won Hi Lee) 한국사회체육학회 2007 한국사회체육학회지 Vol.0 No.31
The purpose of this study is to investigate the effects of teenagers` viewing motivation of the mixed martial arts program on viewing attitude and viewing behavior. For this study, teenagers who have seen the mixed martial arts program in Sung-nam and Young-in City were selected as the population. Then, 336 teenagers chosen by systematic stratified cluster random sampling were analyzed. Exploratory Factor Analysis, Reliability Analysis and Multiple Regression were conducted by SPSS Window 12.0. The results were as follows:First, there were statistically significant differences in viewing attitude and viewing behavior according to the gender. Second, there were no statistically significant differences in viewing attitude and viewing behavior according to the school years. Third, there were statistically significant differences in viewing attitude and viewing behavior according to the viewing time. Fourth, there were statistically significant differences in viewing attitude and viewing behavior according to the viewing period. Fifth, it was found that viewing motivation significantly influences viewing attitude and explains 69.2%(R2=.268) of the variance. Vicarious satisfaction, entertainment pursuit motivation, time consuming motivation, and social exchange motivation which are subordinate constructs of viewing motivation have significantly a positive effect on viewing attitude in the order. Sixth, it was found that viewing motivation significantly influences viewing behavior and explains 69.3%(R2=.268) of the variance. Time consuming motivation, entertainment pursuit motivation, vicarious satisfaction, and social exchange motivation which are subordinate constructs of viewing motivation have significantly a positive effect on viewing behavior in the order. However, information pursuit motivation have significantly a negative effect on viewing behavior.
스플릿 홉킨슨 압력봉 실험장비를 이용한 암석의 동적 압열인장강도 평가에 관한 연구
양정훈(Jung-Hun Yang),안중량(Jung-Lyang Ahn),김승곤(Seung-Kon Kim),송영수(Young-Su Song),성낙훈(Nak-Hoon Sung),이연규(Youn-Kyou Lee),조상호(Sang-Ho Cho) 한국암반공학회 2011 터널과지하공간 Vol.21 No.2
본 연구에서는 스플릿 홉킨슨 압력봉 실험장비를 적용한 압열인장 실험을 수행하여, 암석의 동적인장강도 및 변형률 속도를 평가하였다. 시료가 파괴되기 전에 시료 내 동적 응력평형상태를 확보하기 위하여 펄스쉐이핑 기법으로 입사파의 증가시간을 제어하였다. 압열인장 실험시료는 Inada 화강암, Kimachi 사암, Tage응회암을 정밀하게 가공하여 제작되었다. 결과로서, Inada 화강암의 동적인장강도는 정적인장강도의 11.9배 이였으며 , Kimachi 사암과 Tage 응회암은 각각 8.5배, 9.2배로 평가되었다. 고속카메라를 이용하여 시료 내 축 하중 방향으로 발생하는 인장균열의 발생양상을 관찰하였다. In this study, we estimated the dynamic tensile strength and strain rate from Brazilian tensile test using Split Hopkinson Pressure Bar (SHPB) system. A pulse shaping technique, which controls the shape of the impact-induce incident waves, was used for achieving the dynamic stress equilibrium and constant strain rate before fracture of rock samples. Three kinds of rock type, Inada granite, Kimachi sandstone and Tage tuff were prepared as 50 mm in diameter and 26 mm in thickness. The high-speed videography system was used to observe the fracture processes of the rock samples. As the results of the tests, the ratio of dynamic tensile strength and static tensile strength was 11.9 for Inada granite, 8.5 for Kimachi sandstone and 9.2 for Tage tuff.
일축 압축에 의한 시료 파괴 시 수반되는 미소 전위에 대한 기초 연구
김종욱 ( Jong Wook Kim ),박삼규 ( Sam Gyu Park ),송영수 ( Young Soo Song ),성낙훈 ( Nak Hun Sung ),김정호 ( Jung Ho Kim ),조성준 ( Seong Jun Cho ) 한국지구물리·물리탐사학회 2007 지구물리와 물리탐사 Vol.10 No.3
As a part of basic studies on monitoring of landslides and slope stability using SP measurements, micro-electric potentials of rock samples were measured accompanied with the rock failure by a uniaxial loading test were measured. The measurement system consists of a 8 channel A/D converter with 24 bit resolution, uniaxial loading tester, strain gages and 4 sets of electrode attached to a rock sample. Rock samples of granite, limestone, and sandstone were tested. Also, mortar samples were tested in order to monitor electric-potentials of a uniform sample. Micro-electric potentials were detected in all saturated samples and the strength of them increased as the loading force increased. Sandstone samples showed the largest strength of micro-electric potential and it followed limestone and granite samples, which indicates a positive relationship with porosity of rocks. The mechanism generating these micro-electric potential can be explained in terms of electro-kinetics. In case of dry samples, micro-electric potential could be observed only in sandstone samples, where piezoelectric effect played main role due to high contents of quartz in sandstone samples. We found that biggest micro-electric potentials were observed at the electrodes near the crack surface of rock samples. This is very encouraging result that SP monitoring can be applied to predicting landsliding or to estimate collapsing position combining with monitoring of acoustic emissions.
증례 : 심근경색을 동반한 Friedreich`s ataxia 의 1 예
김영호 ( Young Ho Kim ),안우풍 ( Woo Pung Ahn ),성낙훈 ( Nak Hun Sung ),홍진숙 ( Jin Suk Hong ) 대한내과학회 1971 대한내과학회지 Vol.14 No.1
Friedreich`s ataxia is one of the rare heritable spinocerebellar degenerations, Since Friedreich`s original description of 6 cases of familial hereditary ataxia in 1863, its association with cardiac diseases and manifestations has been well known. But ther
김열자 ( Yul Ja Kim ),김영호 ( Young Ho Kim ),지정희 ( Chung Hee Chi ),안우풍 ( Woo Pung Ahn ),성낙훈 ( Nak Hun Sung ),홍진숙 ( Jin Suk Hong ),박승광 ( Seung Kwang Park ),김종설 ( Chong Shul Kim ),나도헌 ( Do Hun Rha ),함창곡 ( Ch 대한내과학회 1971 대한내과학회지 Vol.14 No.1
A case of Cushing`s syndrome in a 26 years old Korean female was presented. The patient was admitted to our hospital on December 16, 1969 because of excessive weight gain, general weakness and acne like eruptions on face. On physical examination, she was m