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여자축구동호인의 여가동기, 신체적 자기효능감, 여가만족의 관계
박광범(Park, Kwangbeom),이철원(Lee, Chulwon),서광봉(Suh, Kwangbong) 한국여가레크리에이션학회 2021 한국여가레크리에이션학회지 Vol.45 No.2
The purpose of this study is to analyze the relationship between leisure motivation, physical self-efficacy, and leisure satisfaction of Womens football players. In order to achieve the purpose of this study, 291 questionnaires were surveyed. Frequency analysis, correlation analysis, confirmatory factor analysis and structural equation model analysis were conducted by using SPSS 22.0 and AMOS 20.0. The results of this study were as follows. First, leisure motivation partially had a significant effect on physical self-efficacy. Second, physical self-efficacy had a positive effect on leisure satisfaction. Third, leisure motivation partially had a significant effect on leisure satisfaction. In conclusion, this study shows that leisure motivation and physical self-efficacy are important factors in the leisure satisfaction of Womens football players. Recommending football activities to women with physical motivation related to physical fitness improvement and women with confidence in their bodies can be a solution to the shortage of Womens football players pointed out as a problem in this study. In the future, it is judged that various studies targeting womens football players are needed for the development of domestic womens football.
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권도연(Doyeon Kwon),정창규(Changkyou Jung),박광범(Kwangbeom Park),이철균(Choul-Gyun Lee),이진원(Jinwon Lee) 한국생물공학회 2011 KSBB Journal Vol.26 No.2
The aim of the study was to optimize harvesting method for concentrating microalgae from microalgae mass culture. It is well known that the mass density of microalgae is usually very low and these are small size (5-20 μm) in the culture medium. It is essential that microalgae is harvested and concentrated economically for economical biodiesel production from microalgae. In this study, to determine optimized conditions for microalgae harvesting by chemical flocculation. Flocculation of three algae, Chlorella ellipsoidea, Dunaliella bardawil, and Dunaliella tertiolecta, was performed using various chemical flocculants, such as inorganic flocculants (aluminium sulfate, aluminium potassium sulfate, ferrous sulfate, ferric sulfate, ferric chloride, calcium hydroxide, sodium carbonate, sodium nitrite, and sodium aluminate), organic flocculant (polyacrylamide), and biopolymer flocculants (chitosan and starch). The results indicated that aluminium based inorganic flocculants is suitable for microalgae harvesting such as Chlorella ellipsoidea, Dunaliella bardawil, and Dunaliella tertiolecta. The results also recommended that flocculant doses, agitation speed, agitation time, sedimentation time for economical microalgae harvesting method using chemical flocculants.
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