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- 저자 : Jun-Yub Lee(이준엽) (검색결과 29 건)
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다중판별분석을 이용한 이동통신서비스 사용자 분류와 HSDPA 서비스 전략에 관한 연구
이준엽(Jun-Yub Lee) 한국컴퓨터정보학회 2010 한국컴퓨터정보학회논문지 Vol.15 No.5
Along with the advance of industrial technology in mobile telecommunications and diversity in customer needs, today's Korean mobile telecommunication market has rapidly expanded due to stronger competition among businesses as well as increasing the number of subscribers. 3G roll-outs of mobile telecommunications service, so called HSDPA has seriously promoted marketing strategies among mobile telecommunication companies which led to move to the next generation customers. Understanding the competitive situation, mobile telecommunications companies are currently focusing on increasing sales per subscriber as well as increasing the number of subscribers as a solution to occupy the leading position in the mobile telecommunications industry in the future. The purpose of this study was to classify the customers in mobile telecommunications service with or without higher tendency of intention to subscribe and use the service using discriminant analysis. Through the discriminant analysis, discriminant function which classifying the critical user has been identified. The result of this study will give useful marketing strategies in competitive HSDPA mobile telecommunications market.
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음식관광객의 관여가 음식관광 참여활동과 행동의도에 미치는 영향
이준엽 ( Jun Yub Lee ),권미영 ( Mi Young Kwon ) 관광경영학회 2009 관광경영연구 Vol.39 No.-
Integral part of the experience that it is only in recent years that it has become a subject of study in its own right. The purpose of this study is to effect of involvement of food tourists` on participation in food tourism and behavioral intention. The subject matter of this dissertation is food tourism participation in food related activities at a destination to experience its food tourists` attributes. The empirical objectives of this dissertation concerned identifying the underlying dimensions of food tourism, developing a conceptual framework that explains participation in food tourism. Survey was carried out among tourists visited in Gwangju & Jeonju region. Spsswin 12.0 statistical package were used for further analysis. The results were as follows: Firstly, Enduring involvement with food related activities is positively related to at least one dimension of food tourism. Secondly, There is a significant difference in tourists` participation in at least one dimension of tourism and their age & occupation. Thirdly, Food Tourists` on Participation had directly positive effect on satisfaction & Behavioral Intention.
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금속산화물 촉매상에서 Methane 을 이용한 NO 의 선택적 촉매 환원 반응
이준엽(Jun Yub Lee),홍성창(Sung Chang Hong) 한국공업화학회 2002 공업화학 Vol.13 No.5
The purpose of this study is to understand and develop HC (Hydrocarbon)-SCR catalysts to remove NOx emitted from LNG power plant which make NOx selectively removed with CH_4 as reductants. In order to examine catalyst of the greatest reactivity as used CH_4, the screening test of supports and active metals has unveiled that gallium has the highest SCR characteristics among active metals and γ-Al_2O_3 has the highest activity among supports. For Ga/γ-Al_2O_3 the activity changed with impregnated Ga content and the highest at 27 wt%, which correspends to a theoretical monolayer coverage. Also the lowest increasing velocity is, the highest the activity is. It is considered that gallium oxide highly dispersed on γ-Al_2O_3 at low increasing velocity is responsible for the high activity. The relations between the activity and the production of exhausted gases such as CO, NO_2 were investigated. In addition, CO was used as a reductant instead of CH_4 in order to demonstrate the reaction mechanism. It is found that CO and NO_2 are main intermediates and their behavior give great impact on No removal efficiency.
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지중 순환수 유량 변화에 따른 지열원 히트펌프 시스템의 성능 특성 연구
이준엽(Jun Yub Lee),정진택(Jin Taek Chung),우정선(Jungson Woo),최종민(Jong Min Choi) 대한설비공학회 2010 설비공학 논문집 Vol.22 No.10
The aim of this study is to investigate the influence of the secondary fluid flow rate through GLHX on a GSHP system with vertical single U-tube type GLHXs. The COP of a GSHP system with large flow rate was lower than it with small flow rate due to large power consumption of ground loop circulating pump. It is suggested that the heat pump unit with high COP and low flow rate through the GLHX have to be selected in order to enhance the performance of the system and reduce the length of GLHX.
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온라인 시장의 효율성에 관한 연구 : 가전제품시장의 가격분산을 중심으로
이준엽 ( Jun-yub Lee ),김경호 ( Kyung-wha Kim ) 한국고등직업교육학회 2005 한국고등직업교육학회논문집 Vol.6 No.3
Along the increasing popularity of the Internet, the recent growth of online purchasing appear to have significant impact on consumer’s shopping environment. To investigate the efficiency characteristics of the Internet market, we have examined the domestic online markets for electric appliances to see how it is different from consumer's awareness in terms of the price dispersion. The analysis show that the consumers tend to overestimate the pricing in conventional markets. However, when proportion of the price dispersion in conventional markets is low, the consumer’s awareness in the price dispersion becomes highly accurate.
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