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라이프스타일에 따른 여가동기와 여가생활 만족에 관한 연구
정광현,이재형 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.2
This study is based on the investigation of members of the college clubs related to leisure activities and people who are working out in sports centers. In Busan, Kyung-nam, and Kyung-ju to inquire into the relation between the leisure motivation according to their life-style and satisfaction of their leisure life; to draw up some alternative for improving the quality of the leisure service industry; and to offer some fundamental data to improve the quality of life and productivity, putting spare time from the law of working 5 days a week to practical use efficiently and aggressively after the operation of the system which people work 5 days a week. The first, the leisure motivation from several types of people's life-style which affect the improvement of individual are achievement pursuit type, knowledge pursuit type, satisfaction pursuit type, safety pursuit type, health pursuit type and so on. The variables to affect self-discovery are showing-off type, health pursuit type, knowledge pursuit type. The variables to affect the purpose of healing and health appear safety pursuit type, satisfaction pursuit type, and showing-off type; the variables to have influence on sociality are satisfaction pursuit type, safety pursuit type, achievement pursuit type, showing-off type, knowledge pursuit type and so on. The second, the satisfaction about leisure life related to different types of life style is in accordance with safety pursuit type, satisfaction pursuit type, health pursuit type, achievement pursuit type, knowledge pursuit type, showing-off type. The third, the satisfaction about spending the leisure time related to the leisure motivation is under the influence of sociality, purpose of healing and health, improvement of individual, self-discovery.
소결조제 변화에 따른 PCW-PMN-PZT세라믹스의 저온소결 및 압전특성
정광현,이덕출,류주현,Chung, Kwang-Hyun,Lee, Duck-Chool,Yoo, Ju-Hyun 한국전기전자재료학회 2004 전기전자재료학회논문지 Vol.17 No.12
In this study, in order to develop the low temperature sintering ceramics for multilayer piezoelectric transformer, PCW-PMN-PZT ceramics added with Li$_2$CO$_3$, Bi$_2$O$_3$ and CuO as sintering aids were manufactured, and their microstructural, dielectric and piezoelectric properties were investigated. When the only CuO was added, specimens could not be sintered below 98$0^{\circ}C$. However, when Li$_2$CO$_3$ and Bi$_2$O$_3$ were added, specimens could be sintered below 98$0^{\circ}C$. Li$_2$CO$_3$ and Bi$_2$O$_3$ addition were proved to lower sintering temperature of piezoelectric ceramics due to the effect of Li$_2$O-Bi$_2$O$_3$ liquid phase. Li$_2$CO$_3$ and Bi$_2$O$_3$ added specimens showed higher piezoelectric properties than those of the only CuO added specimens. At 0.2 wt% Li$_2$CO$_3$ and 0.3 wt% Bi$_2$O$_3$ added specimen sintered at 92$0^{\circ}C$, the dielectric constant of 1457, electromechanical coupling factor of 0.56 and mechanical quality factor of 1000 were shown, respectively. These values are suitable for multilayer piezoelectric transformer application.
정광현 한국관광학회 2003 관광학연구 Vol.26 No.4
There is a notable change in Korea’s food-service industry nowadays. It may be due to the increased GNP, women’s role enhancement in the society, increased needs for nutritional food, decreased working hours and the change in cultural behavior. These changes brought the increase of dining outs in the dietary pattern. Meal is no longer regarded merely a necessity that meets one’s basic needs but a means to relax and socialize. As convenience and diversity are highly requested the food industry is westernizing fast. This study aims at providing decision-makers and marketers both the target market information and useful clues to understand customers’ motives and choice behavior in comparative restaurants between Korea and Japan.
정광현,원철식 대한관광경영학회 2002 觀光硏究 Vol.17 No.2
The purpose of this study is to explore the relationship among lifestyle, leisure recognition and leisure satisfaction. The study surveyed 462 subjects who have participated in various leisure activities and processed the result using SPSS for Win. V. 10.0. For statistical analysis, Frequency, Factor Analysis and Regression were put into operation. As a result of the Factor Analysis of lifestyle, six factors(accomplishment pursuit type, safety pursuit type, knowledge pursuit type, health pursuit type, satisfaction pursuit type, ostentation pursuit type) have been extracted. The result of the Factor Analysis of recognition of leisure revealed six factors(self-realization of function, culture/psychology of function, health of function, sociability of function, social of function, stationary function). In conclusion, this study shows that lifestyle and recognition of leisure exert influence on the satisfaction of leisure life.
MnO<sub>2</sub> 첨가에 따른 저온소결 PCW-PMN-PZT세라믹스의 유전 및 압전특성
정광현,이덕출,이창배,이상호,류주현,이형규,강형원,Chung, Kwang-Hyun,Lee, Duck-Chool,Lee, Chang-Bae,Lee, Sang-Ho,Yoo, Ju-Hyun,Lee, Hyeung-Gyu,Kang, Hyung-Won 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.2
In this study, in order to develop the low temperature sintering ceramics for multilayer piezoelectric transformer, PCW-PMN-PZT ceramics using Li$_2$CO$_3$, Bi$_2$O$_3$, and CuO as sintering aids were manufactured according to the amount of MnO$_2$ addition. Their microstructural, dielectric and piezoelectric properties were investigated. When the sintering aids were added, specimens could be sintered below 95$0^{\circ}C$, but mechanical qualify factor decreased. Therefore, MnO$_2$ was added excessively to the PCW-PMN-PZT ceramics to increase mechanical quality factor. At the sintering temperature of 95$0^{\circ}C$, the density, dielectric constant($\varepsilon$$_{r}$), electromechanical coupling factor(k$_{p}$), mechanical quality factor(Q$_{m}$) and Curie temperature(T$_{c}$) of 0.1 wt% MnO$_2$ added specimen showed the optimal values of 7.75 g/㎤, 1503, 0.57, 1502, and 337, respectively, for multilayer piezoelectric transformer application.ation.n.