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외과적 절제술과 OK-432 경화요법을 병용한 임파관종의 치료:
조주연(Ju-Yeon Cho),차두원(Duwon Cha),백상흠(Sang-Heum Baek),이주덕(Ju-Duck Lee) 대한구강악안면외과학회 2006 대한구강악안면외과학회지 Vol.32 No.3
Lymphangiomas are benign tumors of the lymphatic system characterized by congenital lymphatic malformation such as anastomosis or obstruction of the lymphatic channels. They are most frequently diagnosed in children younger than 2 years, and the lymphangiomas in head and neck represent about 50-75% of all lymphangiomas. Spontaneous regression is rare, and rapid enlargement occurs secondary to infection or trauma. Enlargement may cause serious sequence such as airway obstruction, feeding difficulties, and cosmetic problems. Treatments previously used for lymphangiomas include surgical excision and intralesional injection of sclerosing agents. Problems associated with surgical excision include the risk of scarring, damage to surrounding vital structure and the high risk of incomplete excision. The sclerosing agents previously used have numerous local and systemic side effects as their problems. We present a case of lymphangioma occured in tongue that was treated by surgical excision and sclerotherapy with OK-432.
조주연(Ju Yeon Cho),이인숙(Inn Sook Lee),김효신(Hyo Shin Kim) 韓國學校保健學會 2007 韓國學校保健學會誌 Vol.20 No.2
Purpose: To investigate the sexuality awareness of elementary school students according to viewing internet obscenity . Methods: The subject of this study was total 594 students of 6th grade at 3 primary schools in Gyunggi-do. The data were collected through a self-reporting questionnaire from December, 11 to December, 18, 2006. Results: 1. 19.2% of respondents viewed internet obscenity. As for the first time they viewed it, 41.2% of respondents was when they were 6th grade students. Fifty percents of respondents viewed internet obscenity accidently while surfing through the internet. As for the places where they viewed internet obscenity, 59.6% of respondents was at their house. Fifty percents of respondents answered that they felt no feeling after they viewed internet obscenity. There was a significant difference in viewing internet obscenity according to gender. 2. The mean score of sexuality awareness was 46.4. There were significant differences in sexuality awareness according to gender, school record, and understanding about prohibition of the teenagers' viewing internet obscenity. Conclusion: We should provide lower grade students health education on internet obscenity preventive program at the home and school.
조주연(Ju-yeon Cho),조우종(Woo-jong Cho),박정호(Jung-ho Park),김경수(Kyung-soo Kim) 제어로봇시스템학회 2010 제어·로봇·시스템학회 논문지 Vol.16 No.5
As high quality image is required for digital cameras in recent use, the image stabilization technique has drawn much attention to prevent image degradation from shaky disturbance by users. In this paper, the optical image stabilization (OIS) system for DSLR (Digital Single Lens Reflex) camera is considered. First, the analytic model of an OIS system is presented to demonstrate the mechanism of image destabilization due to unknown disturbance that causes blurry images on CCD sensor. Then, to enhance the stabilization performance, a sliding mode control based on the min-max nonlinear control is introduced. Through the experiments and simulations, the effectiveness of the proposed method will be verified.