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이영종 ( Yeong Jong Lee ),하진용 ( Jin Yong Ha ),김동혁 ( Dong Hyuk Kim ),박석천 ( Seok-cheon Park ) 한국정보처리학회 2013 한국정보처리학회 학술대회논문집 Vol.20 No.2
최근 우리나라의 수도권을 비롯하여 대도시의 교통량 증가로 인한 교통혼잡을 줄이기 위해 교통혼잡의 주된 원인이 되는 불법주·정차를 미연에 방지하는 시스템이 필요하다. 따라서 본 논문에서는 복잡한 도심에서 쉽고 빠르게 가까운 주자창을 찾고자 GPS와 LSB에 대해 조사 및 분석한 자료를 바탕으로 GPS와 LBS를 이용한 주차 관리 시스템을 설계하였다.
이영종 ( Lee Yeong Jong ) 대한본초학회 2003 大韓本草學會誌 Vol.18 No.3
N/A Objectives: Sterculliae lychnophorae Semen is not frequently used in Korean clinical situation, but can be used for curing acute sphagitis caused by fever in lung, etc., because of its antiinflammatory effect. The present study examined the Sterculliae lychnophorae Semen`s antipyretic and antiinflammatory effects on larynx, and discharge of phlegm, for the purpose of developing a recipe effective for sphagitis and bronchitis. Methods: Oral administration of the Sterculliae lychnophorae Semen decoction was conducted to white rats. Specifically, after inducing the rats to be feverish by injecting LPS(l0Vg LPS/kg body weight) of Serratia marcescens into caudal vein of them, rectal temperatures were taken to prove antipyretic effect. After inducing the rats to be edematous by injecting 0.1 ml of 1% carrageenin into hind paw, the volumes of hind paw were measured to prove antiinflammatory effect. In order to testify its effect on the discharge of phlegm, after administrating the decoction to rats, the quantity of mucous in their throat were measurd. In addition, by aspirating 250ppm of sulfur dioxide for two and half hours a day during 12 days, rats were induced laryngopharyngeal infections. Then administrating the decoction since the 5th day of gas inhalation, the numbers of leukocyte were figured for the purpose of identifying microbial infections. Results: 1. Sterculliae lychnophorae Semen decoction had antipyretic effects on pyrexia induced by LPS injection. 2. Sterculliae lychnophorae Semen decoction had antiedematous effects on edema induced by carrageenin injection. 3. Sterculliae lychnophorae Semen decoction did not influence the structure of normal mucous tissue in their throat. 4. Sterculliae lychnophorae Semen decoction had an effect on inflammation induced by exposure to sulfur &oxide. Conclusion: Sterculliae lychnophorae Semen decoction had strong antipyretic, and antiedematous, and antiinflammatory effects on larynx. This imldys that Sterculliae lychnophorae Semen can be used to cure sphagitis effectively.
강유전체를 이용한 이동통신주파수 대역용 박형 전파흡수체의 제조 및 특성
이영종,윤여춘,김성수,Lee, Yeong-Jong,Yun, Yeo-Chun,Kim, Seong-Su 한국재료학회 2002 한국재료학회지 Vol.12 No.2
High-frequency dielectric and microwave absorbing properties have been investigated in ferroelectric materials (BaTiO$_3$(BT), (1-x)Pb$Mg_{\frac{1}{3}}Nb_{\frac{2}{3}}$)O$_3$-xPbTiO$_3$(PMN-PT), (1-x)Pb$Mg_{\frac{1}{3}}Nb_{\frac{2}{3}}$O$_3$-xPb(Zn_{\frac{1}{3}}Nb_{\frac{2}{3}}$)O$_3$(PMN-PZN) for the aim of thin microwave absorbers in the frequency range of mobile telecommunication. The specimenns are prepared by conventional ceramic processing and complex permittivity has been measured by transmission/reflection method. The ferroelectric materials show high dielectric constant and dielectric loss in the microwave range and their domiant loss mechanism is considered to be domain wall relaxation. The microwave absorbance of BT 0.9PMN-0.1PT, and 0.8PMN-0.2PZN specimen (determined at 2) are found to be 99.5% (at a thickness of 4.5 mm), 50% (2.5 mm), and 30% (2.5 mm), respectively. It is suggested that PMN-PT or PMN-PZN ferroelectrics are good candidate materials for the spacer of λ/4 absorber. The use of ferroelectric materials is effective in reducing the thickness of absorber with their advantage of high dielectric constant.