가우시안 빔 프로파일의 CPT를 위한 비선형 주사속도변조

최덕규,한찬호,정영헌 경운대학교 산업기술연구소 2001 産業技術硏究論文誌 Vol.3 No.2(B)

A scan velocity modulation(SVM) technique has been widely used for compensating the deterioration of picture quality due to the beam profile effect of the color picture tube(CPT). In conventional SVM system the so-called linear SVM method has been employed, whose modulation velocity is linearly proportional to the variation in the video signal amplitude. However, the effect of picture quality improvement is irregular with video signal amplitude in the linear SVM. In this paper we report a theoretical analysis of the SVM effect on the spatial brightness distribution of CPT according to the variations in luminance signal amplitude and differentiation circuit characteristic. We also propose a nonlinear SVM method based on the results of the theoretical analysis for optimum picture quality improvements. In computer simulation we confirmed uniform improvements in picture quality by the SVM of nonlinear amplitude transfer characteristic.

급성상악동염 환자에서 클라리스로마이신 투여후 치료결과 및 안정성에 대한 평가

최영석,추무진,신시옥,양승덕 최신의학사 1995 最新醫學 Vol.38 No.12

강원도 하천 호안 실태조사

최한규,정영덕,백효선 江原大學校 産業技術硏究所 2009 産業技術硏究 Vol.29 No.B

The propose of this study is to survey the revetments installed in Gangwon Province for identifying their characteristics. The survey showed that in eastern Gangwon Province, gabion, retaining wall and concrete blocks took about 63% or more, and in western Gangwon Province, dry wall, gabion and retaining wall, 68% or more. Gabion and dry wall had better vegetation coverage in western Gangwon Province than in eastern Gangwon Province. That is thought to be due to slope of river and under-water frequency.

고령토로부터 알루미나 추출 잔분 활용에 관한 연구

이덕형,이용근,최세영 연세대학교 산업기술연구소 1992 논문집 Vol.24 No.2

Autoclaved hydrate of CaO-SiO₂-H₂O system was investigated according to CaO/SiO₂ mole ratio and the condition of hydrothermal treatment. Residual product for extraction of alumina from hydrochloric acid treated domestic kaolin and Ca(OH)₂ were used as the source of SiO₂ and CaO, respectively. The main crystalline phases were C-S-H(I), tobermorite, xonotlite and transformed in order of C-S-H(I) → tobermorite → xonotlite as hydrothermal temperature, time, CaO/SiO₂ mole ratio increase. The porosity and absorption were increased with increasing CaO/SiO₂mole ratio and hydrothermal treatment time. The bending strength was dependent on the balanced bond between the residual and hydrothermal products, and tended to be maximum at CaO/SiO₂ of 0.6, and hydrothermal temperature of 140℃.

금오산 도립공원의 지형 및 지표공간 분석을 위한 공간정보기술의 활용

이진덕,최영근 國立金烏工科大學校 産業技術開發硏究院 2002 産業技術開發硏究 Vol.18 No.-

This study shows data collection and data processing needed for park management using GIS and satellite remote sensing. Digital topographic maps, geological maps and satellite imagery covering Kumoh Mt. Province Park selected as the study area were utilized for analysis of landform and land surface space. Thematic maps and statistic data associated to elevation, slope and aspect were obtained through extracting DEMs from contour layers of digital topographic maps. The other spatial analysis associated to geology and vecter data overlaid on DEM were conducted. Also a landcover map and a NDVI map were extracted through processing of Landsat TM satellite imagery. It is expected that these technologies can be utilized as the tool of pre-assessment for the suitable land use that takes the middle of development and preservation especially in natural parks.

Triamcinone acetonide의 유리체강내 주사후 발생한 안내염 3례

김영덕,최광주 朝鮮大學校 附設 醫學硏究所 2003 The Medical Journal of Chosun University Vol.28 No.2

Purpose : We report 3 cases of endophthalmitis that is the most serous complication after intravitreal infection of triamcinolone acetonide. Methods : Of patients that intravitreal injection of triamcinolone acetonide was performed, two eyes of two persons with macular edema due to diabetic retinopathy and one eye of one person with cystoid macula edema after phacoemulsification were complicated by endophthalmitis. We performed gram stain, bacterial culture, intravitreal injection of antibiotics, and pars plana vitrectomy. Results : Serratia marcescens were found in two cases, the other wasn'ts. Final visual acuity was no light perception in 2 casea and 0.3 in 1 case. 목적 : triamcinolone acetonide의 유리체강내 주사 후 발생된 합병증중 가장 치명적인 안내염 3례를 경험하였기에 이를 보고하고자 한다. 대상 및 방법 : 당뇨망막병증으로 인한 황반부종 2명, 2안과 백내장수술후 발생한 낭포성 황반부종 1명, 1안에서 치료를 위해 유리체강내 triamcinolone acetonide 주사 후 발생한 안내염 환자에서 균배양검사, 유리체강내 항생제 주사 및 유리체 절제술을 시행하였다. 결과 : 안내염환자의 균배양검사에서 2례에서는 serratia marcescens가 원인균으로 판명되었고 1례에서는 균이 배양되지 않았다. 최종시력은 2례에서 무광각, 1례에서는 0.3으로 교정되었다.

다중 가설 추적 알고리듬의 성능 평가

정영헌,한찬호,최덕규 경운대학교 산업기술연구소 2001 産業技術硏究論文誌 Vol.3 No.2(C)

The Multiple Hypotheses Tracking (MHT) algorithm has been shown to be one of the most cost- effective estimation schemes for hybrid systems. Its performance, however, could only evaluated via expensive Monte-Carlo simulations. An effective hybrid approach to the performance evaluation without recourse to simulations is presented here. This approach is based on a scenario-conditional performance measure of hybrid nature in the sense that it is a continuous-valued function of a discrete-valued random sequence. The performance measure is calculated efficiently in an off-line recursion.

韓國産 표고버섯 飮料의 品質에 關한 硏究

鄭永化,趙德鳳,崔春淳,馬相朝 광주보건대학 1984 論文集 Vol.9 No.-

To develop a beverage indigenous to Korea, Extracts from the mushroom were investigated for their chemical composition, extraction conditions and processing methods. Mushroom, Lentinus edodes which had been dried at 50℃ for 20 hours were extracted with hot water for 5 minutes, respectively. Fructose(10%, w/w) and licorice extracts(4 %, v/v) were added in the extracts. In an attemt to evalluate the quality of food by sensory testing, the difference testing for samples was conducted by selected members of a sensory panel. The results of the present study were as follows: 1. Amino acids of the final products were mostly composed of threonine and prolamine, glutamic acid, arginine, alanine, phenylalanine, etc. 2. GMP content of the final products was 2.09%(w/v). 3. It was concluded that extracts from the mushroom processes sufficiently acceptable qualities as a favorite beverage.

성공적인 경피적 승모판 교련절개술 후 임상 경과와 재협착율

김영학,강덕현,송재관,최기준,이철환,홍명기,김재중,박성욱,박승정 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.2

허혈성 심질환에서 염증지표에 관한 연구

번정득,권영주,박상호,한대희,이상철,강진환,김명구,심규혁,최병조,온영근,현민수,김성구 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.2

Background : Atherosclerosis is the chief underlying cause of ischemic heart disease and there is increasing evidence that inflammation is an important determinant of the development of atherosclerosis. We assessed the levels of inflammatory markers in patients with ischemic heart disease and normal group who has normal coronary angiograms. Materials and Methods : Coronary angiography was performed in 142 patients. 107 patients of ischemic heart disease(stable angina pectoris 58, unstable angina pectoris 30, Acute myocardial infarction 19) and 38 normal control subjects. We assessed the level of inflammatory markers, such as CRP, ESR, fibrinogen and leukocyte. Results : CRP, ESR and fibrinogen values of the patients with stable angina pectoris and unstable angina pectoris were higher than that of normal control group, but there were no statistical significance. Leukocyte value of the patients with unstable angina pectoris(9003.3±701.5/mm^(3)) was significantly higher than that of the patients with stable angina pectoris(6685.5±245.8/mm^(3)) and normal control subjects(6394.3±235.1/mm^(3)). CRP, ESR and fibrinogen values of the patients with acute myocardial infarction were also higher than that of normal control subjects. CRP was 3.88±2.05 mg/dL in acute mocardial infarction group, and 0.29±0.15 mg/dL in normal control subject group(p<0.05). Fibrinogen was 541.6±45.1 mg/dL in acute myocardial infarction group, 321.4±25.6 mg/dL in normal control subject group(p<0.05). Leukocyte was 10942.1±737.6/mm^(3) in acute myocardial infarction group, 6394.3±235.1/mm^(3) in normal control subject group(p<0.05). Conclusions : This study demonstrate that CRP, fibrinogen and leukocyte values of acute myocardial infarction group were significantly higher than that of control group and stable, unstable argina pectoris group. Leucokyte values were significantly elevated in unstable angina group, but CRP values were not in unstable angina group.