土茯笭을 이용한 Rats의 水銀中毒 解毒에 관한 硏究

崔光敦,李起男 圓光大學校 韓醫學硏究所 1997 원광한의학 Vol.7 No.1

산업화 사회의 등장으로나타난 중금속 중독은 이미 세상을 경악시키고 있다. 이에 대해 의약학계에서 많은 연구들이 이루어지고 있으나 한의학적 접근이 아직 이루어지지 못하고 있는 실정이다. 이에 수은중독에 대해 한의학적으로 해독효과가 있다는 土茯笭을 이용하여 쥐를 통한 그 해독효과를 실험해 보았다. 조직내 수은함량, 조직내 MT함량, 혈액학적 변화, 장기조직 검사에서 유의한 결과가 밝혀졌으며 구체적인 해독의 기전과 성분은 알 수 없으나 토복령의 전해질 수분대사에 의한 작용인 것으로 사료된다. This study was performed to find out the antitoxic effects of Smilacis Glabrae aganist Mercuric Chloride poisoning. The experimental rats were divided into 4 groups such as mercury alone treatment group, and three dose groups of Smilacis Glabrae. Each group was administered with different dose of Smilacis Glabrae such as 15mg, 30mg, 45mg/kg wet weight in pallets for four weeds. Mercuric chloride was administered by 0.7mg/kg body weight rat per day. After giving the challenge dose, mercury, metallothionein concentration and histopathological changes were determined. The results were summarized as follows: 1. The simultaneously administration of Smilacis Glabrae and mercury significantly more decreased mercury concentration in liver compared to the administration of mercury only(P〈0.05). 2. The simultaneously administration of Smilacis Glabrae and mercury significantly more increased renal metallothionein concentration in liver compared to the administration of mercury only(P〈0.05). 3. When kidney and liver tissues were obsreved with as optical microscope, slight changes were visible in those tissues.

유리단 국소의치 장착 후 M.K.G.에 의한 하악운동 형태 및 속도의 변화

최현미,조주온,이상돈,송광엽,박찬운 全北大學校 齒醫學硏究所 1992 전북치대논문집 Vol.10 No.1

The purpose of this study is to evaluate the effects of distal extension partial denture on the mandibular movement patterns and velocity. The subjects are 10 patients who have unilateral or bilateral distal extension edentulous area in maxillary and/or mandibular arches. Their mandibular movement patterns and velocity had been measured by Mandibular Kinesiograph(M.K.G.-K6 diagnostic system, Myo-tronics Inc. Seattle. WA. U.S.A.) once just before the treatment and 8 times every week since the dentures were placed. The data have been analyzed statistically by means of ANOVA and Tukey test. The results have been obtained as follows : 1. The placement of the dentures has reduced the amount of vertical and antero-posterior displacement in the habitual mandibular movement significantly(p<0.01). 2. The maximum opening and closing velocity and the mean opening and closing velocity showed no significant change with the placement of the partial dentures(p>0.01). 3. The velocity trace of maximum opening-closing movement has been more regularized and well-coordinated, and the number of clicks decreased continuously after placement of the dentures and showed stable patterns since the 5th week(p<0.01). 4. The left deviation has been decreased significantly after the placement of the dentures and showed no significant change since the 4th week. The right deviation has also been reduced, but there was shown no difference after the 1st week(p<0.01). 5. The crossover pattern has been most frequently observed in the frontal plane and the sagittal plane. It has not been changed with the denture placement and stabilized uniformly.

다체계의 Isolation-Projection 방법

崔尙惇,趙龍在,申光錫 경북대학교 과학교육연구소 1993 科學敎育硏究誌 Vol.17 No.-

As easy way to utilize the isolation-projection technique in deriving the cyclotron absorption formula is introduced.

SiO₂첨가물질이 SnO₂계 가스 센서의 안정성에 미치는 영향

박광묵,민봉기,최순돈,남효덕 경북대학교 센서기술연구소 2002 센서技術學術大會論文集 Vol.13 No.1

ERP시스템 구축단계별 주요성공요인에 관한 실증적 연구

김상훈,최광돈 한국경영과학회 2001 韓國經營科學會誌 Vol.26 No.4

The purpose of this study is to derive critical success factor for ERP system implementation by integrating managerial, technical, human resource and organizational culture factors which have been proposed as influencing factors for the performance of ERP system implementation in previous studies. Especially, this study divides ERP system implementation process into preparation stage. Implement stage and settle-down and stabilization stage, and then derives critical success factors in each stage. The data for empirical analysis of the research model are collected from 64 companies and the respondents for questionnaire consist of ERP system implementation project managers and user department managers in companies which have already operated it after ERP system installation. The main results of this study are as follows. First, it derives 27 success factors through comprehensive review of various factors which may affect ERP system implementation performance, and categorizes them into one of three stages: preparation stage, implement stage, and settle-down and stabilization stage. Second, the relationship between many success factors at each stage (preparation stage, implement stage, and settle-down and stabilization stage) and performance variables is tested. As a result, the significant correlations between many success factors at each stage and ERP system implementation performance are found, and the difference among success factors in the degree of influencing the system performance is significantly shown. Finally, the relationship between process-oriented performance variables and result-oriented performance ones is tested. As a result, it is found that there is significant correlation between process-oriented performance variables except for one variable - project resource management appropriateness - and result-oriented performance ones. The theoretical contribution of this study is to derive a comprehensive model of critical success factors for implementing ERP system project from the system development life cycle perspective, and empirically test it through field survey with a wide range of data collection. And, the practical implication of this study is to present the desirable guidelines for performing ERP system implementation project successfully.

구멍밤고둥, Chlorostoma argrostoma turbinata의 생식주기에 관한 연구

김병호,최광식,이영돈 제주대학교 해양연구소 1996 해양자원연구소연구보고 Vol.20 No.-

Reproductive cycle of the top shell, Chlorostoma argrostoma turbimta was investigated histologically to know it's gonadal development using gonadosomatic index(GS1). Samples were collected at the coastal area of Hamdok in Cheju-Do from Nobember, 1994 to September, 1995. 1. Chlorostoma argrostoma turbinata appeared to be dioecious, and neither sex reversal nor hermaphrodi-tic. The sex ratio was approximately 1:1. 2. The gonad was located on the surface of the liver in the posterior spiral meat part of the shell. 3. In male and female. GSI began to increase from April when water temperature began to increase and reached it's maximum value in August. It began to decrease September thereafter, maintained relatively low value until January. 4. The annual reproductive cycle of this species could be classified into five successive developmental stage ; multiplication stasge, growing stage, mature stage, spent stage, degenerative and recovery stage. 5. In male and female, spawning time were from March to December but, main spawing time were September.

공공부문 정보시스템의 하드웨어 용량산정 방식 설정을 위한 실증적 연구

정해용,나종회,최광돈 한국정보사회진흥원 2005 정보화정책 Vol.12 No.3

2002년도부터 2006년도까지의 국가정보화촉진계획인『e-Korea Vision 2006』에 의하면 과거 수년 동안 정보시스템에 대한 투자액은 급격하게 증가하고 있으며, 정보시스템에 대한 투자액의 50%이상은 하드웨어 구축에 소요되는 비용인 것으로 분석되고 있다. 따라서 정보시스템 구축∙운영에 소요되는 하드웨어 규모를 적정하게 산정하는 작업은 효과적인 정보화 투자를 위한 필수불가결한 작업으로 인식되고 있으며, 이를 통하여 자원낭비를 최소화하고 기회비용을 절감할 수 있다는 점에서 그 중요성이 증대되고 있다. 이러한 관점에서 본 연구에서는 공공부문에서의 정보시스템 구축∙운영에 필요한 하드웨어 용량을 객관적으로 산정할 수 있도록 용량산정식 및 용량산정식에 포함될 항목들을 실증적으로 제시하였다. 즉, 업무중심의 정보시스템 프로젝트 단위별로 CPU 및 메모리와 하드디스크의 용량을 산출하는데 고려해야 할 항목들과 이러한 항목들을 통하여 적정 용량을 산정할 수 있는 용량 산정식을 도출하였다. 이론적 문헌검토와 SI업체 및 하드웨어 공급업체의 사이징 전문가들의 경험적 노하우 등을 통하여 기존에 활용되고 있는 용량산정식에 근거하여 기준이론을 설정하고 이를 현장의 실무전문가들을 대상으로 설문조사 및 전문가 집단토의 방식을 통하여 타당도를 검증하였다. 본 연구의 주요 의의로는 공공기관의 현장실무 전문가 및 공급업체의 용량산정 전문가들을 대상으로 실행적 측면에서 CPU(Web/WAS용 및 OLTP용), 메모리, 디스크에 대한 용량산정식 및 각 용량산정식에 포함되어야 할 항목들이 실증적으로 도출되고 전문가 집단토의를 통하여 확인함으로써 객관성을 확보한 용량산정식을 제시하였다는 점이다.

機能性胃腸障碍 및 急性肝炎 患者에서 Clebopride에 依한 症狀의 好轉과 胃內容物排出 時間과의 關係

范熙承,金成烈,鞠敦杓,朴光淑,尹鍾晩,崔元,金文烈 최신의학사 1985 最新醫學 Vol.28 No.6

A Study on Contents Channel Integration on Facebook Fan Pages Using a Third Party App

Kwang Don Choi(최광돈) 국제e-비즈니스학회 2015 e-비즈니스 연구 Vol.16 No.2

Fashion Revolution in the 20th Century

Kwang Don Choi,Key Sook Geum 한국복식학회 2006 International journal of costume and fashion Vol.6 No.2