플라즈마 표지소자의 제작

이상윤,라병욱,박동수,황인헌,이덕동,신영남,박성배,이동욱,박용석,박형근,손상호,권태근,채경락,정경득 慶北大學校 自然科學大學 1986 自然科學論文集 Vol.4 No.-

An Ac-type Plasma Display Panel (PDP) operating with Ne-Ar(0.1%) Penning mixture gas is fabicated. The characterics of the panel with electrodes covered with thin and thick dielectric layers are studied. The brightness of the Neon-orange light emitted by the panel measured as function of applied voltage and frequency. As an application, a graphic display system equipped with PDP showing still and moving pictures is made.

원통 연삭에서 가공 능률 향상을 위한 연삭 저항의 측정에 관한 연구

김원일,이진,이윤경,왕덕현,이상복,이관철,문원길 경남대학교 공업기술연구소 2000 硏究論文集 Vol.18 No.-

본 연구에서는 원통 연삭 가공에서 가공 능률 향상을 위한 연삭 저항을 측정하고자 연삭 가공 중에 발생하는 연삭 저항의 추이를 확인하였고 다음과 같은 결과를 얻었다. 숫돌과 공작물간의 연삭 강성은 공작 속도의 증가에 따라 지지계의 강성이 높은 경우 증가하였고 절삭 깊이와 연삭 숫돌의 속도에는 연삭 강성이 감소하는 경향을 보였다. 또한 총합 강성은 공작 속도, 절삭 깊이 및 연삭 숫돌의 속도 증가에 따라 지지계의 강성이 높을 수록 증가하였다. 연삭기의 강성 변형과 가공 능률에 영향을 주는 값으로 연삭 강성비는 지지계의 강성이 높을 수록 감소하였다. In this study, the measurement of grinding resistance to improve grinding efficiency in cylindrical grinding was studied and the following conclusions could be obtained. Relation grinding wheel and workpiece, grinding stiffness increases according to increase of work speed for high machine stiffness and decreases depth of cut and grinding wheel speed. Also, resultant stiffness increases high machine stiffness according to increase work speed, depth of cut and grinding wheel speed. The values of the effect stiffness deflection in grinding machine, grinding stiffness ratio decrease according to high machine stiffness.

위절제술 환자의 표준진료지침 개발 및 적용 효과

김은희,김철규,이순교,김순덕,이혜옥,권정순,이경미,이민미,심순미,유용만,신종식,강은희,이상일,김병식,오성태,육정환,박수길 한국의료QA학회 2003 한국의료질향상학회지 Vol.10 No.2

Background : Gastric cancer is the most common malignant tumor in Korea. surgical operation is one of the major treatment modalities for gastric cancer patients. Therefore, gastrectomy is one of the most common procedures in General Surgery. There were variation in length of hospital stay and medical treatment for gastrectomy between three surgeons at Asan Medical Center. Clinical pathways have received considerable attention as a tool for recucing the medical practice variation, increasing the efficiency of care process, and improving the quality of care. The aim of this study was to evaluate the effect of a clinical pathway for gastrectomy in gastric cancer patients. Methods : The clinical pathway for gastrectomy was developed and implemented by a multidisciplinary group in Asan Medical Center. A computerized clinical pathway program was developed and revised after a pilot test. A total of 145 patients underwent gastrectomy by three surgeons at Asan Medical Center. We compared the length of hospital stay, patient satisfaction, and unplanned readmission rate between the pre-pathway group(n=67) and the post-pathway group(n=78). We also investigated the degree of satisfaction among the physicians and nurses who were main end-users of the clinical pathway. Results : The clinical pathway was applied to all target patients. The average length of hospital stay was shortened from 12.7days to 10.6days(p<0.01). The degree of patient satisfaction with the care process changed from 90.3% to 89.2% after the implementation of the clinical pathway, but the difference was of satistically significant(p=0.761). Unplanned readmission rate was 2.9% in the pre-pathway group. More than 90% of physicians and nurses answered that the clinical pathway had been a useful tool in their medical practice. Conclusions : The findings of the study demonstrated that implementation of the clinical pathway for gastrectomy produced substantial reduction in the length of hospital stay while improving the quality of patient outcomes. The computerized clinical pathway program can be used as one of the powerful patient management tools for reducing the practice variations and increasing the efficiency of care process in Korea hospital settings.

循環 質疑가 支援되는 客體 指向 質疑語

李德世,李相文 忠州大學校 1994 한국교통대학교 논문집 Vol.29 No.2

I attempt to reveal the property of the Relational Query Language for the extension of the Semantics processing of the Object-Oriented Query Model. In addition, I introduced class variable of the OSAM Query Model and defined class variable as association variables. Thus represention of association was enforced. And I described Object Definition Language and Query Language in detail. Also I proposed to support cycle query in class-hierarchy and composite hierarchy.

PCB조립 라인의 준비 시간 단축 및 재고품 감소를 위한 스케줄링 전략

이영해,김덕한,전성진 한국경영과학회 1997 韓國經營科學會誌 Vol.22 No.1

Printed circuit board (PCB) assembly line configuration is characterized by very long set-up times and high work in process(WIP) inventory level. The scheduling method can significantly reduce the set-up times and WIP inventory level. Greedy sequence dependent scheduling (GSDS) method is proposed based on the current methods. The proposed method is compared with the current method in terms of three performance measures: line throughput, average WIP inventory level, and implementation complexity.

DMBA 투여후 랫트의 조혈기능에 미치는 녹용의 영향에 대한 연구

이상목,김찬규,이덕윤 건국대학교 생명과학연구원 1995 생명과학지 Vol.2 No.-

This study was carried out to investigate the effects of Cervi Cormu on the hemopoietic functions in Sprague-Dawley rats. 7, 12-Dimethylbenz[a]anthracene(DMBA) was administered subcutaneously to Sprague-Dawley rats by interscapular single injection of 100㎍/g of body weight in order to induce hypofunction of hemopoietic organs. Freeze-dried powder of Cervi Cornu was continuously administered, perorally, as a concentration of 20㎎/200gm B. W. in saline. Experimental and control groups of rats were sacrificed on day 7, 14 and 21 following the injection of DMBA. The results obtained were summarized as follows: Body weights of experimental and control groups showed similar values. Thymus weights of control and deer horn extract(DHE)-treated groups showed similar values, but those of DMBA-treated groups were remarkably decreased in comparison with control groups. Spleen weights of DHE-treated groups were moderately increased comparing to those of control groups, but those of DMBA-treated groups were remarkably decreased in comparision with control groups. RBC numbers of experimental and control groups showed similar values. Hb and Hct in DMBA-treated groups and DHE-treated groups following DMBA treatment were decreased at 3 weeks in comparison with control groups. MCV in DMBA-treated groups were decreased comparing to control groups. MCH and MCHC in experimental and control groups showed similar values. Albumin, BUN, and total protein in experimental and control groups showed similar values. Total cholesterol, alkline phosphatase, and creatinine were decreased in DHE-treated groups comparing to those of control group through the experimental period. SGOT and SGPT were decreased in DHE-treated groups, and those were decreased in DMBA-treated groups and DHE-treated groups following DMBA treatment at 2 and 3 week, comparing to those of control groups.

젖소 足皮膚炎에 대한 오존수의 治療 效果

이수진,조성환,전무형,김덕환,박창식,한홍율,김명철 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10

This study was carried out to determine therapeutic the effect of ozonated water therapy on bovine pododermatitis. In addition, bactericidal effect of ozonated water on etiological agent of bovine pododermatitis was examined. The pathohistological examination for the pododermatitis, according to application with ozonated water and ozone ointment was investigated. Thirty healthy cattle were divided two groups(each of 15) : control group (povidone group), treatment group (ozone solution group). Various parameters were evaluated in terms of the lameness score, swelling score, lesion score, WBC count, neutrophil count, pathohistological finding, and antimicrobial action. The decrease of lameness and lesion score were shown in hoof lesions on 14 days after application of ozonated water. Significant decrease of swelling was shown in hoof lesions on 14 days 1 Corresponding author after application of ozonated water(p < 0.01). In hematological findings, WBC count revealed values within normal range. The number of neutrophils was slightly higher than that of normal, however, this was improved on 14 days after application of ozonated water. In pathohistological findings, recovery was rapid macroscopically and microscopically in the treatment with ozonated water on the hoof lesions and ozonated water was effective. In antimicobial action, bactericidal effect was observed in treatment with ozonated water on the hoof lesions and ozonated water was effective.

젖소 足皮膚炎에 대한 오존연고의 治療 效果

이수진,전무형,조성환,김덕환,박창식,김명철 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10

Thirty dairy cows with pododermatitis were selected and treatment effect of ozone ointment for bovine pododermatitis was investigated. In addition, bactericidal effect of ozone ointment on etiological agent of bovine pododermatitis was evaluated. The pathohistological examination for the pododermatitis, according to application with ozone ointment was investigated. Thirty dairy cows were divided two groups: control group(vaseline group: 15 cows), treatment group(ozone ointment group: 15 cows). Various parameters were evaluated in terms of the lameness score, swelling score, lesion score, WBC, neutrophil, pathohistological finding, and antimicrobial action. As compared with vaseline group, ozone ointment group revealed significant decrease of lameness (p<O.05), swelling (p<O.O1) and lesion score (p<O.05) were shown in hoof lesions on 14 days after application. In hematological findings, WBC count revealed slightly high values within normal range before treatment, however, this was I Corresponding author improved on 14 days after application of ozone ointment. The number of neutrophils was slightly higher than that of normal, however. this was improved on 14 days after application of ozone ointment. In pathohistological findings, normal dermal tissue was found in tissues with pododermatitis on 14 days after application of ozone ointment. In antimicobial action, marked decrease rate of bacteria was observed in feet of all cases treated with ozone ointment. The decreasing rate of bacteria in anaerobic culture was higher than that in aerobic culture.

경제인류학의 이론적 체계들에 대한 비판적 평가

李德成 慶北大學校 人文大學 1985 인문학총 Vol.10 No.-

Economic anthropolgy is today characterized not only by its diverse subject matter, the analysis of organization and performance of the vast number of economies of different times and places, but also by a growing professional interest reaching far beyond the community of anthropologists. However, there is as yet no single generally agreed-upon theoretical framework in economic anthropology. Three theoretical systems or paradigms compete with each other in this field: formalism, substantivism, and marxism. The main purpose of this paper is to consider some problems which arise out of three theoretical systems in economic anthropology and to demonstrate that further intensive work for presenting the possibility of synthesizing three theoretical systems is of significance in the further development of the main body of anthropological thought.

(Cu_(1-x) Ag_x)_2 Cd I_4 Thermistor의 製造 및 그 電氣的 特性

李德東,洪性樂 경북대학교 공과대학 1976 工大硏究誌 Vol.5 No.-

(Cu_1-xAg_x)_2 CdI_4 (0≤x≤1) thermistors were fabricated by sintering the mixture of CuI, AgI and CdI_2 at 250℃ for one hour. The electrical properties of (Cu_1-xAg_x)_2 CdI_4 complexes were also investigated. The x-dependent critical temperature for the thermistors was in the range of (30―65)℃. The sample for x=0.5 showed the highest resistance anomaly index, 3.5.