하프 변환을 이용한 타원 검출 알고리즘의 구현

이주용,정채영,이웅기 조선대학교 기초과학연구소 1996 自然科學硏究 Vol.19 No.1

The Hough transform is a robust technique which is useful in detecting strait lines in an edge-enhanced picture. However, the conventional Hough transform to recover ellipses has been limited by slow speed and excessive memory size. This paper presents algorithm techniques aimed at improving the efficiency and reducing the memory size of the accumulator array. In this paper, five geometries of symmetric points of an ellipse are used to improve the efficiency of using a conventional HT for the detection of an ellipse. This technique greatly reduces the memory space of the accumulator needed for the detection of ellipses using the HT.

대학 건축공학과의 실습학기제에 관한 연구

이승준,한인웅,정구용,조방현,한기원,박재호,김진원 三陟大學校 2000 論文集 Vol.33 No.2

In order to solidify the architectural education in university, we should enlarge the opportunity of field training and develop the field training course system as a part of industry-scholastic cooperation. And we should develop new educational process to bring up potent engineers adaptable to the training affairs, faithful to the educational object of the industrial university.

有機農産物의 價格競爭力 提高方案

李基雄 順天大學校 1995 論文集 人文社會科學篇 Vol.14 No.-

전남쌀의 가격차별화 현황과 발전방향

이기웅,허상만,박준근,구자옥 全南大學校 農業科學技術硏究所 1996 農業科學技術硏究 Vol.31 No.-

Competitiveness of rice comes from higher quality and lower price. The latter accrues from cost reduction which is in turn possible through the economies of scale. Economies of scale is, however, very difficult to achieve because of small-scaleness of rice acreage in Chonnam Province and expensive land price. Therefore, rice competitiveness should be complemented by utilizing quality differentiation both vertically and horizontally. Chonnam rice is somehow treated as a lemon good among the metropolitan consumers like in Seoul. It is a problem to be coped with. According to our research results, Chonnam rice carried the lowest price in the rice markets of the big cities. In Taegu city, Chonnam branded rice was not sold at the department stores, and it was sold only at one place in Pusan. In other words, Chonnam rice is treated as a lemon good and shunned by some localities across the nation. In order to remedy this unfavorable situation, Chonnam rice should be differentiated both vertically and horizontally in terms of variety selection, storage, milling and processing, packaging, etc. Especially, development of new brands and quality guarantee is ncccss. Besides, both publicizing and improving rice quality should be emphasized to promote Chonnam rice at the national level.

흰쥐에 있어서 Styrene에 의한 간장의 Microsomal Cytochrome P450의 유도

이준연,박상신,정효석,문영한,김기웅,장성근 大韓産業醫學會 1997 대한직업환경의학회지 Vol.9 No.4

The effects of styrene on the induction of cytochrome P-450s (P450), (P4501A1/2, P4502B1/2 and P4502E1) and activities of other related enzymes were investigated in the male Sprague Dawley rats which were treated with styrene 500(S1), 1.000(S2), 1,500(S3) mg/kg in olive oil intraperitoneally once a day for two days and sacrificed for the preparation of liver microsomes after 24 hrs. 1. The contents of total protein and P450 in the microsomes derived from the styrene treated groups were slightly higher than those from the control group except those from the S3 group (1,500 mg styrene/kg body weight). The decreases in microsomal protein contents was prominent in the S3 (p<0.05), but the P450 contents was increased significantly in the S2(P<0.05). 2. The activities of NADPH-450 and NADH b5 reductase in hepatic microsomes derived from the treated groups were significantly increased in the treated groups (p<0.05). 3. The activities of PROD were also prominently increased with the treatment of styrene except in S3 group, but the activity of EROD was decreased by styrene treatment. The activities of pNPH in the styrene treated groups were higher than that of the control group(p<0.05). 4. Western blotting with monoclonal antibodies against P4502B1/2 isozymes showed the presence of P4502B1/2 in hepatic microsomes from the rats treated with styrene, and the increase in the densities of immunoblots were corelated with the dosages of styrene. The blot densities against P4501A1/2 and P4502E1 were slightly increased in the styrene treated groups compared with the control group. These results suggested that styrene could primarily induce P4502B1/2 as major and P4501A1/2 and P4502E1 in minor forms for the metabolism of styrene in rats.

韓 ·美 農産物貿易의 構造와 政策에 관한 比較硏究

李基雄 順天大學校 1991 論文集 人文社會科學篇 Vol.10 No.-

The Uruguay Round of GATT talks which forces us to speed up the free trade of agricultural products is one of the hottest issues in the agricultural communities in Korea. We have imported 3 to 4 billion dollars worth foreign agricultural products yearly, which consists about 40 -50% of our total food and feed consumption. Our farmers simply cannot compete with fully commercialized farmers in the developed countries. This paper aims (1) to review the structural characteristic of Korean agriculture and U.S.A. one, (2) to analyze the trend of two nations in agricultural trade policy and (3) to consider options for optional positioning of Korean agricultural trade policy in the future. The characteristics of Korean agriculture can summarized as widespread small scale farming, greater proportion of old-aged labor and an increase in borrowed farm land at very high rent rates. On the other hand, the ones of U.S.A. are the capital-technology intensives and specialization. America has made every effort to expand bilateral trade negotiations. Specially she equally applied across the three areas of support(internal supports, tariffs and export subsidies) and protection measures(the sanitary and phytosanitary regulations). Strategies for exporting domestic agricultural products are urgently needed in the present Korean agricultural situation. Among many agricultural products such as vegetables, fruits, ginseng and processed food are considered the most competable agricultural products in the agricultural market of U.S.A.. To export such these products to America a strong government export driving policy is necessary. It includes allocating more government budget to modernizing agricultural infrastructure and technology development and eliminating domestic agricultural protection measures exercised by U.S.A..

딜티아젬 함유 코아 펠렛으로부터 약물의 용출에 미치는 폴록사머 함량의 영향

이승우,감성훈,홍지웅,최기송,박은석,지상철 한국약제학회 2002 Journal of Pharmaceutical Investigation Vol.32 No.4

In order to evaluate the effect of poloxamer 407 content on the dissolution profiles of pellets, diltiazem HCl (DTL) core pellets were prepared with poloxamer 407 (50∼90% w/w, with lactose as filler) using an extruder and a spheronizer. Any possible interaction between the drug and excipients was evaluated using DSC, IR and TLC. Dissolution tests were performed using USP basket method. In addition, scanning electron micrograph was performed to examine the surface roughness and cross sections. The release of DTL from the core pellets was decreased with increasing poloxamer 407 content. Cracks appeared on the surface of the core pellets with increasing the poloxamer 407 content, which may play a role on the retardation of the release of DTL from core pellets. There was no any significant interaction between the drug and excipients employed to prepare the core pellets.

Cd²+ 投與에 의한 腎臟 Naf, Kf-ATPase의 抑制

李神雄,李正秀,裵基哲 嶺南大學校 環境問題硏究所 1989 環境硏究 Vol.9 No.1

Weekly intraperitoneal injections of 2mg per kilogram of cadmium acetate for 2 weeks induced persistent hypertension in rats. Body and kidney weights of cadmium hypertensive rats did not differ from those of control normotensive rats. Cadmium concentration in control and ??-treated rat kidney was 1.35㎍/g wet Wt, and 52.6㎍/g wet Wt, respectively. ??,??-ATPase activity of microsomal fractions or tissue homogenate of ?? treated rat kidney was significantly lower than of control. ?? and ouabain inhibited ??, ??-ATPase of control microsome in vitro with ?? value of about ?? and ?? , respectively. These results suggest that cadmium accumulated in kidney inhibits renal ??, ??-ATPase.

柔道選手의 體力變化 推移에 關한 硏究 : 國家代表級 選手를 中心으로

李根一,李雄基 建國大學校 敎育硏究所 1991 論文集 Vol.15 No.-

The purpose of this study was to analyze transformation of physical fitness in Korean Male Judo National-Class Representatives for 5 years, 1986∼1990, and to contribute consequent data for predicting the changeful state of physical fitness in the meantime with national-class representatives, and to provide the critical data for chooing new figures in rank-holding judo experts and furthermore for scientific training programs. The results of this article with pointing out the structure and the function of physical fitness were summarized as follows: 1.Structure There were not significant differences among the items, but it was found that only Chest Girth is different in weight class of -64, -71, -86, and -95㎏. 2.Function There were something to differ from: Shuttle Run in -65㎏, Trunk Flextion and Rolling in -78㎏, Stand Long Jump and Rolling in -86㎏ respectively, but the other items have no distingushed difference.

수은(Hg2+) 및 니켈(Ni2+)이 [³H]Quinuclidinyl Benzilate의 Muscarinic Receptors 결합에 미치는 영향

이정수,임시덕,배기철,이신웅 嶺南大學校 環境問題硏究所 1991 環境硏究 Vol.11 No.1

[³H]Quinuclidinyl benzilate(QNB) binds specifically to muscarinic receptors which mediate a number of important physiological reponses of acetylcholine. In the present study, the effects of ?? and ?? on [³H]QNB binding to the cerebral microsome were investigated. Microsomes were treated with ?? or ?? for 15min at 37℃ and then binding experiments were carried out. ?? and ?? inhibited [³H]QNB binding in the presence of 100pM [³H]QNB to muscarinic receptors with ?? value of 2.1 μM and 350mM, respectively. The inhibition of [³H]QNB binding by these metals was irreversible. Both ?? and ?? decreased the binding site concentration for [³H]QNB binding without affecting ?? value of [³H]QNB. These results indicate that heavy metals inactivate the muscarinic receptors with different potency.